Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Reexamination Certificate
2002-12-03
2009-08-11
Willse, David H (Department: 3774)
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
C623S022260, C623S022300, C623S022320, C623S022380
Reexamination Certificate
active
07572295
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 comprising a polyethylene having an increased durometer hardness relative to the polycarbonate polyurethane and positioned entirely within the body portion between the inner articulating surface and the outer engagement surface.
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patent:
Active Implants Corporation
Blanco Javier G
Haynes and Boone LLP
Willse David H
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