Swallowing rehabilitation training device

Abstract

The utility model provides a swallowing rehabilitation training device, the swallowing rehabilitation training device comprises a host device and a plurality of electrode patches, the host device comprises a multi-channel control circuit and a main control unit, and the plurality of electrode patches are respectively attached to a plurality of to-be-trained muscle groups of the head and neck of a target user; the main control unit is connected with a plurality of input ends of the multi-channel control circuit, a plurality of output ends of the multi-channel control circuit are respectively connected with the plurality of electrode patches, and the multi-channel control circuit is used for electrically stimulating the plurality of muscle groups to be trained through the plurality of electrode patches; a plurality of acquisition ends of the multi-channel control circuit are respectively connected with the plurality of electrode patches so as to respectively acquire electromyographic signals of the plurality of to-be-trained muscle groups, and a plurality of feedback ends of the multi-channel control circuit are connected with the main control unit. Synchronous electrical stimulation of a plurality of muscle groups to be trained and synchronous acquisition of a plurality of electromyographic signals are achieved through the multi-channel control circuit, and pertinence, comprehensiveness and efficiency of swallowing rehabilitation training are improved.

Description

Technical Field

[0001] This utility model relates to the field of rehabilitation training technology, and more specifically, to a swallowing rehabilitation training device. Background Technology

[0002] Dysphagia is a common sequela of stroke, nerve injury, and other diseases. Traditional treatments rely on manual rehabilitation training, which suffers from low efficiency and poor patient participation. Existing electrical stimulation devices stimulate muscle contraction with low-frequency currents, but lack real-time feedback and precise control of the patient's active muscle strength.

[0003] Current swallowing biofeedback devices incorporate electromyography (EMG) signal acquisition, but their signal processing technology is limited, their anti-interference capabilities are poor, and most are single-channel designs, making it impossible to monitor the activity status of multiple muscle groups simultaneously. In addition, the devices are large in size, complex to operate, and require professional guidance, which is not conducive to self-training. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of the prior art by providing a swallowing rehabilitation training device that enables synchronous electrical stimulation of multiple muscle groups to be trained and synchronous acquisition of multiple electromyographic signals through a multi-channel control circuit.

[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows:

[0006] In a first aspect, embodiments of this application provide a swallowing rehabilitation training device, which includes: a main unit and multiple electrode patches. The main unit includes: a multi-channel control circuit and a main control unit. The multiple electrode patches are used to attach to multiple muscle groups to be trained in the head and neck of the target user.

[0007] The main control unit is connected to multiple input terminals of the multi-channel control circuit, and the multiple output terminals of the multi-channel control circuit are respectively connected to the multiple electrode patches, for electrically stimulating the multiple muscle groups to be trained through the multiple electrode patches respectively.

[0008] The multiple acquisition terminals of the multi-channel control circuit are respectively connected to the multiple electrode patches to acquire the electromyographic signals of the multiple muscle groups to be trained, and the multiple feedback terminals of the multi-channel control circuit are connected to the main control unit.

[0009] In an optional implementation, the multi-channel control circuit includes: multiple single-channel electrical stimulation output modules and multiple single-channel electromyography signal acquisition modules;

[0010] The input terminals of the plurality of single-channel electrical stimulation output modules are the plurality of input terminals of the multi-channel control circuit, used to connect to the main control unit; the output terminals of the plurality of single-channel electrical stimulation output modules are the plurality of output terminals of the multi-channel control circuit, respectively used to connect to the plurality of electrode patches.

[0011] The input terminals of the multiple single-channel electromyography (EMG) signal acquisition modules are multiple acquisition terminals of the multi-channel control circuit, used to connect to the multiple electrode patches. The output terminals of the multiple single-channel EMG signal acquisition modules are multiple feedback terminals of the multi-channel control circuit, respectively used to connect to the main control unit.

[0012] In an optional implementation, each single-channel electrical stimulation output module includes: a waveform generator and a digital-to-analog converter;

[0013] The input terminal of the waveform generator is the input terminal of each single-channel electrical stimulation output module, and is used to connect to the main control unit. The output terminal of the waveform generator is connected to the digital terminal of the digital-to-analog converter. The analog terminal of the digital-to-analog converter is the output terminal of each single-channel electrical stimulation output module, and is used to connect to an electrode patch.

