Femoral head prosthesis disassembly clamp

Abstract

This invention belongs to the field of disassembly jigs for artificial hip joint components. It discloses a femoral head prosthesis disassembly jig, including a hollow handle and a slidable slide rod inside the handle. The slide rod passes through the handle and has a first locking element and a first locking slot on the first locking element. The handle has a second locking element and a second locking slot on the second locking element. The first locking slot is located between the second locking slot and the slide rod and is directly opposite the second locking slot along the axial direction of the slide rod. The handle has a wrench, which is hinged to the handle and forms a first hinge fulcrum. A connecting rod is hinged to the wrench, and the connecting rod and the wrench form a second hinge fulcrum located between the middle of the wrench and the first hinge fulcrum. The connecting rod passes through the handle and is hinged to the slide rod. This solution can ensure that the pulling force is consistent with the direction of the neck axis of the femoral stem during use and amplify the pulling force on the jig to reduce physical exertion and reduce the difficulty of removal. At the same time, it avoids the operator pulling the jig outward and eliminates operational safety hazards.

Images