Hybrid stent
First Claim
1. A stent for implantation in a vessel, comprising:
- a plurality of short stent sections; and
a material interconnecting said sections in an initially unitary stent structure, said material adapted to permit said sections to separate from each other in a controlled manner in response to physiological conditions placed on said structure.
1 Assignment
0 Petitions
Accused Products
Abstract
A stent is provided with a series of short pieces or sections connected together by a bioresorbable polymer. The stent sections are designed to separate or articulate with time as the polymer biodegrades. The time of separation can be controlled by the characteristics of the bioresorbable polymer to allow the stent to be buried in neo-intima. By using a tube made of a bioresorbable polymer, the continuous covering of the tubing may inhibit embolization in the first few weeks after stent implantation within the walls of a vessel and timing for removal of the tube through formulation of the bioresorbable polymer can be controlled to occur when embolization is no longer a risk. When the detachment of the stent pieces or sections occurs, they are fixedly secured within the vessel and each are able to flex with the vessel independently of the other stent segments.
171 Citations
32 Claims
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1. A stent for implantation in a vessel, comprising:
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a plurality of short stent sections; and
a material interconnecting said sections in an initially unitary stent structure, said material adapted to permit said sections to separate from each other in a controlled manner in response to physiological conditions placed on said structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 26, 27, 28, 29)
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20. A stent for implantation in a vessel, comprising:
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a plurality of individual pieces coupled by a bioresorbable polymer tubing; and
said bioresorbable polymer tubing adapted to permit said plurality of pieces to separate from each other in a controlled manner in response to physiological conditions placed on said bioresorbable polymer tubing, said separation occurs a period of time after implantation of the stent in the vessel, said period of time being sufficient to permit neo-intima formation around the stent in an amount sufficient to secure said plurality of stent segments with respect to the vessel. - View Dependent Claims (21, 22, 23, 24, 25)
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30. A stent for implantation in a vessel, comprising:
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a plurality of short sections;
a bioresorbable polymer tubing for detachably connecting adjacent said plurality of stent segments; and
said bioresorbable polymer tubing being fenestrated and adapted to permit said adjacent stent segments to separate from each other in a controlled manner in response to physiological conditions placed on said bioresorbable polymer tubing, said separation occurs a period of time after implantation of the stent in the vessel, said period of time being sufficient to permit neo-intima formation around the stent in an amount sufficient to secure said plurality of stent segments with respect to the vessel. - View Dependent Claims (31, 32)
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Specification