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A kind of artificial finger joint prosthesis preparation method

A joint and finger technology, applied in the field of artificial finger joint prosthesis, to reduce the cost of prosthesis manufacturing and meet the needs of patients

Active Publication Date: 2019-04-30
SOUTHERN MEDICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention overcomes the shortcomings in the prior art and provides a method for preparing an artificial finger joint prosthesis, aiming at the demand for artificial finger joint prosthesis replacement for patients with clinical finger joint movement disorders, and realizing a personalized artificial finger joint prosthesis Preparation, the intramedullary stem of the prosthesis is designed based on the shape of the bone medullary cavity of the finger, and the joint head is based on the anatomical shape of the finger joint head, which is more in line with the anatomical prosthesis design and functional requirements

Method used

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  • A kind of artificial finger joint prosthesis preparation method
  • A kind of artificial finger joint prosthesis preparation method
  • A kind of artificial finger joint prosthesis preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0038] A method for preparing an artificial finger joint prosthesis, comprising the steps of:

[0039] (1) The patient undergoes CT scanning of both hands to obtain high-precision CT scanning data;

[0040] (2) Import the scanning data into the three-dimensional reconstruction software Mimics, set the corresponding threshold, and obtain the first three-dimensional reconstruction model covering the metacarpophalangeal bone marrow cavity;

[0041] (3) Set the threshold again to obtain the second three-dimensional reconstruction model that only includes the bone part of the metacarpophalangine. Under this threshold, there is no filling in the medullary cavity;

[0042] (4) Select the Boolean operation function in the software, and perform Boolean subtraction operation on the first three-dimensional reconstruction model and the second three-dimensional reconstruction model to obtain the first metacarpal bone marrow cavity morphological model;

[0043] (5) Select the software mode...

Embodiment 2

[0054] The preparation method of the artificial finger joint prosthesis of this embodiment will be described by taking the preparation process of the third metacarpophalangeal joint intramedullary stem.

[0055] A method for preparing an artificial finger joint prosthesis, comprising the steps of:

[0056] (1) Acquisition of high-precision scanning data of both hands CT;

[0057] (2) Use the 3D reconstruction software Mimics 13.01 to carry out 3D reconstruction and perform Boolean operations to obtain the morphological model of the metacarpophalangeal bone marrow cavity, as shown in figure 1 shown.

[0058] (3) Import the shape model of the intramedullary cavity into the Geomagic Studio software to repair the shape of the model, such as figure 2 shown.

[0059] (4) if image 3 As shown, the head and handle of the finger joint prosthesis are designed separately, the prosthesis head is designed according to the shape of the metacarpophalangeal joint head, and the intramedul...

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Abstract

The invention provides a preparation method of an artificial finger joint prosthesis. The preparation method comprises the following steps: carrying out hand CT (Computerized Tomography) scanning on a patient; importing CT scanning data into three-dimensional reconstruction software Mimics to obtain a first three-dimensional reconstruction model covering a bone marrow cavity of a palm finger; carrying out Boolean subtraction operation on the first three-dimensional reconstruction model and a second three-dimensional reconstruction model to obtain a first palm finger bone marrow cavity shape model; selecting a model separation function of the three-dimensional reconstruction software Mimics to obtain a second palm finger bone marrow cavity shape model; separately designing a head and a stem part of the finger joint prosthesis; designing an intramedullary stem according to a marrow cavity shape; carrying out prosthesis head design according to a palm finger bone joint head shape; carrying out 3D (Three Dimensional) printing on a designed intramedullary stem prosthesis and then scanning; and printing a designed individualized finger prosthesis model. The finger joint prosthesis prepared by the method provided by the invention has individualized manufacturing advantages; and the intramedullary stem shape is matched with the marrow cavity shape, and the head of the joint prosthesis is close to a normal joint shape, so that the requirements of patients can be met to the greatest extent, and the prosthesis manufacturing cost is reduced.

Description

technical field [0001] The invention relates to the technical field of artificial finger joint prosthesis, in particular to a method for preparing an artificial finger joint prosthesis. Background technique [0002] A variety of diseases or trauma can lead to chronic pain, deformity or movement disorder of the finger joints. With the occurrence, progression and outcome of such diseases, the movement of the finger joints will be affected to varying degrees, eventually leading to finger joint dysfunction and affecting normal Life. Among them, as the ultimate means for the treatment of various finger joint movement disorders: artificial finger joint replacement, this technology can reconstruct the motion function of finger joints, restore the stability of finger joints and correct finger joint deformities, and significantly relieve the pain while improving the appearance of finger joints. Pain in patients, which has been carried out for more than half a century and is widely a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/42B33Y50/00B33Y70/00B33Y10/00
CPCA61F2/4241A61F2002/4243B33Y10/00B33Y50/00B33Y70/00
Inventor 黄文华许靖
Owner SOUTHERN MEDICAL UNIVERSITY
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