JP2024023729A - electrical stimulation device - Google Patents

Abstract

[Problem] Report information on the motor function of the paralyzed area detected when the patient moves the paralyzed area before the start of treatment and after the end of treatment, and confirm the degree of motor function improvement due to treatment by comparing this information To provide a possible electrical stimulation device. [Solution] Information regarding the motor function of the paralyzed region detected when the patient moves the paralyzed region before the start of treatment and after the end of treatment is reported by a motor function detection means, an electrical stimulation means, and a motor function detection means. This is an electrical stimulation device equipped with a notification means. [Selection diagram] Figure 9

Description

The present invention relates to an electrical stimulation device.

2. Description of the Related Art Electrical stimulation devices that apply electrical stimulation to nerves and muscle groups to relieve pain and improve muscle atrophy have been known. The electrical stimulation device described in Patent Document 1 detects a myoelectric signal from a paralyzed region or a myoelectric signal from a region other than the paralyzed region, and applies electrical stimulation to the paralyzed region based on the detected myoelectric signal. perform motor function training for the paralyzed area. Furthermore, the treatment history (treatment time, number of outputs, stimulation time) of each of the parent device and child device can be displayed and confirmed on the parent device.

Patent No. 5920910

However, with the electrical stimulation device described in Patent Document 1, it is not possible to report information (e.g. myoelectric level) regarding the motor function of the paralyzed area detected before and after treatment, and it is not possible to report the degree of motor function improvement due to treatment. Couldn't confirm.
The present invention has been made to solve these problems, and provides electrical stimulation that notifies information regarding the motor function of the paralyzed area detected before and after treatment, and allows confirmation of the degree of improvement in motor function due to treatment. The purpose is to provide equipment.

In order to achieve the above object, the present invention provides a motor function detection means for detecting the motor function of a paralyzed region of a patient, an electrical stimulation means for applying an electric current to the paralyzed region of the patient, and a motor function detecting means for detecting the motor function of a paralyzed region of a patient. An electrical stimulation device characterized by comprising: a notification device that notifies information regarding the motor function detected when the patient moves the paralyzed region before the start of treatment and after the end of the treatment by the detection device. be. According to this, it is possible to confirm the degree of improvement in motor function due to treatment.

Further, it is preferable that it is possible to select whether or not to store information regarding the motor function before and after the treatment as a treatment condition. According to this, it is possible to confirm the degree of improvement in motor function due to treatment.

Further, it is preferable that the motor function detecting means is a myoelectric potential detecting means for detecting a myoelectric potential of the paralyzed region, and the information regarding the motor function is a myoelectric level obtained from the myoelectric potential of the paralyzed region. According to this, it is possible to confirm the degree of improvement in motor function due to treatment.

Further, the motor function detection means is a means for detecting a movement amount of a joint related to the paralyzed region or a muscle strength value of the paralysis region, and the information regarding the motor function may be the movement amount or the muscle strength value. preferable. According to this, it is possible to confirm the degree of improvement in motor function due to treatment.

According to the present invention, it is possible to provide an electrical stimulation device that notifies information regarding the motor function of a paralyzed region detected before and after treatment, and allows confirmation of the degree of improvement in motor function due to treatment.

FIG. 1 is a plan view of an electrical stimulation device according to Embodiment 1 of the present invention. FIG. 2 is a block diagram showing the electrical configuration of the electrical stimulation device. It is a figure which shows the setting screen of a treatment condition. FIG. 3 is a diagram showing a screen for setting myoelectric sensitivity using the electrical stimulation device. (a) is a diagram showing a selection screen for displaying the average value of myoelectric potentials before and after treatment, and (b) is a diagram showing a setting screen for the measurement time of myoelectric potentials to be performed before and after treatment. FIG. 3 is a diagram showing an example of displaying myoelectric potential, current, etc. during treatment in the electrical stimulation device. FIG. 3 is a diagram showing a screen for setting myoelectric sensitivity during treatment. (a) and (b) are diagrams showing screens when detecting myoelectric potential before and after treatment, respectively. FIG. 3 is a diagram showing an example of displaying the average value of myoelectric potentials before and after treatment. It is a figure which shows an example which displays the treatment history in the same electrical stimulation device. FIG. 7 is a diagram illustrating an example of displaying a myoelectric potential of a paralyzed region under treatment, a target myoelectric potential, and a current in the electrical stimulation device according to Embodiment 2 of the present invention. FIG. 7 is a diagram showing an example of displaying myoelectric potentials of a paralyzed region under treatment, myoelectric potentials of a healthy region, and currents in the electrical stimulation device according to Embodiment 3 of the present invention.

EMBODIMENT OF THE INVENTION Hereinafter, the electric stimulation device based on Embodiment 1 of this invention is demonstrated with reference to drawings.

(Embodiment 1)
As shown in FIG. 1, an electrical stimulation device 1 according to Embodiment 1 of the present invention includes a device main body 2 in which an electrical circuit for outputting electrical stimulation is provided, and a skin surface of a paralyzed region of a patient. a dual-purpose electrode 3 that is placed in the area to detect myoelectric potential and apply electrical stimulation; an electrode cable 4 that connects the dual-purpose electrode 3 to the device body 2; A myoelectric electrode 5 that is placed on the surface and detects myoelectric potential, an electrode cable 6 that connects the myoelectric electrode 5 to the device main body 2, and a tablet (notification means) that can send and receive information between the device main body 2. 7, and a wireless dongle 8 is externally attached to the main body 2 of the device.

The dual-use electrode 3 is composed of a bipolar electrode 9 in which two electrodes 9a and 9b are integrated, and one electrode 10, and each electrode has a back side that is attached to the skin surface of the patient. It is a hook-type gel electrode with a flat surface. Each hook of the electrode 9a, electrode 9b, and electrode 10 is hooked to each tip side of the electrode cable 4 that branches into three at a midway position, and the connection plug 4a on the base end side of the electrode cable 4 is attached to the upper side of the device main body 2. It is removably inserted into the first output connector 11 provided in the. The myoelectric electrode 5 is a bipolar electrode in which two electrodes, an electrode 5a and an electrode 5b, are integrated. Each hook of the electrodes 5a and 5b is hooked to the distal end side of an electrode cable 6 that branches into two at a midway position, and the connection plug 6a on the base end side of the electrode cable 6 is attached to a hook provided on the upper side of the device main body 2. It is detachably inserted into the secondary output connector 12.

The electrodes 9a and 9b are placed on the skin surface of the muscle belly of the target muscle, and detect the weak myoelectric potential generated from the muscle activity of the patient between the electrodes 9a and 9b, and apply electrical stimulation. It functions as an electrode for electrical stimulation. The electrode 10 is placed on the skin surface of the muscle belly of the muscle to which electrical stimulation is to be applied, and functions as an electrical stimulation electrode for applying electrical stimulation to the muscle. The electrodes 5a and 5b are placed on the skin surface of the muscle belly of the target muscle, and the weak myoelectric potential generated from the muscle activity of the patient is detected between the electrodes 5a and 5b.

As shown in FIG. 2, the device main body 2 includes an operation switch section 13, a liquid crystal display section 14, an LED display section 15, and a storage section 16 made of a non-volatile memory (EEPROM) that readably stores treatment conditions, treatment results, etc. , an electrical stimulation means 17, a control unit 18 consisting of a microcomputer, a communication circuit 19 for transmitting and receiving treatment conditions and treatment history information to and from the tablet 7, myoelectric potential detection circuits (myoelectric potential detection means) 20, 21, etc. .

The LED display section 15 has five LEDs arranged horizontally at equal intervals near the upper side of the liquid crystal display section 14, and the LEDs are turned on according to the intensity of the detected myoelectric potential, and the level of the intensity of the myoelectric potential is determined. This is a myoelectric potential level LED that visually informs the therapist and the patient of the presence of the myoelectric potential. The intensity of myoelectric potential is divided into six sections ranging from zero to the maximum value, and when the intensity of myoelectric potential belongs to the lowest intensity category, the five LEDs do not light up at all, and the intensity of myoelectric potential increases. If it belongs to the next section, only one LED on the left lights up (level 1), and if it belongs to the next section, a total of two LEDs from the left end light up (level 2). Thereafter, a total of 3 to 5 LEDs are lit (levels 3 to 5) depending on the section to which the myoelectric potential belongs.

For example, when classifying the strength of myoelectric potential into six levels ranging from zero to 100%, level 1 is when myoelectric potential is 16.6% or more and less than 33.3%, and level 2 is when it is 33.3% or more and less than 50%. 50% or more and less than 66.6% is level 3, 66.6% or more and less than 83.3% is level 4, and 83.3% or more is level 5. In this way, a plurality of level values (five in this example) regarding myoelectric potential are set.

The electrical stimulation means 17 includes a battery power source 22, an output control circuit 23 that controls the voltage input from the battery power source 22, an output transformer 24 that boosts the output voltage from the output control circuit 23, and detects an output current from the output transformer 24. The current detection circuit 25 includes a current detection circuit 25. The output current signal detected by the current detection circuit 25 is input to the control section 18, and the control section 18 controls the output control circuit 23. The output current from the output transformer 24 is output to the dual-purpose electrode 3 via the first output connector 11.

The battery power source 22 can be configured using an alkaline dry battery, a lithium ion secondary battery, or the like. Further, a battery voltage detection circuit 26 for detecting the voltage value of the battery power supply 22 and a power supply circuit 27 for supplying control power to the control section 18 are provided. When the battery voltage detection circuit 26 detects that the voltage value of the battery power source 22 has decreased to the first threshold value, the control unit 18 displays an image of the decrease in the voltage value on the liquid crystal display unit 14 to inform the therapist, etc. inform. Further, when the voltage value of the battery power source 22 reaches a second threshold value, which is a voltage value lower than the first threshold value, the control unit 18 turns off the power to the device main body 2.

The device body 2 and the tablet 7 can communicate wirelessly using Bluetooth (registered trademark), Wi-Fi (registered trademark), wireless LAN, or the like. The device main body 2 is provided with a communication circuit 19 as an information communication means, and the communication circuit 19 is connected to a signal input/output section 28 formed at the center of the right side of the device main body 2. The device body 2 is capable of transmitting and receiving information to and from the tablet 7 via the wireless dongle 8 connected to the signal input/output unit 28, and receives treatment conditions from the tablet 7 and stores them in the storage unit 16. It is possible to transmit the treatment history information stored in the storage unit 16 to the tablet 7.

Next, a case where the dual-purpose electrode 3 is used will be described regarding the configuration of myoelectric potential detection. A bidirectional square wave with a predetermined frequency (20 Hz in the specific example) and a predetermined pulse width (50 μs in the specific example) is repeatedly output from the output transformer 24 between the bipolar electrode 9 and the electrode 10, with three times as one unit. During this repetition (8 ms in the specific example), the myoelectric potential is detected between the electrodes 9a and 9b. The myoelectric potential detected between the electrodes 9a and 9b is input to the myoelectric potential detection circuit 20, amplified by an amplifier (not shown), etc. to a level that can be recognized by the control section 18, and then taken into the control section 18. The control unit 18 performs signal processing to calculate the myoelectric potential, and controls the output control circuit 23 so that, for example, the output intensity of the next electrical stimulation is in accordance with the intensity of the calculated myoelectric potential. As a result, an output current flows between the bipolar electrode 9 and the electrode 10, and electrical stimulation is applied to the paralyzed region. The output of electrical stimulation according to the intensity of the myoelectric potential is limited to the maximum output set by the evening bullet 7, and no more output is applied, and the myoelectric potential is detected by the myoelectric potential detection circuit 20. Even if this is not done, the minimum output electrical stimulation set on the tablet 7 will always be applied. Further, the myoelectric potential detection sensitivity (myoelectric sensitivity) can be set using the tablet 7.

The electrical stimulation device 1 has a first treatment mode and a second treatment mode as treatment modes. In the first treatment mode, as described above, an output current (electrical stimulation) with an intensity corresponding to the myoelectric potential detected from the paralyzed region of the patient is applied from the electrical stimulation means 17 to the paralyzed region for treatment. mode. The second treatment mode is a mode in which an output current with an intensity corresponding to the myoelectric potential detected from the healthy region of the patient is applied from the electrical stimulation means 17 to the paralyzed region. When performing treatment in the first treatment mode, only the dual-purpose electrode 3 is used and the myoelectric electrode 5 does not need to be used, so the myoelectric electrode 5 is not connected to the device main body 2. When performing treatment in the second treatment mode, the dual purpose electrode 3 and the myoelectric electrode 5 are used.

Next, an example will be described in which the electric stimulation device 1 is used to treat a patient who has a disability in dorsiflexion of the wrist joint or extension of the fingers in the first treatment mode. The therapist places the electrodes 9a and 9b (bipolar electrode 9) of the bipolar electrode 3 on the muscle bellies of the wrist dorsiflexor muscles and finger extensor muscles of the forearm, which are the paralyzed areas of the patient to be treated. Electrodes 10 are pasted near one end (on the wrist side) of the muscle bellies of the wrist dorsiflexor muscles and the finger extensor muscles of the forearm of the patient. The therapist sets treatment conditions such as treatment time, minimum and maximum output of electrical stimulation, and myoelectric sensitivity. In addition, when the treatment conditions are stored in advance in the storage unit 16, the treatment conditions may be read from the storage unit 16, and the stored treatment conditions may be changed and set as necessary.

