TIPS covered stent capable of automatically adjusting blood flow pressure

A self-adjusting, covered stent technology, applied in the field of medical devices, can solve problems such as excessive intimal hyperplasia, achieve the effects of reducing blood flow, preventing hepatic encephalopathy, and reducing the incidence of thrombus

Pending Publication Date: 2020-12-29
上海宏派医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the stents of the above two patents only reduce the problem of bile leakage and the "capping" of

Method used

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  • TIPS covered stent capable of automatically adjusting blood flow pressure
  • TIPS covered stent capable of automatically adjusting blood flow pressure
  • TIPS covered stent capable of automatically adjusting blood flow pressure

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Embodiment Construction

[0029] The present invention will be further described below according to the accompanying drawings of the description:

[0030] Such as figure 1 As shown, the present invention is composed of bare stents 1 at both ends and the inner diameter adjustment structure 2 of the middle stent. The inner diameter adjustment structure 2 of the stent is composed of a stent 21 and a coating 3. There is a developing structure 4 at both ends of the inner diameter adjustment structure 2 of the stent. The bare stent 1 is woven into a zigzag structure by nickel-titanium wire, and the structure of the stent 21 is consistent with that of the bare stent 1 , and is integrally processed with the bare stent 1 . The outer surface of the stent 21 is a plane coating, and the inner surface is a coating 3, the thickness of the middle section of the coating 3 is thicker than that of both ends, and it is in a smooth and gradual shape. The material of the coating 3 is a porous network microstructure, which...

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Abstract

The invention relates to the field of medical instruments, and in particular relates to a transjugular vein intrahepatic portal vein puncture stent (TIPS stent) capable of automatically adjusting blood flow pressure. The stent is composed of a bare stent and a stent inner diameter adjusting structure, and two ends of the stent inner diameter adjusting structure are respectively provided with a development structure. The stent inner diameter adjusting structure can automatically adjust the inner diameter of the product according to the portal vein blood flow pressure. When the portal vein pressure rises, the stent inner diameter is increased, the blood flow in the stent is increased, and tissue bleeding of a patient caused by excessive rising of the portal vein pressure can be prevented; and when the portal vein pressure reduces, the inner diameter of the stent is reduced, the blood flow in the stent is reduced, and the occurrence rate of hepatic encephalopathy after a TIPS operation can be prevented. The product is simple and reliable in structure, the inner diameter change of the stent inner diameter adjusting structure is in smooth transition, and the occurrence rate of thrombusformed in the stent is reduced.

Description

technical field [0001] The patent of the present invention relates to a medical device, specifically a transjugular intrahepatic portal vein puncture stent (TIPS stent) that can automatically adjust blood flow. Background technique [0002] Hepatic cirrhosis and portal hypertension (PHT) refer to a group of clinical syndromes in which portal vein pressure (>15 mmHg) is increased due to various reasons such as viral hepatitis or Budd-Chiari syndrome, and blood flow in the portal vein system is obstructed, leading to the formation of collateral circulation. syndrome. Cirrhotic portal hypertension can lead to esophageal-gastric vein rupture and bleeding, refractory ascites, hepatic encephalopathy, hepatorenal syndrome and other complications. At present, in the clinical treatment of patients with portal hypertension and gastric fundus bleeding caused by portal hypertension, intrahepatic puncture through the jugular vein is often used to implant a covered stent between the p...

Claims

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Application Information

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IPC IPC(8): A61F2/07
CPCA61F2/07A61F2250/001A61F2250/0039A61F2310/0097
Inventor 李虎黄兴龙丁峰顾浩栋徐硕
Owner 上海宏派医疗科技有限公司
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