Composite artificial stent for total auricle reconstruction and preparation method of composite artificial stent

Abstract

The invention discloses a composite artificial stent for all auricle reconstruction. The composite artificial stent comprises a stent and a silica gel body, the stent comprises an auricle bulge and a metal body, and the metal body is composed of a plurality of groups of metal strips in different directions. The composite artificial stent is made of the memory alloy, a layer of silica gel body is poured on the outer surface of the composite artificial stent, the elasticity of the composite artificial stent is improved, meanwhile, the compatibility of the composite artificial stent and the human body is better, and the composite artificial stent can be produced in batches. The composite artificial stent is provided with structures similar to auricle helixes, helix feet, antihelixes and the like. The shape and the size of the auricle stent are set according to the shape and the size of the normal adult auricle obtained through big data, the size layering code number is set, so that the artificial auricle stent is closer to the structure of a real auricle, the number can be directly selected for use, one-by-one customization by using a 3D technology according to the data of each patient is not needed, the costal cartilage does not need to be cut out through a thoracic operation, more convenience and rapidness are achieved, the operation and manufacturing time and the equipment cost are reduced, and meanwhile, the pain of the patient is relieved, and various costs are reduced.

Description

technical field [0001] The invention belongs to the technical field of human body bioengineering, and specifically relates to a composite material artificial support for total auricle reconstruction and a preparation method thereof. Background technique [0002] The surgical treatment of congenital microtia is total auricle reconstruction. The normal auricle is composed of thin skin and soft tissue wrapped with elastic cartilage support. It has an elastic thin shell structure and is composed of helix, antihelix, tragus, opposite The tragus, earlobe, concha, triangular fossa, scaphoid fossa, etc. are composed of concavities, concavities, and complex shapes. Therefore, auricle reconstruction is a difficult and complicated operation. One of the main surgical methods currently used in clinical practice is to intercept part of the patient's ribs. The cartilage is spliced ​​and sculpted to form the cartilage shape of the auricle, and the auricle reconstruction is performed in stag...

AI Technical Summary

Problems solved by technology

[0005] 1. In the prior art, the shape, hardness, and elasticity of the reconstructed auricle cartilage scaffold have a particularly large impact on the surgical effect. At the same time, taking the costal cartilage itself will cause a large trauma to the patient, and the loss of the leftover costal cartilage after surgery may be accompanied by sequelae and Complications, which will cause inconvenience to the patient's future life

[0006] 2. The length, shape, and thickness of the costal cartilage used for auricle reconstruction vary greatly. The carving of the costal cartilage is a test of the surgeon's aesthetics and knife skills. The operation is difficult and takes a long time. Due to the loss of multiple costal cartilages, most patients give up ear reconstruction because they do not want to take costal cartilage. In view of this, we propose a composite material artificial scaffold to replace the auricular cartilage scaffold carved from autologous costal cartilage

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