Needle shield assembly having hinged needle shield

Inactive Publication Date: 2005-01-06
BECTON DICKINSON & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006] A needle shield assembly in accordance with the present invention includes a base assembly having a hub and a base member connected to the hub. A needle cannula having a proximal portion secured to the hub and a distal portion extending from the hub defining a longitudinal axis is provided. A coupling on the base assembly includes a channel transverse to the longitudinal axis of the needle cannula and having an opening therein. A projection on the base assembly has a distal end proximal to the channel and a top surface inclined outwardly with respect to the longitudinal axis in a distal direction. A needle shield having a cavity therein is connected to the coupling at the channel. The needle shield is capable of rotating from an open position wherein the needle cannula is exposed for use, to a closed needle protecting position wherein at least the distal portion of the needle cannula is in the cavity. The needle shield preferably includes a proximal end portion having a top surface wherein the top surface is able to contact the projection on the base assembly when the needle shield is rotated to the open position. The needle shield assembly may include a projection that is flexibly mounted to the base assembly and able to be contacted by the needle shield when the needle shield is in the open position. The needle shield assembly may include structure for locking the needle shield in the closed needle protecting position.
[0007] Another embodiment of the needle shield assembly of the present invention includes a base assembly having a hub, a base member connected to the hub and a coupling on the base member. A needle cannula having a proximal portion secured to the hub and a distal portion extending from the hub defining a longitudinal axis is provided. The coupling includes a channel transverse to the longitudinal axis of the needle cannula. A flexible projection is provided on the base assembly. The projection is positioned proximally with respect to the coupling. A needle shield having a cavity therein is hingedly connected to the base assembly at the channel. The needle shield is capable of rotating from an open po

Problems solved by technology

Accidental needle sticks from used hypodermic needles can transmit disease.

Method used

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  • Needle shield assembly having hinged needle shield
  • Needle shield assembly having hinged needle shield
  • Needle shield assembly having hinged needle shield

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Embodiment Construction

[0023] While this invention is satisfied by embodiments in many different forms, there are shown in the drawings and will be herein described in detail preferred embodiments of the invention with the understanding that the present disclosure is to be considered exemplary of the principles of the invention and is not intended to limit the scope of the invention to these embodiments illustrated. The scope of the invention will be measured by the appended claims and their equivalents.

[0024] Referring to FIG. 1, a needle shield assembly 20 includes a hub 22, a base member 23, a needle shield 26 and an elongate hollow needle cover 28. A needle cannula 30 is attached to the needle hub. As shown in FIGS. 6-8, the needle cannula 30 includes a proximal end 31 and a distal end 32. In this embodiment, the distal end of the needle cannula preferably includes a sharpened tip. Blunt cannula are, however, known to the art and are often used to inject liquid into the injection site of an IV set. T...

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PUM

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Abstract

A needle shield assembly including a hinged needle shield is provided. A ramp is provided in proximity to a hinge that connects the needle shield to base assembly. The ramp is preferably flexible, and, if compressed, resliently urges the needle shield to a preferred angular position where it is canted at an angle with respect to the syringe and a closed position in which it envelops the needle. One or more locking elements are preferably provided on the needle shield for maintaining it in a locked, needle protection position.

Description

[0001] This application claims the benefit of U.S. Provisional Application No. 60 / 292,680 filed May 22, 2001 and 60 / 355,907 filed Feb. 11, 2002.FIELD OF THE INVENTION [0002] The field of the invention relates to needle shield assemblies for medical devices such as hypodermic needles. BACKGROUND OF THE INVENTION [0003] Accidental needle sticks from used hypodermic needles can transmit disease. Various types of needle shields have been designed to reduce the possibility of accidental sticks. [0004] A needle shield that is hinged near the base of the needle has the advantage of allowing one handed needle reshielding. Accordingly, a number of prior art needle shield assemblies have been developed that include such needle shields. [0005] Various means have been provided for locking a hinged needle shield in the closed, needle protecting, position. Deflectable members have been provided in the needle shield for engaging the needle upon shielding and preventing subsequent unshielding of th...

Claims

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Application Information

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IPC IPC(8): A61L29/00A61M5/158A61M5/32G06Q30/02G06Q30/06H04W4/00
CPCA61M2005/3217A61M5/3216
InventorHWANG, CHARLES G.WILKINSON, BRADLEY M.NEWBY, C. MARK
OwnerBECTON DICKINSON & CO