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Preparation method of ventricular septal defect patch for tetralogy of Fallot

A technology for tetralogy of Fallot and ventricular septal defect, applied in medical science, image data processing, 3D modeling, etc., can solve the problems of wasting patch materials, time-consuming, etc. Time saving and effect of patch material

Active Publication Date: 2016-07-06
WUHAN ASIA HEART HOSPITAL +1
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  • Abstract
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  • Application Information

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Problems solved by technology

Among them, the treatment of ventricular septal defect is mainly repaired by surgery. At present, the surgical repair of ventricular septal defect in patients with tetralogy of Fallot is to sew a large polyester patch prepared in advance according to the shape and size of the defect during the operation. Cutting the rest of the patch after reaching the entity, this method of making the patch is not only time-consuming, but also wastes the patch material

Method used

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Experimental program
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Embodiment 1

[0014] A method for making a ventricular septal defect patch for tetralogy of Fallot, comprising the following steps:

[0015] 1) Cardiac data collection: The patient underwent Siemens Flash dual-source spiral CT examination (Dual-source-CT, SomatomDefinition, Siemens, Forchheim), and retrospective ECG gating technology was used to collect cardiac data to ensure that there is an appropriate concentration in each chamber of the heart The filling of the iodine-containing contrast medium, especially the contrast medium concentration in the two ventricles, the contrast medium concentration in the left ventricle is generally 200-350HU, and the contrast medium concentration in the right ventricle is 150-250HU. In the process of cardiac data collection, for the selection The time to trigger CT scanning is very important. Using the automatic trigger mode with a preset threshold, the trigger region of interest is set in the descending aorta, and the threshold is set at 100HU. Among the...

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Abstract

A manufacturing method for a tetralogy of fallot VSD (ventricular septal defect) patch comprises the following steps of (1) manufacturing a three-dimensional solid model: after heart data are collected, using a postprocessing work station to perform digitalized three dimension reconstruction on original data to obtain a heart shape three dimension image, and further cutting the free wall of a right ventricles dexter with a surgical operation inlet mode to obtain a VSD three dimension image; then generating the two images into an STL (standard template library) format file by numerical control conversion; then inputting STL data into selection laser sintering molding equipment for molding and manufacturing a 1:1 three dimension solid model of a VSD heart; (2), patch manufacturing: shearing a surgical patch from the manufactured three dimension solid model according to the shape of the VSD. The VSD patch with proper shape and size is accurately shorn before the surgery by a patch molding die, the patch material and patch manufacturing time are saved, the cardiovascular deformation is reflected by the three dimension solid model in a 1:1 mode and the teaching level is favorably improved.

Description

technical field [0001] The invention relates to a manufacturing method of medical materials, in particular to a manufacturing method of a ventricular septal defect patch for tetralogy of Fallot. Background technique [0002] Tetralogy of Fallot is a combined congenital cardiac and vascular malformation, including ventricular septal defect, pulmonary artery stenosis, right aorta and right ventricular hypertrophy. Among them, the treatment of ventricular septal defect is mainly repaired by surgery. At present, the surgical repair of ventricular septal defect in patients with tetralogy of Fallot is to sew a large polyester patch prepared in advance according to the shape and size of the defect during the operation. Cutting the remaining patches after arriving at the entity, this method of making patches is not only time-consuming, but also wastes patch materials. Contents of the invention [0003] The object of the present invention is to provide a method for making a ventri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/02G06T17/00
Inventor 马小静陈鑫陶凉李炜彭志远陈艳金晶张雪莲钟志林陈险峰
Owner WUHAN ASIA HEART HOSPITAL
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