CN111839522A

CN111839522A - Method for preparing biological filling material by computer-aided manufacturing

Info

Publication number: CN111839522A
Application number: CN202010122223.0A
Authority: CN
Inventors: 陈蕾; 祁少海
Original assignee: First Affiliated Hospital of Sun Yat Sen University
Current assignee: First Affiliated Hospital of Sun Yat Sen University
Priority date: 2020-02-27
Filing date: 2020-02-27
Publication date: 2020-10-30

Abstract

The experimental design mainly aims at local defects caused by burning of symmetrical parts of a human body, wound surface data are obtained through three-dimensional scanning, a three-dimensional structure of a defect tissue is reconstructed after the three-dimensional structure is processed by a computer, burn surface data are obtained through retreatment, and a biological filling material matched with the wound surface is produced according to the data so as to achieve restoration close to an original state.

Description

Method for preparing biological filling material by computer-aided manufacturing

Technical Field

The invention relates to the field of medical measurement, in particular to a method for measuring a burn wound surface by computer assistance.

Background

Orthopedic trauma surgery, in addition to focusing on the recovery of severely damaged tissue, is increasingly focusing on the aesthetic balance and symmetry of tissue repair, allowing the survivors of the trauma to truly return to normal social life, which requires the definition of anatomical levels of malformed or defective tissue resulting from congenital or acquired, the precise units of prefabricated repair tissue, the good reconstruction of sensation and motion, and the appropriate cosmetic modification.

For many years, cosmetic plastic repair surgery has been estimated largely by experience, so that concerns about poor surgical results have often occurred. At present, the number of patients requiring repair of local tissue malformation and defects after trauma, burn and tumor operations in the medical field is increasing, and the correction and repair of high-difficulty congenital malformation and tissue defects need to provide a correction module which is designed before an operation, displayed after the operation and rapidly quantized, so that the blind operation of doctors is avoided, and the operation time is shortened. Manual measurement of the wound surface of a patient has the problems of difficult operation due to human factors, uneven measurement surface and the like, and results are time-consuming, labor-consuming and inaccurate. In order to solve the practical problems, it is an urgent matter to establish scientific quantitative indexes and collect the wound data of the patient before and after the operation to guide the clinical application.

Disclosure of Invention

The advent of computer vision technology has created a hope for solving the above problems, and the introduction of three-dimensional measurement is another breakthrough in morphologically accurate measurement and analysis, which can perform measurement and analysis of various angles of a measurement object in real time, and obtain data with high accuracy and repeatability. The appearance of three-dimensional images makes preoperative "perfect" simulation of the operator and the subject possible. The accurate three-dimensional reconstruction image can deepen people to know the tissue morphological structure on a three-dimensional layer, so that the tissue adjacent relation and the three-dimensional morphology can be accurately and completely displayed, and the aging can be quantified according to a time axis. Therefore, the simulation preoperative design and the real postoperative effect evaluation are improved step by step along with the appearance of a three-dimensional scanner and a rapid prototyping system. The clinician is helped in diagnosis and treatment.

The method comprises the following specific steps:

step 1, measuring and analyzing a normal organization structure, and importing scanning (OBJ format) data into Geomagic studio software, as shown in figure 1;

step 2, measuring defects and reconstructing computer-aided contours, selecting required patch data, and deleting other irrelevant data, as shown in FIG. 2;

step 3, auxiliary manufacturing, smoothing the boundary of the surface patch, and thickening according to requirements, as shown in fig. 3;

and 4, combining the tissue biomechanical analysis, and storing the thickened entity data into an STL format or an OBJ format. The data is then imported into Materialise Magics software, see fig. 4-5.

Drawings

FIG. 1: importing scanning (OBJ format) data into Geomagic studio software;

FIG. 2: selecting required patch data, and deleting other irrelevant data;

FIG. 3: smoothing the boundary of the patch, and thickening according to requirements;

FIG. 4: storing the thickened entity data into STL format or OBJ format, and importing the data into Materialise Magics software

FIG. 5: finished product

From the above, the computer-aided burn wound measurement method of the invention can greatly improve the measurement accuracy of the burn wound, correspondingly improve the accuracy of diagnosis and treatment, enhance the treatment efficiency, and simultaneously have the advantages of reducing treatment caused by medical errors, improving the treatment quality and the like.

Claims

1. A preparation method of the biological filling material comprises the following steps: the method is characterized in that:

step 1, measuring and analyzing a normal organization structure, and importing scanning (OBJ format) data into Geomagic studio software;

step 2, measuring defects and reconstructing computer-aided contours, selecting required patch data, and deleting other irrelevant data;

step 3, auxiliary manufacturing, smoothing the boundary of the surface patch and thickening according to requirements;

and 4, combining the tissue biomechanical analysis, and storing the thickened entity data into an STL format or an OBJ format. And importing the data into Materialise Magics software.