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Syringe having a hinged needle shield

一种针护套、注射器的技术，应用在单次使用注射器领域，能够解决危害等问题

Active Publication Date: 2010-03-31
BECTON DICKINSON & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, until the needle is shielded or disposed of properly, it is potentially hazardous to other personnel

Method used

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  • Syringe having a hinged needle shield
  • Syringe having a hinged needle shield
  • Syringe having a hinged needle shield

Examples

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Embodiment Construction

[0034]While the invention is capable of being embodied in many different forms, there are shown in the drawings and here will be described preferred embodiments of the invention in detail, it being understood that the disclosure is to be considered as exemplary of the principles and is not intended to be construed as The invention is limited to the illustrated embodiments. The scope of the invention is to be determined by the appended claims and their equivalents.

[0035] refer to Figure 1-11 , the syringe assembly 20 of the present invention includes a syringe barrel 21 having an elongate body 22, an outer surface 27, an open proximal end 28, and a distal end 29, the elongate body 22 defining a reservoir for holding a fluid 25. The distal end 29 of the chamber 23 includes a tip 31 having a passage therethrough in fluid communication with the chamber. The distal end of the barrel preferably includes a barrel collar 33 concentrically surrounding the tip.

[0036] Needle as...

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PUM

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Abstract

A syringe assembly (20) includes a syringe barrel (21) having an elongate body (22), a tip (31) on its distal end surrounded by a barrel collar (33). A needle assembly includes a needle cannula (38) attached to a hub (43) hav ing a cavity in its open proximal end. The hub is attached to the barrel wit h the barrel tip in the hub cavity. A plunger (49) having a stopper (55) pos itioned in fluid tight engagement on the inside (23) of the barrel. A collar (58) is rotatably connected to the outside surface of the barrel collar. An elongate needle shield (57) is hingedly connected to the collar. The needle shield includes two side walls (61,62) defining a longitudinal opening (63) and a recess (65). A needle shield is capable of pivoting about the collar from an open position (Fig 3) to a closed position (Fig 11) wherein the dist al end of the needle cannula is in the recess of the needle shield. Structur e (69) is provided to lock the needle shield to the collar and to trap the n eedle cannula in the needle shield when the needle shield is in the closed p osition. Structure (74,79) is provided to prevent over- rotation of the need le shield past the needle protecting position and to guide a needle cannula into the recess of the needle shield. An over-center hinge (80) facilitates moving the needle shield to the closed position.

Description

technical field [0001] The present invention relates generally to single use syringes having safety features, and more particularly, the present invention relates to a syringe having an articulating needle assembly and an articulating needle shield assembly for the syringe. Background technique [0002] Accidental needle sticks from new, unused needles can cause injury and render the needle unsuitable for further use. Accidental sticks from used needles can transmit disease. Thus, most prior art needle assemblies have a needle shield. Some prior art needle shields define a rigid sleeve that is manually retractable over the needle cannula. This procedure requires the healthcare worker to hold the syringe barrel with one hand and the sheath with the other. Some medical procedures require that pressure be applied to the puncture site after the needle has been withdrawn. Thus, healthcare workers often cannot shield the needle cannula with two hands. In these cases, staff ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/32
CPCA61M5/3202A61M5/3216A61M2005/3217
Inventor 林健兴C·E·加德纳
Owner BECTON DICKINSON & CO
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