A blood flow restriction band with electrical stimulation

Abstract

This utility model discloses an electrically stimulated blood flow restriction band, relating to the fields of electrical stimulation and inflation control. It includes a fixing part for wrapping around and fixing to the user's arm to apply pressure; electrode pads detachably disposed inside the fixing part; an electrical stimulation module with a control end connected to a processor and an output end connected to the electrode pads for outputting electrical stimulation signals to the electrode pads; an air pump with a control end connected to the processor and an output end connected to the inflation port of the fixing part for inflating the fixing part to change its pressure; and a processor for receiving user requests and controlling the operation of the electrical stimulation module and air pump based on those requests. By placing the electrode pads inside the fixing part, not only can the fixing part apply pressure to the user's arm, but the electrode pads can also provide electrical stimulation to the user's arm; the two are integrated for combined use, simplifying the treatment process.

Description

Technical Field

[0001] This utility model relates to the field of electrical stimulation and inflation control, and in particular to a blood flow restriction band with electrical stimulation. Background Technology

[0002] BFR (Blood Flow Restriction) uses sufficient pressure to completely restrict venous blood flow while allowing arterial blood flow, creating a hypoxic environment in the tissue. This hypoxia increases growth hormone and muscle strength. Most existing blood flow restriction band therapy devices lack electrical stimulation functionality; that is, blood flow restriction and electrical stimulation are two separate devices that cannot be used together, making the treatment process more complex. Utility Model Content

[0003] The purpose of this invention is to provide an electrically stimulated blood flow restriction band. Electrode pads are provided on the inner side of the fixing part. Not only can the fixing part apply pressure to the user's arm, but the electrode pads can also provide electrical stimulation to the user's arm. The two are combined into one unit for use, making the treatment process simpler.

[0004] To solve the above-mentioned technical problems, this utility model provides an electrically stimulated blood flow restriction band, comprising:

[0005] A fixing part is used to surround and fix the user's treatment site, and to apply pressure to the treatment site;

[0006] Electrode sheet, wherein the electrode sheet is detachably disposed on the inner side of the fixing part;

[0007] An electrical stimulation module, with its control terminal connected to the processor and its output terminal connected to the electrode pads, is used to output electrical stimulation signals to the electrode pads.

[0008] An air pump, with its control end connected to the processor and its output end connected to the inflation port of the fixed part, is used to inflate the fixed part to change the pressure of the fixed part;

[0009] The processor is used to receive user requests and control the operation of the electrical stimulation module and the air pump based on the user requests.

[0010] On the other hand, the electrical stimulation module includes an amplification module, a forward switching module, a reverse switching module, and a transformer;

[0011] The input terminal of the amplification module is connected to the sine wave output terminal of the processor; the input terminal of the forward switching module is connected to the forward disconnect signal output terminal of the processor; the input terminal of the reverse switching module is connected to the reverse disconnect signal output terminal of the processor; the output terminal of the amplification module is connected to the center tap of the primary winding of the transformer; the output terminal of the forward switching module is connected to the center tap and the second terminal of the primary winding of the transformer; the output terminal of the reverse switching module is connected to the center tap and the first terminal of the primary winding of the transformer; and the secondary winding of the transformer is connected to the electrode plate.

[0012] The amplification module is used to amplify the amplitude of the sine wave signal sent by the processor. The forward switching module is used to disconnect the forward frequency of the sine wave signal when the processor sends a forward disconnect signal. The reverse switching module is used to disconnect the reverse frequency of the sine wave signal when the processor sends a reverse disconnect signal. The transformer is used to couple the amplified sine wave signal to the electrode plate.

[0013] On the other hand, the amplification module includes a comparator, a first resistor, a second resistor, and a first controllable switch;

[0014] The non-inverting input of the comparator is connected to the output of the processor. The inverting input of the comparator is connected to the first end of the first resistor and the first end of the second resistor. The second end of the first resistor is connected to the output of the comparator and the control end of the first controllable switch. The second end of the second resistor is grounded. The first end of the first controllable switch is connected to the power supply. The second end of the first controllable switch is connected to the center tap of the primary winding of the transformer.

[0015] The comparator, the first resistor, and the second resistor are used to amplify the sine wave signal. The first controllable switch operates in the amplification range and is used to amplify the sine wave signal a second time.

[0016] On the other hand, the reverse switching module includes a first switching module, a third resistor, and a first diode;

[0017] The control terminal of the first switch module is connected to the reverse disconnect signal output terminal of the processor. The first terminal of the first switch module is connected to ground. The second terminal of the first switch module is connected to the first terminal of the third resistor and the first terminal of the primary winding of the transformer. The second terminal of the third resistor is connected to the anode of the first diode. The cathode of the first diode is connected to the center tap of the primary winding of the transformer.

[0018] The first switch module is used to turn off based on the reverse disconnect signal, so that the third resistor and the first diode consume the reverse frequency signal, thereby disconnecting the reverse frequency of the sine wave signal.

[0019] On the other hand, the first switch module includes a second controllable switch, a third controllable switch, a fourth controllable switch, a sixth resistor, a seventh resistor, and a tenth resistor;

[0020] The reverse disconnect signal output terminal of the processor is connected to the first terminal of the sixth resistor and the control terminal of the second controllable switch, respectively. The first terminal of the second controllable switch is connected to the first terminal of the seventh resistor, the first terminal of the third controllable switch and the control terminal of the fourth controllable switch. The second terminal of the seventh resistor is connected to the power supply. The second terminal of the sixth resistor is connected to the second terminal of the second controllable switch and the common terminal of the connection is grounded. The second terminal of the fourth controllable switch is connected to the first terminal of the tenth resistor and the control terminal of the third controllable switch. The second terminal of the third controllable switch is connected to the second terminal of the tenth resistor and the common terminal of the connection is grounded. The first terminal of the fourth controllable switch is connected to the first terminal of the third resistor.

[0021] The second controllable switch, the third controllable switch, and the fourth controllable switch are all used to turn off based on the reverse disconnect signal, so that the third resistor and the first diode consume the reverse frequency signal, thereby disconnecting the reverse frequency of the sine wave signal.

[0022] On the other hand, the forward switching module includes a second switching module, a fourth resistor, and a second diode;

[0023] The control terminal of the second switch module is connected to the positive disconnect signal output terminal of the processor. The first terminal of the second switch module is connected to ground. The second terminal of the second switch module is connected to the first terminal of the fourth resistor and the second terminal of the primary winding of the transformer. The second terminal of the fourth resistor is connected to the anode of the second diode. The cathode of the second diode is connected to the center tap of the primary winding of the transformer.

[0024] The second switching module is used to turn off based on the positive disconnect signal, so that the fourth resistor and the second diode consume the positive frequency signal, thereby disconnecting the positive frequency of the sine wave signal.

[0025] On the other hand, the second switch module includes a fifth controllable switch, a sixth controllable switch, a seventh controllable switch, a twelfth resistor, a thirteenth resistor, and a sixteenth resistor;

[0026] The processor's positive disconnect signal output terminal is connected to the first terminal of the twelfth resistor and the control terminal of the fifth controllable switch, respectively. The first terminal of the fifth controllable switch is connected to the first terminal of the thirteenth resistor, the first terminal of the sixth controllable switch, and the control terminal of the seventh controllable switch. The second terminal of the thirteenth resistor is connected to the power supply. The second terminal of the twelfth resistor is connected to the second terminal of the fifth controllable switch, and the common terminal of the connection is grounded. The second terminal of the seventh controllable switch is connected to the first terminal of the sixteenth resistor and the control terminal of the sixth controllable switch. The second terminal of the sixth controllable switch is connected to the second terminal of the sixteenth resistor, and the common terminal of the connection is grounded. The first terminal of the seventh controllable switch is connected to the first terminal of the third resistor.

[0027] The fifth, sixth, and seventh controllable switches are all used to turn off based on the positive disconnect signal, so that the fourth resistor and the second diode consume the positive frequency signal, thereby disconnecting the positive frequency of the sine wave signal.

[0028] On the other hand, it also includes pressure sensors;

[0029] The pressure sensor is located at the air inlet of the fixing part and is connected to the processor;

[0030] The pressure sensor is used to collect the pressure inside the fixed part, convert the pressure into a voltage signal, and send it to the processor.

[0031] On the other hand, it also includes a first control circuit, which includes a seventeenth resistor, an eighteenth resistor, a nineteenth resistor, an eighth controllable switch, and a third diode;

[0032] The first end of the seventeenth resistor is connected to the output terminal of the processor. The second end of the seventeenth resistor is connected to the first end of the eighteenth resistor and the control terminal of the eighth controllable switch. The second end of the eighteenth resistor is connected to the second end of the eighth controllable switch, and the common terminal of the connection is grounded. The first end of the eighteenth resistor is connected to the first end of the nineteenth resistor. The second end of the nineteenth resistor is connected to the anode of the third diode, and the common terminal of the connection serves as the first output terminal of the first control circuit. The cathode of the third diode is connected to the power supply, and the common terminal of the connection serves as the second output terminal of the first control circuit.

[0033] The eighth controllable switch is used to turn on the air pump based on the control of the processor, and the third diode is used to protect the air pump.

[0034] On the other hand, it also includes solenoid valves and a second control circuit;

[0035] The control terminal of the second control circuit is connected to the processor, the first power supply terminal of the solenoid valve is connected to the power supply, the second power supply terminal of the solenoid valve is connected to the first terminal of the second control circuit, the second terminal of the second control circuit is grounded, the first connection terminal of the solenoid valve is connected to the output terminal of the air pump, and the second connection terminal of the solenoid valve is connected to the inflation port of the fixed part.

[0036] The second control circuit is used to supply power to the solenoid valve based on the control of the processor, and the solenoid valve is used to control the opening degree between the first connection terminal and the second connection terminal.

[0037] This application provides an electrically stimulated blood flow restriction band, relating to the fields of electrical stimulation and inflation control. It includes a fixation unit for wrapping around and fixing to the user's arm to apply pressure; electrode pads detachably disposed inside the fixation unit; an electrical stimulation module with a control terminal connected to a processor and an output terminal connected to the electrode pads for outputting electrical stimulation signals to the electrode pads; an air pump with a control terminal connected to the processor and an output terminal connected to the inflation port of the fixation unit for inflating the fixation unit to change its pressure; and a processor for receiving user requests and controlling the operation of the electrical stimulation module and air pump based on those requests. By placing the electrode pads inside the fixation unit, not only can the fixation unit apply pressure to the user's arm, but the electrode pads can also provide electrical stimulation to the user's arm; the two are integrated for combined use, simplifying the treatment process. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the prior art and embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 A schematic diagram of the structure of an electrically stimulated blood flow restriction band provided by this utility model;

[0040] Figure 2 Exploded view of another electrically stimulated blood flow restriction zone provided by this utility model;

[0041] Figure 3 A schematic diagram of a fixing part structure provided by this utility model;

[0042] Figure 4a Right view of the structure of an electrically stimulated blood flow restriction band provided by this utility model;

[0043] Figure 4bA top view of the structure of an electrically stimulated blood flow restriction band provided by this utility model;

[0044] Figure 4c Left view of the structure of an electrically stimulated blood flow restriction band provided by this utility model;

[0045] Figure 5 A schematic diagram of an electrical stimulation output module provided by this utility model;

[0046] Figure 6 A schematic diagram of an electrical stimulation output structure provided by this utility model;

[0047] Figure 7 A schematic diagram of the structure of a pressure sensor provided by this utility model;

[0048] Figure 8 A schematic diagram of the structure of a first control circuit provided by this utility model;

[0049] Figure 9 A schematic diagram of the structure of a processor provided by this utility model;

[0050] Figure 10 This is a schematic diagram of the structure of a decoupling capacitor provided by this utility model;

[0051] Figure 11 A schematic diagram of a reset control structure provided by this utility model;

[0052] Figure 12 This is a schematic diagram of a crystal oscillator circuit provided by the present invention. Detailed Implementation

[0053] The core of this invention is to provide an electrically stimulated blood flow restriction band. Electrode pads are arranged on the inner side of the fixing part. Not only can the fixing part apply pressure to the user's arm, but the electrode pads can also provide electrical stimulation to the user's arm. The two are combined into one unit for use, making the treatment process more convenient.

[0054] 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 only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0055] Figure 1 This invention provides a schematic diagram of the structure of an electrically stimulated blood flow restriction band, which includes:

[0056] Fixing part 6 is used to surround and fix the treatment area to the user, and apply pressure to the treatment area;

[0057] Electrode 10 is detachably disposed inside the fixing part 6;

[0058] The electrical stimulation module 12 has a control terminal connected to the processor 7 and an output terminal connected to the electrode pad 10, and is used to output electrical stimulation signals to the electrode pad 10.

[0059] Air pump 3, with its control end connected to processor 7 and its output end connected to the inflation port of fixing part 6, is used to inflate fixing part 6 to change the pressure of fixing part 6.

[0060] The processor 7 is used to receive user requests and control the operation of the electrical stimulation module 12 and the air pump 3 based on the user requests.

[0061] Figure 2 Exploded view of another electrically stimulated blood flow restriction zone provided by this utility model;

[0062] Figure 3 A schematic diagram of a fixing part structure provided by this utility model;

[0063] Figure 4a Right view of the structure of an electrically stimulated blood flow restriction band provided by this utility model;

[0064] Figure 4b A top view of the structure of an electrically stimulated blood flow restriction band provided by this utility model;

[0065] Figure 4c Left view of the structure of an electrically stimulated blood flow restriction band provided by this utility model;

[0066] Switch button 1 activates the working state. Upper shell 2 is the main structural cover. Air pump 3 and processor 7 connect to control the inflation of the fixing part 6. It should be noted that the fixing part 6 is generally a cuff. Bluetooth module 4 connects to the app, displays the control interface, and allows selection of treatment modes. A three-way connector 5 connects the air pump 3, solenoid valve, and inflation port of the fixing part 6. The fixing part 6 contains an inflation sleeve and electrode pad 10 mounting positions for the patient to wear. Processor 7 integrates multiple modules: electrical stimulation module 12, Bluetooth module, solenoid valve control module, air pump 3 control module, lithium battery module, switch module, and pressure sensor module. Lithium battery 8 powers the device. Solenoid valve 9 controls the gas flow through processor 7. Electrode pad 10, located inside the cuff, outputs electrical stimulation under the control of processor 7. Lower shell 11 is the main structural cover. Among them, such as... Figure 3As shown, the fixing part 6 is connected to a pressure sensor interface 6-1 and a fixing part inflation interface 6-2. The lower part of the fixing part 6 is equipped with an adjustable connection 6-5, which is fixed by the adjustable adhesive part 6-4. Inside the fixing part 6, there is a fixing part 6 for mounting electrode plates 6-3. If electrode plates 10 are not used, they do not need to be installed. Wherein, as Figure 4a , 4b As shown in 4c, the three-way valve 5 is connected to the air inlet 6-2 of the fixing part 6, the air pump 3, and the solenoid valve 9. The pressure sensor interface 6-1 is connected to the processor 7. The electrode plate 10 is connected to the central processing unit 7 through the electrode plate 10-1 and the control module interface. Wherein, as... Figure 1 As shown, the processor 7 integrates the air pump 3 control module, the solenoid valve control module, the electrical stimulation module 12, and the pressure sensor module. The device is turned on via the switch button 1. The processor 7 controls the Bluetooth module 4 to connect to the app device, allowing the user to adjust the required pressure module and output electrical stimulation mode through the app to complete the treatment. The pressure sensor module monitors the pressure output by the air pump 3 to ensure user safety.

[0067] Using mobile phones, PADs, and other terminal devices with APP software, detection and control commands are sent. External commands are received through the communication module and transmitted to the processor 7. The electrical stimulation module 12 is used to control the output electrical stimulation waveform of the electrode plate 10 on the restraint band body. The processor 7 is connected to the air pump 3 control circuit and outputs a PWM signal to control the air pump 3 to inflate the restraint band body. At the same time, the processor 7 is connected to the solenoid valve control circuit and controls the inflation and deflation of the restraint band cavity by controlling the opening and closing of the solenoid valve. The electrical stimulation module 12 is used to control the output electrical stimulation waveform of the electrode plate 10 on the restraint band body. The air pressure sensor is a detection system that detects the pressure of the restraint band cavity.

[0068] This application provides an electrically stimulated blood flow restriction band, relating to the fields of electrical stimulation and inflation control. It includes a fixation part 6, which is used to wrap around and fix the user's arm for applying pressure; electrode pads 10, which are detachably disposed inside the fixation part 6; an electrical stimulation module 12, with its control end connected to a processor 7 and its output end connected to the electrode pads 10, for outputting electrical stimulation signals to the electrode pads 10; an air pump 3, with its control end connected to the processor 7 and its output end connected to the inflation port of the fixation part 6, for inflating the fixation part 6 to change its pressure; and a processor 7, for receiving user requests and controlling the operation of the electrical stimulation module 12 and the air pump 3 based on those requests. By placing the electrode pads 10 inside the fixation part 6, not only can the fixation part 6 apply pressure to the user's arm, but the electrode pads 10 can also provide electrical stimulation to the user's arm. The two are integrated and used together, simplifying the treatment process.

[0069] Based on the above embodiments:

[0070] Figure 5 A schematic diagram of an electrical stimulation output module provided by this utility model;

[0071] Figure 6 A schematic diagram of an electrical stimulation output structure provided by this utility model;

[0072] In some embodiments, the electrical stimulation module 12 includes an amplification module, a forward switching module, a reverse switching module, and a transformer T1;

[0073] The input terminal of the amplification module is connected to the sine wave output terminal of the processor 7. The input terminal of the forward switching module is connected to the forward disconnect signal output terminal of the processor 7. The input terminal of the reverse switching module is connected to the reverse disconnect signal output terminal of the processor 7. The output terminal of the amplification module is connected to the middle tap of the primary coil of the transformer T1. The output terminal of the forward switching module is connected to the middle tap and the second terminal of the primary coil of the transformer T1 respectively. The output terminal of the reverse switching module is connected to the middle tap and the first terminal of the primary coil of the transformer T1 respectively. The secondary coil of the transformer T1 is connected to the electrode plate 10.

[0074] The amplification module is used to amplify the amplitude of the sine wave signal sent by the processor 7. The forward switching module is used to disconnect the forward frequency of the sine wave signal when the processor 7 sends a forward disconnect signal. The reverse switching module is used to disconnect the reverse frequency of the sine wave signal when the processor 7 sends a reverse disconnect signal. The transformer T1 is used to couple the amplified sine wave signal to the electrode plate 10.

[0075] The electrical stimulation output module uses MCU to generate PWM waveforms with different frequencies and duty cycles as the output model for the electrical stimulation function. By configuring the timer to PWM output mode, PWM output can be generated. The frequency can be set by reloading the value (register setting), and the pulse width can be set by comparing the register, thereby outputting different analog voltage signals.

[0076] Specifically, the processor 7 outputs a sine wave signal to the amplification module, which amplifies the sine wave signal. Furthermore, during the process of signal modulation, a forward on / off control module and a reverse on / off control module are used to process the forward and reverse frequencies of the sine wave signal.

[0077] Taking setting up two filtering modules as an example:

[0078] In some embodiments, the amplification module includes a comparator U1, a first resistor R1, a second resistor R2, a first controllable switch Q1, a first filtering module, and a second filtering module;

[0079] The non-inverting input of the comparator is connected to the output of the processor 7. The inverting input of the comparator is connected to the first end of the first resistor R1 and the first end of the second resistor R2. The second end of the first resistor R1 is connected to the output of the comparator and the first end of the first filter module. The second end of the second resistor R2 is grounded. The second end of the first filter module is connected to the control end of the first controllable switch Q1. The first end of the first controllable switch Q1 is connected to the power supply. The second end of the first controllable switch Q1 is connected to the first end of the second filter module. The second end of the second filter module is connected as the middle tap of the primary winding of the transformer T1.

[0080] The comparator, the first resistor R1, and the second resistor R2 are used to amplify the sine wave signal. The first controllable switch Q1 operates in the amplification range and is used to amplify the sine wave signal a second time. The first filter module and the second filter module are both used for filtering.

[0081] The comparator and the first controllable switch Q1 together perform pulse width amplification. The signal from the processor 7, after digital-to-analog conversion, is amplified by the amplifier composed of the comparator. After passing through the first and second filtering modules, the first controllable switch Q1 is in the amplification region, further amplifying the pulse width signal. The first controllable switch Q1 can be a transistor. The amplified sine wave signal is then output to the transformer T1, which couples the signal to the electrode plate 10.

[0082] In some embodiments, the reverse switching module includes a first switching module, a third resistor R3, and a first diode D1;

[0083] The control terminal of the first switch module is connected to the reverse disconnect signal output terminal of the processor 7. The first terminal of the first switch module is connected to ground. The second terminal of the first switch module is connected to the first terminal of the third resistor R3 and the first terminal of the primary coil of the transformer T1. The second terminal of the third resistor R3 is connected to the anode of the first diode D1. The cathode of the first diode D1 is connected to the middle tap of the primary coil of the transformer T1.

[0084] The first switch module is used to turn off based on the reverse disconnect signal, so that the third resistor R3 and the first diode D1 consume the reverse frequency signal, thereby disconnecting the reverse frequency of the sine wave signal.

[0085] LF01 is the reverse disconnect signal output by processor 7. When the reverse disconnect signal is low, the first switch module is closed, and the reverse frequency of the sine wave signal is turned off through the bleeder circuit composed of the third resistor R3 and the first diode D1, thus controlling the reverse frequency. Similarly, when the reverse disconnect signal is high, the first switch module is turned on, and the reverse frequency of the sine wave signal will not pass through the bleeder circuit composed of the third resistor R3 and the first diode D1, thus allowing the reverse frequency to exist normally.

[0086] In some embodiments, the first switch module includes a second controllable switch Q2, a third controllable switch Q3, a fourth controllable switch Q4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, and a tenth resistor R10.

[0087] The first end of the fifth resistor R5 is connected to the reverse disconnect signal output terminal of the processor 7. The second end of the fifth resistor R5 is connected to the first end of the sixth resistor R6 and the control terminal of the second controllable switch Q2. The first end of the second controllable switch Q2 is connected to the first end of the seventh resistor R7, and the common terminal of the connection is connected to the first end of the eighth resistor R8 and the first end of the third controllable switch Q3. The second end of the seventh resistor R7 is connected to the power supply. The second end of the sixth resistor R6 is connected to the second end of the second controllable switch Q2, and the common terminal of the connection is grounded. The second end of the eighth resistor R8 is connected to the control terminal of the fourth controllable switch Q4. The second end of the fourth controllable switch Q4 is connected to the first end of the ninth resistor R9 and the first end of the tenth resistor R10. The second end of the ninth resistor R9 is connected to the control terminal of the third controllable switch Q3. The second end of the third controllable switch Q3 is connected to the second end of the tenth resistor R10, and the common terminal of the connection is grounded. The first end of the fourth controllable switch Q4 is connected to the first end of the third resistor R3.

[0088] The second controllable switch Q2, the third controllable switch Q3, and the fourth controllable switch Q4 are all used to turn off based on the reverse disconnect signal, so that the third resistor R3 and the first diode D1 consume the reverse frequency signal, thereby disconnecting the reverse frequency of the sine wave signal.

[0089] Specifically, the second controllable switch Q2, the third controllable switch Q3, and the fourth controllable switch Q4 are all MOSFETs that conduct at low levels, and they conduct when the reverse disconnect signal is low.

[0090] In some embodiments, the forward switching module includes a second switching module, a fourth resistor R4, and a second diode D2;

[0091] The control terminal of the second switch module is connected to the positive disconnect signal output terminal of the processor 7. The first terminal of the second switch module is connected to ground. The second terminal of the second switch module is connected to the first terminal of the fourth resistor R4 and the second terminal of the primary coil of the transformer T1. The second terminal of the fourth resistor R4 is connected to the anode of the second diode D2. The cathode of the second diode D2 is connected to the middle tap of the primary coil of the transformer T1.

[0092] The second switching module is used to turn off based on a positive disconnect signal, so that the fourth resistor R4 and the second diode D2 consume the positive frequency signal, thereby disconnecting the positive frequency of the sine wave signal.

[0093] LF01 is the positive disconnect signal output by processor 7. When the positive disconnect signal is low, the second switch module is closed, and the positive frequency of the sine wave signal is turned off through the bleeder circuit composed of the fourth resistor R4 and the second diode D2, thus controlling the positive frequency. Similarly, when the positive disconnect signal is high, the second switch module is turned on, and the positive frequency of the sine wave signal will not pass through the bleeder circuit composed of the fourth resistor R4 and the second diode D2, thus allowing the positive frequency to exist normally.

[0094] In some embodiments, the second switch module includes a fifth controllable switch Q5, a sixth controllable switch Q6, a seventh controllable switch Q7, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, and a sixteenth resistor R16.

[0095] The first end of the eleventh resistor R11 is connected to the positive disconnect signal output terminal of the processor 7. The second end of the eleventh resistor R11 is connected to the first end of the twelfth resistor R12 and the control terminal of the fifth controllable switch Q5. The first end of the fifth controllable switch Q5 is connected to the first end of the thirteenth resistor R13, and the common terminal of the connection is connected to the first end of the fourteenth resistor R14 and the first end of the sixth controllable switch Q6. The second end of the thirteenth resistor R13 is connected to the power supply. The second end of the twelfth resistor R12 is connected to the second end of the fifth controllable switch Q5, and the common terminal of the connection is grounded. The second end of the fourteenth resistor R14 is connected to the control terminal of the seventh controllable switch Q7. The second end of the seventh controllable switch Q7 is connected to the first end of the fifteenth resistor R15 and the first end of the sixteenth resistor R16. The second end of the fifteenth resistor R15 is connected to the control terminal of the sixth controllable switch Q6. The second end of the sixth controllable switch Q6 is connected to the second end of the sixteenth resistor R16, and the common terminal of the connection is grounded. The first end of the seventh controllable switch Q7 is connected to the first end of the third resistor.

[0096] The fifth controllable switch Q5, the sixth controllable switch Q6 and the seventh controllable switch Q7 are all used to turn off based on the positive disconnect signal, so that the fourth resistor R4 and the second diode D2 consume the positive frequency signal, thereby disconnecting the positive frequency of the sine wave signal.

[0097] Specifically, the fifth controllable switch Q5, the sixth controllable switch Q6, and the seventh controllable switch Q7 are all MOSFETs that conduct at low levels, and they conduct when the forward disconnect signal is low.

[0098] Figure 7 A schematic diagram of the structure of a pressure sensor provided by this utility model;

[0099] In some embodiments, a pressure sensor is also included;

[0100] The pressure sensor is located at the air inlet of the fixing part 6 and is connected to the processor 7;

[0101] The pressure sensor is used to collect the pressure inside the fixed part 6, convert the pressure into a voltage signal, and send it to the processor 7.

[0102] The pressure sensor primarily uses the XGZP6857A, which is small in size, highly sensitive, and provides a stable output signal. The pressure acquisition circuit mainly measures the pressure inside the blood flow bag, converts the pressure into a voltage signal, and transmits it to the main processor 7 for processing.

[0103] Figure 8 A schematic diagram of the structure of a first control circuit provided by this utility model;

[0104] In some embodiments, the system further includes a first control circuit, which includes a seventeenth resistor R17, an eighteenth resistor R18, a nineteenth resistor R19, an eighth controllable switch Q8, and a third diode D3.

[0105] The first end of the seventeenth resistor R17 is connected to the output terminal of the processor 7. The second end of the seventeenth resistor R17 is connected to the first end of the eighteenth resistor R18 and the control terminal of the eighth controllable switch Q8. The second end of the eighteenth resistor R18 is connected to the second end of the eighth controllable switch Q8 and the common terminal of the connection is grounded. The first end of the eighteenth resistor R18 is connected to the first end of the nineteenth resistor R19. The second end of the nineteenth resistor R19 is connected to the anode of the third diode D3 and the common terminal of the connection serves as the first output terminal of the first control circuit. The cathode of the third diode D3 is connected to the power supply and the common terminal of the connection serves as the second output terminal of the first control circuit.

[0106] The eighth controllable switch Q8 is used for control of the processor 7 to power the air pump 3, and the third diode D3 is used to protect the air pump 3.

[0107] Taking air pump 3 as an example, the control signal, after being current-limited by the seventeenth resistor R17 to reduce RC oscillation, is directly connected to the gate of the eighth controllable switch Q8 of the MOSFET. The eighteenth resistor R18 is connected in parallel between the gate and source of the MOSFET to reduce the input impedance. The eighteenth resistor R18 serves two purposes: first, to provide bias voltage for the field-effect transistor; and second, to act as a bleeder resistor, protecting the gate (G) and source (S). When the control signal is high, the eighth controllable switch Q8 is turned on, and the nineteenth resistor R19 is connected to GND. At this time, air pump 3 is powered on and begins inflation. The third diode D3 is a freewheeling diode, preventing excessive current when inductive components such as air pump 3 stop working, thus providing protection.

[0108] In some embodiments, a solenoid valve and a second control circuit are also included;

[0109] The control terminal of the second control circuit is connected to the processor 7, the first power supply terminal of the solenoid valve is connected to the power supply, the second power supply terminal of the solenoid valve is connected to the first terminal of the second control circuit, the second terminal of the second control circuit is grounded, the first connection terminal of the solenoid valve is connected to the output terminal of the air pump 3, and the second connection terminal of the solenoid valve is connected to the inflation port of the fixing part 6.

[0110] The second control circuit is used to control the conduction based on the processor 7 to supply power to the solenoid valve, which is used to control the opening degree between the first connection terminal and the second connection terminal.

[0111] The connection method of the second control circuit is the same as that of the first control circuit, and this application does not impose any further restrictions on it here.

[0112] Figure 9 A schematic diagram of the structure of a processor provided by this utility model; Figure 10 This is a schematic diagram of the structure of a decoupling capacitor provided by this utility model; Figure 11 A schematic diagram of a reset control structure provided by this utility model; Figure 12 This is a schematic diagram of a crystal oscillator circuit provided by the present invention;

[0113] The processor's various interfaces are used to connect to various devices to achieve control. Figure 10 The decoupling capacitor is connected in parallel to the power supply. Figure 11 Reset control for the processor interface connected to a resistor. Figure 12 The crystal oscillator circuit connected to the processor is generally used to provide time.

