Bipolar hip prosthesis with locking head
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 27, 2001
Grant Date -
N/A
app pub date -
Mar 27, 1998
filing date -
Mar 27, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An articulating prosthesis includes a cup having a shell and a liner and at least one resilient locking element. The shell has a spherical outer surface that may be adapted to articulate with an acetabulum and the liner has a spherical inner surface that forms an articulation surface for the spherical head of a stem member. The resilient locking member extends inward toward a longitudinal axis of the cup and at least partially in a superior direction. The resilient locking element defines a nominal first diameter expandable to a larger second diameter in response to a force and is returnable to the first diameter in the absence of the force for securing the head of a stem prosthesis member.
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