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US 12,310,832 B2Granted
Biliary stents and methods
AssigneeBoston Scientific Scimed, Inc.
InventorsKenneth F. Binmoeller, Sieu T. Duong, Hanh Duong, Thao Nguyen
Life of this patent
Estimating the term…
Abstract
A tissue lumen stent is provided with a body having an elongated tubular configuration and a foreshortened configuration. In the foreshortened configuration, downstream and upstream ends of the body expand radially into downstream and upstream flange structures, leaving a generally cylindrical saddle region therebetween. In some embodiments, the flange structures are non-symmetrical with respect to one another. Systems and methods of using the stents are also disclosed.
Claims20
A tissue lumen stent, comprising:
- a body having an elongated tubular configuration and a deployed configuration;
- wherein, when in the deployed configuration and deployed in tissue, a first end and an opposing second end of the body expand radially into respective first and second flange structures leaving a substantially cylindrical saddle region therebetween;
- wherein at least one of the first flange structure and the second flange structure comprises at least first and second points of inflection that define first and second segments of the flange structure, wherein an angle of the first inflection point facing toward a center plane of the cylindrical saddle region and defined by the first segment and the cylindrical saddle region is at least as great as an opposing angle of the second inflection point facing away from the center plane and defined by the first segment and the second segment;
- wherein the first segment of the at least one of the first and second flange structures comprises a portion that increases in diameter and the second segment of the at least one of the first and second flange structures comprises a portion that decreases in diameter;
- and
- wherein the first flange structure, the second flange structure, or both, comprise an outwardmost opening having a diameter larger than a maximum diameter of the cylindrical saddle region.
3 more elements
A tissue lumen stent, comprising:
- a body having an elongated tubular configuration and a deployed configuration;
- wherein, when in the deployed configuration and deployed in tissue, a first end and an opposing second end of the body expand radially into respective first and second flange structures leaving a substantially cylindrical saddle region therebetween;
- wherein at least one of the first flange structure and the second flange structure comprises at least first and second points of inflection that define first and second segments of the flange structure, wherein an angle of the first inflection point facing toward a center plane of the cylindrical saddle region and defined by the first segment and the cylindrical saddle region is at least as great as an opposing angle of the second inflection point facing away from the center plane and defined by the first segment and the second segment;
- wherein in the deployed configuration and deployed in tissue a maximum diameter of the cylindrical saddle region is between and inclusive of 5 mm and 20 mm, and a maximum diameter of the at least one of the first and second flange structures is between and inclusive of 20 mm and 40 mm;
- and
- wherein the first flange structure, the second flange structure, or both, comprise an outwardmost opening having a diameter larger than a maximum diameter of the cylindrical saddle region.
3 more elements
A tissue lumen stent, comprising:
- a body having an elongated tubular configuration and a deployed configuration;
- wherein, when in the deployed configuration and deployed in tissue, a first end and an opposing second end of the body expand radially into respective first and second flange structures leaving a substantially cylindrical saddle region therebetween;
- wherein the first flange structure comprises at least first and second points of inflection that define first and second segments of the flange structure, wherein an angle of the first inflection point facing toward a center plane of the cylindrical saddle region and defined by the first segment and the cylindrical saddle region is at least as great as an opposing angle of the second inflection point facing away from the center plane and defined by the first segment and the second segment;
- wherein in the elongated tubular configuration the body has a maximum diameter between and inclusive of 0.8 mm and 4.5 mm and in the deployed configuration the at least one of the first and second flange structures has a maximum diameter between and inclusive of 5 mm and 40 mm;
- and
- wherein the first flange structure comprises a larger maximum diameter than a maximum diameter of the second flange structure.
3 more elements
Dependencies are inferred from the claim text.