Methods and devices for protecting a passageway in a body when advancing devices through the passageway

a technology of passageway protection and passageway, which is applied in the field of methods and devices for protecting passageways in the body, can solve the problems of user's avoiding plaque dislodging, atherosclerosis of the internal carotid artery is particularly problematic, and the procedure still has a 6% risk of death or strok
US20110224773A1Inactive Publication Date: 2011-09-15GIFFORD HANSON S +5
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
GIFFORD HANSON S
Publication Date
2011-09-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

A liner is advanced through a narrowed region in a vessel such as the internal carotid artery. The liner is advanced through the narrowed region in a collapsed position. A stent is then advanced through the liner and expanded to open the narrowed region. The liner may also have an anchor which expands an end of the liner before the stent is introduced.
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Description

BACKGROUND OF THE INVENTION

[0001] The present invention is directed to methods and devices for protecting a passageway in a body when advancing devices through the passageway. A specific application of the present invention is for treatment of blood vessels although the invention may be used in any part of the body. For example, the present invention is used to protect blood vessels during intravascular procedures for treating aneurysms, arteriovenous malformations, and atherosclerotic disease of vessels. A particular application of the present invention is for atherosclerotic disease of the carotid arteries or saphenous vein grafts. Carotid artery atherosclerotic occlusive disease contributes to hundreds of thousands of strokes annually in the United States. Atherosclerotic disease of the internal carotid artery is particularly problematic since plaque dislodged from the internal carotid artery leads directly to the cerebral vasculature.

[0002] A conventional method of treating caroti...

Claims

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