Cocking mechanism for lancing device

• US 8,029,526 B2
• Filed: 08/14/2008
• Issued: 10/04/2011
• Est. Priority Date: 08/14/2008
• Status: Expired due to Fees

• Current Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Inventors: Lathrop, Ray Adams, Curry, Samuel Mason
• Primary Examiner(s): Hughes; S. Thomas
• Assistant Examiner(s): MILES, JONATHAN WADE
• Application Number:
  US12/191,879
• Publication Number:
  US 20100042131A1
• Time in Patent Office: 1,146 Days
• Field of Search: 606/181, 606/182, 606/183, 604/136, 604/137, 604/138, 604/139, 600/573, 600/583, 227/19
• 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. A lancing device comprising:

a lancet;

a housing defining a piercing aperture;

a lancet holder configured to receive the lancet through the piercing aperture and mounted for axial movement in the housing between a retracted position, an extended position, and a cocked position;

an arm extending radially from the lancet holder;

a lancet storage compartment defined with walls within the housing and configured to store a plurality of lancets;

a door configured to move between an open position allowing access to the lancet storage compartment and a closed position preventing access to the lancet storage compartment;

a cocking mechanism having a rack carried by the door and a pinion mounted on the housing and configured to move the lancet holder from its retracted position to its cocked position when the door is moved from the open position to the closed position such that the pinion engages the arm of the lancet holder;

a trigger mounted on the housing and configured to release the lancet holder to move from the cocked position to the extended position; and

a knob extending through a rear end of the housing and configured to move the arm out of contact with the pinion.

2. The lancing device according to claim 1 wherein the lancet holder is operative in response to movement of the door from its open position to its closed position.

3. The lancing device according to claim 1 wherein the door is mounted for pivotal movement on the housing between the open and closed positions.

4. The lancing device according to claim 3, wherein the door is configured to rotatably open about a pivot axis on one end of the door proximate an end of the housing opposite the piercing aperture.

5. The lancing device according to claim 1, wherein the lancet storage compartment is a drawer and the door is a drawer face, wherein the drawer slidably opens when the drawer face is opened and the drawer slidably closes when the drawer face is closed.

6. A method of using a lancing device comprised of a housing having a lancet holder disposed therein and configured to receive a lancet through a piercing aperture in the housing, the lancet holder mounted for axial movement in the housing between a retracted position, an extended position, and a cocked position, the housing having a storage compartment defined by walls within the housing to accommodate a plurality of lancets, the method comprising:

opening a door of the storage compartment to remove or deposit one or more of the plurality of lancets;

cocking the lancing device, the cocking comprising;

closing the door of the storage compartment to move a pinion mounted on the housing with a rack carried by the door, wherein closing the door of the storage compartment moves the lancet holder from a neutral position to a cocked position by moving the pinion to engage an arm extending radially from the lancet holder; and

rotating a knob extending through a rear end of the housing to move the arm out of contact with the pinion to allow for access to the storage compartment.

7. The method of claim 6, wherein the door is configured to pivot between the open and closed positions.

8. The method of claim 7, wherein the door is configured to pivot about an axis on one edge of the door proximate a rear end wall of the housing.

9. The method of claim 6, wherein the lancet storage compartment is a drawer and the door is the drawer face.