Retrograde excision system and apparatus

Details Retrograde excision system and apparatus Retrograde excision system and apparatus

A - Human Necessities

61

B

A61B 17/3205 (2006.01) A61B 17/16 (2006.01)

Patent

CA 2667981

A method for excising a portion of an articular surface using a retrograde procedure. An access tunnel is provided extending through a bone and to the articular surface. A central shaft is inserted through the access tunnel to the articular surface and a cutter is coupled to the central shaft. The cutter is coupled to the central shaft to allow the cutter to rotate with the central and to allow the cutter to be tiltable relative to the central shaft. The cutter is rotated and a retrograde force is applied to the cutter to urge the cutter into the articular surface.

L'invention concerne un procédé pour exciser une partie d'une surface articulaire en utilisant une procédure rétrograde. Un tunnel d'accès est fourni, s'étendant à travers un os et jusqu'à la surface articulaire. Un arbre central est inséré à travers le tunnel d'accès vers la surface articulaire et un instrument tranchant est couplé à l'arbre central. L'instrument tranchant est couplé à l'arbre central pour permettre à l'instrument tranchant de tourner avec l'arbre central, et pour permettre à l'instrument tranchant d'être inclinable par rapport à l'arbre central. L'instrument tranchant est tourné, et une force rétrograde est appliquée au couteau pour pousser l'instrument tranchant dans la surface articulaire.

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