Methods for puncturing an expandable member to confirm advancement into a body passage
First Claim
1. A method of targeting a second passage from a first passage to effect retroperfusion in the second passage, the method comprising:
- expanding an expandable device in the second passage, the expandable device comprising a balloon;
advancing a needle from a first catheter in the first passage out of the first passage and into the second passage to form a fistula between the first passage and the second passage, wherein advancing the needle comprises puncturing the expandable device;
monitoring the needle puncturing the balloon to confirm advancement of the needle into the second passage; and
advancing a guidewire from the first passage, through the needle, and into the expandable device, wherein collapsing of the expandable device closes around the guidewire to grip the guidewire in the second passage.
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Accused Products
Abstract
A device includes a first end portion, a second end portion, an intermediate portion, and a graft material. The first end portion has a first end diameter. The second end portion has a second end diameter smaller than the first end diameter. The first end portion comprises a first material. The second end portion comprises a second material different than the first material. The intermediate portion is between the first end portion and the second end portion. The intermediate portion tapers between the first end portion and the second end portion. The graft material is coupled to at least the intermediate portion.
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Citations
20 Claims
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1. A method of targeting a second passage from a first passage to effect retroperfusion in the second passage, the method comprising:
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expanding an expandable device in the second passage, the expandable device comprising a balloon; advancing a needle from a first catheter in the first passage out of the first passage and into the second passage to form a fistula between the first passage and the second passage, wherein advancing the needle comprises puncturing the expandable device; monitoring the needle puncturing the balloon to confirm advancement of the needle into the second passage; and advancing a guidewire from the first passage, through the needle, and into the expandable device, wherein collapsing of the expandable device closes around the guidewire to grip the guidewire in the second passage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of targeting a second passage from a first passage to effect retroperfusion in the second passage, the method comprising:
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expanding an expandable device in the second passage, the expandable device comprising a balloon; advancing a needle from a first catheter in the first passage out of the first passage and into the second passage to form a fistula between the first passage and the second passage, wherein advancing the needle comprises puncturing the expandable device, and wherein puncturing of the expandable device is attributable to the needle puncturing the balloon and confirms advancement of the needle into the second passage; making a valve in the second passage incompetent to reduce inhibition of retroperfusion through the second passage by the valve; and deploying a prosthesis, wherein, after deploying the prosthesis, a first portion of the prosthesis is in the first passage, a second portion of the prosthesis is in the second passage, and a third portion of the prosthesis is in the fistula. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method of targeting a second passage from a first passage to effect retroperfusion in the second passage, the method comprising:
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expanding an expandable device in the second passage, the expandable device comprising a balloon, wherein the expandable device comprises radiopaque material visible under fluoroscopy; and advancing a needle from a first catheter in the first passage out of the first passage and into the second passage to form a fistula between the first passage and the second passage, wherein advancing the needle comprises; targeting the expandable device under fluoroscopy; puncturing the expandable device; and monitoring at least one of reduction in pressure of the expandable device and release of contrast from the expandable device; wherein the at least one of the reduction in pressure of the expandable device and the release of contrast from the expandable device is attributable to the needle puncturing the expandable device and confirms advancement of the needle into the second passage. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification