Multiple layer filamentary devices for treatment of vascular defects
First Claim
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1. A method of treating a patient, comprising:
- providing a device for treatment of a patient'"'"'s vasculature, comprising;
a self-expanding resilient permeable shell having a proximal end, a distal end, a longitudinal axis and further including a plurality of elongate resilient filaments with a woven structure secured relative to each other at proximal ends and distal ends thereof, a radially constrained elongated state configured for delivery within a microcatheter, and an expanded relaxed state with a globular configuration relative to the radially constrained elongated state, and an inner structure of filamentary members disposed within an interior volume of the resilient permeable shell and secured to the permeable shell at an end thereof, the inner structure including a plurality of elongate resilient filaments with a woven structure secured relative to each other at least at the proximal ends thereof, which has a radially constrained elongated state which is shorter than the permeable shell in its radially constrained state and which has an expanded relaxed state relative to the radially constrained state;
advancing the device to a treatment site within a patient'"'"'s vasculature in a constrained elongated state; and
deploying the device within a vascular defect at the treatment site within the patient'"'"'s vasculature such that the permeable shell and inner structure self-expand to their respective expanded states.
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Accused Products
Abstract
Braid-balls suitable for aneurysm occlusion and/or parent vessel occlusion/sacrifice (e.g., in treating neurovascular defects) are disclosed. Especially for aneurysm treatment, but also for either one of the aforementioned treatments, the form of the ball is very important. In particular, the density of the device is paramount in applications where braid itself is intended to moderate or stop blood flow—allowing thrombosis within a volume formed by the ball.
496 Citations
13 Claims
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1. A method of treating a patient, comprising:
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providing a device for treatment of a patient'"'"'s vasculature, comprising; a self-expanding resilient permeable shell having a proximal end, a distal end, a longitudinal axis and further including a plurality of elongate resilient filaments with a woven structure secured relative to each other at proximal ends and distal ends thereof, a radially constrained elongated state configured for delivery within a microcatheter, and an expanded relaxed state with a globular configuration relative to the radially constrained elongated state, and an inner structure of filamentary members disposed within an interior volume of the resilient permeable shell and secured to the permeable shell at an end thereof, the inner structure including a plurality of elongate resilient filaments with a woven structure secured relative to each other at least at the proximal ends thereof, which has a radially constrained elongated state which is shorter than the permeable shell in its radially constrained state and which has an expanded relaxed state relative to the radially constrained state; advancing the device to a treatment site within a patient'"'"'s vasculature in a constrained elongated state; and deploying the device within a vascular defect at the treatment site within the patient'"'"'s vasculature such that the permeable shell and inner structure self-expand to their respective expanded states. - View Dependent Claims (2)
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3. A self-expanding implant for treating a patient'"'"'s vasculature, the implant comprising:
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a resilient, permeable shell having proximal and distal end portions, an interior volume, a longitudinal axis, and a plurality of elongate, woven filaments secured relative to each other at proximal end portions and distal end portions thereof, the shell having a radially constrained, elongated state configured for delivery within a microcatheter and an expanded state relative to its radially constrained, elongated state; and an inner structure, disposed within the shell interior volume, comprising a plurality of elongate, woven filaments and being secured to the shell at the proximal end portion thereof, the inner structure having a radially constrained, elongated state shorter than the radially constrained, elongated state of the shell, the inner structure having an expanded state relative to its radially constrained, elongated state, wherein when the shell and the inner structure self-expand to their respective expanded states, a free, unsecured end portion of the inner structure is longitudinally separated from an inner surface of the shell distal end portion by an internal gap. - View Dependent Claims (4, 5, 6)
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7. An embolic device for treatment a patient'"'"'s vasculature, the device comprising:
a braided structure having an interior volume and comprising a plurality of wires that are secured relative to each other at proximal and distal end portions of the structure to form respective proximal and distal hubs, the proximal and distal hubs disposed exterior to the interior volume and being inset into the interior volume, the structure being adapted to (i) compress into a compressed state, in which the proximal and distal hubs are longitudinally separated at a first distance, for delivery through a microcatheter and (ii) self-expand into an expanded shape, in which the proximal and distal hubs are longitudinally separated at a second distance, less than the first distance, upon release from constraint. - View Dependent Claims (8, 9, 10, 11, 12, 13)
Specification