Modular hip joint prosthesis with adjustable anteversion
November 3, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References Re32488 3067740 Artificial head assembly for an articulated joint between two bones Combination including femoral rasp and calcar facing reamer Joint prosthesis Rasp tool Femoral component for hip prosthesis Ball and socket bearing for artificial joint Unit for resection prosthesis Total hip prosthesis with primary fixation InventorsAssigneeApplicationNo. 431412 filed on 11/03/1989US Classes:623/22.44, Bore in neck area of joint head623/22.46Including protruding means projects into a bore in femoral stem or neckExaminersPrimary: Isabella, David J.Attorney, Agent or FirmForeign Patent References
International ClassA61F 002/32AbstractThe present invention provides a modular hip prosthesis, and instrumentation for implanting the same, which has provision for varying the angulation between the stem portion and the trochanteral module portion by provision of connection means between the neck and stem which can be positioned or attached together in a variety of rotational positions. Variation of the angulation or anteversion is made possible in accordance with the present invention by virtue of the fact that the axis of the connection portion of the stem and neck is angularly offset from the axis of the body of the stem and neck, respectively. A further aspect of this invention is the provision of instrumentation for formation of a cavity for implantation of a prosthesis of this invention which is provided with indication means for indicating to the surgeon the optimum angle for assembly of the prosthesis of invention for implantation into a particular proximal femur. | |
