Bifurcation stent system and method
AssigneeADVANCED STENT TECHNOLOGIES, INC., A Delaware Corporation
InventorsCharles J. Davidson, Gil M. Vardi, Eric Williams, Stephen Kao
Life of this patent
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Abstract
Methods and apparatus for deploying a stent (20) in a bifurcated body lumen (10). The stent comprises a tubular body defining a lumen therethrough and having a side hole. The tubular body has a first portion (28) with a first wall mass and a second portion (26) with a second wall mass. The first wall mass is less than the second wall mass. When deployed, first portions of two stents overlap in a bifurcated body lumen. The side holes of the two stents are aligned with ostium of branch vessels (14, 16) at a bifurcated body lumen.
Claims20
1 A stent for placement in a bifurcated body lumen, said stent comprising:
- a tubular body defining a lumen therethrough and having a side hole, said body having a first portion with a first wall mass and a second portion with a second wall mass, wherein said first wall mass is less than said second wall mass.
The stent as in claim 1 wherein said first wall mass is about one-half said second wall mass.
The stent as in claim 1 wherein said first portion has a first cell density and said second portion has a second cell density, wherein said first cell density is less than said second cell density.
The stent as in claim 1 wherein said first portion comprises a first plurality of struts and said second portion comprises a second plurality of struts, at least some of said first plurality of struts having a smaller cross-sectional area than said second plurality of struts.
The stent as in claim 1 wherein said first portion comprises a first plurality of struts and said second portion comprises a second plurality of struts, said second plurality of struts defining a greater cell density than said first plurality of struts.
The stent as in claim 1 wherein said first portion comprises said side hole.
The stent as in claim I wherein said first portion and said second portion have first and second wall thickness, respectively, said first wall thickness being less than said second wall thickness.
A stent system for placement in a bifurcated body lumen having a main vessel and first and second branch vessels, said system comprising:
- a first tubular stent body having a first portion and a second portion, said first stent body having a side hole;
- and
- a second tubular stent body having a first portion and a second portion, said second stent body having a side hole;
- wherein said first stent body first portion is disposed within and generally coaxially aligned with said second stent body first portion, and said first stent body second portion extends through said side hole of said second stent body.
A method for deploying a stent in a bifurcated body lumen having a main vessel and first and second branch vessels, said method comprising:
- providing first and second tubular stent bodies each having a first portion, a second portion, and a side hole;
- positioning said first stent body within said bifurcated lumen so that said first portion is positioned within said main vessel and said second portion is positioned within said first branch vessel, said positioning further comprising alignment of said first stent body side hole with an ostium of said second branch vessel;
- expanding said first stent body.
- positioning said second stent body so that said first portion is generally aligned with and within said first stent body first portion in said main vessel, and said second portion extends through said first stent body side hole and into said second branch vessel, said positioning further comprising alignment of said second stent body side hole with an ostium of said first branch vessel;
- and
- expanding said second stent body.
A kit comprising:
- a stent as in claim 1;
- and
- instructions for use setting forth a method for positioning said stent in a bifurcated body lumen having a main vessel and first and second branch vessels.
Dependencies are inferred from the claim text.