Patent ID: 7815643

Claim:
A tool for creating a cavity in a bone comprising: an elongated body having a distal end and having a proximal end, said body having an exterior diameter defining a tool body area for the tool; a shearing element anchored to said distal end of said body by an anchor element; said anchor element and said distal end of said body together forming a hinge to permit and to restrict said shearing element to move substantially only in a transverse plane relative to said body; whereby the motion of said shearing element in said transverse plane sweeps out a cutting arc, said cutting arc defining an area larger than a delivery area; an actuator located within said body and connected to said shearing element; and a handle attached to said actuator and having a portion extending exteriorly of the proximal end of said body for manual manipulation of said actuator, wherein said handle is indexed relative to said shearing element so as to position said shearing element within said bone to a desired orientation by the position of the handle; whereby motion imparted to said actuator rod moves said shearing element through said cutting arc.