Syringe

A - Human Necessities – 61 – M

Patent

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Details

IPC codes

A61M 5/32 (2006.01)

Type

Patent

Patent number

CA 2574298

Description

The inventive syringe comprising a piston (16) movable in a housing (10) and a needle (20) retractable therein is characterised in that the piston (16) and the needle (20) are connected by a coupling (22; 22') which is provided with three states: a coupling lifting state in which the needle (20) is displaceable with the piston (16) towards the front end of the housing (10), a disengaged state in which the piston (16) is separated from the needle (20) and backwardly displaceable into the housing and a permanent coupling state, in which the needle (20) is retracted in the housing (10) by means of the piston (16).

Seringue présentant un piston (16) déplaçable dans un corps cylindrique (10), et une aiguille (20) rétractable dans ce corps, caractérisée en ce que le piston (16) et l'aiguille (20) sont reliés par un accouplement (22 ; 22') présentant trois états : un état d'accouplement avec possibilité de levage, dans lequel l'aiguille (20) est déplaçable avec le piston (16) vers l'extrémité avant du corps (10), un état désaccouplé, dans lequel le piston (16) séparé de l'aiguille (20) est déplaçable en retour dans le corps, et un état d'accouplement permanent, dans lequel l'aiguille (20) est rétractile dans le corps (10) au moyen du piston (16).

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