JP3142215B2 - Low frequency treatment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low-frequency therapeutic device for treating stiffness and pain by applying electrical stimulation to the human body.

[0002]

2. Description of the Related Art A low-frequency therapeutic device applies an electrode to the surface of a human body and contracts muscles by a current flowing when a pulse voltage is applied between the electrodes to obtain a therapeutic effect such as stiffness and pain. is there. At that time, generally, two electrodes paired with each other are used. FIG. 35 shows an example of the appearance and an electrode portion.

[0003] Recently, a low-frequency therapeutic device having a plurality of pairs of electrodes has appeared, and it has one low-frequency pulse output means, and determines to which electrode pair the low-frequency pulse output is distributed by the output distribution means. What is to be determined (Japanese Unexamined Patent Publication No. 3-976)
Japanese Patent Application Laid-Open No. Hei. -277383).

[0004] Among such low-frequency treatment devices, there are the following low-frequency treatment devices using a pair of electrodes. An electrode current detection circuit for detecting a current flowing between a pair of electrodes, and a notification for outputting a notification output when a current value detected by the electrode current detection circuit becomes a predetermined value or less. A circuit is provided to indicate that the state of attachment of the electrodes to the human body has deteriorated.

[0005] Further, there is the following as a low frequency treatment device having a plurality of pairs of electrodes. Japanese Patent Application Laid-Open No. 2-291873 A current flowing through a pair of conductors for generating an interference wave with respect to a human body is detected, and the value of a low-frequency voltage output from a plurality of oscillation units is controlled based on the detection result. Then, an equal current flows through the two pairs of conductors. In this way, the part of the human body that receives the stimulus does not deviate from the target part. Japanese Patent Application Laid-Open No. 1-249069 The amplitude or frequency correlated with human sensation is converted into a numerical value as a membership function, and a low-frequency pulse is output according to this function.

[0006]

Generally, when an electric stimulus is applied to a human body to treat stiffness or pain,
It is difficult for current to flow in areas of severe fatigue (strong stiffness) on the shoulders, hips, back, feet, etc., and current easily flows in areas of no fatigue or areas where fatigue has been removed (stiffness has disappeared). There is a tendency. For this reason, when a constant current is always supplied to a plurality of electrode pairs, an excessive current flows in spite of a less stiff part, and in spite of a very stiff part. Disadvantageously that current does not sufficiently flow. In other words, there is a problem that not only the original purpose of reducing stiffness and pain is achieved but also the discomfort is promoted by uneven stimulation current to the treatment site.

In the conventional low frequency treatment apparatus disclosed in Japanese Patent Application Laid-Open Nos. Hei 4-132566 and Hei 2-291873 described above, detection of the mounting state of the electrodes and localization control of the location where the interference wave is generated by the two pairs of electrodes. Therefore, the current flowing between the electrodes is detected. Further, in the conventional low frequency treatment device disclosed in Japanese Patent Application Laid-Open No. 1-249069, the amplitude of the applied voltage and the operation amount of the frequency are expressed as ambiguous values by a membership function. However, the current detection and the membership function in each of the above-described conventional low-frequency treatment devices are not related to controlling the current value supplied to the plurality of electrode pairs according to the degree of punishment or pain at the treatment site.

When the frequency of a low-frequency pulse applied to a certain part of the human body is changed to a constant pulse voltage, the current flowing between the electrodes at a certain frequency or higher depends on the frequency characteristics of the adhesive gel used for the electrodes. Increases exponentially. That is, the intensity of the electrical stimulation felt by the user also increases. This means that when a low-frequency pulse containing a mixture of a low-frequency waveform for “hitting” and a high-frequency waveform for “kneading” is applied between the electrodes, the “hitting” waveform and the “kneading” waveform This means that there is a difference in the strength of the electrical stimulus, which gives the user discomfort.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a low-frequency therapeutic device for controlling a current value to be supplied in accordance with a difference in the degree of stiffness of a mounting site. In addition, eliminating the frequency dependence of the current value flowing through the electrode pair, the "hitting" waveform and the "kneading"
It is an object of the present invention to provide a low-frequency treatment device which does not cause any discomfort even when the waveforms of the above are mixed.

[0010]

In order to achieve the above-mentioned object, the invention according to claim 1 is to provide a low-frequency pulse output from a low-frequency pulse output unit for at least two pulses attached to a human body.
In a low-frequency treatment device for treating stiffness and pain of the human body by applying to a pair of conductors, a current detection unit that detects a current flowing through a pair of conductors to which a low-frequency pulse is applied, and a memory that is stored in a storage unit. A current value table in which the width of the current value detected from all the conductor pairs and the current value to be supplied to each conductor pair are associated with each other; Receiving the current value, the current value table is subtracted based on the current value, a supply current value calculation unit for obtaining a current value to be supplied to each conductor pair, and each of the supply current value calculated by the supply current value calculation unit. An output voltage controller for controlling a voltage value of a low-frequency pulse applied from the low-frequency pulse output unit to each conductor pair based on a supply current value is provided.

According to a second aspect of the present invention, a low-frequency pulse output from a low-frequency pulse output unit is applied to at least two pairs of conductors mounted on a human body to treat stiffness and pain in the human body. In the low-frequency treatment device, a current detection unit that detects a current flowing through a pair of conductors to which a low-frequency pulse is applied, and receives a current value related to all the pairs of conductors from the current detection unit, and receives each current. A current value to be supplied to the pair, a supply current value calculation unit that obtains an average of a maximum value and a minimum value of the current values from the current detection unit, and a supply current value obtained by the supply current value calculation unit. An output voltage control unit for controlling a voltage value of a low-frequency pulse applied from the low-frequency pulse output unit to each conductor pair is provided.

According to a third aspect of the present invention, a low-frequency pulse output from a low-frequency pulse output unit is applied to at least one pair of conductors mounted on a human body to treat stiffness and pain in the human body. In the low-frequency therapeutic device, a boosting unit that boosts the low-frequency pulse to a voltage value according to the operation amount, and controls the low-frequency pulse output unit to transmit a low-frequency pulse according to a waveform pattern to the boosting unit. An output waveform control unit that outputs the operation amount according to the cycle of the low-frequency pulse and sets the voltage of the low-frequency pulse to the boosting unit; Receiving a current value from the current detecting unit, and detecting a current value between the conductors based on the change amount of the manipulated variable and the change amount of the detected current value. So that the output waveform controller It is characterized by including operation amount control unit for controlling the operation of al.

According to a fourth aspect of the present invention, a low-frequency pulse output from a low-frequency pulse output unit is applied to at least one pair of conductors mounted on a human body to treat stiffness and pain in the human body. In the low-frequency therapeutic device, a boosting unit that boosts the low-frequency pulse to a voltage value according to the operation amount, and controls the low-frequency pulse output unit to transmit a low-frequency pulse according to a waveform pattern to the boosting unit. An output waveform control unit that outputs the manipulated variable according to the cycle of the low-frequency pulse and sets the voltage of the low-frequency pulse to the boosting unit, and a current flowing through a conductor pair to which the low-frequency pulse is applied. And a fuzzy controller for receiving a detection current value from the current detection unit and fuzzy controlling an operation amount from the output waveform control unit so that a current value between the conductors becomes a target current value. Equipped with a control unit It is characterized by that.

According to a fifth aspect of the present invention, a low-frequency pulse output from a low-frequency pulse output section is applied to at least one pair of conductors mounted on a human body to treat stiffness and pain in the human body. In the low-frequency therapy device, a booster that boosts the low-frequency pulse to a voltage value corresponding to the operation amount, and is stored in a storage unit, and associates the cycle of the low-frequency pulse with the operation amount of the booster. Operating amount table, and controlling the low-frequency pulse output unit to output a low-frequency pulse having a waveform corresponding to a waveform pattern, and using the operating amount table, the operation amount corresponding to the cycle of the low-frequency pulse. And an output waveform control unit for sending the calculated low-frequency pulse to the boosting unit and setting the voltage of the low-frequency pulse.

According to a sixth aspect of the present invention, in the low frequency treatment device according to the fifth aspect of the present invention, a current detecting section for detecting a current flowing through the conductor pair to which the low frequency pulse is applied; Receiving the detected current value from the section, and based on the change amount of the operation amount and the change amount of the detected current value, from the output waveform control section so that the current value between the conductors becomes the target current value. An operation amount control unit for controlling the operation amount is provided.

According to a seventh aspect of the present invention, in the low frequency treatment device according to the fifth aspect of the present invention, a current detector for detecting a current flowing through a pair of conductors to which a low frequency pulse is applied; Receiving the detected current value from the section, the difference between the detected current value and the target current value and the ratio of the change amount of the detected current value to the change amount of the manipulated variable are used as fuzzy variables, A fuzzy control unit for fuzzy controlling the operation amount from the output waveform control unit so as to obtain a value.

In the invention according to claim 8, the low-frequency pulse output from the low-frequency pulse output unit is applied to a plurality of pairs of conductors mounted on the human body to treat stiffness and pain in the human body. In the low-frequency therapy device, a booster that boosts the low-frequency pulse to a voltage value according to the operation amount, a current detector that detects a current flowing through the pair of conductors to which the low-frequency pulse is applied, and a designated waveform According to the pattern, a pair of conductors to which the low-frequency pulse is applied and current is detected is selected, and one of the selected pairs of conductors is connected to the low-frequency pulse output unit via a booster. And a conductor selection unit that connects the other conductor to the current detection unit, and controls the low-frequency pulse output unit to transmit a low-frequency pulse having a waveform according to a waveform pattern to the boost unit. At the same time, the operation amount is output and the An output waveform control unit for setting the voltage of the low-frequency pulse to the unit, receiving the detected current value from the current detection unit, and performing the selection based on the change amount of the operation amount and the change amount of the detection current value. An operation amount control unit that controls an operation amount from the output waveform control unit so that the current value between the conducted conductors becomes a target current value is provided.

According to a ninth aspect of the present invention, a low-frequency pulse output from a low-frequency pulse output unit is applied to a plurality of pairs of conductors mounted on a human body to treat stiffness and pain in the human body. In the low-frequency therapy device, a booster that boosts the low-frequency pulse to a voltage value corresponding to the operation amount, a current detector that detects a current flowing through a pair of conductors to which the low-frequency pulse is applied, and a designated waveform According to the pattern, a conductor pair from which the low-frequency pulse is applied and current is detected is selected, and one of the conductors in the selected conductor pair is connected to the low-frequency pulse output unit via a booster. And a conductor selection unit that connects the other conductor to the current detection unit, and controls the low-frequency pulse output unit to transmit a low-frequency pulse having a waveform according to a waveform pattern to the boosting unit. At the same time, the operation amount is output and the An output waveform control unit for setting the voltage of the low-frequency pulse to the unit, and a detection current value corresponding to a difference between the detection current value and the target current value and a change amount of the operation amount in response to the detection current value from the current detection unit. A fuzzy control unit for fuzzy controlling an operation amount from the output waveform control unit so that a current value between the selected conductors becomes a target current value, using a rate of a change amount of the fuzzy variable as a fuzzy variable. And

[0019]

According to the first aspect of the present invention, when a low-frequency pulse is output from the low-frequency pulse output unit, currents flowing through all the conductor pairs are detected by the current detection unit. Then, the supply current value calculation unit obtains the supply current value for each pair of the conductors using the current value table based on the current value from the current detection unit, and the output voltage control unit obtains the supply current values obtained above. Based on the current value, the voltage value of the low-frequency pulse applied from the low-frequency pulse output section to each conductor pair is controlled. In this way, the value of the current flowing through each pair of conductors is controlled according to the difference in the degree of stiffness of the mounting site.

