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. 24, 2023
Filed:
Aug. 16, 2019
Kyocera Corporation, Kyoto, JP;
KYOCERA Corporation, Kyoto, JP;
Abstract
Provided is an artificial joint that can improve fatigue strength while achieving the ability to fix to a bone. An artificial jointincludes a stem portion. The stem portionhas a distal end for insertion into a bone and a proximal end opposite the distal end and includes a roughened surface portionwhich is provided in a proximal end-side portion, which has a rougher surface than a distal end-side portion, and which is larger in cross-sectional area than the distal end-side portion. The roughened surface portionincludes a distal end-side edge sectionand a proximal end-side section, the distal end-side edge sectionincluding a distal end-side edge portion of the roughened surface portion, the proximal end-side sectionbeing configured as a section closer to the proximal end than the distal end-side edge sectionis to the proximal end. The distal end-side edge sectionhas a surface roughness Ralower than a surface roughness Ra, Raof the proximal end-side section.