Surgical system and surgical method
AssigneeOlympus Medical Systems Corp.
InventorsNorikiyo SHIBATA, Sadayoshi TAKAMI
Life of this patent
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Abstract
A surgical system includes: a treatment portion for treating living body tissue targeted for treatment; an ultrasound supplying section for supplying ultrasound via ultrasound transducers which produce ultrasound vibration; a radio-frequency electrical power supplying section for supplying, to the treatment portion, radio-frequency electrical power having an output wave-form defined by a base frequency and a repetition frequency; and a controlling section for controlling at least one of a voltage root-mean-square value and a crest factor, so that the voltage peak value of the output wave-form of the radio-frequency electrical power does not exceed a fixed value.
Claims20
A surgical system comprising:
- a treatment portion for treating living body tissue targeted for treatment;
- an ultrasound supplying section for supplying ultrasound to the treatment portion via ultrasound transducers which produce ultrasound vibration;
- a radio-frequency electrical power supplying section for supplying, to the treatment portion, radio-frequency electrical power having an output wave-form defined by a base frequency and a repetition frequency;
- and
- a controlling section for controlling at least one of a voltage root-mean-square value and a crest factor, which is calculated by dividing a voltage peak value by the voltage root-mean-square value, so that the voltage peak value at peaks in the output wave-form of the radio-frequency electrical power does not exceed a fixed value.
A surgical method for performing surgery using a treatment instrument on living body tissue targeted for treatment, the surgical method comprising:
- a simultaneous supplying step of simultaneously supplying, to a treatment portion at a distal end of the treatment instrument, ultrasound via ultrasound transducers and a radio-frequency electrical power having an output wave-form defined by a base frequency and a repetition frequency;
- an impedance detecting step of detecting an impedance value when the radio-frequency electrical power is supplied to the living body tissue via the treatment portion;
- a judging step of judging whether or not the impedance value detected in the impedance detecting step is within a predetermined range;
- and
- a controlling step of controlling, based on a judgment result of whether the impedance value detected in the judging step is in the predetermined range, at least one of a voltage root-mean-square value and a crest factor, which is calculated by dividing a voltage peak value by the voltage root-mean-square value, so that the voltage peak value at peaks in the output wave-form of the radio-frequency electrical power does not exceed a fixed value.
Dependencies are inferred from the claim text.