Blood Lancet

Analytical device with lancet and test element

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Abstract
The invention concerns an analytical device containing a lancet comprising a lancet needle and a lancet body, the lancet needle being movable relative to the lancet body and the lancet body being composed, at least in the area of the tip of the lancet needle, of an elastic material in which the tip of the lancet needle is embedded, and an analytical test element which is permanently connected to the lancet body. In addition the invention concerns an analytical device containing a lancet comprising a lancet needle and a lancet body which is in the form of a hollow body in the area of the tip of the lancet needle and surrounds the tip of the lancet needle, the lancet needle being movable relative to the lancet body and the hollow body being composed at least partially of an elastic material, and an analytical test element which is permanently connected to the lancet body. Finally the invention concerns a process for manufacturing such an analytical device.

Claims
1. Analytical device containing i) a lancet comprising a lancet needle with a tip and a lancet body which completely surrounds the lancet needle at least in the area of the tip, the lancet needle being movable relative to the lancet body and the lancet body being composed, at least in the area of the tip of the lancet needle, of an elastic material in which the tip of the lancet needle is embedded and ii) an analytical test element, the analytical test element being permanently connected to the lancet body.

2. Analytical device containing i) a lancet comprising a lancet needle with a tip and a lancet body which is in the form of a hollow body in the area of the tip of the lancet needle and which surrounds the tip of the lancet needle, the lancet needle being movable relative to the lancet body and the hollow body being composed at least partially of an elastic material that can be pierced by the tip of the lancet needle during the lancing process and which optionally reseals after the tip of the lancet needle has been retracted into the hollow body and ii) an analytical test element, the analytical test element being permanently connected to the lancet body.

3. Analytical device as claimed in claim 1, characterized in that the elastic material is a thermoplastic elastomer.

4. Analytical device as claimed in claim 1, characterized in that the lancet body has means for sample liquid transport.

5. Analytical device as claimed in claim 1, characterized in that the test element has means for sample liquid transport.

6. Analytical device as claimed in claim 4, characterized in that the means for sample liquid transport is a capillary gap, a capillary channel or a wick or a bar made of an absorbent material.

7. Analytical device as claimed in claim 4, characterized in that the means for sample liquid transport has a sample application site which is directly adjacent to an outlet opening of the tip of the lancet needle.

8. Process for manufacturing an analytical device as claimed in claim 1, wherein a lancet is prepared the lancet needle is sterilized and subsequently the analytical test element is firmly connected to the lancet body.

9. Use of an elastic material as a component of an analytical device containing a lancet and an analytical test element to maintain the sterility of at least the tip of a lancet needle in the unused state.

10. A lancet module, comprising a module body portion comprising a lancet channel with a plurality of lancet bearing guides disposed within the lancet channel; and a lancet comprising a sharpened distal tip and shaft portion which is slidably disposed within the lancet channel and lancet bearing guides with the lancet bearing guides configured to confine a lancet to substantially linear axial movement.

11. The lancet module of claim 10 wherein the module body portion comprises three 3 lancet bearing guides separated spatially along the lancet channel with a lancet bearing guide disposed at either end of the lancet channel.

12. The lancet module of claim 10 wherein a longitudinal axis of the lancet channel is substantially parallel to a longitudinal axis of the module body portion.

13. The lancet module of claim 10 wherein the lancet channel further comprises at least one flow stop chamber disposed within a distal end portion of the lancet channel that has a transverse dimension that is significantly larger than a transverse dimension of a distally adjacent portion of the lancet channel and a rapid transition in transverse dimension that will interrupt capillary action from a distal end of the lancet channel.

14. The lancet module of claim 10 wherein the module body portion is configured to be mechanically registered and secured adjacent a lancet driver.

15. A lancet module, comprising a module body portion comprising a lancet channel having at least one flow stop chamber disposed within a distal end portion of the lancet channel that has a transverse dimension that is significantly larger than a transverse dimension of a distally adjacent portion of the lancet channel and a rapid transition in transverse dimension that will interrupt capillary action from a distal end of the lancet channel; and a lancet comprising a sharpened distal tip and shaft portion which is slidably disposed within the lancet channel.

16. The lancet module of claim 15 wherein the lancet channel further comprises at least one lancet bearing guide with the lancet bearing guides configured to confine the lancet to substantially linear axial movement.

17. The lancet module of claim 15 wherein the module body portion comprises three 3 lancet bearing guides separated spatially along the lancet channel with a lancet bearing guide disposed at either end of the lancet channel.

18. The lancet module of claim 15 wherein a longitudinal axis of the lancet channel is substantially parallel to a longitudinal axis of the module body portion.

19. The lancet module of claim 15 wherein the module body portion is configured to be mechanically registered and secured adjacent a lancet driver.

20. A sampling module, comprising a module body portion comprising a lancet channel with a plurality of lancet bearing guides disposed within the lancet channel; a lancet comprising a sharpened distal tip and shaft portion which is slidably disposed within the lancet channel and lancet bearing guides with the lancet bearing guides configured to confine a lancet to substantially linear axial movement; and a sample reservoir in fluid communication with a sample input port of the module body portion.

21. The sampling module of claim 20 wherein the module body portion comprises three 3 lancet bearing guides separated spatially along the lancet channel with a lancet bearing guide disposed at either end of the lancet channel.

22. The sampling module of claim 20 wherein a longitudinal axis of the lancet channel is substantially parallel to a longitudinal axis of the module body portion.

23. The sampling module of claim 20 wherein the lancet channel further comprises at least one flow stop chamber disposed within a distal end portion of the lancet channel that has a transverse dimension that is significantly larger than a transverse dimension of a distally adjacent portion of the lancet channel and a rapid transition in transverse dimension that will interrupt capillary action from a distal end of the lancet channel.

24. The sampling module of claim 20 wherein the module body portion is configured to be mechanically registered and secured adjacent a lancet driver.

25. A sampling module, comprising: a module body portion comprising a lancet channel having at least one flow stop chamber disposed within a distal end portion of the lancet channel that has a transverse dimension that is significantly larger than a transverse dimension of a distally adjacent portion of the lancet channel and a rapid transition in transverse dimension that will interrupt capillary action from a distal end of the lancet channel; a lancet comprising a sharpened distal tip and shaft portion which is slidably disposed within the lancet channel; and a sample reservoir in fluid communication with a sample input port of the module body portion.

26. The sampling module of claim 25 wherein the lancet channel further comprises at least one lancet bearing guide with the lancet bearing guides configured to confine the lancet to substantially linear axial movement.

27. The sampling module of claim 25 wherein the module body portion comprises three 3 lancet bearing guides separated spatially along the lancet channel with a lancet bearing guide disposed at either end of the lancet channel.

28. The sampling module of claim 25 wherein a longitudinal axis of the lancet channel is substantially parallel to a longitudinal axis of the module body portion.

29. The sampling module of claim 25 wherein the module body portion is configured to be mechanically registered and secured adjacent a lancet driver.

30. A sampling module, comprising: a module body portion comprising a lancet channel; a lancet comprising a sharpened distal tip and shaft portion which is slidably disposed within the lancet channel of the module body portion; a sample reservoir having an input end and a terminal end, the sample reservoir being in fluid communication with a sample input port of the module body portion; and a vent disposed between and in fluid communication with the terminal end of the sample reservoir and the lancet channel.

31. The sampling module of claim 30 wherein a longitudinal axis of the lancet channel is substantially parallel to a longitudinal axis of the module body portion.

32. The sampling module of claim 30 wherein the module body portion is configured to be mechanically registered and secured adjacent a lancet driver.

33. The sampling module of claim 30 wherein the terminal end further comprises a fill detector.

34. The sampling module of claim 33 wherein the fill detector is electrical.

35. The sampling module of claim 33 wherein the fill detector is optical.

36. The sampling module of claim 33 wherein the fill detector is visual.

37. A sampling module comprising: a module body portion having a sampling site adjacent a lancet exit port where the sharpened distal tip of the lancet exits a distal end of the module body portion that includes a sample cavity in a distal end surface of the module body portion; a lancet comprising a sharpened distal tip and shaft portion which is slidably disposed within the module body portion and extendable from the lancet exit port; and a sample reservoir in fluid communication with a sample cavity of the module body portion.

38. The sampling module of claim 37 wherein a transverse dimension of the sampling cavity is about 2 to about 5 times a transverse dimension of the lancet shaft portion and wherein a sample flow channel is disposed between and in fluid communication with the sample reservoir and the sample cavity.

39. The sampling module of claim 37 wherein the module body portion is configured to be mechanically registered and secured adjacent a lancet driver.

40. A sampling module, comprising: a module body portion configured to be mechanically registered and secured adjacent a lancet driver; a lancet comprising a sharpened distal tip and shaft portion which is slidably disposed within the module body portion; and a sample reservoir in fluid communication with a sample input port of the module body portion that has a fill detector for determining when the sample reservoir is full of a sample.

41. The sampling module of claim 40 wherein the fill detector is electrical.

42. The sampling module of claim 40 wherein the fill detector is optical.

43. The sampling module of claim 40 wherein the fill detector is visual.

44. A sampling module, comprising: a module body portion comprising a lancet channel; a lancet comprising a sharpened distal tip and shaft portion which is slidably disposed within the lancet channel of the module body portion; a first sample reservoir having an input end and a terminal end, the input end of the sample reservoir being in fluid communication with a sample input port of the module body portion; and a second sample reservoir having an input end in fluid communication with the terminal end of the first sample reservoir and having a cross sectional area that is substantially smaller than a cross sectional area of the first sample reservoir such that a sample flowing from the sample input port into the first sample reservoir will fill the first sample reservoir and then rapidly fill the second sample reservoir by capillary action.

45. The sampling module of claim 44 wherein a terminal end of the second sample reservoir further comprises a fill detector.

46. The sampling module of claim 45 wherein the fill detector is electrical.

47. The sampling module of claim 45 wherein the fill detector is optical.

48. The sampling module of claim 45 wherein the fill detector is visual.

49. A lancet module comprising a module body portion configured to be mechanically registered and secured adjacent a lancet driver; and a lancet comprising a sharpened distal tip and shaft portion which is slidably disposed within the module body portion.

50. The lancet module of claim 49 wherein the sharpened distal tip of the lancet is covered by the module body portion when the lancet is in a retracted position and the sharpened distal tip extending beyond a distal end of the lancet module when the lancet is in an extended position.

51. The lancet module of claim 49 wherein the module body portion is comprised of a polymer.

52. The lancet module of claim 49 wherein the module body portion is comprised of PMMA.

53. The lancet module of claim 49 wherein the module body portion is substantially rectangular in shape and comprises a recess configured to be engaged by a ratchet drive mechanism

54. The lancet module of claim 49 wherein the module body portion further comprises a lancet drive head slot disposed between a first protective strut and a second protective strut of the module body portion.

55. The lancet module of claim 54 wherein the first and second protective struts comprise elongated protective struts extending substantially parallel to the lancet.

56. A lancet module comprising a module body portion having a lancet channel and a lancet slidably disposed within the lancet channel and a cover sheet disposed over the lancet and lancet channel capturing the lancet shaft in the lancet channel.

57. The lancet module of claim 56 wherein a sharpened distal tip of the lancet is covered by the module body portion when the lancet is in a retracted position and the sharpened distal tip extending beyond a distal end of the lancet module when the lancet is in an extended position.

58. The lancet module of claim 56 wherein the module body portion is comprised of a polymer.

59. The lancet module of claim 56 wherein the module body portion is comprised of PMMA.

60. The lancet module of claim 56 wherein the module body portion is substantially rectangular in shape and comprises a recess configured to be engaged by a ratchet drive mechanism.

61. A sampling module comprising: a module body portion configured to be mechanically registered and secured adjacent a lancet driver; a lancet comprising a sharpened distal tip and shaft portion which is slidably disposed within the module body portion; and a sample reservoir in fluid communication with a sampling site of the module body portion.

62. The sampling module of claim 61 wherein the sharpened distal tip of the lancet exits a distal end of the module body portion at a lancet exit port and the sample reservoir is in fluid communication with the lancet exit port.

63. The sampling module of claim 61 wherein the sample reservoir comprises a analytical region having sample sensors disposed within the analytical region.

64. The sampling module of claim 63 further comprising sensor contacts in electrical communication with the sample sensors disposed within the analytical region.

65. The sampling module of claim 61 wherein the sharpened distal tip of the lancet is covered by the module body portion when the lancet is in a retracted position and the sharpened distal tip extending beyond a distal end of the lancet module when the lancet is in an extended position.

66. The sampling module of claim 61 wherein the module body portion is comprised of a polymer.

67. The sampling module of claim 61 wherein the module body portion is comprised of PMMA.

68. The sampling module of claim 61 wherein the module body portion is substantially rectangular in shape and comprises a recess configured to be engaged by a ratchet drive mechanism.

69. A sampling module comprising: a module body portion; a lancet comprising a sharpened distal tip and shaft portion which is slidably disposed within a lancet channel of the module body portion; and a sample reservoir which has an analytical region with sample sensors disposed within the analytical region the sample reservoir being in fluid communication with a sampling site of the module body portion.

70. A sampling module comprising a module body portion having a lancet channel, a lancet slidably disposed within the lancet channel, a cover sheet disposed over the lancet and lancet channel capturing the lancet shaft in the lancet channel, and a sample reservoir for collection of a sample obtained by lancing a patient with the lancet.

71. The sampling module of claim 70 wherein the sharpened distal tip of the lancet exits a distal end of the module body portion at a lancet exit port and the sample reservoir is in fluid communication with the lancet exit port.

72. The sampling module of claim 71 further comprising a sample input cavity in a distal end surface of the module body portion that a transverse dimension that is about 2 to about 5 times a transverse dimension of the lancet shaft portion and wherein a sample flow channel is disposed between and in fluid communication with the sample reservoir and the cavity.

73. The sampling module of claim 70 wherein the sample reservoir comprises a analytical region having sample sensors disposed within the analytical region.

74. The sampling module of claim 73 further comprising sensor contacts in electrical communication with the sample sensors disposed within the analytical region.

75. The sampling module of claim 70 wherein a sharpened distal tip of the lancet is covered by the module body portion when the lancet is in a retracted position and the sharpened distal tip extending beyond a distal end of the lancet module when the lancet is in an extended position.

76. The sampling module of claim 70 wherein the module body portion is comprised of a polymer.

77. The sampling module of claim 70 wherein the module body portion is comprised of PMMA.

78. The sampling module of claim 70 wherein the module body portion is substantially rectangular in shape and comprises a recess configured to be engaged by a ratchet drive mechanism.

79. The sampling module of claim 70 wherein the sample reservoir further comprises thermal sensors for detecting the presence of a sample.

80. A sampling device comprising: a lancet for obtaining a blood sample from a user, said lancet having a distal end and a proximal end; a reservoir for collecting the blood sample adjacent to the distal end of said lancet; a lancet driver attached to the proximal end of said lancet; and a sensor on said sampling device for detecting said user and initiating a lancing cycle.

81. A sampling device according to claim 80 wherein said reservoir further comprises an analytical region having sample sensors for analyzing the blood sample.

82. A sampling device according to claim 81 wherein said lancet and said reservoir are integrated into a disposable cartridge.

83. A sampling device according to claim 80 wherein a user sensor detects said user activates the lancet driver.

84. A sampling device according to claim 83 wherein the user sensor is prompted when said disposable cartridge is loaded into said device.

85. A sampling device according to claim 80 wherein the user sensor comprises an electric circuit, which is closed when pressured, is applied by said user on said sensor.

86. A method of sampling comprising: providing a sampling module having a lancet disposed within a lancet channel, a sample reservoir and an orifice on a surface of the sampling module in fluid communication with the sample reservoir; coupling the lancet of the sampling module to a lancet driver; activating a lancing cycle by having a patient place target tissue over a sensor which detects the target tissue and initiates the lancing cycle; lancing the target tissue to obtain a sample of blood; collecting said sample of blood through the orifice.

87. The method of claim 86 further comprising informing the patient to remove the target tissue from the ergonomically contoured active sampling area.

88. A method of sampling comprising: loading a disposable sampling module into a lancing device with a lancet disposal within a lancet channel which has an orifice on a surface of said sampling module; initiating a lancing cycle by prompting a user sensor on said lancing device; activating said lancing cycle by having a patient place a finger over an ergonomically contoured area located on said surface such that said finger overlaps with said orifice; lancing the finger to obtain a sample of blood; collecting said sample of blood through said orifice; and informing said user to remove said finger from the ergonomically contoured active sampling area.

89. The method of claim 88 further comprising transferring the sampling module for analysis after the sample of blood has been obtained.

90. A method of sampling comprising: loading a disposable sampling module having a lancet into a lancing device; initiating a lancing cycle and activating a user sensor on said lancing device by placing a piece of skin on a surface of said sampling module; lancing said skin to obtain a blood sample; and collecting said blood sample.

91. The method of claim 90 further comprising transferring the sample module for analysis after the blood sample has been obtained.

92. A method of sampling comprising: loading a disposable sampling module having a lancet into a lancing device; initiating a lancing cycle and activating a user sensor on said lancing device by placing a piece of skin on a surface of said sampling module; lancing said skin to obtain a blood sample; collecting said blood sample; and.

93. The method of claim 92 further comprising transferring the sampling module for analysis after the blood sample has been obtained.

94. A method of sampling according to claim 92 further comprising analyzing said blood sample.

95. A tissue penetration sampling device for collecting blood from the skin of a patient, the device comprising: a sampling module having a sampling site, the sampling site having a sample input port, a sample reservoir in fluid communication with the sample input port, a lancet maintained within the sampling module, the lancet having a lancet tip adjacent the sample input port, and a lancet driver coupled to the lancet to drive the lancet tip through the opening to lance the skin when the lancet driver is actuated, the device being configured to allow actuation of the lancet driver, lancing of the skin, collection of the blood, and movement of the blood to the sample reservoir seamlessly by forming a substantially airtight seal at the opening when the skin is firmly pressed against the sampling site.

96. The device of claim 95 further comprising a pierceable membrane disposed over the sample input port and the lancet tip and configured to allow the tip of the lancet to pass through the pierceable membrane during a lancing cycle.

97. A sampling module for use in collecting blood from the skin of a patient, comprising a body portion, a sampling site on the body portion defining a sample input port, the sampling site shaped to conform to the skin and to form a substantially airtight seal with the skin, a lancet disposed in the body portion, the lancet having a lancet tip adjacent the sample input port, wherein the lancet is operable to send the lancet tip through the opening to lance the skin of the patient, and a reservoir in fluid communication with the sample input port, the sampling acquisition module configured to allow seamless sampling of the blood, and integrated lancing of the skin, collection of the blood through the sample input port, and movement of the blood to the sample reservoir.

98. A method of collecting blood from the skin of a patient, the method comprising: a) contacting the skin of the patient with a blood sampling device, and b) performing a single initiating act resulting in the blood sampling device lancing the skin, collecting blood from the skin, and moving blood to a reservoir within the sampling device.

99. The method of claim 98, wherein the single initiating act also results in analysis of the blood.

100. The method of claim 99, wherein the single initiating act also results in display of information obtained from the analysis of the blood.

101. The method of claim 98, wherein the blood is collected and stored seamlessly.

102. A sampling module belt comprising a plurality of sampling modules having a module body portion with a lancet channel and a lancet slidably disposed within the lancet channel and a cover sheet disposed over the lancet and lancet channel capturing the lancet shaft in the lancet channel with the plurality of sampling modules interconnected in a linear array by a flexible belt member.

103. The sampling module belt of claim 102 wherein the flexible belt member comprises the cover sheet that extends across at least a portion of the front surface of the module body portions.

104. The sampling module belt of claim 102 wherein the belt member comprises a single sheet of cover sheet material.

105. A lancet belt cartridge comprising: (a) a lancet belt comprising a plurality of lancets releasably secured to a flexible belt tape substantially orthogonal to a longitudinal axis of the belt tape; and (b) a supply canister disposed about an unused portion of the lancet belt.

106. The lancet belt cartridge of claim 105 further comprising a receptacle canister configured to accept and store used lancets.

107. A lancet module cartridge, comprising a plurality of lancet modules interconnected in an array and configured for sequential use.

