Pulse therapy system

Abstract

This invention provides a pulse therapy system capable of rapidly controlling the output of pulsed current. [Solution] The pulse therapy system 1A comprises an intra-root canal electrode 30A placed on the affected area of ​​the subject, a counter electrode 40 placed on the subject's body, a pulse current generation unit 12 that generates a pulse current from a DC power supply unit 11 and supplies it to the intra-root canal electrode 30A and the counter electrode 40, a power supply current monitoring unit 14 that monitors the current value of the current supplied to the pulse current generation unit 12, and a control unit 15 that changes the output of the pulse current by controlling the pulse current generation unit 12 based on the current value.

Description

[Technical Field]

[0001] This invention relates to a technique for treating a subject's dental treatment area using pulsed current. [Background technology]

[0002] In the field of dental treatment, electrosurgical units that use high-frequency currents are used for purposes such as incising, coagulating, and stopping bleeding of the gums. Additionally, devices are used to cauterize the dental pulp by passing a high-frequency current between an electrode inserted into the root canal and an electrode attached to the patient's body.

[0003] As a device for cauterizing dental pulp, a device has been proposed that controls the current value of the high-frequency current flowing through the electrode so that it remains within a predetermined range, in order to avoid being affected by the resistance caused by insulating films or deposits formed on the electrode surface (see Patent Document 1).

[0004] In such a device, a current detection unit is interposed between the electrode and the high-frequency signal generation circuit. The current value applied to the electrode is detected, and the high-frequency signal generation circuit is controlled based on this current value. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2022-84238 [Overview of the Initiative] [Problems that the invention aims to solve]

[0006] However, in the apparatus described in Patent Document 1, in order to detect the current value of the high-frequency current with the current detection unit, it is necessary to extract a portion of the high-frequency current using components such as a current transformer and pass it through a rectifier circuit. As a result, a delay occurs due to capacitors and other components included in the rectifier circuit, and by the time the control of the high-frequency signal generation circuit based on the current value is to be started, the carbonization of the tissue has progressed further and the impedance has increased, which may prevent the execution of suitable treatment.

[0007] One possible method for detecting the current value of a high-frequency current in the current sensing unit is to convert the high-frequency current into Joule heat by passing it through a heating wire, measure the Joule heat using a thermocouple, and obtain the current value based on the measured temperature. However, with such a method, the circuit becomes complex and expensive, and a delay time occurs because the high-frequency current is converted into heat and the temperature is measured, making it impossible to quickly execute control when it is needed.

[0008] Furthermore, the device described in Patent Document 1 can also control the voltage or duration of the high-frequency current based on the current value of the preliminary current applied before treatment. However, in this case, since the current value is not used in real time, it is difficult to counteract rapid changes in impedance.

[0009] The present invention has been made in view of the above points, and aims to provide a pulse therapy system capable of rapidly controlling the output of pulsed current. [Means for solving the problem]

[0010] To solve the aforementioned problems, the pulse therapy system of the present invention provides a subject Inside the root canal of a tooth Placed Intracanal electrode The counter electrodes are placed on the subject's body, and a pulse current is generated from the current from the power supply unit. Intracanal electrodeand a pulse current generation unit that supplies to the counter electrode, a power supply current monitoring unit that monitors the current value of the current supplied to the pulse current generation unit, and a control unit that changes the output of the pulse current by controlling the pulse current generation unit based on the current value, The root canal electrode is provided with an axial intermediate portion which is a part in the axial direction and an insulating region which is a part in the axial direction and an insulating region which is a pulse current generation unit which is configured to generate continuous waves and intermittent waves as the pulse current and the control unit which stops or reduces the output of the pulse current when the current value is less than or equal to a predetermined value which is It is characterized by the following: [Effects of the Invention]

[0011] According to the present invention, the output of pulsed current can be controlled quickly and at low cost. [Brief explanation of the drawing]

[0012] [Figure 1] This figure schematically illustrates a pulse therapy system according to the first embodiment of the present invention. [Figure 2] This diagram schematically shows the intra-root canal electrode and counter electrode placed on the subject. [Figure 3] (a) is a schematic diagram showing a pulsed current as a continuous wave, (b) is a schematic diagram showing a pulsed current as an intermittent wave, and (c) is a schematic diagram showing a predetermined period during which a pulsed current is applied. [Figure 4] This diagram schematically shows a state in which a pause period is set for a pulsed current as an intermittent wave. [Figure 5] (a) is a schematic diagram showing the state when the amplitude of the pulsed current is changed, and (b) is a schematic diagram showing the treatment state of the affected area for each amplitude. [Figure 6] This diagram schematically illustrates a method for extending the set period during which pulsed current is applied, and the graph shows an example of how the amount of energy changes over time. [Figure 7] This figure schematically shows a pulse therapy system according to a second embodiment of the present invention, and schematically shows an intra-root canal electrode and a counter electrode placed on a subject. [Figure 8] This diagram schematically shows an example of the change in current value over time when treating the root apex and lateral branches. [Figure 9] This figure schematically shows a pulse therapy system according to a third embodiment of the present invention, and is a schematic cross-sectional view showing an intra-root canal electrode. [Figure 10] FIG. 2 schematically shows a pulse therapy system according to a fourth embodiment of the present invention, and schematically shows a female electrode and a counter electrode disposed on a subject. MODE FOR CARRYING OUT THE INVENTION

[0013] Embodiments of the present invention will be described in detail with reference to the drawings. In the following description, the same elements are denoted by the same reference numerals, and redundant descriptions are omitted. Expressions indicating directions in the drawings show the correspondence of each drawing.

[0014] <First Embodiment> As shown in FIG. 1, a pulse therapy system 1A according to a first embodiment of the present invention is a root canal therapy system for treating a root canal 2a of a tooth 2 as a test tooth of a subject and a branch 2b extending from the root canal 2a to the periodontal ligament cavity 3. The pulse therapy system 1A uses a pulsed current to treat the apex 2a1 which is the tip (bottom) of the root canal 2a or the branch 2b.

[0015] The pulse therapy system 1A includes a pulse therapy device 10, a transmission unit 20, an intra-root canal electrode 30A, a counter electrode 40, and a stopper 50.

[0016] <Pulse Therapy Device> The pulse therapy device 10 includes a DC power supply unit 11, a pulsed current generation unit 12, a power current monitoring unit 14, a control unit 15, a first operation unit 16, and a second operation unit 17.

