Lancing device for one skin puncture

• US 8,048,098 B2
• Filed: 07/13/2006
• Issued: 11/01/2011
• Est. Priority Date: 07/14/2005
• Status: Active Grant

• Current Assignee: Ascensia Diabetes Care Holdings AG (PHC Holdings Corporation)
• Original Assignee: Bayer Healthcare LLC (Bayer AG)
• Inventors: Creaven, John P.
• Primary Examiner(s): Hughes; S. Thomas
• Assistant Examiner(s): MILES, JONATHAN WADE
• Application Number:
  US11/988,713
• Publication Number:
  US 20090082798A1
• Time in Patent Office: 1,937 Days
• Field of Search: 606/181, 606/182, 606/167, 606/183, 604/136, 604/137, 604/138, 604/139, 600/573, 600/583
• US Class Current: 606/182
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150152 by an adequate mechanical impact on the puncturing location
• 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 5/150259 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 5/150824 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 5/1519 comprising driving means, e.g. a spring, for propelling the piercing unit

Abstract

A lancing device comprises a main housing, a movable housing, and a damping ring. The main housing forming an inner aperture that encloses a portion of a lancet assembly. The lancet assembly has a lancet body, a lancet-plunger housing, and a lance. The lancet assembly is adapted to move between a resting position, a cocking position, and a puncture position. The movable housing is adjacent to the main housing. The moveable housing is adapted to move from a resting position to a cocking position. The moveable housing is adapted to connect to the lancet assembly. The damping ring is adapted to engage the lancet assembly as the lancet assembly moves from the puncture position back towards the resting position to reduce movement of the lancet assembly back towards the puncture position.

Claims

1. A lancing device comprising:

a main housing forming an inner aperture enclosing a portion of a lancet assembly, the lancet assembly having a lancet body, a lancet-plunger housing, a damping ring, and a lance, the lancet assembly being adapted to move between a resting position, a cocking position, and a puncture position; and

a moveable housing adjacent the main housing, the moveable housing being adapted to move from a resting position to a cocking position, and being adapted to connect to the lancet assembly,

wherein the damping ring is adapted to engage the lancet-plunger housing as the lancet assembly moves from the puncture position back towards the resting position to reduce movement of the lancet assembly back towards the puncture position, the damping ring being directly coupled with an end surface of the lancet body such that the lancet-plunger housing abuts the damping ring in response to the lancet assembly being in the resting position and the cocking position, the lancet-plunger housing being outside of the main housing and spaced from the damping ring when the lancet assembly is in the puncture position.

2. The lancing device of claim 1, wherein the damping ring is a polymeric material.

3. The lancing device of claim 2, wherein the damping ring is a polymeric foam material.

4. The lancing device of claim 1, wherein the damping ring is a rubber material.

5. The lancing device of claim 1, wherein the lancet assembly further has a shaft portion being adapted to connect to the moveable housing.

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

a first spring adapted to connect to the main housing and the lancet body, the first spring being generally wrapped around the shaft portion of the lancet assembly, the first spring being compressed as the moveable housing is moved from the resting position to the cocking position, the first spring returning to a resting position as the moveable housing returns to the resting position; and

a second spring adapted to connect the lancet body and the lancet-plunger housing, the second spring extending as the lancet assembly moves from the cocking position to the puncture position, the second spring returning to a resting position as the lancet-plunger housing moves from the puncture position back towards the resting position.

7. The lancing device of claim 1, wherein the damping ring only damps the lancet assembly as the lancet assembly moves from the puncture position back towards the resting position.

8. A lancet assembly adapted to move between a resting position, a cocking position, and a puncture position, the lancet assembly comprising:

a lancet body adapted to move within a lancing device;

a lancet-plunger housing;

a lance connected to the lancet-plunger housing and being adapted to puncture the skin of a user;

a spring adapted to connect the lancet-plunger housing to the lancet body; and

a damping ring adapted to directly engage the lancet-plunger housing via an impact force as the lancet assembly moves from the puncture position back towards the resting position to reduce movement of the lancet assembly back towards the puncture position, the damping ring being directly coupled with an end surface of the lancet body such that the lancet-plunger housing abuts the damping ring in response to the lancet assembly being in the resting position and the cocking position and such that the lancet-plunger housing is spaced from the damping ring when the lancet assembly is in the puncture position,

wherein the lancet-plunger housing moves independently from the lancet body when the lancet assembly moves from the puncture position to the resting position.

9. The lancet assembly of claim 8, wherein the damping ring is a polymeric material.

10. The lancet assembly of claim 9, wherein the damping ring is a polymeric foam material.

11. The lancet assembly of claim 8, wherein the damping ring is a rubber material.

12. The lancet assembly of claim 8, wherein the spring further is adapted to extend as the lancet assembly moves from the cocking position to the puncture position, the spring returning to a resting position as the lancet assembly moves from the puncture position back towards the resting position.

13. The lancet assembly of claim 8, wherein the damping ring only damps the lancet-plunger housing as the lancet assembly moves from the puncture position back towards the resting position.

14. A lancing device comprising:

a main housing forming an inner aperture enclosing a portion of a lancet assembly, the lancet assembly having a lancet body, a lancet-plunger housing, a damping ring, and a lance, the lancet assembly being adapted to move between a resting position, a cocking position, and a puncture position;

a moveable housing adjacent the main housing, the moveable housing being adapted to move from a resting position to a cocking position, and being adapted to connect to the lancet assembly;

a first spring adapted to connect to the main housing and the lancet body, the first spring being generally wrapped around a shaft portion of the lancet assembly, the first spring being compressed as the moveable housing is moved from the resting position to the cocking position, the first spring returning to a resting position as the moveable housing returns to the resting position; and

a second spring adapted to connect the lancet body and the lancet-plunger housing, the second spring extending as the lancet assembly moves from the cocking position to the puncture position, the second spring returning to a resting position as the lancet assembly moves from the puncture position back towards the resting position,

wherein the damping ring is adapted to directly engage the lancet-plunger housing via an impact force as the lancet assembly moves from the puncture position back towards the resting position to reduce movement of the lancet assembly back towards the puncture position, the damping ring being directly coupled with an end surface of the lancet body such that the lancet-plunger housing abuts the damping ring in response to the lancet assembly being in the resting position and the cocking position, and wherein the lancet-plunger housing moves independently from the lancet body when the lancet assembly moves from the puncture position to the resting position and the lancet-plunger housing is outside of the main housing and spaced from the damping ring when the lancet assembly is in the puncture position.

15. The lancing device of claim 14, wherein the damping ring is a polymeric material.

16. The lancing device of claim 15, wherein the damping ring is a polymeric foam material.

17. The lancing device of claim 14, wherein the damping ring is a rubber material.

18. The lancing device of claim 14, wherein the damping ring only damps the lancet assembly as the lancet assembly moves from the puncture position back towards the resting position.