Safety system for a blood collection device

Details Safety system for a blood collection device Safety system for a blood collection device

A - Human Necessities

61

M

A61M 5/32 (2006.01) A61M 1/02 (2006.01) A61M 5/158 (2006.01) A61M 25/06 (2006.01)

Patent

CA 2532915

A system includes a needle (20) for aspirating fluid. A holder (12) supports the needle (20) and a guard is moveable to selectively cover the needle (20). Initially, a cantilevered tab (44) on the guard (16) is moved into a stressed configuration, and a distally directed force on the guard (16) presses the tab (44) into contact with an abutment on the holder (12). This prevents further distal movement of the guard (16). Subsequently, in response to a proximally directed force, the tab (44) is released from the abutment, it returns to a passive, unstressed configuration, and the guard (16) moves to expose the needle (20) for aspiration.

L'invention concerne un système à aiguille d'aspiration de fluide. Un support soutient l'aiguille et un dispositif de protection est mobile pour couvrir sélectivement l'aiguille. Initialement, une languette en porte à faux sur le dispositif de protection est déplacée en position contrainte, et une force d'orientation distale sur le dispositif de protection comprime la languette en contact avec une butée sur le support, empêchant tout mouvement distal supplémentaire du dispositif de protection. Ensuite, en réaction à une force d'orientation proximale, la languette est libérée de la butée, revenant à une position passive non contrainte, et le dispositif de protection se déplace pour exposer l'aiguille aux fins d'aspiration. Lorsque la force en question est supprimée, le dispositif de protection est contraint en position finale verrouillée, couvrant l'extrémité distale de l'aiguille et protégeant celle-ci.

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