Electrosurgical Device and Methods
First Claim
1. An electrosurgical probe comprising at least two electrically isolated electrical conductors and a lumen for circulating a cooling fluid within only one of said at least two electrically isolated electrical conductors.
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 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. In this way, cooling of both electrodes is achieved while avoiding direct contact of the cooling fluid with one of the electrodes.
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Citations
56 Claims
- 1. An electrosurgical probe comprising at least two electrically isolated electrical conductors and a lumen for circulating a cooling fluid within only one of said at least two electrically isolated electrical conductors.
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4. (canceled)
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7-8. -8. (canceled)
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10-12. -12. (canceled)
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14. (canceled)
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16-19. -19. (canceled)
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21-22. -22. (canceled)
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24-26. -26. (canceled)
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28. (canceled)
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30. (canceled)
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32. (canceled)
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33. An electrosurgical probe comprising:
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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 a distal electrical insulator; the distal electrode having a closed proximal end formed by a distal face of the distal electrical insulator to thereby define a closed distal lumen for circulating a cooling fluid; and the proximal electrode having 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 a proximal electrical insulator to thereby define a closed proximal lumen for circulating a cooling fluid. - View Dependent Claims (34, 35, 37, 41, 43)
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36. (canceled)
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38-40. -40. (canceled)
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42. (canceled)
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44-49. -49. (canceled)
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50. An electrosurgical system comprising:
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an electrosurgical generator; a source of 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, an inner one of the electrical conductors defining a lumen for circulation of a cooling fluid therein; and an inner electrical insulator disposed between the inner and outer electrical conductors for electrically isolating the electrical conductors; 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 of 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 cooling fluid is operably coupled to the at least one electrosurgical probe for delivering fluid into the lumen for cooling the inner and outer electrical conductors. - View Dependent Claims (51, 52, 55)
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53-54. -54. (canceled)
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56-118. -118. (canceled)
Specification