Prosthesis for treating vascular bifurcations
First Claim
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1. A prosthesis for placement at an opening from a main body lumen to a branch body lumen, the prosthesis comprising:
- a radially expansible support comprising a first wall pattern, the support configured to be deployed in at least a portion of the branch body lumen, the support adapted to provide a first radial force to support a body lumen;
at least two elongate, flexible fronds extending from an end of the support, each frond having a first end, a second end, and comprising first and second spaced apart filaments each having first and second ends, the first end of the first filament being directly connected to a first proximal apex of the radially expansible support, the first end of the second filament being directly connected to a second proximal apex of the radially expansible support, the first proximal apex being spaced apart from the second proximal apex, the second end of the second filament being coupled with the first filament at a location proximal of a transition portion of the frond, the transition portion comprising a second wall pattern different from the first wall pattern, the transition portion of the frond extending from an end of the support and configured to be positioned across the opening and into the main body lumen, the fronds comprising an elongate portion disposed proximal of the transition portion, the elongate portion having a third wall pattern different from the second wall pattern;
at least one circumferential link connected to the second ends of the fronds, the second end of each frond connected to a corresponding single location of the circumferential link, the circumferential link spaced axially apart from the support by the fronds and adapted to provide a second radial force that is less than the first radial force; and
a plurality of elongate side wall openings located at least partially proximal of the transition portion in between adjacent fronds sized and configured to receive a stent deployment device therethrough;
the elongate flexible fronds, the support and the circumferential link defining a unitary body as deployed, the elongate side wall openings in between adjacent fronds for facilitating crossing of a main vessel stent therethrough when the support is positioned in the branch body lumen and the circumferential link is positioned in the main body lumen.
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Abstract
A stepped balloon catheter prosthesis deployment system is disclosed for placement of a prosthesis across an Os opening from a main body lumen to a branch body lumen. The prosthesis comprises a radially expansible support at one end, a circumferentially extending link at the other end and at least one frond extending axially therebetween. The prosthesis is configured to be deployed from a stepped diameter balloon with the support in the branch body lumen, with the circumferentially extending link in the main lumen and the frond extendable across the Os.
293 Citations
29 Claims
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1. A prosthesis for placement at an opening from a main body lumen to a branch body lumen, the prosthesis comprising:
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a radially expansible support comprising a first wall pattern, the support configured to be deployed in at least a portion of the branch body lumen, the support adapted to provide a first radial force to support a body lumen; at least two elongate, flexible fronds extending from an end of the support, each frond having a first end, a second end, and comprising first and second spaced apart filaments each having first and second ends, the first end of the first filament being directly connected to a first proximal apex of the radially expansible support, the first end of the second filament being directly connected to a second proximal apex of the radially expansible support, the first proximal apex being spaced apart from the second proximal apex, the second end of the second filament being coupled with the first filament at a location proximal of a transition portion of the frond, the transition portion comprising a second wall pattern different from the first wall pattern, the transition portion of the frond extending from an end of the support and configured to be positioned across the opening and into the main body lumen, the fronds comprising an elongate portion disposed proximal of the transition portion, the elongate portion having a third wall pattern different from the second wall pattern; at least one circumferential link connected to the second ends of the fronds, the second end of each frond connected to a corresponding single location of the circumferential link, the circumferential link spaced axially apart from the support by the fronds and adapted to provide a second radial force that is less than the first radial force; and a plurality of elongate side wall openings located at least partially proximal of the transition portion in between adjacent fronds sized and configured to receive a stent deployment device therethrough; the elongate flexible fronds, the support and the circumferential link defining a unitary body as deployed, the elongate side wall openings in between adjacent fronds for facilitating crossing of a main vessel stent therethrough when the support is positioned in the branch body lumen and the circumferential link is positioned in the main body lumen. - 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)
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24. A prosthesis for placement at an opening from a main body lumen to a branch body lumen, the prosthesis comprising:
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a radially expansible support, the support configured to be deployed in at least a portion of the branch body lumen; at least two elongate, flexible fronds extending from an end of the support, each frond having a transition zone adapted to traverse from a branch vessel side of an ostium into a main vessel side of the ostium, the transition zone having a distal end directly connected to a plurality of spaced apart apices of the branch vessel support and a proximal end opposite the distal end, the fronds further having an elongate portion extending proximally from the proximal end of the transition zone between first and second ends of the fronds; and a circumferential link connected to the second ends of the fronds, the circumferential link spaced axially apart from the support by the fronds; wherein the second end of each of the fronds is directly connected to the circumferential link at a corresponding single apex of the circumferential link; and wherein the transition zone provides a greater degree of scaffolding than the portion of the fronds extending proximally therefrom. - View Dependent Claims (25, 26, 27, 28, 29)
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Specification