Safety penetrating instrument with penetrating member and...

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/34 (2006.01)

Patent

CA 2202744

A safety penetrating instrument (20) for penetrating an anatomical cavity wall (W) includes a penetrating member (38) having a distal end, a distally-biased safety member (26) having a distal end movable between an extended position protecting the distal end of the penetrating member (38) and a retracted position exposing the distal end of the penetrating member (38), an extending mechanism (48) for moving the safety member (26) to the extended position and for permitting the safety member (26) to move proximally toward the retracted position, a handle (24) for manually moving the safety member (26) to the retracted position, and a lock (64) for locking the safety member (26) in the retracted position during penetration of the wall. A trigger (82) is responsive to movement of the penetrating member (38) or the safety member (26) toward the retracted position to release the lock (64).

Un instrument de sécurité (20) pour traverser la paroi d'une cavité anatomique (W) comprend un élément pénétrant (38) ayant une extrémité distale, un élément de sécurité (26) poussé dans la direction distale ayant une extrémité distale capable de se déplacer entre une position avancée où elle protège l'extrémité distale de l'élément pénétrant (38) et une position reculée où l'extrémité distale de l'élément pénétrant (38) est à nu, ainsi qu'un mécanisme de déplacement (48) pour déplacer l'élément de sécurité (26) vers la position avancée et pour permettre à l'élément de sécurité (26) de se déplacer vers la position reculée, une poignée (24) pour déplacer manuellement l'élément de sécurité (26) vers la position reculée et un dispositif de verrouillage (64) pour verrouiller un élément de sécurité (26) dans la position reculée durant la pénétration à travers une paroi. Une gâchette (82) réagit au mouvement de l'élément pénétrant (38) ou de l'élément de sécurité (26) vers la position de retrait, pour libérer le dispositif de verrouillage (64).

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