PRIME AND FIRE LANCING DEVICE WITH CONTACTING BIAS DRIVE AND METHOD

• US 20090281458A1
• Filed: 05/05/2009
• Published: 11/12/2009
• Est. Priority Date: 05/09/2008
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: LifeScan Scotland Limited (Johnson & Johnson)
• Inventors: FAULKNER, Allan James, CROSLAND, David Colin, YOUNG, Matthew James, FOLEY, Nicholas, TRICKETT, Paul
• Granted Patent: US 8,932,314 B2
• Time in Patent Office: Days
• US Class Current: 600/583
• CPC Class Codes: A61B 5/1411 by percutaneous method, e.g. by lancet
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/15019 Depth adjustment mechanism using movable stops located inside the piercing device housing and limiting the travel of the drive mechanism mechanisms using distal end caps A61B5/150183, mechanisms at the piercing element carrier proximal end A61B5/150198
• CPC Class Codes: A61B 5/150259 Improved gripping, e.g. with high friction pattern or projections on the housing surface or an ergonometric shape
• 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 5/150549 Protectors removed by rotational movement, e.g. torsion or screwing
• CPC Class Codes: A61B 5/150618 Integrally moulded protectors, e.g. protectors simultaneously moulded together with a further component, e.g. a hub, of the piercing element
• CPC Class Codes: A61B 5/150717 manually removed
• CPC Class Codes: A61B 5/150824 by visual feedback
• 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 5/15186 Devices loaded with a single lancet, i.e. a single lancet with or without a casing is loaded into a reusable drive device and then discarded after use; drive devices reloadable for multiple use
• 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

Abstract

Described and illustrated herein is an exemplary lancing device. The lancing device includes a first housing, second housing, movable member, lancet, and lancet depth adjustment member. The lancet depth adjustment member is captured by both the first and second housings so that the lancet depth adjustment member is rotatable relative to both housings to provide for a plurality of stop surfaces to the movable member. Other exemplary embodiments are also described.

Claims

1. A lancing device comprising:

a first housing having spaced apart proximal and distal ends disposed along a longitudinal axis;

a second housing disposed in the first housing in a fixed relationship with the first housing;

a movable member disposed in the second housing and configured for movement along the longitudinal axis and in the first housing;

a lancet coupled to the movable member; and

a lancet depth adjustment member captured by both the first and second housings so that the lancet depth adjustment member is rotatable relative to both housings to provide for a plurality of stop surfaces to the movable member.

2. The lancing device of claim 1, further comprising:

a first bias member located in the second housing to bias the moveable member in a direction towards the distal end;

a first actuator coupled to the movable member so that the movable member is positioned proximate the proximal end in a primed-position; and

a second actuator carried on a portion of the first actuator, the second actuator configured to allow the movable member to move from the primed-position to a position proximate the distal end.

3. The lancing device of claim 2, in which the moveable member includes a plurality of arms extending away from the longitudinal axis towards the distal end;

and further comprising;

a collet mounted on the plurality of arms for movement of the collet along the longitudinal axis on the plurality of arms from a first position of the collet in which the plurality of arms constrains the body of the lancet from movement and a second position of the collet in which the body of the lancet is free to move without constraint by the plurality of arms.

4. The lancing device of claim 3, further comprising:

a lancet ejection mechanism including;

a third actuator mounted to the first housing, the third actuator being disposed in;

a first position in which the third actuator is disengaged from both the lancet depth adjustment member and the moveable member, and

a second position in which the third actuator is connected to the moveable member with the depth adjustment member in a specific position so that a portion of the third actuator is displaced partially in a groove formed on a circumferential portion of the depth adjustment member to move the moveable member towards the distal end to eject the lancet.

5. The lancing device of claim 4, further comprising:

a collar disposed between the depth adjustment member and the collet, the collar configured to prevent movement of the collet towards the distal end.

6. The lancing device of claim 5, further comprising a cap to cover an aperture in which the lancet can extend from the depth adjustment member, the cap being connected to the depth adjustment member.

7. The lancing device of claim 1, in which the first housing comprises two halves connected together.

8. The lancing device of claim 1, in which the second housing comprises a unitary member connected to a positioning band coupled to the first housing, the second housing having at least one groove that extends through the unitary member along the longitudinal axis to allow communication from the inside of the second housing to the inside of the first housing.

9. The lancing device of claim 1, further comprising a second bias member configured to bias the moveable member in a direction towards the proximal end.

10. The lancing device of claim 9, in which the moveable member comprises at least one return arm that extends through the groove so that the moveable member is guided by the at least one return arm along a path defined by a groove.

11. The lancing device of claim 10, in which the second bias member comprises a helical spring disposed outside the second housing and connected to the at least one return arm.

12. The lancing device of claim 4, further comprising a third bias member coupled to the moveable member to bias the collet in a direction towards the distal end.

13. The lancing device of claim 4, in which the first bias member comprises a resilient member in contact with the moveable member.

14. The lancing device of claim 10, in which the second bias member is selected from a group consisting of springs, magnets, or combinations thereof.

15. A lancing device comprising:

a first housing having spaced apart proximal and distal ends disposed along a longitudinal axis;

a second housing disposed in the first housing in a fixed relationship with the first housing;

a movable member disposed in the second housing and configured for movement along the longitudinal axis and in the first housings;

a bias member located in the second housing to bias the moveable member in a direction towards the distal end;

a first actuator coupled to the movable member so that the movable member is positioned proximate the proximal end in a primed-position;

a second actuator carried on a portion of the first actuator, the second actuator configured to allow the movable member to move from the primed-position to a position proximate the distal end; and

a lancet coupled to the movable member.

16. The lancing device of claim 15, in which the moveable member includes a plurality of arms extending away from the longitudinal axis towards the distal end;

and further comprising;

a collet mounted on the plurality of arms for movement of the collet along the longitudinal axis on the plurality of arms from a first position of the collet in which the plurality of arms constrains the body of the lancet from movement and a second position of the collet in which the body of the lancet is free to move without constraint by the plurality of arms.

17. The lancing device of claim 16, further comprising:

a lancet ejection mechanism including;

a third actuator mounted to the first housing, the third actuator being disposed in;

a first position in which the third actuator is disengaged from both the lancet depth adjustment member and the moveable member, and

a second position in which the third actuator is connected to the moveable member with the depth adjustment member in a specific position so that a portion of the third actuator is displaced partially in a groove formed on a circumferential portion of the depth adjustment member to move the moveable member towards the distal end to eject the lancet.

18. The lancing device of claim 17, further comprising:

a collar disposed between the depth adjustment member and the collet, the collar configured to prevent movement of the collet towards the distal end.

19. The lancing device of claim 18, further comprising a cap to cover an aperture in which the lancet can extend from the depth adjustment member, the cap being connected to the depth adjustment member.

20. The lancing device of claim 15, in which the first housing comprises two halves connected together.

21. The lancing device of claim 15, in which the second housing comprises a unitary member connected to a positioning band coupled to the first housing, the second housing having at least one groove that extends through the unitary member along the longitudinal axis to allow communication from the inside of the second housing to the inside of the first housing.

22. The lancing device of claim 15, further comprising a second bias member configured to bias the moveable member in a direction towards the proximal end.

23. The lancing device of claim 22, in which the moveable member comprises at least one return arm that extends through the groove so that the moveable member is guided by the at least one return arm along a path defined by a groove.

24. The lancing device of claim 23, in which the second bias member comprises a resilient member disposed outside the second housing and connected to the at least one return arm.

25. The lancing device of claim 17, further comprising a third bias member coupled to the moveable member to bias the collet in a direction towards the distal end.

26. The lancing device of claim 17, in which the first bias member comprises a resilient member in contact with the moveable member.

