Vertebral expansion screw and anterior cervical screw plate system

• Main Authors: CHENG TINGTING, HE JING, LIN SHOUHAN, JI RONGQUAN
• Format: Patent
• Language: Chinese; English
• Published: 16.07.2024
• Subjects: DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; SURGERY

The utility model discloses a vertebral expansion screw and an anterior cervical screw plate system, and belongs to the technical field of orthopedic implants, the vertebral expansion screw comprises a hollow screw main body, the screw main body comprises a screw head and a screw rod located below the screw head, and the lower end of the screw rod is provided with an expansion groove. The lower end of the inner core is provided with a conical tip used for expanding the lower end of the screw rod, the vertebral expansion screw has an initial unexpanded state and an implantation expanded state, and in the initial unexpanded state, the inner core is located in the screw rod, and the conical tip extends out of the outer side of the lower end of the screw rod; and in the implantation opening state, the inner core moves upwards, so that the conical tip opens the lower end of the nail rod. The inner core moves upwards to open the nail body, which is different from the mode that the inner core moves downwards to open