WO2024252928A1 - 高周波処置装置および高周波処置方法 - Google Patents
高周波処置装置および高周波処置方法 Download PDFInfo
- Publication number
- WO2024252928A1 WO2024252928A1 PCT/JP2024/018824 JP2024018824W WO2024252928A1 WO 2024252928 A1 WO2024252928 A1 WO 2024252928A1 JP 2024018824 W JP2024018824 W JP 2024018824W WO 2024252928 A1 WO2024252928 A1 WO 2024252928A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- frequency
- connection state
- electrodes
- electrode
- unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1477—Needle-like probes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/1206—Generators therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/0016—Energy applicators arranged in a two- or three dimensional array
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00434—Neural system
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00577—Ablation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00875—Resistance or impedance
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/1206—Generators therefor
- A61B2018/124—Generators therefor switching the output to different electrodes, e.g. sequentially
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B2018/1405—Electrodes having a specific shape
- A61B2018/1425—Needle
- A61B2018/143—Needle multiple needles
Definitions
- the present invention relates to a high-frequency treatment device and a high-frequency treatment method that perform various treatments by passing a high-frequency current through a treatment target.
- Radiofrequency thermocoagulation uses a radiofrequency current flowing from an electrode to heat part of the nerve tissue to a temperature of around 80°C for several minutes, causing it to thermally coagulate, thereby blocking pain signals.
- Pulsed radiofrequency uses a continuous flow of radiofrequency current through part of the nerve tissue, heating it to a temperature of 42°C or less for about 10 minutes, blocking pain signals without damaging the nerves.
- the present invention aims to provide a high-frequency treatment device and a high-frequency treatment method that can efficiently heat a wide area.
- the high-frequency treatment device of the present invention is characterized by having a plurality of high-frequency output units that output high-frequency power, a plurality of electrodes that are connected to the high-frequency output units and placed on a treatment target, a switching unit that is provided between the high-frequency output units and the electrodes and that switches which of the electrode sets each consisting of at least two of the electrodes to which a high-frequency current flows, and a control unit that controls the switching unit to switch, at a specific period, between a first connection state in which a different electrode set is connected to each of the high-frequency output units during treatment and a second connection state in which an electrode set formed by combining the plurality of electrode sets in the first connection state is connected to one of the high-frequency output units.
- the high-frequency treatment method of the present invention is a high-frequency treatment method in which a plurality of electrodes are placed on a treatment target, and a high-frequency current is passed from a plurality of high-frequency output units to any one of the electrode sets, each of which is a combination of at least two of the electrodes, to perform treatment, and is characterized in that during treatment, a first connection state in which a different electrode set is connected to each of the high-frequency output units and a second connection state in which an electrode set formed by combining the plurality of electrode sets in the first connection state is connected to one of the high-frequency output units are switched at a specific period.
- the high-frequency treatment device and method of the present invention allow the heating state in the first connection state and the heating state in the second connection state to complement each other's less heated areas, making it possible to efficiently heat a wide area.
- the second connection state is a connection state in which the electrodes included in the same electrode group in the first connection state have the same polarity.
- the second connection state is a connection state in which the electrode set including all of the electrodes is connected to one of the high-frequency output sections.
- the high-frequency treatment device of the present invention preferably has an impedance measuring unit that is connected to the electrodes via the switching unit and measures impedance by outputting an impedance measurement signal, and the control unit controls the switching unit to provide a third connection state between the first connection state and the second connection state in which the electrode set is connected to the impedance measuring unit.
- this stop period can be utilized to perform highly accurate impedance measurements using a dedicated impedance measuring unit, making it possible to efficiently heat a wide area.
- the high-frequency treatment device and method of the present invention have the excellent effect of being able to efficiently heat a wide area.
- 1 is a schematic diagram showing the appearance of a high-frequency treatment device according to an embodiment of the present invention
- 1 is a block diagram showing an outline of the internal configuration of a high-frequency treatment device
- 13A and 13B are schematic diagrams showing the connection state when performing high-frequency thermal coagulation with a quad-polar output format.
- 1A to 1D are schematic diagrams showing how high-frequency current flows in a treatment subject.
- 11A to 11C are schematic diagrams showing connection states for measuring impedance when the output format is quad-polar.
- 1A and 1B are schematic diagrams showing an example in which electrodes included in the same first electrode group in the first connection state are made not to have the same polarity in the second connection state.
