Devices, systems, and methods for the treatment of vascular defects
First Claim
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1. An occlusive device for treating an aneurysm, wherein a neck of the aneurysm opens to a blood vessel, the device comprising:
- a first elongated mesh having a low-profile state for intravascular delivery to the aneurysm and an expanded state in which the first elongated mesh is curved about a first axis to form a first band, the first elongated mesh having a first length and a generally constant width along the entire first length; and
a second elongated mesh having a low-profile state for intravascular delivery to the aneurysm and an expanded state in which the second elongated mesh is curved about a second axis different than the first axis to form a second band, the second elongated mesh having a second length and a generally constant width along the entire second length, wherein a distal end of the second elongated mesh is coupled to a proximal end of the first elongated mesh,wherein the second band is positioned radially inward of the first band such that the device includes first and second overlap regions in which the first band overlaps the second band, and wherein the first and second overlap regions are spaced apart from one another along a circumference of the first band.
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Abstract
Devices, systems, and methods for treating vascular defects are disclosed herein. One aspect of the present technology, for example, is directed toward an occlusive device that includes a first mesh having an expanded state in which it curves about a first axis to form a first band, and a second mesh having an expanded state in which it curves about a second axis different than the first axis to form a second band. The second band may be positioned radially inward of the first band such that the device includes first and second overlap regions in which the first band overlaps the second band.
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Citations
24 Claims
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1. An occlusive device for treating an aneurysm, wherein a neck of the aneurysm opens to a blood vessel, the device comprising:
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a first elongated mesh having a low-profile state for intravascular delivery to the aneurysm and an expanded state in which the first elongated mesh is curved about a first axis to form a first band, the first elongated mesh having a first length and a generally constant width along the entire first length; and a second elongated mesh having a low-profile state for intravascular delivery to the aneurysm and an expanded state in which the second elongated mesh is curved about a second axis different than the first axis to form a second band, the second elongated mesh having a second length and a generally constant width along the entire second length, wherein a distal end of the second elongated mesh is coupled to a proximal end of the first elongated mesh, wherein the second band is positioned radially inward of the first band such that the device includes first and second overlap regions in which the first band overlaps the second band, and wherein the first and second overlap regions are spaced apart from one another along a circumference of the first band. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An occlusive device for treating an aneurysm, wherein a neck of the aneurysm opens to a blood vessel, the device comprising:
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a first elongated mesh strip having a low-profile state for intravascular delivery to the aneurysm and an expanded state in which the first elongated mesh strip is curved about a first axis to form a first band encircling at least a portion of a first opening; a second elongated mesh strip having a low-profile state for intravascular delivery to the aneurysm and an expanded state in which the second elongated mesh strip is curved about a second axis to form a second band encircling at least a portion of a second opening, wherein a distal end of the second elongated mesh strip is coupled to a proximal end of the first elongated mesh strip; and a third elongated mesh strip having a low-profile state for intravascular delivery to the aneurysm and an expanded state in which the third elongated mesh strip is curved about a third axis to form a third band encircling at least a portion of a third opening, wherein a distal end of the third elongated mesh strip is coupled to a proximal end of the second elongated mesh strip; wherein, when the device is in an expanded, unconstrained state, the first, second, and third openings are aligned with first, second, and third planes, respectively, and the first second and third planes are perpendicular to one another, and wherein the first and second elongated mesh strips having respective first and second lengths, and wherein each of the first and second elongated mesh strips have a generally constant width along their entire respective first second lengths. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for treating an aneurysm with an occlusive device including a first elongated mesh and a second elongated mesh, wherein a neck of the aneurysm opens to a blood vessel, the method comprising:
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pushing the first elongated mesh distally from a delivery catheter into an interior region of the aneurysm, the first elongated mesh having a first length and a generally constant width along the entire first length, wherein pushing the first elongated mesh distally includes curving the first elongated mesh back on itself to form a first band that expands against and conforms to an inner surface of the aneurysm wall; pushing a second elongated mesh distally from the delivery catheter into the interior region of the aneurysm, the second elongated mesh having a second length and a generally constant width along the entire second length, wherein a distal end of the second elongated mesh is coupled to a proximal end of the first elongated mesh, and wherein pushing the second elongated mesh distally includes curving the second elongated mesh back on itself to form a second band that expands against and conforms to the inner surface of the aneurysm wall, wherein the first and second bands intersect at first and second overlap regions when the device is in an expanded state; and positioning the device within the aneurysm such that the first or second overlap region is positioned at the neck of the aneurysm, thereby substantially covering the neck and reducing blood flow from a parent vessel through the neck. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification