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公开(公告)号:US20220175432A1
公开(公告)日:2022-06-09
申请号:US17112573
申请日:2020-12-04
Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
Inventor: Hsin-Hsin SHEN , Pei-I TSAI , Kuo-Yi YANG , Fang-Jie JANG , An-Li CHEN , Shih-Ping LIN , Chih-Chieh HUANG , Yi-Hung WEN , Wei-Lun FAN , Shin-I HUANG
IPC: A61B17/86
Abstract: A bone screw includes an external screw thread, an internal supporter structure and a porous layer. The internal supporter structure is inside the external screw thread. The internal supporter structure includes a screw thread supporter or a polygonal wall supporter. The porous layer is on a surface of the internal supporter structure. Therefore, the bone screw has an increased strength and also provides postoperative healing effect.