Inner leak proof bendable internal cavity isolation artificial blood vessel support and artificial blood ressel

An artificial blood vessel and flexible technology, which is used in the field of intraluminal isolation of artificial stent vessels and stents for preventing endoleak and flexible lumen, and percutaneous puncture implantation in the field of intraluminal isolation of large arteries, which can solve the problem of inability to load small-diameter pusher sheaths. , wrong choice of blood vessel diameter, channel artery damage, etc., to avoid suture connection joints, ensure strength, and improve flexibility

Inactive Publication Date: 2004-12-22
SOUTHEAST UNIV
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

(5) Incorrect selection of stent-type vessel diameter: when the diameter of the stent at the proximal and distal anchoring sites is too small, it may cause endoleaks
At present, there is no intraluminal isolation artificial stent at home and abroad that can completely prevent endoleakage. Although there is a domestic patent (Patent No. 02138385.5) that proposes to prevent endoleakage, its defect is that the sealing ring may prevent it from being loaded into a small diameter after contraction. Pushing the introducer sheath or introducing the system with a thicker diameter will cause more damage to the artery of the channel. It is not considered that the emptying of the conveyor channel during the operation and the injection of liquid will cause the filler to pre-expand and affect the sealing effect, and once the filler pocket is ruptured, the filler will enter the bloodstream. flow can be dangerous

Method used

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  • Inner leak proof bendable internal cavity isolation artificial blood vessel support and artificial blood ressel
  • Inner leak proof bendable internal cavity isolation artificial blood vessel support and artificial blood ressel
  • Inner leak proof bendable internal cavity isolation artificial blood vessel support and artificial blood ressel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Embodiment one: see Figure 12 , an anti-endoleak and easy-to-bend straight cylinder intracavity isolation artificial stent blood vessel, the artificial stent blood vessel is composed of wire braided stent and expanded polytetrafluoroethylene artificial blood vessel, at the proximal end of the stent, the connection between the artificial blood vessel and the stent adopts Double-layer laminated film, because the suture of the artificial blood vessel and the stent adopts a double-layer overlapping design, the blood flow into the artificial blood vessel cavity must first pass through the first sealing section of the proximal end, because most of the blood flow has passed through the sealing section cavity and has crossed the joint between the second section of artificial blood vessel and the blood vessel, so the blood that may enter the second section of artificial blood vessel cavity to form an endoleak is only a small part of the leakage from the first section of the seal...

Embodiment 2

[0051] Embodiment two: see Figure 13 , an anti-endoleak and easily bendable bifurcated cavity-isolated artificial stent blood vessel, the artificial stent blood vessel is composed of a metal wire braided stent and expanded polytetrafluoroethylene artificial blood vessel, at the proximal end of the stent, the artificial blood vessel and the stent are connected The double-layer laminated film is adopted. Since the suture of the artificial blood vessel and the stent adopts a double-layer overlapping design, the blood flow into the artificial blood vessel cavity must first pass through the first sealing section of the proximal end, because most of the blood flow has passed through the sealing section. and has crossed the joint between the second artificial blood vessel and the blood vessel, so the blood that may enter the cavity of the second artificial blood vessel and form an endoleak is only a small part of the blood that leaks in from the first sealing section, and its flow ra...

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PUM

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Abstract

A scaffold for the artificial blood vessel without internal leakage and curved easily is composed of multiple Z-shaped rings arranged axially. Several connecting rods are connected between two Z-shaped rings. The top and bottom Z-shaped rings have archor rods. A segment of sealed artificial blood vessel wall is arranged at both ends of said scaffold. The middle segment of artificial blood vessel wall is linked to said sealed ones in sleeve mode.

Description

technical field [0001] The present invention relates to percutaneous puncture implantable intraluminal isolation of large arteries, in particular to anti-endoleak and flexible intraluminal isolation artificial stents and stents for minimally invasive treatment of aortic aneurysm-like lesions or aortic dissection, and belongs to the technology of medical equipment manufacturing field. Background technique [0002] The aortic wall can be divided into three layers in terms of tissue structure: aortic intima, aortic media and aortic adventitia. The pathological regional expansion of the arterial wall is called an aneurysm, and an aortic aneurysm is a full-thickness expansion of the aortic wall, forming a tumor-like change. And aortic dissection aneurysm is mainly due to degeneration of the middle layer of the artery, the cohesion between the intima, the middle layer and the adventitia decreases. The inferior transintimal tear enters the aortic media, ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/00A61F2/06A61M29/00
Inventor 易红汤文成倪中华厉其昀
Owner SOUTHEAST UNIV
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