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Woven artificial trachea and preparation method thereof

An artificial trachea and tube blank technology, which is applied to the device, fabric, textile and other directions of the human body tubular structure, can solve the problems of unfavorable helical protrusions, difficulty in fixing elastic filaments, and difficulty in radial support force meeting application requirements, etc. The effect of improving airtightness, improving radial support performance, and simplifying the finishing process

Inactive Publication Date: 2011-02-16
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Ordinary woven artificial trachea have good axial tensile breaking strength and tightness, but the radial support force is difficult to meet the application requirements
The radial support force of the artificial trachea can be greatly improved by fixing a helical elastic filament on the outside of the ordinary woven artificial trachea, but it is difficult to fix the elastic filament, and the filament and its fixed suture It will also produce spiral protrusions on the inner wall of the artificial trachea that are not conducive to smooth flow

Method used

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  • Woven artificial trachea and preparation method thereof
  • Woven artificial trachea and preparation method thereof
  • Woven artificial trachea and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The invention includes the design of the tube blank and the penetration of the elastic filament. Firstly, the weaving process of the tube blank is introduced. The yarn of the tube blank is made of 90D / 36f polyester multifilament; the weave adopts a double-layer tubular weave whose basic weave is 2 / 1 right twill. Surface longitude: internal longitude = 1:1; surface latitude: internal latitude = 1:1. The weaving parameters are shown in the table below (Table 1).

[0029] Table 1 weaving parameters

[0030] Warp density × weft density (root / 10cm)

[0031] Weaving organization chart see image 3 . The prepared tube blank forms a spiral space with equal width and parallel to each other, that is, a spiral cavity, between the inner and outer walls. According to the different radial support force requirements of the trachea, a medical wire with a diameter of 0.18mm is selected as the elastic filament, and each cavity is penetrated, one cavity is spaced apart, and...

Embodiment 2

[0033] The raw material of the tube blank: the inner wall is made of 90D / 36f polyester multifilament, and the outer wall is made of polypropylene monofilament with a diameter of 0.23mm; structure: the basic structure is double-layer tubular structure with 4 / 2 right twill. Surface longitude: internal longitude = 1:1; surface latitude: internal latitude = 1:1. The weaving parameters are shown in the table below (Table 2).

[0034] Table 2 weaving parameters

[0035] Warp density × weft density (root / 10cm)

[0036] Weaving organization chart see Figure 4 . The prepared tube blank forms a spiral space with equal width and parallel to each other, that is, a spiral cavity, between the inner and outer walls. According to the different radial support force requirements of the trachea, polyester monofilament with a diameter of 0.3mm is selected as the elastic filament, and each cavity is penetrated, one cavity is spaced apart, and two cavities are spaced apart. , to make...

Embodiment 3

[0038] The raw material of the tube blank: the inner wall is made of PLA multifilament with a fineness of 180D, and the outer wall is made of PDS monofilament with a diameter of 0.23mm; structure: the basic structure is a double-layer tubular structure with 3 / 1 right twill. Surface longitude: internal longitude = 1:2; surface latitude: internal latitude = 1:2. The weaving parameters are shown in the table below (Table 3).

[0039] Table 3 weaving parameters

[0040] Warp density × weft density (root / 10cm)

[0041] Weaving organization chart see Figure 5 . The prepared tube blank forms a spiral space with equal width and parallel to each other, that is, a spiral cavity, between the inner and outer walls. According to the different radial support force requirements of the trachea, the medical polypropylene monofilament with a diameter of 0.18mm is selected as the elastic filament, which is penetrated into each cavity, one cavity apart, and two cavities apart. way,...

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Abstract

The invention relates to a woven artificial trachea and a preparation method thereof, the woven artificial trachea comprises a tube blank and elastic filaments, the tube wall structure of the tube blank is a two-layer woven structure which comprises an inner wall structure and an outer wall structure, a spiral cavity is formed between the inner wall and the outer wall by using a tying and a separating organizational structure at an interval along the axial direction of the tube blank, and then the elastic filaments are inserted into the spiral cavity; and the preparation comprises the following steps: adopting multifilaments and / or single filaments as raw materials, adopting a double-layer tubular organization constituted by a base organization with not more than 6 warp threads according to different motion rules in organization cycles, using the tying and the separating organization at the interval along the axial direction, weaving the tube blank which forms the spiral cavity between the inner wall and the outer wall and penetrating the elastic filaments into the spiral cavity. The woven artificial trachea can improve the radial support performance of the woven artificial trachea, increase the closeness, lead the post-finishing process step to be simple, lead the inner wall to be smooth and be conductive to discharge wastes in the trachea; and the preparation method is simple and applicable to industrial production.

Description

technical field [0001] The invention belongs to the field of artificial trachea and its preparation, in particular to a woven artificial trachea and its preparation method. Background technique [0002] The axial tensile breaking strength and airtightness of common woven artificial trachea are good, but the radial supporting force is difficult to meet the application requirements. The radial support force of the artificial trachea can be greatly improved by fixing a spiral elastic filament on the outside of the ordinary woven artificial trachea, but it is difficult to fix the elastic filament. Also can produce the helical protrusion that is unfavorable for unobstructed on the inner wall of artificial trachea. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a woven artificial trachea and its preparation method. The woven artificial trachea improves the radial support performance of the woven artificial trachea, i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D03D3/02D03D1/00A61F2/04D03D15/00D03D13/00D03D15/283D03D15/56
Inventor 李毓陵李倩王文祖杨夫全王云云
Owner DONGHUA UNIV
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