Anterior cervical vertebra self-locking fusion device

Abstract

The invention discloses an anterior cervical vertebra self-locking fusion device. The device comprises a fusion body of an arc-shaped structure, wherein two ends of the fusion body are closed by end covers; the inner part of the fusion body is of a hollow structure; a left tenon body and a right tenon body are respectively arranged on the end covers at two ends of the fusion body; each of the lefttenon body and the right tenon body form an angle of 45 degrees with the bending direction of the fusion body; the left tenon body and the right tenon body are vertical to each other; and two lockingscrew holes are respectively formed in each of the left tenon body and the right tenon body. The invention overcomes the defects in the prior art. The self-locking fusion device effectively reduces shearing under action of stress and avoids fusion failure of two ends according to the radian of a cervical vertebra force line; and the tenon bodies at two ends are locked and fixed, and tenon-mortiseself-locking is combined, so that the self-locking fusion device has higher early fixing strength compared with a steel plate fusion device, and a surface coating contact surface is beneficial to healing and has an anti-sinking effect.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an anterior cervical self-locking fusion device. Background technique [0002] Cervical spondylosis is a common disease in recent years. Anterior cervical decompression, fusion and internal fixation is the most classic surgical method for the treatment of cervical spondylosis. It can completely decompress the cervical spinal cord and nerves in the cervical spinal canal, and at the same time maximize the Restoring the normal height of the intervertebral space and maintaining the normal physiological curvature of the cervical spine, combined with bone graft fusion to ensure the stability of the surgical segment. Including anterior cervical discectomy, spinal canal decompression, fusion and internal fixation (Anterior Cervical Discectomy with Fusion, ACDF) and anterior cervical corpectomy, spinal canal decompression, fusion and internal fixation (Anterior Cervical Corpectony...

AI Technical Summary

Problems solved by technology

Including anterior cervical discectomy, spinal canal decompression, fusion and internal fixation (Anterior Cervical Discectomy with Fusion, ACDF) and anterior cervical corpectomy, spinal canal decompression, fusion and internal fixation (Anterior Cervical Corpectony and Fusion, The development of ACCF) bone graft materials from the initial autologous bone to the PEEK material titanium cage is inseparable from the combination of steel plate fixation, the titanium cage often sinks, the internal fixation fails, and the unavoidable space occupation of the titanium plate on the posterior wall of the esophagus Cause postoperative dysphagia and foreign body sensation; In order to reduce the occurrence of the above complications and improve the surgical effect, various zero-cut fusion devices (ZERO-P) and self-stabilizing intervertebral fusion systems are easy to operate, with small surgical trauma and short operation time , less intraoperative blood loss, fast postoperative recovery, etc., in line with the development concept of minimally invasive, but it is extremely difficult to operate on the upper cervical spine or lower cervical spine, and cannot effectively restore the good vertical line of the cervical spine. The application of multi-segment and multi-fusion devices The price is extremely expensive, which limits its clinical use

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