Surgery – Instruments – Orthopedic instrumentation
Patent
1993-11-18
1994-12-27
Graysay, Tamara L.
Surgery
Instruments
Orthopedic instrumentation
407 54, 408227, 408207, A61B 1716
Patent
active
053760921
ABSTRACT:
A reamer for shaping a socket, such as a hip socket, comprising a cutting head located at one end of a rotatably driven shaft and having a hemispherical portion with a hemispherical exterior surface. The hemispherical portion containing an open substantially hollow chamber and helical openings such as slots, in said hemispherical portion connecting between the exterior surface and the chamber. The trailing portion of each of the openings having a cutting or trailing edge raised slightly above the leading edge of the opening or slot to move material from the socket into the chamber during rotation of the cutting head. The cutting edges having serrations thereon. At least two cutting edges extending across the polar region of the cutting head. A stem extending from the interior center point of the substantially hollow chamber and extending along the polar axis of the hemispherical reamer for connecting and disconnecting the cutting head to a rotatable source.
REFERENCES:
patent: 3702611 (1972-11-01), Fishbein
patent: 4131116 (1978-12-01), Hedrick
patent: 4621637 (1986-11-01), Fishbein
patent: 4811632 (1989-03-01), Salyer
patent: 5100267 (1992-03-01), Salyer
patent: 5116165 (1992-05-01), Salyer
patent: 5203653 (1993-04-01), Kudla
patent: 5290315 (1994-03-01), DeCarlo, Jr.
Hein Todd J.
Utley Mike K.
Farrar Jennifer K.
Graysay Tamara L.
Hoffman Amy J.
Orthopaedic Innovations, Inc.
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