ELECTROSURGICAL SYSTEM WITH SELECTIVE CONTROL OF ACTIVE AND RETURN ELECTRODES
First Claim
1. A system comprising:
- a wand comprising a non-conductive outer surface, at least three electrodes disposed on a distal end of the wand, and at least three electrical leads extending from a proximal end of the wand, one of the at least three electrical leads electrically coupled singly to each of the at least three electrodes; and
a controller comprising;
a controller connector coupled to the at least three electrical leads;
a voltage generator configured to generate voltage of varying amplitude, the voltage generator has an active terminal and a return terminal; and
a control circuit coupled between the controller connector and the voltage generator;
the control circuit configured to selectively electrically couple both the active terminal and the return terminal to the at least three electrical leads, such that any of the at least three electrodes are electrically coupled singly or in combination to the voltage generator as an active electrode or as a return electrode.
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Accused Products
Abstract
Electrosurgical system with selective control of active and return electrodes. At least some of the illustrative embodiments are systems comprising an electrosurgical wand and an electrosurgical controller. The wand comprises a non-conductive outer surface, at least three electrodes disposed on a distal end of the wand, and at least three electrical leads extending from a proximal end of the wand (one electrical lead electrically coupled to each electrode). The controller comprises a voltage generator and a control circuit coupled between the voltage generator and the electrodes of the wand. The control circuit is configured to: selectively electrically couple the active terminal singly and in combination to the electrodes of the wand; and selectively electrically couple the return terminal singly and in combination to electrodes of the wand.
13 Citations
20 Claims
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1. A system comprising:
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a wand comprising a non-conductive outer surface, at least three electrodes disposed on a distal end of the wand, and at least three electrical leads extending from a proximal end of the wand, one of the at least three electrical leads electrically coupled singly to each of the at least three electrodes; and a controller comprising; a controller connector coupled to the at least three electrical leads; a voltage generator configured to generate voltage of varying amplitude, the voltage generator has an active terminal and a return terminal; and a control circuit coupled between the controller connector and the voltage generator; the control circuit configured to selectively electrically couple both the active terminal and the return terminal to the at least three electrical leads, such that any of the at least three electrodes are electrically coupled singly or in combination to the voltage generator as an active electrode or as a return electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An electrosurgical controller comprising:
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a first connector disposed on an outer surface of the electrosurgical controller, the first connector configured to couple to a connector of an electrosurgical wand, and the first connector comprising at least three electrical pins; a voltage generator configured to generate a selectable alternating current (AC) output voltage, the voltage generator has a active terminal and a return terminal; and a control circuit coupled between the first connector and the voltage generator, the control circuit configured to selectively electrically couple both the active terminal and the return terminal to the at least three electrical pins of the first connector, such that any of the at least three electrical pins electrically couple singly or in combination to the active terminal or the return terminal. - View Dependent Claims (11, 12, 13, 14)
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15. A system comprising:
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an electrosurgical wand comprising; an elongate shaft that defines a proximal end and a distal end; a connector comprising a plurality of electrical pins; at least two first electrodes disposed on the distal end of the elongate shaft; at least two second electrodes disposed on the distal end of the elongate shaft and spaced away from the at least two first electrodes; wherein each of the electrodes is electrically coupled to one of the plurality of electrical pins via an electrical lead; wherein each of the at least two first electrodes have a surface area less than three-quarters the surface area of each of the at least two electrodes; a control circuit coupled between a high frequency voltage generator and the connector, the control circuit configured to switch between a first, second, and third modes; wherein in the first mode the at least two first electrodes are selectively electrically coupled to the high frequency voltage generator as active electrodes and the at least two second electrodes are selectively electrically coupled to the high frequency voltage generator as return electrodes; wherein in the second mode the at least two first electrodes are electrically isolated from the high frequency voltage generator and one of the at least two second electrodes is selectively electrically coupled to the high frequency voltage generator as the active electrode and at least another of the at least two second electrodes is selectively electrically coupled to the high frequency voltage generator as the return electrode; and wherein in the third mode the at least two first electrodes are selectively electrically coupled to the high frequency voltage generator as return electrodes and one of the at least two second electrodes is selectively electrically coupled to the high frequency voltage generator as the active electrode and the other of the at least two second electrodes are electrically isolated from the high frequency voltage generator. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification