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Needle shroud assembly

A technology of needle shields and components, applied in the direction of needles, instruments introduced into the body, etc.

Inactive Publication Date: 2011-12-07
OWEN MUMFORD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since, when two items are bolted together, the design of the latch inevitably entails a compromise between the suitability of bending rigidity, the stability required of the latch, and the extent of the common abutment surface, the integrally formed latch The use of has problems associated with

Method used

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  • Needle shroud assembly
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  • Needle shroud assembly

Examples

Experimental program
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Embodiment Construction

[0025] first reference Figures 1 to 3 , the first embodiment of the needle shield assembly 10 of the present invention is intended to fit into an injection device 12 designed to hold a syringe (not shown) and regulate a measured dose through the needle 14. The needle shield device 10 is designed for use in an extended position (e.g. figure 2 (shown in ) locks the retractable needle shield, in the extended position, covering the needle to prevent possible injury until the point where the user wishes to inject them.

[0026] Now specific reference figure 1 The needle shield assembly 10 comprises a barrel 16 of plastics material having an internal rib structure 18 at its rearward end to allow the barrel to be removably attached to the injection device by threading or tapping (pressing) action. In front of the rib structure 18 is an annular rib 20 and in front of the annular rib are two diametrically opposite guide grooves 22 . Telescopically housed within the barrel 16 is a ...

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PUM

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Abstract

A needle shroud assembly for a syringe holder comprises a barrel (16), a needle shroud (24) captively telescoped relative to the forward end of the barrel (16) and retained by a top outer body (44). A locking ring (42) cooperates with the shroud, having diametrically opposed keyways which are brought into and out of axial alignment with keys (38) on the shroud (24) to free or lock the shroud from movement. The locking collar (42) is biased towards a 'safe' position. On cocking the locking ring (42) to a 'live' position the shroud (24) is freed for retraction movement but on return to its extended position, the locking ring is returned to its 'safe' position.

Description

technical field [0001] The invention relates to a needle shield assembly and an injection device incorporating the assembly. Background technique [0002] Medical syringes are typically placed in a pen-shaped launcher or barrel-shaped holder. More complex devices have triggers that, when actuated, can automatically control the dose. The barrel-shaped holder allows easy handling of the syringe, however, after the syringe is mounted, at least for dose control, the needle of the syringe must protrude from the front end. At other times, it is highly desirable that the needle of the syringe can be shielded to prevent needlestick injuries. Additionally, it is desirable that the needle be concealed in the event the patient faints. [0003] It is known to provide a needle shield assembly in which an integrally formed spring latch is mounted on either the barrel or the shield and is opened by squeezing an externally accessible button, thereby releasing the shield, performing cont...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M5/32
Inventor 托比·柯维
Owner OWEN MUMFORD