Cushion bearing implants for load bearing applications
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United States of America Patent
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Aug 26, 2014
Grant Date -
Jul 22, 2010
app pub date -
Jul 17, 2009
filing date -
Dec 4, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
An acetabular implant for use in a hip joint prosthesis is disclosed. The implant includes a body portion comprising a polycarbonate polyurethane. The body portion includes a substantially semispherical inner articulating surface defining a socket sized to receive a head portion of a femoral component of the hip joint prosthesis and an outer engagement surface having an annular protrusion extending outwardly therefrom. The annular protrusion is configured for snap-fit engagement with a corresponding recess in the acetabulum. The implant also includes a deformation control element having an increased durometer hardness relative to the polycarbonate polyurethane and positioned within the body portion between the inner articulating surface and the outer engagement surface.
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