108. A lancet module cartridge comprising: (a) a lancet module belt comprising a plurality of lancet modules interconnected in an array by a flexible member; and (b) a supply canister that is disposed about an unused portion of the lancet module belt.

109. The lancet module cartridge of claim 108 further comprising a receptacle canister that is configured to store a used portion of the lancet module belt.

110. A lancet module cartridge comprising: (a) a lancet module belt comprising a plurality of lancet modules having a module body portion with a lancet channel and a lancet slidably disposed within the lancet channel and a cover sheet disposed over the lancet and lancet channel capturing the lancet shaft in the lancet channel with the plurality of lancet modules interconnected in a linear array by a flexible belt member. (b) a supply canister that is disposed about an unused portion of the lancet module belt; and (c) a receptacle canister that is configured to store a used portion of the lancet module belt.

111. A sampling module cartridge comprising a plurality of sampling modules interconnected in an array and configured for sequential use.

112. The sampling module cartridge of claim 111 wherein at least one of the sampling modules comprises a sample reservoir having an analytical site with sample sensors for sample testing.

113. A sampling module cartridge comprising: (a) a plurality of sampling modules interconnected in an array by a flexible member; and (b) a supply canister that is disposed about an unused portion of the sampling module belt.

114. The sampling module cartridge of claim 113 further comprising a receptacle canister that is configured to store a used portion of the sampling module belt.

115. The sampling module cartridge of claim 113 wherein at least one of the sampling modules comprises a sample reservoir having an analytical site with sample sensors for sample testing.

116. A sampling module cartridge comprising: (a) a sampling module belt comprising a plurality of sampling modules having a module body portion with a lancet channel, a lancet slidably disposed within the lancet channel, a cover sheet disposed over the lancet and lancet channel capturing the lancet shaft in the lancet channel, and a sample reservoir for collection of a sample obtained by lancing a patient with the lancet with the plurality of sampling modules interconnected in a linear array by a flexible belt member; (b) a supply canister that is disposed about an unused portion of the sampling module belt; and (c) a receptacle canister that is configured to store a used portion of the sampling module belt.

117. An apparatus for collecting blood from a patient's skin, the apparatus comprising a cartridge including a plurality of sampling modules, each sampling module comprising a sampling input port, a lancet having a tip, the tip adjacent the sampling input port, the lancet maintained within the cartridge and operable to extend the lancet tip through the sampling input port to pierce the patient's skin positioned adjacent the sampling input port, and an analytical region in fluid communication with the sampling input port, the analytical region associated with sample sensors.

118. The apparatus of claim 117, wherein the cartridge includes at least 10 sampling modules.

119. The apparatus of claim 117, wherein each sampling module is configured to allow integrated lancing, collection, and testing.

120. A method of collecting and testing a series of blood samples, the method comprising: a) providing a sampling module cartridge and a reader device, the sampling module cartridge including a plurality of sampling modules, each sampling module adapted to perform a single blood sampling cycle of lancing, collection of a blood sample, and testing of the blood sample; b) coupling the sampling module cartridge to the reader device; c) initiating the blood sampling cycle and obtaining a first blood sample; d) testing the first blood sample obtained; e) advancing the sampling cartridge to bring another sampling module online; f) initiating another blood sampling cycle and obtaining a second blood sample; and g) testing the second blood sample.

121. The method of claim 120 further comprising repeating steps e) through g) until substantially all sampling modules on the sampling module cartridge have been used.

122. The method of claim 121 further comprising uncoupling the sampling module cartridge and reader device after substantially all sampling modules on the sampling module cartridge have been used.

123. The method of claim 122, wherein steps e) through g) may be repeated at least 10 times before uncoupling the sampling module cartridge and reader device.

124. The method of claim 120, wherein each sampling module is configured to allow integrated lancing, collection, and testing.

125. The method of claim 120, wherein each sampling module is configured to allow a measurement to be obtained by the reader device.

126. A tissue penetration sampling device comprising a controllable lancet driver operatively coupled to a cartridge of sampling modules.

127. A sampling module cartridge comprising a plurality of sampling modules disposed within a cartridge housing and configured for serial use by a lancet driver.

128. The sampling module cartridge of claim 127 wherein at least one of the sampling modules comprises a sample reservoir having an analytical site with sample sensors for sample testing.

129. The sampling module cartridge of claim 127 wherein the plurality of sampling modules comprise a sampling module belt comprising a plurality of sampling modules having a module body portion with a lancet channel and a lancet slidably disposed within the lancet channel and a cover sheet disposed over the lancet and lancet channel capturing the lancet shaft in the lancet channel with the plurality of sampling modules interconnected in a linear array by a belt member.

130. A cartridge for use in sampling, comprising a sampling cartridge body having a plurality of sampling module portions, a lancet cartridge body having a plurality of lancet module portions with the sampling cartridge body and lancet cartridge body being disposed adjacent each other in an operative configuration such that each lancet module portion can be readily aligned in a functional arrangement with each sampling module portion.

131. The cartridge of claim 130 wherein each sampling module portion comprises a sample reservoir, a lancet channel and an input port wherein the lancet channel is disposed between and in fluid communication with the input port and the sample reservoir and may serve as a sample flow channel.

132. The cartridge of claim 130 wherein each lancet module portion comprises a lancet channel with a lancet slidably disposed in the lancet channel.

133. The cartridge of claim 130 wherein each sampling module portion comprises a separate sampling module connected to adjacent sampling module portions by a flexible belt.

134. The cartridge of claim 130 wherein the lancet module portions comprise separate lancet modules connected to adjacent lancet modules by a flexible belt.

135. The cartridge of claim 130 wherein the lancet cartridge body is removably connected to the sampling cartridge body.

136. The cartridge of claim 130 wherein the sampling module portions may be readily aligned in a functional arrangement with the lancet module portions with single degree of freedom motion between the sampling cartridge body and lancet cartridge body.

137. The cartridge of claim 130 further comprising a cartridge housing with the lancet cartridge body and sampling cartridge body being disposed within the cartridge housing and being separately removable from the cartridge housing.

138. The cartridge of claim 130 wherein the sampling cartridge body comprises a solid body with each sampling module portion disposed in fixed relation to the other sampling module portions in the solid body.

139. The cartridge of claim 130 wherein the lancet cartridge body comprises a solid body with each lancet module portion disposed in fixed relation to the other lancet module portions in the solid body.

140. The cartridge of claim 139 wherein the lancet cartridge body is substantially cylindrical in configuration having a longitudinal axis and each lancet module portion comprises a lancet channel that is substantially aligned in parallel with the longitudinal axis of the cartridge body.

141. The cartridge of claim 130 wherein each sampling module portion comprises a sample reservoir having sample sensors for testing a sample disposed therein.

142. The cartridge of claim 141 wherein the sample sensors are in electrical communication with sensor contacts that are configured to make contact with sensor contact brushes of an analytical reader device.

143. The cartridge of claim 130 wherein each sampling module portion comprises a sample reservoir having sample sensors for detecting the presence of a sample disposed therein.

144. The cartridge of claim 130 wherein the sampling module portions comprise sample reservoirs to accept fluid samples.

145. The cartridge of claim 144 wherein the sample reservoirs comprise an optically transmissive cover sheet disposed over the sample reservoirs.

146. The cartridge of claim 145 further comprising an optical sensor configured to transmit an optical signal through the cover sheet disposed over sample reservoirs of the sampling module portions and receive an optical signal from a sample disposed within the sample reservoirs.

147. A skin penetrating system, comprising: a housing member; a plurality of penetrating members positioned in the housing member, and a plurality of analyte detecting members each associated with a penetrating member, each analyte detecting member including a sample chamber and an opening for transport of a body fluid into the sample chamber, the analyte detecting member being configured to determine a concentration of an analyte in a body fluid using a sample of less than 1 .mu.L of a body fluid disposed in the sample chamber; and a user interface configured to relay at least one of, skin penetrating performance or a skin penetrating setting.

148. A skin penetrating system, comprising: a housing member; a plurality of penetrating members positioned in the housing member, a penetrating member driver coupled to the plurality of penetrating members; a plurality of analyte detecting members each associated with a penetrating member, each analyte detecting member including a sample chamber and an opening for transport of a body fluid into the sample chamber, the analyte detecting member being configured to determine a concentration of an analyte in a body fluid using a sample of less than 1 .mu.L of a body fluid disposed in the sample chamber; and a human interface providing at least one output.

149. A tissue penetrating system, comprising: a penetrating member driver; a cartridge with a distal port and a proximal port and coupled to the penetrating member driver; an analyte detecting member coupled to a sample chamber, the analyte detecting member being configured to determine a concentration of an analyte in a body fluid using a sample of less than 1 .mu.L of a body fluid disposed in the sample chamber; a penetrating member with a sharpened distal tip and shaft portion that is slidably disposed within the cartridge, wherein a tip of the penetrating member is configured to extend through the opening of the sample chamber; and a user interface configured to relay at least one of, skin penetrating performance or a skin penetrating setting.

150. A tissue penetrating system, comprising: a penetrating member driver; a cartridge with a distal port and a proximal port and coupled to the penetrating member driver; an analyte detecting member coupled to a sample chamber, the analyte detecting member being configured to determine a concentration of an analyte in a body fluid using a sample of less than 1 .mu.L of a body fluid disposed in the sample chamber; a penetrating member with a sharpened distal tip and shaft portion that is slidably disposed within the cartridge, wherein a tip of the penetrating member is configured to extend through the opening of the sample chamber; and a human interface providing at least one output.

151. The system of claim 150, wherein the at least one output is selected from, a penetration event of a penetrating member, number of penetrating members remaining, time of day, alarm, penetrating member trajectory waveform profile information, force for last penetration event, the last penetration event, how or low battery status, analyte status, time to change cassette status, jamming malfunction, and system status.

152. The system of claim 150, wherein the human interface is selected from an LED, an LED digital display, an LCD display, a sound generator, a buzzer, and a vibrating device.

153. The system of claim 150, wherein the housing is selected from at least one of, a telephone, a watch, a PDA, electronic device, medical device, point of care device and a decentralized diagnostic device.

154. The system of claim 150, further comprising: an input device coupled to the housing, the input device selected from one or more pushbuttons, a touch pad independent of the display device, or a touch sensitive screen on a visual display.

