Patent ID: 8491587
Filing Date: 2013-07-23
Classification: A61B,A61F

Abstract:
1. A joint prosthesis instrument comprising: an intramedullary reference; a plate adapted to attach to a bone; a rotatable bushing having a top surface, a bottom surface, and an oblong hole extending between the top surface and the bottom surface, wherein the oblong hole has an elongated opening with elongated sides extending along the top surface, and wherein the rotatable bushing is adapted to rotate with respect to the plate; and a trigger flange slidably mounted in the bushing, the trigger flange having a first hole positioned along a length of the elongated opening of the oblong hole, the first hole being sized to allow the intramedullary reference to slide in the hole, wherein by rotating the bushing and sliding the trigger flange the first hole in the trigger flange can be located in a position that can receive the intramedullary reference, thereby measuring the angular orientation and linear distance of the intramedullary reference with respect to a fixed point on the plate.