Temperature sensing return electrode pad
First Claim
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1. An electrosurgical return pad, comprising:
- a conductive electrode including a plurality of temperature monitoring zones contiguously arranged therein and a patient-contacting surface configured to conduct electrosurgical energy;
a temperature sensing circuit thermally associated with each temperature monitoring zone configured to sense an average temperature of the temperature monitoring zone associated therewith; and
an interconnection wire coupling each temperature sensing circuit to an optical isolation circuit adapted to isolate the temperature sensing circuit from electrosurgical energy.
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Abstract
An electrosurgical return electrode is disclosed. The return electrode includes a conductive pad having one or more temperature monitoring zones and a patient-contacting surface configured to conduct electrosurgical energy and a temperature sensing circuit coupled to the conductive pad. The temperature sensing circuit includes at least one diode disposed within the at least one temperature monitoring zone, the at least one diode having a predetermined forward voltage drop that is indicative of temperature of at least one temperature monitoring zone.
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Citations
20 Claims
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1. An electrosurgical return pad, comprising:
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a conductive electrode including a plurality of temperature monitoring zones contiguously arranged therein and a patient-contacting surface configured to conduct electrosurgical energy; a temperature sensing circuit thermally associated with each temperature monitoring zone configured to sense an average temperature of the temperature monitoring zone associated therewith; and an interconnection wire coupling each temperature sensing circuit to an optical isolation circuit adapted to isolate the temperature sensing circuit from electrosurgical energy. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for performing electrosurgery, comprising:
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providing an electrosurgical return pad having a conductive electrode that includes a plurality of temperature monitoring zones contiguously arranged therein and a patient-contacting surface configured to conduct electrosurgical energy, a temperature sensing circuit thermally associated with each temperature monitoring zone and configured to sense an average temperature of the temperature monitoring zone associated therewith, and an interconnection wire coupling each temperature sensing circuit to an optical isolation circuit adapted to isolate the temperature sensing circuit from electrosurgical energy; placing the electrosurgical return pad in contact with a patient; generating electrosurgical energy from an electrical energy source; supplying the electrosurgical energy to the patient via an active electrode; and measuring the average temperature of the plurality of temperature monitoring zones. - View Dependent Claims (8, 9, 10, 11, 12)
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13. An electrosurgical system for performing electrosurgery, the electrosurgical system comprising:
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an electrosurgical generator configured to provide electrosurgical energy; an electrosurgical return pad including a conductive electrode including a plurality of temperature monitoring zones contiguously arranged therein and a patient-contacting surface configured to conduct electrosurgical energy, and a temperature sensing circuit thermally associated with each temperature monitoring zone configured to sense an average temperature of the at least one temperature monitoring zone associated therewith, and an interconnection wire coupling each temperature sensing circuit to an optical isolation circuit adapted to isolate the temperature sensing circuit from electrosurgical energy; and an active electrode configured to supply electrosurgical energy to a patient. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification