Hard tissue ablation system
First Claim
1. An electrosurgical system for treating a target structure in a patient, comprising:
- a device comprising a shaft, a distal end section, and an active electrode associated with the distal end section;
a first fluid supply containing a first electrically conductive fluid, the first fluid supply having a fluid delivery outlet spaced away from the active electrode to deliver the first electrically conductive fluid in the vicinity of the target tissue; and
a second fluid supply containing a second electrically conductive fluid, the second fluid supply for delivering the second electrically conductive fluid through the device and directly adjacent to the active electrode, the second electrically conductive fluid chemically different from the first electrically conductive fluid.
1 Assignment
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Accused Products
Abstract
An electrosurgical system and method for treating hard and soft tissues in the body comprises a shaft, a distal end section, an active electrode associated with the distal end section, a first fluid supply adapted to deliver a first electrically conductive fluid to the target site, and a second fluid supply adapted to deliver a second electrically conductive fluid to the active electrode. The system is adapted to treat a wide variety of hard tissues such as, for example, bones, calcified structures, calcified deposits, teeth, plaque, kidney-stones, gall-stones and other types of tissue by generating plasma in the vicinity of the active electrode, and applying the plasma to the tissue or structures.
534 Citations
19 Claims
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1. An electrosurgical system for treating a target structure in a patient, comprising:
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a device comprising a shaft, a distal end section, and an active electrode associated with the distal end section; a first fluid supply containing a first electrically conductive fluid, the first fluid supply having a fluid delivery outlet spaced away from the active electrode to deliver the first electrically conductive fluid in the vicinity of the target tissue; and a second fluid supply containing a second electrically conductive fluid, the second fluid supply for delivering the second electrically conductive fluid through the device and directly adjacent to the active electrode, the second electrically conductive fluid chemically different from the first electrically conductive fluid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An electrosurgical apparatus for treating a target structure in a patient, comprising:
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a device comprising a shaft, a distal end section, and an active electrode associated with the distal end section; a first fluid source storing a first conductive fluid, the first fluid source configured for delivering the first conductive fluid to the target structure; and a second fluid source storing a sodium bicarbonate solution, the second fluid source configured for delivering the sodium bicarbonate solution in the vicinity of the active electrode; wherein the first conductive fluid is chemically different from the sodium bicarbonate solution. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification