公开(公告)号：US20240100598A1

公开(公告)日：2024-03-28

申请号：US17768925

申请日：2020-10-29

申请人： South China University of Technology ,  Huazhong University of Science and Technology ,  Jilin University

发明人： Yuanyuan Li ,  Chao Yang ,  Xuan Luo ,  Dongdong Li ,  Yanguo Qin ,  Ning Li

IPC分类号： B22F10/28 ,  B22F9/08 ,  B22F10/366

CPC分类号： B22F10/28 ,  B22F9/08 ,  B22F10/366 ,  B22F2009/0808 ,  B22F2301/205

摘要： The present invention relates to a Si-containing high-strength and low-modulus medical titanium alloy, and an additive manufacturing method and use thereof. The additive manufacturing method comprises alloy ingredient design, powder preparation, model construction and substrate preheating, and additive manufacturing molding; wherein the Si-containing high-strength and low-modulus medical titanium alloy is designed in the ingredient proportion of Ti 60-70 at. %, Nb 16-24 at. %, Zr 4-14 at. %, Ta 1-8 at. %, Si 0.1-5 at. %. The principle of the present invention is design of a medical β-type titanium alloy having high-strength and low-modulus and good biocompatibility by using d-electron theory; reducing the difference of thermal expansion between the silicide and the β-Ti phase by preheating, and at the same time, ensuring that there is a sufficient degree of cooling in the additive manufacturing process to promote the transition of the alloy from the divorced eutectic reaction to the precipitation reaction, thereby solving the common problems, such as the deterioration of mechanical properties caused by the continuous distribution of the Si-containing phase along the grain boundary and the cracking caused by the difference of thermal expansion coefficient between different phases.

公开(公告)号：US12053385B2

公开(公告)日：2024-08-06

申请号：US18534691

申请日：2023-12-10

申请人： HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

发明人： Dongdong Li ,  Yuanyuan Li ,  Dongxu Chen

IPC分类号： A61F2/34 ,  A61F2/30

CPC分类号： A61F2/34 ,  A61F2/30771 ,  A61F2002/30784 ,  A61F2002/3092

摘要： A partition design and molding method for an acetabular cup prosthesis with a porous surface includes the following: modeling of a spherical shell of an acetabular cup; cutting of the spherical shell of the acetabular cup into equal parts; integrated design on a porous layer of a surface of the partitioned acetabular cup prosthesis; reorganization of the partitioned acetabular cup prosthesis; construction of a hemispherical acetabular cup prosthesis; and 3D printing and manufacturing of the acetabular cup prosthesis. Through the disclosure, the formed porous layer is perpendicular to the surface of the acetabular cup, so favorable mechanical properties are provided. A fully interconnected branch-rod structure is provided, and there is no isolated rod, so that inflammation or even re-revision led by the detachment of isolated rods during long-term postoperative activities is prevented.