Lancet device with combined trigger and cocking mechanism and method

• US 8,469,986 B2
• Filed: 03/30/2007
• Issued: 06/25/2013
• Est. Priority Date: 03/30/2007
• Status: Active Grant

• Current Assignee: Stat Medical Devices Incorporated
• Original Assignee: Stat Medical Devices Incorporated
• Inventors: Schraga, Steven
• Primary Examiner(s): MCEVOY, THOMAS M
• Application Number:
  US11/694,132
• Publication Number:
  US 20080243159A1
• Time in Patent Office: 2,279 Days
• Field of Search: 606181-185, 604/22, 604/110, 604/117, 604207-211, 604/131, 604134-137, 600/583
• US Class Current: 606/182
• CPC Class Codes: A61B 5/1411 by percutaneous method, e.g. by lancet
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150183 Depth adjustment mechanism using end caps mounted at the distal end of the sampling device, i.e. the end-caps are adjustably positioned relative to the piercing device housing for example by rotating or screwing
• CPC Class Codes: A61B 5/150412 Pointed piercing elements, e.g. needles, lancets for piercing the skin blade-like piercing elements A61B5/150442
• CPC Class Codes: A61B 5/150503 Single-ended needles hollow piercing element tip design A61B5/150396, needle sets for catheters A61M25/06, needles for bringing media into the body A61M5/32
• CPC Class Codes: A61B 5/150916 by blocking components, e.g. piston, driving device or fluid passageway
• CPC Class Codes: A61B 5/15111 Semi-automatically triggered, e.g. at the end of the cocking procedure, for instance by biasing the main drive spring or when reaching sufficient contact pressure, the piercing device is automatically triggered without any deliberate action by the user
• 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 5/15117 comprising biased elements, resilient elements or a spring, e.g. a helical spring, leaf spring, or elastic strap
• CPC Class Codes: A61B 5/1513 comprising linear sliding guides comprising tooth-shaped elements A61B5/15132
• CPC Class Codes: A61B 5/15142 Devices intended for single use, i.e. disposable
• CPC Class Codes: A61B 5/1519 comprising driving means, e.g. a spring, for propelling the piercing unit
• CPC Class Codes: A61B 5/15194 fully automatically retracted, i.e. the retraction does not require a deliberate action by the user, e.g. by terminating the contact with the patient's skin
• CPC Class Codes: A61B 5/157 Devices characterised by integrated means for measuring characteristics of blood

Abstract

Lancet device including a skin engaging end that includes a lancet opening through which a lancet needle may extend, a movably mounted holding member configured to receive a lancet, and a combined triggering and cocking system structured and arranged to move the holding member to a retracted position during a cocking phase and to cause the holding member to move to an extended position during a triggering phase. A method of puncturing a surface of skin using the lancet device includes disposing the skin engaging end against a user'"'"'s skin and manually activating the combined triggering and cocking system. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

Claims

1. A lancet device comprising:

a skin engaging surface that includes a lancet opening through which a lancet needle of a replaceable and removable lancet may extend;

a holding member retaining therein the lancet;

the lancet being movably guided along a linear direction; and

a combined triggering and cocking system structured and arranged to move the lancet to a retracted position during a cocking phase and to cause the lancet to move to an extended position during a triggering phase, the combined triggering and cocking system allowing both triggering and cocking of the lancet device by a single user motion,

wherein the combined triggering and cocking system comprises at least one member linearly movably mounted to a sidewall, the at least one member having a portion that protrudes outside of the sidewall, being movable relative to the sidewall from an original position to a triggering position, and having a portion which moves linearly from one side of an imaginary line defined by the linear direction to another side thereof during the cocking and triggering phases, and

wherein the holding member is movable back to an original position after triggering of the lancet device.

2. The lancet device of claim 1, wherein the lancet device comprises one of a meter lancet device, a blood glucose monitoring system, and a blood glucose meter.

50. A method of puncturing a surface of skin using the lancet device of claim 1, the method comprising:

providing the lancet device of claim 3;

disposing the skin engaging surface against a user'"'"'s skin; and

manually activating the combined triggering and cocking system to automatically cause triggering and/or substantially simultaneously cause triggering and cocking.

51. A method of puncturing a surface of skin using the lancet device of claim 3, the method comprising;

providing the lancet device of claim 1;

adjusting a set depth of penetration by rotating the lancet device to a desired set position;

disposing the skin engaging surface against a user'"'"'s skin; and

manually activating the combined triggering and cocking system.

