CN209809314U - Transcranial electrical stimulation instrument - Google Patents
Transcranial electrical stimulation instrument Download PDFInfo
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- CN209809314U CN209809314U CN201821880754.0U CN201821880754U CN209809314U CN 209809314 U CN209809314 U CN 209809314U CN 201821880754 U CN201821880754 U CN 201821880754U CN 209809314 U CN209809314 U CN 209809314U
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Abstract
The utility model discloses a transcranial electrical stimulation instrument, which comprises a host and electrodes, wherein the host comprises a transcranial electrical stimulation circuit, and the transcranial electrical stimulation circuit comprises a voltage signal generation module, a constant current source module, a waveform acquisition module, an MCU (micro control unit) and a control transceiving module; the voltage signal generation module is connected with the input end of the constant current source module, the output end of the constant current source module is output to an electrode through an electrode wire to act on a load, the input end of the waveform acquisition module is connected with the output end of the constant current source module, and the output end of the waveform acquisition module is connected with the MCU; and the MCU transmits and stores data with the PC end through the control transceiver module. The transcranial electrical stimulation instrument is safe and convenient, monitors and displays stimulation current in real time, and can adjust the current intensity in time.
Description
Technical Field
The utility model relates to a medical equipment especially relates to a transcranial electrical stimulation appearance.
Background
Transcranial Electrical Stimulation (TES) technology is a non-invasive technology for regulating the activity of cerebral cortical nerve cells by using weak current (0.5-2.0 mA). Since the 90 s of the 20 th century, people have conducted extensive research on transcranial electrical stimulation, and with the continuous and deep research on the central nervous system and neuroscience, people have had a deeper understanding on transcranial electrical stimulation, and have also inspired the possibility that transcranial electrical stimulation is applied to the treatment in the fields of different neurological diseases and mental diseases, motor skill learning, brain cognitive ability enhancement and the like, which lay the foundation for further application of the technology in clinic and daily life.
However, the transcranial electrical stimulation instruments on the market cannot feed back the output accuracy of the output current while releasing electrical stimulation, and cannot ensure the accurate control of the output current, which directly affects the stimulation effect and safety of treatment, but operators cannot timely perceive and correct the stimulation.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a transcranial electrical stimulation instrument which can monitor and display output current in real time, and is safe and convenient.
The purpose of the utility model is realized by adopting the following technical scheme:
the transcranial electrical stimulation instrument comprises a host and an electrode, wherein the host comprises a transcranial electrical stimulation circuit, and the transcranial electrical stimulation circuit comprises a voltage signal generating module, a constant current source module, a waveform acquisition module, an MCU (microprogrammed control unit) and a control transceiving module; the voltage signal generation module is connected with the input end of the constant current source module, the output end of the constant current source module is output to an electrode through an electrode wire to act on a load, the input end of the waveform acquisition module is connected with the output end of the constant current source module, and the output end of the waveform acquisition module is connected with the MCU; and the MCU transmits and stores data with the PC end through the control transceiver module.
Furthermore, the transcranial electrical stimulation circuit further comprises a relay protection module arranged at the output end of the constant current source module, the relay protection module outputs weak current to the load, and the output current is increased after the load impedance is stabilized.
Further, the waveform acquisition module comprises a sampling resistor R11 connected with the load in parallel, and the MCU receives the voltage signal of the sampling resistor R11 in real time and converts the voltage signal into a digital signal to monitor and control the current of the load in real time.
Further, the waveform acquisition module further comprises an output impedance monitoring module, the real-time voltage signal of the sampling resistor R11 is converted into a real-time current, and if the real-time current is larger than a limited current, the MCU controls to stop outputting the current.
Further, the voltage signal generating module comprises a direct current voltage signal module and an alternating current voltage signal module, the constant current source module comprises a direct current constant current source module and an alternating current constant current source module, and the waveform collecting module comprises a direct current waveform collecting module and an alternating current waveform collecting module; the direct current voltage signal output by the direct current voltage signal module is converted into current through the direct current constant current source module and is output to the direct current waveform acquisition module; and the alternating current voltage signal output by the alternating current voltage signal module is converted into current through the alternating current constant current source module and is output to the alternating current waveform acquisition module.
Furthermore, the direct current constant current source module and the alternating current constant current source module both comprise a first operational amplifier and a second operational amplifier, the output end of the first operational amplifier is connected with the positive input end of the second operational amplifier, and the output end of the second operational amplifier is connected with the positive input end of the first operational amplifier and a load; the constant current source module adjusts the voltage according to the load size to output a constant current.
Further, the control transceiver module comprises at least one of a mobile communication module, a WIFI module and a bluetooth module.
The device further comprises a multimedia module, wherein the multimedia module comprises a display screen arranged on the outer surface of the host and a buzzer for prompting the state of the transcranial electrical stimulator; the display screen displays the waveform of the transcranial electrical stimulation circuit.
Furthermore, the transcranial electrostimulator also comprises a backlight lamp arranged on the display screen.
Further, the MCU adopts STM32 series chips.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses the constant current source module is sent into to various voltage signal output by integrated circuit production to gather the data of different wave forms and send into MCU by waveform acquisition module, turn into the electric current with voltage signal, by electrode output action in the surveyed person, thereby play the effect of treatment. And a monitoring and control system is arranged in the device, so that the stimulating current can be monitored and accurately controlled in real time and displayed at a PC (personal computer) end. The intensity and the precision of the stimulating current are fed back in real time, an operator can adjust the intensity and the precision at the PC end in time according to the feedback and the actual situation of the tested person in the treatment process, the safety of the stimulating current is ensured, the stimulating effect of treatment is improved, and the safety of the tested person is guaranteed. The utility model is simple in operation, need not professional operating personnel, make things convenient for by survey person's treatment and control.
Drawings
Fig. 1 is a system block diagram of an embodiment of the present invention;
fig. 2 is a circuit structure diagram of a constant current source module according to an embodiment of the present invention;
fig. 3 is a circuit structure diagram of an ac waveform acquisition module according to an embodiment of the present invention;
fig. 4 is a circuit structure diagram of the dc waveform acquisition module according to the embodiment of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.
As shown in fig. 1-4, the utility model provides a transcranial electrical stimulation instrument, which comprises a host and electrodes, wherein the host comprises a transcranial electrical stimulation circuit. Specifically, the transcranial electrical stimulation circuit comprises a voltage signal generating module, a constant current source module, a waveform acquisition module, an MCU and a control transceiving module; the voltage signal generation module is connected with the input end of the constant current source module, the constant current source module can directly act on a load through an electrode wire, and the output end of the constant current source module is connected with the MCU through the waveform acquisition module. In the present invention, the load is specifically the subject.
Because the human load is in change, the system needs to keep constant current output according to requirements, when the electrode is in poor contact, the human load is easy to change to the maximum value, in order to ensure constant current, the transcranial electrical stimulation circuit outputs high voltage, and at the moment, the tested person is easy to be injured. The isolation is made between the tested person and the stimulating circuit, the relay is switched on after the output is stable, and the polarization voltage during the alternating current and direct current switching is successfully eliminated; when the system outputs every time, the weak current is firstly output and gradually increased after the impedance of the tested person is stable, so that the discomfort caused by direct treatment is avoided, the skin is adapted to stimulation by the weak current, the treatment effect is better, the situation that the stimulation current is too large is successfully avoided, and the safety of the tested person is protected.
In this embodiment, the voltage signal generating module includes a dc voltage signal module and an ac voltage signal module, the constant current source module includes a dc constant current source module and an ac constant current source module, and the waveform collecting module includes a dc waveform collecting module and an ac waveform collecting module; the direct current voltage signal output by the direct current voltage signal module is converted into current through the direct current constant current source module and is output to the direct current waveform acquisition module; the alternating current voltage signal output by the alternating current voltage signal module is converted into current through the alternating current constant current source module and is output to the alternating current waveform acquisition module.
