A woven artificial blood vessel and the manufacturing method thereof

A technology of artificial blood vessel and manufacturing method, which is applied in the directions of blood vessels, devices of human tubular structures, etc., to achieve the effects of improving the patency rate, improving the uniformity of the structure, and improving the hydrodynamic performance.

Inactive Publication Date: 2010-10-13
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a woven artificial blood vessel and its manufa

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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  • A woven artificial blood vessel and the manufacturing method thereof
  • A woven artificial blood vessel and the manufacturing method thereof
  • A woven artificial blood vessel and the manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This embodiment is suitable for woven artificial blood vessels with an inner diameter greater than 10 mm, and the warp and weft yarns used are polyester multifilaments. The basic weave used in the fabric is 2 / 1 twill weave and 6 / 30 variation through heavy flat weave. The two are compounded into oblique convex strip organization a (such as Figure 5 shown). Flip the histogram of oblique strip a according to the film flipping method to obtain the histogram of tissue b (such as Image 6 shown). Finally, the oblique-convex tissue a is used as the surface tissue of the tubular tissue, and the oblique-convex tissue b is used as the inner tissue of the tubular tissue, so that the spiral corrugated tubular tissue diagram is obtained. The artificial blood vessel with helically distributed floating long lines on the inner surface is manufactured by the machine.

[0033] Determine the size and model of the heat-setting thread mold according to the pitch between each formed obl...

Embodiment 2

[0036] Choose plain weave and 6 / 30 angle twill weave as the basic weave. The compound composition of the two changes split tissue c (such as Figure 7 Shown), as the surface organization of tubular fabric; change split organization c to get the organization diagram of organization d by negative film flipping method (such as Figure 8 shown), as the inner tissue of the tubular fabric. The artificial blood vessel with helically distributed floating long lines on the inner and outer surfaces is obtained by machine weaving.

[0037] The shaping of the artificial blood vessel requires two molds, one for shaping the floating long lines on the inner surface of the artificial blood vessel, and the other for shaping the floating long lines on the outer surface of the artificial blood vessel. The former is processed into an external thread mold, and the latter is processed into an internal thread mold. Determine the size and model of the heat-setting thread mold according to the pitch...

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 invention relates to a woven artificial blood vessel, which comprises an artificial blood vessel, which is a spiral corrugation structure having a convex part and a concave part on the inner surface, wherein the convex part and the concave part are formed by coiling long floats (1) at equal interval. The spiral distribution is an inclined corrugation structure. The method for manufacturing the woven artificial blood vessel comprises a spiral corrugation forming procedure and a spiral corrugation shaping procedure and specifically comprises the following steps: 1) performing a film flip method on the tissue including the long floats (1) to obtain a new tissue; 2) taking the tissue as the surface tissue of an artificial blood vessel and the new tissue resulting from the flip as the internal tissue of the artificial blood vessel; and 3) combining the two tissues obtaining from the step 2) into a tissue chart of the artificial blood vessel, loading the tissues onto a machine and weaving the tissues into the artificial blood vessel having a spiral surface; the spiral corrugation shaping procedure comprises loading a corresponding internal or external screw mould on the internal or external side of the artificial blood vessel and performing a thermal shaping treatment in an automatic shaping oven. The invention is capable of solving the problems caused by the corrugation treatment in existing technology, such as the short service life of the artificial blood vessel and the occurrence of thrombus.

Description

technical field [0001] The invention belongs to the field of artificial human organs, in particular to a woven artificial blood vessel and a manufacturing method thereof. Background technique [0002] Compared with knitted artificial blood vessels, woven artificial blood vessels are stiffer and less bendable. When the artificial blood vessel is bent, it is very easy to block the blood vessel, thus increasing the possibility of thrombus. In order to improve the bendability of woven artificial blood vessels, people usually heat-set the artificial blood vessels to make the artificial blood vessels form corrugations (such as figure 1 shown). The corrugations on the surface of the artificial blood vessel can increase the longitudinal extension and lateral flexibility of the artificial blood vessel, prevent blood vessel blockage and hinder blood flow when the artificial blood vessel is bent. [0003] After the corrugation treatment, the surface of the woven artificial blood ves...

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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IPC IPC(8): A61F2/06
Inventor 李毓陵杨夫全丁辛王璐李倩
Owner DONGHUA UNIV
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