A dilator for endoscopic spinal surgery with a nerve root retractor

By combining the clamp-type retraction component with Kirschner wires, and using hooks and cross-hinged clamp arms to fix and retract nerve roots and dura mater during spinal endoscopic surgery, the problem of insufficient nerve root protection in existing technologies is solved, resulting in a clearer surgical field and reduced surgical risks.

CN224461738UActive Publication Date: 2026-07-07晋江市医院(上海市第六人民医院福建医院)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
晋江市医院(上海市第六人民医院福建医院)
Filing Date
2025-04-03
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

In existing technologies, unilateral approach bilateral decompression spinal endoscopic surgery is difficult to effectively protect nerve roots and dura mater. In particular, the position and force of the nerve root retractors are difficult to control, which leads to a high risk of complications such as dural sac tearing or nerve root injury.

Method used

Design a spinal endoscopic retractor with nerve root retractors, combining a clamp-type retractor component and Kirschner wires. The Kirschner wires are fixed to the bone of the vertebral body of the spine, and the cannula is rotated around the Kirschner wires for fixation and positioning. The retractors hook and pull the nerve root and dura mater, and the cross-hinged clamp arms are used for retraction, achieving full protection of the nerve root.

Benefits of technology

It improves the clarity of the surgical field, reduces the risk of nerve root injury and dural tear, provides continuous protection for nerve roots around the spine, and reduces surgical risks.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of medical auxiliary device, concretely relates to a kind of distraction device with nerve root retractor for endoscopy of spine, including pincer distraction component and kirschner wire, the pincer distraction component is equipped with mutually crossed articulated left jaw arm and right jaw arm, and the front end of left jaw arm and right jaw arm is equipped with sleeve and retractor respectively, kirschner wire can be fixed in the vertebral bone mass of patient's spine, and the sleeve of pincer distraction component can be sleeved on kirschner wire and can rotate around kirschner wire.The utility model is fixed and positioned by using kirschner wire fixed in the vertebral bone mass of patient's spine and using sleeve to rotate around kirschner wire moderately, the nerve root and dura mater outside spine are pulled by using retractor hook, and left jaw arm and right jaw arm are crossed articulated and are moderately distracted, so that operation visual field can be more clear, and nerve root around spine can be protected throughout, and operation risk can be reduced.
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