公开(公告)号：US20240352560A1

公开(公告)日：2024-10-24

申请号：US18246445

申请日：2022-11-30

申请人： Shanghai Kindly Medical Instruments Co., Ltd. ,  Shanghai PuMei Medical Instruments Co., Ltd.

发明人： Dongke LIANG ,  Zheng ZHAO ,  Lei SHANG ,  Tao LI ,  Sen LIN

IPC分类号： C22C23/04 ,  A61L27/04 ,  A61L27/58 ,  A61L31/02 ,  A61L31/14 ,  B21C23/00 ,  B22D1/00 ,  B22D21/00 ,  C22C1/02 ,  C22F1/06

CPC分类号： C22C23/04 ,  A61L27/047 ,  A61L27/58 ,  A61L31/022 ,  A61L31/148 ,  B21C23/002 ,  B22D1/002 ,  B22D21/007 ,  C22C1/02 ,  C22F1/06

摘要： The present application provides a biodegradable magnesium alloy without rare earth elements. The magnesium alloy comprises the following elements in percentage by mass: Zn 1.0-5.0%; Mn 0.1-1.0%; Ca 0.1-1.0%; Sr 0.1-1.0%; Sn 0.1-3.0%; Zr 0.1-0.8%; and Mg balance. The impurity in the magnesium alloy does not contain rare earth elements. The present application also provides a method for preparing the above biodegradable magnesium alloy and use in the preparation of medical devices. In the present application, Mg is used as the main components and mixed with a specific proportion of Zn, Ca and Mn to prepare the alloy. The biodegradable magnesium alloy of the present application has a controllable degradation rate and strong mechanical strength, and there are no harmful elements to a human body, and the degradation of the alloy in the human body will not affect human body.

公开(公告)号：US20230146686A1

公开(公告)日：2023-05-11

申请号：US17642177

申请日：2021-09-02

申请人： Shanghai Kindly Medical Instruments Co., Ltd.

发明人： Sen Lin ,  Dongke Liang ,  Hongxin Zhou ,  Lei Li ,  Peng Li ,  Yan Gu

IPC分类号： A61M5/32

CPC分类号： A61M5/322

摘要： Disclosed is a safety syringe that comprises a needle sleeve (1), a needle base (3) and a core rod (2). First claws (34) on the needle base (3) are configured to clamp in a first groove (111) on an inner wall of the needle sleeve (1), one of a proximal end of the needle base (3) and a distal end of the core rod (2) is provided with second claws (33), and the other one thereof is provided with a position-limiting member; the second claws (33) are configured to abut against the position-limiting member along a slanted surface. When the core rod (2) slides towards a distal side to perform injection, the second claws (33) are forced to slide along the slanted surface to pass over the position-limiting member and become hooked onto the position-limiting member, thereby realizing interlocking of the needle base (3) and the core rod (2), and during this process, the core rod (2) slides to drive the first claws (34) to slip out of the first groove (111); or when the core rod (2) retracts, the core rod (2) exerts a pulling force on the needle base (2) towards the proximal side so as to force the first claws (34) to slip out of the first groove (111); the needle base (3) slides towards the proximal side together with the core rod (2), thereby simplifying the structure of the safety syringe.