Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1996-01-18
1997-12-30
Isabella, David
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
623 18, A61F 242
Patent
active
057024693
ABSTRACT:
A trapezium-metacarpal thumb joint prosthesis having a metacarpal component for insertion into a metacarpal bone of a human thumb and a trapezium component for insertion into a trapezium bone of a human thumb. The metacarpal component has a forward end of generally truncated hemispherical shape with a convex surface and a rear end having a base and a stem. The trapezium component has a forward end of a generally cylindrical shape with a concave surface with a radially built up shoulder and a rear end having a base and a stem. The concave surface is adapted for non-captive rotational abutment with the convex surface. Also, a related method for implantation of the prosthesis into the metacarpal and trapezium bones of a human thumb, wherein the two components are respectively inserted into a pre-cut void in each of the respective bones from a direction above the radial side of the thumb substantially transverse to the longitudinal axis of each respective bone of the thumb.
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Stone Glynnis E.
Whipple Terry L.
Isabella David
Jenkins P.A. Richard E.
Kinetikos Medical, Inc.
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