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Covered stent and manufacturing method thereof

A covered stent and manufacturing method technology, applied in the direction of stents, blood vessels, prostheses, etc., can solve the problem of large shape of covered stents, achieve the effects of reducing stocking costs, increasing blood flow reserves, and stimulating aneurysm shrinkage

Active Publication Date: 2019-01-04
SHANGHAI MICROPORT MEDICAL (GROUP) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to provide a stent-graft and its manufacturing method to solve the problems of the stent-graft in the prior art with a large shape.

Method used

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  • Covered stent and manufacturing method thereof
  • Covered stent and manufacturing method thereof
  • Covered stent and manufacturing method thereof

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Experimental program
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Effect test

Embodiment 1

[0045] Please refer to figure 1 , which is a schematic flowchart of the manufacturing method of the stent graft according to the first embodiment of the present invention. like figure 1 As shown, in the first embodiment, the manufacturing method of the stent graft specifically includes:

[0046] First, step S10 is executed: obtaining branch vessel data of a diseased vessel. Here, it mainly includes the position of the branch blood vessel relative to the diseased blood vessel, and further includes data such as the inner diameter of the diseased blood vessel, the inner diameter of the branch blood vessel, and the like. Through the above data, the prepared stent graft can be better adapted to the condition of the patient.

[0047] Next, step S11 is performed: according to the branch vessel data of the diseased blood vessel, the coated tubing is sleeved outside the crimped stent body to form a coated area and an uncoated area on the surface of the stent body, and the uncoated a...

Embodiment 2

[0063] Please refer to Figure 7 , which is a schematic flowchart of the manufacturing method of the stent graft according to the second embodiment of the present invention. like Figure 7 As shown, in the second embodiment, the manufacturing method of the stent graft specifically includes:

[0064] First, step S20 is executed: obtaining branch vessel data of a diseased vessel. Here, it mainly includes the position of the branch blood vessel relative to the diseased blood vessel, and further includes data such as the inner diameter of the diseased blood vessel, the inner diameter of the branch blood vessel, and the like. Through the above data, the prepared stent graft can be better adapted to the condition of the patient.

[0065] Next, step S21 is performed: according to the branch blood vessel data of the diseased blood vessel, the coating solution is coated on the outside of the crimped stent body to form a coated area and an uncoated area on the surface of the stent bo...

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Abstract

The invention provides a covered stent and a making method thereof. The covered stent comprises a stent body and a covering membrane attached outside the stent body, thus, the covered stent can have a smaller appearance, and therefore the flexibility of the covered stent is improved; in addition, the surface of the stent body is not completely covered with the covering membrane, and therefore the covered stent does not block branch vessels. Furthermore, the covering membrane is made of biodegradable polymer materials, therefore, endothelialization of the covered stent can be promoted, arterial aneurysm is activated to shrink, formation of thrombus in the covered stent is avoided, blocking of the branch vessels is avoided, and blood flow reserve of a patient is increased. Further, the making method of the covered stent is simple, the covered stent can be made before an operation according to different clinic requirements, therefore, the covered stent can better adapt to the condition of the patient, and the product preparation cost of a hospital is reduced.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a covered stent and a manufacturing method thereof. Background technique [0002] Coronary artery rupture and perforation account for about 0.1% to 2.5% of percutaneous coronary intervention (PCI). Once the consequences are serious, it can cause acute cardiac tamponade, which requires emergency thoracotomy to stop bleeding. Can cause death, long-term pseudoaneurysm, coronary ventricular fistula and so on. Clinical research results in recent years have found that after drug-eluting stent (DES) implantation, postoperative stent malapposition is a common phenomenon, so high-pressure post-expansion is often used after stent release. With the development and application of new PCI technology, interventional doctors are dealing with more and more complex coronary artery lesions, such as severe tortuous lesions, severe calcified lesions, and chronic occlusive lesions (CTO) inte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/07A61L31/10A61L31/14A61L31/16
CPCA61F2/0077A61F2/07A61F2210/00A61F2240/002A61F2250/0067A61L31/10A61L31/148A61L31/16A61L2300/606C08L67/04C08L69/00C08L67/00
Inventor 陈树国陈良龙蔡炜孟娟罗七一
Owner SHANGHAI MICROPORT MEDICAL (GROUP) CO LTD
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