Methods and systems for treating a bifurcation with provisional side branch stenting
First Claim
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1. A system for treating a bifurcation, the system comprising:
- a first delivery catheter comprising a first elongate shaft with proximal and distal ends, and a first expandable member adjacent the distal end of the first elongate shaft; and
a second delivery catheter comprising a second elongate shaft with proximal and distal ends, a second expandable member adjacent the distal end of the second elongate shaft, and a radially expandable stent disposed over the second expandable member,wherein the stent comprises a sidewall having a side hole therethrough; and
wherein the stent has a collapsed configuration suitable for delivery to the bifurcation, an expanded configuration in which the stent is configured to support a vessel, a proximal end, and a proximal portion extending along a proximal portion length from the proximal end to the side hole in the collapsed configuration; and
wherein a first portion of the first elongate shaft is disposed under the proximal portion of the stent, and the first elongate shaft passes through the side hole so that the first expandable member is disposed distal to the second expandable member for concurrent advancement of the first and second delivery catheters through the vessel, wherein the first elongate shaft is proximally retractable relative to the second elongate shaft while the stent is in the collapsed configuration to retract the first expandable member through the side hole into the proximal portion of the stent, and wherein the first expandable member includes a proximal working portion and a distal working portion distal to the proximal working portion, the proximal working portion having a length greater than the proximal portion length of the stent in the collapsed configuration, the distal working portion having a length sufficient so that the distal working portion extends into a branch of the bifurcation when a proximal end of the proximal working portion is positioned proximal to the proximal end of the stent in the collapsed configuration.
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Abstract
A system for treating a bifurcation includes first and second delivery catheters, each having an expandable member. A stent having a side hole is disposed on the second delivery catheter. A portion of the first delivery catheter is disposed under a portion of the stent. The first delivery catheter is slidable relative to the second delivery catheter, and the first delivery catheter passes through the side hole. Expansion of the first expandable member expands a portion of the stent and expansion of the second expandable member expands the rest of the stent.
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Citations
28 Claims
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1. A system for treating a bifurcation, the system comprising:
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a first delivery catheter comprising a first elongate shaft with proximal and distal ends, and a first expandable member adjacent the distal end of the first elongate shaft; and a second delivery catheter comprising a second elongate shaft with proximal and distal ends, a second expandable member adjacent the distal end of the second elongate shaft, and a radially expandable stent disposed over the second expandable member, wherein the stent comprises a sidewall having a side hole therethrough; and
wherein the stent has a collapsed configuration suitable for delivery to the bifurcation, an expanded configuration in which the stent is configured to support a vessel, a proximal end, and a proximal portion extending along a proximal portion length from the proximal end to the side hole in the collapsed configuration; andwherein a first portion of the first elongate shaft is disposed under the proximal portion of the stent, and the first elongate shaft passes through the side hole so that the first expandable member is disposed distal to the second expandable member for concurrent advancement of the first and second delivery catheters through the vessel, wherein the first elongate shaft is proximally retractable relative to the second elongate shaft while the stent is in the collapsed configuration to retract the first expandable member through the side hole into the proximal portion of the stent, and wherein the first expandable member includes a proximal working portion and a distal working portion distal to the proximal working portion, the proximal working portion having a length greater than the proximal portion length of the stent in the collapsed configuration, the distal working portion having a length sufficient so that the distal working portion extends into a branch of the bifurcation when a proximal end of the proximal working portion is positioned proximal to the proximal end of the stent in the collapsed configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification