公开(公告)号：US20240216146A1

公开(公告)日：2024-07-04

申请号：US18451189

申请日：2023-08-17

申请人： JILIN UNIVERSITY

发明人： Zhihui QIAN ,  Weiguo FAN ,  Lei REN ,  Kunyang WANG ,  Shengli WANG ,  Guangsheng SONG ,  Xia XIE ,  Luquan REN

IPC分类号： A61F2/44

CPC分类号： A61F2/442 ,  A61F2/441 ,  A61F2002/444 ,  A61F2250/0014

摘要： A bionic intervertebral disc with mechanical anisotropy includes an upper end plate, a core and a lower end plate. The core includes outer fibrous rings, a middle transition zone and an inner nucleus pulposus. The fibrous rings comprise collagen fiber sheets and collagen fibers, each of the collagen fibers is attached to a surface of a corresponding one of the collagen fiber sheets and arranged at an inclination angle, ones of the collagen fibers which are on every two adjacent layers of the collagen fiber sheets are arranged crosswise with each other. A honeycomb meshing size of a portion, which is located at a fibrous-ring transition zone, of the honeycomb structure is smaller and more compact, and a honeycomb meshing size of a portion, which is located at a nucleus pulposus transition zone, of the honeycomb structure is larger and sparser.

公开(公告)号：US20230067978A1

公开(公告)日：2023-03-02

申请号：US17896054

申请日：2022-08-25

申请人： Jilin University

发明人： Kunyang WANG ,  Lei REN ,  Zhihui QIAN ,  Xuewei LU ,  Wei LIANG ,  Yi ZENG ,  Luquan REN

IPC分类号： A61F2/66

摘要： A small-size multi-axis ankle joint prosthesis is provided. Two ends of each of four springs are fixedly connected with two spring seats at an upper part and at the lower part respectively. The joint axes are positioned in a space surrounded by the lower part, the four springs and the upper part. Front and rear perforated blocks in the joint axes are respectively in bolted connection with a fifth arc hole pair g and a sixth arc hole pair h of a second arc plate in the upper part. Left and right perforated blocks in the joint axes are respectively in bolted connection with a second arc hole pair e and a third arc hole pair f of the first arc plate in the lower part.

公开(公告)号：US20220400814A1

公开(公告)日：2022-12-22

申请号：US17807191

申请日：2022-06-16

申请人： Jilin University

发明人： Kunyang WANG ,  Lei REN ,  Zhihui QIAN ,  Wei LIANG ,  Yifeng XUE ,  Xuewei LU ,  Haohua XIU ,  Luquan REN

IPC分类号： A43B21/42 ,  A43B3/24 ,  A43B13/34

摘要： A separated prosthetic foot with a transverse arch belongs to the technical field of manufacturing of artificial limbs. The characteristics of the transverse arch of the human foot are combined into the previous transverse-straight carbon fiber foot design to improve the stiffness of the prosthetic foot and reduce the weight of the prosthetic foot. A forefoot part employs a separated curved plate design, and two simple curved plates with different curvatures are used for simulating a complex curved surface of the transverse arch of the human, such that the manufacturing cost is reduced, and the various parts of the sole are non-uniform in stiffness distribution: the outer side of the foot is a single-layer forefoot plate with a smaller curvature and minor stiffness; and the inner side of the foot is a double-layer stacked forefoot plate, and the lower layer plate has a large radius in curvature and stiffness.