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:
Oct. 15, 2002
Filed:
Apr. 04, 2000
Applicant:
Inventors:
Edward W. Merrill, Belmont, MA (US);
William H. Harris, Belmont, MA (US);
Premnath Venugopalan, Cambridge, MA (US);
Murali Jasty, Weston, MA (US);
Charles R. Bragdon, Weymouth, MA (US);
Daniel O. O'Connor, East Taunton, MA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 3/508 ;
U.S. Cl.
CPC ...
B29C 3/508 ;
Abstract
The present invention relates to a medical prosthesis for use within the body, which is formed of ultra high molecular weight polyethylene having a polymeric structure with less than about 50% crystallinity, less than about 290 Å lamellar thickness and less than about 940 MPa tensile elastic modulus, so as to reduce production of fine particles from the prosthesis during wear of the prosthesis. The present invention also relates to methods of manufacture of such devices and material used therein.