Vein-constricted covered stent-graft device for myocardial ischemic coronary vessels

A technology of venous blood vessels and covered stents, applied in the field of medical equipment, to achieve the effect of ensuring blood supply to the myocardium

Active Publication Date: 2022-06-03
李娅娜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a venous constricted stent-graft device for myocardial ischemic coronary vessels, which solves the problem of no Technical Problems with Reflow Phenomena

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  • Vein-constricted covered stent-graft device for myocardial ischemic coronary vessels
  • Vein-constricted covered stent-graft device for myocardial ischemic coronary vessels
  • Vein-constricted covered stent-graft device for myocardial ischemic coronary vessels

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Embodiment Construction

[0044] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0045] In each embodiment of the present invention, the "far" and "near" are both based on the operator. For example, the "distal end" of the first catheter refers to the end of the first catheter away from the operator, whereas the "proximal end" of the first catheter refers to the end of the first lumen close to the operator.

[0046] The embodiments of the present application provide a venous circumscri...

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Abstract

The invention provides a venous constriction membrane stent device for myocardial ischemic coronary vessels, and relates to the field of medical instruments. The device includes a covered stent, and the covered stent includes a variable-diameter stent and a flow-blocking film; the variable-diameter stent can shrink and expand along the radial direction, and the flow-blocking film covers the variable-diameter stent Outer surface: when the variable-diameter stent expands along the radial direction, blood in the coronary vein is blocked from flowing from the cardiomyocytes to the right atrium; Blood flows from the heart muscle cells to the right atrium. The variable-diameter stent in the expanded state reduces the blood flow; realizes the end of the coronary vein close to the right atrium, so that the blood flow of the vein decreases and returns to the right atrium. Under the action of pressure, the blood in the vein will flow back into the venous microcirculation of the myocardium , The ischemic myocardial area is fully perfused to ensure blood supply to the myocardium.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a venous ring shrinkable stent-graft device for myocardial ischemia coronary venous vessels. Background technique [0002] The coronary circulation is to provide the heart itself with the nutrients and oxygen it needs, and to transport metabolic waste away. It is a circulation in which blood flows directly from the coronary arteries at the base of the aorta to the capillary network inside the myocardium, and finally flows back to the right atrium and right ventricle by veins, and then enters the lungs for exchange and flows into the left atrium and left ventricle. Coronary artery stenosis or blockage in the coronary circulation can cause myocardial ischemia, hypoxia or necrosis. [0003] Acute myocardial infarction is myocardial necrosis caused by acute and persistent ischemia and hypoxia of coronary artery. Clinically, there are severe and persistent retrosternal pain, which can...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/07
CPCA61F2/07
Inventor 李娅娜崔鑫童李冉沈燕喜李金露
Owner 李娅娜
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