A textile artificial blood vessel with improved radial compliance

A technology for artificial blood vessels and blood vessels, applied in the field of textile artificial blood vessels, can solve the problem of not considering the compatibility of the radial compliance of the host blood vessels, and achieve the effect of maintaining dimensional stability

Inactive Publication Date: 2011-12-14
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] For textile artificial blood vessels with multi-layer wall structure, at present, the difference in parameters of the double-layer textile structure is mainly used to prevent excessive bleeding and smooth growth of blood vessels during surgery. The function of entering the cell tissue, as disclosed in Chinese patents (publication numbers are CN 101069757, CN 101069756 and CN 101066476), but does not consider the radial compliance and the compliance matching with the host blood vessel

Method used

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  • A textile artificial blood vessel with improved radial compliance
  • A textile artificial blood vessel with improved radial compliance
  • A textile artificial blood vessel with improved radial compliance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031]An artificial blood vessel with a double-layer woven structure, consisting of an outer fabric tube 1 and an inner fabric tube 2, the inner fabric tube 2 is connected in the direction of the generatrix of the outer wall, and the outer fabric tube 1 is coaxially nested in the The connection point on the inner layer fabric tube 2 and through the direction of the outer wall of the inner layer fabric tube 2 is connected with the inner layer fabric tube 2 by the binding yarn of the fabric tissue 3a or the sewing connection 3b; through the outer layer fabric tube 1 and the inner layer fabric The connection of the tubes 2 makes a non-continuous annular space exist in the inner and outer fabrics, and makes the outer fabric tube 1 cover the outer surface of the inner fabric tube 2 in a buckling shape.

[0032] Yarn: 25d PET (polyester) filament is used for the warp yarn of the inner fabric tube, and 20d PTT (1,3-trimethylene terephthalate) filament is used for the weft yarn; 25d is...

Embodiment 2

[0040] Yarn: 45d PET (polyester) filament is used for the warp yarn of the inner fabric tube, and 50d PTT (1,3-trimethylene terephthalate) filament is used for the weft yarn; 45d PET is used for the warp yarn of the outer fabric tube Filament and weft are made of 45d PET filament.

[0041] Fabric weave: Plain weave is used for the inner fabric, and plain weave is used for the outer fabric.

[0042] Fabric density: The warp density of the inner fabric is 805 threads / 10cm, and the weft density is 630 threads / 10cm. The warp density of the outer fabric is 805 threads / 10cm, and the weft density is 605 threads / 10cm.

[0043] The inner layer fabric tube and the outer layer fabric tube are connected by the binding yarn of the fabric structure 3a, see the interweaving rule figure 2 .

[0044] Tube Fabric Diameter: The diameter of the inner fabric tube is 5.4mm, and the diameter of the outer fabric tube is 6.8mm.

[0045] Circumferential tensile modulus of the fabric: the circumfer...

Embodiment 3

[0048] Yarn: 75d PET (polyester) filament is used for the warp yarn of the inner fabric tube, and 70d PTT (1,3-trimethylene terephthalate) filament is used for the weft yarn; 75d warp yarn is used for the outer fabric tube The PET filament, the weft yarn is made of 75d PET filament.

[0049] Fabric weave: Plain weave is used for the inner fabric, and 2 / 1 twill weave is used for the outer fabric.

[0050] Fabric density: the warp density of the inner fabric is 605 threads / 10cm, and the weft density is 580 threads / 10cm; the warp density of the outer fabric is 605 threads / 10cm, and the weft density is 500 threads / 10cm.

[0051] The inner layer fabric tube and the outer layer tube fabric are connected 3b by sewing.

[0052] Tube Fabric Diameter: The diameter of the inner fabric tube is 6.5mm, and the diameter of the outer fabric tube is 7.6mm.

[0053] Circumferential tensile modulus of the fabric: the circumferential tensile modulus of the inner fabric tube is 260MPa, and the c...

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Abstract

The invention relates to a textile artificial blood vessel with a tube wall of a double-layer woven structure, which is composed of an outer fabric tube (1) and an inner fabric tube (2). The outer layer fabric tube (1) is coaxially nested on the inner layer fabric tube (2) and passes through the connection point in the direction of the outer wall of the inner layer fabric tube (2) and the inner layer fabric tube (2) is formed by the binding yarn of the fabric Connection (3a) or sewing connection (3b). The invention can realize the matching with the radial compliance of the host blood vessel of the human body, which is beneficial to the recovery of human body functions and facilitates the development of blood vessel transplantation operations.

Description

technical field [0001] The invention belongs to the field of textile artificial blood vessels, in particular to a textile artificial blood vessel capable of improving radial compliance. Background technique [0002] In the 1950s, since the experimental phenomenon of cells growing on silk sutures soaked in blood was observed, the history of manufacturing textile artificial blood vessels began. Since then, the selection of suitable fiber materials and ideal fabric structure has been the focus of research on textile artificial blood vessels. After more than 50 years of development, textile artificial blood vessels have been widely used in clinics to replace damaged blood vessels in the human body, and have achieved good clinical medical effects. The wall structure of textile artificial blood vessels has developed from a single woven structure to a variety of forms such as knitting, braiding, non-woven and composite, so as to adapt to different transplantation parts of the huma...

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 Patents(China)
IPC IPC(8): A61F2/06A61L27/18
Inventor 丁辛陈莹李毓陵王璐高洁赵学谦
Owner DONGHUA UNIV
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