A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
3/101
A61F 2/30 (2006.01) A61F 2/38 (2006.01) A61F 2/46 (2006.01)
Patent
CA 1330688
ABSTRACT A tool for separating the two components of a modular joint prosthesis intended for implantation in a body. The prothesis 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 proper size of female stem is obtained by selecting it from a family of female stems having a graduated sequence of different external dimensions. A tool is also disclosed for the disengage the female stem from the bone.
614105
Depuy Orthopaedics Inc.
Sim & Mcburney
LandOfFree
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