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Method and apparatus for designing acetabulum back-wall back-column bone fracture internally fixing system

A fixation device and fixation system technology, applied in the field of medical devices, can solve the problems of acetabular posterior wall edge fracture, poor fixation strength, multiple pre-bending, etc., and achieve the effects of precise forming, stable structure, and prevention of failure.

Inactive Publication Date: 2017-05-10
THE FIRST AFFILIATED HOSPITAL OF CHONGQING MEDICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But all have their limitations, such as poor fixation strength, poor compliance, multiple pre-bends, and difficulty in fixing fractures of the posterior wall of the acetabulum.

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  • Method and apparatus for designing acetabulum back-wall back-column bone fracture internally fixing system
  • Method and apparatus for designing acetabulum back-wall back-column bone fracture internally fixing system
  • Method and apparatus for designing acetabulum back-wall back-column bone fracture internally fixing system

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Embodiment Construction

[0043] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so that the protection scope of the present invention can be more clearly defined.

[0044] A design method for the internal fixation system of the posterior column of the acetabulum adopts the following steps:

[0045] Step 1: Select 100 complete pelvic CT data of male and female adults, of which the average age of male is 48.5 years, the average age of female is 50.8 years, and the pelvic and acetabular fractures, tumors and other diseases are discharged, and the three-dimensional model of pelvis is reconstructed by computer , In this embodiment, 3D reconstruction is performed by importing Mimics software;

[0046] Step 2: Measure and obtain the arc length value AB from the highest point A to the lowest point B of the acetabula...

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Abstract

The invention provides a method and an apparatus for designing acetabulum back-wall back-column bone fracture internally fixing system. The method comprises the following steps: choosing a proper amount of pelvis CT data for three-dimensional modeling; measuring the arc length of each acetabulum from its highest point to the lowest point; using the pelvis with an arc length close to the average arc length of the acetabulums as a standard pelvis; converting the standard pelvis into a point cloud file; conducting triangle gridding to the point cloud file; and using the reverse engineering technique to simulate surface anatomical morphology of the acetabulum back-wall back-column; and according to the characteristics of an acetabulum back-wall back-column bone fracture in clinics, designing two steel plates of different shapes with one suitable for high-level acetabulum back-wall back-column bone fractures and the other for non-high-level acetabulum back-wall back-column bone fractures. The main parts of the steel plates are big in size and have a plurality of screw holes so that a patient could choose the suitable screw holes for bone fracture fixation after a surgery. The locking screw holes at the outer sides of the steel plates are small in diameter and vary in direction so that small bone fracture blocks at the edges could be fixed conveniently.

Description

Technical field [0001] The invention relates to the field of medical equipment, in particular to a design method and device for an internal fixation system for fractures of the posterior wall and posterior column of the acetabulum. Background technique [0002] The main internal fixation methods for posterior column fractures of the acetabulum include screw fixation, reconstruction plate combined with lag screw fixation, single plate and double plate fixation, and acetabular three-dimensional memory internal fixation system. But all have their limitations, such as poor fixation strength, poor compliance, need for multiple pre-bending, and difficult fixation of acetabular posterior wall edge fractures. Therefore, there is a need to provide a new internal fixation system for fractures of the posterior column of the acetabulum. Summary of the invention [0003] Aiming at the deficiencies of the prior art, the present invention proposes a design method and device for an internal fixa...

Claims

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Application Information

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IPC IPC(8): G06T17/00G06F17/50A61B17/80
CPCA61B17/8061A61B2017/564G06F30/20G06T17/00
Inventor 高仕长
Owner THE FIRST AFFILIATED HOSPITAL OF CHONGQING MEDICAL UNIV
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