Fistula flow disruptor methods
First Claim
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1. A method of disrupting flow through a fistula, the method comprising:
- advancing a microcatheter through a guide catheter, the guide catheter having a distal end at a first point in vasculature, the microcatheter having a distal end;
advancing a steerable microwire through the guide catheter, the steerable microwire extending distal to the distal end of the microcatheter;
after advancing the steerable microwire through the guide catheter, further advancing and steering the steerable microwire to a second point in the vasculature, the fistula being proximate to the second point in the vasculature;
after further advancing and steering the steerable microwire, advancing the microcatheter over the steerable microwire to the second point in the vasculature;
after further advancing the microcatheter over the steerable microwire to the second point in the vasculature, removing the steerable microwire;
advancing a flow disruptor through the microcatheter to the second point in the vasculature, the flow disruptor comprising, in an expanded state;
a first bulb having a first braid angle,a second bulb,a first neck between the first bulb and the second bulb,a third bulb,a second neck between the second bulb and the third bulb,a fourth bulb having a second braid angle, the second neck having a third braid angle less than the first braid angle and the second braid angle, anda third neck between the third bulb and the fourth bulb;
expanding the first bulb and the second bulb on a first side of the fistula;
extending the second neck through the fistula; and
expanding the third bulb and the fourth bulb on a second side of the fistula.
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Abstract
A method of disrupting flow through a fistula may include deploying a flow disruptor across the fistula through a microcatheter at a point in vasculature proximate to the fistula. Deploying the flow disruptor may include expanding a first bulb on a first side of the fistula and expanding a second bulb on a second side of the fistula, the flow disruptor including a neck between the first bulb and the second bulb and traversing the fistula. The first bulb may have a first braid angle, the second bulb may have a second braid angle, and the neck may have a third braid angle less than the first braid angle and the second braid angle.
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Citations
20 Claims
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1. A method of disrupting flow through a fistula, the method comprising:
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advancing a microcatheter through a guide catheter, the guide catheter having a distal end at a first point in vasculature, the microcatheter having a distal end; advancing a steerable microwire through the guide catheter, the steerable microwire extending distal to the distal end of the microcatheter; after advancing the steerable microwire through the guide catheter, further advancing and steering the steerable microwire to a second point in the vasculature, the fistula being proximate to the second point in the vasculature; after further advancing and steering the steerable microwire, advancing the microcatheter over the steerable microwire to the second point in the vasculature; after further advancing the microcatheter over the steerable microwire to the second point in the vasculature, removing the steerable microwire; advancing a flow disruptor through the microcatheter to the second point in the vasculature, the flow disruptor comprising, in an expanded state; a first bulb having a first braid angle, a second bulb, a first neck between the first bulb and the second bulb, a third bulb, a second neck between the second bulb and the third bulb, a fourth bulb having a second braid angle, the second neck having a third braid angle less than the first braid angle and the second braid angle, and a third neck between the third bulb and the fourth bulb; expanding the first bulb and the second bulb on a first side of the fistula; extending the second neck through the fistula; and expanding the third bulb and the fourth bulb on a second side of the fistula. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of disrupting flow through a fistula, the method comprising:
deploying a flow disruptor across the fistula through a microcatheter at a point in vasculature proximate to the fistula, wherein deploying the flow disruptor comprises; expanding a first plurality of bulbs on a first side of the fistula, expanding a second plurality of bulbs on a second side of the fistula, the second side of the fistula longitudinally opposite the first side of the fistula, and extending a neck through the fistula, the neck between the first plurality of bulbs and the second plurality of bulbs. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A method of disrupting flow through a fistula, the method comprising:
deploying a flow disruptor across the fistula through a microcatheter at a point in vasculature proximate to the fistula, wherein deploying the flow disruptor comprises; expanding a first bulb on a first side of the fistula, the first bulb having a first braid angle, and expanding a second bulb on a second side of the fistula, the second bulb having a second braid angle, the flow disruptor comprising a neck between the first bulb and the second bulb, the neck traversing the fistula, the neck having a third braid angle less than the first braid angle and the second braid angle. - View Dependent Claims (17, 18, 19, 20)
Specification