[0014] In an optional implementation, each single-channel electrical stimulation output module further includes: a voltage control amplifier, a power amplifier, and a safety protection circuit;

[0015] The input terminal of the voltage-controlled amplifier is connected to the analog terminal of the digital-to-analog converter, the output terminal of the voltage-controlled amplifier is connected to the input terminal of the power amplifier, the output terminal of the power amplifier is connected to the input terminal of the safety protection circuit, and the output terminal of the safety protection circuit is the output terminal of each single-channel electrical stimulation output module, used to connect an electrode patch.

[0016] In an optional implementation, each single-channel electrical stimulation output module further includes a current stabilization circuit;

[0017] The input terminal of the current stabilizing circuit is connected to the output terminal of the power amplifier, and the output terminal of the current stabilizing circuit is connected to the input terminal of the safety protection circuit.

[0018] In an optional implementation, each single-channel electromyography signal acquisition module includes: a preamplifier, a filter circuit, and an analog-to-digital converter;

[0019] The input terminal of the preamplifier is the input terminal of each single-channel electromyography (EMG) signal acquisition module, and is used to connect an electrode patch. The output terminal of the preamplifier is connected to the input terminal of the filter circuit. The output terminal of the filter circuit is connected to the analog terminal of the analog-to-digital converter (ADC). The digital terminal of the ADC is the output terminal of each single-channel EMG signal acquisition module, and is used to connect to the main control unit.

[0020] In an optional implementation, the filtering circuit includes a high-pass filter circuit and a low-pass filter circuit;

[0021] The input terminal of the high-pass filter circuit is the input terminal of the filter circuit, the output terminal of the high-pass filter circuit is connected to the input terminal of the low-pass filter circuit, and the output terminal of the low-pass filter circuit is the output terminal of the filter circuit.

[0022] In an optional implementation, each single-channel electromyography signal acquisition module further includes: a secondary amplifier;

[0023] The input terminal of the secondary amplifier is connected to the output terminal of the filter circuit, and the output terminal of the secondary amplifier is connected to the analog terminal of the analog-to-digital converter.

[0024] In an optional embodiment, the swallowing rehabilitation training device further includes a Bluetooth module; the Bluetooth module is connected to the host device.

[0025] In an optional implementation, the host device includes: a display screen, and / or a voice player, wherein the display screen is connected to the main control unit, and the voice player is connected to the main control unit.

[0026] The beneficial effects of this application are:

[0027] This application provides a swallowing rehabilitation training device, which includes a main unit and multiple electrode patches. The main unit includes a multi-channel control circuit and a main control unit. The multiple electrode patches are attached to multiple muscle groups to be trained on the head and neck of the target user. The main control unit is connected to multiple input terminals of the multi-channel control circuit, and multiple output terminals of the multi-channel control circuit are respectively connected to the multiple electrode patches for electrically stimulating the multiple muscle groups to be trained through the multiple electrode patches. Multiple acquisition terminals of the multi-channel control circuit are respectively connected to the multiple electrode patches to acquire electromyographic signals of the multiple muscle groups to be trained. Multiple feedback terminals of the multi-channel control circuit are connected to the main control unit. By using the multi-channel control circuit to achieve synchronous electrical stimulation of multiple muscle groups to be trained and synchronous acquisition of multiple electromyographic signals, the pertinence, comprehensiveness, and efficiency of swallowing rehabilitation training are improved. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of a swallowing rehabilitation training device provided in an embodiment of this application;

[0030] Figure 2 This is a schematic diagram of the placement of an electrode patch provided in an embodiment of this application;

[0031] Figure 3 A schematic diagram of a single-channel electrical stimulation output module provided in an embodiment of this application;

[0032] Figure 4 A circuit diagram of a single-channel electrical stimulation output module provided for an embodiment of this application;

[0033] Figure 5 A schematic diagram of a single-channel electromyography signal acquisition module provided in an embodiment of this application;

[0034] Figure 6 This is a circuit diagram of a single-channel electromyography signal acquisition module provided in an embodiment of this application.

[0035] Key component symbols: 100 - Main unit; 110 - Main control unit; 120 - Multi-channel control circuit; 121 - Single-channel electrical stimulation output module; 122 - Single-channel electromyography signal acquisition module; 1211 - Waveform generator; 1212 - Digital-to-analog converter; 1213 - Voltage control amplifier; 1214 - Power amplifier; 1215 - Current stabilization circuit; 1216 - Safety protection circuit; 1221 - Preamplifier; 1222 - Filter circuit; 1223 - Secondary amplifier; 1224 - Analog-to-digital converter; 131 - High-pass filter circuit; 132 - Low-pass filter circuit; 200 - Electrode patch. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0037] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0038] In the description of this application, it should be noted that if the terms "upper", "lower", etc. appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this application is usually placed in, it is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0039] Furthermore, the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Additionally, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0040] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0041] The swallowing rehabilitation training device provided in this application is illustrated below with reference to the accompanying drawings through several examples.

[0042] Figure 1 This is a schematic diagram of a swallowing rehabilitation training device provided in an embodiment of this application; Figure 2 This is a schematic diagram illustrating the placement of an electrode patch according to an embodiment of this application. Figure 1 As shown, the swallowing rehabilitation training device includes a main unit 100 and multiple electrode patches 200. The main unit 100 includes a multi-channel control circuit 120 and a main control unit 110. The multiple electrode patches 200 are used to attach to multiple muscle groups to be trained on the head and neck of the target user.

[0043] The main control unit 110 is connected to multiple input terminals of the multi-channel control circuit 120, and multiple output terminals of the multi-channel control circuit 120 are respectively connected to multiple electrode patches 200, which are used to electrically stimulate multiple muscle groups to be trained through multiple electrode patches 200.

[0044] Multiple acquisition terminals of the multi-channel control circuit 120 are respectively connected to multiple electrode patches 200 to acquire electromyographic signals of multiple muscle groups to be trained. Multiple feedback terminals of the multi-channel control circuit 120 are connected to the main control unit 110.

[0045] In this embodiment, the specifications of the host device 100 are as follows: shell size: 120mm×70mm×25mm, weight: approximately 150g (including battery), power supply: 1500mAh lithium battery, supporting USB charging.

[0046] The hardware components of the host device 100 include: a main control unit 110 and a multi-channel control circuit 120. The main control unit 110 uses a 32-bit microprocessor with an ARM Cortex-M4 core, a main frequency of 72MHz, and has 512KB of flash memory and 64KB of RAM. It is responsible for controlling the overall swallowing rehabilitation training device.

[0047] The multi-channel control circuit 120 is used to simultaneously electrically stimulate multiple muscle groups to be trained and to simultaneously monitor the electromyographic signals of multiple muscle groups to be trained. The main control unit 110 sends control commands to the multi-channel control circuit 120, so that the multi-channel control circuit 120 controls multiple electrode patches 200 to electrically stimulate the attached muscle groups to be trained, and collects the electromyographic signals of multiple muscle groups to be trained in real time. The electromyographic signals are bioelectrical signals generated during muscle activity, reflecting the current excitation and functional state of the muscles.

[0048] Multiple electrode patches 200 are made of medical-grade silicone. Each electrode patch 200 comprises a medical-grade silicone base, a conductive silver paste layer, a conductive gel layer, a waterproof protective film, and a dustproof sticker. Depending on the location of different muscle groups to be trained in the head and neck area, the multiple electrode patches 200 are attached to the corresponding positions. For example, ... Figure 2 As shown, multiple electrode patches 200 can be attached to the midpoint of the hyoid-mandibular connection, the superior and inferior hyoid muscle groups, and the left and right pharyngeal muscle groups, respectively.

[0049] Optionally, the host device 100 includes: a display screen, and / or a voice player, wherein the display screen is connected to the main control unit 110, and the voice player is connected to the main control unit 110.

[0050] The display screen can be a 2.8-inch color touch LCD screen with a resolution of 320×240 pixels, used to display the electromyographic signals of multiple muscle groups to be trained. The voice player can be used to output the data of the electromyographic signals of multiple muscle groups to be trained by voice, so that the target user can intuitively understand the training situation.

[0051] In addition, the display screen can also show a selection control for various electrical stimulation modes. By selecting different electrical stimulation modes, the main control unit 110 outputs different control signals to the multi-channel control circuit 120, such as current intensity, frequency, pulse width, etc., so that the multi-channel control circuit 120 controls the corresponding electrode patch 200 to perform electrical stimulation on the muscle group to be trained based on the received control signals, induces the contraction of the muscle group to be trained, achieves the purpose of rehabilitation training, and then collects the electromyographic signals of the corresponding muscle group to be trained.

[0052] For example, if the selected electrical stimulation mode is the basic mode, the multi-channel control circuit 120 controls the electrode patch 200 attached to the midpoint of the hyoid-mandibular connection to electrically stimulate the muscle group at the midpoint of the hyoid-mandibular connection, thereby acquiring the electromyographic signal of the midpoint of the hyoid-mandibular connection; if the selected electrical stimulation mode is the enhanced mode, the multi-channel control circuit 120 controls the electrode patch 200 attached to the superior and inferior hyoid muscle groups to electrically stimulate the muscle groups of the superior and inferior hyoid muscle groups, thereby acquiring the electromyographic signals of the superior and inferior hyoid muscle groups; if the selected electrical stimulation mode is the advanced mode, the multi-channel control circuit 120 controls the electrode patch 200 attached to the left and right pharyngeal muscle groups to electrically stimulate the muscle groups of the left and right pharyngeal muscle groups, thereby acquiring the electromyographic signals of the left and right pharyngeal muscle groups.

[0053] Optionally, the multi-channel control circuit 120 includes: multiple single-channel electrical stimulation output modules 121 and multiple single-channel electromyography signal acquisition modules 122.

[0054] The input terminals of multiple single-channel electrical stimulation output modules 121 are multiple input terminals of the multi-channel control circuit 120, used to connect to the main control unit 110. The output terminals of the multiple single-channel electrical stimulation output modules 121 are multiple output terminals of the multi-channel control circuit 120, respectively used to connect to multiple electrode patches 200. The input terminals of multiple single-channel electromyography signal acquisition modules 122 are multiple acquisition terminals of the multi-channel control circuit 120, used to connect to multiple electrode patches 200. The output terminals of the multiple single-channel electromyography signal acquisition modules 122 are multiple feedback terminals of the multi-channel control circuit 120, respectively used to connect to the main control unit 110.

[0055] Specifically, multiple single-channel electrical stimulation output modules 121 are used to control multiple electrode patches 200 to electrically stimulate multiple muscle groups to be trained, and multiple single-channel electromyography signal acquisition modules 122 are used to acquire electromyography signals of multiple muscle groups to be trained and feed them back to the main control unit 110.

[0056] Optionally, the swallowing rehabilitation training device also includes: a Bluetooth module; the Bluetooth module is connected to the host device 100.

[0057] The Bluetooth module supports the Bluetooth 5.0 protocol. The host device 100 can connect to other terminal devices, such as mobile phones and tablets, via the Bluetooth module. The host device 100 can communicate with other terminal devices via Bluetooth to enable remote swallowing rehabilitation training for the target user.

[0058] It should be noted that the host device 100 also includes a power management module, which is connected to the main control unit 110 and the multi-channel control circuit 120 respectively. The power management module includes a charging circuit and a power management circuit, which are used to supply power to the main control unit 110 and the multi-channel control circuit 120.

[0059] In summary, this application provides a swallowing rehabilitation training device, which includes a main unit and multiple electrode patches. The main unit includes a multi-channel control circuit and a main control unit. The multiple electrode patches are respectively attached to multiple muscle groups to be trained on the head and neck of the target user. The main control unit is connected to multiple input terminals of the multi-channel control circuit, and multiple output terminals of the multi-channel control circuit are respectively connected to the multiple electrode patches for electrically stimulating the multiple muscle groups to be trained through the multiple electrode patches. Multiple acquisition terminals of the multi-channel control circuit are respectively connected to the multiple electrode patches to acquire electromyographic signals of the multiple muscle groups to be trained. Multiple feedback terminals of the multi-channel control circuit are connected to the main control unit. By using the multi-channel control circuit to achieve synchronous electrical stimulation of multiple muscle groups to be trained and synchronous acquisition of multiple electromyographic signals, the pertinence, comprehensiveness, and efficiency of swallowing rehabilitation training are improved.

[0060] Figure 3 A schematic diagram of a single-channel electrical stimulation output module provided in an embodiment of this application; Figure 4 This is a circuit diagram of a single-channel electrical stimulation output module provided in an embodiment of this application. Figure 3 As shown, each single-channel electrical stimulation output module 121 includes a waveform generator 1211 and a digital-to-analog converter 1212.

[0061] The input terminal of the waveform generator 1211 is the input terminal of each single-channel electrical stimulation output module 121, which is used to connect to the main control unit 110. The output terminal of the waveform generator 1211 is connected to the digital terminal of the digital-to-analog converter 1212. The analog terminal of the digital-to-analog converter 1212 is the output terminal of each single-channel electrical stimulation output module 121, which is used to connect to an electrode patch 200.

[0062] In this embodiment, each single-channel electrical stimulation output module 121 corresponds to an electrode patch 200, which is responsible for converting the digital control commands of the main control unit 110 into electrical stimulation signals that can be applied to muscles, and ensuring the safety and stability of the signals.

[0063] For example, the digital control instructions of the main control unit 110 may include: output waveform: symmetrical biphasic square wave; pulse width: 50-300μs, step 10μs; stimulation frequency: 1-100Hz, step 1Hz; stimulation intensity: 0-100mA, step 1mA; rise and fall time: adjustable, 0.1-2 seconds. The waveform generator 1211 receives the digital control instructions (such as stimulation frequency, pulse width, waveform type, etc.) from the main control unit 110, generates the corresponding digital waveform signal, and then the output of the waveform generator 1211 is used to transmit the digital waveform signal to the digital-to-analog converter 1212. The digital-to-analog converter 1212 converts the digital waveform signal output by the waveform generator 1211 into a continuous analog electrical signal (voltage or current), enabling it to directly act on human tissue. Specifically, the digital terminal of the digital-to-analog converter 1212 receives the digital waveform from the waveform generator 1211, and the analog terminal of the digital-to-analog converter 1212 outputs the corresponding voltage signal (such as 0-5V).

[0064] Optionally, each single-channel electrical stimulation output module 121 further includes a voltage control amplifier 1213, a power amplifier 1214, and a safety protection circuit 1216.

[0065] The input terminal of the voltage-controlled amplifier 1213 is connected to the analog terminal of the digital-to-analog converter 1212, the output terminal of the voltage-controlled amplifier 1213 is connected to the input terminal of the power amplifier 1214, the output terminal of the power amplifier 1214 is connected to the input terminal of the safety protection circuit 1216, and the output terminal of the safety protection circuit 1216 is the output terminal of each single-channel electrical stimulation output module 121, which is used to connect an electrode patch 200.

[0066] Specifically, the voltage control amplifier 1213 is used to amplify and condition the low-power analog voltage signal output by the digital-to-analog converter 1212, adjust the amplitude and shape of the output signal, and output it to the power amplifier 1214. The power amplifier 1214 is used to further amplify the voltage signal to a power level sufficient to drive muscle contraction (typically requiring an output current of 1-20mA and a voltage of 0-30V), and then output the amplified electrical signal to the safety protection circuit 1216.

[0067] The safety protection circuit 1216 may include overvoltage protection circuit, overcurrent protection circuit, short circuit protection circuit, leakage current protection circuit, etc. The safety protection circuit 1216 can effectively reduce the risks during the rehabilitation training process.

[0068] Optionally, each single-channel electrical stimulation output module 121 further includes a current stabilization circuit 1215.

[0069] The input terminal of the current stabilizing circuit 1215 is connected to the output terminal of the power amplifier 1214, and the output terminal of the current stabilizing circuit 1215 is connected to the input terminal of the safety protection circuit 1216.

[0070] Since the impedance of human tissues can change due to factors such as skin humidity and patch contact area, directly outputting a voltage signal may cause fluctuations in the actual stimulation current, affecting the rehabilitation training effect and even safety. Therefore, the current stabilization circuit 1215 receives the amplified electrical signal, monitors the output current in real time through a negative feedback mechanism (such as a transconductance amplifier or constant current source circuit), and automatically adjusts the voltage according to impedance changes to ensure a constant current. Then, the current is output to the safety protection circuit 1216.

[0071] like Figure 4 As shown, the digital control commands are processed by the waveform generator 1211 and the digital-to-analog converter 1212. Signals are input from interface IN and output from interface OUT. The voltage control amplifier 1213 includes a first operational amplifier U400A, a second operational amplifier U400B, and external resistors and capacitors (resistors R410, R411, R420, R409, R408, capacitor C402, and capacitor C411). The power amplifier 1214 includes a MOSFET Q404, a transformer TR400, and a resistor R407. The power amplification stage composed of the MOSFET and transformer boosts the signal energy to the level required to drive the electrodes.

[0072] The safety protection circuit 1216 includes: diode D401, diode D402, optocoupler U401, resistor R411, resistor R412, resistor R413, and capacitor C404. Diodes D401 and D402 are used for surge and electrostatic discharge protection, and optocoupler U401 provides signal isolation to improve safety.

[0073] Figure 5 This is a schematic diagram of a single-channel electromyography signal acquisition module provided in an embodiment of this application. Figure 6 A circuit diagram of a single-channel electromyography signal acquisition module provided in this application embodiment is shown below. Figure 5 As shown, each single-channel electromyography signal acquisition module 122 includes: a preamplifier 1221, a filter circuit 1222, and an analog-to-digital converter 1224.

[0074] The input terminal of the preamplifier 1221 is the input terminal of each single-channel electromyography signal acquisition module 122, which is used to connect an electrode patch 200. The output terminal of the preamplifier 1221 is connected to the input terminal of the filter circuit 1222. The output terminal of the filter circuit 1222 is connected to the analog terminal of the analog-to-digital converter 1224. The digital terminal of the analog-to-digital converter 1224 is the output terminal of each single-channel electromyography signal acquisition module 122, which is used to connect to the main control unit 110.

[0075] In this embodiment, the core function of each single-channel electromyography signal acquisition module 122 is to acquire muscle electrical activity signals from the electrode patch 200 and convert them into digital signals for processing by the main control unit 110.

[0076] The preamplifier 1221 is directly connected to the electrode patch 200 and is used to perform differential amplification of weak bioelectric signals with high common-mode rejection ratio and high input impedance to suppress interference and increase signal amplitude. The filter circuit 1222 receives the signal amplified by the preamplifier 1221 and is used to filter out low-frequency drift, power frequency interference and high-frequency noise. The filtered signal is sent to the analog-to-digital converter 1224, which performs digital sampling and obtains a digital signal that is fed back to the main control unit 110.

[0077] Optionally, the filter circuit 1222 includes a high-pass filter circuit 131 and a low-pass filter circuit 132.

[0078] The input terminal of the high-pass filter circuit 131 is the input terminal of the filter circuit 1222. The output terminal of the high-pass filter circuit 131 is connected to the input terminal of the low-pass filter circuit 132. The output terminal of the low-pass filter circuit 132 is the output terminal of the filter circuit 1222.

[0079] The high-pass filter circuit 131 is used to remove low-frequency noise and DC components (such as drift signals caused by poor contact between the electrode and the skin). The cutoff frequency can be set to about 20Hz to ensure that the low-frequency components of the electromyography signal are preserved. The low-pass filter circuit 132 is used to suppress high-frequency noise (such as electromagnetic interference and circuit self-oscillation) to avoid signal distortion. The cutoff frequency can usually be about 500Hz to prevent interference signals higher than the frequency of muscle electrical activity from entering the subsequent processing stage.

[0080] Optionally, each single-channel electromyography signal acquisition module 122 further includes a secondary amplifier 1223.

[0081] The input terminal of the secondary amplifier 1223 is connected to the output terminal of the filter circuit 1222, and the output terminal of the secondary amplifier 1223 is connected to the analog terminal of the analog-to-digital converter 1224.

[0082] If the signal amplitude after preamplification is still insufficient, the signal can be further amplified to the optimal input range of the analog-to-digital converter 1224 (such as 0~5V) through the secondary amplifier 1223, so as to avoid the quantization error of the analog-to-digital converter 1224 from increasing due to the signal being too small.

[0083] like Figure 6 As shown, the input interfaces are SEMG_N_A and SEMG_P_A, the output interface is EMG_A, and the RLD_A interface is used to suppress common-mode interference. The preamplifier 1221 includes amplifier U303 and amplifier U305A. The high-pass filter circuit 131 includes amplifier U305B, capacitor C343, resistor R325, and resistor R326. The low-pass filter circuit 132 includes capacitor C391, capacitor C342, resistor R340, and amplifier U307A. The secondary amplifier 1223 includes capacitor C393, resistor R343, amplifier U307C, and amplifier U307B.

[0084] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A swallowing rehabilitation training device, characterized in that, The swallowing rehabilitation training device includes: a main unit and multiple electrode patches. The main unit includes: a multi-channel control circuit and a main control unit. The multiple electrode patches are used to attach to multiple muscle groups to be trained in the head and neck of the target user. The main control unit is connected to multiple input terminals of the multi-channel control circuit, and the multiple output terminals of the multi-channel control circuit are respectively connected to the multiple electrode patches, for electrically stimulating the multiple muscle groups to be trained through the multiple electrode patches respectively. The multiple acquisition terminals of the multi-channel control circuit are respectively connected to the multiple electrode patches to acquire the electromyographic signals of the multiple muscle groups to be trained, and the multiple feedback terminals of the multi-channel control circuit are connected to the main control unit.

