Abstract:
A method of operating a power source device for a high-frequency treatment instrument adapted to perform high-frequency treatment for biological tissue includes causing a high-frequency power source circuit to output power; setting a target impedance value which gradually increases from a change-over impedance value to a stop impedance value; regularly comparing a measured impedance value to the target impedance value; causing the high-frequency power source circuit to lower the power by a first ratio if the measured impedance value is greater than the target impedance value, and to raise the power by a second ratio if the measured impedance value is smaller than the target impedance value; and causing the high-frequency power source circuit to terminate the output upon the value for impedance reaching the stop impedance value.
Abstract:
A high-frequency control unit includes an integration value calculator calculating a measured integration value, which is a measured value of an integration value of an output high-frequency electric power from an output start time, with a passage of time. The high-frequency control unit includes a target locus setting section setting target locus which indicates, with a passage of time, a target integration value that is a target value of the integration value of the output high-frequency electric power from the output start time, and a controller comparing, with a passage of time, the measured integration value with the target locus, and controlling, with a passage of time, an output state of the high-frequency electric power based on a comparison result.
Abstract:
A treatment device includes a support section having conductivity, for which a separate position separated from the probe is switched to a support position at which the support section abuts the probe to support the probe when bent in a direction off of the central axis in accordance with a load which is applied to the probe, and subserviently moved with the vibration of the probe. The support section absorbs the vibration transmitted in the probe when the support section is at the support position.
Abstract:
A generator includes a control device including a processor, and outputs electrical energy to a treatment instrument. The processor determines whether a treatment target has been heat-denatured prior to receiving an output command, and, based on determination, selects, as an operation state of the treatment instrument, one of a first mode if it is determined that the treatment target has not been heat-denatured and a second mode if it is determined that the treatment target has been heat-denatured. The processor operates the treatment instrument at the selected operation state by controlling the output of the electrical energy to the treatment instrument.
Abstract:
An energy treatment system and a output control method thereof according to embodiments of the present invention perform treatment by energy supply in which ultrasonic energy and high frequency energy are combined, stop or suppress discharge by reducing the output of high frequency energy within a set period when a state in which discharge is likely to occur during treatment is detected, and change the output of ultrasonic energy. In addition, in order for a user to continue treatment without feeling uncomfortable and to ensure incision performance, each output is controlled so that the set period is as short as possible or is supplemented, and also, the set period expires, and control is performed so as to reduce the possibility of discharge even at the time of returning.
Abstract:
An operation method of an electric power source device for operating a high-frequency treatment instrument configured to perform a high-frequency treatment on a biological tissue includes causing a high-frequency electric power source circuit to output electric power; acquiring an initial impedance value in a first period from a start of the output; determining an increase rate of an output voltage relative to time; increasing the output voltage of the high-frequency electric power source circuit in accordance with the increase rate in a second period; acquiring the value relating to impedance of the biological tissue in the second period; and terminating the second period after the value relating to the impedance reaches a minimum value.
Abstract:
A power supply apparatus is for a treatment instrument including a probe having electrical conductivity which vibrates, a grasping member that is opened and closed with respect to the probe and an electrode provided in the grasping member. The power supply apparatus supplies high-frequency power between the probe and the electrode. The power supply apparatus includes a resistance acquisition circuit which repeatedly acquires a resistance value of electrical resistance between the probe and the electrode, a condition determination circuit which acquires the number of times the resistance value satisfies a predetermined condition while the probe is vibrating and power is supplied between the probe and the electrode, and a determination circuit which determines whether or not the probe and the electrode are electrically short-circuited based on the number of times.
Abstract:
A power supply device for a high-frequency treatment instrument includes an output section, a characteristic detector, and a stop signal generator. The output section outputs power having a first frequency supplied to the high-frequency treatment instrument. The characteristic detector detects a characteristic signal generated before the power outputted from the output section becomes excessive, the characteristic signal having a second frequency higher than the first frequency and being included in a signal related to the power. The stop signal generator outputs a stop signal to stop or reduce an output of the power from the output section when the characteristic signal is detected.
Abstract:
A therapeutic treatment system includes a holding section configured to hold a biological tissue, electrodes provided in the holding section and capable of outputting first high-frequency energy for sealing the biological tissue at a first sealing temperature and second high-frequency energy for dissecting the biological tissue at a first dissection temperature higher than the first sealing temperature, electrodes provided in the holding section and capable of outputting first thermal energy for sealing the biological tissue at a second sealing temperature higher than the first sealing temperature and second thermal energy for dissecting the biological tissue at a second dissection temperature lower than the first dissection temperature and higher than the second sealing temperature, and a control section configured to control temperature of each of the electrodes to output the second thermal energy after the output of the first high-frequency energy.
Abstract:
An electrode unit comprises: an electrode supporting member provided with a pair of distal end rigid members surfaces of which are covered by an electrically insulating material; a treatment electrode configured with electrode bodies arranged in respective distal end portions of the pair of distal end rigid members and protruding downward respectively from the pair of distal end rigid members, and a spanning portion that spans respective lower end portions of the electrode bodies; and a detection sensor arranged on respective proximal end sides of the pair of distal end rigid members and configured to detect a contact state between the pair of distal end rigid members and tissue.