- 1A and 1B are schematic diagrams showing an example in which more than four electrodes can be used.
- 13A and 13B are schematic diagrams showing an example in which three or more high-frequency output units are provided.
- FIG. 1 is a schematic diagram showing the appearance of a high-frequency treatment device 1 according to an embodiment of the present invention.
- the high-frequency treatment device 1 of this embodiment is for applying a high-frequency voltage to a living body such as a human or animal to be treated, passing a high-frequency current through the living body, and performing treatment using either high-frequency thermocoagulation or pulsed high-frequency.
- the high-frequency treatment device 1 comprises a main body 10, four electrodes 20 (21, 22, 23, and 24) connected to the main body 10, and a return electrode plate 30 connected to the main body 10.
- the main body 10 houses or supports the internal configuration described below.
- the operation unit 16 is composed of a touch panel display 16a that accepts input operations such as various settings and displays various information, a start button 16b that accepts an operation to start treatment, a stop button 16c that accepts an operation to end treatment, a control knob 16d for starting output and adjusting the output voltage during manual operation, an output indicator 16e that is lit while high-frequency power is being output, and an alarm indicator 16f that is lit when an alarm is issued.
- a handle 17 is provided on the top of the main body 10 for carrying the main body 10. Also, although not shown, the back of the main body 10 is provided with a power connector that is connected to a commercial AC power source to receive power, a power switch that accepts the power-on operation, and a USB connector for connecting an external storage means. Also, a speaker (alarm) that outputs a buzzer sound is provided inside the main body 10 along with a drive circuit.
- the electrode 20 is inserted into the inside of a target for high-frequency treatment in order to pass a high-frequency current through the target.
- the electrode 20 is configured in a needle-like shape that can be directly inserted into the human body, etc.
- the electrode 20 also has a built-in thermocouple 20c for measuring the temperature around the electrode 20 during treatment.
- the electrodes 20 are electrically connected to the main body 10 via the electrode cable 26 and the electrode connectors 11 to 14. In this embodiment, up to four electrodes 20 (21 to 24) can be used simultaneously.
- the electrodes 20 may be of other shapes, such as a rod-like shape that is inserted into a needle tube or catheter, or a pad-like shape that is placed on the surface of the living body.
- the thermocouple 20c may be provided separately from the electrodes 20.
- the counter electrode 30 is a flat electrode that is attached to the surface of the treatment target, and is used to pass a high-frequency current between it and the electrode 20. In this embodiment, it is possible to pass a high-frequency current between the electrode 20 and the counter electrode 30, or between the electrodes 20 (for example, between the electrodes 21 and 22) to perform treatment.
- the counter electrode 30 is electrically connected to the main body 10 via the counter electrode cable 31 and the counter electrode connector 15. Note that, although the counter electrode 30 is configured as a rectangular flat plate in this embodiment, the counter electrode 30 may have other shapes.
- FIG. 2 is a block diagram showing an outline of the internal configuration of the high-frequency treatment device 1.
- the high-frequency treatment device 1 includes, as its internal configuration, a high-frequency output section 40 (first high-frequency output section 41 and second high-frequency output section 42), an impedance measuring section 50, a stimulation signal output section 60, a temperature measuring section 70, a voltage measuring section 80, and a control section 100 (main control section 101 and sub-control section 102).
- the high frequency output unit 40 generates and outputs high frequency power of a preset frequency (e.g., 470-490 kHz) and a voltage (e.g., 18-80 Vrms) based on the power supplied from a commercial AC power source and a control signal from the main control unit 101.
- a preset frequency e.g., 470-490 kHz
- a voltage e.g., 18-80 Vrms
- the high-frequency output unit 40 is connected to the electrode connectors 11-14 and the return electrode connector 15 via the switching unit 90.
- the electrode 20 is connected to the high-frequency output unit 40 via the electrode connectors 11-14 and the switching unit 90
- the return electrode 30 is connected to the high-frequency output unit 40 via the return electrode connector 15 and the switching unit 90.
- Each of the high-frequency output units 40 is composed of a known circuit having a transformer, which insulates the treatment target from the commercial AC power supply.
