Surgical fastener applying apparatus

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/072 (2006.01) A61B 17/068 (2006.01)

Patent

CA 2664942

A surgical fastener applying apparatus, comprises cartridge and anvil half- sections relatively movable from unclamped to fully clamped positions. A replaceable staple cartridge assembly is receivable in said cartridge half-section. The cartridge assembly includes a plurality of staples abutting a plurality of staple pusher members and a safety lock-out pivotable between an initial position permitting relative movement of said cartridge and anvil half-sections to said clamped position and a blocking position preventing relative movement of said cartridge and anvil half-sections from returning to said clamped position after said staples have been at least partially fired. A pair of camming surface extensions extend from a cam bar and are within said cartridge half-section. A pivotably mounted firing lever is associated with said camming surface extensions to move said camming surface extensions longitudinally to sequentially fire the staples in a direction transverse to a direction of travel of the camming surface extensions.

Une agrafeuse chirurgicale comprend une demi-section de cartouche et une demi-section d'enclume relativement mobiles à partir de la position de non agrafage à la position d'agrafage. Une cartouche à agrafes remplaçable est reçue dans ladite demi-section de la cartouche. La cartouche comprend de multiples agrafes contiguës à de multiples éléments de poussée d'agrafes. Un verrou de sécurité peut pivoter entre une position initiale qui permet le mouvement relatif desdites demi-sections de cartouche et d'enclume, jusqu'à la position verrouillée, et une position de blocage qui empêche le mouvement relatif desdites demi-sections cartouche et d'enclume, de revenir à ladite position verrouillée, après que les agrafes aient été au moins partiellement déclenchées. Une paire de prolongateurs à surfaces de verrouillage sortent d'une barre courbe et cette paire est située dans la demi-section de la cartouche. Un levier de déclenchement pivotant est associé aux prolongateurs à surfaces de verrouillage pour déplacer ces prolongateurs dans le sens longitudinal pour déclencher séquentiellement les agrafes dans le sens transversal au sens de déplacement des prolongateurs à surfaces de verrouillage.

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