Preparation method of tissue model with cavity structure and tissue model

Abstract

The invention relates to a preparation method of a tissue model with a cavity structure and the issue model. The method comprises the following steps: as for a target tissue with a cavity structure, acquiring a first three-dimensional geometric model having the same contour shape and size with a tissue; shrinking the first three-dimensional geometric model in the radial direction according to the wall thickness of the tissue, so as to obtain a second three-dimensional geometric model; manufacturing a bracket according to the second three-dimensional geometric model; coating a material used for manufacturing the tissue model on the surface of the bracket according to the wall thickness of the tissue; removing the bracket after the material is solidified, and obtaining the tissue model with the cavity structure. The high-precision tissue model, of which the size is close to that of the real tissue, is obtained for the tissue with the cavity structure through size design; as the tissue model is obtained through coating, the material of the tissue model is not limited by a consumable item of a traditional 3D printer, and the purpose of preparing the tissue model by choosing any proper material is fulfilled.

Description

technical field [0001] The invention relates to the field of medical appliances, in particular to a method for preparing a tissue model with a cavity structure and the tissue model. Background technique [0002] Microsurgery is one of the main treatment methods for tissue lesions in the body in recent years, especially for the treatment of tumors (such as aneurysms). Aneurysm is a manifestation of localized or diffuse expansion or bulging of the arterial wall due to lesion or injury of the arterial wall. The main manifestation is an expansive and pulsating mass, which can occur in any part of the arterial system. Clinically, aneurysm clipping is often used for aneurysm disease. Currently, there are various specifications of aneurysm clips used in aneurysm clipping to meet clinical needs. During the operation, the doctor can adjust the size and shape of the aneurysm according to the size and shape of the aneurysm. Aneurysm clips are selected, but this selection process is no...

AI Technical Summary

Problems solved by technology

3D printing has good accuracy, but due to the limitation of the preparation materials by the consumables of 3D printers, the texture of the actual printed tissue model is relatively hard, and there is a large gap between the tactile feeling and the effect of aneurysm clipping drill and the real aneurysm. difference

However, in the preparation process, if the tissue is 3D reconstructed according to the existing technology and then printed directly, the final tissue model will have a large error in size from the real tissue, which will affect the doctor's clinical understanding of the aneurysm. Judgment and selection of aneurysm clips, which increases the risk of surgery

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