Patent ID: 7942879
Filing Date: 2011-05-17
Classification: A61B,A61F

Abstract:
1. A method for cutting a triangular cavity in bone comprising: providing a cutter which comprises a cutting surface having an outer diameter and a cutter bearing at one end of the cutting surface having an outer diameter larger than the outer diameter of the cutting surface; providing a frame having a shaft movable relative to the bone to be prepared which comprises a frame bearing which is complementary to the cutter bearing and which has an inner diameter which is larger than the outer diameter of the cutter's cutting surface and is configured to hold the bearing at a first acute angle relative to the shaft, the shaft having a width extending between the shaft and the bearing; journaling the cutter bearing in the frame by passing the cutter's cutting surface through the frame bearing and engaging the cutter bearing with the frame bearing; incising the patient adjacent the bone to be prepared to form an incision having a length approximating the width of the provided frame; providing a drive shaft portions of which being configured to couple to and drive the cutter with the drive shaft disposed at a second angle relative to the shaft which second angle is less than the first angle, cutting the cavity by driving the cutter with the drive shaft disposed at the second angle and moving the frame relative to the bone.