CATHETER SYSTEM FOR CONNECTING ADJACENT BLOOD VESSELS
First Claim
1. A catheter system for piercing a first wall of a first blood vessel and a second wall of a second blood vessel to create a fistula between the blood vessels, the system comprising:
- a catheter having an outer surface, a first lumen and a distal end insertable to a position wherein the distal end is adjacent a site within the first blood vessel for the fistula;
a piercing tool for creating the fistula, the piercing tool disposed within and extendable from the first lumen;
a first opening configured to receive the piercing tool and direct it in a first direction relative to the catheter;
a second opening configured to receive the piercing tool and direct it in a second direction relative to the catheter, the second direction being not equal to the first direction.
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Accused Products
Abstract
The catheter apparatus may be used to assist in creating a fistula between two adjacent blood vessels. The apparatus includes a catheter for inserting into a first blood vessel which lies adjacent to a second blood vessel, the catheter having a plurality of openings through which a physician may navigate a piercing tool. The physician maneuvers the tip of the catheter to a position within the first blood vessel adjacent to a portion of the first blood vessel wall in which the physician intends to create an opening. The physician may then rotate the piercing tool within the catheter and extend the piercing tool through one opening at a time, without rotating the catheter, until the physician chooses an opening that is properly aimed at the second blood vessel. Such a configuration allows for a wide arc of potential firing space.
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Citations
26 Claims
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1. A catheter system for piercing a first wall of a first blood vessel and a second wall of a second blood vessel to create a fistula between the blood vessels, the system comprising:
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a catheter having an outer surface, a first lumen and a distal end insertable to a position wherein the distal end is adjacent a site within the first blood vessel for the fistula;
a piercing tool for creating the fistula, the piercing tool disposed within and extendable from the first lumen;
a first opening configured to receive the piercing tool and direct it in a first direction relative to the catheter;
a second opening configured to receive the piercing tool and direct it in a second direction relative to the catheter, the second direction being not equal to the first direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A catheter system for piercing a first wall of a first blood vessel and a second wall of a second blood vessel to create a fistula between the blood vessels, the system comprising:
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a first catheter having a distal end insertable to a position wherein the distal end is adjacent a site within the first blood vessel for the fistula, an outer surface, a lumen, a piercing tool adjacent the distal end and disposed within the lumen, a first opening configured to receive the piercing tool from the lumen and direct it in a first direction relative to the first catheter, and a second opening configured to receive the piercing tool from the lumen and direct it in a second direction relative to the first catheter, wherein the second direction is not equal to the first direction;
a second catheter having a distal end insertable to a position wherein the distal end is adjacent a site within the second blood vessel for the fistula, the second catheter including adjacent the distal end a receptor having a distal opening and a proximal end, the receptor further including a channel leading from the opening toward the proximal end; and
one or more magnets disposed on at least one of the catheters to draw the piercing tool into the channel of the receptor. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification