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Artificial blood vessel structure capable of improving compliance

An artificial blood vessel and compliance technology, applied in the field of medical devices, can solve the problems of only 0.4~2.8%, only mentioning single-layer compliance, incomparable compliance of artificial blood vessels, etc., and achieves the improvement of blood vessel compliance. Effect

Pending Publication Date: 2019-01-01
JIANGSU BIODA LIFE SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent "A textile artificial blood vessel that can improve radial compliance" (expired), publication number CN201803964A, through the structural design of the woven artificial blood vessel, the inner and outer layers of the blood vessel are formed to improve the radial compliance of the blood vessel, but the compliance Still only between 0.4 and 2.8%, and only the compliance of a single layer (inner or outer layer) is mentioned, and no introduction is made to the overall vessel compliance
[0004] People have explored and improved from various aspects, such as material selection, fabric structure, and post-processing methods, but so far, the compliance of artificial blood vessels is still not comparable to that of human arteries

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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  • Artificial blood vessel structure capable of improving compliance
  • Artificial blood vessel structure capable of improving compliance
  • Artificial blood vessel structure capable of improving compliance

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as figure 1 , the invention discloses a blood vessel structure capable of improving compliance, which adopts a composite tissue of plain weave and satin weave. The weft yarn adopts 80D DTY and 80D FDY to form a composite yarn through doubling and twisting. When doubling DTY and FDY, different tension control systems and overfeeding devices are used, so that the overfeeding amount of FDY is 5% of DTY. When twisting, the tension value of DTY is set to 1CN, the tension value of FDY is 2CN, and DTY is transferred to the outer layer of yarn. After the coated blood vessel passes the compliance test device, under the dynamic pressure of 26.7kpa applied to the blood vessel, the diameter change of the blood vessel is 3.7% of the natural diameter.

Embodiment 2

[0026] Such as figure 2 , the invention discloses a blood vessel structure capable of improving compliance, which adopts a composite tissue of plain weave and satin weave. The weft yarn is core-spun yarn, the core yarn is 80D PU yarn, the covering yarn is 80D PET yarn, the weaving angle of the PET yarn is set to 100°, and the PET forms a spiral structure on the outer ring. After the coated blood vessel passes the compliance test device, under the dynamic pressure of 26.7kpa applied to the blood vessel, the diameter change of the blood vessel is 4.0% of the natural diameter.

Embodiment 3

[0028] Such as image 3 , the invention discloses a blood vessel structure capable of improving compliance, which adopts a composite tissue of plain weave and satin weave. The weft yarn is core-spun yarn, the core yarn is 40D*2 PET textured yarn, the covering yarn is 40D*2 PET filament, the braiding angle of PET filament is set to 100°, and the covering yarn forms a spiral structure on the outer ring. After the coated blood vessel passes the compliance test device, under the dynamic pressure of 26.7kpa applied to the blood vessel, the diameter change of the blood vessel is 4.2% of the natural diameter.

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 an artificial blood vessel structure capable of improving compliance, belonging to the field of medical instruments. The woven structure is characterized in that it is a polyester artificial blood vessel, the inner and outer layers of the polyester artificial blood vessel are woven with a satin structure, the warp yarn is made of PET textured yarn, the middle layer of thepolyester artificial blood vessel is woven plain weave, and the warp yarn is made of PET filament. In the inner and outer layers of the polyester artificial blood vessel, the weft yarn is a compositeyarn composed of a textured yarn or an elastic yarn or a non-elastic yarn. Compared with the prior art, the invention has the beneficial effects that the artificial blood vessel of the invention adopts the composite yarn composed of the textured yarn or the elastic yarn and the inelastic yarn, so that the radial diameter of the blood vessel can meet the requirements of the human body, and the compliance of the blood vessel is improved by 3% to 5%.

Description

technical field [0001] The invention relates to an artificial blood vessel structure capable of improving compliance, and belongs to the field of medical instruments. Background technique [0002] The earliest artificial blood vessels were invented in the United States, around the 1940s and 1950s. my country began to develop artificial blood vessels in 1957, and carried out transplantation of large and medium arteries on the basis of a large number of animal experiments, and achieved satisfactory results. In recent years, textile artificial blood vessels have been widely used clinically, but there are still some problems. How to optimize the anti-seepage performance, compliance, biocompatibility, and easy cell growth of artificial blood vessels has become the focus of attention in recent years. [0003] Clinically, vascular compliance is defined as the change in vascular area, diameter, or volume as a function of pressure. Vascular compliance is the adaptability of blood ...

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): A61F2/06A61L27/18A61L27/50
CPCA61L27/18A61L27/507A61F2/06C08L67/00
Inventor 奚敏敏杜广武
Owner JIANGSU BIODA LIFE SCI CO LTD
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