| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cutting means particularly adapted to assist in the removal of bone tissue on the proximal portion of a femoral head so that a prosthetic member fitted thereto to effect the repair of the bone for purposes of altering or replacing the femoral portion of the hip joint. <P>SOLUTION: The reamer 10a has a cutting head 30a and an axial guide assembly 70. The cutting head has a profile cutting form 24a. An apex connects to the cutting form 24a by a set of struts 94. The axial guide assembly has one end fixed to the apex (a) and at the other end has a bayonet mechanism connectable to a drive handle. Rim cutting teeth 36a are set into a rim to cut a cylindrical profile, and bevel cutting teeth 96 integral to the struts 94 cut a bevel onto the cylindrical form cut into the bone. A guide pin bore passes through the apex and the guide assembly 70 concentric with the axis of rotation 18 to receive a guide pin 14 to guide the reamer 10a in cutting alignment relative to the joint bone to be cut. <P>COPYRIGHT: (C)2009,JPO&INPIT |
