Unfurling electrode devices with the multiple longitudinal electrode segments
First Claim
1. An ablation device for treatment of tissue in body lumens with varying sizes, the device comprising:
- a catheter;
an expansion member coupled with a distal portion of the catheter;
an ablation structure comprising a plurality of longitudinal electrode regions;
an ablation structure support coupled with the ablation structure, wherein;
the ablation structure and the ablation structure support are configured to at least partially unfurl or furl around the expansion member as the expansion member expands or contracts;
the ablation structure support comprises an edge coupled with the expansion member and a free edge opposite the edge coupled with the expansion member;
the ablation structure support at least partially overlaps itself around the expansion member and fully shields at least one of the plurality of longitudinal electrode regions; and
a power source configured to selectively enable the plurality of longitudinal electrode regions sequentially starting with a longitudinal electrode region adjacent to the free edge of the ablation structure support and stopping with the at least one fully-shielded longitudinal electrode region.
1 Assignment
0 Petitions
Accused Products
Abstract
Methods, systems, and devices for providing treatment to a tissue in body lumens are described. The system may include a catheter, an expansion member coupled with a distal portion of the catheter, an ablation structure including one or more longitudinal electrode segments, and an ablation structure support coupled to the ablation structure configured to at least partially unfurl as the expansion member expands and furl as the expansion member contracts. The ablation structure may include multiple separately wired and/or separately controlled longitudinal electrodes, longitudinal electrode zones, or both, such that each longitudinal electrode or longitudinal electrode zone may be selectively enabled or selectively disabled. In some instances, one or more springs are coupled to the ablation structure configured to promote unfurl or furl around the expansion member. In some instances, one or more protection elements are be positioned along the catheter.
44 Citations
20 Claims
-
1. An ablation device for treatment of tissue in body lumens with varying sizes, the device comprising:
-
a catheter; an expansion member coupled with a distal portion of the catheter; an ablation structure comprising a plurality of longitudinal electrode regions; an ablation structure support coupled with the ablation structure, wherein; the ablation structure and the ablation structure support are configured to at least partially unfurl or furl around the expansion member as the expansion member expands or contracts; the ablation structure support comprises an edge coupled with the expansion member and a free edge opposite the edge coupled with the expansion member; the ablation structure support at least partially overlaps itself around the expansion member and fully shields at least one of the plurality of longitudinal electrode regions; and a power source configured to selectively enable the plurality of longitudinal electrode regions sequentially starting with a longitudinal electrode region adjacent to the free edge of the ablation structure support and stopping with the at least one fully-shielded longitudinal electrode region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method for treatment of tissue in body lumens with varying sizes, the method comprising:
-
inserting an ablation structure coupled with an ablation structure support and an expansion member into a body lumen, wherein the ablation structure and the ablation structure support are configured to at least partially unfurl or furl around the expansion member as the expansion member expands or contracts, wherein the ablation structure support comprises an edge coupled with the expansion member and a free edge opposite the edge coupled with the expansion member and at least partially overlaps itself around the expansion member and fully shields at least one of the plurality of longitudinal electrode regions; expanding the expansion member to at least partially unfurl the ablation structure to engage a circumferential section of the body lumen; and delivering energy from a power source through one or more of a plurality of longitudinal electrode regions of the ablation structure to the circumferential section of the body lumen, wherein the power source is configured to selectively enable the plurality of longitudinal electrode regions sequentially starting with a longitudinal electrode region adjacent to the free edge of the ablation structure support and stopping with the at least one fully-shielded longitudinal electrode region. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification