Patent ID: 7837686
Filing Date: 2010-11-23
Classification: A61B

Abstract:
1. A surgical cutting tool for cutting a seating surface in natural bone, the seating surface having a contour configuration for receiving a component of a prosthetic implant having a complementary contour configuration, the cutting tool comprising: a cutting blade construct including a central axis of rotation and at least one cutting element having at least one cutting edge spaced from the central axis in a radial direction, the cutting edge having a profile configuration dimensioned and configured such that upon rotation of the cutting blade construct about the central axis of rotation, the cutting edge will follow a cutting envelope having a contour configuration for corresponding to the contour configuration of the seating surface; and an arbor coupled with the cutting blade construct for rotation about the central axis of rotation with the cutting blade construct, the arbor having an external surface; the cutting blade construct being placed within the arbor with the cutting edge juxtaposed in close proximity with and spaced radially away from the external surface of the arbor to expose the cutting edge for cutting the contour configuration of the seating surface, and the arbor extending circumferentially adjacent to and in close proximity with the exposed cutting edge for supporting the cutting edge in circumferential directions; the external surface of the arbor including first surface portions extending along a support envelope juxtaposed in close proximity with and spaced at a predetermined fixed distance radially away from the cutting envelope such that upon rotation of the arbor during cutting of the seating surface the support envelope will be juxtaposed in close proximity with and spaced radially from the natural bone, and second surface portions located circumferentially adjacent the cutting edge, and at a fixed location radially intermediate and juxtaposed in close proximity with the support envelope and the cutting envelope to follow a stabilizing envelope for juxtaposition and engagement with the natural bone during cutting of the seating surface to stabilize the cutting blade construct within the natural bone while rotating the arbor and cutting blade construct about the central axis of rotation to cut the seating surface.