Electrosurgical device and methods
First Claim
1. An electrosurgical probe for use with a cooling fluid, the electrosurgical probe comprising:
- at least two electrically isolated electrical conductors and an inner electrical insulator, the at least two electrical conductors comprising an inner electrical conductor and an outer electrical conductor, the inner electrical conductor defining a lumen for circulating the cooling fluid therein for direct cooling of the inner electrical conductor; and
the inner electrical insulator being disposed substantially between the inner electrical conductor and the outer electrical conductor;
wherein, in use, the cooling fluid which is circulating within the inner electrical conductor indirectly cools the outer electrical conductor.
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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 tubular electrodes configured such that the inner surface of the lesioning electrodes are cooled, directly or indirectly, while keeping the electrodes electrically isolated. One embodiment includes an electrosurgical probe having at least two electrically isolated electrical conductors, including an inner electrical conductor and an outer electrical conductor. The inner electrical conductor defines a lumen for the circulation of a cooling fluid therein. An inner electrical insulator is disposed between the electrical conductors to electrically isolate the electrical conductors. The electrical insulator has sufficient thermal conductivity to allow for cooling of the inner and outer electrical conductors when the cooling fluid is circulating within the lumen of the inner electrical conductor.
56 Citations
20 Claims
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1. An electrosurgical probe for use with a cooling fluid, the electrosurgical probe comprising:
- at least two electrically isolated electrical conductors and an inner electrical insulator, the at least two electrical conductors comprising an inner electrical conductor and an outer electrical conductor, the inner electrical conductor defining a lumen for circulating the cooling fluid therein for direct cooling of the inner electrical conductor; and
the inner electrical insulator being disposed substantially between the inner electrical conductor and the outer electrical conductor;
wherein, in use, the cooling fluid which is circulating within the inner electrical conductor indirectly cools the outer electrical conductor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
- at least two electrically isolated electrical conductors and an inner electrical insulator, the at least two electrical conductors comprising an inner electrical conductor and an outer electrical conductor, the inner electrical conductor defining a lumen for circulating the cooling fluid therein for direct cooling of the inner electrical conductor; and
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17. An electrosurgical system for use with a cooling fluid comprising:
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an electrosurgical generator; a source of the cooling fluid; and at least one electrosurgical probe comprising; at least two electrically isolated electrical conductors, comprising an inner electrical conductor and an outer electrical conductor, the inner electrical conductor defining a lumen for circulation of the cooling fluid therein; and an inner electrical insulator disposed substantially between the inner electrical conductor and the outer electrical conductor; the inner electrical insulator having sufficient thermal conductivity to allow for cooling of the outer electrical conductor when the cooling fluid is circulating within the lumen defined by the inner electrical conductor; wherein the at least one electrosurgical probe is operable to be connected to the generator for delivering energy between the inner electrical conductor and the outer electrical conductor in a bipolar manner; and wherein the source of the cooling fluid is operably coupled to the at least one electrosurgical probe for delivering fluid in the lumen for directly cooling the inner electrical conductor and indirectly cooling the outer electrical conductors. - View Dependent Claims (18, 19)
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20. An electrosurgical probe for use with a cooling fluid, the electrosurgical probe comprising:
- at least two electrically isolated electrical conductors operable to deliver energy in a bipolar manner therebetween, the at least two electrically isolated electrical conductors comprising an inner electrical conductor and an outer electrical conductor, the inner electrical conductor defining a closed ended lumen for circulation of a cooling fluid therein for cooling the at least two electrically isolated electrical conductors;
an inner electrical insulator disposed substantially between the electrical conductors; and
an outer electrical insulator disposed on the outer electrical conductor;
wherein a distal portion of the inner electrical conductor is exposed to define a distal electrode and a distal portion of the outer electrical conductor is exposed to define a proximal electrode and wherein the inner electrical insulator defines an exposed inner electrical insulator portion between a distal edge of the proximal electrode and a proximal edge of the distal electrode.
- at least two electrically isolated electrical conductors operable to deliver energy in a bipolar manner therebetween, the at least two electrically isolated electrical conductors comprising an inner electrical conductor and an outer electrical conductor, the inner electrical conductor defining a closed ended lumen for circulation of a cooling fluid therein for cooling the at least two electrically isolated electrical conductors;
Specification