Electrosurgical device and methods
First Claim
1. An electrosurgical probe comprising:
- a proximal first end, an opposite distal second end, and a length between the proximal first end and the distal second end;
a first electrode positioned at the distal end;
a second electrode spaced apart from the first electrode and positioned between the proximal end and the distal end;
an inner conductor electrically connected the first electrode;
an outer conductor electrically connected to the second electrode;
an insulator positioned between the first electrode and the second electrode, the insulator electrically isolating the first electrode and the second electrode from one another; and
a passageway extending through at least a portion of the electrosurgical probe, the passageway being configured to circulate cooling fluid to cool at least a portion of the electrosurgical probe;
wherein the first electrode is formed by a closed distal end of the inner conductor.
3 Assignments
0 Petitions
Accused Products
Abstract
An electrosurgical probe with internal cooling for use in systems and methods for lesioning in bone and other tissue is disclosed. The probe includes a distal electrical insulator, a proximal electrical insulator, a distal electrical conductor defining a distal electrode with a closed distal end and a proximal electrical conductor defining a proximal electrode, the distal electrode longitudinally spaced apart and electrically isolated from the proximal electrode by the distal electrical insulator. The distal electrode has a closed proximal end formed by a distal face of the distal electrical insulator to thereby define a closed distal inner lumen for circulating the cooling fluid. The proximal electrode has a closed distal end formed by a proximal face of the distal electrical insulator and a closed proximal end formed by a distal face of the proximal electrical insulator to thereby define a closed proximal inner lumen for circulating the cooling fluid.
94 Citations
20 Claims
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1. An electrosurgical probe comprising:
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a proximal first end, an opposite distal second end, and a length between the proximal first end and the distal second end; a first electrode positioned at the distal end; a second electrode spaced apart from the first electrode and positioned between the proximal end and the distal end; an inner conductor electrically connected the first electrode; an outer conductor electrically connected to the second electrode; an insulator positioned between the first electrode and the second electrode, the insulator electrically isolating the first electrode and the second electrode from one another; and a passageway extending through at least a portion of the electrosurgical probe, the passageway being configured to circulate cooling fluid to cool at least a portion of the electrosurgical probe; wherein the first electrode is formed by a closed distal end of the inner conductor. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An electrosurgical probe comprising:
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a proximal first end, an opposite distal second end, and a length between the proximal first end and the distal second end; an inner conductor extending from a position at least adjacent the proximal first end to the distal second end, and an outer conductor extending from a position at least adjacent the proximal first end to a position between the proximal first end and the distal second end, the inner conductor being positioned at least partially within the outer conductor; a first electrode electrically connected to the inner conductor and formed by a closed distal end of the inner conductor; a second electrode electrically connected to the outer conductor and formed by a portion of the outer conductor; an insulator positioned between the first electrode and the second electrode; and a passageway extending through at least a portion of the of the inner conductor, the passageway being configured to circulate cooling fluid to cool at least a portion of the electrosurgical probe. - View Dependent Claims (9, 10, 11, 12)
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13. An electrosurgical probe comprising:
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a proximal first end, an opposite distal second end, and a length between the proximal first end and the distal second end; a first conductor extending from a position at least adjacent the proximal first end to the distal second end, and a second conductor extending from a position at least adjacent the proximal first end to a position between the proximal first end and the distal second end; a first electrode formed by a distal end of the first conductor, and a second electrode formed by a distal end of the second conductor, the first conductor and the second conductor being spaced apart from one another, and the first electrode being closer to the distal end of the electrosurgical probe than the second conductor; an insulator positioned between at least portions of the first electrode and the second electrode; and a passageway extending through at least a portion of the of the first conductor, the passageway being configured to circulate cooling fluid to cool at least a portion of the electrosurgical probe. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification