Carpal bone biaxially restrained prosthesis
AssigneeUresil Corporation
InventorRobert Goldberg
Life of this patent
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Abstract
A carpal bone prothesis comprising a body member made of a biocompatible, medically inert material which is designed to be restrained along at least two independent axes. In one important embodiment, the body member includes at least two independent channels and ingrowth receptive ligaments which extend through the channels and are attached to adjacent carpal bones along the first axis and to the dorsal and palmar capsules along the second axis.
Claims67
A surgically implantable carpal bone prosthesis comprising:
- a biocompatible, medically inert body member contoured to resemble the shape of the carpal bone which it is to replace;
- and
- means for restraining said body member along crisscrossing axes which pass through the body member, the body member including at least two independent channels passing therethrough along the independent axes and the restraining means comprising ligamentous means passing through the channels.
A method for replacing a damaged carpal bone in a human wrist with a carpal bone prosthesis comprising:
- removing the damaged carpal bone;
- positioning a biocompatible, medically inert body member contoured to resemble the shape of the carpal bone which it is to replace at the site formerly occupied by the damaged carpal bone, said body member having at least two criss-crossing channels;
- and
- permanently restraining the body member along at least two independent axes passing through the criss-crossing channels using ligamentous means anchored within the channels by adhesive, by porous coating ingrowth, or by both adhesive and porous coating ingrowth.
A method for replacing a damaged carpal bone in a human wrist with a carpal bone prosthesis comprising:
- removing the damaged carpal bone;
- positioning a biocompatible, medically inert body member contoured to resemble the shape of the carpal bone which it is to replace at the site formerly occupied by the damaged carpal bone, said body member having at least two criss-crossing channels;
- and
- permanently restraining the body member along at least two independent axes passing through the criss-crossing channels having a porous coating.
A surgically implantable carpal bone prosthesis comprising:
- a biocompatible, medically inert body member contoured to resemble the shape of the carpal bone which it is to replace;
- and
- means for restraining said body member along two intersecting axes which pass through the body member and channels passing therethrough along the intersecting axes, said restraining means comprising ligamentous means passing through the channels.
A surgically implantable carpal bone prosthesis comprising:
- a biocompatible, medically inert body member contoured to resemble the shape of the carpal bone which it is to replace;
- and
- means for restraining said body member along at least two independent channels having a porous coating which pass through the body member,
- said restraining means comprising ligamentous means passing through the channels.
A method for replacing a damaged carpal bone in a human wrist with a carpal bone prosthesis comprising:
- removing the damaged carpal bone;
- positioning a biocompatible, medically inert body member contoured to resemble the shape of the carpal bone which it is to replace at the site formerly occupied by the damaged carpal bone, said body member having at least two independent channels with a porous coating;
- and
- restraining the body member along at least two independent axes passing through the independent channels.
Dependencies are inferred from the claim text.