Surgery – Instruments – Orthopedic instrumentation
Patent
1990-04-17
1992-01-07
DeMille, Danton D.
Surgery
Instruments
Orthopedic instrumentation
606 99, A61F 504
Patent
active
050787187
ABSTRACT:
A method and apparatus for removing a pre-placed prosthetic joint from a bone cavity and conditioning the cavity for receipt of a replacement joint. The pre-placed joint is first pulled from the mantle of hardened cement holding it within the cavity, thus leaving a cavity within the mantle. A mass of fluid cement is then placed within the cement cavity, after which a pulling tool is inserted into the fluid cement and the fluid cement is permitted to cure to bond with the hardened cement and form an integral mass. The pulling tool has detachable sections or sleeves, each with grip forming elements on its exterior and structure to connect a slap-hammer to its proximal end. Tension is then applied to the each section to remove the section and the cement mantle surrounding it from the bone cavity. The process is repeated for each section until all of the cement mantle is removed.
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Gresl Charles
McColl Milton B.
Moll Frederic H.
Watkins F. T.
Brown Michael
DeMille Danton D.
Origin Medsystems Inc.
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