Stent with protruding branch portion for bifurcated vessels
First Claim
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1. A stent comprising:
- an expandable framework comprising a plurality of serpentine bands including a branch band, adjacent serpentine bands connected by connector struts, said branch band consisting of alternating struts and turns, said branch band comprising a first portion and a second portion, said first portion comprising a plurality of non-split struts and non-split turns, said second portion comprising a plurality of split struts and split turns that define a serpentine gap, said serpentine gap bounded entirely by said branch band.
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Abstract
The present invention is directed to a stent for use in a bifurcated body lumen having a main branch and a side branch. The stent comprises a radially expandable generally tubular stent body having proximal and distal opposing ends with a body wall having a surface extending therebetween. The surface has a geometrical configuration defining a first pattern, and the first pattern has first pattern struts and connectors arranged in a predetermined configuration. The stent also comprises a branch portion comprised of a second pattern, wherein the branch portion is at least partially detachable from the stent body.
381 Citations
20 Claims
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1. A stent comprising:
an expandable framework comprising a plurality of serpentine bands including a branch band, adjacent serpentine bands connected by connector struts, said branch band consisting of alternating struts and turns, said branch band comprising a first portion and a second portion, said first portion comprising a plurality of non-split struts and non-split turns, said second portion comprising a plurality of split struts and split turns that define a serpentine gap, said serpentine gap bounded entirely by said branch band. - View Dependent Claims (2)
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3. A bifurcation stent having an unextended configuration and an extended configuration, the stent comprising:
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a main stent body comprising a body wall, the body wall comprising a plurality of adjacent serpentine bands, each serpentine band comprising a plurality of struts; said serpentine bands including a branch band consisting of alternating struts and turns, a portion of said struts and turns comprising split struts and split turns, in the unextended configuration the split struts and split turns defining a cell within the branch band having a serpentine shape, in the extended configuration, the cell comprises a side branch opening. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A bifurcation stent comprising:
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a main stent body having a body wall comprising a plurality of adjacent serpentine bands, a portion of the body wall comprising a branch band consisting of alternating struts and turns, said branch band including a branch portion, the branch portion having an unextended configuration and an extended configuration; in the unextended configuration, the branch portion comprising a plurality of nested struts including first struts and second struts, the first struts comprising longitudinal strut portions connected to one another at first curved portions, the second struts comprising longitudinal strut portions connected to one another at second curved portions, said first struts and second struts bounding a cell; in the extended configuration, the cell comprises a side branch opening. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification