Spine joint for artificial cervical disc replacement

Abstract

The invention discloses a spine joint for artificial cervical disc replacement. The spine joint is characterized by comprising an upper vertebral joint movable plate (1) and a lower vertebral joint movable block (2). A middle elastic supporting component (3) is arranged between the upper vertebral joint movable plate (1) and the lower vertebral joint movable block (2); the lower end face of the upper vertebral joint movable plate (1) makes sliding contact with the upper end face of the middle elastic supporting component (3), the upper end face of the lower vertebral joint movable plate (2) makes sliding contact with the lower end face of the middle elastic supporting component (3), and the upper vertebral joint movable plate (1) and the lower vertebral joint movable plate (2) adopt the middle elastic supporting component (3) as supporting to relatively slide along the surface of the middle elastic supporting component (3); the upper surface of the upper vertebral joint movable plate (1) and the lower surface of the lower vertebral joint movable plate (2) are each provided with a plurality of top friction protrusions (11). According to the spine joint for artificial cervical disc replacement, the artificial spine supporting force is large, and the service life is long.

Description

technical field [0001] The invention relates to a spinal joint used for artificial cervical intervertebral disc replacement, belonging to the field of medical instruments. Background technique [0002] Artificial cervical disc replacement is a new technology that emerged in the late 20th century. After anterior discectomy, a movable device is placed in the intervertebral space to replace the original disc and perform its function, so as to preserve the motion segment and reduce the relative disc replacement. The purpose of secondary degeneration in adjacent segments. The mobile device used in the prior art has limited relative movement of the vertebrae at both ends of the intervertebral space due to structural reasons, and the mobile device has poor deformation resistance and is prone to deformation after replacement, resulting in a short service life. Contents of the invention [0003] Aiming at the shortcomings of the prior art that "the relative movement of the vertebr...

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Problems solved by technology

[0003] Aiming at the shortcomings of the prior art that "the relative movement of the vertebrae at both ends of the intervertebral space is limited due to the structure of the movable device, and the deformation resistance of the movable device is poor, and it is prone to deformation after replacement, resulting in a short service life", Provides a spinal joint for artificial cervical disc replacement

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