Methods and devices for access across adjacent tissue layers
First Claim
Patent Images
1. A catheter assembly, comprising:
- a catheter body having a proximal end, a distal end, and a passage therethrough;
a tip positioned near the distal end of the catheter body, the tip being conically shaped and having a conductive portion including a distal ring-shaped cutting feature and a projection outwardly extending from the ring-shaped cutting feature towards an outer diameter of the tip, the tip further comprising an insulated portion extending radially further outward than the ring-shaped cutting feature, the conductive portion configured to be electrically coupled to an electrosurgical generator; and
a stent carried on the catheter body proximal to the tip.
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Accused Products
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.
28 Citations
15 Claims
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1. A catheter assembly, comprising:
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a catheter body having a proximal end, a distal end, and a passage therethrough; a tip positioned near the distal end of the catheter body, the tip being conically shaped and having a conductive portion including a distal ring-shaped cutting feature and a projection outwardly extending from the ring-shaped cutting feature towards an outer diameter of the tip, the tip further comprising an insulated portion extending radially further outward than the ring-shaped cutting feature, the conductive portion configured to be electrically coupled to an electrosurgical generator; and
a stent carried on the catheter body proximal to the tip. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A catheter assembly, comprising:
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a catheter body having a proximal end, a distal end, and a passage therethrough; a tip positioned near the distal end of the catheter body, the tip being conically shaped and having a conductive portion including a distal ring-shaped cutting feature and a projection extending from the ring-shaped cutting feature proximally towards an outer diameter of the tip, the tip further comprising an insulating portion extending proximally from the ring-shaped cutting feature and radially further outward than the ring-shaped cutting feature, the conductive portion configured to be electrically coupled to an electrosurgical generator; and
a stent carried on the catheter body proximal to the tip. - View Dependent Claims (11, 12)
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13. A catheter assembly, comprising:
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a catheter body having a proximal end, a distal end, and a central passage therethrough; a tip positioned near the distal end of the catheter body, the tip being conically shaped and having a conductive portion including a distal ring-shaped cutting feature and a projection extending proximally and radially outward from the ring-shaped cutting feature, the tip further comprising an insulating portion extending radially further outward than the ring-shaped cutting feature, the conductive portion configured to be electrically coupled to an electrosurgical generator; and
a stent carried on the catheter body proximal to the tip. - View Dependent Claims (14, 15)
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Specification