[0017] <<DC Power Supply Unit>> The DC power supply unit 11 is a constant voltage power supply that controls the output voltage to be constant, and is a power supply circuit that generates a DC current (power current) for generating a pulsed current. The generated DC current is supplied to the pulsed current generation unit 12.

[0018] <<Pulse Current Generation Unit>> The pulse current generation unit 12 is a circuit that generates pulse current (in this embodiment, a high-frequency current with a frequency of 200 kHz to 5 MHz) from the DC current supplied from the DC power supply unit 11. The pulse current generation unit 12 comprises a pulse switch circuit 12a, an output transformer 12b, a capacitor 12c, and a waveform generation unit 13.

[0019] The pulse switch circuit 12a is electrically connected to the DC power supply unit 11. Based on the waveform generated by the waveform generation unit 13, the pulse switch circuit 12a converts the DC current from the DC power supply unit 11 into a pulse current. The converted pulse current is transmitted to the output transformer 12b.

[0020] The output transformer 12b impedance-converts the pulse current generated by the pulse switch circuit 12a using the load impedance of the output transformer 12b, and transmits the converted pulse current to the capacitor 12c. The output characteristics of the capacitor 12c are specific to the device, and are set so that the power of the pulse current supplied to the root canal electrode 30A and the counter electrode 40 is maximized when these output characteristics are matched with the load impedance of the living body (which varies depending on the part of the body and takes values ​​in the range of 100Ω to 2kΩ).

[0021] Capacitor 12c cuts the low-frequency components of the pulse current generated by the pulse switch circuit 12a and determines the output impedance of capacitor 12c (the power supplied to and consumed by the root canal electrode 30A and the counter electrode 40 is maximized when the output impedance matches the impedance of capacitor 12c). The pulse current from which the low-frequency components have been cut is supplied to the root canal electrode 30A and the counter electrode 40.

[0022] ≪Waveform generation section≫ The waveform generation unit 13 is a circuit that generates a waveform for pulse current based on a control signal from the control unit 15. The generated waveform is transmitted to the pulse switch circuit 12a. The waveform generation unit 13 is configured to selectively generate either a continuous wave or an intermittent wave. The waveform generation unit 13 comprises a continuous wave generation unit 13a, an intermittent wave generation unit 13b, a first switch 13c, and a second switch 13d.

[0023] The continuous wave generation unit 13a generates a continuous wave based on the control signal from the control unit 15 (see Figure 3(a)).

[0024] The intermittent wave generation unit 13b generates intermittent waves based on control signals from the control unit 15 (see Figure 3(b)).

[0025] The first switch 13c is interposed between the continuous wave generation unit 13a and the intermittent wave generation unit 13b and the second switch 13d. The first switch 13c is configured to switch between the following two states based on a control signal from the control unit 15. Continuous wave transmission state: A state in which the continuous wave generation unit 13a and the second switch 13d are connected, while the intermittent wave generation unit 13b and the second switch 13d are disconnected. Intermittent wave transmission state: A state in which the connection between the continuous wave generation unit 13a and the second switch 13d is disconnected, while the connection between the intermittent wave generation unit 13b and the second switch 13d is connected.

[0026] The second switch 13d is interposed between the first switch 13c and the pulse switch circuit 12a. The second switch 13d is configured to switch between the following two states based on a control signal from the control unit 15. Connection status: The first switch 13c and the pulse switch circuit 12a are connected. Disconnected state: A state in which the connection between the first switch 13c and the pulse switch circuit 12a is disconnected.

[0027] ≪Power supply current monitoring section≫ The power supply current monitoring unit 14 is interposed in a closed circuit connecting the pulse switch circuit 12a of the DC power supply unit 11 and the pulse current generation unit 12, and monitors the current value of the DC current (power supply current) supplied by the DC power supply unit 11. The monitored current value is output to the control unit 15. The power supply current monitoring unit 14 comprises a resistor 14a and an operational amplifier 14b.

[0028] The resistor 14a is interposed between the DC power supply unit 11 and the pulse switch circuit 12a.

[0029] The operational amplifier 14b is connected in parallel with the resistor 14a and detects the current value flowing through the resistor 14a. The detected current value is output to the control unit 15.

[0030] <Department Head> The control unit 15 is composed of a CPU (Central Processing Unit), ROM (Read-Only Memory), RAM (Random Access Memory), input / output circuits, etc., and changes the output of the pulse current by controlling the waveform generation unit 13 based on the operation result of the first operation unit 16, the operation result of the second operation unit 17, and the monitoring result (current value) of the power supply current monitoring unit 14.

[0031] ≪First Operating Section≫ The first operating unit 16 is composed of a keyboard, mouse, touch panel, dial, etc. The results of operations performed on the first operating unit 16 are output to the control unit 15.

[0032] ≪Second Control Panel≫ The second operating unit 17 is composed of a foot pedal or the like. The operation result of the second operating unit 17 is output to the control unit 15. The foot pedal serving as the second operating unit 17 may be one provided in a dental treatment unit.

[0033] <Communication Department> The transmission unit 20 transmits the pulsed current supplied from the pulsed treatment device 10 to the root canal electrode 30A and the counter electrode 40. In this embodiment, the transmission unit 20 is a wire that carries power as pulsed current and constitutes a series circuit that supplies power from the pulsed treatment device 10 to the root canal electrode 30A and the counter electrode 40.

[0034] ≪Intra-root canal electrode≫ As shown in Figure 2, the intra-root canal electrode 30A is placed inside the root canal 2a of the tooth 2, which is the affected area. The intra-root canal electrode 30A comprises an electrode body 31, an insulating part 32, and a gripping part 33.

[0035] The electrode body 31 is a long, slender, roughly rod-shaped electrode that is inserted into the root canal 2a of the subject's tooth 2 so as to be electrically conductive to the inner surface of the root canal 2a (for example, in contact with the pulp of the root canal 2a, or, if pulpectomy has been performed, in contact with the inner surface other than the pulp). The electrode body 31 is made of a conductive material (for example, a conductive metal such as stainless steel, nickel-titanium, or tungsten). The electrode body 31 has a tip diameter of 0.1 mm to 2 mm and possesses flexibility to accommodate curved root canals 2a.

[0036] The tip of the electrode body 31 may be conical or hemispherical in shape. Such a structure can improve access to the root canal 2a.

