Surgical stapling instrument

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/068 (2006.01) A61B 17/11 (2006.01)

Patent

CA 2425622

A surgical stapling instrument for performing a vascular anastomosis procedure comprises an elongated body (10) and a needle (12) having a hook (12b) for penetrating and everting the edges (56, 58) of tissue to be joined. The needle (12) is slidable in the body (10) between an extended position as shown and a retracted position wherein the hook is engaged with the end (10a) of the body. A stapling mechanism includes a slidable pusher (40) for driving a staple (36) longitudinally of the body (10) against the inside of the hook (12b) for deformation of the staple into penetrating engagement with the everted tissue edges (56, 58).

Instrument d'agrafage chirurgical servant à exécuter une anastomose vasculaire et composé d'un corps allongé (10) et d'une aiguille (12) possédant un crochet (12) servant à pénétrer et à évaser les bords (56, 58) du tissu à réunir. L'aiguille (12) peut coulisser dans le corps (10) entre une position d'extension et une position de rétraction dans laquelle le crochet est accouplé à l'extrémité (10a) du corps. Un mécanisme d'agrafage comprend un poussoir coulissant (40) servant à conduire une agrafe (36) dans le sens de la longueur du corps (10) contre l'intérieur du crochet (12b), de manière à déformer l'agrafe afin qu'elle pénètre et s'accroche dans les bords (56, 58) du tissu évasé.

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