Suture anchor and approximating device

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/04 (2006.01) A61L 31/04 (2006.01) A61L 31/06 (2006.01) A61L 31/10 (2006.01)

Patent

CA 2477220

An elastically curved suture anchor is resiliently straightened and delivered into tissue by a needle. When the needle is withdrawn, resumption of the curvature provides leverage for anchor rotation as the attached suture is pulled to fasten the anchor within the tissue. A fin at the proximal end of the anchor further increases the rotational leverage and expedites anchor fastening. When two or more anchors with connecting suture are delivered in series on a needle, the tension of the suture helps to draw the anchors together and approximates the pierced tissue.

L'invention concerne un dispositif d'ancrage de suture incurvé, à mémoire de forme, pouvant être redressé de manière souple et introduit dans un tissu à l'aide d'une aiguille. Lorsque l'aiguille est retirée, le dispositif d'ancrage retrouve sa forme incurvée. Ce phénomène induit un effet de levier permettant de faire pivoter le dispositif d'ancrage au fur et à mesure que le fil de suture est tiré en arrière et de fixer le dispositif d'ancrage dans le tissu. Par ailleurs, une ailette située à l'extrémité proximale du dispositif d'ancrage permet d'augmenter davantage l'effet de levier et d'accélérer ainsi la fixation du dispositif d'ancrage. Lorsqu'au moins deux dispositifs d'ancrages avec un fil de suture unique sont montés en série sur une aiguille, la tension du fil de suture permet de rapprocher les dispositifs d'ancrages et de resserrer le tissu percé.

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