155. A skin penetrating system, comprising: a housing member; a penetrating member positioned in the housing member, and an analyte detecting member coupled to a sample chamber, the analyte detecting member being configured to determine a concentration of an analyte in a body fluid using a sample of less than 1 .mu.L of a body fluid disposed in the sample chamber, wherein a tip of the penetrating member is configured to extend through an opening of the sample chamber.

156. The system of claim 155, further comprising: a plurality of cartridges integrated in a cassette.

157. The system of claim 156, wherein each cartridge has an exit port, and upon launch each penetrating member exists from the exit port.

158. The system of claim 155, further comprising: a tissue stabilizer device coupled to the housing.

159. The system of claim 158, wherein the tissue stabilizer device is configured to enhance fluid flow from a target tissue.

160. The system of claim 158, wherein the tissue stabilizer device creates a stretching of a skin surface.

161. The system of claim 158, wherein the tissue stabilizer device is configured to apply a force to a target tissue and cause the target tissue to press in an inward direction relative to the housing member.

162. The system of claim 158, wherein the tissue stabilizing member applies a stimulation to a target tissue.

163. The system of claim 155, further comprising: a seal formed by a fracturable material between the penetrating member and a cartridge, the seal being positioned at least one of a distal port or a proximal port of the cartridge.

164. The system of claim 155, wherein each penetrating member is an elongated member without molded attachments.

165. The system of claim 155, further comprising, a belt for holding the penetrating members in an array configuration.

166. The system of claim 155, further comprising: a tape device configured to hold the penetrating members in an array configuration.

167. The system of claim 155, further comprising: a plurality of connectors between penetrating members for holding the penetrating members in an array configuration.

168. The system of claim 155, further comprising: a support structure for receiving the penetrating members.

169. The system of claim 168 wherein the support structure is a bandolier.

170. A skin penetrating system, comprising: a housing member; a plurality of penetrating members positioned in the housing member, and a plurality of analyte detecting members each associated with a penetrating member and a sample chamber, the analyte detecting member being configured to determine a concentration of an analyte in a body fluid using a sample of less than 1 .mu.L of a body fluid disposed in the sample chamber, wherein a tip of the penetrating member is configured to extend through an opening of a sample chamber.

171. A tissue penetrating system, comprising: a penetrating member driver; a cartridge with a distal port and a proximal port and coupled to the penetrating member driver; an analyte detecting member coupled to a sample chamber, the analyte detecting member being configured to determine a concentration of an analyte in a body fluid using a sample of less than 1 .mu.L of a body fluid disposed in the sample chamber; and a penetrating member with a sharpened distal tip and shaft portion that is slidably disposed within the cartridge, wherein a tip of the penetrating member is configured to extend through the opening of the sample chamber.

172. A tissue penetrating system, comprising: a plurality of penetrating members each having a sharpened distal tip; a penetrating member driver coupled to the plurality of penetrating members; and a plurality of cartridges each housing a penetrating member and configured so that the penetrating member driver engages each of the penetrating members sequentially, each cartridge including an analyte detecting member coupled to a sample chamber, the analyte detecting member being configured to determine a concentration of an analyte in a body fluid using a sample of less than 1 .mu.L of a body fluid disposed in the sample chamber.

173. The system of claim 172, wherein each cartridge has a plurality of seals positioned so that the sharpened distal tip remains in a sterile environment before launch of a penetrating member, the plurality of modules coupled together in an array.

174. The system of claim 172, further comprising: a penetrating member sensor coupled to the plurality of penetrating members, the penetrating member sensor configured to provide information relative to a depth of penetration of a penetrating member through a skin surface.

175. The system of claim 172, further comprising: a user interface configured to relay at least one of, skin penetrating performance or a skin penetrating setting.

176. The system of claim 172, further comprising: a human interface providing at least one output.

177. A tissue penetrating system, comprising: a plurality of cartridges, each cartridge including an analyte detecting member coupled to a sample chamber, the analyte detecting member being configured to determine a concentration of an analyte in a body fluid using a sample of less than 1 .mu.L of a body fluid disposed in the sample chamber; and each of the cartridges having a plurality of seals positioned so that the sample chamber remains in a sterile environment before launch of a penetrating member, the plurality of modules coupled together in an array.

178. A method of penetrating a target tissue, comprising: providing a tissue penetrating system with a penetrating member and an analyte detecting member coupled to a sample chamber; advancing a penetrating member through the target tissue; withdrawing the penetrating member from the target tissue; and receiving no more than 1 .mu.L of a body fluid in the sample chamber.

179. A body fluid sampling system for use on a tissue site, the system comprising: a drive force generator; a penetrating member operatively coupled to said force generator, said force generator moving said member along a path out of a housing having a penetrating member exit, into said tissue site, stopping in said tissue site, and withdrawing out of said tissue site; wherein said penetrating member is an elongate member without a molded attachment; a coupler on said force generator configured to engage at least a portion of said elongate portion of the penetrating member and drive said member along a path into a tissue site and withdrawn from a tissue site; an analyte detecting member positioned to receive fluid from a wound created by said penetrating member, said detection member configured to determine a concentration of an analyte in the fluid using a sample of less than 1 mL of the fluid; and a user interface configured to relay at least one of, penetrating member performance or a penetrating member setting.

180. A body fluid sampling system for use on a tissue site, the system comprising: a drive force generator; a penetrating member operatively coupled to said force generator, said force generator moving said member along a path out of a housing having a penetrating member exit, into said tissue site, stopping in said tissue site, and withdrawing out of said tissue site; wherein said penetrating member is an elongate member without a molded attachment; a coupler on said force generator configured to engage at least a portion of said elongate portion of the penetrating member and drive said member along a path into a tissue site and withdrawn from a tissue site; an analyte detecting member positioned to receive fluid from a wound created by said penetrating member, said detection member configured to determine a concentration of an analyte in the fluid using a sample of less than 1 mL of the fluid; and a human interface providing at least one output.

181. A body fluid sampling system for use on a tissue site, the system comprising: a drive force generator; a penetrating member having an elongate portion without a molded attachment and operatively coupled to said force generator; a sterility enclosure covering at least a tip of said penetrating member, said sterility enclosure removed from said penetrating member prior to actuation of the member and positioned so that the penetrating member will not contact said enclosure during actuation; an analyte detecting member positioned to receive fluid from a wound created by said penetrating member, said detection member configured to determine a concentration of an analyte in the fluid using a sample of less than 1 mL of the fluid; and a user interface configured to relay at least one of, penetrating member performance or a penetrating member setting.

182. A body fluid sampling system for use on a tissue site, the system comprising: a drive force generator; a penetrating member having an elongate portion without a molded attachment and operatively coupled to said force generator; a sterility enclosure covering at least a tip of said penetrating member, said sterility enclosure removed from said penetrating member prior to actuation of the member and positioned so that the penetrating member will not contact said enclosure during actuation; an analyte detecting member positioned to receive fluid from a wound created by said penetrating member, said detection member configured to determine a concentration of an analyte in the fluid using a sample of less than 1 mL of the fluid; and a human interface providing at least one output.

183. A body fluid sampling system for use on a tissue site, the system comprising: a drive force generator; a penetrating member having an elongate portion without a molded attachment and operatively coupled to said force generator; a sterility enclosure creating a sterile environment around at least a tip of said penetrating member, said penetrating member breaching said sterile enviromnent during actuation; an analyte detecting member positioned to receive fluid from a wound created by said penetrating member, said detection member configured to determine a concentration of an analyte in the fluid using a sample of less than 1 mL of the fluid; and a user interface configured to relay at least one of, penetrating member performance or a penetrating member setting.

184. A body fluid sampling system for use on a tissue site, the system comprising: a drive force generator; a penetrating member having an elongate portion without a molded attachment and operatively coupled to said force generator; a sterility enclosure creating a sterile environment around at least a tip of said penetrating member, said penetrating member breaching said sterile environment during actuation; an analyte detecting member positioned to receive fluid from a wound created by said penetrating member, said detection member configured to determine a concentration of an analyte in the fluid using a sample of less than 1 mL of the fluid; and a human interface providing at least one output.

185. A body fluid sampling system for use on a tissue site, the system comprising: a drive force generator; a penetrating member operatively coupled to said force generator, said force generator moving said member along a path out of a housing having said a penetrating member exit, into said tissue site, stopping in said tissue site, and withdrawing out of said tissue site; a skin stabilizer device suitable for stretching a surface of a tissue site, said skin stabilizer at least partially surrounding the penetrating member exit; an analyte detecting member positioned to receive fluid from a wound created by said penetrating member, said detection member configured to determine a concentration of an analyte in the fluid using a sample of less than 1 mL of the fluid; and a user interface configured to relay at least one of, penetrating member performance or a penetrating member setting.

186. A body fluid sampling system for use on a tissue site, the system comprising: a drive force generator; a penetrating member operatively coupled to said force generator, said force generator moving said member along a path out of a housing having said a penetrating member exit, into said tissue site, stopping in said tissue site, and withdrawing out of said tissue site; a skin stabilizer device suitable for stretching a surface of a tissue site, said skin stabilizer at least partially surrounding the penetrating member exit; an analyte detecting member positioned to receive fluid from a wound created by said penetrating member, said detection member configured to determine a concentration of an analyte in the fluid using a sample of less than 1 mL of the fluid; and a human interface providing at least one output.

187. A body fluid sampling system for use on a tissue site, the system comprising: a drive force generator; a penetrating member operatively coupled to said force generator, said force generator moving said member along a path out of a housing having said a penetrating member exit, into said tissue site, stopping in said tissue site, and withdrawing out of said tissue site; an analyte detecting member positioned to receive fluid from a wound created by said penetrating member, said detection member configured to determine a concentration of an analyte in the fluid using a sample of less than 1 mL of the fluid; and a user interface configured to relay at least one of, penetrating member performance or a penetrating member setting.

188. A body fluid sampling system for use on a tissue site, the system comprising: a drive force generator; a penetrating member operatively coupled to said force generator, said force generator moving said member along a path out of a housing having said a penetrating member exit, into said tissue site, stopping in said tissue site, and withdrawing out of said tissue site; an analyte detecting member positioned to receive fluid from a wound created by said penetrating member, said detection member configured to determine a concentration of an analyte in the fluid using a sample of less than 1 mL of the fluid; and a human interface providing at least one output.

