Ligating clip with integral interlocking latch mechanism

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/04 (2006.01)

Patent

CA 2554287

A polymeric, surgical clip (12) having first and second curved legs (22, 24) joined at their proximal ends by a flexible hinge (26) section and movable from an open position to a closed position for clamping a vessel between curved opposing inner surfaces. The first leg terminates at its distal end in a female locking member comprising a resilient inwardly turned hook having a recess in the mouth of the hook (41), and the second leg member terminates in a male locking member complimentary to the female locking member and comprising a detent such that when the first and second leg members are moved from an open position to a closed position about the hinge section the hook member will deflect about the distal end of the second leg member thereby engulfing the male locking member in the mouth of the hook and matingly engaging the detent in the recess thereof, thus securely locking the clip in the closed position. The locking feature provides greater closure security to the clip when clamping large diameter or uncompressible tissue.

L'invention concerne une agrafe chirurgicale, polymère, possédant des première et seconde jambes incurvées jointes au niveau de leurs extrémités proximales par une section charnière flexible, et mobile d'une position ouverte en une position fermée pour clamper un vaisseau entre des surfaces intérieures opposées. La première jambe se termine au niveau de son extrémité distale par un élément de verrouillage femelle comprenant un crochet souple tourné vers l'intérieur et possédant un retrait situé dans la bouche du crochet, et la seconde jambe se termine par un élément de verrouillage mâle complémentaire de l'élément de verrouillage femelle et comprenant un cran tel que lorsque les première et seconde jambes sont déplacées d'une position ouverte en une position fermée autour de la section charnière, l'élément crochet se plie autour de l'extrémité distale de la seconde jambe, insérant ainsi l'élément de verrouillage mâle dans la bouche du crochet et s'engageant par accouplement avec le cran située dans le retrait du crochet, ce qui permet de verrouiller de façon sûre l'agrafe dans la position fermée. Cette caractéristique de verrouillage permet une sécurité de fermeture accrue de l'agrafe lors du clampage d'un tissu de grand diamètre ou incompressible.

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