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:
Jan. 31, 2017
Filed:
Nov. 28, 2012
Beijing Naton Technology Group Co., Ltd., Beijing, CN;
Tiebing Qu, Beijing, CN;
Cheng-kung Cheng, Beijing, CN;
Dayong Song, Beijing, CN;
Lili Hou, Beijing, CN;
BEIJING NATON TECHNOLOGY GROUP CO., LTD, Beijing, CN;
Abstract
An artificial knee joint includes a femoral component () and a tibial component (). The femoral component () includes an intercondylar box (). A cam () is provided on posterior of the intercondylar box (). The tibial component () includes a medial condyle bearing surface () and a lateral condyle bearing surface () arranged on right and left side respectively. A post () is provided between the medial condyle bearing surface () and the lateral condyle bearing surface (). The post () is adapted to the intercondylar box (). The post () has a first arc surface () on the lateral side of posterior surface. The post () has a second arc surface () on the posterior surface and on the medial side of the first arc surface (). A third arc surface () and a forth surface (), cooperating with the first arc surface () and the second arc surface (), are provided on the cam () accordingly. The first arc surface () can cooperate with the third arc surface () so as to guide the femur to rotate laterally with respect to the tibia. The second arc surface () can cooperate with the forth surface () so as to resist the femur to rotate laterally with respect to the tibia. The artificial knee joint can simulate accurately the flexion-extension action of the knee joint, and is safe and reliable.