189. A device for use with penetrating member driver to penetrate tissue, the device comprising: a single cartridge having a plurality of openings; a plurality of penetrating members having a sharpened tips movable to penetrate tissue; a plurality of analyte sensors coupled to said single cartridge; a sterility barrier covering said openings.

190. The device of claim 189 wherein said analyte sensors are positioned on the cartridge to receive body fluid from a wound in the tissue created by a penetrating member.

191. The device of claim 189 wherein said analyte sensors are electrochemical sensors.

192. The device of claim 189 wherein said analyte sensor are potentiometric sensors.

193. The device of claim 189 wherein said analyte sensors are configured to determine analyte levels using a body fluid sample of less than about 1 microliter.

194. The device of claim 189 wherein said sterility barrier, prior to being breached, maintains a sterile environment inside said openings.

195. A device for use with a penetrating member driver to penetrate tissue, the device comprising: a single cartridge having a plurality of cavities; a plurality of penetrating members coupled to said single cartridge and couplable to the penetrating member driver, said penetrating members movable to extend outward to penetrate tissue; a plurality of analyte sensors coupled to said single cartridge, said sensors receiving body fluid entering said cavities.

196. The device of claim 195 wherein said sensors define a portion of said cavities.

197. The device of claim 195 further comprising a sterility barrier covering said cavities.

198. The device of claim 195 wherein said analyte sensors are electrochemical sensors.

199. The device of claim 195 wherein said analyte sensor are potentiometric sensors.

200. The device of claim 195 wherein said analyte sensors are configured to determine analyte levels using a body fluid sample of less than about 1 microliter.

201. The device of claim 195 wherein at least some of said analyte sensors are positioned on a bottom surface of said cavities.

202. The device of claim 195 wherein at least some of said analyte sensors are positioned on a side surface of said cavities.

203. The device of claim 195 wherein at least some of said analyte sensors are positioned on a top surface of said cavities.

204. A device for use with a penetrating member driver to penetrate tissue, the device comprising: a single cartridge having a plurality of openings and a plurality of penetrating member cavities; a plurality of penetrating members at least partially contained in said cavities; a plurality of sensors attached to a substrate, said substrate couplable to said single cartridge in manner positioning at least one of said sensors with each of said plurality of cavities.

205. The device of claim 204 wherein said substrate comprises a material selected from: polymer, metallic foil, or paper.

206. The device of claim 204 wherein said sensors define a portion of said cavities.

207. The device of claim 204 further comprising a sterility barrier covering a plurality of said openings.

208. The device of claim 204 wherein said analyte sensors are configured to determine analyte levels using a body fluid sample of less than about 1 microliter.

209. A device for use with a penetrating member driver to penetrate tissue, the device comprising: a single cartridge having a plurality of openings and a plurality of cavities; a plurality of penetrating members with at least one penetrating members in at least one of said cavities; a plurality of sensors on a layer of material couplable to said single cartridge wherein at least two of said cavities each has at least one sensor in fluid communication with one of said cavities, said sensors positioned on the cartridge to receive body fluid from a wound in the tissue created by the penetrating member.

210. A lancing system for use with a penetrating member driver, said system comprising: means for housing a plurality of penetrating members and analyte sensors; means for releasing one of said penetrating member from a sealed enclosure on said housing means; means for operatively coupling one of said penetrating member to said penetrating member driver; wherein one of said analyte sensors receives body fluid from a wound created in said tissue by one of said penetrating members.

211. A manufacturing method comprising: providing a cartridge having a plurality of cavities for holding penetrating members; sealing a plurality of cavities with a sterility barrier; providing said cartridge with a plurality of analyte sensors by coupling a sensor layer to the cartridge.

212. The method of claim 211 wherein said sensor layer comprises said analyte sensors secured to a material selected from the following: polymer, foil, or paper.

213. The method of claim 211 wherein said sensors are electrochemical sensors.

214. The method of claim 211 wherein sealing creates a sterile environment in said cavities.

215. A method for determining a concentration of an analyte in body fluid, comprising: collecting a sample of body fluid of about 500 nL or less; filling a measurement zone of an electrochemical sensor with at least a portion of the sample; determining the concentration of the analyte in the sample using a potentiometric technique.

216. A method comprising: creating an unassisted flow of a body fluid from the patient; transporting a portion of the body fluid into an analyte sensor configured and arranged to determine the concentration of the analyte from 500 nL or less of body fluid; and determining the concentration of the analyte in the body fluid from the portion of the body fluid transported into the analyte sensor.

217. A device for use with a penetrating member driver to penetrate tissue, the device comprising: a single cartridge having a plurality of openings; a plurality of penetrating members having a sharpened tips movable to penetrate tissue; a plurality of optical analyte sensors coupled to said single cartridge; a sterility barrier covering said openings.

218. The device of claim 217 wherein cartridge includes a plurality of transparent windows aligned with said optical analyte sensors.

219. The device of claim 217 wherein said optical analyte sensors are positioned on the cartridge to receive body fluid from a wound in the tissue created by a penetrating member.

220. The device of claim 217 wherein said optical analyte sensors are configured to determine analyte levels using a body fluid sample of less than about 1 microliter.

221. The device of claim 217 wherein said sterility barrier, prior to being breached, maintains a sterile environment inside said openings.

222. A device for use with a penetrating member driver to penetrate tissue, the device comprising: a single cartridge having a plurality of cavities; a plurality of penetrating members coupled to said single cartridge and couplable to the penetrating member driver, said penetrating members movable to extend outward to penetrate tissue; a plurality of optical analyte sensors coupled to said single cartridge, said sensors receiving body fluid entering said cavities.

223. The device of claim 222 wherein cartridge includes a plurality of transparent windows aligned with said optical analyte sensors.

224. The device of claim 222 wherein said sensors define a portion of said cavities.

225. The device of claim 222 wherein said sensors are mounted in said cavities.

226. The device of claim 222 further comprising a sterility barrier covering said cavities.

227. The device of claim 222 wherein said optical analyte sensors are configured to determine analyte levels using a body fluid sample of less than about 1 micro liter.

228. The device of claim 222 wherein at least some of said optical analyte sensors are positioned on a bottom surface of said cavities.

229. The device of claim 222 wherein at least some of said optical analyte sensors are positioned on a side surface of said cavities.

230. The device of claim 222 wherein at least some of said optical analyte sensors are positioned on a top surface of said cavities.

231. A device for use with a penetrating member driver to penetrate tissue, the device comprising: a single cartridge having a plurality of openings and a plurality of penetrating member cavities; a plurality of penetrating members at least partially contained in said cavities; a plurality of sensors attached to a substrate, said substrate couplable to said single cartridge in manner positioning at least one of said sensors with each of said plurality of cavities.

232. The device of claim 231 wherein said substrate comprises a material selected from: polymer, metallic foil, or paper.

233. The device of claim 231 wherein said substrate comprises a laminate made from combinations of any of the following: polymer, metallic foil, or paper.

234. The device of claim 231 wherein said sensors define a portion of said cavities.

235. The device of claim 231 further comprising a sterility barrier covering a plurality of said openings.

236. The device of claim 231 wherein said optical analyte sensors are configured to determine analyte levels using a body fluid sample of less than about 1 micro liter.

237. A device for use with a penetrating member driver to penetrate tissue, the device comprising: a single cartridge having a plurality of openings and a plurality of cavities; a plurality of penetrating members with at least one penetrating members in at least one of said cavities; a plurality of sensors on a layer of material couplable to said single cartridge wherein at least two of said cavities each has at least one sensor in fluid communication with one of said cavities, said sensors positioned on the cartridge to receive body fluid from a wound in the tissue created by the penetrating member.

238. A lancing system for use with a penetrating member driver, said system comprising: means for housing a plurality of penetrating members and optical analyte sensors; means for releasing one of said penetrating member from a sealed enclosure on said housing means; means for operatively coupling one of said penetrating member to said penetrating member driver; wherein one of said optical analyte sensors receives body fluid from a wound created in said tissue by one of said penetrating members.

239. A body fluid sampling system for use on a tissue site, the system comprising: a single drive force generator; a plurality of penetrating members operatively coupled to said force generator, said force generator moving each of said members along a path out of a housing having a penetrating member exit, into said tissue site, stopping in said tissue site, and withdrawing out of said tissue site; and a flexible support member coupling said penetrating members to define a linear array, said support member being movable and configured to move each of said penetrating members to a launch position associated with said force generator.

240. The system of claim 239 further comprising an analyte detecting member.

241. The system of claim 239 further comprising a plurality of analyte detecting members positioned to receive body fluid.

242. The system of claim 239, further comprising: a sample chamber with an opening for transport of a body fluid into the sample chamber, the sample chamber being sized to receive no more than 1.0 mL of the body fluid.

243. The system of claim 239, further comprising: an analyte detecting member coupled to a sample chamber, the analyte detecting member being configured to to determine a concentration of an analyte in a body fluid using a sample that does not exceed a volume of 1 mL of a body fluid disposed in the sample chamber.

244. The system of claim 239, further comprising: a tissue stabilizer device coupled to the housing.

245. The system of claim 244, wherein the tissue stabilizer device is configured to enhance fluid flow from a target tissue.

246. The system of claim 244, wherein the tissue stabilizer device creates a stretching of a skin surface.

247. The system of claim 244, wherein the tissue stabilizer device is configured to apply a force to a target tissue and cause the target tissue to press in an inward direction relative to the housing member.

248. The system of claim 244, wherein the tissue stabilizing member applies a stimulation to a target tissue.

249. A body fluid sampling system for use on a tissue site, the system comprising: a drive force generator; a plurality of penetrating members operatively coupled to said force generator, said force generator moving each of said members along a path out of a housing having a penetrating member exit, into said tissue site, stopping in said tissue site, and withdrawing out of said tissue site; a flexible support member coupling said penetrating members to define a linear array, said support member being movable and configured to move each of said penetrating members to a launch position associated with said force generator; and an analyte detection member positioned to receive fluid from a wound created by said penetrating member, said detection member configured to determine a concentration of an analyte in the fluid using a sample of less than 1 mL of the fluid.

