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Anti-bending artificial blood vessel and preparation method thereof

An artificial blood vessel, anti-bending technology, applied in the field of medical devices, to prevent bending or kink, relieve pulling and tearing, and improve bending resistance

Pending Publication Date: 2022-08-09
スンナテクノロジーズシャンハイカンパニーリミテッド
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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 that the artificial blood vessel can be bent arbitrarily at 180° without flattening or kink phenomenon, so as to ensure that the whole artificial blood vessel has good anti-bending performance, which can effectively improve the artificial blood vessel. Anti-bending performance, while effectively improving the compliance of artificial blood vessels

Method used

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  • Anti-bending artificial blood vessel and preparation method thereof
  • Anti-bending artificial blood vessel and preparation method thereof
  • Anti-bending artificial blood vessel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] like figure 1 As shown, the anti-bending artificial blood vessel includes an artificial blood vessel inner layer 1, a synthetic polymer anti-bending ring 2 and an artificial blood vessel outer layer;

[0054] The artificial blood vessel inner layer 1 is a synthetic polymer tube body;

[0055] The outer layer of the artificial blood vessel is a synthetic polymer fiber membrane;

[0056] The shape of the synthetic polymer anti-bending ring 2 is a non-equidistant helical structure;

[0057] The synthetic polymer anti-bending ring 2 is wound on the outer wall of the artificial blood vessel inner layer 1, between the artificial blood vessel inner layer 1 and the artificial blood vessel outer layer, and is covered and fixed by the artificial blood vessel inner layer 1 and the artificial blood vessel outer layer.

[0058] The artificial blood vessel of the first embodiment has a three-layer structure, the inner layer is a synthetic polymer tube body, the outer layer is a syn...

Embodiment 2

[0061] Based on the artificial blood vessel of the first embodiment, the ring spacing of the synthetic polymer anti-bending ring 2 gradually increases from the middle part of the artificial blood vessel along the center line of the artificial blood vessel to both ends of the artificial blood vessel.

[0062] Preferably, the length of the synthetic polymer anti-bending ring 2 is consistent with the length of the center line of the artificial blood vessel.

[0063] Preferably, the length of the synthetic polymer anti-bending ring 2 is 400mm˜600mm.

[0064] In the artificial blood vessel of the second embodiment, the synthetic polymer anti-bending ring 2 is a spirally wound gradient ring spacing structure with anti-bending performance. The spacing increases gradually, and the ring spacing of the synthetic polymer anti-bending ring 2 in the middle of the artificial blood vessel is smaller, and the distance between the extension rings at both ends increases, which can effectively r...

Embodiment 3

[0066] Based on the artificial blood vessel of Embodiment 1, the inner layer 1 of the artificial blood vessel is prepared by using a synthetic polymer material through an electrospinning process, such as figure 2 shown;

[0067] The outer layer of the artificial blood vessel is prepared by using a synthetic polymer material through an electrospinning process, such as image 3 shown.

[0068] Preferably, the inner diameter of the inner layer 1 of the artificial blood vessel is 3 mm to 6 mm, and the thickness of the tube wall is 0.3 to 1 mm.

[0069] Preferably, the thickness of the outer layer of the artificial blood vessel is 0.1 mm to 0.5 mm.

[0070] Preferably, the synthetic polymer materials include but are not limited to polyurethane (aromatic, aliphatic, etc.), siloxane-terminated polycarbonate (aliphatic, aromatic), nylon, polytetrafluoroethylene, polyethylene Alcohol, polylactic acid, polyethylene, polycaprolactone.

[0071] Preferably, the synthetic polymer mater...

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Abstract

The invention discloses an anti-bending artificial blood vessel which comprises an artificial blood vessel inner layer, a synthetic polymer anti-bending part and an artificial blood vessel outer layer. The artificial blood vessel inner layer is a synthetic polymer tube body; the outer layer of the artificial blood vessel is a synthetic polymer fiber membrane; the appearance of the synthetic polymer anti-bending ring is of a non-equidistant spiral structure; the synthetic polymer anti-bending ring is wound on the outer wall of the artificial blood vessel inner layer, is positioned between the artificial blood vessel inner layer and the artificial blood vessel outer layer, and is coated and fixed by the artificial blood vessel inner layer and the artificial blood vessel outer layer. The invention further discloses a preparation method of the artificial blood vessel. According to the bending-resistant artificial blood vessel, the whole artificial blood vessel can be bent by 180 degrees at will and cannot be flattened or twisted, it is guaranteed that the whole artificial blood vessel has good bending resistance, the bending resistance of the artificial blood vessel can be effectively improved, and meanwhile the compliance of the artificial blood vessel is effectively improved.

Description

technical field [0001] The invention relates to the technical field of medical devices, and relates to an anti-bending artificial blood vessel and a preparation method thereof. Background technique [0002] According to epidemiological statistics, the incidence of chronic kidney disease in my country is as high as 10.8%, with about 130 million patients, including about 3 million end-stage renal patients. Clinically, hemodialysis is one of the main treatments for patients with end-stage renal disease. Establishing reasonable vascular access is of great significance for patients with end-stage renal disease to receive dialysis successfully. [0003] However, with the improvement of domestic living standards and medical technology, the life cycle of hemodialysis patients has been prolonged, and autologous blood vessels will be irreversibly damaged with the increase of dialysis age. Limited by the quality and quantity of autologous blood vessels, artificial vascular arterioveno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/06A61F2/07
CPCA61F2/06A61F2/07A61F2002/072A61F2210/0076A61F2210/00A61F2240/001
Inventor 李松祝翊倩陆亚明孙彬彬邢美毅段晓博王春蕾
Owner スンナテクノロジーズシャンハイカンパニーリミテッド
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