Fistula implant

By combining the structural design of the spirochete and the expanded body, the problem of the anal fistula implant being prone to break out and bringing pain after implantation is solved, stable sealing and improved comfort, and reduced the risk of reinfection and surgery.

CN119679468AActive Publication Date: 2025-03-25CHANGCHUN SINOBIOMATERIALS CO LTD
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Patent Information

Application Number
CN202510202269.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-24
Publication Date
2025-03-25
Estimated Expiration
2045-02-24

AI Technical Summary

Technical Problem

Existing anal fistula implants are prone to blockage and pain caused by twisting together with the tissues in the fistula after implantation, and are easily squeezed out and failed, resulting in reinfection and secondary fistula.

Method used

An implant consisting of a spirochete and an expanded body is used. The spirochete is used for the front end implantation and the expanded body is used for the rear end expansion and fixation, forming a closed structure to prevent feces from flowing into the fistula again, and improve adhesion and comfort through anti-rewinding structures and convex ridges.

Benefits of technology

The stable sealing effect of the implant is achieved, pain and failure of prolapse are avoided, the risks of reinfection and secondary surgery are reduced, and the comfort and service life of the implant is improved.

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Abstract

The fistula implant comprises a spiral body and an expansion body which are connected with each other, one end of the spiral body is an implanting end, and the other end of the spiral body is a connecting end; the expansion body is in a cone shape formed by a plurality of expansion pieces in a surrounding mode, the connecting positions of the expansion pieces form the near end of the expansion body, and the connecting end and the near end are fixedly connected and do not communicate with each other. The Young modulus of the fistula implant ranges from 400 MPa to 3000 MPa, the shear modulus of the fistula implant ranges from 150 MPa to 1200 MPa, and the Poisson's ratio of the fistula implant ranges from 0.3 to 0.4. The invention provides a fistula implant which can guarantee the plugging effect after implantation, prevent secondary liquid leakage, avoid pain caused by plugging and improve comfort.
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