Endoprosthesis for controlled contraction and expansion
First Claim
1. An endoprosthesis, comprising:
- a plurality of annular elements, each annular element connected to an adjacent annular element at at least one connection location;
each annular element including an interconnected series of strut members, selected strut members each connected to an adjacent strut member at a longitudinal apex and extending to a strut end portion at a location on a longitudinally opposite side of the annular element from the apex;
at least one strut member includes;
a first end portion at a first end of the strut member, the first end is located at the strut end portion, an intermediate portion hingedly connected to the first end portion, and a second end portion hingedly connected to the intermediate portion and extending to the apex; and
wherein the endoprosthesis has a delivery diameter when in a delivery condition and a deployed diameter when in a deployed condition.
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Accused Products
Abstract
An endoprosthesis that has a plurality of annular elements, each connected to an adjacent annular element at at least one connection location. Each annular element includes an interconnected series of struts, selected strut members of which are each connected to adjacent strut members at a longitudinal apex. The selected strut members extend to a strut end portion at a location on the longitudinally opposite site of the annular element from the apex. At least one of the strut members includes a first end portion at a first end of the strut member, which is located at the strut end portion, an intermediate portion hingedly connected to the first end portion, and a second end portion hingedly connected to the intermediate portion and extending to the apex. The endoprosthesis has a delivery diameter when in a delivery condition and a deployed diameter when in a deployed condition. Some of the strut members can have a nesting feature that is configured for nestingly receiving another strut member when the endoprosthesis is in the delivery condition. A scaffolding body of the endoprosthesis can have an inner and outer component, each having a set of interconnected strut members. The interconnected strut members of one component overlap those of the other to define a cooperating cell pattern. Also, the body of the endoprosthesis can be configured to naturally tend to contract when the body is smaller than a predetermined diameter and naturally tend to expand when the body is larger than a predetermined diameter.
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Citations
53 Claims
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1. An endoprosthesis, comprising:
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a plurality of annular elements, each annular element connected to an adjacent annular element at at least one connection location;
each annular element including an interconnected series of strut members, selected strut members each connected to an adjacent strut member at a longitudinal apex and extending to a strut end portion at a location on a longitudinally opposite side of the annular element from the apex;
at least one strut member includes;
a first end portion at a first end of the strut member, the first end is located at the strut end portion, an intermediate portion hingedly connected to the first end portion, and a second end portion hingedly connected to the intermediate portion and extending to the apex; and
wherein the endoprosthesis has a delivery diameter when in a delivery condition and a deployed diameter when in a deployed condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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- 16. An endoprosthesis, comprising a plurality of strut members interconnected to form a repeating pattern of interconnected cells, each cell including at least two arrowhead portions extending longitudinally and directed in opposite directions, each arrowhead portion connected with an arrowhead portion of an adjacent cell, wherein the cells are connected in a generally tubular shape having a delivery condition for facilitating delivery of the endoprosthesis to a deployment site and a deployed condition for deployment in a vessel at the deployment site.
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18. An endoprosthesis, comprising:
a cell-defining structure radially expandable from a first diameter to a second diameter, the cell-defining structure defining at least one cell, wherein the cell-defining structure includes;
a first set of strut members defining a base cell section; and
a second set of strut members defining an upper cell section having a generally trapezoidal shape when the cell-defining structure is in the second diameter, the upper cell section having generally parallel opposing sides, wherein one of the generally parallel opposing sides of the upper cell section is generally aligned with a first side of the base cell section. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. An endoprosthesis, comprising:
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a generally tubular endoprosthesis body radially expandable from a first diameter and a second diameter, the endoprosthesis body comprising a plurality of annular elements, including a first series of interconnected strut members having a repeating group of;
a first generally longitudinal strut member, a first angled strut member contoured to have a nesting feature, and a second longitudinal strut member;
wherein the nesting feature is configured for nestingly receiving at least one longitudinal strut member therein when the endoprosthesis body has the first diameter. - View Dependent Claims (32, 33)
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34. An endoprosthesis comprising a generally tubular scaffolding body, the scaffolding body having a delivery configuration at a first diameter and a deployed configuration at a second diameter, the second diameter being greater than the first diameter, the scaffolding body having an outer component including a first set of interconnected strut members, the scaffolding body further having an inner component including a second set of interconnected strut members;
- the first set of interconnected strut members overlapping the second set of interconnected strut members to define a cooperating cell pattern.
- View Dependent Claims (35, 36, 37)
- 38. An endoprosthesis, comprising a generally tubular scaffolding body configured to have a compressed diameter and an expanded diameter, the body having a first bias when in a first range of diameter between the compressed and expanded diameters, the body having a second bias when in a second range of diameter between the first range and the expanded diameter, wherein the second bias is expansive and has a greater expansive magnitude than the first bias.
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51. A method of manufacturing an endoprosthesis, comprising:
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setting a contractile portion of an endoprosthesis body to bias the body toward a contracted diameter; and
setting an expansive portion of the body to bias the body toward an expanded diameter that is larger than the contracted diameter. - View Dependent Claims (52, 53)
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Specification