Intramedullary nail

By designing an intramedullary nail that includes sleeve, drive assembly, transmission assembly and support nail, the monitoring difficulty and risk of traditional intramedullary nail extension methods are solved, flexible adjustment of intramedullary nails and drug release on demand are achieved, and surgical safety and treatment effect are improved.

CN119632647AActive Publication Date: 2025-03-18SUZHOU & SCI & TECH DEV
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Patent Information

Application Number
CN202510173727.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-18
Publication Date
2025-03-18
Estimated Expiration
2045-02-18

AI Technical Summary

Technical Problem

The traditional intramedullary nail extension method has problems such as difficulty in monitoring and difficulty in ensuring elongation accuracy. The tail drive increases the difficulty of surgery and the pain of the patient, is risky, and the administration method is uncontrollable.

Method used

An intramedullary nail including a sleeve, a drive assembly, a transmission assembly and a support nail is designed. The transmission assembly is driven by a mechanical or electric drive assembly to drive the support nail for axial movement, achieving flexible adjustment of the intramedullary nail, and filling the sleeve with a mesh hydrogel to achieve on-demand release of drugs.

Benefits of technology

The prolongation process of intramedullary nails is achieved with stable results, accurate results, convenient operation, small wounds, reducing surgical risks and patient pain, and quantitative release of drugs is achieved through reticular hydrogels, improving treatment effect and patient comfort.

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Abstract

The invention provides an intramedullary nail which comprises a sleeve, a driving assembly, a transmission assembly and a supporting nail, the driving assembly and the transmission assembly are arranged on the upper portion of the sleeve, the supporting nail is arranged on the lower portion of the sleeve, the transmission assembly comprises a rotating rod and a rotating ring, and a limiting groove is formed in the sleeve. The limiting groove is used for limiting the axial position of the rotating rod in the sleeve, external threads are arranged on the outer circle wall of the rotating rod, internal threads matched with the external threads are arranged on the inner circle wall of the rotating ring, and the rotating ring is arranged above the supporting nail. The driving assembly can drive the rotating rod to rotate around the axis of the rotating rod from the side face or the top, and the rotating ring can drive the supporting nails to do axial movement synchronously. By means of the structure, the intramedullary nail can flexibly adjust the lengthening speed and strength according to the condition of a patient, the lengthening process is stable, the lengthening result is accurate, operation is convenient and fast, a wound is small, and the machining method is low in cost and high in efficiency.
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