US 11,666,448 B2
Knee prosthesis and knee prosthesis component
Dayong Song, Beijing (CN); Senyuan Hu, Beijing (CN); Jian Wang, Beijing (CN); and Xiang Dong, Beijing (CN)
Assigned to TIANJIN ZHENGTIAN MEDICAL INSTRUMENT CO., LTD., Tianjin (CN); and BEIJING NATON MEDICAL TECHNOLOGY RESEARCH INSTITUTE CO., LTD., Beijing (CN)
Filed by BEIJING NATON MEDICAL TECHNOLOGY RESEARCH INSTITUTE CO. LTD., Beijing (CN); and TIANJIN ZHENGTIAN MEDICAL INSTRUMENT CO., LTD., Tianjin (CN)
Filed on Jan. 17, 2020, as Appl. No. 16/745,821.
Claims priority of application No. 201910059029.X (CN), filed on Jan. 22, 2019.
Prior Publication US 2020/0229934 A1, Jul. 23, 2020
Int. Cl. A61F 2/38 (2006.01); A61F 2/30 (2006.01)
CPC A61F 2/3868 (2013.01) [A61F 2/389 (2013.01); A61F 2/3859 (2013.01); A61F 2002/30116 (2013.01); A61F 2002/30153 (2013.01); A61F 2310/00029 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A knee prosthesis, comprising:
a tibial component, comprises a platform and at least one rib extending upwardly from an upper surface of the platform and forwardly from a rear of the platform, a front edge of the upper surface of the platform is provided with at least one front lug boss, and a back edge of the upper surface of the platform is provided with at least one back lug boss;
a bearing, a lower surface of the bearing is provided with a groove matching with the at least one rib, and the bearing is provided with a front slot matching with the at least one front lug boss and a back slot matching with the at least one back lug boss; and
a femoral component, articulated with an upper surface of the bearing;
wherein the at least one rib is provided with a medial wall and a lateral wall, wherein at least one of the medial wall and the lateral wall is provided with a bent portion and formed with a first inclined surface and the first inclined surface extends away from a non-bent portion of the other of the medial wall and the lateral wall of the same at least one rib in a direction from the back edge to the front edge;
wherein the at least one rib is not connected to the back edge and is not connected to the front edge; and
the bent portion is provided with a notch in rear of the first inclined surface, and the notch extends upward from the upper surface of the platform and terminates at an upper surface of the at least one rib.