Kirschner wire sleeve device for muscle layer expansion

By designing the Kirschner wire cannula device and using biocompatible materials and a buffer lubrication structure, the problems of damage and uneven expansion of the muscle layer expansion device have been solved, achieving safe and flexible adjustment of the operating space and improving surgical efficiency and applicability.

CN121101722APending Publication Date: 2025-12-12THE FIRST AFFILIATED HOSPITAL OF BENGBU MEDICAL COLLEGE
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Patent Information

Application Number
CN202511663913.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-13
Publication Date
2025-12-12

AI Technical Summary

Technical Problem

Existing muscle expansion devices lack damage prevention structures and lubrication mechanisms, leading to muscle lacerations, inflammatory reactions, and postoperative rejection. Furthermore, their expansion adjustment capabilities are insufficient, making it difficult to achieve uniform expansion and flexible adjustment of the operating space.

Method used

A Kirschner wire cannula device was designed, including an expansion cannula, a support, a protective layer, and a traction rod. It uses biocompatible materials, incorporates a buffer structure and lubricant, achieves uniform expansion through a guide ring and a connecting frame, and allows for adjustable operating space, providing multiple expansion methods to adapt to different surgical needs.

Benefits of technology

It significantly improves the safety and reliability of muscle layer expansion, reduces tissue damage, provides flexible operating space adjustment, improves surgical efficiency and applicability, and ensures uniform and stable expansion.

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Abstract

The invention discloses a kirschner wire sleeve device for muscle layer expansion, which relates to the technical field of orthopedic surgery and comprises a kirschner wire, an expansion sleeve, a protective layer and a traction rod. The expansion sleeve is composed of a support and an expansion layer, a guide ring is arranged in the middle of the support, symmetrical connecting frames are arranged on the outer side of the guide ring, the expansion layer is sleeved outside the guide ring, and one end close to a skeleton is of an involute pipeline structure. After the Kirschner wire fixes the bone, the guide ring slides towards the bone along the Kirschner wire, the involute pipeline structure of the expansion layer enters the space between the Kirschner wire and the muscle layer, and the muscle layer is pushed away outwards to form an operation space. The protective layer can reduce direct friction between the muscle layer and the expansion layer, and the lubricant arranged in the protective layer can assist operation; the traction rod can stably control the expansion layer to be opened. The device is made of a biocompatible material and is provided with a buffer structure, the operation space can be flexibly adjusted, the operation safety, adaptability and efficiency are effectively improved, and the use pain point of a traditional kirschner wire sleeve device is solved.
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