Abstract: An auxiliary tubing probe for converting a monopolar electrosurgery probe having a main electrode at one end, into a bipolar electrosurgery probe. The auxiliary probe has an inner electrically insulated tube in which the monopolar electrosurgery probe is slidably inserted. An electric conductor extends externally over and along the inner insulated tube. An auxiliary electrode connected to the electric conductor projects forward away from the inner tube, in such a manner as to be adjacent to the main electrode when the monopolar electrosurgery probe has been inserted in the auxiliary probe. An outer electric insulator covers the electric conductor from the first extremity to the second extremity. The insertion of the auxiliary probe over the monopolar electrosurgery probe, and electricity going through the auxiliary electrosurgery probe and monopolar electrosurgery probe, allows conversion of the monopolar electrosurgery probe into a bipolar electrosurgery probe.

Abstract: A drive for a phacoemulsification probe includes a drive circuit for supplying electrical power to the probe, circuitry for sensing the electrical power supplied by the drive circuit to the probe and for supplying electrical signals indicative of the magnitude of the electrical power supplied. A manually operable input device provides a signal indicative of the transducer power level desired by the user of the probe. A control circuit is responsive to the signal indicative of the desired transducer power level and to the signals indicative of the magnitude of the supplied electrical power for providing control signals to the drive circuit to control the power applied in an efficient manner. The drive circuit includes a voltage controlled oscillator, responsive to at least one of the control signals, connected to a class S amplifier. The output of the class S amplifier is filtered before application to the probe transducer. The drive circuit has high efficiency when compared to prior art probe drives.