Contact Activated Lancet Device

• US 20100305600A1
• Filed: 06/14/2010
• Published: 12/02/2010
• Est. Priority Date: 05/07/2004
• Status: Active Grant

• Current Assignee: Becton, Dickinson & Co
• Original Assignee: Becton, Dickinson & Co
• Inventors: Rutynowski, Wlodzinierz, Karbowniczek, Jacek Grzegorz, Wilkinson, Bradley
• Granted Patent: US 10,105,087 B2
• Time in Patent Office: Days
• US Class Current: 606/182
• CPC Class Codes: A61B 2017/00424 ergonomic, e.g. fitting in fist
• 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 5/150259 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 5/150549 Protectors removed by rotational movement, e.g. torsion or screwing
• CPC Class Codes: A61B 5/150618 Integrally moulded protectors, e.g. protectors simultaneously moulded together with a further component, e.g. a hub, of the piercing element
• CPC Class Codes: A61B 5/150717 manually removed
• CPC Class Codes: A61B 5/150824 by visual feedback
• CPC Class Codes: A61B 5/15111 Semi-automatically triggered, e.g. at the end of the cocking procedure, for instance by biasing the main drive spring or when reaching sufficient contact pressure, the piercing device is automatically triggered without any deliberate action by the user
• 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 5/15142 Devices intended for single use, i.e. disposable
• CPC Class Codes: A61B 5/15144 comprising driving means, e.g. a spring, for retracting the piercing unit into the housing

Abstract

A lancet device including a housing and a lancet structure having a puncturing element. The lancet structure disposed within the housing and adapted for movement between a retaining or pre-actuated position wherein the puncturing element is retained within the housing, and a puncturing position wherein the puncturing element extends through a forward end of the housing. The lancet device includes a drive spring disposed within the housing for biasing the lancet structure toward the puncturing position, and a retaining hub retaining the lancet structure in the retracted position against the bias of the drive spring. The retaining hub includes a pivotal lever in interference engagement with the lancet structure. An actuator within the housing pivots the lever, thereby moving the lancet structure toward the rearward end of the housing to at least partially compress the drive spring, and releasing the lever from interference engagement with the lancet structure.

Claims

1. A lancet device, comprising:

a housing defining at least one finger grip indentation;

a shield coaxially and movably associated with the housing; and

a removable sterile tab member associated with a puncturing element disposed in the housing,

wherein the shield is movably associated with the housing to move from a first position extending outward from the housing to a second position at least partially retracted into the housing, and wherein the at least one finger grip indentation comprises a concave surface shape facing substantially transversely away from an axis passing axially through the puncture element.

2. The lancet device of claim 1, wherein the concave surface shape is chosen from the group consisting of a semicircle, an ellipse, a hyperbola, and a parabola.

3. The lancet device of claim 1, comprising a second opposed finger grip indentation, and wherein a substantially horizontal longitudinal plane passing substantially centrally through the housing is approximately equidistant between the finger grip indentations.

4. The lancet device of claim 3, wherein the finger grip indentations are bilaterally symmetric about the horizontal longitudinal plane.

5. A lancet device comprising:

a housing;

a lancet structure comprising a puncturing element, the lancet structure 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 the puncturing element extends through a forward end of the housing;

a sterile tab member extending distally from the puncturing element and protecting the puncturing element prior to use;

a drive spring disposed within the housing for biasing the lancet structure toward the puncturing position; and

a shield extending through the forward end of the housing and axially movable with respect to the housing,

wherein the tab member is removably associated with the shield and engages a distal end of the housing to prevent movement of the shield relative to the housing that would cause the drive spring to bias the lancet structure to the puncturing position.

6. The lancet device of claim 5, wherein the tab member comprises a proximal portion associated with the puncturing element and a distal portion adapted to be grasped by a user of the lancet device, the proximal portion comprising a depending hollow skirt at least partially encompassing the shield and engaging the housing distal end to prevent movement of the shield.

7. The lancet device of claim 6, wherein the distal portion comprises a paddle-shaped member adapted to be grasped by a user of the lancet device.

8. The lancet device of claim 6, wherein the proximal portion is removably connected to the distal portion.

9. The lancet device of claim 6, wherein the skirt is adapted to fully enclose the shield therein, and wherein the shield is frictionally held within the skirt.

10. The lancet device of claim 6, wherein the housing and shield each define at least one peripheral indentation directed toward a discharge opening of the shield to facilitate aiming of the lancet device at an intended puncture site on the body of a human or animal.

11. A lancet device, comprising:

a housing defining at least one finger grip indentation;

a shield coaxially and movably associated with the housing; and

a second opposed finger grip indentation,

wherein the shield is movably associated with the housing to move from a first position extending outward from the housing to a second position at least partially retracted into the housing, and wherein the at least one finger grip indentation comprises a concave surface shape facing substantially transversely away from an axis passing axially through the puncture element and wherein a substantially horizontal longitudinal plane passing substantially centrally through the housing is approximately equidistant between the finger grip indentations.

12. A lancet device comprising:

a housing;

a lancet structure comprising a puncturing element, the lancet structure 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 the puncturing element extends through a forward end of the housing;

a sterile tab member extending distally from the puncturing element and protecting the puncturing element prior to use;

a biasing member disposed within the housing for biasing the lancet structure toward the puncturing position; and

a shield extending through the forward end of the housing,

wherein the tab member is removably associated with the shield and engages a distal end of the housing.

13. The lancet device of claim 12, wherein the tab member comprises a proximal portion associated with the puncturing element and a distal portion adapted to be grasped by a user of the lancet device, the proximal portion comprising a depending hollow skirt at least partially encompassing the shield and engaging the housing distal end and wherein the tab member prevents movement of the shield.

14. The lancet device of claim 13, wherein the proximal portion is removably connected to the distal portion.

15. The lancet device of claim 12, wherein the skirt is adapted to fully enclose the shield therein, and wherein the shield is frictionally held within the skirt.

16. The lancet device of claim 12, wherein the housing and shield each define at least one peripheral indentation directed toward a discharge opening of the shield to facilitate aiming of the lancet device at an intended puncture site on the body of a human or animal.