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:
Mar. 04, 2025
Filed:
Feb. 18, 2020
Teijin Nakashima Medical Co., Ltd., Okayama, JP;
Dai Kiyotomo, Okayama, JP;
Takayuki Inoue, Okayama, JP;
TEIJIN NAKASHIMA MEDICAL CO., LTD., Okayama, JP;
Abstract
An artificial knee joint includes: a femoral component including a medial condyle and a lateral condyle; and a tibial component including an inner sliding surface that receives the medial condyle and an outer sliding surface that receives the lateral condyle. A curvature radius of each of the inner sliding surface and the outer sliding surface in a medial-lateral direction increases from an anterior side toward a posterior side within a predetermined range in an anterior-posterior direction. In the medial-lateral direction, the inner sliding surface and the outer sliding surface are positioned inward such that a middle point between a lowest point of the medial condyle and a lowest point of the lateral condyle in a knee extended position is shifted inward relative to a center of the tibial component by 2 to 10% of a width of the tibial component.