ARTIFICIAL CERVICAL VERTEBRA COMPOSITE JOINT

摘要

An artificial cervical vertebra composite joint is composed of two fixing parts (1) symmetrically arranged in vertical direction, a vertebral body part (2) and two connecting parts (3). The vertebral body part (2) is connected between the two fixing parts (1) by the connecting parts (3). The fixing part (1) is of "L"-shape, which includes a front wing part (6) and a base part (4). A locking screw hole (5) is provided on the front wing part (6), and a raised antiskid groove (8) with pawls is provided in the middle of the base part (4). A bone implant hole (21) transversely runs through the middle of the vertebral body part (2), and two cavities for installing the connecting parts (3) are provided at both of upper and lower sides about the axial center of vertebral body part (2). One end of each connecting parts (3) is mounted inside the cavity by a fixing ring (9), and the other end is connected with the fixing part (1), so as to form a stable ball-and-socket joint with sliding slot.