Carbon fiber C-ring tracheal stent and preparation method thereof

Abstract

The invention discloses a carbon fiber C-ring tracheal stent and a preparation method thereof. According to the method, carbon fiber bundles are woven into carbon fiber woven strips, then the carbon fiber woven strips are sequentially subjected to mold auxiliary baking shaping, medium ultrasonic treatment and DLC or F-DLC coating deposition, and the carbon fiber C-ring tracheal stent is obtained. The carbon fiber C-ring tracheal stent has good mechanical properties, the surface layer contains F active atoms, the biocompatibility is better, the surface layer is high in hardness, small in friction coefficient and not prone to being damaged, the carbon fiber C-ring tracheal stent has elastic modulus similar to cartilage, when the carbon fiber C-ring tracheal stent is connected with a tracheal port, the biomechanical property goodness of fit is high, biological fixation can be achieved, especially, the tracheal stent is similar to a tracheal cartilage ring structure, through a C-shaped opening, the tracheal stent can be contracted and extended in a breathing process, and requirements of physiological functions are met.

Description

technical field [0001] The invention relates to an artificial trachea stent, in particular to a C-ring trachea stent made of carbon fiber materials, which belongs to the technical field of biological materials. Background technique [0002] Clinically, it has become an inevitable trend to use artificial materials for reconstruction of long trachea caused by tumor and trauma. However, due to the complexity of the trachea tissue environment, there are many requirements for substitutes, which pose many challenges to artificial trachea materials, such as the inability to achieve biological fusion and fixation with the body when transplanted in the body, and improper connection of the port with accompanying shedding, leakage, stenosis or Infarction, etc., recovery of tracheal dilation and systolic function during breathing. [0003] In the prior art, Chinese patent (CN 100428919 C) discloses an artificial trachea, which uses a polytetrafluoroethylene porous trachea prosthesis as...

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Problems solved by technology

[0004] Aiming at the defects of the artificial tracheal stents in the prior art, the purpose of the present invention is to provide a carbon fiber C-ring tracheal stent, the main body of which is made of carbon fiber material, has good mechanical properties, and the surface layer contains F active atom biophase It has better capacity, high surface hardness, low friction coefficient, and is not easy to be damaged. The carbon fiber C-ring tracheal stent has a similar elastic modulus to cartilage. Scientifically fixed, especially its structure similar to the cartilage ring of the trachea, through the C-shaped opening, it can be retracted or expanded during breathing to meet the physiological function

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