[0037] The insulating portion 32 covers and insulates the electrode body 31 while exposing a portion of its axial direction (in this embodiment, the tip). That is, in the root canal electrode 30A, the portion of the electrode body 31 exposed from the insulating portion 32 is the conductive region X1 that can conduct electricity to the affected area of ​​the subject, and the portion of the electrode body 31 covered by the insulating portion 32 is the insulated region X2 that cannot conduct electricity to the affected area of ​​the subject. Setting the conductive region X1 in this way enables concentrated current flow to the root apex 2a1, allowing for optimal treatment of the root apex 2a1. In this embodiment, the insulating portion 32 is formed by a coating using an insulating material. Alternatively, the insulating portion 32 may be a cover formed by an insulating material, as in the insulating portion 34 of the third embodiment described later.

[0038] The gripping portion 33 is attached to the base end of the electrode body 31 and is the part that is grasped by the operator (dentist, dental hygienist, dental assistant, etc.). The gripping portion 33 is made of an insulating material.

[0039] <Counter electrode> The counter electrode 40 is a rod-shaped or plate-shaped electrode that is electrically conductive (for example, in contact with the body) attached to the subject's body (e.g., gums 4). The counter electrode 40 is made of a conductive material (for example, a conductive metal such as stainless steel, nickel-titanium, or tungsten). The counter electrode 40 may be a counter electrode plate attached to the gums 4, an electrical connection terminal such as a mouth clip that is hooked onto the gums 4, an alligator clip attached to the subject's body, an electrode held by the subject, or a conductive metal saliva ejector placed at the corner of the mouth. In other words, the shape of the counter electrode 40 is not limited to a plate shape, but may be rod-shaped, spherical, etc. Furthermore, the mounting position of the counter electrode 40 is not limited to the gums 4, which are the inner surface of the oral cavity, but may be any part of the subject's body such as the lips, inner surface of the oral cavity, hand, or skin. In addition, the counter electrode 40 may also be grounded to a seat (examination table) on which the subject sits.

[0040] Here, the root canal electrode 30A and the counter electrode 40 are configured to be detachable (replaceable) from the transmission unit 20. Alternatively, the transmission unit 20 is configured to be detachable (replaceable) from the pulse treatment device 10.

[0041] <Stopper> The stopper 50 is a plate-shaped member positioned at the occlusal end of the tooth 2 (the tip of the occlusal surface; the lower end of an upper tooth, the upper end of a lower tooth) and fixes the intracanal electrode 30A, which is inserted into the root canal 2a, to a desired insertion depth. The stopper 50 is made of, for example, rubber material. The intracanal electrode 30A is press-fitted into the hole in the stopper 50 so that it can move (slide) in the axial direction of the intracanal electrode 30A.

[0042] The stopper 50, by contacting the occlusal end of tooth 2, becomes the reference position for measuring the root canal length, which is the length of the root canal 2a. That is, the operator places the stopper 50 against the occlusal end of tooth 2 when the apical position detection unit 16a detects that the tip of the intracanal electrode 30A is located at the root apex 2a1. Subsequently, the operator removes the intracanal electrode 30A and stopper 50 in this state from the subject's oral cavity and measures the distance from the stopper 50 to the tip of the intracanal electrode 30A to measure the root canal length. The operator can also measure the position of the lateral canal 2b (the distance from the occlusal end of tooth 2 to the connection point of the lateral canal 2b) using the same method.

[0043] <Example of operation> Next, an example of operation of the pulse therapy system 1A according to the first embodiment of the present invention will be described. In the following example of operation, the power supply current monitoring unit 14 is supplied with a predetermined required voltage (i.e., a constant voltage) from the DC power supply unit 11.

[0044] The control unit 15 controls the pulse current generation unit 12 to generate a pulse current when the second operation unit 17 is operated, and to stop the pulse current when the operation of the second operation unit 17 is stopped. Alternatively, the control unit 15 may be configured to continue generating a pulse current for a predetermined period T5 (see Figure 3(c)) after the second operation unit 17 has been operated once.

[0045] When a pulsed current is applied to the affected area of ​​the subject (dental treatment site, in this embodiment, the root apex 2a1 and / or lateral branch 2b within the root canal 2a), the current value monitored by the power supply current monitoring unit 14 rises in the initial stage of application when the impedance of the affected area is low, due to the large amount of power consumed between the electrode (in this embodiment, the intra-root canal electrode 30A) and the counter electrode 40. Subsequently, the current value monitored by the power supply current monitoring unit 14 decreases as the tissue carbonizes and the impedance increases. Based on this decrease in current value (based on the decrease in power supplied to the subject), the control unit 15 terminates or modifies the treatment.

[0046] The control unit 15 calculates an initial value of the current value monitored by the power supply current monitoring unit 14 at the start of pulse current output (for example, the average value for 0.1 seconds from the start of output), and sets a predetermined percentage of this initial value (for example, 1 / 2) as the predetermined value of the current value described later. Alternatively, the control unit 15 may be configured to calculate the peak value of the current value monitored by the power supply current monitoring unit 14, and set a predetermined percentage of this peak value (for example, 70%) as the predetermined value of the current value described later. Here, the control unit 15 sets the predetermined percentage based on the results of the operator's prior operation of the first operation unit 16.

[0047] Such examples of operation are applicable to the pulse therapy system 1B (see Figure 7) and the pulse therapy system 1C (see Figure 9) according to the second embodiment, which will be described later. Furthermore, such examples of operation are also applicable to the pulse therapy system 1D (see Figure 10) according to the fourth embodiment, which will be described later. In this case, a scalpel electrode 30D is used as the electrode, and soft tissue (gingiva 4) is treated as the affected area.

[0048] <Control example: Continuous wave cutoff> The control unit 15 sets the first switch 13c to a continuous wave transmission state and the second switch 13d to a connected state, causing the continuous wave generation unit 13a to generate a continuous wave. In this state, the pulse current (see Figure 3(a)) as a continuous wave generated by the pulse switch circuit 12a is applied to the root canal electrode 30A and the counter electrode 40 via the output transformer 12b, capacitor 12c, and transmission unit 20.

[0049] The pulse treatment system 1A treats the inside of the root canal 2a by applying such pulsed current (incision, sterilization, etc., mainly sterilization in this embodiment). As the treatment inside the root canal 2a progresses and the tissue carbonizes, the power supplied to the subject is limited, and the value of the power supplied to the pulse switch circuit 12a decreases.

[0050] When the current value monitored by the power supply current monitoring unit 14 falls below a predetermined value, the control unit 15 switches the second switch 13d from the connected state to the disconnected state. This allows the pulse therapy system 1A to terminate the treatment appropriately.

[0051] Such examples of operation are applicable to the pulse therapy system 1B (see Figure 7) and the pulse therapy system 1C (see Figure 9) according to the second embodiment, which will be described later. Furthermore, such examples of operation are also applicable to the pulse therapy system 1D (see Figure 10) according to the fourth embodiment, which will be described later. In this case, a scalpel electrode 30D is used as the electrode, and soft tissue (gingiva 4) is treated as the affected area.

[0052] <Control example: Continuous wave output reduction> Furthermore, the control unit 15 can also switch the first switch 13c from a continuous wave transmission state to an intermittent wave transmission state when the current value monitored by the power supply current monitoring unit 14 falls below a predetermined value. In this state, the pulse current (see Figure 3(b)) as a continuous wave generated by the pulse switch circuit 12a is applied to the electrode (in this embodiment, the root canal electrode 30A) and the counter electrode 40 via the output transformer 12b, capacitor 12c, and transmission unit 20. As a result, the pulse treatment system 1A can suitably protect the tissue of the affected area (in this embodiment, inside the root canal 2a) (e.g., by reducing temperature rise).

[0053] The operator stops operating the second control unit 17 while visually inspecting the affected area to confirm the optimal condition. As a result, the control unit 15 switches the second switch 13d from the connected state to the disconnected state.

[0054] Such examples of operation are applicable to the pulse therapy system 1B (see Figure 7) and the pulse therapy system 1C (see Figure 9) according to the second embodiment, which will be described later. Furthermore, such examples of operation are also applicable to the pulse therapy system 1D (see Figure 10) according to the fourth embodiment, which will be described later. In this case, a scalpel electrode 30D is used as the electrode, and soft tissue (gingiva 4) is treated as the affected area.

[0055] <Control example: Intermittent wave blocking> The control unit 15 sets the first switch 13c to the intermittent wave transmission state and the second switch 13d to the connected state, causing the intermittent wave generation unit 13b to generate an intermittent wave. In this state, the pulse current (see Figure 3(b)) as an intermittent wave generated by the pulse switch circuit 12a is applied to the electrode (in this embodiment, the root canal electrode 30A) and the counter electrode 40 via the output transformer 12b, capacitor 12c, and transmission unit 20.

[0056] The pulse therapy system 1A treats the affected area (in this embodiment, the inside of the root canal 2a) by applying such pulsed current (hemostasis, coagulation, prevention of temperature rise, etc.). As the treatment progresses and the tissue of the affected area carbonizes, the power supplied to the subject is limited, and the power value supplied to the pulse switch circuit 12a decreases.

[0057] When the current value monitored by the power supply current monitoring unit 14 falls below a predetermined value, the control unit 15 switches the second switch 13d from the connected state to the disconnected state. This allows the pulse therapy system 1A to terminate the treatment appropriately.

[0058] Such examples of operation are applicable to the pulse therapy system 1B (see Figure 7) and the pulse therapy system 1C (see Figure 9) according to the second embodiment, which will be described later. Furthermore, such examples of operation are also applicable to the pulse therapy system 1D (see Figure 10) according to the fourth embodiment, which will be described later. In this case, a scalpel electrode 30D is used as the electrode, and soft tissue (gingiva 4) is treated as the affected area.

[0059] <Control Example: Reducing Output of Intermittent Waves, Part 1> Furthermore, the control unit 15 can also reduce the duty cycle (T1 / (T1+T2)) of the intermittent wave generated by the intermittent wave generation unit 13b when the current value monitored by the power supply current monitoring unit 14 falls below a predetermined value. Here, the duty cycle is determined by the on period T1 and the off period T2 within the pulse width (period T3). In this state, a pulse current (see Figure 3(b)) as an intermittent wave with a small duty cycle generated by the pulse switch circuit 12a is applied to the electrode (in this embodiment, the root canal electrode 30A) and the counter electrode 40 via the output transformer 12b, capacitor 12c, and transmission unit 20. As a result, the pulse treatment system 1A can suitably protect the tissue of the affected area (in this embodiment, inside the root canal 2a) (e.g., by reducing temperature rise).

[0060] The operator stops operating the second control unit 17 while visually inspecting the affected area to confirm the optimal condition. As a result, the control unit 15 switches the second switch 13d from the connected state to the disconnected state.

[0061] Such examples of operation are applicable to the pulse therapy system 1B (see Figure 7) and the pulse therapy system 1C (see Figure 9) according to the second embodiment, which will be described later. Furthermore, such examples of operation are also applicable to the pulse therapy system 1D (see Figure 10) according to the fourth embodiment, which will be described later. In this case, a scalpel electrode 30D is used as the electrode, and soft tissue (gingiva 4) is treated as the treatment site.

[0062] <Control Example: Reducing Output of Intermittent Waves, Part 2> Furthermore, when the current value monitored by the power supply current monitoring unit 14 falls below a predetermined value, the control unit 15 can also set a pause period T4 between adjacent sets of pulse widths for each of the multiple pulse widths (period T3) of the intermittent wave generated by the intermittent wave generation unit 13b. In this state, the pulse current (see Figure 4) as an intermittent wave with a pause period T4 generated by the pulse switch circuit 12a is applied to the electrode (in this embodiment, the root canal electrode 30A) and the counter electrode 40 via the output transformer 12b, capacitor 12c, and transmission unit 20. As a result, the pulse treatment system 1A can suitably protect the tissue of the affected area (in this embodiment, inside the root canal 2a) (e.g., by reducing temperature rise).

[0063] The operator stops operating the second control unit 17 while visually inspecting the affected area to confirm the optimal condition. As a result, the control unit 15 switches the second switch 13d from the connected state to the disconnected state.

[0064] The control unit 15 can set a pause period T4 based on the results of the operator's prior operation of the first operating unit 16. It is desirable that the pause period T4 be longer than, for example, the duty cycle off period T2.

[0065] Such examples of operation are applicable to the pulse therapy system 1B (see Figure 7) and the pulse therapy system 1C (see Figure 9) according to the second embodiment, which will be described later. Furthermore, such examples of operation are also applicable to the pulse therapy system 1D (see Figure 10) according to the fourth embodiment, which will be described later. In this case, a scalpel electrode 30D is used as the electrode, and soft tissue (gingiva 4) is treated as the affected area.

[0066] <Control example: Stopping pulse current output> Furthermore, the control unit 15 switches the second switch 13d from the connected state to the disconnected state if the current value monitored by the power supply current monitoring unit 14 remains above a predetermined value for a predetermined period T5 (see Figure 3(c)). This allows the pulse treatment system 1A to effectively protect the tissue in the affected area (in this embodiment, inside the root canal 2a).

[0067] The control unit 15 can set a predetermined period T5 based on the results of the operator's prior operation of the first operating unit 16. The predetermined period T5 can be set to, for example, the same period as multiple pulse widths (period T3), or a longer period. The operator can resume treatment using pulsed current by operating the second operating unit 17 again.

[0068] Such examples of operation are applicable to the pulse therapy system 1B (see Figure 7) and the pulse therapy system 1C (see Figure 9) according to the second embodiment, which will be described later. Furthermore, such examples of operation are also applicable to the pulse therapy system 1D (see Figure 10) according to the fourth embodiment, which will be described later. In this case, a scalpel electrode 30D is used as the electrode, and soft tissue (gingiva 4) is treated as the affected area.

[0069] <Control example: Reducing pulse current output> Furthermore, the control unit 15 can reduce the amplitude of the continuous wave generated by the continuous wave generation unit 13a or the intermittent wave generated by the intermittent wave generation unit 13b when the current value monitored by the power supply current monitoring unit 14 falls below a predetermined value. Here, the smaller the amplitude (current value or voltage value) of the high-frequency signal (see Figure 5(a)), the smaller the surface charring Y1 and lateral thermal denaturation Y2 of the affected area, which are the treatment state (see Figure 5(b)). As a result, the pulse treatment system 1A can suitably protect the tissue of the affected area (in this embodiment, inside the root canal 2a) (reduction of hemostatic effect, reduction of coagulation and hardening, etc.).

[0070] The operator stops operating the second control unit 17 while visually inspecting the affected area to confirm the optimal condition. As a result, the control unit 15 switches the second switch 13d from the connected state to the disconnected state.

[0071] The control unit 15 can set the amplitude reduction ratio based on the results of the operator's prior operation of the first operating unit 16.

[0072] Such examples of operation are applicable to the pulse therapy system 1B (see Figure 7) and the pulse therapy system 1C (see Figure 9) according to the second embodiment, which will be described later. Furthermore, such examples of operation are also applicable to the pulse therapy system 1D (see Figure 10) according to the fourth embodiment, which will be described later. In this case, a scalpel electrode 30D is used as the electrode, and soft tissue (gingiva 4) is treated as the treatment site.

[0073] <Example of operation: Extending pulse current output> Furthermore, the control unit 15 sets a set power W corresponding to a preset set period T, and the supplied power W supplied to the root canal electrode 30A and the counter electrode 40 during the set period T. S The following is compared. Here, the set period T is the power W supplied to the root canal electrode 30A and the counter electrode 40. S This is the time during which power is supplied, for example, periods T3 and T5. The control unit 15 also monitors the voltage (constant voltage) of the DC power supply unit 11, the current value monitored by the power supply current monitoring unit 14, and the supplied power W. SBased on the supplied time, the power supply amount supplied to the root canal electrode 30A and the counter electrode 40 can be calculated.

[0074] Normally, the pulse current generation unit 12 supplies the set power W to the root canal electrode 30A and the counter electrode 40 during the set period T (see line L1 in FIG. 6). On the other hand, when the current value of the direct current generated by the direct current power supply unit 11 is relatively small, the supply power W supplied to the root canal electrode 30A and the counter electrode 40 by the pulse current generation unit 12 during the set period T S becomes smaller than the set power W (see line L2 in FIG. 6).

[0075] Thus, when the supply power W supplied during the set period T S is smaller than the set power W, the control unit 15 can increase the output time of the pulse current as the current value becomes smaller by controlling the pulse current generation unit 12. Here, the control unit 15 presets the set period T and the set power W based on the previous operation result of the first operation unit 16 (for example, a dial) by the operator.

[0076] The control unit 15 is the supply power W supplied during the set period T S When it is smaller than the set power W, the supplied supply power W S and based on the set power W, calculates the extension period ΔT of the pulse current output. ΔT=(W - W S )T / W S The control unit 15 controls the pulse current generation unit 12 to output a pulse current for a period obtained by adding the extension period ΔT to the set period T, so that the supply power W is supplied to the root canal electrode 30A and the counter electrode 40 SThe system supplies a predetermined amount of energy (the product of the set power W and the set period T) to the affected area, thereby enabling suitable treatment. The set period T may be set in advance before supplying power to the root canal electrode 30A and the counter electrode 40, or it may be set to correspond to the actual power supply period to the supply root canal electrode 30A and the counter electrode 40, i.e., the period of operation by the operator for power supply.

[0077] ≪Example of operation: When the set power and set period are set in advance≫ The control unit 15 sets the set power W and set period T based on the operator's prior operation of the first control unit 16 (e.g., dial). In this example, the operator operates the second control unit 17 once (presses the foot pedal once). Based on this operation, the control unit 15 supplies the set power W to the root canal electrode 30A and the counter electrode 40 for the supply period T. The control unit 15 sets the actual supplied power W S If the power is less than the set power W, the extension period ΔT is calculated, and the power supply period is extended by the amount of the extension period ΔT.

[0078] ≪Example of operation: When the set power is pre-configured≫ The control unit 15 sets the set power W based on the operator's prior operation of the first control unit 16 (e.g., a dial). In this example, the operator continues to operate the second control unit 17 (continues to press the foot pedal). Based on this operation, the control unit 15 supplies the set power W to the root canal electrode 30A and the counter electrode 40 while the second control unit 17 is being operated. When the operator finishes operating the second control unit 17, the control unit 15 sets the power supply period, i.e., the operating period of the second control unit 17, as the set period T. The control unit 15 then sets the actual supplied power W S If the power is less than the set power W, the extension period ΔT is calculated, and the power supply period is extended by the amount of the extension period ΔT.

[0079] In this embodiment, when the DC power supply unit 11 is a constant voltage power supply, the control unit 15 sets the set power W and the supplied power W.S Instead of comparing the power W with the current value, the set current value, which is the set power W divided by a constant voltage, can be compared with the current value monitored by the power supply current monitoring unit 14. That is, if the current value monitored by the power supply current monitoring unit 14 is smaller than the preset set current value, the control unit 15 controls the pulse current generation unit 12 so that the output time of the pulse current can be increased as the current value decreases. Here, the control unit 15 sets the set current value based on the results of prior operation of the first operation unit 16 (for example, a dial) by the operator. In this way, the pulse therapy system 1A can monitor the load on the subject (fluctuation in the current value) and compensate for the decrease in power by extending the output time of the pulse current in accordance with the decrease in the current value (decrease in power consumed at the affected area due to an increase in the load resistance of the living body).

[0080] Furthermore, the control unit 15 may be configured to control the pulse current generation unit 12 so as to stop outputting the pulse current when the amount of power supplied to the root canal electrode 30A and the counter electrode 40 within the set period T reaches the amount of power which is the product of the set power W and the set period T.

[0081] Such examples of operation are applicable to the pulse therapy system 1B (see Figure 7) and the pulse therapy system 1C (see Figure 9) according to the second embodiment, which will be described later. Furthermore, such examples of operation are also applicable to the pulse therapy system 1D (see Figure 10) according to the fourth embodiment, which will be described later. In this case, a scalpel electrode 30D is used as the electrode, and soft tissue (gingiva 4) is treated as the affected area.

[0082] <Example of operation: Pulse therapy (root canal treatment)> This example of operation describes the treatment of the root apex 2a1 using an intra-root canal electrode 30A, which is located at the tip of the electrode body 31, with an energized area X1. The operator operates the second control unit 17 to start pulse treatment. The control unit 15 sets the first switch 13c to a continuous wave transmission state and the second switch 13d to a connected state. In this state, the control unit 15 causes the continuous wave generation unit 13a to generate a continuous wave. The generated continuous wave is input to the pulse switch circuit 12a via the first switch 13c and the second switch 13d. The pulse switch circuit 12a generates a pulse current from a DC current by repeatedly switching ON and OFF based on the input continuous wave. The generated pulse current is applied to the intra-root canal electrode 30A and the counter electrode 40 via the output transformer 12b, capacitor 12c, and transmission unit 20. The pulse treatment system 1A treats the root apex 2a by applying a pulse current as a continuous wave to the intra-root canal electrode 30A and the counter electrode 40.

[0083] Here, the control unit 15 detects a decrease in the peak value of the current monitored by the power supply current monitoring unit 14. The first decrease in the peak value of the current indicates that treatment of the root apex 2a1 has been completed.

[0084] When the control unit 15 detects the first decrease in the peak value of the current (for example, when the current value falls below a predetermined percentage of the peak value (for example, 70%)), it switches the second switch 13d from the connected state to the disconnected state. This allows the pulse treatment system 1A to suitably terminate the treatment of the root apex 2a1.

[0085] A pulse therapy system 1A according to the first embodiment of the present invention comprises an electrode (intra-root canal electrode 30A) placed on the affected area of ​​a subject, a counter electrode 40 placed on the subject's body, a pulse current generation unit 12 that generates a pulse current from a current from a power supply unit (DC power supply unit 11) and supplies it to the electrode and the counter electrode 40, a power supply current monitoring unit 14 that monitors the current value of the current supplied to the pulse current generation unit 12, and a control unit 15 that changes the output of the pulse current by controlling the pulse current generation unit 12 based on the current value. Therefore, the pulse therapy system 1A can quickly monitor changes in the pulse power supply value (changes in impedance) flowing to the subject by monitoring the power supply current, preventing delays before control begins and enabling rapid control of the pulse current output. Furthermore, since the pulse therapy system 1A does not require a rectifier circuit or the like between the power supply current monitoring unit 14 and the control unit 15, it can achieve cost reduction.

[0086] In the pulse therapy system 1A, the pulse current generation unit 12 is configured to generate continuous waves and intermittent waves as pulse currents. Therefore, the pulse therapy system 1A can suitably perform treatments such as incision and sterilization using continuous waves, and hemostasis, coagulation, temperature rise prevention, and sterilization using intermittent waves.

[0087] In the pulsed treatment system 1A, the electrode is an intra-root canal electrode 30A that is placed inside the root canal 2a of the tooth 2, which is the affected area. Therefore, the pulse treatment system 1A can effectively treat the inside of the root canal 2a.

[0088] In the root canal electrode 30A of the pulse treatment system 1A, a portion in the axial direction is a current-carrying region X1, and the other portion in the axial direction is an insulating region X2. Therefore, the pulsed treatment system 1A can suitably treat a desired area within the root canal 2a.

[0089] In the pulse therapy system 1A, the control unit 15 stops or reduces the output of the pulse current when the current value is less than or equal to a predetermined value. Therefore, the pulse treatment system 1A can suitably terminate or alleviate treatment of the affected area (in this embodiment, within the root canal 2a).

[0090] In the pulse therapy system 1A, the control unit 15 reduces the output of the pulse current by switching the pulse current from a continuous wave to an intermittent wave when the current value is less than or equal to the predetermined value. Therefore, the pulse treatment system 1A can effectively reduce the treatment of the affected area (in this embodiment, inside the root canal 2a).

[0091] In the pulse therapy system 1A, the control unit 15 reduces the output of the pulse current by reducing the duty cycle of the intermittent pulse current or by setting a pause period T4 for each of the multiple pulse widths of the intermittent pulse current when the current value is less than or equal to the predetermined value. Therefore, the pulse treatment system 1A can effectively reduce the treatment of the affected area (in this embodiment, inside the root canal 2a).

[0092] In the pulse therapy system 1A, the control unit 15 reduces the amplitude of the pulse current when the current value is less than or equal to the predetermined value. Therefore, the pulse treatment system 1A can effectively reduce the treatment of the affected area (in this embodiment, inside the root canal 2a).

[0093] In the pulse therapy system 1A, the control unit 15 stops outputting the pulse current if the current value remains above a predetermined value for a predetermined period T5. Therefore, the pulse therapy system 1A can prevent excessive continuous application of pulsed current.

[0094] In the pulse treatment system 1A, the current-carrying region X1 is provided at the tip or middle portion in the axial direction of the root canal electrode 30A, and the control unit 15 stops outputting the pulse current when it detects the first decrease in the peak value of the current. Therefore, the pulse therapy system 1A can suitably treat the affected area (for example, one of the root apex 2a1 and the lateral branch 2b) according to the position of the energized area X1.

[0095] The power supply unit is a constant voltage power supply, and the control unit 15 controls the pulse current generation unit 12 such that the output time of the pulse current increases as the current value decreases when the current value is smaller than the set current value. Therefore, the pulse therapy system 1A can suppress the reduction in the amount of power supplied to the affected area and achieve optimal treatment.

[0096] <Second Embodiment> Next, the pulse therapy system according to the second embodiment of the present invention will be described, focusing on the differences from the pulse therapy system 1A according to the first embodiment. As shown in Figure 7, the pulse therapy system 1B according to the second embodiment of the present invention is equipped with an intracanal electrode 30B instead of intracanal electrode 30A.

[0097] <Intra-root canal electrode> In the intra-root canal electrode 30B, the insulating portion 32 covers and insulates the other axial portions (including the tip) of the electrode body 31, leaving the axial middle portion exposed. That is, in the intra-root canal electrode 30B, the current-carrying region X1 is provided at a position corresponding to the lateral canal 2b. For example, the current-carrying region X1 can be set with a width of approximately 3 mm in the axial direction, starting 2 mm to 3 mm away from the tip of the electrode body 31. Setting the current-carrying region X1 in this way enables concentrated current flow to the lateral canal 2b, allowing for optimal treatment of the lateral canal 2b. Furthermore, setting the insulating region X2 reduces current flow to the root apex 2a1, enabling protection of the root apex 2a1.

[0098] <Example of operation> Next, we will explain an example of operation of the pulse therapy system 1B according to the second embodiment of the present invention, focusing on the differences from the example of operation of the pulse therapy system 1A according to the first embodiment.

[0099] <Example of operation: Pulse therapy (lateral branch therapy)> This example of operation describes the treatment of a lateral canal 2b using an intracanal electrode 30B, in which the energizing region X1 is located in the axial middle part of the electrode body 31. The operator operates the second control unit 17 to start pulse treatment. The control unit 15 sets the first switch 13c to the continuous wave transmission state and the second switch 13d to the connected state. In this state, the control unit 15 causes the continuous wave generation unit 13a to generate a continuous wave. The generated continuous wave is input to the pulse switch circuit 12a via the first switch 13c and the second switch 13d. The pulse switch circuit 12a generates a pulse current from a DC current by repeatedly switching ON / OFF based on the input continuous wave. The generated pulse current is applied to the intracanal electrode 30A and the counter electrode 40 via the output transformer 12b, capacitor 12c, and transmission unit 20. The pulsed treatment system 1A treats the lateral canal 2b while protecting the root apex 2a1 by applying a pulsed current as a continuous wave to the intracanal electrode 30A and the counter electrode 40.

[0100] Here, the control unit 15 detects a decrease in the peak value of the current monitored by the power supply current monitoring unit 14. The first decrease in the peak value of the current indicates that treatment of the side branch 2b has been completed.

[0101] When the control unit 15 detects the first decrease in the peak value of the current value, ( If a decrease in the current value is detected due to degeneration of the tissue of the lateral branch 2b, the second switch 13d is switched from the connected state to the disconnected state. This allows the pulse therapy system 1A to suitably terminate the treatment of the lateral branch 2b.

[0102] Such an example of operation is described later in the pulse therapy system 1C according to the third embodiment. Figure 9Applicable to (see reference).

[0103] <Example of operation: Pulse therapy (treatment of lateral branches and periapical roots)> This example of operation describes the treatment of the root apex 2a1 and lateral canal 2b using an intra-root canal electrode 30B provided at the tip of the electrode body 31 in the energized area X1. The operator operates the second control unit 17 to start pulse treatment (see time t0 in Figure 8). The control unit 15 sets the first switch 13c to the continuous wave transmission state and the second switch 13d to the connected state. In this state, the control unit 15 causes the continuous wave generation unit 13a to generate a continuous wave. The generated continuous wave is input to the pulse switch circuit 12a via the first switch 13c and the second switch 13d. The pulse switch circuit 12a generates a pulse current from a DC current by repeatedly switching ON / OFF based on the input continuous wave. The generated pulse current is applied to the intra-root canal electrode 30A and the counter electrode 40 via the output transformer 12b, capacitor 12c, and transmission unit 20. The pulsed treatment system 1A treats the root apex 2a and lateral branches 2b by applying a pulsed current as a continuous wave to the intra-root electrode 30A and the counter electrode 40.

[0104] Here, the control unit 15 detects a decrease in the peak value of the current value monitored by the power supply current monitoring unit 14. The first decrease in the peak value of the current value ( Figure 8 The time t1 (see Figure 8) indicates that treatment of the lateral branch 2b, which is relatively close to the energized area X1, has been completed. After time t1, the pulsed current flows to the apex 2a1. Also, the second decrease in the peak value of the current (see Figure 8, time t2) indicates that treatment of the apex 2a1, which is relatively far from the energized area X1, has been completed.

[0105] When the control unit 15 detects a second decrease in the peak value of the current (i.e., when it detects that the current value has decreased due to degeneration of the tissue at the root apex 2a1), it switches the second switch 13d from the connected state to the disconnected state. This stops the application of pulsed current to the root apex 2a1 in an optimal state for root apical treatment, and the pulsed treatment system 1B can suitably complete the treatment of the root apex 2a1 and the lateral branches 2b.

[0106] The pulse waveform of the current value shown in Figure 8 is the case when the second switch 13d is kept connected even after the second decrease in the peak value of the current. The second decrease in the peak value of the current indicates that treatment of the apex 2a1, which is relatively far from the energized area X1, has been completed. If the second switch 13d is kept connected, no-load current will continue to flow after the second decrease in the peak value of the current. Therefore, it is desirable for the control unit 15 to switch the second switch 13 from the connected state to the disconnected state when it determines that treatment of the apex 2a1 and lateral branch 2b has been completed.

[0107] Such an example of operation is described later in the pulse therapy system 1C according to the third embodiment. Figure 9 Applicable to (see reference).

[0108] In the pulse treatment system 1B according to the second embodiment of the present invention, the energizing region X1 is provided in the intermediate part of the root canal electrode 30B in the axial direction, and the control unit 15 stops outputting the pulse current when it detects the second decrease in the peak value of the current value. Therefore, the pulsed treatment system 1B can suitably treat multiple affected areas within the root canal 2a (for example, both the apex 2a1 and the lateral branches 2b).

[0109] <Third Embodiment> Next, we will describe the pulse therapy system according to the third embodiment of the present invention, focusing on the differences from the pulse therapy system 1B according to the second embodiment. Figure 9As shown, the pulse treatment system 1C according to the third embodiment of the present invention is equipped with an intra-root canal electrode 30C instead of an intra-root canal electrode 30B.

[0110] <Intra-root canal electrode> The root canal electrode 30C is equipped with an insulating part 34 instead of an insulating part 32. The insulating part 34 is a cover made of an insulating material that covers the electrode body 31. An opening 34a is formed in the insulating part 34. This opening 34a realizes the current-carrying region X1.

[0111] <Fourth Embodiment> Next, the pulse therapy system according to the fourth embodiment of the present invention will be described, focusing on the differences from the pulse therapy system 1A according to the first embodiment. As shown in Figure 10, the pulse therapy system 1D according to the fourth embodiment of the present invention is equipped with a scalpel electrode 30D instead of the root canal electrode 30A and stopper 40.

[0112] <Electrode for scalpel> The scalpel electrode 30D is placed on the soft tissue (gingiva 4) in the oral cavity, which is the affected area, and is used for incision, coagulation, hemostasis, etc. of the soft tissue. The scalpel electrode 30D comprises an electrode body 31, an insulating part 32, and a gripping part 33.

[0113] The tip of the electrode body 31 may be bent to facilitate treatment. The shape of the tip of the electrode body 31 can be appropriately set to a shape that provides optimal tissue effect, such as a needle type, blade type, loop type, or ball type. When one point of the tip of the electrode body 31 contacts the tissue, the current density of the current flowing through the tissue becomes high. When the side of the tip of the electrode body 31 contacts the tissue, the current density of the current flowing through the tissue becomes low. Needle-type or blade-type electrode bodies 31 have thin tips (needle-shaped or knife-shaped) that can reduce the contact area with the tissue and are suitable for tissue incision. Loop-type electrode bodies 31 are suitable for tissue excision. Ball-type electrode bodies 31 can increase the contact area with the tissue and are suitable for tissue coagulation.

[0114] The insulating portion 32 covers and insulates the other axial portions of the electrode body 31 while leaving the axial tip portion exposed. That is, in the root canal electrode 30A, the portion of the electrode body 31 exposed from the insulating portion 32 is the conductive region X1 that can conduct electricity to the affected area of ​​the subject, and the portion of the electrode body 31 covered by the insulating portion 32 is the insulated region X2 that cannot conduct electricity to the affected area of ​​the subject. In this embodiment, the insulating portion 32 is formed by a coating using an insulating material.

[0115] The gripping portion 33 is attached to the base end of the electrode body 31 and is the part that is grasped by the operator (dentist, dental hygienist, dental assistant, etc.). The gripping portion 33 is pencil-shaped and made of insulating material.

[0116] In the pulse therapy system 1D according to the fourth embodiment of the present invention, the electrode is a scalpel electrode 30D that is placed on the gingiva 4, which is the affected area. Therefore, the pulse treatment system 1D can suitably treat the gingiva 4.

[0117] Although embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above and can be modified as appropriate without departing from the spirit of the invention. [Explanation of Symbols]

[0118] 1A, 1B, 1C, 1D Pulse Therapy System 2. Teeth (tooths to be examined) 2a Root canal 2a1 Apical 2b Side branch 4. Gums (soft tissue) 10. Pulse therapy device 11 DC power supply section (power supply section) 12. Pulse current generation unit 14 Power supply current monitoring section 15 Control Unit 30A,30B,30C Root canal electrode (electrode) 30D Scalpel Electrode (Electrode) 40 Counterelectrode 50 Stoppers X1 Current carrying area X2 Insulation Area

Claims

1. An intracanal electrode is placed inside the root canal of the subject's tooth, Counter electrodes placed on the subject's body, A pulse current generation unit that generates a pulse current from the current from the power supply unit and supplies it to the root canal electrode and the counter electrode, A power supply current monitoring unit monitors the current value supplied to the pulse current generation unit, A control unit that changes the output of the pulse current by controlling the pulse current generation unit based on the current value, Equipped with, In the aforementioned root canal electrode, The axial intermediate portion, as part of the axial direction, is the energized region. The other part in the axial direction is an insulating region. The pulse current generation unit is configured to generate continuous waves and intermittent waves as pulse currents. The control unit stops or reduces the output of the pulse current when the current value is less than or equal to a predetermined value. A pulse therapy system characterized by the following features.

2. The control unit reduces the output of the pulse current by switching the pulse current from a continuous wave to an intermittent wave when the current value is less than or equal to the predetermined value. The pulse therapy system according to feature 1.

3. The control unit reduces the output of the pulse current by reducing the duty cycle of the intermittent pulse current when the current value is less than or equal to the predetermined value, or by setting a pause period for each of the multiple pulse widths of the intermittent pulse current. The pulse therapy system according to feature 1.

4. The control unit reduces the amplitude of the pulse current when the current value is less than or equal to the predetermined value. The pulse therapy system according to feature 1.

5. An intracanal electrode is placed inside the root canal of the subject's tooth, Counter electrodes placed on the subject's body, A pulse current generation unit that generates a pulse current from the current from the power supply unit and supplies it to the root canal electrode and the counter electrode, A power supply current monitoring unit monitors the current value supplied to the pulse current generation unit, A control unit that changes the output of the pulse current by controlling the pulse current generation unit based on the current value, Equipped with, In the aforementioned root canal electrode, The axial intermediate portion, as part of the axial direction, is the energized region. The other part in the axial direction is an insulating region. The control unit stops outputting the pulse current when it detects the first decrease in the peak value of the current value. A pulse therapy system characterized by the following features.

6. An intracanal electrode is placed inside the root canal of the subject's tooth, Counter electrodes placed on the subject's body, A pulse current generation unit that generates a pulse current from the current from the power supply unit and supplies it to the root canal electrode and the counter electrode, A power supply current monitoring unit monitors the current value supplied to the pulse current generation unit, A control unit that changes the output of the pulse current by controlling the pulse current generation unit based on the current value, Equipped with, In the aforementioned root canal electrode, The axial intermediate portion, as part of the axial direction, is the energized region. The other part in the axial direction is an insulating region. The control unit stops outputting the pulse current when it detects a second decrease in the peak value of the current. A pulse therapy system characterized by the following features.

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