Lancet device with depth adjustment and lancet removal system and method

• US 9,179,867 B2
• Filed: 06/18/2008
• Issued: 11/10/2015
• Est. Priority Date: 06/19/2007
• Status: Active Grant

• Current Assignee: Stat Medical Devices Incorporated
• Original Assignee: Stat Medical Devices Incorporated
• Inventors: Schraga, Steven, Schwartz, Brian, Fuller, Paul R.
• Primary Examiner(s): EASTWOOD, DAVID C
• Application Number:
  US12/665,600
• Publication Number:
  US 20100274273A1
• Time in Patent Office: 2,701 Days
• Field of Search: 606181-183, 604/22, 604/117, 604/110, 604207-211, 600/573, 600/583
• US Class Current: 1/1
• CPC Class Codes: A61B 5/1405 Devices for taking blood samples devices for taking samples of other body liquids A61B10/0045
• CPC Class Codes: A61B 5/1411 by percutaneous method, e.g. by lancet
• CPC Class Codes: A61B 5/1444 Safety means, e.g. for locking cannula removing or disposing of used needles or syringes A61M5/3205
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150198 Depth adjustment mechanism at the proximal end of the carrier of the piercing element
• 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 5/150824 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 5/15192 comprising driving means, e.g. a spring, for retracting the lancet unit into the driving device housing
• 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

Lancet device includes a housing, a removable front cap mounted to the housing, a lancet holding member, and a trigger. A system is utilized for placing the lancet device in a trigger-set or armed position. A depth adjustment system includes a member that is at least partially rotatably mounted and that has an axis of rotation arranged substantially perpendicular to a center axis of the lancet holding member. An ejection system is utilized for at least one of preventing axial movement of the lancet holding member and removing or ejecting a lancet from the lancet holding member.

Claims

1. A lancet device comprising:

a housing;

a removable front cap mounted to the housing;

a lancet holding member;

a trigger;

an arming system comprising a grippable cocking member structured and arranged to place the lancet device in a trigger-set or armed position;

a depth adjustment system comprising a member that is at least partially rotatably mounted and that has an axis of rotation arranged substantially perpendicular to a center axis of the lancet holding member;

an ejection system comprising an ejector having a portion extending outside a sidewall opening of the housing and being located closer to a front end of the housing than to a rear end of the housing;

the sidewall opening of the housing being arranged on an area of the housing located between the trigger and a wall of the housing located opposite the trigger; and

said ejection system being structured and arranged to at least one of;

prevent axial movement of the lancet holding member;

or

remove or eject a lancet from the lancet holding member.

2. The lancet device of claim 1, wherein the portion extending outside a sidewall opening of the housing comprises a manually activated slide button.

3. The lancet device of claim 1, wherein the ejection system each of prevents axial movement of the lancet holding member and removes or ejects the lancet from the lancet holding member.

4. The lancet device of claim 1, wherein the member that is at least partially rotatably mounted comprises a thumbwheel having plural cam or stop surfaces.

5. The lancet device of claim 1, wherein the member that is at least partially rotatably mounted comprises a thumbwheel having indicia.

6. The lancet device of claim 1, wherein the member that is at least partially rotatably mounted comprises a thumbwheel having indicia which is visible through an opening located in the housing.

7. The lancet device of claim 1, wherein the member that is at least partially rotatably mounted comprises a thumbwheel having portions which can be gripped by a user from outside of the housing.

8. The lancet device of claim 1, wherein the member that is at least partially rotatably mounted comprises a thumbwheel having oppositely arranged portions which project outside of the housing.

9. The lancet device of claim 1, further comprising a first spring configured to cause movement of the lancet holding member towards a puncturing position and a second spring configured to cause a back cap to move towards an initial position from a retracted position.

10. The lancet device of claim 1, further comprising a first spring configured to cause movement of the lancet holding member towards a puncturing position, a second spring configured to cause a back cap to move towards an initial position from a retracted position, and a third spring configured to cause a slide member of the ejection system to move towards an initial position from an extended position.

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

arranging the lancet device adjacent against a user'"'"'s skin; and

triggering the lancet device so that a lancet is caused to penetrate the user'"'"'s skin.

12. A lancet device comprising:

a housing;

a removable front cap mounted to the housing;

a lancet holding member having a front end adapted to receive therein a removable lancet;

a trigger;

an arming system comprising a movable cocking member structured and arranged to place the lancet device in a trigger-set or armed position;

a depth adjustment system comprising a member having plural cam surfaces; and

a lancet ejection system located closer to a front end of the housing than to a rear end of the housing; and

said lancet ejection system comprising;

a movement preventer configured to prevent axial movement of the lancet holding member during lancet ejection;

a lancet remover portion configured to remove or eject a lancet from the lancet holding member; and

a front cap remover portion configured to contact a portion of the front cap during lancet ejection.

13. The lancet device of claim 12, wherein the ejection system comprises a manually activated slide button.

14. The lancet device of claim 12, wherein the ejection system each of prevents axial movement of the lancet holding member, removes or ejects the lancet from the lancet holding member, and removes or ejects the front cap.

15. The lancet device of claim 12, wherein the member having plural cam surfaces is at least partially rotatably mounted and comprises a thumbwheel.

16. The lancet device of claim 15, wherein the thumbwheel comprises indicia.

17. The lancet device of claim 16, wherein the indicia is visible through an opening located in the housing.

18. The lancet device of claim 15, wherein the thumbwheel comprises one of;

portions which can be gripped by a user from outside of the housing, and

oppositely arranged portions which project outside of the housing.

19. The lancet device of claim 12, further comprising a first spring configured to cause movement of the lancet holding member towards a puncturing position and a second spring configured to cause a back cap to move towards an initial position from a retracted position.

20. The lancet device of claim 12, further comprising a first spring configured to cause movement of the lancet holding member towards a puncturing position, a second spring configured to cause a back cap to move towards an initial position from a retracted position, and a third spring configured to cause a slide member of the ejection system to move towards an initial position from an extended position.

21. A method of puncturing a surface of skin using the lancet device of claim 12, the method comprising:

arranging the lancet device adjacent against a user'"'"'s skin; and

triggering the lancet device so that a lancet is caused to penetrate the user'"'"'s skin.

22. A lancet device comprising:

a housing having an ergonomic shape;

a removable front cap mounted to the housing;

a movably mounted lancet holding member having a front end adapted to receive therein a removable lancet;

a trigger arranged on a side wall of the housing;

an arming system comprising a movable cocking member configured to place the lancet device in a trigger-set or armed position;

a depth adjustment system comprising a member having plural cam surfaces;

a locking member configured to prevent axial movement of the lancet holding member; and

a lancet ejector arranged closer to a front end of the housing than to a rear end of the housing and being configured to remove or eject a lancet from the lancet holding member,

wherein the cocking member is located behind the member with plural cam surfaces and the lancet ejector is located in front of the member with plural cam surfaces.

23. A lancet device comprising:

a housing;

a removable front cap;

a movably mounted lancet holding member having a front end adapted to receive therein a removable lancet;

a trigger arranged on at least one of;

a lateral side of the lancet device;

or

a side wall of the housing;

an arming system configured to place the lancet device in a trigger-set or armed position;

the arming system comprising a cocking member arranged at a rear end of the housing that can move away from the housing when the lancet device is placed in the trigger-set or armed position;

a first spring configured to move the lancet holding member to a puncturing position;

a second spring that is compressed when the cocking member is moved away from the housing;

an ejection system configured to remove or eject a lancet from the lancet holding member; and

the ejection system comprising a slidable ejector including each of;

a first portion that extends outside the housing and that can be moved by a user;

a second portion adapted to extend into a portion of the lancet holding member and to contact the removable lancet when installed therein; and

a third portion that can slide over a front cap mounting portion of the lancet device when the front cap is removed from the front cap mounting portion and when the slidable ejector is slid to an ejection position.

24. The lancet device of claim 23, further comprising:

the lancet device utilizing a depth of penetration adjustment;

or

a rotatable depth adjustment member arranged within the housing.

25. The lancet device of claim 23, further comprising:

a depth adjustment system comprising plural stop surfaces;

or

a locking member configured to prevent axial movement of the lancet holding member.

26. The lancet device of claim 23, wherein the front cap is removable when rotated relative to the housing and the lancet holding member comprises a deflecting portion that can be contacted by a portion of the trigger.

27. The lancet device of claim 23, wherein the slidable ejector and the trigger are each arranged at least one of:

closer to the front end than to the rear end of the housing;

or

closer to a front end than to a rear end of the lancet device.