Patent ID: 8277452

Claim:
A bone resection device for use in resection of bone during joint replacement surgery, the device comprising: a handle; an elongate shaft rotatably mounted to the handle, the shaft having a shaft axis, a proximal end and a distal end; a cutting tool housing attached to the shaft at or towards the distal end of the shaft; at least one cutting tool fastened to the cutting tool housing, the at least one cutting tool configured to be movable between a retracted position and an extended position; a pivot control member having a proximal end and a distal end, the pivot control member configured to be at least partially disposed about the elongate shaft, the pivot control member being attached at or toward the distal end to the at least one cutting tool, the distal end of the pivot control member and the distal end of the shaft being configured to be axially displaceable with respect to one another a predetermined distance, during operation of the device; and a cam follower, and wherein one of the pivot control member and the shaft comprises a cam surface configured to accept the cam follower, the cam surface extending about the shaft axis in a plane generally perpendicular to the shaft axis, wherein one of the cam surface and the cam follower is fixed relative to the handle, and the other of the cam surface and the cam follower is fixed relative to the pivot control member, and wherein the cam surface is non-planar and varies axially from a first point to a second point radially offset from the first point.