According to the second aspect of the present invention, the current flowing through all the pairs of conductors is detected by the current detector. Then, the supply current value calculation unit averages the maximum value and the minimum value of the current values from the current detection unit to determine the supply current value for each pair of conductors, and the output voltage control unit determines Based on the supplied current value, the voltage value of the low-frequency pulse applied from the low-frequency pulse output section to each of the conductor pairs is controlled. In this way, the current value flowing through each conductor pair is controlled so as to be the above average value.

In the invention according to claim 3, the low-frequency pulse output section is controlled by the output waveform control section, and a low-frequency pulse having a waveform corresponding to the waveform pattern is transmitted to the boosting section. Further, an operation amount corresponding to the cycle of the low frequency pulse is output. On the other hand, a current flowing through the conductor pair to which the low-frequency pulse is applied is detected by the current detection unit. Then, based on the change amount of the operation amount and the change amount of the detected current value, the operation amount control unit controls the operation amount from the output waveform control unit so that the current value between the conductors becomes the target current value. Is controlled and sent to the booster. As a result, based on the manipulated variable controlled by the booster,
The low-frequency pulse is boosted so that the value of the current flowing through the pair of conductors becomes a constant target current value independent of frequency.

Further, in the invention according to claim 4, the low-frequency pulse output section is controlled by the output waveform control section, and a low-frequency pulse having a waveform corresponding to the waveform pattern is transmitted to the boosting section. Further, an operation amount corresponding to the cycle of the low frequency pulse is output. On the other hand, a current flowing through the conductor pair to which the low-frequency pulse is applied is detected by the current detection unit. The fuzzy control unit sets the difference between the detected current value and the target current value and the ratio of the change amount of the detected current value to the change amount of the operation amount as a fuzzy variable, and the current value between the leads becomes the target current value. As described above, the operation amount from the output waveform control unit is fuzzy controlled and sent to the boosting unit. As a result, the low-frequency pulse is boosted by the boosting unit based on the fuzzy controlled operation amount so that the value of the current flowing through the conductor pair becomes a constant target current value independent of frequency. .

Further, in the invention according to claim 5, the low-frequency pulse output section is controlled by the output waveform control section, and a low-frequency pulse having a waveform corresponding to the waveform pattern is output to the boosting section. Further, an operation amount corresponding to the cycle of the low frequency pulse is obtained using the operation amount table, and is sent to the booster. Then, the low-frequency pulse is boosted to a voltage value according to the operation amount by the boosting unit. Thus, the voltage value of the output low-frequency pulse is set according to the cycle of the low-frequency pulse, and the frequency dependence of the current value flowing through the conductor pair is corrected.

In the invention according to claim 6, the current detector detects the current flowing through the pair of conductors to which the low-frequency pulse has been applied. Then, based on the change amount of the operation amount and the change amount of the detected current value, the operation amount control unit controls the operation amount from the output waveform control unit so that the current value between the conductors becomes the target current value. Is controlled. As a result, the low-frequency pulse is boosted by the boosting unit based on the controlled operation amount so that the value of the current flowing through the conductor pair becomes the target current value.

In the invention according to claim 7, the current flowing through the pair of conductors to which the low-frequency pulse is applied is detected by the current detector. Then, the fuzzy control unit uses the difference between the detected current value and the target current value and the ratio of the change amount of the detected current value to the change amount of the operation amount as a fuzzy variable,
An operation amount from the output waveform control unit is fuzzy controlled so that a current value between the conductors becomes a target current value. As a result, the booster raises the low frequency pulse based on the fuzzy controlled operation amount so that the value of the current flowing through the conductor pair becomes the target current value.

In the invention according to claim 8, a conductor pair according to the waveform pattern is selected by the conductor selection unit.
One of the conductors is connected to the low-frequency pulse output unit via the booster, and the other is connected to the current detector. And
The low-frequency pulse output unit is controlled by the output waveform control unit, and a low-frequency pulse having a waveform corresponding to the waveform pattern is output to the boosting unit, and the operation amount for setting the voltage of the low-frequency pulse is output. You. On the other hand, the current flowing through the selected pair of conductors is detected by the current detection unit. Then, based on the change amount of the operation amount and the change amount of the detected current value, the operation amount control unit controls the output waveform control unit so that the current value between the selected conductors becomes the target current value. The manipulated variable is controlled and sent to the booster. Then, the low-frequency pulse is boosted to a voltage value corresponding to the controlled operation amount by the boosting unit. Thus, the voltage of the low-frequency pulse is controlled for each pair of conductors so that the value of the current flowing through each pair of conductors becomes the target current value.

According to the ninth aspect of the present invention, in the sixth aspect,
In the same manner as described above, a conductor pair is selected, a low-frequency pulse corresponding to the waveform pattern is output to the booster, an operation amount is output, and a current flowing through the selected conductor pair is detected by the current detector. You. And, by the fuzzy control unit,
The difference between the detected current value and the target current value and the ratio of the change amount of the detected current value to the change amount of the manipulated variable are used as fuzzy variables,
The operation amount from the output waveform control unit is fuzzy controlled so that the current value between the selected conductors becomes the target current value, and is sent to the boosting unit. Then, the low-frequency pulse is boosted to a voltage value corresponding to the controlled operation amount by the boosting unit. Thus, the voltage of the low-frequency pulse is fuzzy controlled for each pair of conductors so that the value of the current flowing through each pair of conductors becomes the target current value.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. <First Embodiment> The present embodiment relates to a low-frequency treatment device for controlling a current value to be supplied in accordance with a difference in the degree of stiffness of a mounting portion. FIG. 1 is a block diagram of the low frequency treatment device of the present embodiment. Note that the low-frequency treatment device in the present embodiment is a low-frequency treatment device having a plurality of electrode pairs.

A liquid crystal display (hereinafter abbreviated as LCD) 1 displays an operation state, an output state, and the like of the low-frequency treatment device. The operation unit 2 has various operation keys such as a power key, a start key, a stop key, and a mode selection key. The low frequency pulse output unit 7 outputs a low frequency pulse under the control of the output waveform control unit 6 as the output voltage control unit in the CPU (Central Processing Unit) 3. And the booster 8
Boosts the low-frequency pulse from the low-frequency pulse output unit 7 to a predetermined voltage value and sends it to the pad switching unit 9. The boost value at that time is set by the output voltage control unit 12 based on a control signal sent from the output waveform control unit 6 via the D / A converter 11. Pad switching unit 9
Selects which combination of the conductors in the electrode pad 10 is to be applied with the low frequency pulse. The current detecting unit 13 detects a current value flowing through the electrode pad 10 to which the low-frequency pulse is applied, and the detected current value is A / A.
The data is A / D converted by the D converter 14 and sent to the supply current value calculator 15 of the CPU 3. In addition, RAM (random
The access memory 4 temporarily stores the current value and the like detected by the current detecting unit 13, while the ROM (read only memory) 5 stores a control program for the CPU 3 and a current value table 16 Are stored.

FIG. 2 is an external view of the electrode pad 10. The electrode pad 10 includes two electrode pads, a pad A and a pad B, and the electrode pad A has five conductors.
While (A-1) to (A-5) are provided, the electrode pad B is provided with five conductors (B-1) to (B-5). And the conductor (A-1) and the conductor (B-1), the conductor (A-2) and the conductor (B-2), the conductor (A-3) and the conductor (B-3), Michiko (A-
4) and the conductor (B-4), and the conductor (A-5) and the conductor (B-5) form a pair.

The pad switching section 9 selects to which of the five pairs of conductors the low frequency pulse is to be applied. In addition, the pair of the above-mentioned conductor is a conductor (A-1) and a conductor (B-1).
The combination is not limited to the combination of the conductor (A-1) and the conductor (B-2)... Or the conductor (A-1) and the conductor (A).
-2).

The supply current value calculator 15 is configured to supply a current corresponding to the difference in the degree of stiffness of the mounting portion to the pair of conductors based on the value of the current flowing through the pair of conductors detected by the current detector 13. To find the supply current value for Then, the output waveform control unit 6 obtains an applied voltage value for supplying the supplied current value to the conductor pair, and outputs a control signal designating the applied voltage value to the D / A converter 11. .

Next, the details of the current detector 13 and the output voltage controller 12 will be described. FIG. 3 is a circuit diagram showing details of the current detection unit 13. In FIG. 3, a pulse current from an electrode pad 10 is converted into a pulse voltage by a resistor 17 and then amplified by an amplifier 20 with the resistance values of the resistors 18 and 19 as constants, and the A / D converter 1
4 is sent. Then, it is converted into a digital value and C
Once stored in the RAM 4 by the PU 3, the CPU
Various processing is performed by 3.

FIG. 4 is a circuit diagram showing details of the output voltage control section 12. As shown in FIG. The digital voltage value from the D / A converter 11 is impedance-converted by the amplifier 21 and then biases the transistor 22. A voltage value according to the bias value is sent from the transistor 23 to the booster 8. The resistors 24 and 25 are resistors that determine a constant at the time of bias.

The low-frequency treatment device having the above configuration operates as follows. FIG. 5 is a flowchart of the low frequency treatment control processing operation by the CPU 3. Hereinafter, the low frequency treatment control processing operation will be described in detail with reference to FIG.

In step S1, the mode selection key on the operation unit 2 is operated to change the setting of a treatment mode for setting a treatment method such as "slap" or "massage" and a treatment site mode for setting a treatment site. It is determined whether it has been performed. As a result, if it has been changed, the process proceeds to step S2; otherwise, the process proceeds to step S3. Step S2
Then, a treatment mode, a treatment region mode, and the like are newly set in accordance with the operation of the mode selection key.