- the impedance measuring unit 50 is composed of known circuits, etc., and generates and outputs an impedance measurement signal consisting of relatively weak AC power to measure the impedance between the electrode 20 and the return electrode 30 or between the electrodes 20, i.e., the impedance of the site through which high-frequency current flows in the treatment subject.
- the impedance measuring unit 50 is connected to the electrode connectors 11-14 and the return electrode connector 15 via the switching unit 90.
- the electrode 20 is connected to the impedance measuring unit 50 via the electrode connectors 11-14 and the switching unit 90
- the return electrode 30 is connected to the impedance measuring unit 50 via the return electrode connector 15 and the switching unit 90.
- the impedance measuring unit 50 outputs an impedance measurement signal under the control of the sub-control unit 102, and samples and discretizes the impedance measurement signal that has flowed through the treatment target at a predetermined sampling period, and performs a discrete Fourier transform to calculate the real and imaginary parts of the complex impedance. These calculated values are sent to the sub-control unit 102.
- the impedance measurement signal is a sine wave with a frequency of 50 kHz, and the maximum output current is set to approximately 4 mA and the maximum output voltage to approximately 500 mVrms. Details will be described later, but in this embodiment, the intermittent output of the impedance measurement signal continues before and after the start of treatment, making it possible to perform high-frequency treatment efficiently.
- the stimulation signal output unit 60 is composed of known circuits, etc., and generates and outputs a stimulation signal for nerve exploration. Normally, nerve exploration is performed before high-frequency treatment is performed to detect the presence or absence of nerves (sensory nerves and motor nerves) around the electrode 20.
- the stimulation signal output unit 60 is connected to the electrode connectors 11-14 and the return electrode connector 15 via the switching unit 90. Therefore, the electrode 20 is connected to the stimulation signal output unit 60 via the electrode connectors 11-14 and the switching unit 90, and the return electrode 30 is connected to the stimulation signal output unit 60 via the return electrode connector 15 and the switching unit 90.
- the stimulation signal output unit 60 operates under the control of the sub-control unit 102, and sends a stimulation signal through the treatment target via the electrode 20.
- the user confirms the presence of sensory nerves around the electrode 20 when the treatment target senses the stimulation signal, and confirms the presence of motor nerves around the electrode 20 when the treatment target's muscle contracts in response to the stimulation signal.
- the stimulation signal is a bipolar square wave with a predetermined pulse width, and is output intermittently at a predetermined frequency.
- the temperature measurement unit 70 is composed of known circuits, etc., and measures the temperature around the electrode 20 using a thermocouple 20c.
- the temperature measurement unit 70 is connected to the thermocouple 20c in the electrode 20 via the electrode connectors 11 to 14, but a separate connector for the thermocouple 20c may also be provided.
- the temperature measurement unit 70 operates under the control of the sub-control unit 102, generating a temperature measurement signal (e.g., 25 mV/°C) based on the signal received from the thermocouple 20c and sending it to the sub-control unit 102.
- the temperature measurement unit 70 also outputs an output stop signal to the high frequency output unit 40 and the main control unit 101 if a temperature abnormality occurs (if the measured temperature value is 7°C or more higher than the set temperature).
- the high frequency output unit 40 that receives the output stop signal stops outputting high frequency power.
- the main control unit 101 that receives the output stop signal turns on the alarm indicator 16f and outputs an alarm buzzer sound from the speaker.
- the voltage measurement unit 80 is composed of known circuits, etc., and measures the voltage of the high frequency power output by the high frequency output unit 40.
- the voltage measurement unit 80 individually measures the voltage of the high frequency power output by the first high frequency output unit 41 and the second high frequency output unit 42, and generates a voltage measurement signal based on this and transmits it to the main control unit 101.
- the switching unit 90 is composed of multiple reed relays or semiconductor switches, and switches the connection state between the first high-frequency output unit 41, the second high-frequency output unit 42, the impedance measuring unit 50, and the stimulation signal output unit 60 and the electrode connectors 11 to 14 and the return electrode connector 15.
- the switching unit 90 operates under the control of the sub-control unit 102, and switches which of the first high-frequency output unit 41, the second high-frequency output unit 42, the impedance measurement unit 50, and the stimulation signal output unit 60 is connected to the electrode connectors 11-14 and the return electrode connector 15. In other words, the switching unit 90 switches whether to output high-frequency power, an impedance measurement signal, or a stimulation signal to the electrodes 21-24 and return electrode 30 connected to the electrode connectors 11-14 and the return electrode connector 15.
- the switching unit 90 also operates under the control of the sub-control unit 102, and switches which combination (i.e., electrode set) of the electrodes 21-24 and return electrode 30 connected to the electrode connectors 11-14 and the return electrode connector 15 is to receive the high-frequency current, the impedance measurement signal, or the stimulation signal.
- the control unit 100 controls each part of the high-frequency treatment device 1 to perform high-frequency treatment.
- the control unit 100 is made up of a main control unit 101 that controls the high-frequency output unit 40 and the operation unit 16, and a sub-control unit 102 that controls the impedance measurement unit 50, the stimulation signal output unit 60, the temperature measurement unit 70, and the switching unit 90.
- the sub-control unit 102 which controls the parts located closer to the treatment target than the high-frequency output unit 40, separately from the main control unit 101, it is possible to more reliably insulate the treatment target from the commercial AC power source.
- the main control unit 101 has a known configuration including a CPU, ROM, RAM, and auxiliary storage device.
- the main control unit 101 starts and ends high-frequency treatment based on input operations received by the operation unit 16 and information stored in the ROM, etc.
- the main control unit 101 also controls the output of the high-frequency output unit 40 during treatment. Specifically, the main control unit 101 controls the output so that the measured temperature value received from the sub-control unit 102 is approximately equal to the set temperature, using the output voltage as the manipulated variable in high-frequency thermal coagulation method and the output pulse width as the manipulated variable in pulsed high-frequency method (the output voltage is fixed to the voltage setting value).
- the main control unit 101 also controls the on/off of the high-frequency power output at a set cycle in both high-frequency thermal coagulation method and pulsed high-frequency method.
- the main control unit 101 also displays information such as elapsed time, temperature measurement values, impedance measurement values, voltage measurement values, and current measurement values on the touch panel display 16a.
- the current measurement values are calculated by the main control unit 101 from the voltage measurement values and impedance measurement values.
- the sub-controller 102 has a known configuration including a CPU, ROM and RAM.
- the sub-controller 102 calculates a temperature measurement value based on the temperature measurement signal received from the temperature measuring unit 70 and transmits it to the main control unit 101.
- the sub-controller 102 also calculates an impedance measurement value based on the real and imaginary parts of the complex impedance received from the impedance measuring unit 50 and a calibration value generated in advance and transmits it to the main control unit 101.
- These calibration values are generated by the sub-controller 102 each time the high-frequency treatment device 1 is started.
- the sub-controller 102 causes the impedance measuring unit 50 to measure the impedance of the built-in 100 ⁇ fixed resistor and 1 k ⁇ fixed resistor. Then, based on the measurement result of the 100 ⁇ fixed resistor, a low resistance calibration value is generated, based on the measurement result of the 1 k ⁇ fixed resistor, and these are stored in RAM.
- the impedance measurement value is calculated using the high resistance calibration value in the first calculation, and in subsequent calculations, a predetermined value (300 ⁇ or 400 ⁇ ) is used as a threshold value, and either the low resistance calibration value or the high resistance calibration value is used based on the previous calculation result.
- the sub-controller 102 also controls the on/off of multiple switches provided in the switching unit 90, and switches the connection states between the first high-frequency output unit 41, the second high-frequency output unit 42, the impedance measuring unit 50 and the stimulation signal output unit 60 and the electrode connectors 11-14 and the return electrode connector 15. Specifically, the sub-controller 102 causes the switching unit 90 to switch the connection states based on the connection states of the electrodes 20 and return electrode 30 detected from the electrode connectors 11-14 and the return electrode connector 15, as well as the mode information and output format information received from the main controller 101.
- a menu mode in which various settings are made
- a stimulation mode in which a stimulation signal is output to perform nerve exploration
- a region mode in which high-frequency power is output to perform high-frequency thermocoagulation
- a PRF mode in which high-frequency power is output to perform pulsed high-frequency therapy.
- monopolar which uses at least one of electrodes 21-24 and return electrode 30 as an electrode set
- bipolar which uses electrodes 21 and 22 or electrodes 23 and 24 as an electrode set
- tripolar which uses electrodes 21-23 as an electrode set
- quadpolar which uses electrodes 21-24 as an electrode set.
- Figures 3A and 3B are schematic diagrams showing the connection state when performing high-frequency thermal coagulation with quad-polar output format. Before starting high-frequency thermal coagulation, various checks are performed, the electrodes 20 are placed on the treatment target, and nerve exploration is performed using the placed electrodes 20. The main control unit 101 starts treatment based on the time and temperature set in region mode and the start button 16b or control knob 16d accepting a start operation.
- the sub-controller 102 controls the switching unit 90 to switch the connection state between the high-frequency output unit 40 and the electrode 20 at a specific period (100 msec in this embodiment). Specifically, the sub-controller 102 controls the switching unit 90 to switch the connection state between the first connection state Sq1 shown in FIG. 3A and the second connection state Sq2 shown in FIG. 3B.
- the first connection state Sq1 is a connection state in which a different first electrode set 200 is connected to each of the two high frequency output units 40.
- the first electrode set 201 consisting of electrodes 21 and 22 is connected to the first high frequency output unit 41
- the first electrode set 202 consisting of electrodes 23 and 24 is connected to the second high frequency output unit 42.
- the second connection state Sq2 is a connection state in which a second electrode set 210, which is a combination of multiple first electrode sets 200, is connected to one high frequency output section 40.
- the second electrode set 210 consisting of electrodes 21 to 24 (i.e., an electrode set which is a combination of first electrode sets 201 and 202) is connected to the first high frequency output section 41.
- electrodes 21 and 22 have the same polarity (connected to the same output terminal), and electrodes 23 and 24 have the same polarity.
- FIGS. 4A to 4D are schematic diagrams showing how the high-frequency current flows in the treatment target, showing the electrode 20 placed on the treatment target as viewed in the axial direction.
- Figures 4A and 4B show the case where electrodes 21 to 24 are arranged in a row.
- the first connection state Sq1 as shown in Figure 4A, high-frequency current flows between electrodes 21 and 22, and high-frequency current flows between electrodes 23 and 24.
- the treatment target is heated in area 301 between electrodes 21 and 22 and their surroundings, and area 302 between electrodes 23 and 24 and their surroundings.
- an unheated area may occur between area 301 and area 302, as shown in Figure 4A.
- Figures 4C and D show the case where electrodes 21 to 24 are arranged in two rows.
- the treatment target in area 301 between electrodes 21 and 22 and in the surrounding area, and in area 302 between electrodes 23 and 24 and in the surrounding area.
- the heating states in the two connection states complement each other, making it possible to efficiently heat a wide area between and around the four electrodes 21-24 in a single treatment.
- the electrodes 21 and 22 included in the first electrode set 201 have the same polarity, and the electrodes 23 and 24 included in the first electrode set 202 have the same polarity, thereby reducing the degree to which the regions 301 and 302 are double heated, making uneven heating less likely to occur. Furthermore, by reducing the degree of double heating in this manner, the frequency of intervention of output control (reduction of output voltage) to lower the temperature is also reduced, allowing for more efficient heating.
- all of the electrodes 21 to 24 are included in one second electrode set 210, making it possible to comprehensively heat a wide area between and around all of the electrodes 21 to 24.
- a 9 msec stop period during which the output of high frequency power from the first high frequency output unit 41 and the second high frequency output unit 42 is stopped is provided at a cycle of 100 msec, and the switching operation of the switching unit 90 is performed during this stop period.
- the impedance measurement unit 50 measures the impedance during this stop period, making it possible to perform treatment more efficiently.
- Figures 5A to 5C are schematic diagrams showing the connection state for measuring impedance when the output format is quad-polar.
- the sub-controller 102 controls the switching unit 90 so that the third connection state Si1, Si2 or Si3 that connects the impedance measuring unit 50 and the electrode 20 continues for 5 msec during the pause period between the first connection state Sq1 and the second connection state Sq2.
- the sub-controller 102 then controls the impedance measuring unit 50 so that it outputs an impedance measurement signal during this 5 msec period to measure the impedance.
- Si1 to Si3 there are three types of third connection states Si1 to Si3. That is, in this embodiment, there are three types of third connection states: Si1 (FIG. 5A) in which electrodes 21 and 22 are connected to the impedance measurement unit 50 to measure the impedance of the first electrode group 201; Si2 (FIG. 5B) in which electrodes 23 and 24 are connected to the impedance measurement unit 50 to measure the impedance of the first electrode group 202; and Si3 (FIG. 5C) in which electrodes 21 to 24 are connected to the impedance measurement unit 50 to measure the impedance of the second electrode group 210.
- the switching unit 90 first switches from the first connection state Sq1 to the third connection state Si1 or Si2, and after 5 msec, switches from the third connection state Si1 or Si2 to the second connection state Sq2.
- the state to be switched to first is changed for each switch.
- the switching unit 90 first switches from the second connection state Sq2 to the third connection state Si3 during the stop period, and after 5 msec, switches from the third connection state Si3 to the first connection state Sq1.
- the impedance measurement unit 50 measures the impedance during the downtime required to switch between the first connection state Sq1 and the second connection state Sq2, making it possible to measure the impedance with higher accuracy than the conventional method of calculating the impedance from the measured voltage and current values of the high-frequency power. Furthermore, defects such as misalignment or detachment of the electrode 20 can be detected from changes in the measured impedance value during treatment, and by improving the accuracy of the impedance measurement, it becomes easier to detect such defects early and it becomes possible to efficiently perform heating using high-frequency current.
- FIGS. 6A and 6B are schematic diagrams showing an example in which electrodes 20 included in the same first electrode group 200 in the first connection state Sq1 do not have the same polarity in the second connection state Sq2.
- electrodes 21 and 23 have the same polarity
- electrodes 22 and 23 have the same polarity.
- the third connection state Si3 in this example is a connection state in which the first high frequency output unit 41 in the second connection state Sq2 is replaced with an impedance measurement unit 50.
- the polarity of the electrodes 21-24 in the second connection state Sq2 is not particularly limited, and can be appropriately selected depending on the type and state of the area to be heated, and the arrangement of the electrodes 21-24. Furthermore, the polarity of the electrodes 21-24 in the second connection state Sq2 may be changeable before treatment, or may be changeable during treatment.
- FIGS. 7A and 7B are schematic diagrams showing an example in which five or more electrodes 20 can be used. Specifically, in this example, an electrode connector 18 and an electrode 25 are added, and a first electrode set 201 is made up of electrodes 23 to 25, and a second electrode set 210 is made up of electrodes 21 to 25.
- the number of electrodes 20 that can be used by the high-frequency treatment device 1 and the number of electrodes 20 included in the first electrode set 200 in the first connection state Sq1 are not particularly limited, and any number can be used. Furthermore, it goes without saying that it is not necessary to use all of the electrodes 20 in the treatment, and only a portion of the usable electrodes 20 may be used.
- FIGS. 8A and 8B are schematic diagrams showing an example of a case where three or more high-frequency output units 40 are provided. Specifically, in this example, a third high-frequency output unit 43, electrode connectors 18 and 19, and electrodes 25 and 26 are added. In addition, a first electrode set 203 consisting of electrodes 25 and 26 connected to the third high-frequency output unit 43 is added to the first connection state Sq1, and a second electrode set 210 is composed of electrodes 21 to 26.
- the number of high-frequency output units 40 provided in the high-frequency treatment device 1 is not particularly limited, and any number can be adopted together with the electrodes 20, and the number of first electrode sets 200 can be increased according to the number of high-frequency output units 40.
- the second electrode set 210 does not need to be a combination of all of the first electrode sets 200, and for example, in the example shown in Figures 8A and B, the second electrode set 210 may be composed of electrodes 21 to 24. Furthermore, it goes without saying that it is not necessary to use all of the high-frequency output units 40 in treatment.
- the high-frequency treatment device and high-frequency treatment method of the present invention are not limited to the above-mentioned embodiments, and various modifications can be made within the scope of the gist of the present invention.
- the high-frequency treatment device and high-frequency treatment method of the present invention are not limited to those performing high-frequency thermocoagulation and pulsed high-frequency treatment, and may be used for other purposes, such as cauterization of tumors.
- the treatment target is not limited to the human body or animals, and may be other objects.
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Plasma & Fusion (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
- Otolaryngology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- General Induction Heating (AREA)
- Drying Of Semiconductors (AREA)
- Radiation-Therapy Devices (AREA)
- Electrotherapy Devices (AREA)
Abstract
Description
40 高周波出力部
50 インピーダンス測定部
20 電極
90 切替部
100 制御部
200 第1の電極組
210 第2の電極組
Si1~Si3 第3の接続状態
Sq1 第1の接続状態
Sq2 第2の接続状態
Claims (5)
- 高周波電力を出力する複数の高周波出力部と、
前記高周波出力部に接続され、処置対象に配置される複数の電極と、
前記高周波出力部と前記電極の間に設けられ、少なくとも2つの前記電極を組み合わせた電極組のうちのいずれの前記電極組に高周波電流が流れるかを切り替える切替部と、
処置中に前記高周波出力部毎に異なる前記電極組を接続させる第1の接続状態と1つの前記高周波出力部に前記第1の接続状態における複数の前記電極組を合成した前記電極組を接続させる第2の接続状態とを特定の周期で切り替えるように前記切替部を制御する制御部と、を有することを特徴とする高周波処置装置。 - 請求項1に記載の高周波処置装置において、
前記第2の接続状態は、前記第1の接続状態において同一の前記電極組に含まれていた前記電極が同一の極性となる接続状態であることを特徴とする高周波処置装置。 - 請求項1に記載の高周波処置装置において、
前記第2の接続状態は、1つの前記高周波出力部に全ての前記電極を含む前記電極組を接続させる接続状態であることを特徴とする高周波処置装置。 - 請求項1から3までのいずれか1項に記載の高周波処置装置において、
前記切替部を介して前記電極に接続され、インピーダンス測定信号を出力することでインピーダンスを測定するインピーダンス測定部を有し、
前記制御部は、前記第1の接続状態と前記第2の接続状態の間に前記インピーダンス測定部に前記電極組を接続させる第3の接続状態を設けるように前記切替部を制御することを特徴とする高周波処置装置。 - 処置対象に複数の電極を配置し、少なくとも2つの前記電極を組み合わせた電極組のうちいずれかの前記電極組に複数の高周波出力部からの高周波電流を流して処置を行う高周波処置方法において、
処置中に前記高周波出力部毎に異なる前記電極組を接続させる第1の接続状態と1つの前記高周波出力部に前記第1の接続状態における複数の前記電極組を合成した前記電極組を接続させる第2の接続状態とを特定の周期で切り替えることを特徴とする高周波処置方法。
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP24819161.1A EP4725432A1 (en) | 2023-06-07 | 2024-05-22 | High-frequency treatment device and high-frequency treatment method |
| JP2025526044A JPWO2024252928A1 (ja) | 2023-06-07 | 2024-05-22 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2023-093662 | 2023-06-07 | ||
| JP2023093662 | 2023-06-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024252928A1 true WO2024252928A1 (ja) | 2024-12-12 |
Family
ID=93795441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2024/018824 Ceased WO2024252928A1 (ja) | 2023-06-07 | 2024-05-22 | 高周波処置装置および高周波処置方法 |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4725432A1 (ja) |
| JP (1) | JPWO2024252928A1 (ja) |
| TW (1) | TW202513018A (ja) |
| WO (1) | WO2024252928A1 (ja) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150265333A1 (en) * | 2012-10-25 | 2015-09-24 | Kyong-Min Shin | System for ablation utilizing multiple electrodes and method for controlling same |
| US20170049513A1 (en) * | 2009-11-06 | 2017-02-23 | Cosman Medical, Inc. | Multiple electrode generator |
| JP2018511444A (ja) | 2015-04-13 | 2018-04-26 | バゾベリー,カルロス,フェルナンド | 高周波除神経ニードルおよび方法 |
| JP2020517371A (ja) * | 2017-04-28 | 2020-06-18 | ストライカー・コーポレイション | Rfによる神経アブレーションの制御コンソール及び付属品並びにrfによる神経アブレーションを行う方法 |
| WO2020262279A1 (ja) * | 2019-06-25 | 2020-12-30 | 株式会社トップ | 高周波処置装置および高周波処置方法 |
| KR20220155220A (ko) * | 2021-05-14 | 2022-11-22 | 주식회사 제이시스메디칼 | 모노폴라 타입 전류 및 바이폴라 타입 전류의 순차 출력 및 연속 출력이 가능한 고주파 전류 출력장치 |
-
2024
- 2024-05-22 EP EP24819161.1A patent/EP4725432A1/en active Pending
- 2024-05-22 WO PCT/JP2024/018824 patent/WO2024252928A1/ja not_active Ceased
- 2024-05-22 JP JP2025526044A patent/JPWO2024252928A1/ja active Pending
- 2024-05-30 TW TW113119918A patent/TW202513018A/zh unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170049513A1 (en) * | 2009-11-06 | 2017-02-23 | Cosman Medical, Inc. | Multiple electrode generator |
| US20150265333A1 (en) * | 2012-10-25 | 2015-09-24 | Kyong-Min Shin | System for ablation utilizing multiple electrodes and method for controlling same |
| JP2018511444A (ja) | 2015-04-13 | 2018-04-26 | バゾベリー,カルロス,フェルナンド | 高周波除神経ニードルおよび方法 |
| JP2020517371A (ja) * | 2017-04-28 | 2020-06-18 | ストライカー・コーポレイション | Rfによる神経アブレーションの制御コンソール及び付属品並びにrfによる神経アブレーションを行う方法 |
| WO2020262279A1 (ja) * | 2019-06-25 | 2020-12-30 | 株式会社トップ | 高周波処置装置および高周波処置方法 |
| KR20220155220A (ko) * | 2021-05-14 | 2022-11-22 | 주식회사 제이시스메디칼 | 모노폴라 타입 전류 및 바이폴라 타입 전류의 순차 출력 및 연속 출력이 가능한 고주파 전류 출력장치 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2024252928A1 (ja) | 2024-12-12 |
| TW202513018A (zh) | 2025-04-01 |
| EP4725432A1 (en) | 2026-04-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US12383328B2 (en) | Profile parameter selection algorithm for electroporation | |
| CN107693108B (zh) | 外科发生器和手术系统 | |
| US8652125B2 (en) | Electrosurgical generator user interface | |
| US8343146B2 (en) | Methods for control of energy delivery to multiple energy delivery devices | |
| US20060074413A1 (en) | Method and apparatus for substantial and uniform ablation about a linear bipolar array of electrodes | |
| EP1943973A1 (en) | Ablation system, clamp and method of use | |
| US20080249523A1 (en) | Controller for flexible tissue ablation procedures | |
| CN106308923A (zh) | 用于最小化神经肌肉刺激的电外科发生器 | |
| JP2019519335A (ja) | 非侵襲性で一様及び非一様のrf方法およびシステム | |
| KR20140010374A (ko) | 피부 미용 치료를 위한 방법과 장치 | |
| JP2025129240A (ja) | 高周波処置装置および高周波処置方法 | |
| JP2022037870A (ja) | 正弦波発生器を使用するire及びrfアブレーションのブレンド | |
| JP7650455B2 (ja) | 絶対閾値及び相対閾値を使用して電極接点を検出する | |
| US20260020903A1 (en) | Variable impedance paths for delivery of electric fields | |
| WO2024252928A1 (ja) | 高周波処置装置および高周波処置方法 | |
| JP7695564B2 (ja) | 高周波処置装置 | |
| WO2024247844A1 (ja) | 高周波処置装置および高周波処置方法 | |
| EP4240266B1 (en) | System and method for detecting application of grounding pad for ablation devices | |
| JPH0663056A (ja) | 医療用高周波焼灼装置 | |
| WO2024042964A1 (ja) | 高周波処置装置 | |
| WO2023204282A1 (ja) | 高周波処置装置 | |
| AU2014200393B2 (en) | Methods for control of energy delivery to multiple energy delivery devices | |
| CN117042710A (zh) | 用于递送电场的可变阻抗路径 | |
| JPH0663059A (ja) | 医療用高周波焼灼装置 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 24819161 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2025526044 Country of ref document: JP Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2025526044 Country of ref document: JP |
|
| REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112025027051 Country of ref document: BR |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2024819161 Country of ref document: EP |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 2024819161 Country of ref document: EP Effective date: 20260107 |
|
| ENP | Entry into the national phase |
Ref document number: 2024819161 Country of ref document: EP Effective date: 20260107 |
|
| ENP | Entry into the national phase |
Ref document number: 2024819161 Country of ref document: EP Effective date: 20260107 |
|
| ENP | Entry into the national phase |
Ref document number: 2024819161 Country of ref document: EP Effective date: 20260107 |
|
| ENP | Entry into the national phase |
Ref document number: 2024819161 Country of ref document: EP Effective date: 20260107 |
|
| WWP | Wipo information: published in national office |
Ref document number: 2024819161 Country of ref document: EP |