Device for occluding vascular defects
First Claim
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1. A multi-layer occluder for treating a target site within the body, the occluder comprising:
- a first layer comprising braided strands of metallic material; and
a second layer coupled to said first layer and comprising braided strands of polymeric material, wherein at least one of said first or second layers is configured to facilitate thrombosis,wherein said first and second layers are tubular in shape and are disposed in an overlying relationship with respect to one another along a common central axis extending therethrough, at least one of said first or second layers comprising at least one plane of occlusion oriented generally transverse to the central axis, and wherein said first and second layers are configured to be radially constrained to a reduced configuration in relation to the central axis through the application of external force and to subsequently assume an expanded configuration when the external force is removed,wherein the expanded configuration comprises a pair of disks oriented generally transverse to the central axis and a cylindrical portion extending therebetween, the pair of disks having a larger cross-sectional diameter than the cylindrical portion, andwherein the expanded configuration comprises a waist extending between one of the disks and the cylindrical portion for facilitating articulation therebetween, the waist having a smaller cross-sectional diameter than the cylindrical portion.
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Abstract
A multi-layer occluder for treating a target site within the body is provided. The occluder may include first and second layers. For example, the first layer may include braided strands of metallic material, and the second layer may include braided strands of polymeric material. At least one of the first or second layers may be configured to facilitate thrombosis.
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Citations
45 Claims
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1. A multi-layer occluder for treating a target site within the body, the occluder comprising:
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a first layer comprising braided strands of metallic material; and a second layer coupled to said first layer and comprising braided strands of polymeric material, wherein at least one of said first or second layers is configured to facilitate thrombosis, wherein said first and second layers are tubular in shape and are disposed in an overlying relationship with respect to one another along a common central axis extending therethrough, at least one of said first or second layers comprising at least one plane of occlusion oriented generally transverse to the central axis, and wherein said first and second layers are configured to be radially constrained to a reduced configuration in relation to the central axis through the application of external force and to subsequently assume an expanded configuration when the external force is removed, wherein the expanded configuration comprises a pair of disks oriented generally transverse to the central axis and a cylindrical portion extending therebetween, the pair of disks having a larger cross-sectional diameter than the cylindrical portion, and wherein the expanded configuration comprises a waist extending between one of the disks and the cylindrical portion for facilitating articulation therebetween, the waist having a smaller cross-sectional diameter than the cylindrical portion. - 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, 24, 25, 26)
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27. A multi-layer occluder for treating a target site within the body, the occluder comprising:
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a first layer comprising braided strands of metallic material; and a second layer coupled to said first layer and comprising braided strands of polymeric material, wherein at least one of said first or second layers is configured to facilitate thrombosis, wherein each of said first and seconds layers comprises a tubular member having proximal and distal ends corresponding to the ends of the plurality of braided strands, wherein the proximal ends of each tubular member are coupled together and the distal ends of each tubular member are coupled together so as to prevent the first and second layers from unraveling, wherein said first and second layers are disposed in an overlying relationship with respect to one another along a common central axis extending therethrough, at least one of said first or second layers comprising at least one plane of occlusion oriented generally transverse to the central axis, and wherein said first and second layers are configured to be radially constrained to a reduced configuration in relation to the central axis through the application of external force and to subsequently assume an expanded configuration when the external force is removed. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
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Specification