Explain how a therapist sets treatment conditions. FIG. 3 shows a screen of the tablet 7 when setting treatment conditions, and is a screen that is displayed when a target patient is selected from a saved patient list screen (not shown). If you touch "Back" at the bottom left of the screen, a list of saved patients will be displayed. As shown in FIG. 3, the treatment conditions of the patient stored in the storage unit 16 are read out and displayed, and if the patient is a new patient and the treatment conditions are not stored in the storage unit 16, , the treatment conditions are not displayed and are blank. When modifying or newly setting treatment conditions, the treatment conditions can be set by touching a portion of the area 61 that corresponds to the treatment conditions to be set. After setting the treatment conditions, by touching "Send" at the bottom right of the screen in FIG. 3, the set treatment conditions are transmitted from the tablet 7 to the main body 2 of the apparatus.

Here, a method of setting the myoelectric sensitivity using the device main body 2 will be explained. When the area 62 of the screen shown in FIG. 3 is touched, the screen shown in FIG. 4 is displayed on the tablet 7. Therefore, touch "+" or "-" on the screen so that all five myoelectric potential level LEDs on the LED display section 15 light up when you put effort into your forearm, and all five myoelectric potential level LEDs turn off when you relax. Adjust by increasing or decreasing myoelectric sensitivity. If all the myoelectric potential level LEDs do not light up even when you apply strong force, adjust the myoelectric sensitivity to be high.On the other hand, if all the myoelectric potential level LEDs do not turn off even when you relax, the myoelectric sensitivity becomes low. You can make adjustments accordingly. When the adjustment of the myoelectric sensitivity is completed and "OK" is touched on the screen, the myoelectric sensitivity is set and the screen returns to the screen shown in FIG. 3. The reason why the myoelectric sensitivity is adjusted so that all the myoelectric potential level LEDs are turned off when the muscle becomes weak is because if noise enters the myoelectric potential detection circuit 20, the myoelectric potential level will be turned off even though no myoelectric potential is emitted from the muscle. This is because it may be mistakenly recognized that a potential has been detected, and unexpected electrical stimulation may be output.

Furthermore, when a portion of the area 61 in FIG. 3 corresponding to the treatment condition item "memorize myoelectricity before and after treatment" is touched, the screen in FIG. 5(a) is displayed. If you touch the "Yes" part on the screen in Figure 5(a), the screen in Figure 5(b) will be displayed, so touch "+" or "-" on the screen to measure the time to be measured before and after treatment. Adjust by increasing or decreasing. When the adjustment is completed and you touch "Confirm", the screen returns to the screen shown in FIG. 3, and the set measurement time is displayed in parentheses to the right of the item "Memorize myoelectricity before and after treatment." If "No" is touched on the screen of FIG. 5(a), the screen returns to the screen of FIG. 3, and "No" is displayed to the right of the item "Memorize myoelectricity before and after treatment." The operation of the electrical stimulation device 1 when the "Yes" part is touched on the screen of FIG. 5(a) will be described later.

When the treatment is started after setting the treatment conditions and force is applied to the forearm, the myoelectric potential detected between the electrodes 9a and 9b is input to the myoelectric potential detection circuit 20, and the control unit 18 calculates the myoelectric potential. Then, an output current corresponding to the intensity flows between the bipolar electrode 9 and the electrode 10, and electrical stimulation is applied to the wrist dorsiflexor muscles and the finger extensor muscles. The application of this electrical stimulation promotes muscle contraction of the wrist dorsiflexion muscles and the finger extensor muscles, and as a result, the patient is forced to dorsiflexion of the wrist and extension of the fingers. Joint motor function training can be performed. When the set treatment time has elapsed, the output of electrical stimulation will automatically stop, thus ending the treatment.

As described above, the myoelectric potential detected during the treatment is divided into six intervals, and five levels 1 to 5 are set depending on the intensity of the myoelectric potential. The number of times the myoelectric potential detected during treatment reaches each of levels 1 to 5 (number of times achieved) is counted, and the number of times achieved for each level is stored in the storage unit 16.

FIG. 6 shows an example of a screen displayed on the tablet 7 during treatment. A waveform 71 displayed in the waveform display area 70 represents the myoelectric potential of the paralyzed area under treatment, and a waveform 72 represents the current for applying electrical stimulation to the patient. Myoelectric potential and current scales are shown on the left and right sides of the waveform display area 70, respectively. The horizontal axis is time, and the right end of the horizontal axis represents the current time at the time of treatment. The label on the horizontal axis indicates the time from the start of the treatment in minutes and seconds; for example, "0:20" represents the time point when 0 minutes and 20 seconds have passed since the start of the treatment.

In the leftmost area of the screen, the minimum output (%), maximum output (%), and myoelectric sensitivity set as treatment conditions are displayed, and the current myoelectric potential and current during treatment are displayed as myoelectric detection (%) and myoelectric sensitivity. It is displayed as a current value (mA). The minimum output and maximum output are the minimum output and maximum output that limit the output of electrical stimulation as described above. Further, in an area 73 on the left side of the waveform display area 70, the myoelectric potential at the time of treatment is displayed as a bar graph every 10%. In the bar graph, the current myoelectric potential at the time of treatment is displayed by changing the color of the diagonally shaded area from 0 to 20%, corresponding to the display of myoelectric detection of 14%. In this way, it is possible to check the myoelectric potential and current over the course of the treatment using the waveform 71 and the waveform 72. In addition, the myoelectric potential of the paralyzed area at the time of treatment can be confirmed in a bar graph and numerical value, and the current current at the time of treatment can be confirmed in numerical value.

As shown in FIG. 6, the myoelectric potential and current during treatment are displayed on the tablet 7, and the correlation between the current and myoelectric potential during treatment can be confirmed. Therefore, a therapist such as a doctor or physical therapist can take measures according to the confirmation results, such as changing treatment conditions during treatment. For example, if we check the correlation between current and myoelectric potential and determine that the output of electrical stimulation during treatment is weak, we will adjust the output and myoelectric sensitivity to be high, and If it is determined that this is strong, the output and myoelectric sensitivity may be adjusted to be lower. Note that the myoelectric potential of the paralyzed region is an example of information regarding the motor function of the paralyzed region, and the current is an example of predetermined information. Further, the myoelectric potential detection means is an example of a motor function detection means for detecting the motor function of a paralyzed region.

For example, by touching "Back" displayed at the bottom left of FIG. 6, the screen shown in FIG. 3 will be displayed, and if you touch the part corresponding to the myoelectric sensitivity in the area 61, the screen shown in FIG. 7 will be displayed. be done. Touch "+" or "-" on the screen to increase or decrease myoelectric sensitivity. For example, the myoelectric sensitivity can be changed at intervals of 0.1. On the screen in Figure 7, the myoelectric sensitivity is surrounded by a square so that the treatment conditions being changed can be seen, but even if the sensitivity can be recognized in other ways, such as by changing the color of the text or making the text thicker, good. When the adjustment is completed and you touch "Confirm" on the screen, the screen returns to the screen shown in Figure 3. By touching "Send" at the bottom right of the screen, the changed myoelectric sensitivity is sent to the device main body 2, and the myoelectric sensitivity is changed during treatment. Electricity sensitivity can be adjusted.

Here, an acceleration sensor or the like may be used to detect the amount of movement of the joint related to the paralyzed area, and the detected amount of movement may be displayed instead of the myoelectric potential. That is, the amount of movement of the joint and the current during treatment may be displayed on the tablet 7. Further, the myoelectric potential, joint movement amount, and current during treatment may be displayed on the tablet 7. Alternatively, the muscle strength value of the paralyzed region may be detected using a muscle strength meter, and the detected muscle strength value may be displayed instead of the myoelectric potential. That is, the muscle strength value and current during treatment may be displayed on the tablet 7. Further, the myoelectric potential, muscle strength value, and current during treatment may be displayed on the tablet 7. Note that the amount of movement of a joint related to a paralyzed region and the muscle strength value of a paralyzed region are examples of information regarding the motor function of a paralyzed region, and an acceleration sensor and a muscle strength meter are examples of motor function detection means.

FIGS. 8(a) and 8(b) are examples of screens displayed on the tablet 7 before the start of treatment and after the end of treatment, respectively, when "Yes" is selected on the screen of FIG. 5(a) when setting treatment conditions. It shows. In this case, the myoelectric potential of the paralyzed region is detected when the patient voluntarily moves the paralyzed region for a predetermined period of time (the time set on the screen in Figure 5(b)) before the start of treatment, and the average value is (Myoelectric level before treatment) is determined. After the treatment ends, the myoelectric potentials of the paralyzed area are detected when the patient voluntarily moves the paralyzed area and the average value (post-treatment myoelectric level) is determined in the same manner as before the treatment begins. After the treatment is completed and the myoelectric level after the treatment is calculated, the myoelectric level before the treatment and the myoelectric level after the treatment are displayed as shown in Figure 9. You can check the effect to see if it has improved or not. Note that the myoelectric level is an example of information regarding the motor function of the paralyzed region.

In addition, a predetermined level (%) regarding myoelectric potential is set, and the number of times the myoelectric potential detected by the myoelectric potential detection circuit 20 exceeds the predetermined level during treatment is counted, and the total number of times from the start of the treatment is calculated. is displayed on the tablet 7 during treatment. For example, as shown in FIG. 6, the predetermined level can be displayed as a horizontal line 74 in the bar graph of the area 73, and the total number of times can be displayed in the upper part 75 of the waveform display area 70. If the therapist or the person to be treated knows the total number of times the myoelectric potential exceeded a predetermined level in past treatments, they can receive treatment while comparing the results of past treatments. Further, the above-mentioned total number of times in the past treatment may be stored in the storage unit 16, and the total number of times in the previous treatment may be displayed side by side with the total number of times in the current treatment, for example. Note that the total number of times is an example of information obtained based on the myoelectric potential of the paralyzed region.

Here, instead of confirming the degree of motor function improvement due to treatment by comparing the myoelectric levels before and after treatment, other indicators may be compared. For example, by using an acceleration sensor or the like to detect the amount of movement of the joints involved in the paralyzed area before and after treatment, and by displaying and comparing these detected values, it is possible to confirm the degree of motor function improvement due to treatment. . Furthermore, by detecting the muscle strength value of the paralyzed region before and after treatment using a muscle strength meter, and displaying and comparing the detected values, it is possible to confirm the degree of improvement in motor function due to treatment.

FIG. 10 shows an example of displaying past treatment history, which is displayed based on data of treatment conditions and treatment results stored in the storage unit 16. This treatment history can be confirmed by displaying it on the tablet 7, or by importing the data into a personal computer and displaying or printing it on the monitor. A table 81 of treatment conditions for each treatment day, a table 82 of treatment results, and a graph 83 are displayed, and the display of data during the treatment day is omitted. Table 81 displays treatment conditions such as treatment time (minutes), minimum output (%), maximum output (%), and myoelectric sensitivity. Table 82 displays, as treatment results, the number of times the myoelectric potential detected during the treatment reached each of levels 1 to 5 (achieved number of times) and an index based on the number of times achieved. For each treatment day in graph 83, the rightmost bar graph (bar graph a on March 1st) is the number of times level 1 was achieved, and the leftmost bar graph (bar graph b on March 1st) is the number of times level 5 was achieved. In between, a bar graph of the number of times levels 2 to 4 have been achieved is displayed. In addition, an index based on the number of accomplishments is displayed as a line graph c. Here, as an example of an index based on the number of achievements, (n) x (number of times of achievement of level n) is calculated for each of n=1 to 5, and the sum thereof is used. According to this index, the index increases as the level increases and the number of accomplishments increases.

According to FIG. 10, it is possible to confirm how much the number of times each level is achieved changes as the treatment progresses. Furthermore, by looking at changes in the index, it can be confirmed whether or not the myoelectric potential is improving during treatment. According to the treatment history in Figure 10, the treatment results from March 13th to March 15th increase the number of times each level was achieved compared to the treatment results from March 1st to March 3rd. The index based on the treatment also increased, indicating that the myoelectric potential during treatment improved.

