Multiple antenna ablation apparatus and method with cooling element
First Claim
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1. An ablation apparatus, comprising:
- a handpiece;
an electrode coupled to the handpiece, the electrode including a distal end sufficiently sharp to pierce tissue, a lumen, a cooling medium inlet conduit and a cooling medium exit conduit both extending at least partially through the electrode lumen, the electrode further including a port isolated from a cooling medium flowing in the inlet and outlet conduits, wherein the electrode is configured to be coupled to an energy source;
a probe at least partially positionable in the electrode lumen, wherein the probe includes a distal portion configured to be advanced out of the port with at least one radius of curvature; and
a thermal sensor coupled to the probe.
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Abstract
An ablation apparatus includes a handpiece, an electrode extending from a handpiece distal end, a probe, a thermal sensor and an energy source. The electrode includes a distal end and a lumen, a cooling medium inlet conduit and a cooling medium exit conduit. Both conduits extend through the electrode lumen to an electrode distal end. A sidewall port, isolated from a cooling medium flowing in the inlet and outlet conduits, is formed in the electrode. The probe is at least partially positionable in the electrode lumen and configured to be advanced and retracted in and out of the sidewall aperture. The thermal sensor is supported by the probe. The electrode is coupled to an energy source.
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Citations
36 Claims
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1. An ablation apparatus, comprising:
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a handpiece; an electrode coupled to the handpiece, the electrode including a distal end sufficiently sharp to pierce tissue, a lumen, a cooling medium inlet conduit and a cooling medium exit conduit both extending at least partially through the electrode lumen, the electrode further including a port isolated from a cooling medium flowing in the inlet and outlet conduits, wherein the electrode is configured to be coupled to an energy source; a probe at least partially positionable in the electrode lumen, wherein the probe includes a distal portion configured to be advanced out of the port with at least one radius of curvature; and a thermal sensor coupled to the probe. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method for creating an ablation volume in a selected tissue mass, comprising:
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providing an ablation device including a handpiece, an electrode with a distal end, a lumen, and a sidewall port isolated from a cooling medium flowing through the electrode, a probe positionable in the electrode lumen and configured to be advanced and retracted in and out of the sidewall port and a thermal sensor supported by the probe; inserting the electrode into the selected tissue mass; creating a tissue interface adjacent to an electrode electromagnetic energy delivery surface; positioning at least a portion of the probe in the electrode lumen; advancing a distal end of the probe from the sidewall port into the selected tissue mass; cooling at least a portion of the electrode electromagnetic energy delivery surface; delivering electromagnetic energy from the electrode electromagnetic energy delivery surface to the selected tissue mass; measuring temperature at a site in the selected tissue mass; and creating an ablation volume in the selected tissue mass. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification