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.