COCKING MECHANISM FOR LANCING DEVICE

• US 20110319919A1
• Filed: 08/31/2011
• Published: 12/29/2011
• Est. Priority Date: 08/14/2008
• Status: Active Grant

• Current Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories)
• Original Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories)
• Inventors: Curry, Samuel Mason, Lathrop, Ray Adams
• Granted Patent: US 8,366,730 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 5/150305 Packages specially adapted for piercing devices or blood sampling devices kits for diabetes A61M5/003; packaging in general B65D
• 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 5/15113 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 5/15194 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

A lancing device is disclosed in which cocking of the lancet holder is achieved in response to retraction of a push member. A lancing device is also disclosed in which a lancet storage compartment is provided in the housing of the lancing device and closing movement of a closure member for the storage compartment has the effect of cocking the lancet holder. Methods of cocking lancing devices are also disclosed.

Claims

1-18. -18. (canceled)

19. A lancing device comprising:

an elongated housing having a rear end and a front end with a piercing aperture therein;

a lancet holder configured to receive a lancet and configured to move axially in the housing between a cocked position, an extended position, and a neutral position;

a cocking mechanism having a user actuated portion extending through the rear end of the housing and an internal portion movable by the user actuated portion, the internal portion having a projection configured to be received by a notch in the lancet holder,

wherein pressure on the user actuated portion moves the user actuated portion into the housing while moving the internal portion until the projection is received in the notch, and release of pressure from the user actuated portion moves the user actuated portion from within the housing while moving the lancet holder from the neutral position to the cocked position.

20. The lancing device of claim 19 further comprising a trigger mechanism having a button extending through a side of the housing directly connected to the internal portion of the cocking mechanism.

21. The lancing device of claim 19 further comprising a trigger mechanism, wherein the trigger mechanism has a button accessible to a user and is configured to move the lancet holder from the cocked position to the extended position by removing the projection from the notch.

22. The lancing device of claim 19, wherein the internal portion comprises a rod contacting the user actuated portion at one end and having a resilient member extending from an opposing end, the resilient member movably attached to a trigger mechanism.

23. The lancing device of claim 22, wherein the resilient portion is configured to bias the projection into the notch.

24. The lancing device of claim 22, wherein an end of the resilient member opposite the rod is slidable through a button of the trigger mechanism.

25. The lancing device of claim 22, wherein the trigger mechanism is operable to unseat the projection from the notch in response to inward movement of the trigger mechanism relative to the housing.

26. The lancing device of claim 19 further comprising:

a first spring configured to be compressed by the pressure on the user actuator portion moving the user actuated portion into the housing and configured to move the lancet holder into the cocked position as the first spring is uncompressed.

27. The lancing device of claim 26 further comprising:

a second spring configured to be compressed when the lancet holder is in the cocked position and configured to move the lancet holder from the extended to the neutral position as the second spring is uncompressed.

28. The lancing device of claim 27, wherein the second spring has one end contacting a projection from the lancet holder and another end contacting a projection from the housing.

29. A lancing device comprising:

a housing;

a lancet holder within the housing and configured to receive a lancet;

a cocking mechanism having a knob extending from a rear of the housing, the cocking mechanism configured to engage the lancet holder when the knob is pressed to a pressed position into the housing and to cock the lancet holder when the knob is released from the pressed position.

30. The lancing device of claim 29, wherein the cocking mechanism further comprises a first resilient arm extending from the knob to a trigger mechanism and a second resilient portion extending from the knob to the trigger mechanism, the second resilient arm including a projection configured to be received by the lancet holder.

31. The lancing device of claim 30, wherein the lancet holder is positioned between the projection and the trigger mechanism.

32. The lancing device of claim 29, wherein the cocking mechanism has a guide portion slidably engaging guide tracks on a trigger button.

33. The lancing device of claim 32, wherein the guide portion is configured to move within the guide tracks as the lancet holder is moved from a neutral position to a cocked position.

34. The lancing device of claim 32, wherein the guide portion is connected to the knob with a plurality of resilient arms.

35. The lancing device of claim 34, wherein one of the plurality of resilient arms has a projection configured to be received by a notch in the lancet holder.

36. The lancing device of claim 29 further comprising a cocking spring configured to be compressed when the knob is pressed and configured to be relaxed when the knob is released.

37. The lancing device of claim 36, wherein the first spring is positioned directly between the knob and a wall extending from the housing.

38. The lancing device of claim 29 further comprising a firing spring positioned directly between a projection on the lancet holder and a wall extending from the housing.