Kit for reconditioning femur and ilium bones in preparation for installation of a joint implant

摘要

A hip implant assembly including a ball and stem. An annular rim separates the ball from the stem and abuts over an exterior reconditioned surface of the femur upon inserting the stem within an interior femur passageway. A cup shaped support seats the ball in articulating fashion via a ligament which extends from the ball and is received within a recess passageway of the cup. The cup includes a mounting surface with a central projecting portion which in turn resistively fits within an undercut recess formed in the ilium bone in communication with a base surface of the reconditioned acetabulum socket. An installation kit assists the preparation of the femur and ilium bones, as well as the installation of the implant body into the conditioned femur end and the cup outer socket support to a reconditioned acetabulum defined in the ilium bone.

主权项

1. A kit for preparation of femur and ilium bones defining a hip joint and for installation of an implant body into an upper reconditioned femur end, as well as a cup shaped support to a reconditioned acetabulum defined in the ilium bone, said kit comprising:
a saw for removing a damaged bulbous shaped head associated with the femur and in order to reveal a generally annular shaped receiving face which communicates an interior extending passageway; a hand held grinder exhibiting a forward-most located hemispherical shaped and rotatably driven grinder bit, a plurality of individual incising blade portions being arranged in circumferentially spaced and longitudinally extending fashion along said hemispherical shaped bit for reshaping the acetabulum socket to match a mounting surface associated with the outer socket support; said hand held grinder further having a central bit projecting from a forward most location of said hemispherical shaped bit at which said longitudinal blade portions converge, said central bit creating a hole in a base of the acetabulum, a pair of undercut machining blades being configured to incrementally actuate outwardly from said central bit for creating a successive undercut configuration within the hole formed in the reground acetabulum, and which is subsequently engaged by a projection associated with the cup; a drill template adapted to being mounted to the ilium bone and overlaying the reconditioned acetabulum, a plurality of apertures arranged in a desired pattern array within said template; and a drill insertable in succession into through each of said apertures defined in said template in order to create a pattern of drill holes in the acetabulum in alignment with additional holes established in said cup for receiving a plurality of fasteners.