In step S3, it is determined whether or not the start key on the operation unit 2 has been pressed to output a low-frequency pulse. As a result, if a command has been issued, the process proceeds to step S4. In step S4, a low-frequency pulse having the voltage value set by the output voltage control unit 12 and the boosting unit 8 is output based on the control signal from the output waveform control unit 6, and the mode set in step S2 is set. Is applied to the conductor pair of the electrode pad 10 that is switched and set by the pad switching unit 9 in accordance with. In step S5, it is determined whether or not the intensity setting volume in the operation unit 2 has been operated to change the intensity of the low frequency pulse. As a result, if it has been changed, the process proceeds to step S6; otherwise, the process proceeds to step S7. In step S6, the output waveform control unit 6,
The value of the pulse voltage is changed by the output voltage controller 12 and the booster 8.

In step S7, it is determined whether or not a current control mode for performing current control for uniformly relieving stiffness is set by the mode selection key.
As a result, if the current control mode has been set, the process proceeds to step S8; otherwise, the process proceeds to step S9. In step S8, a current control subroutine as described in detail below is executed. In step S9, it is determined whether or not the stop key of the operation unit 2 has been pressed to instruct the end of the treatment. As a result, if the end of the treatment has not been instructed, the process returns to step S4 to continue the treatment, and if it has been instructed, the low frequency treatment control operation ends.

As described above, the treatment of stiffness and pain is performed. During the treatment, there is a difference in the value of the current flowing between each pair of conductors of the electrode pad 10 due to variations in the degree of loosening. May occur. Therefore, the current value flowing through the pair of conductors is monitored at regular time intervals, and if it becomes necessary to control the current value in order to loosen the stiffness evenly, current control is performed. Hereinafter, the low frequency treatment control processing operation
The current control subroutine executed in step S8 (hereinafter referred to as a main routine) will be described in more detail with reference to FIG.

In step S11, one of the electrode pads 10
The value of the current flowing between the two conductor pairs is detected by the current detection unit 13. In step S12, it is determined whether or not the current value measurement between the conductors in the conductor has been completed. As a result, upon completion, the process proceeds to step S13. Step S13
Then, it is determined whether or not the current value measurement of all the five pairs of conductors has been completed. As a result, upon completion, the process proceeds to step S14.

In step S14, the supply current value calculator 1
By (5), (maximum value−minimum value) = X of the current values related to the above five conductor pairs is obtained. In step S15, the current value table 16 stored in the ROM 5 based on the value of "X" obtained in step S14.
Is subtracted, and a supply current value to be supplied to one conductor pair is obtained. Here, the current value table 16 corresponds to FIG.
As shown in the figure, it is obtained in advance from the results of experiments with a large number of subjects, and associates the width of the current value flowing to a certain part with each supply current value that the subject feels comfortable at that time. . In step S16, the above step S15
Is applied by the output waveform control unit 6 so that the supply current value obtained in step (1) is supplied to the conductor pair. As a result, when a low-frequency pulse is applied to the conductor pair in step S4 in the main routine, the output voltage control unit 12 and the boost unit 8 are controlled by the control signal from the output waveform control unit 6 A low frequency pulse of voltage is applied. In step S17, it is determined whether or not the current control for all the conductor pairs has been completed. As a result, if the processing has not been completed, the process returns to step S14, and shifts to current control for the next pair of conductors. On the other hand, if the processing has been completed, the current control subroutine ends, and the process returns to step S9 in the main routine.

As described above, in the present embodiment, the value of the current flowing through each pair of conductors in the electrode pad 10 is detected by the current detection unit 13 and the current value is detected based on the maximum value and the minimum value of the detected current value. Then, the output waveform control unit 6, the output voltage control unit 12, and the step-up voltage are supplied so that a current value corresponding to the degree of stiffness determined by the supply current value calculation unit 15 using the current value table 16 flows through each pair of conductors. The section 8 controls the low-frequency pulse voltage value applied to each pair of conductors. Therefore, each conductor pair in the electrode pad 10 has:
The current value flows according to the difference in the degree of stiffness (the degree of loosening of the stiffness) of the mounting site.

That is, according to the present embodiment, an excessively strong current flows in a portion where stiffness is not required (current does not need to be applied very strongly), and an excessively weak current flows in a portion where stiffness is present, thereby relieving stiffness. On the contrary, it is possible to eliminate stiffness uniformly by eliminating the problem of increasing fatigue.

FIG. 8 is a flowchart of a current control subroutine different from that of FIG. Hereinafter, another current control processing operation will be described with reference to FIG. In steps S21 to S23, the current values of all five pairs of conductors are measured as in steps S11 to S13 in the current control subroutine shown in FIG.

In step S24, the supply current value calculation unit 1
With 5, the average value X '(= (maximum value + minimum value) / 2) of the current values in the five pairs of conductors is obtained. Step S
At 25, an applied voltage is determined by the output waveform control unit 6 so that the current value flowing through one conductor pair in the electrode pad 10 becomes the current value "X '" determined in step S24. The output voltage control unit 12 and the boosting unit 8 are controlled by the control signal from the output waveform control unit 6, and a low-frequency pulse of a required voltage is applied to the conductor pair. Thus, the voltage value applied to the conductor pair on the electrode pad 10 is controlled, and the current value flowing through the conductor pair is controlled so as to be a constant value “X ′”. In step S26, it is determined whether or not the current control for all the conductor pairs has been completed. As a result, if not finished, the process returns to the step S25, and shifts to current control for the next pair of conductors. On the other hand, if the processing has been completed, the current control subroutine is completed, and step S in the main routine is executed.
Return to 9.

In this case, the average value of the current flowing through the most stiff part and the average value of the current flowing through the least stiff part is defined as the target value of the current flowing through each conductor pair in the electrode pad 10, and D / A The converter 11, the output voltage controller 12, and the booster 8 control the pulse voltage applied to each of the pairs of conductors.

<Second Embodiment> The present embodiment relates to a low-frequency treatment device in which the current value flowing through a pair of conductors has no frequency dependency. FIG. 9 is a block diagram of the low frequency treatment device of the present embodiment. The LCD 31 displays an operation state, an output state, and the like of the low frequency treatment device. Operation unit 3
Reference numeral 2 has various operation keys such as a power key, a start key, a stop key, and a waveform mode selection key. Low frequency pulse output unit 39
Outputs a low-frequency pulse from the power supply under the control of the output waveform control unit 38 in the CPU 33. The boosting section 40 boosts the low-frequency pulse from the low-frequency pulse output section 39 to a predetermined voltage and sends it to the electrode pad 42. The boost value at that time is determined by the operation amount sent from the output waveform control unit 38 via the D / A converter 41.

Note that 34 is a RAM and 35 is a ROM. An operation amount table 3 described in detail later is stored in the ROM 35.
6 and low-frequency pulse data 37 are stored. here,
As shown in FIG. 10, the operation amount table 36 associates the period TP of the low-frequency pulse with the operation amount of the booster 40 determined by the period TP. On the other hand, the low frequency pulse data 37 is information on the waveform mode (pulse width, output intensity, polarity, period, etc.) of the waveform mode corresponding to the above-described treatment mode such as “slap” or “massage”.

FIG. 11 is a flowchart of the low frequency treatment control processing operation by the CPU 33. Hereinafter, FIG.
Accordingly, the low-frequency treatment control processing operation in the present embodiment will be described in detail. Prior to the start of the low-frequency treatment control operation, it is assumed that the waveform mode selection key on the operation unit 32 has been operated to select a waveform mode corresponding to the treatment mode.

In step S31, it is determined whether or not the start key of the operation unit 32 has been operated to output a low-frequency pulse. As a result, if a command has been issued, the process proceeds to step S32. In step S32, the output waveform control unit 38 reads out the waveform mode information corresponding to the already selected waveform mode from the low frequency pulse data 37 stored in the ROM 35. In step S33, the operation amount table 36 stored in the ROM 35 is retrieved based on the cycle TP, which is one of the waveform mode information read in step S32, to obtain the operation amount for the booster 40. . In step S34, the obtained operation amount is D / A converted by the D / A converter 41 and sent to the booster 40. As a result, the voltage of the low-frequency pulse output from the low-frequency pulse output unit 39 is boosted by the boost value determined by the boost amount in the boost unit 40.

In step S35, a pulse output control subroutine, which will be described in detail later, is executed by the low frequency pulse output unit 39 based on the waveform mode information read in step S32. In step S36, a timer T for measuring a pause period (hereinafter referred to as a waveform pause period) provided between low-frequency pulse trains of different waveform patterns among the plurality of waveforms in the selected waveform mode.
1 and a timer T2 for measuring a period for outputting a low-frequency pulse train of one waveform pattern (hereinafter, referred to as a waveform output period).
Is cleared. In step S37, the operation unit 3
It is determined whether or not the stop key in 2 has been operated to instruct the end of the output of the low frequency pulse. As a result, if no command has been issued, the process returns to step S32 to continue outputting the low-frequency pulse. On the other hand, if the command has been issued, the low-frequency treatment control processing operation ends.

Although the detailed description is omitted, the timers T1 and T2 are constantly counting up by interruption processing from the CPU 33 at regular time intervals.

FIG. 12 is a flowchart showing the operation of the low frequency treatment control operation (hereinafter referred to as a main routine) shown in FIG.
35 is a flowchart of a pulse output control subroutine executed in 35. Hereinafter, the pulse output control subroutine will be described in detail with reference to FIG. Prior to the pulse output control subroutine, it is assumed that the content of the timer T1 has been cleared.

In step S41, it is determined whether or not the content of the timer T1 for counting the above-mentioned waveform pause period has become larger than the waveform pause period TQ. If it is longer than the waveform pause period TQ, the process proceeds to step S42. In step S42, the content of the timer T2 for measuring the waveform output period is cleared. In step S43, it is determined whether or not the content of the timer T2 is longer than the waveform output period TR. If it is longer than the waveform output period TR, one cycle of the waveform output in the waveform pattern has been completed, and the process returns to step S36 in the main routine. On the other hand, if it is shorter than the waveform output period TR, the process proceeds to step S44.

In step S44, the content of the timer T1 is cleared, and an ON signal for turning on the power of the low frequency pulse output section 39 is output. In step S45, it is determined whether or not the pulse width time determined by the pulse width, which is one of the waveform mode information read in step S33 of the main routine, has elapsed. If it has passed, the process proceeds to step S46. Step S46
Since one low-frequency pulse of the waveform type is output, an off signal for turning off the power of the low-frequency pulse output unit 39 is output.

In step S47, it is determined whether or not the content of the timer T1 is larger than the period TP of the low frequency pulse in the waveform pattern. When the period becomes longer than the period TP, the process returns to the step S43 and shifts to the output operation of the next one pulse. Thus, the above-described steps S43 to S47 are repeated, and low-frequency pulses according to the waveform pattern are sequentially output. At this time, if it is determined in step S43 that the content of the timer T2 has become longer than the waveform output period TR, one cycle of the waveform output in the waveform pattern ends, and the process returns to step S36 in the main routine. .

