Trachea expansion device and preparation method therefor

Abstract

The embodiment of the invention provides a trachea expansion device and a preparation method therefor. The device comprises a body and a traction wire; the body is of a C-shaped structure and is provided with a hole; one end of the traction wire penetrates through and is fixed in the hole; and the body is configured to be arranged on the periphery of a trachea in a surrounding mode, the other end of the traction wire is fixed to an outer membrane of the trachea, and the body applies outwards-expanding traction force to the outer membrane through the traction wire. According to the trachea dilation device and the preparation method therefor, the body is fixed to the periphery of the trachea through the traction wire and surrounds the trachea, one end of the traction wire is fixed to the outer membrane of the trachea, the other end of the traction wire penetrates through and is fixed to the hole, and the body can apply outward dilation traction force to the trachea through the traction wire, so that outward expansion and fixation of the trachea are realized; and due to the fact that one end of the traction wire is fixed to the outer membrane of the trachea, the inner diameter of the trachea can be increased under the condition that the inner membrane of the trachea is not damaged, and expansion of the trachea is achieved.

Description

technical field [0001] The present disclosure relates to the field of medical devices, in particular, to a tracheal dilation device and a preparation method thereof. Background technique [0002] Congenital Heart Disease (CHD) is one of the most common congenital malformations in children, with a statistical incidence of 5-8 per thousand worldwide. With the continuous improvement of prenatal diagnosis, intensive care level and pediatric cardiac surgery technology, the incidence of complications and mortality related to CHD have been well controlled, and CHD is no longer regarded as a fatal disease. However, when children with CHD are combined with primary trachea stenosis (CTS) or tracheomalacia (TM), the mortality rate and complication rate of CHD treatment will increase significantly, seriously affecting the health of the newborn population. quality, increasing the national medical burden. The treatment of CTS and TM combined with congenital heart disease has always been...

AI Technical Summary

Problems solved by technology

Although the grid structure of the metal stent has the advantages of not affecting the movement of tracheal cilia, large diameter, thin tube wall, and not easily displaced, it is very easy to form granulation tissue to block the airway, easily invade the bronchial wall and be difficult to remove, and is easy to break and cause tracheal fistula

Tracheal stents made of plastic and silicone are the most widely used. They have good tissue compatibility and are not easy to grow granulation tissue. However, the types of stents available are limited (large stents are often required), and they are easy to deform and shift, affect the movement of cilia, and are easy to block

At present, after the application of composite materials, the proliferation of tracheal granulation tissue is less, and the cilia activity is less affected, but this kind of scaffold has high requirements for equipment, and it cannot be applied to young infants for the time being; while the degradable scaffold is easy to curl, and the support time is limited (about 6-7 weeks) ), and it is easy to block the airway after degradation

[0004] Tracheal exclusion surgery cannot completely improve tracheal stenosis, and there is a high possibility of repeated lung infection, hypoxemia, and inability to leave the ventilator after surgery

For children with tracheal compression or severe tracheomalacia, conservative treatment of tracheal exclusion will significantly increase postoperative complications, ventilator use time, and mortality

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