250. A body fluid sampling system for use on a tissue site, the system comprising: a drive force generator; a penetrating member having an elongate portion without a molded attachment and operatively coupled to said force generator; a sterility enclosure creating a sterile environment around at least a tip of said penetrating member, said penetrating member breaching said sterile environment during actuation; a skin stabilizing member associated with said housing and positioned to at least partially surround an impact location of the penetrating member on the tissue site; a user interface configured to relay at least one of, penetrating member performance or a penetrating member setting.

251. A body fluid sampling system for use on a tissue site, the system comprising: a drive force generator; a penetrating member having an elongate portion without a molded attachment and operatively coupled to said force generator; a sterility enclosure creating a sterile environment around at least a tip of said penetrating member, said penetrating member breaching said sterile environment during actuation; a skin stabilizing member associated with said housing and positioned to at least partially surround an impact location of the penetrating member on the tissue site; and a human interface providing at least one output.

252. A body fluid sampling system for use on a tissue site, the system comprising: a drive force generator; a penetrating member operatively coupled to said force generator, said force generator moving said member along a path out of a housing having a penetrating member exit, into said tissue site, stopping in said tissue site, and withdrawing out of said tissue site; wherein said penetrating member is an elongate member without a molded attachment; a coupler on said force generator configured to engage at least a portion of said elongate portion of the penetrating member and drive said member along a path into a tissue site and withdrawn from a tissue site; an analyte detecting member positioned to receive fluid from a wound created by said penetrating member, said detection member configured to determine a concentration of an analyte in the fluid using a sample of less than 1 mL of the fluid.

253. A body fluid sampling system for use on a tissue site, the system comprising: a drive force generator; a penetrating member having an elongate portion without a molded attachment and operatively coupled to said force generator; a sterility enclosure covering at least a tip of said penetrating member, said sterility enclosure removed from said penetrating member prior to actuation of the member and positioned so that the penetrating member will not contact said enclosure during actuation; an analyte detecting member positioned to receive fluid from a wound created by said penetrating member, said detection member configured to determine a concentration of an analyte in the fluid using a sample of less than 1 mL of the fluid.

254. A body fluid sampling system for use on a tissue site, the system comprising: a drive force generator; a penetrating member having an elongate portion without a molded attachment and operatively coupled to said force generator; a sterility enclosure creating a sterile environment around at least a tip of said penetrating member, said penetrating member breaching said sterile environment during actuation; an analyte detecting member positioned to receive fluid from a wound created by said penetrating member, said detection member configured to determine a concentration of an analyte in the fluid using a sample of less than 1 mL of the fluid.

255. A tissue penetrating system, comprising: a plurality of cartridges each with a distal port and a proximal port; a plurality of penetrating members each coupled to a cartridge, each penetrating member having a sharpened distal tip and a shaft portion slidably disposed within the cartridge; and a seal formed by a fracturable material between the penetrating member and the cartridge, the seal being positioned at least one of a distal port or a proximal port of the cartridge.

256. The system of claim 255, further comprising: a plurality of cartridges integrated in a cassette.

257. The system of claim 256, wherein each cartridge has an exit port, and upon launch each penetrating member exists from the exit port.

258. The system of claim 255, further comprising: an analyte detecting member.

259. The system of claim 255, further comprising: a plurality of analyte detecting members each coupled to a penetrating member.

260. The system of claim 255, further comprising: a sample chamber with an opening for transport of a body fluid into the sample chamber, the sample chamber being sized to receive no more than 1.0 .mu.L of the body fluid.

261. The system of claim 255, further comprising: an analyte detecting member coupled to a sample chamber, the analyte detecting member being configured to determine a concentration of an analyte in a body fluid using a sample that does not exceed a volume of 1 .mu.L of a body fluid disposed in the sample chamber.

262. The system of claim 255, further comprising: a tissue stabilizer device coupled to the housing.

263. The system of claim 262, wherein the tissue stabilizer device is configured to enhance fluid flow from a target tissue.

264. The system of claim 262, wherein the tissue stabilizer device creates a stretching of a skin surface.

265. The system of claim 262, wherein the tissue stabilizer device is configured to apply a force to a target tissue and cause the target tissue to press in an inward direction relative to the housing member.

266. The system of claim 262, wherein the tissue stabilizing member applies a stimulation to a target tissue.

267. The system of claim 255, wherein each penetrating member each penetrating members is an elongate member without molded attachments.

268. The system of claim 255, further comprising, a belt for holding the penetrating members in an array configuration.

269. The system of claim 255, further comprising: a tape device configured to hold the penetrating members in an array configuration.

270. The system of claim 255, further comprising: a plurality of connectors between penetrating members for holding the penetrating members in an array configuration.

271. The system of claim 255, further comprising: a support structure for receiving the penetrating members.

272. The system of claim 271, wherein the support structure is a bandolier.

273. The system of claim 271, wherein the support structure is a drum.

274. A tissue penetrating system, comprising: a cartridge with a distal port and a proximal port; a plurality of penetrating members each with a sharpened distal tip and a shaft portion slidably disposed within the cartridge; and a seal formed by a fracturable material between the penetrating member and the cartridge, the seal being positioned at least one of a distal port or a proximal port of the cartridge.

275. A tissue penetrating system, comprising: a plurality of penetrating members each having a sharpened distal tip; a penetrating member driver; and a plurality of cartridges coupled in an array and each housing a penetrating member, each cartridge configured to permit the penetrating member driver to engage each of the penetrating members sequentially, each cartridge having a plurality of seals positioned to provide that the sharpened distal tip remains in a sterile environment before penetrating a target site, each penetrating being launched without breaking a seal.

276. A method of penetrating a tissue site, comprising: providing a tissue penetrating system that includes a cartridge, a sample chamber, a penetrating member and at least one seal that maintains the penetrating member in a sterile condition prior to launch of the penetrating member; fracturing at least a portion of the seal prior to launch of the penetrating member; launching the penetrating member to a target tissue; and receiving a body fluid in the sample chamber of the tissue penetrating system.

277. A body fluid sampling system for use on a tissue site, the system comprising: a drive force generator; a penetrating member having an elongate portion without a molded attachment and operatively coupled to said force generator; a sterility enclosure creating a sterile environment around at least a tip of said penetrating member, said penetrating member breaching said sterile environment during actuation; and a user interface configured to relay at least one of, penetrating member performance or a penetrating member setting.

278. A body fluid sampling system for use on a tissue site, the system comprising: a drive force generator; a penetrating member having an elongate portion without a molded attachment and operatively coupled to said force generator; a sterility enclosure creating a sterile environment around at least a tip of said penetrating member, said penetrating member breaching said sterile environment during actuation; and a human interface providing at least one output.

279. A body fluid sampling system for use on a tissue site, the system comprising: a drive force generator; a penetrating member having an elongate portion without a molded attachment and operatively coupled to said force generator; a sterility enclosure covering at least a tip of said penetrating member, said sterility enclosure removed from said penetrating member prior to actuation of the member and positioned so that the penetrating member will not contact said enclosure during actuation.

280. A body fluid sampling system for use on a tissue site, the system comprising: a drive force generator; a penetrating member having an elongate portion without a molded attachment and operatively coupled to said force generator; a sterility enclosure creating a sterile environment around at least a tip of said penetrating member, said penetrating member breaching said sterile environment during actuation.

281. A tissue penetrating system, comprising: a plurality of cartridges each with a distal port and a proximal port; a plurality of penetrating members each coupled to a cartridge, each penetrating member having a sharpened distal tip and a shaft portion slidably disposed within the cartridge; a seal formed by a fracturable material between the penetrating member and the cartridge, the seal being positioned at least one of a distal port or a proximal port of the cartridge; and a user interface configured to relay at least one of, skin penetrating performance or a skin penetrating setting.

282. A tissue penetrating system, comprising: a plurality of cartridges each with a distal port and a proximal port; a plurality of penetrating members each coupled to a cartridge, each penetrating member having a sharpened distal tip and a shaft portion slidably disposed within the cartridge; a seal formed by a fracturable material between the penetrating member and the cartridge, the seal being positioned at least one of a distal port or a proximal port of the cartridge; and a human interface coupled providing at least one output.

283. The system of claim 282, wherein the at least one output is selected from, a penetration event of a penetrating member, number of penetrating members remaining, time of day, alarm, penetrating member trajectory waveform profile information, force for last penetration event, the last penetration event, how or low battery status, analyte status, time to change cassette status, jamming malfunction, and system status.

284. A body fluid sampling system for use on a tissue site, the system comprising: a drive force generator; a penetrating member having an elongate portion without a molded attachment and operatively coupled to said force generator; a sterility enclosure covering at least a tip of said penetrating member, said sterility enclosure removed from said penetrating member prior to actuation of the member and positioned so that the penetrating member will not contact said enclosure during actuation; and a tissue stabilizing member associated with said housing and positioned to at least partially surround an impact location of the penetrating member on the tissue site.

285. A body fluid sampling system for use on a tissue site, the system comprising: a drive force generator; a penetrating member having an elongate portion without a molded attachment and operatively coupled to said force generator; a sterility enclosure creating a sterile environment around at least a tip of said penetrating member, said penetrating member breaching said sterile environment during actuation; and a tissue stabilizing member associated with said housing and positioned to at least partially surround an impact location of the penetrating member on the tissue site.

286. A body fluid sampling system for use on a tissue site, the system comprising: a drive force generator; a penetrating member operatively coupled to said force generator, said force generator moving said member along a path out of a housing having a penetrating member exit, into said tissue site, stopping in said tissue site, and withdrawing out of said tissue site; an analyte detection member positioned to receive fluid from a wound created by said penetrating member, said detection member configured to determine a concentration of an analyte in the fluid using a sample of less than 1 mL of the fluid; and a tissue stabilizing member associated with said housing and positioned to at least partially surround an impact location of the penetrating member on the tissue site.

287. A device for use with a penetrating member driver to penetrate tissue, the device comprising: a single cartridge having a plurality of penetrating members; a plurality of analyte detecting members, said analyte detecting members positioned to receive body fluid from a wound in the tissue created by the penetrating member.

