Needle safety device

Patent metadata

Field	Value
Publication number	US-9278180-B2
Application number	US-27557008-A
Country	US
Kind code	B2
Filing date	Nov 21, 2008
Priority date	Nov 21, 2007
Publication date	Mar 8, 2016
Grant date	Mar 8, 2016

Abstract

A needle guard having a housing defining an interior cavity, and a transitional member disposed within the interior cavity is disclosed. The transitional member includes a pivoting arm having a first end and a second end, the first end adjacent an interior portion of the housing. The transitional member also includes a needle tip sensing element, and a transverse barrier, such that the needle tip sensing element and the transverse barrier are oriented on opposing sides of the pivoting arm adjacent the second end. The needle guard may be adapted for transition from a restrained position when the needle tip is exterior to the interior cavity, to an activated position when the needle tip is within the interior cavity. The transitional member may also have a needle tip sensing element for contacting a needle in the restrained position, and a binding edge for engaging the needle in the activated position.

First claim

What is claimed is:

1. A needle guard, comprising:
a housing defining an interior cavity; and
a transitional member disposed within the interior cavity, the transitional member comprising:
a pivoting arm having a first end and a second end, the first end adjacent an interior portion of the housing,
a needle tip sensing element connected to the pivoting arm, and
a transverse barrier, wherein the needle tip sensing element extends radially outward from and substantially perpendicular to a first side of the pivoting arm adjacent the second end and the transverse barrier extends radially outward from and substantially perpendicular to a second side of the pivoting arm adjacent the second end in a direction opposite from a direction in which the needle tip sensing element extends, the first side opposite the second side.

2. The needle guard of claim 1 , wherein the transitional member further comprises a spring arm connected to the pivoting arm at a compressible pivot point.

3. The needle guard of claim 1 , wherein the pivoting arm further comprises a binding edge.

4. The needle guard of claim 1 , wherein the interior cavity of the housing includes a longitudinal axis, and the transitional member is transitionable from a restrained position when the needle tip sensing element is disposed on a first side of the longitudinal axis, to an activated position when the needle tip sensing element is disposed on a second side of the longitudinal axis opposing the first side.

5. The needle guard of claim 4 , wherein the pivoting arm further comprises a binding edge, such that transition of the transitional member from the restrained position to the activated position articulates the binding edge at least partially across the longitudinal axis.

6. The needle guard of claim 1 , wherein the needle tip sensing element further comprises a guide rail.

7. The needle guard of claim 1 , wherein the transverse barrier further comprises an angled restraining tab.

8. A device, comprising:
a needle having a needle tip;
a housing disposed about a portion of the needle, defining an interior cavity structured to receive the needle therethrough along a longitudinal axis of the interior cavity of the housing; and
a transitional member disposed within the interior cavity, adapted for transition from a restrained position when the needle tip is disposed exterior to the interior cavity to an activated position when the needle tip is housed within the, interior cavity, the transitional member comprising:
a pivoting arm having a first end and a second end, the pivoting arm disposable at least partially adjacent an interior portion of the housing,
a needle tip sensing element biased against at least a portion of the needle in the restrained position, and
a transverse barrier, wherein the needle tip sensing element extends radially outward from and substantially perpendicular to a first side of the pivoting arm adjacent the second end and the transverse barrier extends radially outward from and substantially perpendicular to a second side of the pivoting arm adjacent the second end in a direction opposite from a direction in which the needle tip sensing element extends, the first side opposite the second side, wherein the transitional member is disposed entirely on one side of the longitudinal axis of the interior cavity of the housing in the restrained position.

9. The device of claim 8 , wherein the pivoting arm has a first end and a second end, the first end adjacent the interior portion of the housing.

10. The device of claim 8 , wherein the transitional member further comprises a spring arm connected to the pivoting arm.

11. The device of claim 8 , wherein the pivoting arm further comprises a binding edge for contacting at least a portion of the needle in the activated position to limit the advancement of the needle tip from the housing in a distal direction.

12. The device of claim 11 , wherein the binding edge at least partially deforms a portion of the needle in the activated position.

13. The device of claim 11 , wherein the binding edge restrains at least a portion of the needle against an interior portion of the housing in the activated position.

14. The device of claim 8 , wherein the interior cavity of the housing has a longitudinal axis and the transitional member is transitionable from a restrained position when the needle tip sensing element is disposed on a first side of the longitudinal axis to an activated position when the needle tip sensing element is disposed on a second side of the longitudinal axis opposing the first side.

15. The device of claim 14 , wherein the transverse barrier of the transitional member is disposed on the first side of the longitudinal axis in the restrained position, and is disposed across the longitudinal axis in the activated position to limit advancement of the needle tip from the housing in a proximal direction.

16. The device of claim 14 , wherein the pivoting arm further comprises a binding edge, such that transition of the transitional member from the restrained position to the activated position articulates the binding edge at least partially across the longitudinal axis.

17. A device, comprising:
a needle having a needle tip;
a housing disposed about a portion of the needle, defining an interior cavity structured to receive the needle therethrough along a longitudinal axis of the interior cavity of the housing; and
a transitional member adapted for transition from a restrained position to an activated position and disposed entirely on one side of the longitudinal axis of the interior cavity of the housing in the restrained position, the transitional member comprising:
a pivoting arm having a needle tip sensing element continuously biased against the needle in the restrained position, and a binding edge for engaging the needle in the activated position, wherein transition of the transitional member from the restrained position to the activated position is initiated when contact between the needle tip sensing element and the needle is interrupted, and wherein the transitional member moves across the longitudinal axis of the interior cavity of the housing in a substantially downward direction relative to the housing during transition of the transitional member from the restrained position to the activated position.

18. The device of claim 17 , wherein the pivoting arm has a first end adjacent an interior portion of the housing and a second end, and the needle tip sensing element and a transverse barrier oriented on opposing sides of the pivoting arm adjacent the second end.

19. The device of claim 18 , wherein the interior cavity of the housing has a longitudinal axis and the transitional member is transitionable from a restrained position when the needle tip sensing element is disposed on a first side of the longitudinal axis to an activated position when the needle tip sensing element is disposed on a second side of the longitudinal axis opposing the first side.

20. The device of claim 19 , wherein the transverse barrier of the transitional member is disposed on the first side of the longitudinal axis in the restrained position, and is disposed on the second side of the longitudinal axis in the activated position to limit advancement of the needle tip from the housing in a proximal direction.

21. The device of claim 17 , wherein the binding edge limits the advancement of the needle tip from the housing in the distal direction in the activated position.

22

Assignees

• Wong Andrew
• Becton Dickinson Co

Inventors

• Wong Andrew

Classifications

• A61M2005/3247

  Means to impede repositioning of protection sleeve from needle covering to needle uncovering position · CPC title

• A61B17/3401

  Puncturing needles for the peridural or subarachnoid space or the plexus, e.g. for anaesthesia · CPC title

• A61M5/3273 Primary

  freely sliding on needle shaft without connection to syringe or needle · CPC title

• A61M2005/325

  Means obstructing the needle passage at distal end of a needle protection sleeve · CPC title

• A61B2090/0801

  Prevention of accidental cutting or pricking · CPC title