27. The lancing device of claim 23, in which the second bias member comprises a helical spring.

28. A lancing device comprising:

a housing having spaced apart proximal and distal ends disposed along a longitudinal axis;

a lancet having a body and a lancing projection, at least the body being disposed in the housing;

a movable member disposed in the housing and configured for movement along the longitudinal axis, the moveable member includes a plurality of arms extending away from the longitudinal axis;

a collet mounted on the plurality of arms for movement of the collet along the longitudinal axis on the plurality of arms from a first position of the collet in which the plurality of arms constrains the body of the lancet from movement and a second position of the collet in which the body of the lancet is free to move without constraint by the plurality of arms.

29. The lancing device of claim 28, further comprising:

a first bias member located in the housing to bias the moveable member in a direction towards the distal end;

a first actuator coupled to the movable member so that the movable member is positioned proximate the proximal end in a primed-position; and

a second actuator carried on a portion of the first actuator, the second actuator configured to allow the movable member to move from the primed-position to a position proximate the distal end.

30. The lancing device of claim 29, further comprising:

a lancet ejection mechanism including;

a third actuator mounted to the housing, the third actuator being disposed in;

a first position in which the third actuator is disengaged from both the lancet depth adjustment member and the moveable member, and

a second position in which the third actuator is connected to the moveable member with the depth adjustment member in a specific position so that a portion of the third actuator is displaced partially in a groove formed on a circumferential portion of the depth adjustment member to move the moveable member towards the distal end to eject the lancet.

31. The lancing device of claim 30, further comprising:

a collar disposed between the depth adjustment member and the collet, the collar configured to prevent movement of the collet towards the distal end.

32. The lancing device of claim 31, further comprising a cap to cover an aperture in which the lancet can extend from the depth adjustment member, the cap being connected to the depth adjustment member.

33. The lancing device of claim 28, in which the housing comprises two halves connected together.

34. The lancing device of claim 28, further comprising a second housing in which the moveable member is disposed therein for movement in the second housing, the second housing comprising a unitary member connected to a positioning band coupled to the first housing, the second housing having at least one groove that extends through the unitary member along the longitudinal axis to allow communication from the inside of the second housing to the inside of the first housing.

35. The lancing device of claim 34, further comprising a second bias member configured to bias the moveable member in a direction towards the proximal end.

36. The lancing device of claim 35, in which the moveable member comprises at least one return arm that extends through the groove so that the moveable member is guided by the at least one return arm along a path defined by a groove.

37. The lancing device of claim 36, in which the second bias member comprises a resilient member disposed outside the second housing and connected to the at least one return arm.

38. The lancing device of claim 30, further comprising a third bias member coupled to the moveable member to bias the collet in a direction towards the distal end.

39. The lancing device of claim 30, in which the first bias member comprises a resilient member in contact with the moveable member.

40. The lancing device of claim 28, in which the second bias member comprises a helical spring.

41. A lancing device comprising:

a first housing having spaced apart proximal and distal ends disposed along a longitudinal axis;

a second housing disposed in the first housing in a fixed relationship with the first housing;

a movable member disposed in the second housing and configured for movement along the longitudinal axis; and

a lancet depth adjustment member that limits a travel of the movable member along the longitudinal axis towards the distal end, the lancet depth adjustment member being captured by both the first and second housings so that the lancet depth adjustment member is rotatable relative to both housings to provide for a plurality of stop surfaces to the movable member.

42. A lancing device comprising:

a first housing having spaced apart proximal and distal ends disposed along a longitudinal axis;

a second housing disposed in the first housing in a fixed relationship with the first housing;

a movable member disposed in the second housing and configured for movement along the longitudinal axis, the moveable member includes a plurality of arms extending away from the longitudinal axis towards the distal end;

a lancet having a body and a projection extending from the body of the lancet, the body of the lancet capable of being disposed in a volume defined by the plurality of arms of the moveable member; and

a collet mounted on the plurality of arms for movement of the collet along the longitudinal axis on the plurality of arms from a first position of the collet in which the plurality of arms constrains the body of the lancet from movement and a second position of the collet in which the body of the lancet is not constrained by the plurality of arms.