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:
Jul. 26, 2005
Filed:
Dec. 27, 2001
Joseph H. Contiliano, Stewartsville, NJ (US);
J. Jenny Yuan, Neshanic Station, NJ (US);
Kevor S. Tenhuisen, Clinton, NJ (US);
Joseph H. Contiliano, Stewartsville, NJ (US);
J. Jenny Yuan, Neshanic Station, NJ (US);
Kevor S. Tenhuisen, Clinton, NJ (US);
Ethicon, Inc., Somerville, unknown;
Abstract
An orthopedic screw with an internal bore and mating driver has a bioabsorbable polymer component. To increase the torque tolerance of the screw and to minimize the likelihood of the driver stripping inside the bore of the screw, the screw and driver are heat treated together to shrink fit the screw onto the driver thereby increasing the driver-to-screw contact and distributing the loading force over a greater area to protect against material failure. The heat treatment involves heating the screw to an elevated temperature and holding that temperature for a period to promote stress relaxation and/or crystallization of the material.