US 2017/0303935 A1 · FLUTED OSTEOTOME AND SURGICAL METHOD FOR USE

Abstract

A surgical method and tool for expanding an initial osteotomy (42) to receive a bone implant (44). An osteotome (22) having a tapered working end (28) is inserted into the initial osteotomy (42). The initial osteotomy (42) is enlarged by simultaneously rotating and pushing the working end (28) of the tapered osteotome (22) into the osteotomy (42). When rotated in one direction the burnishing edges (40) concentrate the pushing and rotational force in outward normal and tangential component forces against the interior surface of the osteotomy (42) to incrementally expand the osteotomy (42) with little to no removal of bone material (46). When rotated in the opposite direction the burnishing edges cut the interior surface of the osteotomy. Progressively larger tapered osteotomes (22) are used until an osteotomy (42) of predetermined size is achieved.

Claims10

Dependent claims

A method for expanding the diameter of an osteotomy prior to receiving a bone fixture, said method comprising the steps of:

continuously rotating the working end of a bone expander tool in a non-cutting direction at speeds greater than 200 RPM, the working end being defined by a plurality of longitudinally extending blades each having a negative rake angle,
pushing the working end with gentle axial force into a preexisting osteotomy having interior surfaces composed essentially of bone material, said pushing step including axially pumping the working end so that the blades alternately contact and separate from the interior surface of the osteotomy,
irrigating the working end with a cooling saline or water spray concurrently with said continuously rotating and pushing steps.

Dependencies are inferred from the claim text.

Fluted osteotome and surgical method for use

Life of this patent

Fluted osteotome and surgical method for use

Life of this patent

Abstract

Claims10