3. A lancet device comprising:

a removable cap that when removed allows a user to install a lancet;

a skin engaging surface that includes a lancet opening through which a lancet needle may extend;

a holding member configured to receive therein a removable and replaceable lancet having a lancet needle;

the lancet being movable parallel to a central axis of the holding member; and

a combined triggering and cocking system comprising one portion disposed outside the lancet device and another portion disposed inside the lancet device, the combined triggering and cocking system allowing both triggering and cocking of the lancet device by a single user motion;

the portion arranged outside being movable along a linear direction relative to a sidewall of the lancet device;

the other portion being structured and arranged to cause movement of the lancet to a retracted position during a cocking phase and to allow the lancet to move to an extended position during a triggering phase,

wherein, when a user moves the portion disposed outside the lancet device, the other portion moves linearly from one side of the central axis of the holding member to another side of the central axis during at least the cocking phase, and

wherein the lancet and/or the holding member is movable back to an original position and/or intermediate position after triggering of the lancet device.

4. The lancet device of claim 3, wherein the combined triggering and cocking system is activated manually and automatically causes the lancet to move to the extended position during the triggering phase.

5. The lancet device of claim 3, wherein the combined triggering and cocking system performs the cocking phase before the triggering phase.

6. The lancet device of claim 3, wherein the combined triggering and cocking system activates the cocking phase and the triggering phase using linear movement.

7. The lancet device of claim 3, wherein the combined triggering and cocking system comprises at least one push-button.

8. The lancet device of claim 3, wherein the combined triggering and cocking system comprises at least one push-button mounted to one of two opposite sides of the lancet device.

9. The lancet device of claim 3, wherein the combined triggering and cocking system comprises two push-buttons mounted to opposite sides of the lancet device.

10. The lancet device of claim 3, wherein the combined triggering and cocking system comprises a push-button biased towards an extended position.

11. The lancet device of claim 3, wherein the combined triggering and cocking system comprises at least one push-button biased towards an extended position and movable towards the central axis of the holding member.

12. The lancet device of claim 3, wherein the lancet device comprises a meter lancet device.

13. The lancet device of claim 3, wherein the lancet device comprises a blood glucose monitoring system.

14. The lancet device of claim 3, wherein the lancet device comprises a blood glucose meter.

15. The lancet device of claim 3, wherein the combined triggering and cocking system is prevented from moving back to an original position after the triggering phase.

16. The lancet device of claim 3, wherein the combined triggering and cocking system is prevented from moving back to an original position after the cocking phase.

17. The lancet device of claim 3, wherein the combined triggering and cocking system is prevented from moving back to an original position after the cocking and triggering phases.

18. The lancet device of claim 3, wherein at least one of:

the lancet device has an adjustable depth of penetration arrangement;

the lancet device is a single-use lancet device; and

the lancet device is a multiple-use lancet device.

19. The lancet device of claim 3, wherein the removable cap comprises a front cover movably connected to one end of the lancet device.

20. The lancet device of claim 3, wherein the removable cap comprises a front cover removably connected to one end of the lancet device.

21. The lancet device of claim 3, wherein the removable cap comprises a front cover adjustably mounted to one end of the lancet device.

22. The lancet device of claim 21, wherein the front cover adjusts a depth of penetration of the lancet needle.

23. The lancet device of claim 21, wherein the front cover comprises a one-piece plastic or synthetic resin member.

24. The lancet device of claim 21, wherein the front cover comprises an arrangement for guiding movement of the lancet.

25. The lancet device of claim 21, wherein the front cover comprises an arrangement for biasing the lancet away from the extended position.

26. The lancet device of claim 21, wherein the front cover comprises an arrangement limiting movement of the lancet towards the extended position.

27. The lancet device of claim 3, further comprising a first spring structured and arranged to cause movement of the holding member towards the extended position and a second spring structured and arranged to cause movement of the holding member away from the extended position.

28. The lancet device of claim 27, wherein the first spring is larger in diameter than the second spring.

29. The lancet device of claim 27, wherein the first spring is made from a wire having a larger diameter than a wire of the second spring.

30. The lancet device of claim 27, wherein each of the first and the second springs comprise helical compression springs.

31. The lancet device of claim 27, wherein the second spring has one end coupled to a portion of the removable cap.

32. The lancet device of claim 27, wherein the second spring is removable with the cap.

33. The lancet device of claim 3, further comprising a first spring structured and arranged to cause movement of the lancet towards the extended position, a second spring structured and arranged to cause movement of the lancet away from the extended position, and a third spring structured and arranged to resist movement of the combined triggering and cocking system.

