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Collateral covered graft-stent and releasing method thereof

A covered stent and side branch technology, applied in stents, medical science, blood vessels, etc., can solve the problems of large conveyors, increased volume, and large individual differences

Active Publication Date: 2007-08-15
许尚栋 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of side-branch stent-grafts needs to solve three problems: First, the angle formed by the left subclavian artery and the aortic arch varies greatly among individuals, which requires that the angle between the side-branches and the main body of the side-branch stent-graft can be changed ; Second, due to the increased side branches of the side-branch stent-graft, the volume of the stent-graft increases after compression, requiring a larger delivery device, which is not conducive to the delivery of the delivery device into peripheral blood vessels, such as the femoral artery

Method used

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  • Collateral covered graft-stent and releasing method thereof
  • Collateral covered graft-stent and releasing method thereof

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Embodiment Construction

[0020] The present invention will be described in detail below in conjunction with the accompanying drawings. FIG. 2 shows a schematic diagram of a side-branched stent-graft of the present invention, including a stent-graft main body 1 , side branches 2 , and a flexible connection portion 3 connecting the main body 1 and the side branches 2 . in:

[0021] The main body 1 of the stent-graft is composed of a metal skeleton 101 and a membrane 102, and is in the shape of a straight cylinder or tapered cylinder as a whole. The length can be 30 to 160 mm, the diameter can be 20 to 40 mm, and the diameter of the distal end can be the same as that of the proximal end, or smaller than the diameter of the proximal end. The proximal end can be with or without a bare stent. The metal skeleton 101 is in a "Z" shape or braided structure. In order to distinguish it from the metal skeleton 103 described below, the above metal skeleton 101 can be called the first part of the metal skeleton, ...

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Abstract

The invention discloses a collateral typed tectorial rack, which comprises the following parts: host, collateral, flexible connecting part of host and collateral, wherein the flexible connecting part is artificial vessel. The invention also provides releasing method of collateral typed tectorial rack, which comprises the following steps: loading the rack into transmitter pipe; making collateral on the front end of host; overlapping flexible connecting part and adjacent end of host; separating collateral from host when reducing main artery; leading the collateral into left claviculate lower artery; releasing host and collateral with random angle after the host reaches the position; fitting for any patient to be transplanted into main artery easily.

Description

technical field [0001] The invention relates to a minimally invasive interventional medical technology, in particular to a side-branch type covered stent and a release method thereof. Background technique [0002] The use of covered stents in the treatment of aortic diseases is a major advance in aortic surgery in recent years, and its indications include aortic dissection, aortic true aneurysm, aortic pseudoaneurysm, aortic penetrating ulcer, etc. . This technique greatly reduces surgical trauma. Patients recover more quickly. But there are still deficiencies. Described below. [0003] The stent-grafts currently used for thoracic actives are straight cylindrical. Figure 1 shows an example for aortic disease, when the proximal aneurysm neck is close to the left subclavian artery, in order to obtain a long enough anchoring zone to avoid the stent-graft due to high-speed blood flow in the aorta Displacement often requires the closure of the left subclavian artery. Altho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/82A61F2/06A61B17/00
Inventor 刘尚栋刘冰
Owner 许尚栋
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