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:
Jun. 07, 2011
Filed:
Jul. 13, 2006
Takao Hotokebuchi, Saga, JP;
Yasuju Takano, Osaka, JP;
Takao Hotokebuchi, Saga, JP;
Yasuju Takano, Osaka, JP;
Saga University, Saga, JP;
Japan Medical Materials Corporation, Osaka, JP;
Abstract
The artificial knee joint includes a femoral component, a tibial tray and an insert plate fixed onto the top surface of the tibial tray. The femoral component includes a femoral articular surface and a cam that is provided on the rear end of the femoral articular surface and protrudes from the femoral articular surface, the insert plate includes a tibial articular surface that makes contact with the femoral articular surface and a cam-receiving slide surface that makes contact with the cam. When the knee is extended, the joint takes a first sliding state in which the femoral articular surface slides against the tibial articular surface. When the knee is bent at an angle in a range from 90 to 160 degrees, the joint shifts from the first sliding state to a second sliding state in which the cam slides on the cam-receiving slide surface. When the knee is bent deeply with a bending angle of 180 degrees, the second sliding state is assumed in which a resection surface of the femoral component and the rear end of the insert plate are offset.