Methods and devices for access across adjacent tissue layers
AssigneeXLumena, Inc.
InventorsPeter Brown, Sith Khoune, Keke Lepulu, Ryan Donovan, Kenneth F. Binmoeller
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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.
Claims50
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 from the first cutting feature towards an outer diameter of the distal tip;
- 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.
A catheter assembly, comprising:
- a catheter body having a proximal end, a distal end, and a central passage therethrough;
- and
- a tip positioned near the distal end of the catheter body, the tip having a conductive portion including a first cutting feature and one or more projections outwardly extending from the first cutting feature towards an outer diameter of the tip, the conductive portion configured to be electrically coupled to an electrosurgical generator.
A method for advancing a catheter distally through a luminal wall of a first body lumen, the method comprising:
- positioning a catheter comprising an outer tubular body and inner body with a distal tip proximal to the luminal wall of the first body lumen;
- providing an electrical current to a conductive portion of the distal tip;
- advancing distally the distal tip of the catheter through the first luminal wall along with a portion of the outer tubular body 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 an outer diameter of the distal tip;
- and
- withdrawing the inner body and distal tip through the outer tubular body leaving a portion of the outer tubular body in the passage in the luminal wall of the first body lumen.
Dependencies are inferred from the claim text.