(Embodiment 2)
Embodiment 2 is another embodiment in which treatment is performed in the first treatment mode using the electrical stimulation device 1 described in Embodiment 1. On the tablet 7, the myoelectric potential of the paralyzed area being treated is displayed, and the myoelectric potential of a preset target is displayed. For example, as shown in FIG. 11, a myoelectric potential waveform 91 of a paralyzed area under treatment and a target myoelectric potential waveform (for example, a sine wave) 92 are displayed in one display area of the screen of the tablet 7. . Waveform 93 is a current waveform. In this case, the patient can check on the screen the correlation between the myoelectric potential waveform of the paralyzed area being treated and the target myoelectric potential waveform, so that the myoelectric potential waveform of the paralyzed area approaches the target myoelectric potential waveform. You can train yourself to move the paralyzed area. Additionally, it is possible to check during treatment how close the actual myoelectric potential is to the target myoelectric potential. Here, the target myoelectric potential is an example of predetermined information. Note that the myoelectric potential waveform 91 of the paralyzed region and the target myoelectric potential waveform 92 may be displayed side by side on the top and bottom of the screen. Further, the target myoelectric potential may be stored in the storage unit 16 as data of a basic waveform (sine wave, rectangular wave, etc.), and the data may be displayed. Alternatively, amplitude, frequency, etc. may be input for the basic waveform, and the waveform may be generated and displayed based on the input data. Further, the tablet 7 may be used to allow a therapist or the like to create a waveform by handwriting input.

(Embodiment 3)
Embodiment 3 is an embodiment in which treatment is performed in the second treatment mode using the electrical stimulation device 1 described in Embodiment 1. In addition to placing the dual purpose electrode 3 on the paralyzed area of the patient as in the first treatment mode, in the second treatment mode, the myoelectric electrode 5 is placed on the healthy area of the person being treated. The myoelectric sensitivity is set using the method described above. The myoelectric potential detected between the electrodes 5a and 5b is input to the myoelectric potential detection circuit 21 and taken into the control section 18. The control unit 18 performs signal processing to calculate the myoelectric potential, and controls the output intensity of the next electrical stimulation to be applied to the paralyzed area via the dual electrode 3 to be an output corresponding to the intensity of the calculated myoelectric potential. Controls the output control circuit 23.

The tablet 7 displays the myoelectric potential of the paralyzed region under treatment detected by the dual-purpose electrode 3 and the myoelectric potential of the healthy region under treatment detected by the myoelectric electrode 5. For example, as shown in FIG. 12, a myoelectric potential waveform 94 of a paralyzed region under treatment and a myoelectric potential waveform 95 of a healthy region under treatment are displayed superimposed on one display area of the screen of the tablet 7. Waveform 96 is a current waveform. The patient can check on the screen the correlation between the myoelectric potential of the paralyzed area being treated and the myopotential of the healthy area. You can train it to move. Additionally, it is possible to check during treatment how close the myoelectric potential of the paralyzed area is to that of the healthy area. Here, the myoelectric potential of a healthy region is an example of predetermined information. Note that the myoelectric potential waveform 94 of the paralyzed region and the myoelectric potential waveform 95 of the healthy region may be displayed side by side on the top and bottom of the screen.

(Embodiment 4)
Embodiment 4 is the electrical stimulation device 1 described in Embodiment 1, but has a function of notifying the user with sounds of different scales depending on the strength of the myoelectric potential of the paralyzed area being treated. The sound is emitted from a speaker provided in the tablet 7. As an example, as described in the first embodiment, the intensity of myoelectric potential is divided into six sections, and five levels 1 to 5 are set depending on the intensity of myoelectric potential. The speaker emits the scale C sound when the myoelectric potential reaches level 1, the scale D sound when the myoelectric potential reaches level 2, the scale m sound when the myoelectric potential reaches level 3, and the scale C sound when the myoelectric potential reaches level 4. When the myoelectric potential reaches level 5, it emits the note F of the scale, and when the myoelectric potential reaches level 5, it emits the note G of the scale.

The volume of each scale can be set by the therapist or the patient using the tablet 7. For example, the volume of a scale corresponding to a target myoelectric potential level can be set higher than the volume of a scale corresponding to other levels.

In this way, depending on the level of myoelectric potential in the paralyzed area detected during treatment, the patient is notified by the sound of the musical scale Do to G. For example, when the patient is relaxing, it is effective to lower the muscle tension as much as possible, so it is possible to encourage the patient to make efforts to relax so that the scale becomes lower. If the scale becomes lower, it can be seen that the muscles are relaxing, and the patient can learn how to relax the muscles by using the change in the scale as a clue. Although an example has been described in which the notification is made using the sounds of the scale Do to So, the notification is not limited to the sounds of the scale Do to So, and notification may be made using sounds of other scales.

In the electrical stimulation device described in Patent Document 1, information regarding the motor function of the paralyzed area (e.g. myoelectric potential) and predetermined information (e.g. target myoelectric potential) cannot be reported during treatment, and the correlation between them cannot be reported. could not be confirmed during treatment, but according to the electrical stimulation devices according to Embodiments 1 to 3, information regarding the motor function of the paralyzed area (e.g., myoelectric potential) and predetermined information (e.g., current, target myoelectric potential, The myoelectric potential of healthy areas) can be reported during treatment, and the correlation between them can be confirmed during treatment.

In each of the above embodiments, an example has been described in which the tablet 7 is used as the notification means, but a stationary display or monitor, a portable smartphone, etc. can be used as the notification means. The liquid crystal display section 14 of the device main body 2 may be used as the notification means. The liquid crystal display section 14 may be made large so that the myoelectric potential and current during treatment can be easily confirmed on the main body 2 of the apparatus. Furthermore, although an example has been described in which the treatment conditions are set using the tablet 7, the treatment conditions may also be set using the operation switch section 13 of the device main body 2. The present invention also relates to an electrical stimulation device that can be worn on a patient by reducing the size of the device body 2 and fixing the device body 2 to the patient's arm using a mounting means such as a fixing band. can be applied.

In each of the above embodiments, an electrical stimulation device including one device main body 2 has been described, but the present invention can also be applied to an electrical stimulation device including a plurality of device main bodies 2. In that case, the tablet 7 is capable of wireless communication with each device main body 2, and information on a plurality of device main bodies 2 may be displayed on the tablet 7. For example, a plurality of displays of myoelectric potentials during treatment as shown in FIG. 6 in each device body 2 may be displayed side by side on the screen of the tablet 7. Here, the information on the device main body 2 includes information such as minimum output (%), maximum output (%), treatment mode, treatment time, etc. set as treatment conditions, in addition to information related to motor function and predetermined information. It will be done. In addition, an example has been described in which wireless communication is performed with the tablet 7 via the wireless dongle 8 attached to the device main body 2, but the device main body 2 has a built-in circuit for wireless communication and the tablet 7 It may also be configured to perform wireless communication with.

In the above embodiment, an example has been described in which a patient who has a disability in dorsiflexion of the wrist joint or extension of the fingers is treated. By increasing the maximum output current of the electrical stimulation device 1, the present invention can also be applied to an electrical stimulation device for treating a patient with a lower limb disorder.

Further, in the fourth embodiment, an example has been described in which notification is made by using sounds of different scales depending on the strength of the myoelectric potential of the paralyzed region being treated, but notification may be made by making sounds of different volumes. Alternatively, the notification may be provided by light, for example, light of different colors may be used depending on the intensity of the myoelectric potential of the paralyzed area being treated. Further, the notification may be provided by vibration, and the vibration pattern may be varied, for example, by varying the interval or magnitude of the vibration depending on the strength of the myoelectric potential of the paralyzed area being treated. Furthermore, at least two of the above-mentioned sounds with different scales, sounds with different volumes, lights with different colors, and vibrations with different patterns may be used together.

It can be applied to an electrical stimulation device used when a patient with paralysis in the upper or lower limbs performs functional recovery training for the paralyzed area.

1 Electric stimulation device 2 Device body 3 Dual-purpose electrodes 4, 6 Electrode cable 5 Myoelectric electrode 7 Tablet 8 Wireless dongle 9 Bipolar electrode 10 Electrode 13 Operation switch section 14 Liquid crystal display section 15 LED display section 16 Storage section 17 Electric stimulation means 18 Control unit 19 Communication circuit 20, 21 Myoelectric potential detection circuit 22 Battery power supply 23 Output control circuit 24 Output transformer 25 Current detection circuit 26 Battery voltage detection circuit 27 Power supply circuit 28 Signal input/output unit

Claims (4)

a motor function detection means for detecting the motor function of a paralyzed region of a patient;
electrical stimulation means for applying current to the paralyzed region of the patient;
Notification means for notifying information regarding the motor function detected by the motor function detection means when the patient moves the paralyzed area before the start of treatment and after the end of treatment;
An electrical stimulation device comprising: The electrical stimulation device according to claim 1, wherein it is possible to select whether or not to store information regarding the motor function before and after treatment as a treatment condition. The motor function detection means is a myoelectric potential detection means for detecting myoelectric potential of the paralyzed region,
The electrical stimulation device according to claim 1 or 2, wherein the information regarding the motor function is a myoelectric level obtained from the myoelectric potential of the paralyzed region. The motor function detection means is a means for detecting the amount of movement of a joint related to the paralyzed region or the muscle strength value of the paralyzed region,
The information regarding the motor function is the movement amount or the muscle strength value,
The electrical stimulation device according to claim 1 or 2, characterized in that:

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