Front and rear combined scoliosis correcting system through pedicle of vertebral arch

A scoliosis and pedicle technology, which is applied in the field of orthopedic internal fixation treatment devices, can solve the problems of weakened orthopedic force and loss of orthopedic effect.

Inactive Publication Date: 2004-02-25
NANJING GENERAL HOSPITAL NANJING MILLITARY COMMAND P L A
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the posterior approach, the screw runs through the three columns through the pedicle, but the orthopedic rod is placed on the posterior column. The tip of the screw often cannot fully enter the anterior column for safety, and the tip of the screw is far away from the orthopedic rod, so the orthopedic force is weakened, and the bone graft is placed in the posterior column The column is the tension side, and the growth of the anterior and middle columns after surgery may cause the loss of orthopedic effect
So far, there is no ideal anterior and posterior internal fixation correction system to solve the problem of severe scoliosis treatment

Method used

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  • Front and rear combined scoliosis correcting system through pedicle of vertebral arch
  • Front and rear combined scoliosis correcting system through pedicle of vertebral arch

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Experimental program
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Embodiment Construction

[0009] The correction system of the present invention is composed of a vertebral pedicle bolt 1 and its connecting buckle 2, a vertebral body bolt 3 and an orthopedic rod 4. The vertebral body pedicle bolt 1 is a bone thread screw structure, and its head end is a mechanical thread head 5 , its tail end is a stepped enlarged cylinder 6, which is provided with an internally threaded through hole 7 at a certain angle (usually in the range of 3-150 degrees, preferably about 50-90 degrees) with its axis, the stepped cylinder The end face of 6 is provided with positioning hole 8; Connecting buckle 2 is a special-shaped cylindrical body, and U-shaped groove 9 is opened in the middle of this cylindrical body, and the outer wall of its sealing end is connected with protruding block 10 outwardly, and this protruding block 10 There is a screw hole 11 matching the head end 5 of the mechanical thread of the vertebral pedicle bolt 1, so as to be screwed with the head end 5 of the vertebral p...

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Abstract

The scoliosis treating inner fixing orthopedic appliance consists of bolt in pedicle of vertebral arch, connecting buckle, bolt in centrum and orthopedic rod. The bolt in pedicle of vertebral arch is in bone screw structure and has mechanical thread head and expanded bylinder tail with screw hole in some angle to the cylinder axis, dpositioing hole at the end face and U-shaped groove in the middle part to match the orthopedic rod. The bolt in centrum is a straight rod with thread head and expanded back end cyliner with U-shaped groove to match the connecting buckle.

Description

technical field [0001] The invention relates to an orthopedic internal fixation treatment device for treating orthopedic scoliosis patients. Background technique [0002] There are many instruments currently used for scoliosis treatment, such as CD, TSRH, Isola, USS, Moss Miami, and the Great Wall pedicle screw system. They each have pros and cons. In patients with severe scoliosis, the vertebral structure is mostly abnormal, the vertebral body is rotated, and the posterior bony markers are unclear, which brings difficulties to posterior transpedicular fixation. The orthopedic power is weaker than that of pedicle screws when hooks are placed. At present, the treatment of severe scoliosis tends to be released anteriorly and orthopedic internal fixation posteriorly. The operation needs to be combined with anterior and posterior approaches, and it can be completed once or twice. At present, in scoliosis correction, there are mainly two types of placement of sticks, anterior...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/56
Inventor 毛广平赵建宁王与荣黎介寿陈跃先许斌
Owner NANJING GENERAL HOSPITAL NANJING MILLITARY COMMAND P L A
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