Covered expanding mesh stent
First Claim
Patent Images
1. A stent for insertion into the interior of a body comprising:
- an expandable mesh said expandable mesh having a first configuration having a first diameter and a second configuration having a second diameter wherein said first diameter is smaller than said second diameter; and
an expandable polymer coupled with said mesh said expandable polymer having a third configuration having a third diameter and a fourth configuration having a fourth diameter said fourth diameter greater than said third diameter wherein said expandable polymer is moveable between said third configuration and said fourth configuration without significant resistance and is moveable between said fourth configuration and said third configuration without folding of bunching,wherein in said third configuration, said expandable polymer is adapted to maintain said expandable mesh in said first configuration.
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Accused Products
Abstract
The present invention is a medical device such as a stent in the form of an expandable mesh with an expandable polymer layer thereon. The mesh is metal or plastic. The polymer may be any of a variety of expandable polymers, which either expand upon hydration, or expand without significant resistance. The invention may be used, for example, as an expandable biliary, vascular, endotracheal, esophageal, or prostatic device.
377 Citations
9 Claims
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1. A stent for insertion into the interior of a body comprising:
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an expandable mesh said expandable mesh having a first configuration having a first diameter and a second configuration having a second diameter wherein said first diameter is smaller than said second diameter; and an expandable polymer coupled with said mesh said expandable polymer having a third configuration having a third diameter and a fourth configuration having a fourth diameter said fourth diameter greater than said third diameter wherein said expandable polymer is moveable between said third configuration and said fourth configuration without significant resistance and is moveable between said fourth configuration and said third configuration without folding of bunching, wherein in said third configuration, said expandable polymer is adapted to maintain said expandable mesh in said first configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification