Methods and apparatus for flow restoration
First Claim
1. A removable, integrated apparatus-thrombus mass, comprising a thrombus at least partially engaged with an apparatus, wherein the apparatus comprises:
- a self-expandable structure comprising a first plurality of cells, the structure having a proximal end and a distal end, the proximal end and the distal end being open, and the first plurality of cells being expanded into at least a portion of the thrombus;
a tapering portion comprising a second plurality of cells, the tapering portion disposed toward the proximal end of the structure;
a connection portion, at which the tapering portion converges, located at a proximal end of the tapering portion; and
a push or guide wire, wherein a distal end of the push or guide wire is non-releasably attached at or adjacent to the connection portion,wherein the apparatus is self-expandable and pre-formed to assume a volume-enlarged form and, in the volume-enlarged form, takes the form of a longitudinally open tube tapering toward the connection portion.
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Accused Products
Abstract
Methods for restoring blood flow in occluded blood vessels using an apparatus having a self-expandable distal segment that is pre-formed to assume a superimposed structure in an unconstrained condition but can be made to take on a volume-reduced form making it possible to introduce it with a microcatheter and a push wire arranged at the proximal end, with the distal segment in its superimposed structure assuming the form of a longitudinally open tube and having a mesh structure of interconnected strings or filaments or struts. In a preferred embodiment, the distal segment has a tapering structure at its proximal end where the strings or filaments or struts converge at a connection point.
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Citations
34 Claims
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1. A removable, integrated apparatus-thrombus mass, comprising a thrombus at least partially engaged with an apparatus, wherein the apparatus comprises:
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a self-expandable structure comprising a first plurality of cells, the structure having a proximal end and a distal end, the proximal end and the distal end being open, and the first plurality of cells being expanded into at least a portion of the thrombus; a tapering portion comprising a second plurality of cells, the tapering portion disposed toward the proximal end of the structure; a connection portion, at which the tapering portion converges, located at a proximal end of the tapering portion; and a push or guide wire, wherein a distal end of the push or guide wire is non-releasably attached at or adjacent to the connection portion, wherein the apparatus is self-expandable and pre-formed to assume a volume-enlarged form and, in the volume-enlarged form, takes the form of a longitudinally open tube tapering toward the connection portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A removable, integrated apparatus-thrombus mass, comprising a thrombus at least partially engaged with a self-expandable apparatus, wherein the apparatus comprises:
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a self-expandable structure comprising a first plurality of cells, the structure having a proximal end and a distal end, the proximal end and the distal end being open, and the first plurality of cells being expanded into and interlocked with at least a portion of the thrombus; a tapering portion comprising a second plurality of cells, the tapering portion disposed toward the proximal end of the structure; and a connection member, toward which the tapering portion converges, located at a proximal end of the tapering portion; and a push or guide wire, and wherein a distal end of the push or guide wire is non-releasably attached to the tapering portion at or adjacent to the connection member, wherein the self-expandable apparatus is configured to assume a volume-enlarged form and, in the volume-enlarged form, to take the form of a longitudinally open tube; and wherein the thrombus extends outside of the structure. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification