Reducing instrument for spinal surgery

Details Reducing instrument for spinal surgery Reducing instrument for spinal surgery

A - Human Necessities

61

B

A61B 17/70 (2006.01) A61B 17/88 (2006.01)

Patent

CA 2593809

An instrument is provided for use in orthopedic surgery for reduction of a connecting member such as a spinal rod toward an implant such as a bone screw. An embodiment of the instrument includes handle portions that are pivotable relative to each other and biased apart, and arm portions pivotable relative to each other and to the handle portions. Distal portions of the arm portions, which are offset from the arm portions, provide structure for engaging a connecting member and an implant. Squeezing the handle portions force the distal portions of the arm portions together, forcing together the connecting member and the implant. A toothed bar and pawl may be provided to retain the instrument in a squeezed state.

L'invention concerne un instrument de chirurgie orthopédique pour la réduction d'un élément de connexion du type tige spinale vers un implant du type vis à os. Selon une variante, l'instrument comprend des poignées qui pivotent mutuellement et qui sont éloignées sous contrainte, et des bras qui pivotent mutuellement et par rapport aux poignées. Des parties distales des bras, décalées par rapport à ces bras, assurent une structure d'enclenchement entre l'élément de connexion et l'implant. En comprimant les poignées, on force les parties distales des bras à se rencontrer, et on force aussi l'élément de connexion et l'implant à se rencontrer. Une barre d'encliquetage dentée peut être prévue pour maintenir l'instrument à l'état comprimé.

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