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Two-layer warp-knitted tissue textile-type artificial blood vessel

A warp-knitted tissue, artificial blood vessel technology, applied in the direction of catheters, etc., can solve problems such as blood oozing of the tube wall

Inactive Publication Date: 2007-11-14
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a double-layer warp-knitted textile artificial blood vessel to solve the problem in the prior art of preventing blood vessel wall leakage during surgery. A defect that cannot be achieved simultaneously with blood and without affecting the smooth growth of cells and tissues

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Two-layer warp-knitted tissue textile-type artificial blood vessel
  • Two-layer warp-knitted tissue textile-type artificial blood vessel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The outer warp knitting structure is warp weave, see Figure 2a, using 55 dtex / 24f polyester fiber filament; the inner warp knitting structure is warp plain weave, see Figure 2b, using 110 dtex / 96f polyester fiber filament .

[0020] The tubular fabric is woven on a double-needle bed warp knitting machine with a longitudinal density of 15 threads / cm and a transverse density of 10 threads / cm. For the front-combed warp weave, see Figure 3 for the law of laying yarn; for the back-combed warp weave, see Figure 4 for the law of laying yarn.

[0021] The manufactured double-layer warp-knitted textile artificial blood vessel has a sparse outer structure and a water permeability of 1100ml / cm 2 ·min·16kPa; the inner structure is tight, and the water seepage is 280ml / cm 2 · min · 16kPa.

Embodiment 2

[0023] The warp knitting structure of the outer layer is warp weave, see Figure 2a, using polyester fiber filaments of 55dtex / 24f; the warp knitting structure of the inner layer is plain weave, see Figure 2b, using polyester fiber filaments of 110dtex / 96f.

[0024] The tubular fabric is woven on a double-needle bed warp knitting machine with a longitudinal density of 15 threads / cm and a transverse density of 10 threads / cm. For the front-combed warp weave, see Figure 3 for the law of laying yarn; for the back-combed warp weave, see Figure 4 for the law of laying yarn.

[0025] The manufactured double-layer warp-knitted textile artificial blood vessel has a sparse outer structure and a water permeability of 1200ml / cm 2 ·min·16kPa; the inner structure is tight, and the water seepage is 290ml / cm 2 · min · 16kPa.

Embodiment 3

[0027] The warp knitting structure of the outer layer is warp weave, see Figure 2a, using polyester fiber filaments of 55dtex / 24f; the warp knitting structure of the inner layer is plain weave, see Figure 2b, using polyester fiber filaments of 110dtex / 96f.

[0028] The tubular fabric is woven on a double-needle bed warp knitting machine with a longitudinal density of 15 threads / cm and a transverse density of 10 threads / cm. For the front-combed warp weave, see Figure 3 for the law of laying yarn; for the back-combed warp weave, see Figure 4 for the law of laying yarn.

[0029] The manufactured double-layer warp-knitted textile artificial blood vessel has a sparse outer structure and a water permeability of 1300ml / cm 2 ·min·16kPa; the inner structure is tight, and the water seepage is 200ml / cm 2 · min · 16kPa.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The present invention relates to a textile type artificial blood vessel with double-layer warp-knitted stitch structure. It is characterized by that it includes outer layer warp-knitted structure whose water permeability is 1000-3000 ml / sq.cm.min.16kPa and inner layer warp-knitted structure whose water permeability is 250-300ml / sq.cm.min.16kPa, the outer layer warp-knitted structure of said blood vessel is cord stitch, and the inner layer warp-knitted structure of said blood vessel is tricot stitch. Said invention adopts a two-bar warp-knitted fabric to make the above-mentioned outer layer warp-knitted structure and inner layer warp-knitted structure be combined together so as to obtain the invented artificial blood vessel.

Description

technical field [0001] The invention relates to an artificial blood vessel, in particular to a textile artificial blood vessel whose pipe wall is double-layered warp-knitted tissue. Background technique [0002] In the 1950s, since the phenomenon of cells growing on silk soaked in blood was observed, the history of fabricating artificial blood vessels began. Since then, the selection of suitable fiber materials and ideal fabric structures has become the focus of artificial blood vessel research. Today, more than 50 years later, textile artificial blood vessels have been widely used in clinics to replace damaged blood vessels in the human body, and have achieved good clinical results. However, although textile artificial blood vessels have been widely used clinically, due to the function of promoting cell tissue growth and avoiding blood leakage during surgery, it is necessary to look for a textile artificial blood vessel with an ideal textile structure to obtain suitable wa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L29/06
Inventor 丁辛王文祖王璐李毓陵杨旭东
Owner DONGHUA UNIV
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