In this manner, a low-frequency pulse having the waveform pattern is output according to the pulse output control subroutine. At this time, the voltage of the low-frequency pulse is based on the operation amount obtained in step S33 in the main routine. This is set by the booster 40. Here, the operation amount is set in the operation amount table 36.
Is set so as to decrease as the period TP of the low frequency pulse decreases. Therefore, even if the frequency of the low-frequency pulse applied to the electrode pad 42 decreases, the current flowing between the paired conductors does not decrease.

The measurement of the pulse width time performed in step S45 in the pulse output subroutine is performed by setting a unit time of a time elapse determination loop and counting the number of times this loop is executed.

As described above, in this embodiment, the above R
The operation amount table 36 is stored in the OM 35. And C
The output waveform control unit 38 of the PU 33 refers to the operation amount table 36 of the ROM 35 based on the cycle TP of the waveform mode information set according to the selected waveform mode, and determines the operation amount of the booster 40 corresponding to the cycle TP. Ask. At this time, the period T of the low frequency pulse in the manipulated variable table 36
The correspondence between P and the operation amount of the booster 40 is such that the pulse voltage of the low-frequency pulse also decreases as the cycle TP decreases. Therefore, according to the present embodiment, even if the frequency of the low-frequency pulse applied to the conductor pair of the electrode pad 42 becomes lower, the current flowing between the conductors forming the pair does not decrease, and the tapping occurs. Even if a waveform mode in which a low-frequency waveform and a high-frequency waveform for "massage" are mixed is selected, the same electrical stimulation is always given,
There is no discomfort to the user.

<Third Embodiment> The present embodiment relates to a low-frequency therapeutic device in which a constant current flows without the frequency dependence of the current value flowing through the conductor pair. FIG.
FIG. 3 is a block diagram of the low frequency treatment device of the present embodiment. The LCD 51, the operation unit 52, the operation amount table 56, the low frequency pulse data 57, the output waveform control unit 58, the low frequency pulse output unit 59, the boosting unit 60, the D / A converter 61, and the electrode pad 62 are the second embodiment. LCD 31 in FIG. 9, operation unit 32, operation amount table 36, low frequency pulse data 3
7, the output waveform control unit 38, the low-frequency pulse output unit 39, the boosting unit 40, the D / A converter 41, and the electrode pad 42 operate in the same manner and operate in the same manner.

The current detector 63 detects a current flowing through the conductor pair of the electrode pad 62. Also, the A / D converter 6
Reference numeral 4 denotes an A / D conversion of the current value detected by the current detection unit 63 and sends the converted value to an operation amount control unit 65 in the CPU 53.
Further, the maximum value of the detected current value in all the conductor pairs obtained by one current detection is held in the peak hold circuit. The operation amount control unit 65 sets the current value flowing through the conductor pair to the target current value target set by the output intensity adjustment knob of the operation unit 52 based on the detection current value from the A / D converter 64. Next, the operation amount from the main force waveform control unit 58 is controlled.

FIG. 14 is a flowchart of the low-frequency treatment control operation performed by the CPU 53. Hereinafter, FIG.
Accordingly, the low-frequency treatment control processing operation in the present embodiment will be described in detail. Prior to the start of the low-frequency treatment control processing operation, it is assumed that the waveform mode selection key on the operation unit 52 has been operated to select a waveform mode corresponding to the treatment mode.

In step S51, it is determined whether or not the start key in the operation section 52 has been operated to output a low-frequency pulse. As a result, if a command has been issued, the process proceeds to step S52. In step S52, a target current value target is set based on the output intensity specified by the output intensity adjustment knob on the operation unit 52. In steps S53 and S54, the waveform mode information is read out in the same manner as in steps S32 to S34 in the flowchart of the low-frequency treatment control processing operation of the second embodiment, and the period TP is set using the operation amount table 56. A corresponding operation amount is obtained, D / A converted, and sent to the booster 60.

In step S55, a pulse output control subroutine, which will be described in detail later, is executed by the low frequency pulse output unit 59 based on the waveform mode information read in step S52. In step S56, the flag AD indicating the current value readable state It is determined whether or not the content of FLAG is "1". As a result, if the current value is “1” and the current value can be read, the process proceeds to step S57; otherwise, the process proceeds to step S59. In step S57, the maximum current value held in the peak hold circuit of the A / D converter 64 when the low frequency pulse is applied in step S55 is stored in the RAM 54 by the current detection unit 63. Thus, the value of the current flowing through the conductor pair is read. After that, the flag AD “0” is set to FLAG to inhibit reading of the current value, and the peak hold circuit is reset.

In step S58, the operation amount control unit 65 executes a current control subroutine for controlling a current value flowing through the conductor pair of the electrode pad 62 to a target current value target. In step S59, it is determined whether or not the content of the timer T2 for measuring the waveform output period is longer than the waveform output period TR. As a result, if it is larger, the process proceeds to step S60; otherwise, the process returns to step S55 to continue outputting the low-frequency pulse of the waveform pattern. In step S60, a timer T1 for measuring the above-mentioned waveform pause period
And the timer T2 for measuring the waveform output period is cleared, and the flag F indicating the low-frequency pulse output state is set to "0". In step S61, it is determined whether the stop key of the operation unit 52 has been pressed and a command to end the output of the low-frequency pulse has been issued. As a result, if no command has been issued, the flow returns to step S53 to shift to the output of a low-frequency pulse of the next waveform pattern. On the other hand, if the command has been issued, the low-frequency treatment control processing operation ends.

FIG. 15 is a flowchart showing the operation of the low frequency treatment control processing operation (hereinafter referred to as a main routine) shown in FIG.
55 is a flowchart of a pulse output control subroutine executed in 55. Hereinafter, the pulse output control subroutine will be described in detail with reference to FIG. Prior to the pulse output control subroutine, it is assumed that the content of the timer T1 has been cleared.

In step S71, it is determined whether or not the content of the flag F is "1". As a result, if it is "1" (that is, if it is in the low-frequency pulse output state), the flow proceeds to step S72. On the other hand, if not (that is, if the above-mentioned waveform pause period), the process proceeds to step S78. In step S72, it is determined whether the content of the timer T1 is larger than the cycle TP. As a result, if the period is longer than the period TR, the process proceeds to step S73. If the period is shorter than the period TR, the pulse output subroutine is terminated and the process returns to step S56 in the main routine.

In step S73, the peak hold circuit in the A / D converter 64 is set. Step S
At 74, the content of the timer T1 is cleared, and an ON signal for turning on the power of the low frequency pulse output unit 59 is output. In step S75, it is determined whether the pulse width time determined by the pulse width, which is one of the waveform mode information read in step S53 of the main routine, has elapsed. If it has passed, the process proceeds to step S76. In step S76, since one low-frequency pulse in the waveform pattern has been output, an off signal for turning off the power of the low-frequency pulse output unit 59 is output. In step S77, the flag AD “1” is set to FLAG, and the current value reading prohibition is released. After that, the pulse output control subroutine ends, and the process returns to step S56 in the main routine.

In step S78, it is determined whether or not the content of the timer T1 has become longer than the waveform pause period TQ. As a result, if it is longer than the waveform pause period TQ, the process proceeds to step S79, and if it is shorter than the waveform pause period TQ, step S79 is skipped. In step S79, since the waveform pause period has ended, the timer T1 is set to enter the waveform output period.
Is cleared, and the flag F is set to "1". After that, the pulse output control subroutine ends, and the process returns to step S56 in the main routine.

In this manner, a low frequency pulse having the waveform pattern is output according to the pulse output control subroutine. At this time, the voltage of the low frequency pulse is based on the operation amount obtained in step S54 in the main routine. And is set by the booster 60. At this time, in this embodiment, the operation amount control unit 65
The above-described current control subroutine controls the operation amount such that the current value flowing through each pair of conductors of the electrode pad 62 becomes the target current value target.

FIG. 16 shows an applied voltage-detected current characteristic for a pair of conductors when the low-frequency pulse waveform and the mounting site of the electrode pad 62 are fixed by the present low-frequency therapeutic device. As can be seen from the figure, the applied voltage-detection current characteristic shows a substantially linear function characteristic. Therefore, in the present embodiment, the slope of the linear function is obtained from the detected current value from the D / A converter 64 and the operation amount to the A / D converter 61, and this slope is used to calculate the target current value target. The operation amount of the booster 60 is controlled by obtaining the applied voltage.

FIG. 17 is a flowchart of a current control subroutine executed in step S58 of the main routine shown in FIG. Hereinafter, the current control subroutine will be described in detail with reference to FIG. here,
A RAM 54 stores a manipulated variable output from the output waveform control unit 58 to the D / A converter 61. NE
W, a register DA for storing the manipulated variable previously output from the output waveform control unit 58 to the D / A converter 61 OLD, a register AD for storing the detected current value output from the A / D converter 64 N
EW, a register AD for storing the detected current value previously output from the A / D converter 64 OLD is set.

At step S81, the register DA The last manipulated variable stored in NEW is stored in register DA. OLD while the above register AD The previous detected current value stored in NEW is stored in register DA. Copied to OLD. In step S82, the register AD The content of NEW is updated to the current value stored in the RAM 54 in step S57 of the main subroutine. In addition, register DA The content of NEW is updated to the operation amount for the D / A converter 61 (step S54 of the main subroutine or step S85 of the current control subroutine). In step S83, the ratio of the change amount of the detected current value to the change amount of the operation amount is calculated by the following equation, and the slope slope of the linear function represented by the applied voltage-detection current characteristic is obtained. slope = {(AD OLD) − (AD NEW)} / {(DA OLD) − (DA NEW)} Step S84: A control amount ΔDA for the operation amount of the D / A converter 61 for making the detected current value equal to the target current value target is obtained by the following equation. ΔDA = 1 / slope * {target- (AD NEW) + slope * (DA NE
W)} In step S85, the control amount ΔDA obtained in step S84 is stored in the register DA. A new operation amount for the booster 60 is calculated by adding to the operation amount stored in NEW. Then, the new operation amount is converted by the D / A converter 61 into D / A
The signal is A-converted and sent to the booster 60. Thereafter, the current control subroutine ends, and the process returns to step S59 in the main routine.

As a result, the voltage of the low-frequency pulse output by executing the next pulse output control subroutine is boosted based on the new operation amount.

As described above, in this embodiment, the operation amount table 56 is stored in the ROM 55. And
As in the case of the second embodiment, the operation amount to the booster 60 according to the period TP of the low frequency pulse is obtained using the operation amount table 56. Then, the current flowing through the conductor pair of the electrode pad 62 is detected by the current detection unit 63, and a control value for the operation amount described above that makes the detected current value the target current value target is obtained by the operation amount control unit 65 of the CPU 53. Like that.

Therefore, according to the present embodiment, the frequency dependence of the current value flowing through the conductor pair is eliminated, and the current value flowing through the conductor pair is set to the target current value target (period TP).
The pulse voltage of the low-frequency pulse can be controlled so as to be always a constant value regardless of the variation. That is, according to the present embodiment, the period TP is determined by the variation in the characteristics of the human body to which the electrode pad 62 is attached, the affected area thereof, and the adhesive gel used for the electrode.
-The detected current value can be kept constant even if the detected current value characteristic changes. That is, it is possible to reduce the difference in electrical stimulation between the waveform having a small frequency for “hitting” and the waveform having a large frequency for “massaging” with respect to the user and all of the electrode pads 62. This makes it possible to eliminate the difference between patients in the frequency dependence of the strength.

<Fourth Embodiment> According to the third embodiment,
The frequency-dependent patient-to-patient difference in the current value flowing through the pair of conductors can be eliminated, but the overshoot and undershoot generated during the control process cannot be completely suppressed, and the user feels a slight discomfort. Will be given. Therefore, in the present embodiment, the overshoot and the undershoot are eliminated by introducing the ambiguity due to the fuzzy control.

FIG. 18 is a block diagram of the low frequency treatment device of the present embodiment. LCD 71, operation unit 72, operation amount table 76, low frequency pulse data 77, output waveform control unit 7
8, low frequency pulse output section 79, booster section 80, D / A converter 8
1 and the electrode pad 82 are the same as those in the second embodiment (FIG. 9).
CD 31, operation unit 32, operation amount table 36, low frequency pulse data 37, output waveform control unit 38, low frequency pulse output unit 39, boost unit 40, D / A converter 41, and electrode pad 42
Operates similarly with the same configuration. Further, the current detection unit 83
The A / D converter 84 operates in the same manner as the current detector 63 and the A / D converter 64 in the third embodiment (FIG. 13).

The following fuzzy inference rules 86 are stored in the ROM 75. R1: if DIFF is NB and ΔAD is PB then ΔDA is PB R2: if DIFF is NS and ΔAD is PS then ΔDA is PS R3: if DIFF is PB and ΔAD is PB then ΔDA is NB R4: if DIFF is PS and ΔAD is PS then ΔDA is NS… Rn:…

The fuzzy controller 85 is connected to the electrode pad 8
The amount of operation from the output waveform control unit 78 to the boosting unit 80 is fuzzy controlled so that the current value flowing through the selected pair of conductors in Step 2 becomes a constant value. Here, the inference by the fuzzy controller 85 is based on the direct method. FIG. 19 shows a membership function used for fuzzy control. Note that the fuzzy variable is a difference DIFF of the detected current value detected by the current detection unit 83 with respect to the target current value target, and a detection amount from the A / D converter 84 with respect to a change amount of the operation amount to the D / A converter 81. This is the ratio ΔAD of the amount of change in the current value.

The fuzzy control unit 85 includes the current detecting unit 8
And the difference ΔAD and the difference
DIFF is obtained, and the degree of conformity of each proposition of the antecedent in each rule Rn of the fuzzy inference rule 86 is obtained from the membership function. Then, the degree of conformity of the consequent part is obtained as an inference result from the degree of conformity of the antecedent part. Further, based on the inference results of all the rules R1 to Rn in the fuzzy inference rule 86, the booster 8
The control value ΔDA of the operation amount to 0 is calculated.

FIG. 20 is a flowchart of the low-frequency treatment control operation performed by the CPU 73. Hereinafter, FIG.
Accordingly, the low-frequency treatment control processing operation in the present embodiment will be described in detail.

In steps S91 to S97, the target current value target is set and the waveform mode information is read out in the same manner as in steps S51 to S57 in the flowchart of the low frequency treatment control processing operation of the third embodiment. Then, an operation amount corresponding to the cycle TP for the booster 80 is obtained using the operation amount table 76, and the same pulse output control subroutine as the pulse output control subroutine in the third embodiment is executed according to the flowchart shown in FIG. Value can be read (flag AD If FLAG = 1), the current values flowing through all the pairs of conductors are detected.

In step S98, the fuzzy controller 85
As a result, a fuzzy control subroutine for performing fuzzy control such that the current flowing through the conductor pair of the electrode pad 82 becomes the target current value target is executed. In steps S99 to S101, as in steps S59 to S61 in the flow chart of the low frequency treatment control processing operation of the third embodiment, when the waveform pause period is entered (timer T2> waveform output period TR), the low frequency pulse output is performed. “0” is set to the flag F indicating the state, and the low-frequency treatment control processing operation ends.

FIGS. 22 and 23 are flowcharts of a fuzzy control subroutine executed in step S98 of the main routine shown in FIG. Hereinafter, FIG.
2 and FIG. 23, the fuzzy control subroutine will be described in detail. In this embodiment, as in the third embodiment, the output waveform control unit 7 is stored in the RAM 74.
8 is a register DA for storing the new / previous manipulated variable output to the D / A converter 81 NEW and register DA OLD, a register AD for storing the new / previous detected current value output from the A / D converter 84 NEW and register AD OLD is set.

In steps S121 and S122, the previous operation amount and the detected current value are stored in the register DA in the same manner as in steps S81 and S82 in the current control subroutine of the third embodiment. OLD and register AD OLD copied to register DA NEW and register AD The content of NEW is updated to the current operation amount and detected current value. Step S12
In step 3, the fuzzy variable ΔAD is obtained by the following equation. ΔAD ⁰ = {(AD OLD) − (AD NEW)} / {(DA OLD) − (DA NEW)} In step S124, the fuzzy variable DIFF is obtained by the following equation.
Is required. DIFF ⁰ = (AD NEW) -target

In step S125, the fuzzy inference rule 86
Is set to an initial value "1" for the rule number n of. In step S126, the rule Rn is read from the fuzzy inference rule 86 stored in the ROM 75. Then, using the calculated fuzzy variables ΔAD ⁰ and DIFF ⁰ , the rule Rn
The degree of conformity of the antecedent of is obtained by the following equation. ω _n = A _n1 (ΔAD ⁰ ) ∧A _n2 (DIFF ⁰ ) where A: membership function ω _n : fitness of the antecedent of rule Rn In step S127, fitness ω _{n of the} antecedent of rule Rn , The conformity of the consequent part of the rule Rn is calculated by the following equation, and the inference result A ⁰ _n3 (ΔDA) by the rule Rn is obtained. A ⁰ _n3 (ΔDA) = ω _n · A _n3 (ΔDA) In step S128, the content of the rule number n is incremented. In step S129, it is determined whether or not the content of the rule number n is larger than the rule number “N”. As a result, if it is larger, the process proceeds to step S130, and if it is smaller, the process returns to step S126 to shift to the process for the next rule.

In step S130, a final fuzzy inference result is obtained by the following equation from the inference results of all the rules R1 to Rn obtained as described above. In ^{_{A 0 3 = A 0 13 ∪A}} 0 23 ∪ ... ∪A 0 n3 step S131, the determined value of the fuzzy inference result obtained in step S130 is obtained by the centroid method,
The control amount ΔDA for the above-mentioned operation amount to the booster 80 is obtained. ^{ΔDA 0 = ∫ (ΔDA) ·} A 0 3 · d (ΔDA) / ∫A 0 3 · d (ΔD
A) In step S132, the control amount ΔDA ⁰ obtained in step S131 is stored in the register DA. A new operation amount for the booster 80 is calculated by adding to the operation amount stored in NEW. And this new operation amount is the D / A converter 8
The signal is D / A converted at 1 and sent to the booster 80. Thereafter, the fuzzy control subroutine ends, and the process returns to step S99 in the main routine.

As a result, the voltage of the low frequency pulse output by executing the next pulse output control subroutine is boosted based on the new operation amount.

As described above, in this embodiment, the manipulated variable table 76, the low frequency pulse data 77, and the fuzzy inference rule 86 are stored in the ROM 75. Then, the boosting unit 8 set based on the operation amount table 76
The operation amount to 0 is obtained based on the cycle TP of the low frequency pulse. The fuzzy control unit 85 of the CPU 73 detects a control value for controlling the operation amount so that the value of the current flowing through the conductor pair of the electrode pad 82 becomes the target current value target. Fuzzy inference is performed with the rate of change in the current value as one of fuzzy variables.

Therefore, according to the present embodiment, the pulse voltage of the low-frequency pulse is controlled so that the current value flowing through each conductor pair becomes the target current value target (a value that is always constant regardless of the period TP). The control value at this time can be obtained by taking into account the ambiguity taking into account the degree of change in the detected current value.
That is, according to the present embodiment, the detection current value is changed even if the period TP-detection current value characteristic changes due to variations in the characteristics of the human body, the affected area, the adhesive gel used for the electrode, etc., on which the electrode pad 82 is mounted. In the control process to keep it constant,
Overshoots and undershoots that occur can be suppressed. That is, it is possible to remove the discomfort given to the user by the overshoot and the undershoot.

<Fifth Embodiment> The present embodiment relates to a low-frequency therapeutic device for eliminating a frequency-dependent patient-to-patient difference and a conductor-to-conductor difference in the current value flowing through a conductor pair. FIG.
FIG. 2 is a block diagram of the low-frequency treatment device of the present embodiment. The LCD 91, the operation unit 92, the operation amount table 96, and the low-frequency pulse data 97 correspond to L in the second embodiment (FIG. 9).
The CD 31, the operation unit 32, the operation amount table 36, and the low frequency pulse data 37 have the same configuration and operate similarly.

The electrode pad 112 comprises a pad C and a pad D. The pad C is provided with m conductors 113 to 115, while the pad D is provided with m conductors 116 to 118.
Is provided. Then, the low frequency pulse output unit 10
0, booster 104, D / A converter 108, current detector 119
And the A / D converter 123 respectively include n low-frequency pulse output units 101 to 103, boost units 105 to 107, D
/ A conversion means 109-111, current detection means 120-12
2 and A / D conversion means 124 to 126. In addition, the individual low-frequency pulse output means, boost means, D
The / A conversion means, the current detection means and the A / D conversion means are the low frequency pulse output section, the boost section, the D / A converter, the current detection section and the A / D converter in the third and fourth embodiments. It has the same function as.

That is, the output waveform control section 9 of the CPU 93
Reference numeral 9 indicates that a low-frequency pulse is output from the power source of the low-frequency pulse output means 101 to 103 according to a control signal from the control port PB1 to PBn. This low frequency pulse is supplied to the booster 1
The electrode pad 1 is boosted to a predetermined voltage value at
The voltage is applied to the conductors 113 to 115 of the twelve pads C. The boost value at that time is set by the boosting means 105 to 107 based on the operation amount output from the output waveform control unit 99 and D / A converted by the D / A converting means 109 to 111.
On the other hand, A
Pad D A / D converted by A / D conversion means 124 to 126
The detected current value flowing through each of the conductors 116 to 118 is determined by the CPU
The operation amount is sent to the manipulated variable control unit 127 of FIG.

The operation amount control section 127 includes the electrode pad 1
12 so that the current value flowing between the conductor at the pad C and the conductor at the pad D becomes the target current value target.
From the output waveform control unit 99 to the D / A conversion means 109 to 111
To control the amount of operation.

Switches 131 to 135 are provided at the intersections of the output lines from the boosting means 105 to 107 and the input lines to the conductors 113 to 115 of the pad C, and the switches 131 to 135 are turned on / off. Turning off is controlled by a switch control signal from the control ports PA1 to PAm of the output waveform control unit 99. On the other hand, each conductor 11 of the pad D
6 to 118 and each ground line 136 to 1
Switches 139 to 143 are provided at the intersections with 38,
ON / OFF of each of the switches 139 to 143 is controlled by switch control signals from the control ports PO1 to POm of the output waveform control unit 99. In this way, a conductor pair to which the low frequency pulse is applied in the electrode pad 112 is selected.

Switches 144 to 146 are provided on the input lines to the respective D / A converters 109 to 111, and the on / off of the switches 144 to 146 is controlled by the output ports from the control ports PD1 to PDn of the output waveform controller 99. It is controlled by a switch control signal. Thus, the D / A converter 10
The D / A conversion means to which the operation amount in 8 is supplied is selected. Further, switches 147 to 149 are provided at intersections of the input lines to the respective current detecting means 120 to 122 and the ground lines 136 to 138, and the switches 147 to 149 are provided.
To 149 are controlled by switch control signals from the control ports PC1 to PCn of the output waveform control unit 99. In this way, a conductor whose current value in the electrode pad 112 is detected is selected.

In the ROM 95, as shown in FIG. 26, the conductor pair number PAD on the electrode pad 112 is stored. An electrode selection table 98 in which NUM, a positive connection lead number, a negative connection lead number, and connection channels of the A / D converter 108 and the current detection unit 119 are stored. Note that the ROM 9
The low-frequency pulse data 97 stored in FIG.
As shown in the figure, the waveform pattern number, pulse width, cycle TP,
Waveform output period TR, waveform pause period TQ, conductor pair number PAD NU
M is made to correspond.

The RAM 94 also has an output waveform control section 9.
9 is a register DA for storing new / previous manipulated variables output to the D / A conversion means 109 to 111 NEW and register DA OL
D, a register AD for storing new / previous detection current values output from the A / D conversion means 124 to 126 NEW and register AD
OLD is set.

FIG. 27 is a flow chart of the low frequency treatment control processing operation by the CPU 93. Hereinafter, FIG.
Accordingly, the low-frequency treatment control processing operation in the present embodiment will be described in detail.

In step S141, it is determined whether or not the start key of the operation unit 92 has been operated to output a low-frequency pulse. As a result, if a command has been issued, the process proceeds to step S142. In step S142, the output waveform control unit 99 reads the waveform mode information corresponding to the already selected waveform mode from the low frequency pulse data 97 stored in the ROM 95.

In step S143, further, a conductor pair number which is one of the read waveform mode information (see FIG. 26)
, The electrode selection table 98 is pulled, and a positive connection lead number and a negative connection lead number are obtained. Then, the control port PA
A switch control signal is output from 1 to PAm, the corresponding switch is turned on, and the corresponding conductor on the pad C of the electrode pad 112 is connected to the corresponding low frequency pulse output means. Similarly, according to the negative connection conductor number,
A switch control signal is output from the control ports PO1 to POm, the corresponding switch is turned on, and the electrode pad 112 is turned on.
Of the pad D is selected.

In step S144, the electrode selection table 98 is further retrieved based on the conductor pair number, and the D / A
A connection channel for the converter and the current detector is obtained.
Then, according to the connection channel of the D / A converter, switch control signals are output from the control ports PD1 to PDn, the corresponding switches are turned on, and the corresponding D / A converter is operated by the output waveform control unit 99 and the operation amount control unit. 127. In this way, the D / A conversion means to which the operation amount is to be transmitted is selected. In step S145, a switch control signal is output from the control ports PC1 to PCn according to the connection channel of the current detection unit obtained in step S144, and the corresponding switch is turned on.
The corresponding current detecting means is connected to the conductor of the pad D selected in step S143. In this way, a conductor whose current is to be detected is selected.

In step S146, the operation amount table 96 stored in the ROM 95 is read based on the cycle TP which is one of the waveform mode information read out in step S142, and the boosting means in the boosting unit 104 is read. The operation amount for is calculated. Then, the manipulated variable is D / A converted by the D / A conversion means selected in step S144 and sent to the corresponding boosting means in the boosting unit 104. As a result, the voltage of the low frequency pulse from the low frequency pulse output unit 99 is boosted by the boosting means by the boost value determined by the operation amount.

In step S147, a target current value target is set based on the output intensity designated by the output intensity adjustment knob on the operation unit 92. In step S148, FIG.
According to the flowchart shown in FIG. 8, a pulse output control subroutine similar to the pulse output control subroutine in the flowchart of the low frequency treatment control processing operation of the third embodiment is executed. The set of the peak hold circuit executed in step S163 at that time is determined by the A / D connected to the conductor of the pad D in step S145.
This is performed for the peak hold circuit of the conversion means. In step S164 and step S166, the output signal from the control port PB1 to PBn in the output waveform control unit 99 is used to output a low-frequency pulse corresponding to the D / A conversion means selected in step S144 in the main routine. The on signal or the off signal is output to the means.

In steps S149 to S154, the current value can be read (flag AD) in the same manner as in steps S56 to S61 in the flowchart of the low frequency treatment control processing operation of the third embodiment. If FLAG = 1), the value of the current flowing through the pair of conductors is detected, and a current control subroutine similar to the current control subroutine in the third embodiment is executed in accordance with the flowchart of FIG. “0” is set to the flag F indicating the waveform output period TR) and the low-frequency pulse output state, and the low-frequency treatment control operation ends. Step S at that time
The reset of the peak hold circuit executed at 150 is performed on the peak hold circuit of the A / D conversion means connected to the conductor of the pad D. The current control executed in step S151 is based on the detected current value detected by the current detection means connected to the conductor of the pad D and the operation amount to the D / A conversion means selected in step S144. It is performed based on.

As described above, in this embodiment, each of the pads C and D of the electrode pad 112 is provided with m conductors. Also, the low frequency pulse output unit 100,
Each of the booster 104, the D / A converter 108, the current detector 119, and the A / D converter 123 has n low-frequency pulse output units 101 to 103, boosters 105 to 107, D
/ A conversion means 109-111, current detection means 120-12
2 and A / D conversion means 124 to 126 are provided.

The output port control unit 99 in the CPU 93 controls the control ports PA1 to PA1 according to the positive connection terminal numbers and the negative connection terminal numbers corresponding to the waveform patterns obtained by using the electrode selection table 98.
m, and a switch control signal is output from the control ports PO1 to POm, and a low-frequency pulse having a voltage corresponding to the cycle TP is applied from low-frequency pulse output means corresponding to the conductor pair corresponding to the waveform pattern on the electrode pad 112. You.

Further, the control ports PC1 to PC of the output waveform control unit 99 in accordance with the connection channels of the D / A converter and the current detection unit obtained from the electrode selection table 98.
current detecting means for outputting a switch control signal from the control port PD1 and the control ports PD1 to PDn and detecting a current value
And a D / A conversion means for transmitting an operation amount is connected to the output waveform control unit 99 and the operation amount control unit 127. Therefore, a low-frequency pulse can be applied to a pair of conductors corresponding to the waveform mode among the m conductors provided on each of the pad C and the pad D in the electrode pad 112, and the current detection value at that time is changed to the low-frequency pulse. Control can be performed so that the target current value target is obtained for each pair of the conductors to which the pulse is applied.

That is, according to the present embodiment, the difference between the patients and the difference between the pairs of the conductors in the frequency dependence of the current flowing through the pair of the conductors is reduced, and the user's discomfort due to the difference in the intensity of the electric stimulation is reduced. Is removed. Further, since the current flowing through all the pairs of conductors in the electrode pad 112 to which the low-frequency pulse is applied by one waveform mode is made uniform, the affected part on which the electrode pad 112 is mounted can be treated uniformly.

<Sixth Embodiment> This embodiment relates to a low-frequency therapeutic device that executes the current control in the fifth embodiment by fuzzy control. FIG. 30 is a block diagram of the low frequency treatment device of the present embodiment. LCD 151, operation unit 152, operation amount table 156, low frequency pulse data 157, electrode selection table 158, output waveform control unit 15
9, low-frequency pulse output unit 160, booster 164, D / A converter 168, electrode pad 172, current detector 179, A / D converter 183, switches 191-195, switch 196-
200 and switches 201 to 206 are provided in the fifth embodiment.
(FIG. 24) LCD 91, operation unit 92, operation amount table 96, frequency pulse data 97, electrode selection table 98,
An output waveform control unit 99, a low-frequency pulse output unit 100, a boosting unit 104, a D / A converter 108, an electrode pad 112, a current detection unit 119, an A / D converter 123, switches 131 to 135,
Switches 139-143 and 144-149
Operates similarly with the same configuration.

The fuzzy controller 187 in the CPU 153 has basically the same function as the fuzzy controller 85 in the fourth embodiment. That is, the current is detected by the current detecting means 180 to 182 and the A / D converting means 18
At steps 4 to 186, the detected current value obtained by the A / D conversion is taken.
Then, based on each of the detected current values, the output waveform control unit 159 controls the current flowing between the conductor at the pad E of the electrode pad 172 and the conductor at the pad F to the target current value target. To D / A conversion means 16
Fuzzy control of the operation amount to 9 to 171 is performed. The fuzzy inference at that time is performed by the direct method, and the membership function used is as shown in FIG.
The fuzzy variables are the difference DIFF of the detected current value from the current detecting means 180 to 182 with respect to the target current value, and the ratio ΔAD of the change amount of the detected current value to the change amount of the operation amount.

The ROM 155 stores a fuzzy inference rule 18 similar to the fuzzy inference rule 86 in the fourth embodiment.
8 is stored. The RAM 154 has a register DA for storing the new / previous operation amount output from the output waveform control unit 159 to the D / A conversion means 169 to 171. NEW and register DA OLD, a register AD for storing new / previous detected current values output from the A / D conversion means 184 to 186 NE
W and register AD OLD is set.

FIG. 31 is a flowchart of the low-frequency treatment control operation performed by the CPU 153. Hereinafter, FIG.
According to the first embodiment, the low-frequency treatment control processing operation in the present embodiment will be described in detail.

At steps S181 to S190, the waveform mode information is read from the low frequency pulse data 157 in the same manner as at steps S141 to S150 in the flowchart of the low frequency treatment control processing operation of the fifth embodiment. A low-frequency pulse application conductor pair selected by using the selection table 158, a D / A conversion unit to which an operation amount is input,
Current detection means for detecting a current is connected, an operation amount according to the cycle TP to the booster 164 is obtained using the operation amount table 156, a target current value target is set, and the fifth embodiment is performed according to the flowchart shown in FIG. The same pulse output control subroutine as the pulse output control subroutine in the example is executed, and the current value can be read (flag AD FLAG =
If 1), the value of the current flowing through the specified conductor pair is detected.

In step S191, the fuzzy controller 1
The fuzzy control 87 performs fuzzy control according to the flowcharts shown in FIGS. 33 and 34 in the same manner as the fuzzy control subroutine in the fourth embodiment so that the current value flowing through the conductor pair of the electrode pad 172 becomes the target current value target. The subroutine is executed. Note that the fuzzy control at that time is based on the conductor pair number PAD obtained in step S183. Pad F based on NUM
The operation is performed based on the detected current value detected by the current detecting means connected to the conductor of No. 1 and the operation amount of the D / A converting means selected in step S184.

In steps S192 to S194, as in steps S152 to S154 in the flowchart of the low-frequency treatment control processing operation of the fifth embodiment, when the waveform pause period is entered (timer T2> waveform output period TR), “0” is set to the flag F indicating the frequency pulse output state, and the low frequency treatment control processing operation ends.

As described above, in this embodiment, each of the pads E and F of the electrode pad 172 is provided with m conductors. Also, the low frequency pulse output unit 160,
Each of the booster 164, the D / A converter 168, the current detector 179, and the A / D converter 183 has n low-frequency pulse output units 161 to 163, boosters 165 to 167, D
/ A conversion means 169-171, current detection means 180-18
2 and A / D conversion means 184 to 186 are provided.
The output waveform controller 15 in the CPU 153
By means of 9, a low-frequency pulse is applied to a conductor pair corresponding to the waveform pattern among m conductors provided on each of the pad E and the pad F of the electrode pad 172.

The fuzzy inference rule 188 is stored in the ROM 155. Then, the fuzzy control unit 187 of the CPU 153 determines, for each pair of the conductors to which the low-frequency pulse is applied, the operation amount corresponding to the cycle TP to the D / A conversion means 169 to 171 by detecting the detection amount with respect to the change amount of the operation amount. Fuzzy control is performed such that the detected current value becomes the target current value target with the ratio of the amount of change in the value as one of the fuzzy variables.

Therefore, the detected current value is equal to the target current value.
A control value for controlling the operation amount for each pair of conductors so as to be a target (a value that is always constant regardless of the cycle TP) can be obtained by incorporating ambiguity. That is, according to the present embodiment, in the control process for reducing the difference between the patients and the difference between the pairs of conductors in the frequency dependence of the current value flowing through the pair of conductors, the overshoot and the undershoot that occur are suppressed to suppress the overshoot and the overshoot. Discomfort caused by undershoot can be eliminated.

Note that the algorithms of the low frequency treatment control processing operation, the current control subroutine, the pulse output control subroutine, and the fuzzy control subroutine in the present invention are not limited to the above-described flowcharts.

In the above-described embodiment, the target current value target is set by the output intensity adjustment knobs of the operation units 52, 72, 92, 152. However, the method of setting the target current value target is not limited to the above, and a pulse having a long cycle TP such as a waveform in the “hitting” mode is applied to the electrode pad 62, and at that time, a pulse is applied to the conductor pair. The value of the flowing current may be detected by the current detection unit 63, and the detected value may be used as the target current value. Further, the fuzzy inference by the fuzzy control units 85 and 187 in the fourth and sixth embodiments is performed by the direct method, but the present invention is not limited to this. In the fifth and sixth embodiments, the low-frequency pulse output unit, the boosting unit,
Each of the D / A converter, the current detector, and the A / D converter is provided with a plurality of low-frequency pulse output means, a booster, a D / A converter,
It is composed of a current detecting means and an A / D converting means, and a low frequency pulse outputting means, a boosting means, a D / A converting means dedicated to each conductor,
The low frequency pulse output, pulse voltage setting, current detection, etc. are performed by the current detecting means and the A / D converting means. However, the present invention is not limited to this, and each of the low-frequency pulse output unit, the boosting unit, the D / A converter, the current detection unit, and the A / D converter is provided as one low-frequency pulse output unit. , A booster, a D / A converter, a current detector and an A / D converter, and a switch connected to the booster and the current detector may be selected by a switch.

[0123]

As is apparent from the above description, the low-frequency therapeutic device according to the first aspect of the present invention includes a current detecting section, a current value table,
Having a supply current value calculation unit and an output voltage control unit, obtaining a supply current value to be supplied to each conductor pair using the current value table based on the current values of all the conductor pairs, Since the voltage value of the low-frequency pulse applied to each pair of conductors is controlled based on the supplied current value, the width of the current value in each pair of conductors and the width of the current If the current value table is configured in association with the supplied current value, the supplied current value can be controlled in accordance with the difference in the degree of stiffness at the user's wearing site.

A low-frequency therapeutic device according to a second aspect of the present invention includes a current detecting section, a supply current value calculating section, and an output voltage control section, and has a maximum value of the current value for all the conductor pairs. The supply current value supplied to each conductor pair is calculated by averaging the minimum value and the minimum value, and the voltage value of the low-frequency pulse applied to each conductor pair is controlled based on each supply current value. The supply current value can be controlled so that the average current of the current value required for the most stiff part and the current value required for the least stiff part flows through each pair of conductors. Thus, the affected area is treated with a constant current that is appropriate for the user.

A low-frequency therapeutic device according to a third aspect of the present invention has a booster and an output waveform controller, and converts a low-frequency pulse having a waveform corresponding to a waveform pattern into a cycle of the low-frequency pulse. Since the voltage is increased by the operation amount, the frequency dependence of the value of the current flowing through each conductor pair can be corrected. Therefore, even in a waveform mode in which a waveform having a small frequency for “hitting” and a waveform having a large frequency for “rubbing” are mixed, the user does not feel uncomfortable. Furthermore, a current detection unit and an operation amount control unit are provided, and the operation is performed so that the current value between the conductors becomes a target current value based on the change amount of the operation amount and the change amount of the detected current value. Since the amount is controlled, it is possible to eliminate a difference between patients and a difference between wearing parts in frequency dependence of a value of a current flowing through each conductor pair.

The low-frequency therapeutic device according to the fourth aspect of the present invention has a booster and an output waveform controller, like the low-frequency therapeutic device according to the third aspect, and has a low-frequency pulse cycle. Since the low-frequency pulse is boosted by an operation amount according to the above, the frequency dependence of the value of the current flowing through each conductor pair can be corrected.
Furthermore, since it has a current detection unit and a fuzzy control unit and performs fuzzy control of the operation amount so that the current value between the conductors becomes a target current value, a control operation closer to humans with ambiguity added. In addition, it is possible to perform control for eliminating a difference between patients and a difference between wearing parts in a frequency dependence of a value of a current flowing through each pair of conductors.

A low-frequency therapeutic device according to a fifth aspect of the present invention includes a step-up unit, an operation amount table, and an output waveform control unit, and outputs a low-frequency pulse having a waveform corresponding to a waveform pattern to the operation amount table. Since the voltage is boosted by the operation amount corresponding to the cycle of the low frequency pulse obtained by subtraction, the frequency dependency of the current value flowing through each conductor pair can be corrected by a very simple process using the operation amount table. Therefore, no discomfort is given to the user even in the case of treatment using a plurality of patterns of waveforms having different frequencies.

Further, the low-frequency therapeutic device according to the sixth aspect of the present invention includes a booster, an operation amount table, an output waveform controller, a current detector, and an operation amount controller. The amount of operation on the booster is set so as to eliminate the frequency dependence of the current value flowing through each pair of conductors by the very simple processing used, and the frequency dependence of the value of the current flowing through each pair of conductors is reduced. The operation amount can be controlled so as to eliminate a difference between patients and a difference between wearing parts.

Further, the low-frequency therapeutic device according to the seventh aspect of the present invention has a booster, an operation amount table, an output waveform controller, a current detector, and a fuzzy controller. The amount of operation of the booster is set so as to eliminate the frequency dependence of the current value flowing through each pair of conductors by a very simple process, and each of the conductors is controlled by a control operation closer to human beings with ambiguity added. The operation amount can be controlled so as to eliminate the difference between patients and the difference between wearing parts in the frequency dependence of the value of the current flowing through the child pair.

The low-frequency therapeutic device of the invention according to claim 8 includes a booster, a current detector, a conductor selector, an output waveform controller, and an operation amount controller, so that a specified waveform pattern can be obtained. Outputting a low-frequency pulse and a manipulated variable having a waveform corresponding to the waveform pattern to be applied to the selected conductor pair, detecting a current flowing through the selected conductor pair, and changing the manipulated variable The operation amount is controlled such that the current value between the selected conductors becomes a target current value based on the amount and the change amount of the detected current value, and the output low frequency is controlled by the controlled operation amount. Since the pulse is boosted, it is possible to finely correct the difference in the value of the current flowing through each conductor pair between the conductor pairs. Therefore, according to the present invention, it is possible to reduce the intensity of electrical stimulation due to variations in the human body, the mounting site, the electrode characteristics, and the like.

A low-frequency therapeutic device according to a ninth aspect of the present invention has a booster, a current detector, a conductor selector, an output waveform controller, and a fuzzy controller, and responds to a designated waveform pattern. A low-frequency pulse having a waveform corresponding to the waveform pattern to be applied to the selected conductor pair and an operation amount are output, a current flowing through the selected conductor pair is detected, and a detected current value and a target current are output. The fuzzy control of the operation amount so that the current value between the selected conductors becomes the target current value, with the difference from the value and the ratio of the change amount of the detected current value to the change amount of the operation amount as a fuzzy variable, Since the output low-frequency pulse is boosted by the controlled operation amount, the current value flowing through the pair of conductors is controlled by a control operation close to a human in consideration of the operation amount-detected current value characteristic. The difference can be finely corrected. Accordingly, it is possible to suppress overshoot and undershoot generated when controlling the operation amount so that the current value between the conductors becomes the target current value, and to remove discomfort due to overshoot and undershoot.

[Brief description of the drawings]

FIG. 1 is a block diagram of a first embodiment of a low frequency treatment device according to the present invention.

FIG. 2 is an external view of an electrode pad in FIG.

FIG. 3 is a circuit diagram of a current detection unit in FIG.

FIG. 4 is a circuit diagram of an output voltage control unit in FIG. 1;

FIG. 5 is a flowchart of a low-frequency treatment control operation performed by the low-frequency treatment device of FIG. 1;

FIG. 6 is a flowchart of a current control subroutine executed in FIG.

FIG. 7 is a conceptual diagram of a current value table stored in a ROM in FIG. 1;

FIG. 8 is a flowchart of a current control subroutine different from that of FIG. 6;

FIG. 9 is a block diagram of a second embodiment of the low frequency treatment apparatus according to the present invention.

FIG. 10 is a conceptual diagram of an operation amount table stored in a ROM in FIG. 9;

FIG. 11 is a flowchart of a low-frequency treatment control processing operation executed by the low-frequency treatment device of FIG. 9;

FIG. 12 is a flowchart of a pulse output control subroutine executed in FIG. 11;

FIG. 13 is a block diagram of a third embodiment of the low frequency treatment apparatus according to the present invention.

FIG. 14 is a flowchart of a low-frequency treatment control operation performed by the low-frequency treatment device of FIG. 13;

FIG. 15 is a flowchart of a pulse output control subroutine executed in FIG.

FIG. 16 is a diagram showing an applied voltage-detection current characteristic.

FIG. 17 is a flowchart of a current control subroutine executed in FIG.

FIG. 18 is a block diagram of a fourth embodiment of the low-frequency treatment device according to the present invention.

FIG. 19 is a diagram showing a membership function used in the fuzzy controller in FIG. 18;

FIG. 20 is a flowchart of a low-frequency treatment control operation performed by the low-frequency treatment device of FIG. 18;

21 is a flowchart of a pulse output control subroutine executed in FIG.

FIG. 22 is a flowchart of a fuzzy control subroutine executed in FIG.

FIG. 23 is a flowchart of a fuzzy control subroutine continued from FIG. 22.

FIG. 24 is a block diagram of a fifth embodiment of the low-frequency treatment device of the present invention.

25 is a conceptual diagram of low-frequency pulse data stored in a ROM in FIG.

26 is a conceptual diagram of an electrode selection table stored in a ROM in FIG.

FIG. 27 is a flowchart of a low-frequency treatment control operation performed by the low-frequency treatment device of FIG. 24;

FIG. 28 is a flowchart of a pulse output control subroutine executed in FIG. 27;

FIG. 29 is a flowchart of a current control subroutine executed in FIG. 27.

FIG. 30 is a block diagram of a sixth embodiment of the low frequency treatment apparatus according to the present invention.

FIG. 31 is a flowchart of a low-frequency treatment control processing operation performed by the low-frequency treatment device of FIG. 30;

FIG. 32 is a flowchart of a pulse output control subroutine executed in FIG. 31;

FIG. 33 is a flowchart of a fuzzy control subroutine executed in FIG. 31.

FIG. 34 is a flowchart of a fuzzy control subroutine continued from FIG. 33.

FIG. 35 is an external view of a low-frequency treatment device having two pairs of electrodes.

FIG. 36 is an external view of an electrode pad of a low-frequency treatment device having a plurality of pairs of electrodes.

[Explanation of symbols]

1,31,51,71,91,151 ... LCD, 3,33,53,73,93,153 ... CPU, 5,35,55,75,95,155 ... ROM, 6,38,58,78, 99,159: output waveform control unit, 7, 39, 59, 79, 100, 160: low-frequency pulse output unit, 8, 40, 60, 80, 104, 164: boost unit, 10, 42, 62, 82, 112,172 ... electrode pad, 12 ... output voltage controller, 13,63,83,119,179 ... current detector, 15 ... supply current value calculator, 16 ... current value table, 36,56,76,96, 156: operation amount table, 37, 57, 77, 97, 157: low frequency pulse data, 65, 127: operation amount control unit, 85, 187: fuzzy control unit, 86, 188: fuzzy inference rule, 98, 158 ... Electrode selection table, (A-1) to (A-5), (B-1) to (B-5)...

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-1-249069 (JP, A) JP-A-3-60676 (JP, A) JP-A-4-132566 (JP, A) 7170 (JP, A) JP-A-5-92045 (JP, A) JP-A-3-277383 (JP, A) JP-A-3-9766 (JP, A) JP-A-2-291872 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) A61N 1/32

Claims (9)

(57) [Claims] 1. A low-frequency treatment device for applying a low-frequency pulse output from a low-frequency pulse output section to at least two pairs of conductors mounted on a human body to treat stiffness and pain in the human body. A current detection unit for detecting a current flowing through the conductor pair to which the pulse is applied; a current value stored in the storage unit and a width of a current value detected from all the conductor pairs and a current to be supplied to each conductor pair A current value table in which values are associated with each other, and a current value relating to all the conductor pairs from the current detection unit is received, and the current value table is drawn based on the current value,
A supply current value calculation unit for calculating a current value to be supplied to each of the conductor pairs, and an application to each of the conductor pairs from the low frequency pulse output unit based on each of the supply current values obtained by the supply current value calculation unit. A low-frequency treatment device comprising an output voltage control unit for controlling a voltage value of a low-frequency pulse to be applied. 2. A low-frequency treatment device for treating stiffness and pain of a human body by applying a low-frequency pulse output from a low-frequency pulse output unit to at least two pairs of conductors mounted on the human body. A current detection unit that detects a current flowing through the pair of conductors to which the pulse is applied; receiving a current value related to all the pair of conductors from the current detection unit, and determining a current value to be supplied to each pair of conductors A supply current value calculation unit that averages a maximum value and a minimum value of the current values from the current detection unit; and the low-frequency pulse output unit based on the supply current value obtained by the supply current value calculation unit. A low-frequency treatment device comprising an output voltage control unit for controlling a voltage value of a low-frequency pulse applied to each of the pairs of conductors. 3. A low-frequency treatment device for treating a stiffness or pain of a human body by applying a low-frequency pulse output from a low-frequency pulse output unit to at least one pair of conductors mounted on the human body. A booster that boosts the frequency pulse to a voltage value corresponding to the manipulated variable; and controls the low-frequency pulse output unit to send a low-frequency pulse corresponding to the waveform pattern to the booster and a cycle of the low-frequency pulse. An output waveform control unit that outputs the manipulated variable according to and sets the voltage of the low-frequency pulse to the boosting unit; a current detection unit that detects a current flowing through a pair of conductors to which the low-frequency pulse is applied; Upon receiving the detected current value from the current detector, the output waveform control is performed based on the change amount of the operation amount and the change amount of the detected current value so that the current value between the conductors becomes a target current value. Controls the amount of operation from the Low-frequency electric therapy apparatus, characterized in that it includes an operation amount control unit. 4. A low-frequency treatment device for treating a stiffness or pain of a human body by applying a low-frequency pulse output from a low-frequency pulse output unit to at least one pair of conductors mounted on the human body. A booster that boosts the frequency pulse to a voltage value corresponding to the manipulated variable; and controls the low-frequency pulse output unit to send a low-frequency pulse corresponding to the waveform pattern to the booster and a cycle of the low-frequency pulse. An output waveform control unit that outputs the manipulated variable according to and sets the voltage of the low-frequency pulse to the boosting unit; a current detection unit that detects a current flowing through a pair of conductors to which the low-frequency pulse is applied; A fuzzy control unit that receives a detection current value from the current detection unit and fuzzy controls an operation amount from the output waveform control unit so that a current value between the conductors becomes a target current value. And low lap Therapy equipment. 5. A low-frequency therapeutic device for treating a stiffness or pain of a human body by applying a low-frequency pulse output from a low-frequency pulse output unit to at least one pair of conductors mounted on the human body. A booster for boosting the frequency pulse to a voltage value corresponding to the operation amount; an operation amount table stored in the storage unit and associated with the cycle of the low frequency pulse and the operation amount of the booster; The control unit controls the frequency pulse output unit to output a low-frequency pulse having a waveform corresponding to the waveform pattern, obtains the operation amount corresponding to the cycle of the low-frequency pulse using the operation amount table, and transmits the operation amount to the boosting unit. A low-frequency therapeutic device comprising an output waveform control unit for setting the voltage of the low-frequency pulse. 6. The low-frequency therapeutic device according to claim 5, wherein a current detecting unit for detecting a current flowing through the pair of conductors to which the low-frequency pulse is applied, and a detecting current value received from the current detecting unit. An operation amount control unit that controls an operation amount from the output waveform control unit based on the change amount of the operation amount and the change amount of the detected current value such that a current value between the conductors becomes a target current value. A low-frequency treatment device comprising: 7. The low-frequency treatment device according to claim 5, wherein a current detection unit that detects a current flowing through the pair of conductors to which the low-frequency pulse is applied, and a detection current value received from the current detection unit. The difference between the detected current value and the target current value and the ratio of the change amount of the detected current value to the change amount of the manipulated variable are used as fuzzy variables, and the output waveform control is performed so that the current value between the leads becomes the target current value. A low-frequency treatment device comprising a fuzzy control unit for fuzzy controlling an operation amount from the unit. 8. A low-frequency treatment device for treating a stiffness or pain of a human body by applying a low-frequency pulse output from a low-frequency pulse output unit to a plurality of pairs of conductors mounted on the human body. A booster that boosts the pulse to a voltage value according to the manipulated variable; a current detector that detects a current flowing through the pair of conductors to which the low-frequency pulse is applied; and a low-frequency pulse according to a specified waveform pattern. Is selected and a conductor pair from which a current is detected is selected.
A conductor selecting unit that connects one of the conductors of the selected conductor pair to the low-frequency pulse output unit via a boosting unit, and connects the other conductor to the current detection unit; An output waveform control unit that controls a pulse output unit to send a low-frequency pulse having a waveform corresponding to a waveform pattern to the boosting unit, and outputs the operation amount to set the voltage of the low-frequency pulse to the boosting unit. Receiving the detected current value from the current detection unit, based on the change amount of the operation amount and the change amount of the detected current value, so that the current value between the selected conductors becomes the target current value. A low-frequency treatment device, further comprising an operation amount control unit for controlling an operation amount from the output waveform control unit. 9. A low-frequency therapeutic device for treating stiffness and pain in a human body by applying a low-frequency pulse output from a low-frequency pulse output unit to a plurality of pairs of conductors mounted on the human body, A booster that boosts the pulse to a voltage value according to the manipulated variable; a current detector that detects a current flowing through the pair of conductors to which the low-frequency pulse is applied; and a low-frequency pulse according to a specified waveform pattern. Is selected and a conductor pair from which a current is detected is selected.
A conductor selecting unit that connects one of the conductors of the selected conductor pair to the low-frequency pulse output unit via a boosting unit, and connects the other conductor to the current detection unit; An output waveform control unit that controls a pulse output unit to send a low-frequency pulse having a waveform corresponding to a waveform pattern to the boosting unit, and outputs the operation amount to set the voltage of the low-frequency pulse to the boosting unit. Receiving the detection current value from the current detection unit, and using the difference between the detection current value and the target current value and the ratio of the change amount of the detection current value to the change amount of the operation amount as a fuzzy variable, A low-frequency therapeutic device comprising a fuzzy control unit for fuzzy controlling an operation amount from the output waveform control unit so that a current value between the daughters becomes a target current value.