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Anti-backing bone screw assembly

An assembly and bone screw technology, which is applied in the directions of internal bone synthesis, fastening devices, outer plates, etc., can solve the problems of damage of expansion stress components and instability of elastic components, so as to prevent the screw from retreating, reduce complications, and reduce risks. Effect

Inactive Publication Date: 2020-02-28
界首泰谷工业设计有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an anti-retraction bone screw assembly for the problem that the elastic element of the existing bone screw anti-retraction device is unstable and the expansion stress member may damage the bone

Method used

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  • Anti-backing bone screw assembly
  • Anti-backing bone screw assembly
  • Anti-backing bone screw assembly

Examples

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Embodiment 1

[0024] Such as Figure 1-7 As shown in , an anti-regression bone screw assembly includes a steel plate 1, and a screw hole is provided on the steel plate 1, and the screw hole includes a columnar main groove 12, and an annular boss 11 is provided at the bottom of the columnar main groove 12 , the annular boss 11 is provided with a plurality of positioning grooves 110, the top of the columnar main groove 12 is provided with a plurality of fan-shaped protrusions 13 extending inward, the number of the fan-shaped protrusions 13 is three, The central angle of the fan-shaped protrusion 13 is 60°, which can simplify the structure and improve the stability of the clamping; the positioning groove 110 is set corresponding to the fan-shaped protrusion 13, and the upper part of the fan-shaped protrusion 13 is a cylindrical pair Groove 14, the inner wall of the columnar auxiliary groove 14 is provided with an internal thread 141; the bottom of the columnar main groove 12 is provided with a...

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Abstract

The invention belongs to the technical field of bone screws for orthopedic surgery, and particularly relates to an anti-backing bone screw assembly, which comprises a steel plate with a screw hole, ascrew body and a fitting screw; the screw hole comprises a cylindrical main groove, the bottom of the cylindrical main groove is provided with a circular boss, and the circular boss is provided with positioning notches; the screw body comprises a screw top and a cylindrical screw part, the screw top is provided with a top protrusion, the central part of the screw top is provided with a first hexagonal recess, and the center of the first hexagonal recess is provided with a cylindrical channel; The anti-backing bone screw assembly further comprises the fitting screw which comprises a cap and a shank. Compared with the prior art, the anti-backing bone screw assembly has the advantages that The steel plate with the threaded hole, the screw body and the fitting screw are provided, the screw body and the steel plate can be relatively fixed, even if a bone and a bone thread of the screw body are loosened, the screw can still be prevented from backing, fracture healing is promoted, the risk caused by osteoporosis is reduced, and the complications are reduced; the anti-backing bone screw assembly is simple and convenient to operate and is suitable for popularization.

Description

technical field [0001] The invention belongs to the technical field of bone screws for orthopedic operations, and in particular relates to an anti-regression bone screw assembly. Background technique [0002] With the rapid development of orthopedic technology, new internal fixation methods are constantly emerging. New materials and technologies not only effectively restore the stability of bones, but also reduce the damage to bone blood supply and improve the healing rate of fractures. In the technology, the bone fragments at the fracture site are usually reset and fixed by steel plates and bone nails, so that the dislocated bone fragments are reconnected tightly under the action of the plate and screw system; among them, osteoporosis patients have a high chance of fracture Cancellous bone screws, locking screws, and rod screws are generally used in surgical operations for osteoporotic fractures. However, due to poor bone quality in patients, problems such as screw loosenin...

Claims

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Application Information

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IPC IPC(8): A61B17/68A61B17/80A61B17/86
CPCA61B17/68A61B17/8057A61B17/8615A61B17/8625A61B2017/8655
Inventor 余秀芳
Owner 界首泰谷工业设计有限公司
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