Medical device and locking mechanism therefor

Details Medical device and locking mechanism therefor Medical device and locking mechanism therefor

A - Human Necessities

61

M

A61M 5/50 (2006.01) A61M 5/32 (2006.01) A61M 5/34 (2006.01) A61M 5/315 (2006.01) A61M 25/06 (2006.01)

Patent

CA 2432547

A locking mechanism (10) for a medical sharp device such as a syringe assembly (62) includes a retainer part (12) for retaining a hypodermic needle (22), and a connector part (14). The retainer part includes lugs (46) for engagement with a recess (82) formed in a neck (70) of the syringe assembly. When a plunger (72) of the syringe assembly is pushed fully forwards, the lugs (56) of the retainer part (12) engage behind a ledge (54) of the connector part (14) and the lugs (46) disengage from the recess (82). The plunger (72) may then be retracted, pulling the needle (22) into the barrel (64) of the assembly. The neck portion may be eccentrically mounted on the barrel and means (116, 118) may be provided for preventing rotation of the plunger (72) in the barrel (64).

Mécanisme de blocage (10) pour un dispositif médical pointu tel qu'un ensemble seringue (62), qui comporte une partie de retenue (12) destinée à retenir une aiguille hypodermique (22) et une partie de couplage (14). La partie de retenue comporte des ergots (46) destinés à s'emboîter dans un évidement (82) ménagé dans un col (70) de l'ensemble seringue. Lorsque le piston (72) de l'ensemble seringue est poussé complètement vers l'avant, les ergots (56) de la partie de retenue (12) s'emboîtent derrière un rebord (54) de la partie de couplage (14) et les ergots (46) se déboîtent de l'évidement (82). Le piston (72) peut ensuite être rétracté, ce qui tire l'aiguille (22) dans le cylindre (64) de l'ensemble. La partie col peut être montée de manière excentrique sur le cylindre et ledit ensemble seringue peut comporter des moyens (116, 118) destinés à empêcher la rotation du piston (72) dans le cylindre (64).

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