A bionic prosthesis tension pin instrument positioning device

By using a biomimetic prosthesis tension nail positioning device, and by employing ball-head trial molding and guide hole technology, the problem of tension nail implantation deviation has been solved, achieving accurate positioning and stable installation of the prosthesis and extending its service life.

CN115153979BActive Publication Date: 2026-01-20PEOPLES HOSPITAL PEKING UNIV +1
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Patent Information

Application Number
CN202210825612.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-07-14
Publication Date
2026-01-20
Estimated Expiration
2042-07-14

AI Technical Summary

Technical Problem

In hip surgery, misalignment of tension screw implantation can lead to difficulties in prosthesis assembly, affecting the fixation effect of the prosthesis. Furthermore, traditional methods are prone to causing prosthesis subsidence and rotation.

Method used

A biomimetic prosthesis tension nail instrument positioning device is adopted, which includes a ball head mold, a pressure nail, and a tension nail. By setting positioning holes and guide holes on the ball head mold, a drill bit and positioning guide pin are used to provide an accurate implantation path for the tension nail, ensuring the correct installation of the prosthesis.

Benefits of technology

It improves the certainty of the placement of the tension screw prosthesis, reduces directional deviation, shortens the operation time, restores the physiological fulcrum structure of the proximal femur, and prolongs the life of the prosthesis.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to the field of medical devices, and discloses a bionic prosthesis tension nail device positioning device which comprises a ball head test mold, a pressure nail detachably connected to the ball head test mold at one end, and a tension nail penetrating the pressure nail at one end, wherein a plug hole for the tension nail to penetrate is arranged on the pressure nail; a positioning hole for providing a pre-channel for a drill bit is arranged on the ball head test mold, the axis of the positioning hole is collinear with the axis of the plug hole, and the positioning hole is a through hole. The application has the effect of effectively improving the positioning deviation caused by artificial implantation in operation, so that the tension nail cannot accurately pass through the reserved hole of the pressure nail, and the assembly effect of the prosthesis is affected.
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Citation Information

Patent Citations

  • Implanting device for femoral intertrochanteric fracture conformal nail

    CN113813037A

  • Bionic hip joint prosthesis with reserved femoral neck

    CN114699222A