Corticotomo osteotome with T-shaped cutting end

Details Corticotomo osteotome with T-shaped cutting end Corticotomo osteotome with T-shaped cutting end

1988-10-03

1989-11-21

Thaler, Michael H.

Surgery

Instruments

Orthopedic instrumentation

606 79, A61B 1732

Patent

active

048815349

ABSTRACT:
A corticotomy osteotome is provided comprising an elongated body having a cutting end and an anvil end adapted for engagement with a mallet in advancing the cutting end, wherein the cutting end is of T-shaped cross-sectional form with the cross head of the T providing bearing surfaces for engaging outer surfaces of the bone cortex, and a rib extending perpendicularly and centrally of the bearing surfaces which protrudes from the bearing surfaces a distance approximately equivalent to the thickness of the bone cortex, the rib terminating in a tapered cutting edge extending perpendicularly to the bearing surfaces and being spaced inwardly from the leading edge of such bearing surfaces, and the upper surfaces of the body being smoothly rounded and tapered in the direction of the leading edge of the bearing surfaces permitting the leading edge to lift the periosteum from the bone cortex and support it in spaced relation to the cortex as the osteotome is advanced to cut the cortex, and the anvil end being engagable by a transverse member facilitating axial twisting of the osteotome at the end of a cortex cutting operation to facilitate enlargement of the cut made in the cortex.

REFERENCES:
patent: 1598458 (1926-08-01), Sullivan
patent: 2203158 (1940-06-01), Klein
patent: 2465305 (1949-03-01), Cope
patent: 4239045 (1980-12-01), Schlein

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