Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1997-03-27
1999-03-09
Milano, Michael J.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
623 16, A61F 232
Patent
active
058794034
ABSTRACT:
A bistable cement restrictor is provided for creating a fixed obstruction at any selected point within a long bone, particularly at points beyond the isthmus of the bone. An exemplary cement restrictor includes a body having a first end and a second end. One or more bistable fins extend radially from the body and are movable from a first stable state to a stable state either mechanically or thermally. In the first stable state, the cement restrictor is narrower than in the second stable state. While the cement restrictor is readily transitionable from the first stable state to the second stable state, the transition can be irreversible.
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Brochure entitled Cemented Hip Systems Surgical Technique, Johnson & Johnson Orthopaedics, pp. 1-9, dated May 1996.
Mastrorio Brooke W.
Ostiguy Pierre S.
Johnson & Johnson Professional Inc.
Milano Michael J.
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