Lancet Release Mechanism

• US 20080140105A1
• Filed: 03/03/2006
• Published: 06/12/2008
• Est. Priority Date: 03/04/2005
• Status: Abandoned Application

• Current Assignee: Bayer Healthcare LLC (Bayer AG)
• Original Assignee: Bayer Healthcare LLC (Bayer AG)
• Inventors: Lok, Derek, Ruan, Tieming, Zhong, Weiping
• Application Number:
  US11/885,619
• Publication Number:
  US 20080140105A1
• 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 lancing device comprises a lancet assembly and a lancet holder. The lancet assembly has a groove formed thereon. The lancet holder forms a central aperature adapted to receive the lancet assembly. The lancet holder includes a ridge extending into the central aperture. The ridge is adapted to engage the groove of the lancet assembly. The lancet holder is adapted to move the lancet assembly between a resting position, a cocking position, and a puncture position.

Claims

1. A lancing device comprising:

a lancet assembly having a groove formed thereon; and

a lancet holder forming a central aperture adapted to receive the lancet assembly, the lancet holder including a ridge extending into the central aperture, the ridge adapted to engage the groove of the lancet assembly, the lancet holder adapted to move the lancet assembly between a resting position, a cocking position, and a puncture position.

2. The lancing device of claim 1, wherein the groove and ridge are adapted to reduce the frictional contact between the lancet holder and the lancet assembly.

3. The lancing device of claim 1, wherein the groove and ridge are adapted to increase the frictional contact between the lancet holder and the lancet assembly.

4. A lancing device comprising:

a lancet assembly having a ridge formed thereon; and

a lancet holder forming a central aperture adapted to receive the lancet assembly, the lancet holder including a groove formed thereon along the central aperture, the groove adapted to engage the ridge of the lancet assembly, the lancet holder adapted to move the lancet assembly between a resting position, a cocking position, and a puncture position.

5. The lancing device of claim 4, wherein the groove and ridge are adapted to reduce the frictional contact between the lancet holder and the lancet assembly.

6. The lancing device of claim 4, wherein the groove and ridge are adapted to increase the frictional contact between the lancet holder and the lancet assembly.

7. A lancing device comprising:

a main housing enclosing a portion of a lancing mechanism, the main housing having an endcap support located on a testing end of the main housing, the lancing mechanism including a lancet holder forming a central aperture adapted to receive a lancet assembly having a groove located thereon, the lancet holder being attached to a shaft with a drive spring surrounding a portion of the shaft, the drive spring being located between the lancet holder and a portion of the main housing opposite the testing end, the lancet holder including a ridge extending into the central aperture, the lancing mechanism being adapted to move between a resting position, a cocking position, and a puncture position; and

a movable housing adjacent the main housing, the movable housing being adapted to move between a resting position and a cocking position, the moveable housing having an internal surface enclosing a portion of the shaft of the lancing mechanism,

wherein the ridge of the lancet holder extends into the central aperture and engages the groove of the lancet assembly.

8. The lancing device of claim 7, wherein the only engagement between the lancet assembly and the lancet holder is the engagement between the ridge and the groove.

9. The lancing device of claim 7, wherein the lancet assembly is released from the lancet holder by disengaging the ridge of the lancet holder from the groove of the lancet assembly.

10. The lancing device of claim 7, wherein the ridge extending into the central aperture of the lancet holder is a triangular ridge.