Single Use Lancing Device

• US 20090299397A1
• Filed: 10/23/2006
• Published: 12/03/2009
• Est. Priority Date: 10/25/2005
• Status: Active Grant

• Current Assignee: Ascensia Diabetes Care Holdings AG (PHC Holdings Corporation)
• Original Assignee: Bayer Healthcare LLC (Bayer AG)
• Inventors: Ruan, Tieming, Kheiri, Mohammad A.
• Granted Patent: US 8,469,984 B2
• Time in Patent Office: Days
• US Class Current: 606/182
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• 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 5/150519 Details of construction of hub, i.e. element used to attach the single-ended needle to a piercing device or sampling device
• CPC Class Codes: A61B 5/150549 Protectors removed by rotational movement, e.g. torsion or screwing
• CPC Class Codes: A61B 5/150564 Protectors removed by pulling or pushing
• CPC Class Codes: A61B 5/150717 manually removed
• 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 5/15117 comprising biased elements, resilient elements or a spring, e.g. a helical spring, leaf spring, or elastic strap
• CPC Class Codes: A61B 5/15144 comprising driving means, e.g. a spring, for retracting the piercing unit into the housing

Abstract

A lancing device comprises a housing, a trigger button, a drive spring and a protective cap. The housing forms an aperture and an opening opposite thereof. A lancet partially extends through the aperture. The trigger button is located near the opening. At least a portion of the trigger button is external to the housing. The drive spring is attached to and connects the lancet and the trigger button. The drive spring moves the lancet from the cocked position to the puncture position. The protective cap is removeably attached to the lancet opposite the drive spring and engages the housing when the cap is removeably attached to the lancet. The cap prevents the drive spring from moving the lancet to the puncture position prior to removing the cap from the lancet.

Claims

1. A lancing device adapted to move a lancet from a cocked position to a puncture position, the lancing device comprising:

a housing forming an aperture and an opening opposite the aperture, the lancet being adapted to partially extend through the aperture in the housing;

a trigger button located near the opening of the housing, at least a portion of the trigger button being external to the housing;

a drive spring attached to and connecting the lancet and the trigger button, the drive spring being adapted to move the lancet from the cocked position to the puncture position; and

a protective cap removeably attached to the lancet opposite the drive spring, the protective cap engaging the housing when the protective cap is removeably attached to the lancet, wherein the protective cap prevents the drive spring from moving the lancet to the puncture position prior to removal of the protective cap from the lancet.

2. The lancing device of claim 1, further comprising a plurality of cantilevers located generally parallel to each other, each of the plurality of cantilevers having a head, each of the heads of the cantilevers being adapted to engage the lancet after the protective cap is removed from the lancet.

3. The lancing device of claim 2, wherein the plurality of cantilevers is adapted to inhibit movement of the lancet to the puncture position prior to the trigger button being moved in the direction of the housing.

4. The lancing device of claim 3, wherein the cantilevers assist in moving the lancet to the puncture position once the trigger button is moved in the direction of the housing.

5. The lancing device of claim 3, wherein the cantilevers are further adapted to engage the lancet as the lancet moves from the puncture position to a resting position.

6. The lancing device of claim 1, wherein the aperture formed in a first end of the housing is longer in a second direction than in a first direction.

7. The lancing device of claim 6, wherein the aperture formed in the first end of the housing is generally elliptically shaped

8. The lancing device of claim 6, wherein the aperture formed in the first end of the housing is generally rectangular shaped.

9. The lancing device of claim 1, wherein the housing is formed by two substantially identical housing halves.

10. The lancing device of claim 1, wherein the housing is formed by a partial housing and a lid, the lid being attached to the partial housing by one or more hinges, the partial housing forming a central cavity, wherein the lancet, the drive spring, and a portion of the protective cap are located within the central cavity.

11. The lancing device of claim 1, wherein the trigger button includes a plurality of prongs extending therefrom, each of the plurality of prongs having a barbed end opposite the trigger button, each of the barbed ends being adapted to be received by a locking dent formed in the housing.

12. The lancing device of claim 11, wherein the locking dents are adapted to prevent the lancing device from being reused after the trigger button has been depressed.

13. A method for using a lancing device comprising the acts of:

providing a housing, a lancet, a plurality of cantilevers, a trigger button, and a protective cap, the housing forming an aperture and an opening opposite the aperture, the lancet being adapted to partially extend through the aperture in the housing, the plurality of cantilevers being located generally parallel to each other adjacent the aperture of the housing, the protective cap being removeably attached to the lancet opposite the trigger button, the protective cap engaging the housing when the protective cap is removeably attached to the lancet;

rotating the protective cap to detach the protective cap from the lancet;

removing the protective cap from the lancing device through the aperture, the removal of the protective cap causing the lancet to contact the plurality of cantilevers; and

depressing the trigger button to cause the lancet to force the plurality of cantilevers apart from one another, the separation of the cantilevers allowing the lancet to move to a puncture position.

14. The method of claim 13, wherein the plurality of cantilevers is adapted to assist in moving the lancet to the puncture position after the trigger button has been depressed.

15. The method of claim 13, wherein the trigger button includes a plurality of prongs extending therefrom, each of the plurality of prongs having a barbed end opposite the trigger button, each of the barbed ends being adapted to be received by a locking dent formed in the housing.

16. The method of claim 15, further comprising the act of inhibiting the lancing device from being reused by retaining the barbed ends within the locking dents after the barbed ends have been received therein.

17. The method of claim 13, further comprising the act of enclosing the housing after the lancet, the plurality of cantilevers, and a portion of the protective cap are inserted therein.

18. The method of claim 17, wherein the housing is formed by two substantially identical housing halves.

19. The method of claim 17, where the housing is formed by a partial housing and a lid, the lid being attached to the partial housing by one or more hinges.