Biodegradable zinc alloy bone plate

By incorporating an adjustment mechanism consisting of a worm gear, an arc-shaped block, and a drive unit on the bone plate, the applied pressure is made perpendicular to the fracture surface of the bone. This solves the problem that the direction and amount of pressure applied by existing bone plates are not adjustable, thus achieving stable fixation of the fracture and reducing the risk of injury.

CN121465710BActive Publication Date: 2026-05-22WEITAN (DALIAN) BIOMATERIALS CO LTD
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Patent Information

Application Number
CN202511791649.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-12-01
Publication Date
2026-05-22
Estimated Expiration
2045-12-01

AI Technical Summary

Technical Problem

The direction and amount of pressure applied to the bone by existing bone plates cannot be adjusted, which may cause secondary bone damage and unstable connection during the fracture healing process.

Method used

A biodegradable zinc alloy bone plate was designed, which connects to the bone through multiple locking screws and pressure screws. An adjustment mechanism consisting of a worm gear, an arc block, and a drive unit is used to make the plane connecting the centers of the locking hole and the sliding hole perpendicular to the direction of bone fracture, so that the pressure is perpendicular to the bone fracture surface.

Benefits of technology

It provides optimized mechanical fixation, reduces adverse stress on the bone and the risk of potential damage, adapts to different bone densities and fracture surface orientations, and promotes stable fracture alignment and healing.

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Abstract

The application relates to the technical field of medical devices, in particular to a biodegradable zinc alloy bone plate. The biodegradable zinc alloy bone plate connects two fractured bone parts through locking screws and pressure screws, and comprises a bone plate and adjusting mechanisms; each adjusting mechanism comprises a worm wheel, an arc-shaped block and a first driving unit. A locking hole and a sliding hole are formed in each worm wheel. Each pressure screw is arranged in a sliding hole and is in contact with the inner side wall of the arc-shaped block. The first driving unit is used for driving the worm wheel to rotate, so that the plane where the connecting line of the centers of the locking hole and the sliding hole is located is kept perpendicular to the plane where the fracture extension direction of the bone is located, and when the pressure screw and the arc-shaped block cooperate, the pressure generated by the cooperation is perpendicular to the plane where the fracture extension direction of the bone is located, so that the biodegradable zinc alloy bone plate can adapt to various fracture surface directions. The application provides the biodegradable zinc alloy bone plate to solve the problem that the pressure direction of the existing bone plate on the bone is not adjustable.
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