Carbon fiber C-ring tracheal stent and preparation method thereof

A tracheal stent and carbon fiber prefabricated technology, applied in the field of C-ring tracheal stent and artificial tracheal stent, can solve the problems of small friction coefficient and high surface hardness, and achieve the effect of small friction coefficient, excellent mechanical properties, and biological fixation.

Active Publication Date: 2021-05-07
HUNAN TANKANG BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • Carbon fiber C-ring tracheal stent and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0052] The preparation method of carbon fiber C-ring tracheal stent comprises the following specific steps:

[0053] 1) Twist the carbon fiber bundles into carbon fiber ropes, select 3 bundles of 1.5k carbon fibers and twist them into ropes, and the diameter of the carbon fiber ropes is 0.1mm; among them, the carbon fiber bundles are not treated with resin removal, and the epoxy resin on the surface accounts for 10% of the carbon fiber mass. 0.8%.

[0054] 2) Weave 12 carbon fiber ropes into carbon fiber braided strips with a width of 8mm and a thickness of 0.8mm.

[0055] 3) The carbon fiber braided strip is heated, baked and shaped with the aid of the mold. During the baking process, the carbon fiber braided strip is vertically applied pressure along the plane, and a steel needle (a steel needle with a tapered head) is inserted into the surface of the carbon fiber braided strip to set a preset value. Leave holes to obtain the carbon fiber strip prefabricated body; the reser...

Embodiment 2

[0062] The preparation method of carbon fiber C-ring tracheal stent comprises the following concrete steps:

[0063] 1) Twist the carbon fiber bundles into carbon fiber ropes, select 3 bundles of 1.5k carbon fibers and twist them into ropes, and the diameter of the carbon fiber ropes is 0.1mm; among them, the carbon fiber bundles are not treated with resin removal, and the epoxy resin on the surface accounts for 10% of the carbon fiber mass. 0.8%.

[0064] 2) Weave 12 carbon fiber ropes into carbon fiber braided strips with a width of 8mm and a thickness of 0.8mm.

[0065] 3) The carbon fiber braided strip is heated, baked and shaped with the help of a mold, and a tensile force is applied to the carbon fiber braided strip in the axial direction during the baking process, and a steel needle (a steel needle with a tapered head) is inserted into the surface of the carbon fiber braided strip to set a preset value. Leave holes to obtain the prefabricated carbon fiber strip; the re...

Embodiment 3

[0072] The preparation method of carbon fiber C-ring tracheal stent comprises the following concrete steps:

[0073] 1) Twist the carbon fiber bundles into carbon fiber ropes, select 3 bundles of 1.5k carbon fibers and twist them into ropes, and the diameter of the carbon fiber ropes is 0.1mm; among them, the carbon fiber bundles are not treated with resin removal, and the epoxy resin on the surface accounts for 10% of the carbon fiber mass. 0.8%.

[0074] 2) Weave 12 carbon fiber ropes into carbon fiber braided strips with a width of 8mm and a thickness of 0.8mm.

[0075] 3) The carbon fiber braided strip is heated, baked and shaped by the aid of the mold. During the baking process, the carbon fiber braided strip is simultaneously applied with tension along the axial direction and vertical pressure along the plane, and a steel needle (the head is a cone) is inserted on the surface of the carbon fiber braided strip. shaped steel needle) to set reserved holes to obtain a carbo...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/06B29C70/30B29C70/54
CPCB29C70/06B29C70/30B29C70/54
Inventor 谭周建张翔刘波王斌蔡志霞
Owner HUNAN TANKANG BIOTECH CO LTD
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