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Variable-aperture covered stent

A stent-graft and variable-aperture technology, which is applied in the field of medical devices, can solve the problem of low safety of carotid stents and achieve high safety results

Pending Publication Date: 2020-12-04
SUZHOU ZENITH VASCULAR SCITECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a variable-aperture stent graft to solve the problem of low safety of existing carotid stents

Method used

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Embodiment Construction

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0034] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two ...

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Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a variable-aperture covered stent. The variable-aperture covered stent comprises a stent body and a filter membrane, wherein the stent body comprises a near end part, a far end part and a middle part located between the near end part and the far end part in the blood flow direction, the near end part is used for being installed on a common carotid artery, the middle part is used for being opposite to an inlet of an external carotid artery, and the far end part is used for being installed on an internal carotid artery; the filter membrane is connected with the stent body and comprises a near-aperture section, a far-aperture section and a middle-aperture section located between the near-aperturesection and the far-aperture section; and the near-end part is covered with the near-aperture section, the far-end part is covered with the far-aperture section, the middle part is covered with the middle-aperture section, the hole area of the middle-aperture section is larger than that of the near-aperture section and the far-aperture section, and therefore, plaques on the common carotid artery and plaques on the internal carotid artery can be prevented from falling off and flowing to the downstream of blood vessels, and the blood can normally enter the external carotid artery. The variable-aperture covered stent is higher in safety.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a variable-aperture covered stent. Background technique [0002] Cerebrovascular disease is a major disease that threatens human health today, and is the third leading cause of death after cardiovascular disease and tumors. Among them, 25% of ischemic strokes are related to carotid artery stenosis or occlusion. [0003] The treatment of carotid artery stenosis is mainly divided into drug therapy, carotid endarterectomy, and carotid artery stenting. Among them, carotid artery stenting has the advantages of simple operation, less trauma, and fewer complications, and is currently one of the effective methods for treating carotid artery stenosis. [0004] The carotid artery is divided into the common carotid artery, the external carotid artery and the internal carotid artery. The common carotid artery, the external carotid artery and the internal carotid artery h...

Claims

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Application Information

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IPC IPC(8): A61F2/07A61F2/06
CPCA61F2/07A61F2002/061
Inventor 李爽汪泽辉夏洁
Owner SUZHOU ZENITH VASCULAR SCITECH LTD
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