Occlusive device
First Claim
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1. An aneurysm embolization device, comprising:
- a body portion having a first end, a second end, and a side extending between the first and second ends, the body portion being self-expandable from a compressed state to a first expanded configuration, wherein, when the body portion is in an expanded, unconstrained state the second end comprises a generally flat surface and the side has a concave outer surface, and wherein the body portion is configured to be positioned at a neck of an intracranial aneurysm in the first expanded configuration such that the outer surface is in apposition with the vessel wall along the neck and presses outwardly against the vessel wall at the neck; and
an atraumatic tip portion extending from the first end of the body portion and being self-expandable to a second expanded configuration, different in shape or size from the first expanded configuration,wherein the body portion and the tip portion comprise a single, continuous piece of material.
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Abstract
An aneurysm embolization device can include a body having a single, continuous piece of material that is shape set into a plurality of distinct structural components. For example, the device can have an expandable component and an atraumatic tip portion extending therefrom. Further, the tip portion can be configured to enable the device to be implanted within the aneurysm while tending to mitigate risk of puncturing the aneurysm dome or otherwise assist in framing the aneurysm in advance of placement of additional embolic material.
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Citations
25 Claims
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1. An aneurysm embolization device, comprising:
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a body portion having a first end, a second end, and a side extending between the first and second ends, the body portion being self-expandable from a compressed state to a first expanded configuration, wherein, when the body portion is in an expanded, unconstrained state the second end comprises a generally flat surface and the side has a concave outer surface, and wherein the body portion is configured to be positioned at a neck of an intracranial aneurysm in the first expanded configuration such that the outer surface is in apposition with the vessel wall along the neck and presses outwardly against the vessel wall at the neck; and an atraumatic tip portion extending from the first end of the body portion and being self-expandable to a second expanded configuration, different in shape or size from the first expanded configuration, wherein the body portion and the tip portion comprise a single, continuous piece of material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An intracranial aneurysm embolization device, comprising:
a tubular body having first and second portions being self-expandable from a first cross-sectional dimension, the first portion being expandable to an expanded cross-sectional dimension greater than an expanded cross-sectional dimension of the second portion, wherein, when the device is in an expanded, unconstrained state; the first portion has a barrel shape comprising a first end surface, a second end surface, and a body portion extending therebetween, the first end surface being generally flat and the body portion being concave in a direction away from the body portion, and wherein the first portion is configured to be expanded into apposition with the vessel wall along a neck of an intracranial aneurysm and press outwardly against the vessel wall at the neck to anchor the device at the neck, and the second portion is coupled to the first end surface and, when the tubular body is in an expanded configuration, the second portion extends away from the first portion in a substantially helical path. - View Dependent Claims (20, 21, 22, 23, 24, 25)
Specification