Multiple antenna ablation apparatus and method
DCFirst Claim
1. An ablation treatment apparatus, comprising:
- a multiple antenna device configured to be coupled to an energy source and including a primary antenna with a lumen, a distal end sufficiently sharp to pierce tissue and a longitudinal axis, and a secondary antenna including a distal portion and at least partially positioned in the primary antenna as the primary antenna is introduced through tissue, at least a part of the distal portion is configured to be deployed from the primary antenna in a lateral direction relative to the longitudinal axis at a selected tissue mass with at least one radius of curvature, at least a portion of a distal end of the secondary antenna is constructed to be structurally less rigid than the primary antenna, and the primary antenna is constructed to be rigid enough to be introduced through tissue; and
at least one cable coupling the multiple antenna device to the energy source.
14 Assignments
Litigations
0 Petitions
Accused Products
Abstract
An ablation treatment apparatus has a multiple antenna device with a primary antenna and a secondary antenna. The secondary antenna is positioned in a lumen of the primary antenna as the primary antenna is introduced through tissue to a selected tissue site. At the tissue site the secondary antenna is deployed from the primary antenna in a lateral direction relative to a longitudinal axis of the primary antenna. At least a portion of a distal end of the secondary antenna is structurally less rigid than the primary antenna. The primary antenna is constructed to be rigid enough to be introduced and advanced through tissue. A cable couples the energy source to one or more of the antennas.
-
Citations
27 Claims
-
1. An ablation treatment apparatus, comprising:
-
a multiple antenna device configured to be coupled to an energy source and including a primary antenna with a lumen, a distal end sufficiently sharp to pierce tissue and a longitudinal axis, and a secondary antenna including a distal portion and at least partially positioned in the primary antenna as the primary antenna is introduced through tissue, at least a part of the distal portion is configured to be deployed from the primary antenna in a lateral direction relative to the longitudinal axis at a selected tissue mass with at least one radius of curvature, at least a portion of a distal end of the secondary antenna is constructed to be structurally less rigid than the primary antenna, and the primary antenna is constructed to be rigid enough to be introduced through tissue; and at least one cable coupling the multiple antenna device to the energy source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A method for creating an ablation volume in a selected tissue mass, comprising:
-
providing an ablation device with a primary antenna, a secondary antenna with a distal end, and an energy source coupled to one or both of the antennas, wherein at least a distal end of the secondary antenna is structurally less rigid than the primary antenna, the primary antenna having a distal end sufficiently sharp to pierce tissue and the secondary antenna including a distal portion with at least a portion of the distal portion configured to be deployed from the primary antenna with at least one radius of curvature; inserting the primary antenna into the selected tissue mass with the secondary antenna distal end positioned in the primary antenna lumen; advancing the secondary antenna distal end out of the primary antenna lumen and into the selected tissue mass in a lateral direction relative to a longitudinal axis of the primary antenna; delivering electromagnetic energy from one of a primary antenna ablation surface, a secondary antenna ablation surface or both to the selected tissue mass; and
creating an ablation volume in the selected tissue mass. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
-
Specification