Tri-frequency electrosurgical instrument
AssigneeEllman International, Inc.
InventorsJon C. Garito, Alan G. Ellman
Life of this patent
Estimating the term…
Abstract
An electrosurgical instrument that is capable of generating high-quality RF energy carriers at one of three different frequencies and combining any of the three carriers with any one of four electrosurgical mode waveform modulations and selectively supplying the modulated carriers to either a monopolar or a bipolar handpiece. In a preferred embodiment, the first carrier frequency is in the range of about 3.8-4.0 MHz, the second carrier frequency is in the range of about 1.7-2.0 MHz, and the third carrier frequency is in the range of about 400-600 KHz.
Claims26
An electrosurgical instrument for selectively providing electrosurgical currents at various carrier frequencies and in different electrosurgical modes to operate an electrosurgical handpiece, comprising:
- RF power generating circuitry configured to generate a first carrier frequency, a second carrier frequency, and a third carrier frequency, each frequency being different from any such other frequency;
- wherein the RF power generating circuitry includes a modulating circuit configured to generate at least two different modulating waveforms selected from the group of a first modulating waveform, a second modulating waveform, a third modulating waveform, and a fourth modulating waveform, each modulating waveform providing a different desired electrosurgical mode from any other such modulating wave form;
- wherein the instrument is configured to selectably output to an electrosurgical handpiece a signal representing any one or more of the two different modulating waveforms for each of at least two of the carrier frequencies, and
- wherein any combination of carrier frequency and modulated waveform is selectably outputtable to a connector for either a monopolar or bipolar electrosurgical handpiece.
An electrosurgical instrument for selectively providing electrosurgical currents at various carrier frequencies and in different electrosurgical modes to operate an electrosurgical handpiece, comprising:
- RF power generating circuitry configured to generate at least one carrier frequency;
- a modulating circuit configured to generate at least three different modulating waveforms on the at least one carrier frequency, each modulating waveform providing a different desired electrosurgical mode selected from the group of:
- (1) cutting, (2) coagulating, (3) blend of cutting and coagulating, and (4) fulguration;
- wherein the instrument is configured to selectably output to an electrosurgical handpiece a signal representing any one or more of the three different modulating waveforms for the carrier frequency;
- and
- wherein any combination of carrier frequency and modulated waveform is selectably outputtable to each of a connector for a monopolar handpiece and a connector for a bipolar electrosurgical handpiece.
Dependencies are inferred from the claim text.