Devices and methods for the treatment of vascular defects
First Claim
Patent Images
1. An apparatus, comprising:
- an expandable implant, configured to be deployed in a sac of an aneurysm, the expandable implant having a first portion and a second portion coupled to the first portion, the expandable implant being movable between a first configuration in which the first portion and the second portion are linearly aligned along an axis and a second configuration in which the second portion at least partially overlaps the first portion,wherein the first portion and the second portion are configured to assume a non-linear pre-determined configuration when deployed within the sac of the aneurysm and the expandable implant is in the second configuration, the first portion and the second portion collectively forming at least a portion of an outer boundary that defines an interior volume of the expandable implant when in the second configuration, at least the first portion or the second portion being completely offset from the axis in the second configuration,wherein the first portion and the second portion each have a concave surface and a convex surface, the convex surface of one of the first portion and the second portion being in apposition with the concave surface of the other of the first portion and the second portion when in the second configuration,a first porous portion havinga collapsed configuration for insertion through a blood vessel, wherein, in its collapsed configuration, the first porous portion has a first width and is symmetrical about a first porous portion axis, andan expanded configuration for occupying at least a portion of a sac of an aneurysm, wherein, in its expanded configuration, the first porous portion has a second width greater than the first width and is asymmetrical about the first porous portion axis; and
a second porous portion coupled to the first porous portion, the second porous portion havinga collapsed configuration for insertion through the blood vessel, wherein, in its collapsed configuration, the second porous portion has a third width and is symmetrical about a second porous portion axis, andan expanded configuration for occupying at least a portion of the sac of the aneurysm, wherein, in its expanded configuration, the second porous portion has a fourth width greater than the third width and is asymmetrical about the second porous portion axis; and
wherein the first porous portion and the second porous portion are configured to expand independently of each other; and
wherein the first portion and the second portion are each formed of a flattened two-layer ribbon-shaped strand formed of tubular mesh material.
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Abstract
Devices and methods for treating vascular defects, such as, for example, balloon-type aneurysms, are described herein. In one embodiment, an apparatus includes an insertion portion and an expandable implant. The expandable implant is configured to be deployed in an aneurysm and is coupled to the insertion portion. The expandable implant has a first portion and a second portion coupled to the first portion. The expandable implant is movable between a first configuration in which the first portion and the second portion are substantially linearly aligned and a second configuration in which the second portion at least partially overlaps the first portion.
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Citations
46 Claims
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1. An apparatus, comprising:
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an expandable implant, configured to be deployed in a sac of an aneurysm, the expandable implant having a first portion and a second portion coupled to the first portion, the expandable implant being movable between a first configuration in which the first portion and the second portion are linearly aligned along an axis and a second configuration in which the second portion at least partially overlaps the first portion, wherein the first portion and the second portion are configured to assume a non-linear pre-determined configuration when deployed within the sac of the aneurysm and the expandable implant is in the second configuration, the first portion and the second portion collectively forming at least a portion of an outer boundary that defines an interior volume of the expandable implant when in the second configuration, at least the first portion or the second portion being completely offset from the axis in the second configuration, wherein the first portion and the second portion each have a concave surface and a convex surface, the convex surface of one of the first portion and the second portion being in apposition with the concave surface of the other of the first portion and the second portion when in the second configuration, a first porous portion having a collapsed configuration for insertion through a blood vessel, wherein, in its collapsed configuration, the first porous portion has a first width and is symmetrical about a first porous portion axis, and an expanded configuration for occupying at least a portion of a sac of an aneurysm, wherein, in its expanded configuration, the first porous portion has a second width greater than the first width and is asymmetrical about the first porous portion axis; and a second porous portion coupled to the first porous portion, the second porous portion having a collapsed configuration for insertion through the blood vessel, wherein, in its collapsed configuration, the second porous portion has a third width and is symmetrical about a second porous portion axis, and an expanded configuration for occupying at least a portion of the sac of the aneurysm, wherein, in its expanded configuration, the second porous portion has a fourth width greater than the third width and is asymmetrical about the second porous portion axis; and wherein the first porous portion and the second porous portion are configured to expand independently of each other; and wherein the first portion and the second portion are each formed of a flattened two-layer ribbon-shaped strand formed of tubular mesh material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. An apparatus, comprising:
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a first porous portion having a collapsed configuration for insertion through a blood vessel, wherein, in its collapsed configuration, the first porous portion has a first width and is symmetrical about a first porous portion axis, and an expanded configuration for occupying at least a portion of a sac of an aneurysm, wherein, in its expanded configuration, the first porous portion has a second width greater than the first width and is asymmetrical about the first porous portion axis; and a second porous portion coupled to the first porous portion, the second porous portion having a collapsed configuration for insertion through the blood vessel, wherein, in its collapsed configuration, the second porous portion has a third width and is symmetrical about a second porous portion axis, and an expanded configuration for occupying at least a portion of the sac of the aneurysm, wherein, in its expanded configuration, the second porous portion has a fourth width greater than the third width and is asymmetrical about the second porous portion axis; and wherein the first porous portion and the second porous portion are configured to expand independently of each other, and wherein at least one of the first porous portion or the second porous portion is formed of a flattened two-layer ribbon-shaped strand formed of a tubular mesh material. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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39. An apparatus, comprising:
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an expandable implant configured to be deployed within an aneurysm and occupying at least a portion of a volume defined by a sac of the aneurysm and at least a portion of the expandable implant configured to be positioned across at least a portion of a neck of the aneurysm, the expandable implant having a collapsed configuration for insertion through a blood vessel and a three-dimensional expanded configuration when deployed within the aneurysm; the expandable implant having a first porous portion and a second porous portion, wherein at least one of the first porous portion or the second porous portion are formed of a flattened two-layer ribbon-shaped strand formed of tubular mesh material; the first porous portion having a collapsed configuration for insertion through a blood vessel and an expanded configuration, the first porous portion being elongate in its collapsed configuration; the second porous portion having a collapsed configuration for insertion through the blood vessel and an expanded configuration for occupying the sac of the aneurysm, the second porous portion being elongate in its collapsed configuration, the first porous portion and the second porous portion each configured to assume a nonlinear pre-determined configuration when deployed within the aneurysm and in their respective expanded configurations, the first porous portion and the second porous portion collectively forming at least a portion of an outer boundary that defines an interior region of the expandable implant when the expandable implant is in the three-dimensional expanded configuration; and the first porous portion and the second porous portion each having a concave surface and a convex surface, the convex surface of at least one of the first porous portion and the second porous portion being in apposition with the concave surface of at least one of the other of the first porous portion and the second porous portion when the first porous portion and the second porous portion are each in their respective expanded configurations. - View Dependent Claims (40, 41, 42, 43, 44, 45, 46)
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Specification