Bone impingement determination device for joint graft

A - Human Necessities – 61 – B

Patent

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A61B 17/17 (2006.01)

Patent

CA 2317501

A device for determining possible impingement of a replacement tissue graft with a portion of a bone at a joint, the replacement tissue graft of the type to be inserted and secured within a bone passage at the joint. The device includes (1) an elongated support shaft having a longitudinal axis and (2) a head disposed at a distal end of the support shaft. The head has (a) an engagement passage having an axis, the engagement passage configured to engage a guide wire disposed within the bone; and (b) an impingement surface corresponding to the shape of a portion of the replacement tissue graft, the impingement surface spaced from the axis of the groove by a pre-determined distance corresponding to a dimension of the tissue graft.

La présente invention concerne un dispositif permettant de mesurer l'empiétement éventuel d'une greffon tissulaire de remplacement sur une partie de l'os d'une articulation, le greffon tissulaire de remplacement étant du type devant être inséré et fixé à l'intérieur d'un passage dans l'os de l'articulation. Le dispositif de l'invention comprend (1) une tige de support allongée possédant un axe longitudinal et (2) une tête placée à l'extrémité distale de la tige de support. La tête présente (a) un passage de fixation possédant un axe, configuré pour recevoir un guide métallique placé à l'intérieur de l'os; et (b) une surface d'empiétement dont la forme correspond à celle d'une partie du greffon tissulaire de remplacement, laquelle surface d'empiétement est séparée de l'axe de la rainure par une distance prédéterminée correspondant à la dimension du greffon tissulaire.

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