Surgery – Truss – Perineal
Patent
1988-01-11
1989-05-30
Apley, Richard J.
Surgery
Truss
Perineal
623 20, A61B 1700, A61B 1718, A61F 504
Patent
active
048340812
ABSTRACT:
A tool for removal of a joint prosthesis intended for implantation in a body. The prosthesis includes a component adapted to be fixed to a long bone having an intramedullary canal and further includes an elongated male stem having a uniformly tapered outer surface. In order to accommodate the particular size of long bone to which the component is to be fixed, a properly sized female stem is attached to the male stem before the component is fixed to the long bone. The female stem is adapted to be received in the intramedullary canal for fixation thereto, and has a uniformly tapered inner surface, the angle of the taper being substantially similar to the angle of taper of the outer surface of the male stem. As a result, the male stem and female stem become locked together when the inner surface of the female stem engages the outer surface of the male stem. The tool serves to disengage is obtained the male stem from the female stem as well as to disengage the female stem from the bone.
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"Standard Tapers", from Machinery's Handbook, 20th edition, 1979, pp. 1722-1724.
The Medical Journal of Australia, 1-1934, p. 13.
Apley Richard J.
Bender David J.
Boehringer Mannheim Corporation
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