Prosthesis, method, and tool for installing same
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United States of America Patent
Stats
-
Dec 22, 1987
Grant Date -
N/A
app pub date -
Jan 17, 1986
filing date -
Jan 17, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An endoprosthesis which comprises a flexible, collapsible, hollow device which can be filled after it is positioned within the bone structure. In the case of a prosthesis designed to replace the ball of the femur, the endoprosthesis has a ball portion, a neck portion attached to and communicating with the ball portion, a body portion attached to and communicating with the neck portion, and an access opening opposite the ball portion. A method for installing the endoprosthesis in the hip is also described, in which a portal is drilled through the lateral cortex of the femur at a location opposite the ball, the ball of the femur is removed, and the endoprosthesis is inserted through the portal. Finally, the invention provides a special tool that can be used for removing the ball of the femur through a portal in the lateral cortex without dislocating the hip. Generally, this tool comprises a rotatable shaft, a blade received in an end portion of the shaft, and being hinged at its lower end, and means for extending and retracting the blade.
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