KINKED LANCET

• US 20080269791A1
• Filed: 05/23/2008
• Published: 10/30/2008
• Est. Priority Date: 11/25/2005
• Status: Abandoned Application

• Current Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Original Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Inventors: Hoenes, Joachim, Harttig, Herbert, Haar, Hans-Peter, Zimmer, Volker, Kraemer, Uwe, Deck, Frank
• Application Number:
  US12/126,554
• Publication Number:
  US 20080269791A1
• Time in Patent Office: Days
• US Class Current: 606/181
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150282 for piercing elements, e.g. blade, lancet, canula, needle
• CPC Class Codes: A61B 5/150358 Strips for collecting blood, e.g. absorbent optical reagent test strips G01N21/8483; chemical reagent test strips G01N33/4875, G01N33/52
• CPC Class Codes: A61B 5/150442 Blade-like piercing elements, e.g. blades, cutters, knives, for cutting the skin
• CPC Class Codes: A61B 5/15113 Manually triggered, i.e. the triggering requires a deliberate action by the user such as pressing a drive button
• CPC Class Codes: A61B 5/15115 Driving means for propelling the piercing element to pierce the skin, e.g. comprising mechanisms based on shape memory alloys, magnetism, solenoids, piezoelectric effect, biased elements, resilient elements, vacuum or compressed fluids
• CPC Class Codes: A61B 5/15146 Devices loaded with multiple lancets simultaneously, e.g. for serial firing without reloading, for example by use of stocking means. multiple simultaneous cutting or piercing A61B5/150977
• CPC Class Codes: A61B 5/15153 Multiple piercing elements stocked in a single compartment
• CPC Class Codes: A61B 5/15169 Characterized by a rolled strip
• CPC Class Codes: A61B 5/15171 Characterized by propelling the piercing element perpendicular to the direction of movement of the strip
• CPC Class Codes: A61B 5/15176 Stocking means comprising cap, cover, sheath or protection for aseptic stocking

Abstract

A device for obtaining body fluid is described which has at least one lancet comprising a lancet body and a tip. The lancet has at least one structure with an altered stiffness which can also be referred to as a bending region. This structure preferably has a lower or reduced stiffness than the remaining lancet body such that the lancet can be bent in this region when a force acts thereon. In this process, the orientation of the tip is changed relative to the remaining lancet body. This change in orientation is preferably out of the lancet body plane.

Claims

1. A device for obtaining body fluid, comprising:

a substantially planar carrier tape;

at least one lancet arranged substantially horizontally on the carrier tape, the lancet comprising a lancet body and a tip; and

the lancet comprising a bending region, wherein a force applied to the lancet bends the lancet in the bending region and reorients the tip relative to a longitudinal axis of the lancet body.

2. The device of claim 1, wherein the at least one lancet is substantially flat.

3. The device of claim 1, wherein the reorientation of the tip comprises the tip projecting from the substantially planar carrier tape.

4. The device of claim 1, wherein the bending region comprises a region of reduced stiffness.

5. The device of claim 4, wherein the region of reduced stiffness extends to the tip.

6. The device of claim 4, wherein, when the force is applied to the lancet, areas adjoining the bending region are reoriented.

7. The device of claim 1, wherein the at least one lancet is aligned substantially parallel to a longitudinal direction of the carrier tape.

8. The device of claim 1, wherein the at least one lancet is aligned substantially transverse to a longitudinal direction of the carrier tape.

9. The device of claim 1, further comprising at least one test element arranged on the carrier tape.

10. The device of claim 1, wherein a proximal end of the lancet is secured to the carrier tape.

11. The device of claim 1, wherein the tip comprises a sterile protector.

12. The device of claim 11, wherein the sterile protector is separated from the lancet tip during the reorientation.

13. The device of claim 1, wherein the bending region comprises a plurality of bending regions angled relative to one another.

14. A system for obtaining body fluid, comprising:

a substantially planar carrier tape;

at least one lancet arranged substantially horizontally on the carrier tape, the lancet comprising a lancet body and a tip; and

a bending element operable to exert a force on the lancet, the force changing the orientation of the tip relative to the lancet body.

15. The system of claim 14, wherein the bending element comprises a control element that bends the lancet at different locations in a bending region of the lancet.

16. A device for obtaining body fluid, comprising:

a lancet having a tip and a lancet body; and

the lancet comprising a bending region, wherein a force applied to the lancet bends the lancet in the bending region and reorients the tip relative to a longitudinal axis of the lancet body.

17. The device of claim 16, further comprising a carrier on which the lancet is arranged.

18. The device of claim 17, wherein the carrier is substantially disk shaped.

19. The device of claim 17, wherein the carrier and the lancet are formed in one piece.

20. The device of claim 17, wherein, prior to use, the lancet comprises an unbent configuration in which the lancet is arranged substantially horizontally on the carrier.

21. The device of claim 20, wherein the tip extends from the carrier when the tip is reoriented.

22. The device of claim 21, wherein the tip returns to a substantially horizontal arrangement on the carrier after use of the lancet.

23. The device of claim 17, further comprising a test element arranged on the carrier.

24. The device of claim 23, wherein the lancet and the test element are arranged side by side.

25. The device of claim 24, wherein the lancet and the test element make contact after the reorientation of the tip as a result of a second movement of the lancet or the test element.

26. The device of claim 16, further comprising a sterile protector that covers or surrounds the lancet tip before the tip is reoriented.

27. The device of claim 26, wherein the sterile protector is destroyed or pierced when the lancet tip is reoriented.

28. The device of claim 16, wherein the bending region is located in the tip and in a part of the lancet body which is configured to be coupled to a drive unit.

29. The device of claim 28, wherein the lancet comprises a drive direction that is substantially parallel to the reoriented lancet tip and substantially orthogonal to a plane defined by the lancet body.

30. The device of claim 16, wherein the bending region comprises a plurality of regions with reduced stiffness.

31. The device of claim 30, wherein the length of the bent tip can be selected.

32. The device of claim 16, wherein the lancet comprises a curved saber shape.

33. The device of claim 16, wherein the lancet tip is configured to draw body fluid.

34. The device of claim 33, wherein the tip comprises a capillary.

35. A method of withdrawing body fluid from a body part using a bendable lancet having a lancet body and a tip, the lancet being supplied in a substantially horizontal arrangement on a substantially planar carrier, the method comprising:

applying a force to the lancet, wherein the lancet bends in a bending region thereof and the tip is reoriented to project away from the carrier; and

puncturing the body part with the tip.

36. The method of claim 35, wherein the lancet body remains attached to the carrier during the applying of the force to the lancet.

37. The method of claim 35, further comprising returning the tip to the substantially horizontal arrangement on the carrier after the puncture.

38. The method of claim 37, further comprising rolling the used lancet and a portion of the carrier to which the lancet is connected onto a spool.

39. The method of claim 35, wherein, during the applying of the force to the lancet, a portion of the lancet body bends downwardly as the tip is reoriented upwardly.

40. The method of claim 35, wherein the lancet bends along multiple axes during the applying of the force to the lancet.

41. The method of claim 35, further comprising transferring a body fluid sample obtained from the puncture from the tip to a test element arranged on the carrier.

42. The method of claim 35, wherein, during the applying of the force to the lancet, the tip becomes separated from a sterile protector.

43. The method of claim 42, wherein, during the applying of the force to the lancet, the tip pierces the sterile protector.

44. The method of claim 35, further comprising drawing a body fluid sample into the tip by capillary action.

45. The method of claim 35, further comprising exerting the force on the lancet with a bending element.

46. The method of claim 45, further comprising bending the lancet in a plurality of different locations.

47. The method of claim 35, wherein the puncture comprises driving the lancet in a puncture direction that is substantially parallel to the reoriented lancet tip and substantially orthogonal to a plane defined by the carrier.