Fistula formation devices and methods therefor
First Claim
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1. A system for creating a fistula between two vessels, comprising:
- a first catheter comprising a first magnet; and
a second catheter comprising a second magnet;
wherein at least one of the first and second catheters comprises a fistula-forming element; and
wherein the first magnet is a focused magnet characterized by a first magnetization pattern comprising a first plurality of magnetic flux vectors, wherein each of the first plurality of magnetic flux vectors intersects a first magnetic origin located a first measurable distance away from the first magnet.
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Abstract
Described here are devices, systems, and methods for forming a fistula between two blood vessels. Generally, the systems may comprise a first catheter and a second catheter, which may comprise one or more fistula-forming elements. The first and second catheters may comprise one or more magnets, which may be used to assist in bringing the first and catheters in closer proximity to facilitate fistula formation. In some variations, the magnet may have a plurality of magnetic domains each characterized by a magnetic flux vector, with the magnetic flux vectors of the magnet passing through a common magnetic origin.
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Citations
15 Claims
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1. A system for creating a fistula between two vessels, comprising:
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a first catheter comprising a first magnet; and a second catheter comprising a second magnet; wherein at least one of the first and second catheters comprises a fistula-forming element; and wherein the first magnet is a focused magnet characterized by a first magnetization pattern comprising a first plurality of magnetic flux vectors, wherein each of the first plurality of magnetic flux vectors intersects a first magnetic origin located a first measurable distance away from the first magnet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for creating a fistula between two vessels, comprising:
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a first catheter comprising a first magnet, wherein the first magnet is a focused magnet comprising a first magnetization pattern characterized at least partially with a first plurality of magnetic flux vectors, wherein a first portion of the first plurality of magnetic flux vectors is oriented in a first orientation and a second portion of the first plurality of magnetic flux vectors is oriented in a second orientation non-parallel to the first orientation; and a second catheter comprising a second magnet; wherein at least one of the first and second catheters comprises a fistula-forming element. - View Dependent Claims (12, 13, 14, 15)
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Specification