Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1996-07-03
1997-12-30
Weiss, John G.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
A61F 244
Patent
active
057024553
ABSTRACT:
A spine stabilizing prosthesis has first and second hollow, cylindrical bearing members interconnected by a hollow, cylindrical jacking screw adjustable to expand the prosthesis within a cavity to bridge respective opposite axial ends of the bearing members into pressure engagement with opposing vertebral faces. Walls of the bearing members are perforated by a plurality of bone fragment admitting apertures and forming a bone fragment receptacle so that bone can grow and fuse completely through said bearing members when the prosthesis is installed in the cavity. Respective axial ends of the bearing members are formed with rings of vertebrae engaging teeth having ramp surfaces permitting sliding engagement when rotated in one direction and biting into the facing surfaces when rotated in the opposite direction resisting rotation to permit further expansion apart of the bearing members by rotation of the jacking screw.
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Information Sheet: "DePuy Motech Surgical Titanium Mesh" No. IOM595 0604-29-000 (Rev1) Published 1994.
Black John M.
Usher Robert W. J.
Weiss John G.
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