Bifurcation stent pattern
First Claim
Patent Images
1. A bifurcation stent, when viewed in flat pattern, comprising:
- an outwardly deployable side branch structure;
a support ring surrounding the side branch structure;
a first serpentine band, a second serpentine band, and a third serpentine band;
the first serpentine band comprising a closed serpentine band and having a band axis being oriented perpendicularly to a stent lengthwise axis;
the second serpentine band attached at a first end to the support ring and attached at a second end to the support ring, the second serpentine band comprising a first portion having a band axis being angularly offset at a non-zero angle α
relative to the stent lengthwise axis, wherein α
is between 0 and 90 degrees;
the third serpentine band attached at a first end to the support ring and attached at a second end to the support ring, the third serpentine band comprising a first portion having a band axis being angularly offset at a non-zero angle δ
relative to the stent lengthwise axis, wherein δ
is between 0 and 90 degrees.
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Abstract
A stent may comprise a plurality of serpentine bands connected by connector struts. The stent may further comprise a side branch cell having a plurality of outwardly deployable petals. Each serpentine band may have an approximate longitudinal axis. A portion of the serpentine bands may be flared in the unexpanded state, wherein a portion of the axis of each flared band is oriented helically about a portion of the stent. The bands may reorient during stent expansion, whereafter the axis of each band is oriented in a circumferential direction.
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Citations
17 Claims
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1. A bifurcation stent, when viewed in flat pattern, comprising:
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an outwardly deployable side branch structure; a support ring surrounding the side branch structure; a first serpentine band, a second serpentine band, and a third serpentine band; the first serpentine band comprising a closed serpentine band and having a band axis being oriented perpendicularly to a stent lengthwise axis; the second serpentine band attached at a first end to the support ring and attached at a second end to the support ring, the second serpentine band comprising a first portion having a band axis being angularly offset at a non-zero angle α
relative to the stent lengthwise axis, wherein α
is between 0 and 90 degrees;the third serpentine band attached at a first end to the support ring and attached at a second end to the support ring, the third serpentine band comprising a first portion having a band axis being angularly offset at a non-zero angle δ
relative to the stent lengthwise axis, wherein δ
is between 0 and 90 degrees. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification