Methods and devices for access across adjacent tissue layers
First Claim
Patent Images
1. A method for advancing a catheter distally through opposed first and second luminal walls of first and second body lumens, the method comprising:
- positioning a catheter with a distal tip proximal to the first luminal wall, the catheter including a stent;
providing an electrical current to a conductive portion of the distal tip;
advancing distally the distal tip of the catheter through the first and second luminal walls to create a passage therethrough, wherein the conductive portion of the distal tip includes a first cutting feature and one or more projections extending proximally from the first cutting feature towards a region of the distal tip having a larger outer diameter than that of the first cutting feature;
deploying a distal flange of the stent in the second body lumen; and
drawing proximally on the distal flange to pull the first and second luminal walls towards each other.
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Abstract
Adjacent tissue layers can be accessed using a catheter device with a distal tip having a conductive portion including a first cutting feature and one or more projections extending from the first cutting feature towards an outer diameter of the distal tip. Electrical energy can be supplied to the conductive portion of the device to cut tissue. A stent can be delivered to form a fluid communication between the adjacent tissue layers.
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Citations
49 Claims
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1. A method for advancing a catheter distally through opposed first and second luminal walls of first and second body lumens, the method comprising:
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positioning a catheter with a distal tip proximal to the first luminal wall, the catheter including a stent; providing an electrical current to a conductive portion of the distal tip; advancing distally the distal tip of the catheter through the first and second luminal walls to create a passage therethrough, wherein the conductive portion of the distal tip includes a first cutting feature and one or more projections extending proximally from the first cutting feature towards a region of the distal tip having a larger outer diameter than that of the first cutting feature; deploying a distal flange of the stent in the second body lumen; and drawing proximally on the distal flange to pull the first and second luminal walls towards each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A method for advancing a catheter distally through adjacent first and second tissue layers, the method comprising:
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positioning a catheter with a distal tip proximal to the first tissue layer, the catheter including a stent; providing an electrical current to a conductive portion of the distal tip; advancing the distal tip of the catheter through the first and second tissue layers to create a passage therethrough, wherein the conductive portion of the distal tip includes a first cutting feature and one or more projections extending from the first cutting feature towards a region of the distal tip having a larger outer diameter than that of the first cutting feature; deploying a distal flange of the stent distal to the second tissue layer; and drawing on the distal flange to pull the first and second tissue layers towards each other. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
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Specification