Surgery – Instruments – Orthopedic instrumentation
Patent
1994-05-26
1996-05-07
Pellegrino, Stephen C.
Surgery
Instruments
Orthopedic instrumentation
606 79, 606180, A61B 1756
Patent
active
055141412
ABSTRACT:
A reamer designed to create convex, curved shapes on small bones. The reamer comprises a body with a center bore throughout, and a concave head with at least three flutes. The flutes extend from the center of the head outward, being unconnected to each other in any way except at the center of the head portion. Each flute has an outer curved surface, which together form the partially hemispherical outer surface of the head. The inner curved surface is angled to facilitate rapid clearing of bone chips from the work surface. The distal end of each flute has a flat end surface, which is sufficiently large to prevent the flutes from breaking. Each flute also has two side surfaces, a cutting surface and a non-cutting surface. The small joint reamer according to the invention allows bone chips to be cleared easily during operation. This prevents overheating of the bone surface, which can cause necrosis of the bone, preventing proper healing of the patient.
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Howmedica Inc.
Pellegrino Stephen C.
Tucker Guy V.
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