The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 11, 1990
Filed:
May. 01, 1989
Applicant:
Inventors:
Roger G Carignan, Thousand Oaks, CA (US);
Stanley H Nahigian, Hunting Valley, OH (US);
Clyde R Pratt, Somis, CA (US);
Assignee:
Techmedica, Inc., Camarillo, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61F / ;
U.S. Cl.
CPC ...
623 21 ; 623 23 ;
Abstract
An improved carpal-metacarpal thumb joint prosthesis comprising carpal and metacarpal components which are tapered and threaded to facilitate fixation and to promote bone ingrowth together with a recess formed in the carpal component for holding a mesh disc to further enhance bone in-growth and having the carpal component formed generally U-shaped cavity containing an insert formed of ultrahigh molecular weight polyethylene which receives the spherical end of a tapered head which is securely received in a corresponding cavity within the metacarpal component.