Ablation technology for catheter based delivery systems
First Claim
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1. A catheter based delivery system comprising:
- a catheter having a distal end;
an emitter electrode disposed in said distal end and configured to emit RF energy, wherein a position of said emitter electrode is substantially fixed with respect to said distal end of said catheter;
at least one director electrode disposed in said distal end, wherein a position of said at least one director electrode is substantially fixed with respect to said distal end of said catheter; and
at least one reflector electrode disposed in said distal end, wherein a position of said at least one reflector electrode is substantially fixed with respect to said distal end of said catheter;
said at least one director electrode and said at least one reflector electrode configured to control said RF energy and generate a desired emitted RF energy pattern proximate said distal end of said catheter.
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Abstract
A catheter based delivery system may be used for both therapeutic and diagnostic applications. The catheter based delivery system includes a catheter having a distal end. The distal end of the catheter includes several electrodes that can emit a radio frequency waveform, and may receive a signal representative of an impedance of material in the exposed to the radio frequency waveform. The radio frequency waveform may also be applied to ablate specifically targeted material exposed to the radio frequency waveform. The several electrodes may be configured as an antenna.
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Citations
22 Claims
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1. A catheter based delivery system comprising:
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a catheter having a distal end; an emitter electrode disposed in said distal end and configured to emit RF energy, wherein a position of said emitter electrode is substantially fixed with respect to said distal end of said catheter; at least one director electrode disposed in said distal end, wherein a position of said at least one director electrode is substantially fixed with respect to said distal end of said catheter; and at least one reflector electrode disposed in said distal end, wherein a position of said at least one reflector electrode is substantially fixed with respect to said distal end of said catheter; said at least one director electrode and said at least one reflector electrode configured to control said RF energy and generate a desired emitted RF energy pattern proximate said distal end of said catheter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 13, 14, 15, 16, 17)
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8. A catheter based delivery system comprising:
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a catheter having a distal end configured to transmit RF energy; and a Yagi Uda type antenna, comprising; an emitter electrode disposed in said distal end_and configured to emit RF energy, wherein a position of said emitter electrode is substantially fixed with respect to said distal end of said catheter; at least one director electrode disposed in said distal end, wherein a position of said at least one director electrode is substantially fixed with respect to said distal end of said catheter; and at least one reflector electrode disposed in said distal end, wherein a position of said at least one reflector electrode is substantially fixed with respect to said distal end of said catheter;
said at least one director electrode and said at least one reflector electrode configured to control said RF energy and generate a desired emitted RF energy pattern proximate said distal end of said catheter. - View Dependent Claims (9, 10, 11, 12, 18, 19, 20, 21, 22)
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Specification