Lancet Release Mechanism

• US 20090043326A1
• Filed: 03/03/2006
• Published: 02/12/2009
• Est. Priority Date: 03/04/2005
• Status: Active Grant

• Current Assignee: Ascensia Diabetes Care Holdings AG (PHC Holdings Corporation)
• Original Assignee: Bayer Healthcare LLC (Bayer AG)
• Inventors: Lok, Derek, Ruan, Tiaming, Zhong, Weiping
• Granted Patent: US 8,784,444 B2
• Time in Patent Office: Days
• US Class Current: 606/182
• 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 5/150183 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 5/150816 by tactile feedback, e.g. vibration
• 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 lancet-release mechanism is adapted to be incorporated into a lancing device. The lancing device is adapted to receive a lancet assembly therein. The lancing device is adapted to move the lancet assembly between a resting position, a cocking position, and a puncture position. The lancet-release mechanism comprises a lancet holder and a cantilever beam. The lancet holder forms a central aperture. The central aperture is adapted to receive the lancet assembly therein. The lancet holder further forms a plurality of protuberances thereon. The cantilever beam has a projection extending therefrom. The projection is adapted to engage the plurality of protuberances located on the lancet holder The projection is adapted to separate the plurality of protuberances from each other so as to enlarge the central aperture.

Claims

1. A lancet-release mechanism adapted to be incorporated into a lancing device, the lancing device being adapted to receive a lancet assembly therein, the lancing device being adapted to move the lancet assembly between a resting position, a cocking position, and a puncture position, the lancet release mechanism comprising:

a lancet holder having a central aperture, the central aperture being adapted to receive the lancet assembly therein, the lancet holder further having a plurality of protuberances thereon; and

a cantilever beam having a projection extending therefrom, the projection being adapted to engage the plurality of protuberances located on the lancet holder, the projection being adapted to separate the plurality of protuberances from each other so as to enlarge the central aperture.

2. The lancet-release mechanism of claim 1, wherein the lancing device is adapted to removably attach to an endcap.

3. The lancet-release mechanism of claim 2, wherein the endcap includes an extension adapted to assist in inhibiting an inadvertent depression of the cantilever beam.

4. The lancet-release mechanism of claim 1, wherein the lancet holder includes a ridge adapted to engage a groove located on the lancet assembly.

5. A lancet-release mechanism adapted to be incorporated into a lancing device, the lancing device adapted to receive a lancet assembly therein, the lancing device being adapted to move the lancet assembly between a resting position, a cocking position, and a puncture position, the lancing device comprising:

a lancet holder having a central aperture, the central aperture being adapted to receive the lancet assembly therein, the lancet holder being at least partially divided into a first portion and a second portion; and

a first beam attached to the first portion of the lancet holder, the first beam having a release button located opposite the lancet holder, the first beam and release button being adapted to separate the first portion of the lancet holder from the second portion of the lancet holder when the release button is depressed, the separation of the first portion from the second portion enlarging the central aperture.

6. The lancet-release mechanism of claim 5, wherein depressing the release button in a direction of a longitudinal axis of the lancet holder causes the first portion of the lancet holder to separate from the second portion.

7. The lancet-release mechanism of claim 5, further comprising a second beam, the second beam having a release button located opposite the lancet holder, the second beam being attached to the second portion of the lancet holder, the second beam and release button being adapted to separate the second portion of the lancet holder from the first portion of the lancet holder when the release button is depressed.

8. The lancet-release mechanism of claim 7, wherein depressing the release buttons in a direction substantially perpendicular to a longitudinal axis of the lancet holder causes the first and second portions of the lancet holder to separate.

9. The lancet-release mechanism of claim 5, wherein the release button is externally accessible from the lancing device.

10. The lancet-release mechanism of claim 5, wherein the lancet holder includes a ridge adapted to engage a groove located on the lancet assembly.

11. A lancet-release mechanism adapted to be incorporated into a lancing device, the lancing device being adapted to receive a lancet assembly therein, the lancing device being adapted to move the lancet assembly between a resting position, a cocking position, and a puncture position, the lancet release mechanism comprising:

a lancet holder having a central aperture, the central aperture being adapted to receive the lancet assembly therein, the lancet holder further having a plurality of protuberances thereon; and

a release button having a projection extending therefrom, the projection being adapted to engage the plurality of protuberances located on the lancet holder, the projection being adapted to separate the plurality of protuberances from each other so as to enlarge the central aperture.

12. The lancet-release mechanism of claim 11, further comprising a spring mechanism located between at least of portion of the release button and the lancing device.

13. The lancet-release mechanism of claim 12, wherein the spring mechanism is an elastically deformable foam material.

14. The lancet-release mechanism of claim 11, wherein the release button is distinct from a main housing of the lancing device.