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Aneurysm occlusion device

A technology for aneurysms and aneurysm necks, which is applied in the field of intravascular treatment of aneurysms, and can solve problems such as blocking blood flow and blocking blood flow in aneurysms

Active Publication Date: 2012-06-20
PENUMBRA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem encountered with this device is that the side walls of the device block blood flow not only into the aneurysm, but also between the vessel and any side branch vessels that the stent accidentally covers

Method used

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  • Aneurysm occlusion device
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Examples

Experimental program
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Effect test

Embodiment Construction

[0034] Figure 2A One embodiment of an aneurysm occlusion system 100 is shown. In general, system 100 includes occlusion device 10 , sheath 12 and pusher 14 . A guidewire 16 may also be used with the system 100 .

[0035] The occlusion device 10 is a tubular device capable of being held in a constrained form or shape prior to deployment and then expanded into contact with the vessel wall upon deployment. Suitable materials for the sleeve include shape memory materials including superelastic nitinol or shape memory polymers or other materials such as stainless steel, composite materials or combinations of metal and polymer materials. In a preferred embodiment, the blockage can be formed by laser cutting features in a length of superelastic nitinol tubing, followed by one or more chemical treatments and shape setting of the material using methods known to those skilled in the art device 10. As will be discussed in more detail below, the walls of the device 10 are configured ...

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PUM

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Abstract

An aneurysm occlusion device 10 is positionable within a cerebral blood vessel covering a neck of an aneurysm on the blood vessel. The device includes a tubular element having a lumen surrounded by an occlusive sidewall including a plurality of gaps. The gaps are sufficiently small to cause at least partial occlusion against flow of blood from the blood vessel through the side wall into the aneurysm, but are expandable in response to a fluid pressure differential between a first area inside the lumen and a second area outside the lumen to allow flow of fluid through the side wall between the blood vessel and a side branch vessel.

Description

technical field [0001] The present invention relates generally to the field of aneurysm treatment, and more particularly to systems and methods for endovascular treatment of aneurysms. Background technique [0002] An aneurysm is an abnormal ballooning of an area of ​​the wall of an artery due to fragility of the wall tissue. [0003] Although an aneurysm can develop in any artery in the body, most aneurysms form in blood vessels of the brain. If left untreated, such an aneurysm can rupture, causing life-threatening bleeding in the brain that can result in death or severe disability. Aneurysms that do not rupture may form blood clots that may break free from the aneurysm potentially causing a stroke. In some patients, aneurysms may put pressure on nerves or brain tissue, causing pain, paresthesias, and / or seizures. [0004] One current approach to treating aneurysms involves surgically placing an aneurysm clip across the aneurysm to prevent blood flow into the aneurysm. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/82A61B17/12A61F2/06
CPCA61F2002/9155A61B17/12A61F2002/3008A61F2/856A61B17/12118A61F2/915A61B19/54A61F2/91A61F2002/91525A61F2/844A61F2002/823A61B17/12036A61F2002/91533A61B2017/12054A61B2017/1205A61F2002/91575A61F2250/0098A61F2002/065A61F2230/0008A61F2230/0034A61F2230/0091A61F2230/0054A61F2230/0095A61B90/39
Inventor A·波斯D·贝里V·古普塔A·利诺夫D·许
Owner PENUMBRA
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