A depth-limiting sheath assembly for endoscopic-assisted anterior cervical surgery

By designing a depth-limiting sheath component for endoscopic-assisted anterior cervical surgery, the problems of inconvenient endoscope position adjustment and spinal cord injury risk were solved, enabling flexible fixation and water flow management, thus improving the safety and efficiency of the surgery.

CN224421127UActive Publication Date: 2026-06-30HAINAN WEIRONGJI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HAINAN WEIRONGJI TECH CO LTD
Filing Date
2025-04-18
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In current endoscopic-assisted anterior cervical spine surgery, the inconvenience of adjusting the position of the endoscope leads to unclear vision, inflexible operation, and risks of spinal cord injury and infection, especially when the intervertebral space is narrow.

Method used

An endoscope-assisted anterior cervical surgery depth-limiting sheath assembly was designed, including an outer sheath and an inner sheath. The endoscope position is adjusted by a spring-loaded block, a fixing block is set to limit the depth, and it is equipped with inlet and outlet water channels and a flexible free arm to achieve flexible fixation of the endoscope and water flow management.

Benefits of technology

It enables flexible adjustment of the endoscope position, avoids spinal cord injury and infection, improves the clarity of the surgical field, simplifies the operation process, and adapts to different intervertebral space narrowing conditions.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a depth-limiting sheath assembly for endoscopic-assisted anterior cervical surgery, comprising an outer sheath and an inner sheath, the inner sheath being inside the outer sheath. The outer sheath has a depth-limiting locking block at its tip, which, during operation, can be locked in front of the cervical vertebrae to limit the depth of the sheath and endoscope. One end of the outer sheath is fixedly connected to a receiving cavity, and a pressure block is disposed within the receiving cavity. One end of the pressure block is connected to the receiving cavity via a first spring, and the pressure block is slidably connected to the receiving cavity. This utility model provides a depth-limiting sheath assembly for endoscopic-assisted anterior cervical surgery, which, through the relative movement of the spring-loaded pressure block between the endoscope and the sheath, limits the depth and allows for relative adjustment of the endoscope's position, facilitating observation of the intervertebral discs.
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