Olympus Corporation

Olympus Medical Systems Corporation

Sadayoshi Takami

Yoshitaka Honda

Kazue Tanaka

Takashi Irisawa

Toshifumi Katsuragi

Tsuyoshi Hayashida

Shohei Moriwaki

Tsunetaka Akagane

Norikiyo Shibata

Gen Kato

Shunsuke Matsui

Satomi Sakao

Shogo Hasegawa

Hiroko Sakamoto

Shibata Norikiyo

A medical device and a method of operating the same are provided. In a method of operating a medical device for ultrasonic treatment, the medical device including an ultrasonic instrument having a vibration transmission member that vibrates ultrasonically, a power source configured to supply electric energy to the ultrasonic instrument, and a processor including a control unit operably connected to the power source, the method includes: controlling supply of the electric energy to the ultrasonic instrument, obtaining a temperature value related to a temperature of the vibration transmission member, the vibration transmission member being separate from a transducer, and controlling the power source to reduce or stop the supply of electric energy of the power source based on the rate of change of the temperature value.

Medical device and method for controlling the same including discriminating end-of-cut conditions based on temperature

A control device includes: a power source configured to supply a high frequency power to a treatment instrument configured to treat a living tissue; a detecting circuit configured to sequentially detect a phase difference between a voltage and a current of the high frequency power supplied to the treatment instrument; and a processor configured to control operation of the power source, the processor being configured to sequentially calculate a variation of the phase difference detected by the detecting circuit, compare the calculated variation of the phase difference with a first threshold set for a variation of a phase difference, and perform reduction processing to reduce output of the high frequency power to be supplied to the treatment instrument when it is determined that the calculated variation of the phase difference is equal to or smaller than the first threshold.

Control device, treatment system, and control method

A treatment system includes a treatment tool having a heater and bipolar electrodes to grip a treatment target. An energy source apparatus is used to electrically communicate with the treatment tool. The energy output source is configured to output high-frequency electric power to the bipolar electrodes through a first circuit. A high-frequency current flows through the treatment target between the bipolar electrodes. The energy output source is configured to output heater electric power to the heater for generating heat through a second circuit. At least one processor is used to control the energy output source.

Energy source apparatus

A treatment system comprises a treatment tool and an energy source apparatus is used to electrically communicate with the treatment tool. The energy output source is configured to output high-frequency electric power to the bipolar electrodes so as to cause a high-frequency current to flow through a treatment target between the bipolar electrodes. A processor is used to control the energy output source. The processor performs an output control process on the heater electric power so that the heater reaches a target temperature and maintains at the target temperature. The processor detects a parameter related to the heater from the heater in the output control process based on the target temperature. The processor sets a threshold value used to determine to stop or to lower the output to the bipolar electrodes while the treatment target is being modified by the high-frequency current applied thereto based on the detected parameter.

A treatment system includes a treatment tool and an energy source apparatus used to supply electrical energy to the treatment tool. The treatment tool includes a heater and bipolar electrodes to grip a treatment target. The energy source apparatus includes a processor to control the output to the bipolar electrodes and the heater, respectively. The processor directs the output to the bipolar electrodes and detects an initial value of the impedance of the treatment target. The processor determines whether or not the impedance has reached a minimum value and then retrieves a parameter that is detected before the minimum value of the impedance is detected. The processor performs a first process and/or a second process based on the acquired parameter after the minimum value is detected. The first process determines whether or not the output to the heater is required. The second process sets a target value.

A treatment system includes a treatment tool and an energy source apparatus. The treatment tool includes a heater and bipolar electrodes to grip a treatment target. The energy source apparatus supplies electrical energy to the treatment tool. A processor controls the output to the bipolar electrodes and the heater. The processor causes a high-frequency electric power to be output to the bipolar electrodes and detects a parameter that varies depending on tissue volume of the treatment target. The processor sets a target value related to an output control process for controlling the output to the heater. The processor controls the output to the heater so as to modify the treatment target with the heat of the heater. The processor increases the output and temperature to the heater until at least a predetermined point of time after starting the output control process for controlling the output to the heater.

A control device controls a surgical instrument including a heater. The control device includes a first power supply, a second power supply, a resistance value calculation section, and an output control circuit. The first power supply outputs a first current having a first frequency and supplied to the heater. The second power supply outputs a second current combined with the first current, supplied to the heater and having a second frequency different from the first frequency. The resistance value calculation section separates a signal component related to the second current from the first and second currents having passed through the heater, and calculates a heater resistance value based on the signal component. The output control circuit controls a temperature of the heater based on the heater resistance value.

Control device for surgical instrument, and surgical system

A heating treatment apparatus to treat a living tissue by heating the living tissue includes a first holding member and a second holding member, a first heat generating element provided on the first holding member, a second heat generating element provided on the second holding member, a power supply unit supplying electric power to cause the first heat generating element and the second heat generating element to generate heat, and a control unit controlling operations of the power supply unit. The control unit switches a mode between a first mode and a second mode during treatment of the living tissue. Temperatures of the first heat generating element and the second heat generating element are controlled to the same temperature in the first mode and to different temperatures in the second mode.

Heating treatment apparatus and controller of the same

A treatment system includes a power source for heat generation which outputs power for heat generation, a grasping member having a heating element which applies the power for heat generation as thermal energy to a grasped living tissue and is disposed at a grasping surface, and a control section which repeats a first control mode of performing control such that the heating element reaches a first temperature and a second control mode of performing control such that the heating element becomes lower than the first temperature, and controls the power source for heat generation according to a temperature change parameter based on change in temperature of the heating element in the first control mode or the second control mode so as to end application of the thermal energy.

Treatment system and actuation method for treatment system

A living tissue bonding system includes a treatment instrument having a heating element which applies thermal energy to living tissue, an element temperature measuring section configured to measure an element temperature Tof the heating element, a power source configured to generate power, a first calculating section configured to estimate a temperature difference &#x394;T between the element temperature Tand a temperature Tof the living tissue using a table or an equation stored beforehand in order to estimate the temperature difference &#x394;T based on an output value of the power source, a second calculating section configured to estimate the tissue temperature Tfrom the element temperature Tand the temperature difference &#x394;T estimated by the first calculating section, and a control section configured to control the power source based on the tissue temperature Testimated by the second calculating section.

Living tissue bonding system, treatment instrument control apparatus, and operation method of living tissue bonding system

A living tissue bonding system including: a sandwiching section for sandwiching living tissue; a power source for supplying to the living tissue treatment energy for bonding the living tissue sandwiched by the sandwiching section; a temperature measuring section for measuring a temperature of the living tissue sandwiched by the sandwiching section; a calculation section calculating, from the temperature of the living tissue measured by the temperature measuring section and a time period of applying the treatment energy, a time integral value of the temperature of the living tissue; a comparison section comparing the time integral value of the temperature of the living tissue calculated by the calculation section with a predetermined setting value; and an instruction section giving an instruction based on a result of the comparison by the comparison section.

Living tissue bonding system and method for operating living tissue bonding system

A high-frequency generator for an electric surgical instrument that treats a living tissue includes a power supply that generates a power, and a resonant circuit that excites a high-frequency signal. The resonant circuit includes a parallel resonant circuit which is connected to the power supply, and a series resonant circuit which is coupled to the parallel resonant circuit and is connected to the electric surgical instrument. The parallel resonant circuit has a higher parallel resonant frequency than a series resonant frequency of the series resonant circuit.

High-frequency generator for electric surgical instrument

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.

High-frequency control unit and high-frequency treatment system

An electrosurgical treatment system includes an output section that supplies a high-frequency output to a treatment instrument, a detecting section that detects a voltage and an electric current of the high-frequency output in the output section, a phase-difference detecting section that calculates a phase difference between the detected voltage and electric current, and a control section that switches, on the basis of a change in the phase difference, a first phase for drying a biological tissue by applying the high-frequency output to the biological tissue while increasing the voltage to a second phase for coapting the biological tissue by performing, with a set value of a voltage determined according to a voltage value of the high-frequency output at an end point in time of the first phase, constant voltage control.

Electrosurgical treatment system

A treatment system includes a power source for heat generation which outputs power for heat generation, a grasping member having a heating element which applies the power for heat generation as thermal energy to a living tissue, and a control section which performs constant temperature control on the power source for heat generation on the basis of temperature of the heating element, and controls the power source for heat generation so as to finish application of the thermal energy and complete treatment if the power for heat generation becomes not more than predetermined threshold power which is independent of a type of the living tissue or if a rate of decrease in the power for heat generation becomes not more than a predetermined threshold rate.

Growing community of inventors

Hachioji, Japan

Sadayoshi Takami