34. The lancet device of claim 3, further comprising a first spring structured and arranged to cause movement of the lancet towards the extended position, a second spring structured and arranged to cause movement of the lancet away from the extended position, and a third spring structured and arranged to compress during activation of the combined triggering and cocking system.

35. The lancet device of claim 3, further comprising a first spring structured and arranged to cause movement of the lancet towards the extended position, a second spring structured and arranged to cause movement of the lancet away from the extended position, and a third spring structured and arranged to increase in potential energy upon manual movement of a push-button activating the combined triggering and cocking system.

36. The lancet device of claim 3, further comprising a biasing member structured and arranged to resist manual movement of the combined triggering and cocking system.

37. The lancet device of claim 3, further comprising a biasing member structured and arranged to increase in potential energy upon manual movement of a push-button that activates the combined triggering and cocking system.

38. The lancet device of claim 3, wherein the combined triggering and cocking system is arranged on the removable cap.

39. The lancet device of claim 3, wherein the combined triggering and cocking system is arranged on the removable cap and the removable cap is movably mounted.

40. The lancet device of claim 3, wherein the combined triggering and cocking system is arranged on the removable cap, the removable cap having the skin engaging surface.

41. The lancet device of claim 3, wherein the holding member comprises a generally cylindrical cross-section.

42. The lancet device of claim 3, wherein the holding member comprises a generally polygonal cross-section.

43. The lancet device of claim 3, further comprising a fixed stop surface that is contacted by a movable stop surface of the lancet when the lancet moves to an extended position.

44. The lancet device of claim 3, wherein a front end of the holding member comprises an opening that is configured to removably receive the lancet.

45. The lancet device of claim 3, further comprising indica arranged on at least one of the front cap and a body of the lancet device.

46. The lancet device of claim 45, wherein the indicia is arranged on an outer circumferential surface.

47. The lancet device of claim 3, further comprising a front cover that rotates about an axis that runs through the lancet opening and the holding member.

48. The lancet device of claim 3, wherein the lancet device comprises a two-piece body.

49. The lancet device of claim 3, wherein the lancet device comprises an ergonomic shape.

52. A lancet device front section structured and arranged to be removably coupled to a lancet device body or a meter, the lancet device front section comprising:

a skin engaging surface that includes a lancet opening through which a lancet needle of a replaceable and removable lancet may extend;

an arrangement for connecting or mounting the lancet device front section to at least one of the lancet device body and the meter;

a manually activated combined triggering and cocking system structured and arranged to move a holding member and/or the lancet to a retracted position during a cocking phase and to allow the holding member and/or the lancet to move to an extended position during a triggering phase, the combined triggering and cocking system allowing both triggering and cocking of the lancet device by a single user motion;

the combined triggering and cocking system having a push-button disposed outside of a sidewall and being movable relative to the sidewall and another portion disposed inside of the sidewall; and

the other portion being structured and arranged to move linearly to cause movement of the lancet to a retracted position during a cocking phase and to allow the lancet to move to the extended position during the triggering phase,

wherein the lancet is movable back to an original position after triggering of the lancet device.

53. A lancet device comprising:

a skin engaging surface that includes a lancet opening through which a lancet needle of a replaceable and removable lancet may extend;

a holding member releasably retaining therein the lancet;

the lancet being movably guided along a linear direction;

a removable front cover that when removed allows a user to install the lancet onto the holding member; and

a combined triggering and cocking system structured and arranged to move the lancet to a retracted position during a cocking phase and to allow the lancet to move to an extended position during a triggering phase, the combined triggering and cocking system allowing both triggering and cocking of the lancet device by a single user motion,

wherein the combined triggering and cocking system comprises at least one member having a first portion capable of being depressed by a user outside and from a side of the lancet device and a second portion which is movable linearly from one side of an imaginary line defined by the linear direction to another side thereof,

wherein the first portion is located closer to a front end than to a rear end of the lancet device,

wherein, when the first portion is moved relative to the side of the lancet device to cause triggering, the second portion moves to the other side of the imaginary line, and

wherein the lancet is movable back to an original position after triggering of the lancet device.

54. The lancet device of claim 53, wherein the lancet device comprises one of a meter lancet device, a blood glucose monitoring system, and a blood glucose meter.