Femoral stem surgical instrument system

The improvement in a femoral stem surgical instrument system for use in connection with manipulating, impacting and extracting a femoral stem during procedures involving the placement of the femoral stem relative to a femur, the femoral stem extending in an axial direction and including a proximal surface transverse to the longitudinal direction and making an acute angle with the longitudinal direction, and a recess extending in the axial direction from the proximal surface distally into the femoral stem, the femoral stem surgical instrument system including a handle component having a coupling projection for selective engagement with the recess to couple the handle component with the femoral stem for manipulation of the femoral stem in direct response to manipulation of the handle component, and an impact component having an impact pin for selective reception in the recess for selectively impacting the femoral stem, the improvement comprising:

• a first bore portion extending in an axial direction along the recess and having a first diameter, the first bore portion being spaced distally from the proximal surface and including a first coupling configuration therein;
• a second bore portion extending in an axial direction from the proximal surface toward the first bore portion and having a second diameter larger than the first diameter;
• a third bore portion extending in an axial direction between the first bore portion and the second bore portion and having a third diameter smaller then the second diameter and no smaller than the first diameter;
• and
• a transverse shoulder within the recess between the second bore portion and the third bore portion;
• the coupling projection including a second coupling configuration complementary to the first coupling configuration;
• the handle component including a coupling sleeve carried by the handle component for relative movement between the coupling sleeve and the coupling projection in axial directions, a coupling surface on the coupling sleeve, the coupling surface making an acute angle with the axial direction for matching the acute angle of the proximal surface so as to enable selective coupling of the coupling surface with the proximal surface, and locking means on the handle component for locking the coupling sleeve against axial movement relative to the proximal surface of the femoral stem when the first and second coupling configurations are coupled together and the coupling surface is in engagement with the proximal surface of the femoral stem;
• the impact pin having a diameter complementary to the diameter of the second bore portion, and an impact shoulder complementary to the transverse shoulder within the recess for engagement of the impact pin with the transverse shoulder upon engagement of the impact component with the femoral stem.