2. The swallowing rehabilitation training device as described in claim 1, characterized in that, The multi-channel control circuit includes: multiple single-channel electrical stimulation output modules and multiple single-channel electromyography signal acquisition modules; The input terminals of the plurality of single-channel electrical stimulation output modules are the plurality of input terminals of the multi-channel control circuit, used to connect to the main control unit; the output terminals of the plurality of single-channel electrical stimulation output modules are the plurality of output terminals of the multi-channel control circuit, respectively used to connect to the plurality of electrode patches. The input terminals of the multiple single-channel electromyography (EMG) signal acquisition modules are multiple acquisition terminals of the multi-channel control circuit, used to connect to the multiple electrode patches. The output terminals of the multiple single-channel EMG signal acquisition modules are multiple feedback terminals of the multi-channel control circuit, respectively used to connect to the main control unit.

3. The swallowing rehabilitation training device as described in claim 2, characterized in that, Each single-channel electrical stimulation output module includes: a waveform generator and a digital-to-analog converter; The input terminal of the waveform generator is the input terminal of each single-channel electrical stimulation output module, and is used to connect to the main control unit. The output terminal of the waveform generator is connected to the digital terminal of the digital-to-analog converter. The analog terminal of the digital-to-analog converter is the output terminal of each single-channel electrical stimulation output module, and is used to connect to an electrode patch.

4. The swallowing rehabilitation training device as described in claim 3, characterized in that, Each single-channel electrical stimulation output module also includes: a voltage control amplifier, a power amplifier, and a safety protection circuit; The input terminal of the voltage-controlled amplifier is connected to the analog terminal of the digital-to-analog converter, the output terminal of the voltage-controlled amplifier is connected to the input terminal of the power amplifier, the output terminal of the power amplifier is connected to the input terminal of the safety protection circuit, and the output terminal of the safety protection circuit is the output terminal of each single-channel electrical stimulation output module, used to connect an electrode patch.

5. The swallowing rehabilitation training device as described in claim 4, characterized in that, Each single-channel electrical stimulation output module also includes: a current stabilization circuit; The input terminal of the current stabilizing circuit is connected to the output terminal of the power amplifier, and the output terminal of the current stabilizing circuit is connected to the input terminal of the safety protection circuit.

6. The swallowing rehabilitation training device as described in claim 2, characterized in that, Each single-channel electromyography signal acquisition module includes: a preamplifier, a filter circuit, and an analog-to-digital converter; The input terminal of the preamplifier is the input terminal of each single-channel electromyography (EMG) signal acquisition module, and is used to connect an electrode patch. The output terminal of the preamplifier is connected to the input terminal of the filter circuit. The output terminal of the filter circuit is connected to the analog terminal of the analog-to-digital converter (ADC). The digital terminal of the ADC is the output terminal of each single-channel EMG signal acquisition module, and is used to connect to the main control unit.

7. The swallowing rehabilitation training device as described in claim 6, characterized in that, The filtering circuit includes: a high-pass filter circuit and a low-pass filter circuit; The input terminal of the high-pass filter circuit is the input terminal of the filter circuit, the output terminal of the high-pass filter circuit is connected to the input terminal of the low-pass filter circuit, and the output terminal of the low-pass filter circuit is the output terminal of the filter circuit.

8. The swallowing rehabilitation training device as described in claim 6, characterized in that, Each single-channel electromyography signal acquisition module also includes: a secondary amplifier; The input terminal of the secondary amplifier is connected to the output terminal of the filter circuit, and the output terminal of the secondary amplifier is connected to the analog terminal of the analog-to-digital converter.

9. The swallowing rehabilitation training device as described in claim 1, characterized in that, The swallowing rehabilitation training device also includes a Bluetooth module; the Bluetooth module is connected to the host device.

10. The swallowing rehabilitation training device as described in claim 1, characterized in that, The host device includes: a display screen, and / or a voice player, wherein the display screen is connected to the main control unit, and the voice player is connected to the main control unit.

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