Patent ID: 6755365
Filing Date: 2004-06-29
Classification: A61F,B02C

Abstract:
A bone grinding apparatus, comprisinga grinding chamber; primary and secondary cutting elements positioned within the grinding chamber to sequentially perform primary and secondary cutting operations on the bone; a drive mechanism operatively engaging the primary and secondary cutting elements; wherein the secondary cutting element comprises: a first cutting tool including a first set of teeth; a second cutting tool including a second set of teeth; and the first and second cutting tools are positioned to define a cutting zone between the first set of teeth and the second set of teeth; and wherein the first cutting tool and second cutting tool are positioned in an opposed relationship within the grinding chamber and wherein the drive mechanism is adapted to move the first set of teeth in a first direction through the cutting zone and to move the second set of teeth in an opposite direction through the cutting zone, whereby concurrent movement of the first set of teeth and the second set of teeth will apply shear forces to the bone located in the cutting zone.