The waveform acquisition module is provided with a sampling resistor R11 connected with the load in parallel. Specifically, as shown in fig. 3, which is a circuit structure diagram of the ac waveform acquisition module of this embodiment, the signal output by the ac constant current source is sent to a load, and the load is connected in parallel with the sampling resistor R11. The sampling resistor R11 obtains a corresponding voltage signal, and the voltage signal is converted into a voltage signal which meets the acquisition requirement of an AD converter of the MCU through the operational amplifier U3A and the operational amplifier U3B. Correspondingly, in the circuit structure diagram of the dc waveform acquisition module shown in fig. 4, the resistor R32 is a sampling resistor of the dc waveform acquisition module. The voltage signals of the sampling resistors R11 and R32 are converted into digital signals, the magnitude of output current is monitored in real time, the real-time load of a tested person is measured, and closed-loop control is achieved. Meanwhile, the MCU sends data to the PC end through controlling the transceiver module, and a software interface of the PC end displays the magnitude of current loaded on the tested person, so that doctors and the tested person can conveniently master real-time data during treatment.
In order to further optimize the utility model discloses a security performance, waveform acquisition module still includes output impedance monitoring circuit, and when current overload, MCU will automatic cutout current output, the protection is surveyed person's safety. In this embodiment, the sampling resistor R11 is used for measuring the real-time load of the measured person, the real-time current loaded on the measured person is obtained through conversion, specifically, the upper limit current is set to 4mA according to the current bearing capacity of the measured person, and when the constant current output is greater than 4mA, the system stops outputting, so that the safety of the measured person is protected.
As shown in fig. 2, the circuit structure of the dc constant current source module or the ac constant current source module of this embodiment includes a first operational amplifier U7 and a second operational amplifier U8, an output terminal of the first operational amplifier U7 is connected to an anode input terminal of the second operational amplifier U8, and an output terminal of the second operational amplifier U8 is connected to an anode input terminal of the first operational amplifier U7 and a load; the module can adjust the output voltage of the circuit according to the load, namely the impedance of the body of the tested person, so that the current output is always kept in a constant state, and the output requirement of the transcranial electrical stimulation instrument is met.
Specifically, the utility model discloses a control transceiver module includes mobile communication module, WIFI module, bluetooth module's at least one, can be according to the preferred one or more of actual need. And the PC end transmits and stores data with the MCU through the module. The tested person can set parameters such as current intensity, time, waveform and the like in the PC terminal in advance according to actual needs. More, the method allows editing the information of the tested person and recording the past treatment parameters. The preset current value is allowed to be controlled on a software interface of the PC end in the treatment process, and the intensity of the stimulation current can be timely adjusted according to the feedback of the testee.
The utility model discloses in, MCU is preferably STM32 series singlechip, has advantages such as high performance, low cost, low-power consumption. In the embodiment, the host machine with the white surface and the frosted material is adopted, so that the anti-skid effect is better.
In order to better use the transcranial electric stimulation instrument, the utility model also comprises a multimedia module, which comprises a display screen arranged on the outer surface of the host and a buzzer for prompting the state of the transcranial electric stimulation instrument; the display screen displays the waveform of the transcranial electrical stimulation circuit. The output waveform comprises a direct current waveform, a sine waveform, a sawtooth waveform, a rectangular waveform and a custom waveform. Specifically, the output current range of the direct current waveform is 0-4 mA, the output current ranges of the sine waveform, the sawtooth waveform and the rectangular waveform are-3 mA, and the output frequency range is 0-100 Hz. The stimulation state is displayed to an operator in real time through the display screen and the PC terminal, and digital display type operation setting is abandoned. Stimulation time and stimulation intensity can be set through a simple control software interface, and meanwhile, due to the backlight design of the display screen, an operator can visually observe the state of the equipment. More, the buzzer is used for prompting the running state of the transcranial electrical stimulation instrument, and comprises alarms for starting, starting/finishing running and outputting stimulation current to be overlarge to stop working.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (10)
1. The transcranial electrical stimulation instrument comprises a host and electrodes, and is characterized in that the host comprises a transcranial electrical stimulation circuit, and the transcranial electrical stimulation circuit comprises a voltage signal generating module, a constant current source module, a waveform acquisition module, an MCU (microprogrammed control unit) and a control transceiving module; the voltage signal generation module is connected with the input end of the constant current source module, the output end of the constant current source module is output to an electrode through an electrode wire to act on a load, the input end of the waveform acquisition module is connected with the output end of the constant current source module, and the output end of the waveform acquisition module is connected with the MCU; and the MCU transmits and stores data with the PC end through the control transceiver module.
2. The transcranial electrical stimulation instrument according to claim 1, wherein the transcranial electrical stimulation circuit further comprises a relay protection module arranged at an output end of the constant current source module, the relay protection module outputs weak current to the load, and the output current is increased after the load impedance is stabilized.
3. The transcranial electrical stimulation instrument according to claim 2, wherein the waveform acquisition module comprises a sampling resistor R11 connected with the load in parallel, the MCU receives a voltage signal of the sampling resistor R11 in real time and converts the voltage signal into a digital signal, and the current controlling the load is monitored in real time.
4. The transcranial electrical stimulation instrument according to claim 3, wherein the waveform acquisition module further comprises an output impedance monitoring module, the real-time voltage signal of the sampling resistor R11 is converted into a real-time current, and the MCU controls to stop outputting the current if the real-time current is larger than a limit current.
5. The transcranial electrostimulator according to claim 4, wherein the voltage signal generating module comprises a direct current voltage signal module and an alternating current voltage signal module, the constant current source module comprises a direct current constant current source module and an alternating current constant current source module, and the waveform acquisition module comprises a direct current waveform acquisition module and an alternating current waveform acquisition module; the direct current voltage signal output by the direct current voltage signal module is converted into current through the direct current constant current source module and is output to the direct current waveform acquisition module; and the alternating current voltage signal output by the alternating current voltage signal module is converted into current through the alternating current constant current source module and is output to the alternating current waveform acquisition module.
6. The transcranial electrical stimulation instrument according to claim 5, wherein the direct current constant current source module and the alternating current constant current source module each comprise a first operational amplifier and a second operational amplifier, an output end of the first operational amplifier is connected with a positive input end of the second operational amplifier, and an output end of the second operational amplifier is connected with a positive input end of the first operational amplifier and a load; the constant current source module adjusts the voltage according to the load size to output a constant current.
7. The transcranial electrostimulation instrument according to claim 6, wherein the control transceiver module comprises at least one of a mobile communication module, a WIFI module, a Bluetooth module.
8. The transcranial electrical stimulator according to any one of claims 1-7, further comprising a multimedia module, wherein the multimedia module comprises a display screen arranged on the outer surface of the host and a buzzer for prompting the state of the transcranial electrical stimulator; the display screen displays the waveform of the transcranial electrical stimulation circuit.
9. The transcranial electrostimulator of claim 8, further comprising a backlight provided to the display screen.
10. The transcranial electrical stimulation apparatus according to claim 9, wherein the MCU employs STM32 series chips.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821880754.0U CN209809314U (en) | 2018-11-15 | 2018-11-15 | Transcranial electrical stimulation instrument |
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| CN201821880754.0U CN209809314U (en) | 2018-11-15 | 2018-11-15 | Transcranial electrical stimulation instrument |
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| CN209809314U true CN209809314U (en) | 2019-12-20 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111632265A (en) * | 2020-06-29 | 2020-09-08 | 广州市卫健医疗器械有限公司 | Micro-current stimulation instrument |
| CN111870812A (en) * | 2020-08-24 | 2020-11-03 | 大悦创新（苏州）医疗科技股份有限公司 | Electrical stimulation output circuit |
| CN113018683A (en) * | 2021-03-01 | 2021-06-25 | 安徽效隆科技有限公司 | Transcranial real-time alternating current stimulation equipment and current control method |
-
2018
- 2018-11-15 CN CN201821880754.0U patent/CN209809314U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111632265A (en) * | 2020-06-29 | 2020-09-08 | 广州市卫健医疗器械有限公司 | Micro-current stimulation instrument |
| CN111870812A (en) * | 2020-08-24 | 2020-11-03 | 大悦创新（苏州）医疗科技股份有限公司 | Electrical stimulation output circuit |
| CN111870812B (en) * | 2020-08-24 | 2024-04-02 | 大悦创新（苏州）医疗科技股份有限公司 | Electrical stimulation output circuit |
| CN113018683A (en) * | 2021-03-01 | 2021-06-25 | 安徽效隆科技有限公司 | Transcranial real-time alternating current stimulation equipment and current control method |
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