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US 7,922,713 B2Granted
High efficiency, precision electrosurgical apparatus and method
OwnerDonald J. Geiselinventor
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OwnerDonald J. Geiselinventor
Estimating the term…
An electrosurgical apparatus for cutting and/or coagulating living tissue, a method of forming the electrosurgical apparatus, and a method of using the electrosurgical apparatus. The cutting and/or coagulating living tissue is performed with one or two heated loops of resistance wire accompanied by sufficient electrical current across the living tissue to enable said cutting and/or coagulating to be performed. The electrosurgical apparatus may include: a glow blade having one or two glow loops of resistance wire; a radio frequency (RF) generator; and one or two voltage supplies configured to operate concurrently, while the one or two glow loops are heated to said glow, to supply both sufficient RF power and associated electrical current across the living tissue for cutting and/or coagulating the living tissue by the one or two glow loops. A first output of the RF generator is electrically coupled to the one or two glow loops.
An electrosurgical apparatus for cutting and/or coagulating living tissue, comprising:
A method, comprising:
An electrosurgical apparatus comprising a cutting probe and a radio-frequency supply for applying a radio-frequency voltage between the cutting probe and living tissue to create an electric arc capable of vaporizing the tissue nearby the cutting probe and of coagulating any blood flow from the remaining tissue near the cutting probe, the improvement wherein the electrosurgical apparatus includes a supply for heating the cutting probe additional to that provided by the radio-frequency current in the electric arc, wherein the supply for heating the cutting probe is configured to supply sufficient electrical current to the cutting probe to heat the cutting probe to a glow wherein the cutting probe is ready and able to give off electrons, wherein both the supply for heating the cutting probe and the radio frequency supply are configured to operate concurrently, which additional heating is sufficient to reduce substantially the radio-frequency voltage necessary to sustain the electric arc reliably.
Dependencies are inferred from the claim text.