Lancet device with first-drop removal

• US 9,743,876 B2
• Filed: 07/09/2015
• Issued: 08/29/2017
• Est. Priority Date: 07/18/2014
• Status: Active Grant

• Current Assignee: Becton, Dickinson & Co
• Original Assignee: Becton, Dickinson & Co
• Inventors: Gelfand, Craig A., Fletcher, Gary D.
• Primary Examiner(s): LOUIS, RICHARD G
• Application Number:
  US14/795,231
• Publication Number:
  US 20160015305A1
• Time in Patent Office: 782 Days
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150061 Means for enhancing collection
• 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 5/15045 comprising means for capillary action
• 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 5/15109 Fully automatically triggered, i.e. the triggering does not require a deliberate action by the user, e.g. by contact with the patient's skin
• 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 5/15144 comprising driving means, e.g. a spring, for retracting the piercing unit into the housing

Abstract

A medical puncturing device having a wicking element disposed on a portion of the medical puncturing device is disclosed. The wicking element allows a user to remove a first drop of blood upon puncturing the skin using the medical puncturing device. In this manner, a subsequent drop of blood can be used to test their blood to determine their blood glucose level for proper insulin dosing.

Claims

1. A lancet device comprising:

a housing comprising a forward end and a rearward end;

a lancet structure comprising a puncturing element, the lancet structure at least partially disposed within the housing and adapted for movement between a pre-actuated position wherein the puncturing element is retained within the housing and a puncturing position wherein at least a portion of the puncturing element extends through the forward end of the housing;

a wicking element disposed on a portion of the lancet device; and

a protective cover removably covering the puncturing element of the lancet structure, the protective cover includes a post portion and the wicking element is disposed on a portion of the post portion of the protective cover.

2. A lancet device comprising:

a housing comprising a forward end and a rearward end;

a lancet structure comprising a puncturing element, the lancet structure at least partially disposed within the housing and adapted for movement between a pre-actuated position wherein the puncturing element is retained within the housing and a puncturing position wherein at least a portion of the puncturing element extends through the forward end of the housing;

a wicking element fully disposed within the housing of the lancet device; and

an actuation means for moving the wicking element to a position wherein the wicking element is capable of contacting a portion of a skin surface punctured by the puncturing element of the lancet structure.

3. The lancet device of claim 2, wherein the puncturing element pierces a portion of the wicking element during transition from the pre-actuated position to the puncturing position.

4. A lancet device comprising:

a housing comprising a forward end and a rearward end;

a lancet structure comprising a puncturing element, the lancet structure at least partially disposed within the housing and adapted for movement between a pre-actuated position wherein the puncturing element is retained within the housing and a puncturing position wherein at least a portion of the puncturing element extends through the forward end of the housing;

a wicking element disposed on a portion of the lancet device; and

an actuation member at least partially disposed within the housing, the actuation member sized for movement within a portion of the housing,

wherein the actuation member comprises a shield extending through the forward end of the housing and movable with respect to the housing, the shield including a shield forward end and a shield rearward end, and

wherein the wicking element is disposed on a portion of the shield forward end.

5. The lancet device of claim 4, further comprising a drive spring disposed between the rearward end of the housing and the lancet structure for biasing the lancet structure toward the puncturing position;

and

a retaining element disposed in interference engagement with the lancet structure and retaining the lancet structure in the pre-actuated position and adapted to retain the lancet structure against the bias of the drive spring,

wherein movement of the actuation member toward the retaining element releases the interference engagement between the retaining element and the lancet structure thereby permitting the drive spring to drive the lancet structure through the housing toward the puncturing position.

6. A lancet device comprising:

a housing comprising a forward end and a rearward end;

an actuation member at least partially disposed within the housing, the actuation member sized for movement within a portion of the housing, the actuation member including an actuation member forward end and an actuation member rearward end and defining a cavity between the actuation member forward end and the actuation member rearward end;

a wicking element disposed within a portion of the cavity of the actuation member; and

a lancet structure comprising a puncturing element, the lancet structure disposed at least partially within the housing and adapted for movement between a pre-actuated position wherein the puncturing element is retained within the housing and a puncturing position wherein at least a portion of the puncturing element extends through the forward end of the housing,

wherein the wicking element is adhesively secured to the actuation member.

7. The lancet device of claim 6, wherein the wicking element comprises a pressed paper material.

8. The lancet device of claim 6, wherein the wicking element comprises a plastic material.

9. The lancet device of claim 6, wherein the wicking element comprises a fiber material.

10. The lancet device of claim 6, further comprising a protective cover removably covering the puncturing element of the lancet structure.

11. The lancet device of claim 6, further comprising a drive spring disposed between the rearward end of the housing and the lancet structure for biasing the lancet structure toward the puncturing position;

and

a retaining element disposed in interference engagement with the lancet structure and retaining the lancet structure in the pre-actuated position and adapted to retain the lancet structure against the bias of the drive spring,

wherein movement of the actuation member toward the retaining element releases the interference engagement between the retaining element and the lancet structure thereby permitting the drive spring to drive the lancet structure through the housing toward the puncturing position.

12. The lancet device of claim 11, wherein the retaining element comprises a lever element pivotal about a fulcrum, the lever element providing interference engagement with the lancet structure and retaining the lancet structure in the pre-actuated position and adapted to retain the lancet structure against the bias of the drive spring, wherein movement of the actuation member toward the lever element causes a portion of the lever element to pivot about the fulcrum, thereby moving the lancet structure toward the rearward end of the housing to at least partially compress the drive spring and release the interference engagement between the lever element and the lancet structure, permitting the drive spring to drive the lancet structure through the housing toward the puncturing position.