288. A device for use with a penetrating member driver to penetrate tissue, the device comprising: a single cartridge having a plurality of openings; a plurality of penetrating members having a sharpened tips movable to penetrate tissue; a plurality of optical analyte detecting members coupled to said single cartridge; a sterility barrier covering said openings.

289. The device of claim 288 wherein cartridge includes a plurality of transparent windows aligned with said optical analyte detecting members.

290. The device of claim 288 wherein said optical analyte detecting members are positioned on the cartridge to receive body fluid from a wound in the tissue created by a penetrating member.

291. The device of claim 288 wherein said optical analyte detecting members are configured to determine analyte levels using a body fluid sample of less than about 1 micro liter.

292. The device of claim 288 wherein said sterility barrier, prior to being breached, maintains a sterile environment inside said openings.

293. A device for use with a penetrating member driver to penetrate tissue, the device comprising: a single cartridge having a plurality of cavities; a plurality of penetrating members coupled to said single cartridge and couplable to the penetrating member driver, said penetrating members movable to extend outward to penetrate tissue; a plurality of optical analyte detecting members coupled to said single cartridge, said analyte detecting members receiving body fluid entering said cavities.

294. The device of claim 293 wherein cartridge includes a plurality of transparent windows aligned with said optical analyte detecting members.

295. The device of claim 293 wherein said analyte detecting members define a portion of said cavities.

296. The device of claim 293 wherein said analyte detecting members are mounted in said cavities.

297. The device of claim 293 further comprising a sterility barrier covering said cavities.

298. The device of claim 293 wherein said optical analyte detecting members are configured to determine analyte levels using a body fluid sample of less than about 1 microliter.

299. The device of claim 293 wherein at least some of said optical analyte detecting members are positioned on a bottom surface of said cavities.

300. The device of claim 293 wherein at least some of said optical analyte detecting members are positioned on a side surface of said cavities.

301. The device of claim 293 wherein at least some of said optical analyte detecting members are positioned on a top surface of said cavities.

302. A device for use with a penetrating member driver to penetrate tissue, the device comprising: a single cartridge having a plurality of openings and a plurality of penetrating member cavities; a plurality of penetrating members at least partially contained in said cavities; a plurality of analyte detecting members attached to a substrate, said substrate couplable to said single cartridge in manner positioning at least one of said analyte detecting members with each of said plurality of cavities.

303. The device of claim 302 wherein cartridge includes a plurality of optically transparent portions aligned with said optical analyte detecting members.

304. The device of claim 302 wherein said substrate comprises a material selected from: polymer, metallic foil, or paper.

305. The device of claim 302 wherein said substrate comprises a laminate made from combinations of any of the following: polymer, metallic foil, or paper.

306. The device of claim 302 wherein said analyte detecting members define a portion of said cavities.

307. The device of claim 302 further comprising a sterility barrier covering a plurality of said openings.

308. The device of claim 302 wherein said optical analyte detecting members are configured to determine analyte levels using a body fluid sample of less than about 1 microliter.

309. A device for use with a penetrating member driver to penetrate tissue, the device comprising: a single cartridge having a plurality of openings and a plurality of cavities; a plurality of penetrating members with at least one penetrating members in at least one of said cavities; a plurality of analyte detecting members on a layer of material couplable to said single cartridge wherein at least two of said cavities each has at least one analyte detecting member in fluid communication with one of said cavities, said analyte detecting members positioned on the cartridge to receive body fluid from a wound in the tissue created by the penetrating member.

310. A manufacturing method comprising: providing a cartridge having a plurality of cavities for holding penetrating members; sealing a plurality of cavities with a sterility barrier; providing said cartridge with a plurality of optical analyte detecting members by coupling a analyte detecting member layer to the cartridge.

311. The method of claim 310 further comprising providing said cartridge with a plurality of optically transparent portions aligned with said optical analyte detecting members.

312. The method of claim 310 wherein said analyte detecting member layer comprises said optical analyte detecting members secured to a material selected from the following: polymer, foil, or paper.

313. The method of claim 310 wherein sealing creates a sterile environment in said cavities.

314. The method of claim 310 further comprising applying a second sterility barrier to said cartridge.

315. A device for use in penetrating tissue to obtain a body fluid sample, comprising: a cartridge having a plurality of cavities; and a plurality of penetrating member slidably coupled to the cartridge, each of said penetrating members at least partially housed in one of said cavities and being moveable relative to the other ones of the penetrating members along a path out of the cartridge and into tissue; a sterility barrier covering a plurality of openings on said cartridge and creating a sterile environment in the plurality of cavities.

316. A device comprising: a cartridge defining a plurality of cavities; and a plurality of penetrating members at least partially contained in said cavities of the single cartridge wherein the penetrating members are slidably movable to extend outward from said cartridge to penetrate tissue, said cavities each having a longitudinal opening providing access to an elongate portion of the penetrating member; a sterility barrier coupled to said cartridge, said sterility barrier covering a plurality of the longitudinal openings.

317. A device comprising: a cartridge defining a plurality of cavities; and a plurality of penetrating members at least partially contained in said cavities of the single cartridge wherein the penetrating members are slidably movable to extend outward from lateral openings on said cartridge to penetrate tissue; a sterility barrier coupled to said cartridge, said sterility barrier covering a plurality of said lateral openings.

318. A manufacturing method comprising: providing a cartridge having a plurality of cavities for holding penetrating members; sealing a plurality of cavities with a seal layer; providing a plurality of analyte analyte detecting members by coupling a analyte detecting member layer to the cartridge.

319. A device for use in penetrating tissue to obtain a body fluid sample, comprising: a cartridge; and a plurality of penetrating members slidably coupled to the cartridge, each of said penetrating members having a distal end sufficiently sharp to pierce tissue and each of said penetrating members being moveable relative to the other ones of the penetrating members, so that the distal end of the respective penetrating member is movable to penetrate tissue; wherein each of said penetrating member is a bare lancet does not penetrate an outer sterility barrier during actuation.

320. A device comprising: a cartridge having a plurality of cavities; and a plurality of penetrating members at least partially contained in said cavities of the single cartridge wherein the penetrating members are slidably movable to extend outward from lateral openings on said cartridge to penetrate tissue; a sterility barrier coupled to said cartridge, said sterility barrier covering a plurality of said lateral openings, wherein the sterility barrier covering the lateral openings is configured to be moved so that a penetrating member exits the lateral opening without contacting the barrier.

321. A method comprising: providing a cartridge having a plurality of cavities; inserting a plurality of penetrating members at least partially contained in said cavities of the cartridge wherein the penetrating members are slidably movable to extend outward from lateral openings on said cartridge to penetrate tissue; adding a sterility barrier to said cartridge, said sterility barrier covering a plurality of said lateral openings.

322. A manufacturing method comprising: providing a cartridge having a plurality of cavities for holding penetrating members; sterilizing said cartridge while each of said cavities is in a sealed condition and the cartridge contains a plurality of penetrating members; using a planar sheet of sterility barrier material to cover a plurality of said cavities to create a sterile environment inside each of said cavities.

323. A method comprising: providing a cartridge having a plurality of bare lancets; moving at least a portion of a sterility barrier such that an active one of said bare lancets exits the cartridge to penetrate tissue without contacting said sterility barrier; retracting said active one of said bare lancets back into the cartridge after penetrating tissue.

324. A device for use with a penetrating member driver to penetrate tissue, the device comprising: a single cartridge having a plurality of openings; a plurality of penetrating members having a sharpened tips movable to penetrate tissue; a plurality of analyte analyte detecting members coupled to said single cartridge; a sterility barrier covering said openings.

325. A device for use with a penetrating member driver to penetrate tissue, the device comprising: a single cartridge having a plurality of cavities; a plurality of penetrating members coupled to said single cartridge and couplable to the penetrating member driver, said penetrating members movable to extend outward to penetrate tissue; a plurality of analyte analyte detecting members coupled to said single cartridge, said analyte detecting members receiving body fluid entering said cavities.

326. A device for use with a penetrating member driver to penetrate tissue, the device comprising: a single cartridge having a plurality of openings and a plurality of penetrating member cavities; a plurality of penetrating members at least partially contained in said cavities; a plurality of analyte detecting members attached to a substrate, said substrate couplable to said single cartridge in manner positioning at least one of said analyte detecting members with each of said plurality of cavities.

327. A device for use with a penetrating member driver to penetrate tissue, the device comprising: a single cartridge having a plurality of openings and a plurality of cavities; a plurality of penetrating members with at least one penetrating members in at least one of said cavities; a plurality of analyte detecting members on a layer of material couplable to said single cartridge wherein at least two of said cavities each has at least one analyte detecting member in fluid communication with one of said cavities, said analyte detecting members positioned on the cartridge to receive body fluid from a wound in the tissue created by the penetrating member.

328. A manufacturing method comprising: providing a cartridge having a plurality of cavities for holding penetrating members; sealing a plurality of cavities with a sterility barrier; providing said cartridge with a plurality of analyte analyte detecting members by coupling a analyte detecting member layer to the cartridge.

329. A body fluid sampling system for use on a tissue site, the system comprising: a drive force generator; a penetrating member having an elongate portion without a molded attachment and operatively coupled to said force generator; a sterility enclosure covering at least a tip of said penetrating member, said sterility enclosure removed from said penetrating member prior to actuation of the member and positioned so that the penetrating member will not contact said enclosure during actuation; an analyte detecting member positioned to receive fluid from a wound created by said penetrating member.

330. The system of claim 329, wherein said detection member configured to determine a concentration of an analyte in the fluid using a sample of less than 1 .mu.L of the fluid.

331. A body fluid sampling system for use on a tissue site, the system comprising: a drive force generator; a penetrating member having an elongate portion without a molded attachment and operatively coupled to said force generator; a sterility enclosure creating a sterile environment around at least a tip of said penetrating member, said penetrating member breaching said sterile environment during actuation; an analyte detecting member positioned to receive fluid from a wound created by said penetrating member.

332. The system of claim 331, wherein said detection member configured to determine a concentration of an analyte in the fluid using a sample of less than 1 .mu.L of the fluid.

333. The system of claim 332 further comprising: a skin stabilizer device suitable for stretching a surface of a tissue site, said skin stabilizer at least partially surrounding the penetrating member exit; an analyte detecting member positioned to receive fluid from a wound created by said penetrating member, said detection member configured to determine a concentration of an analyte in the fluid using a sample of less than 1 .mu.L of the fluid.

334. The system of claim 332 further comprising: a user interface for transmitting at least one input between a user; an analyte detecting member positioned to receive fluid from a wound created by said penetrating member, said detection member configured to determine a concentration of an analyte in the fluid using a sample of less than 1 .mu.L of the fluid.

335. A body fluid sampling system for use on a tissue site, the system comprising: a drive force generator; a plurality of penetrating members operatively coupled to said force generator, said force generator moving each of said members along a path out of a housing having a penetrating member exit, into said tissue site, stopping in said tissue site, and withdrawing out of said tissue site; a flexible support member coupling said penetrating members to define a linear array, said support member being movable and configured to move each of said penetrating members to a launch position associated with said force generator; an analyte detection member positioned to receive fluid from a wound created by said penetrating member.

336. The system of claim 335, wherein said detection member configured to determine a concentration of an analyte in the fluid using a sample of less than 1 .mu.L of the fluid.

337. A skin penetrating system, comprising: a housing member; a penetrating member positioned in the housing member, and a tissue pressure applicator coupled to the housing member.

338. A skin penetrating system, comprising: a housing member; a penetrating member positioned in the housing member, and an analyte detecting member coupled to a sample chamber, the analyte detecting member being configured to determine a concentration of an analyte in a body fluid using a sample of less than 1 .mu.L of a body fluid disposed in the sample chamber.

339. A tissue penetrating system, comprising: a housing a penetrating member positioned in the housing; a seal coupled to the penetrating member to maintain the penetrating member in a sterile environment.

340. The system of claim 337, further comprising: a seal formed by a fracturable material between the penetrating member and the cartridge, the seal being positioned at least one of a distal port or a proximal port of the cartridge.

341. The system of claim 340, further comprising: a second fracturable seal located at least one of the distal port or proximal port of cartridge.

Description
REFERENCE TO RELATED APPLICATIONS

[0001] The present application is a continuation of U.S. patent application Ser. No. 10/230,851, filed Aug. 29, 2002 which claims priority to German Patent Application No. DE 101 42 232.6, filed Aug. 29, 2001, which are hereby incorporated by reference in their entirety.

BACKGROUND

[0002] The invention concerns an analytical device which contains a lancet and an analytical test element. The invention also concerns a process for manufacturing such an analytical device.

[0003] The examination of blood samples in clinical diagnostics enables the early and reliable recognition of pathological states as well as a specific and well-founded monitoring of physical conditions. Medical blood diagnostics always requires the collection of a blood sample from the individual to be examined. Whereas in hospitals and in doctor's offices several millilitres of blood are usually collected by venepuncture from a person to be examined for analysis in order to carry out many laboratory tests, individual analyses which are directed towards one parameter nowadays often only require blood quantities ranging from a few microlitres down to less than one microlitre. Such small quantities of blood do not require a laborious and painful venepuncture. Instead it is sufficient to push a sterile sharp lancet into a finger pad or earlobe of the person to be examined to collect blood through the skin and thus to obtain a few microlitres of blood or less for analysis. This method is particularly suitable when it is possible to carry out the analysis of the blood sample immediately after blood collection.

[0004] Lancets and suitable instruments for them (so-called blood withdrawal instruments, blood lancet devices or--as they are referred to in the following--lancing aids) which enable blood collection that is as painfree and reproducible as possible are available especially for so-called home monitoring i.e. where medical laymen carry out simple analyses of the blood by themselves and are used in particular by diabetics to collect blood regularly and several times daily to monitor the blood glucose concentration. Furthermore the use of lancets with lancing aids is intended to reduce the psychological barrier associated with piercing one's own body which is particularly important for children that suffer from diabetes and need regular blood glucose tests. The commercially available instruments (lancing aids) and lancets Glucolet.RTM. from Bayer AG and Softclix.RTM. from Roche Diagnostics GmbH are mentioned as examples of lancets and lancing aids. Such lancets and instruments (lancing aids) are for example the subject matter of WO-A 98/48695, EP-A 0 565 970, U.S. Pat. No. 4,442,836 or U.S. Pat. No. 5,554,166.

[0005] Personal blood sugar determination (so-called home monitoring) is today a world-wide method in diabetes monitoring. Blood sugar instruments of the prior art such as the Accu-Chek Sensor (from Roche Diagnostics) are composed of a measuring instrument into which a test element (test strip, sensor) is inserted. The test strip is contacted with a drop of blood which has previously been collected from the finger pad by means of a lancing aid. The numerous system components (lancet, lancing aid, test strip and measuring instrument) need a lot of space and require a relatively complex handling. There are now also systems with a high degree of integration which are thus more simple to operate. These for example include the AccuCheck Compact (from Roche Diagnostics), the Glucometer Dex (from Bayer Diagnostics) and the Soft-Sense (from Medisense). In the two former systems the test strips are stored in the measuring instrument in magazines and are available for the measurement.

[0006] A next step in miniaturization is for example to integrate several functions or functional elements into a single analytical device (disposable). For example the operating process can be considerably simplified by a suitable combination of the lancing process and sensory analyte concentration detection on a test strip. There are the following examples of this in the prior art:

[0007] EP-B 0 199 484 (Audio Bionics) describes an analytical device ("disposable"; abbreviated dispo) containing an integrated lancet which is actuated by the instrument (see FIG. 9 for example). The lancet is retracted again after the puncture by means of a specific spring mounting ("spring-mounted lance means"). The dispo contains a so-called "wick means" through which the sample liquid is passed from the body surface to the analytical area which is an optically analysable test field.

[0008] A method is described in U.S. Pat. No. 6,143,164 (E. Heller & Comp.) in which a body opening (for example a small puncture or incision through the skin) is made and subsequently body fluid is transported into a sensor and examined there for the presence of an analyte. For this purpose U.S. Pat. No. 6,143,164 discloses an analytical device in which a lancing device is attached to a sensor test strip. The sample liquid is transported from the body opening to the actual detection element of the sensor for example again by means of a wick or a capillary gap/channel.

[0009] WO 99/26539 (Mercury Diagnostics), U.S. Pat. No. 5,951,492 (Mercury Diagnostics) and U.S. Pat. No. 6,056,701 (Amira Medical) describe, inter alia, collection devices for body fluids comprising an elongate handle; a test field being attached to its head region.

[0010] U.S. Pat. No. 6,032,059 (Abbott) and U.S. Pat. No. 6,014,577 (Abbott) describe a disposable containing a needle which is used to pierce the skin. Body fluid which is previously sucked into the needle by capillary action is analysed by a sensor integrated into the needle.

[0011] U.S. Pat. No. 5,801,057 (Smart et al.) describes a disposable made of silicon containing an integrated hollow needle. A collection chamber for aspirated body fluid is located at one end of this hollow needle. The concentration of a blood component can be determined in the body fluid by a suitable reaction chemistry.

[0012] U.S. Pat. No. 5,035,704 (Lambert et al.) discloses a system for collecting blood containing a magazine for disposables. It is possible to integrate a lancet element into the dispos. A blood drop is transferred to the test field by direct skin contact and can be increased by applying a vacuum.

[0013] U.S. Pat. No. 6,132,449 (Agilent Technologies) discloses an integrated dispo with a puncturing and measuring function. The puncturing element is activated perpendicular to the dispo plane whereby it passes through the dispo. The wound opening is in direct contact with several capillary structures which transport the emerging blood into a separate analytical part of the dispo.

[0014] A key problem in collecting blood using a so-called "integrated disposable" (in which the lancet and test element are connected together or form a single unit) is the fact that, after puncture, the capillary blood usually does not automatically emerge from the wound. This adverse effect is increased by directly contacting a disposable with the wound opening. After a puncture the blood drop must be actively conveyed to the skin surface by for example mechanically opening the wound and/or applying gentle pressure to the tissue around the wound area (for example by simple "finger milking"). Application of a vacuum can assist this process.

[0015] Experiments in the laboratory have shown that it is advantageous to keep the wound open during the period of blood collection. However, this fact results in a complicated movement process of the dispo since a very rapid piercing motion and a slow blood withdrawal movement can only be achieved with a waiting time in the system. Only a few of the dispo designs proposed in the prior art are suitable for this.

[0016] A rigid protruding lancet tip has a tendency to cause unintentional injury when collecting the blood drop. Hence a lancing device which moves relative to the disposable is preferable. However, this requirement in combination with the dispos known in the prior art leads to a complicated and thus expensive dispo design.

[0017] A further difficulty with known dispos is to ensure the sterility of the lancet for the period until it is used. In the prior art it is known that the tip can be protected by a cap which is manually removed before use. However, such a cap impairs the automation of blood sugar measurements. Previously described concepts which would in principle enable an automated blood sugar determination with an integrated disposable have the disadvantage that there is a latent risk of contaminating the lancet needle tip. Components of the test field (chemicals, biological components, adhesives etc.) can migrate within the dispo via the air or over the surfaces. Thus a sterilization of the needle tip carried out initially is in no way sufficient without further protective measures to meet the requirements for a sterile medical product.

[0018] The lancets of the prior art usually have a metal lancet needle with a tip which can be optionally ground. In order to facilitate the handling of the lancet and optionally to attach it in a lancing device, a plastic lancet body made of a rigid, injection-mouldable material is usually injected onto the lancet needle in many embodiments. In the unused state the tip of the lancet needle is surrounded by a protective covering to ensure its sterility. This is usually composed of the same rigid material as the actual lancet body and usually forms one unit with this body. The protective covering can be separated from the lancet body before using the lancet and removed from the tip of the lancet needle. For this purpose there is usually a weakened point between the lancet body and protective cover. After the lancet has been used, the tip of the lancet needle is unprotected and is hence a potential source of injury to the user and possibly to other persons.

[0019] The object of the present invention was therefore to eliminate the disadvantages of the prior art and in particular the disadvantages mentioned above. In particular the object of the present invention was to provide analytical devices (synonymous with "disposables", abbreviated: "dispos") which do not have the disadvantages of the prior art. In particular the dispo according to the invention should ensure the sterility of the lancets until they have been used while simultaneously integrating the lancet and test element (test strip, sensor). Of course it is also intended to describe a manufacturing process f