[0114] Furthermore, the MCU receives system setting parameters via the communication module. These parameters include the pressure of the restraint band, treatment time, pressure holding time, and electrical stimulation output waveform frequency and pulse width. The processor 7 collects pressure values ​​from the pressure sensor in real time and adjusts the inflation rate of the air pump 3 and the opening and closing of the solenoid valve by measuring blood pressure through pulse waves to achieve the desired pressure value and maintain the treatment duration. The MCU controls the air pump 3 to inflate to 200 mmHg using PWM output, then slowly deflates at a rate of approximately 5 mmHg per second. The pressure sensor (direct DC output, no hardware distinction required) outputs a signal to the microcontroller's ADC to monitor the DC component and calculate the amplitude. It first finds the maximum amplitude value Amax, then finds the transient position 0.5Amax ahead to correspond to the systolic blood pressure, and the transient position 0.8Amax ahead to correspond to the diastolic blood pressure. Based on the systolic and diastolic blood pressures in a certain ratio, the air pump 3 output is adjusted to inflate and deflate the restraint band airbag until it reaches a stable state. (By monitoring systolic and diastolic blood pressure in real time and dynamically adjusting the output of air pump 3 based on a preset ratio, precise control of the blood flow restriction cuff pressure can be achieved, thereby ensuring the inflation and deflation of the cuff and maintaining its stable state during treatment.) Air pump 3 is controlled to inflate the cuff after treatment begins. According to the selected mode of the sheath setting, the air valve opens to connect the sheath inflation tank, inflating the sheath and sampling the current air pressure value in real time. Once the set pressure is reached, air pump 3 stops inflating. Throughout the process, if the air pressure value is lower than the set value, air pump 3 continues to inflate. If the sheath pressure value is higher than the set value, air pump 3 stops outputting. During the entire adjustment process, the PID controller continuously runs and adjusts the power of air pump 3 to bring the system to a steady state. The electrical stimulation section is activated when the sheath reaches the set pressure and begins to hold the pressure. Taking a holding time of 10 minutes and an electrical stimulation intensity of 99 levels as an example, the slope of the electrical stimulation intensity curve is determined by the holding time and the electrical stimulation itself. The electrical stimulation slope can be adjusted according to different electrical stimulation intensities. The electrical stimulation intensity output settings are configured via an app on mobile phones, tablets, or other terminal devices, including parameters such as frequency and pulse width.

[0115] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0116] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, article, or apparatus that includes said element.

[0117] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A blood flow restriction band with electrical stimulation, characterized in that, include: A fixing part is used to surround and fix the user's treatment site, and to apply pressure to the treatment site; Electrode sheet, wherein the electrode sheet is detachably disposed on the inner side of the fixing part; An electrical stimulation module, with its control terminal connected to a processor and its output terminal connected to the electrode pads, is used to output electrical stimulation signals to the electrode pads. An air pump, with its control end connected to the processor and its output end connected to the inflation port of the fixing part, is used to inflate the fixing part to change the pressure of the fixing part; The processor is used to receive user requests and control the operation of the electrical stimulation module and the air pump based on the user requests.

2. The electrically stimulated blood flow restriction band as described in claim 1, characterized in that, The electrical stimulation module includes an amplification module, a forward switching module, a reverse switching module, and a transformer. The input terminal of the amplification module is connected to the sine wave output terminal of the processor; the input terminal of the forward switching module is connected to the forward disconnect signal output terminal of the processor; the input terminal of the reverse switching module is connected to the reverse disconnect signal output terminal of the processor; the output terminal of the amplification module is connected to the center tap of the primary winding of the transformer; the output terminal of the forward switching module is connected to the center tap and the second terminal of the primary winding of the transformer; the output terminal of the reverse switching module is connected to the center tap and the first terminal of the primary winding of the transformer; and the secondary winding of the transformer is connected to the electrode plate. The amplification module is used to amplify the amplitude of the sine wave signal sent by the processor. The forward switching module is used to disconnect the forward frequency of the sine wave signal when the processor sends a forward disconnect signal. The reverse switching module is used to disconnect the reverse frequency of the sine wave signal when the processor sends a reverse disconnect signal. The transformer is used to couple the amplified sine wave signal to the electrode plate.

3. The electrically stimulated blood flow restriction band as described in claim 2, characterized in that, The amplification module includes a comparator, a first resistor, a second resistor, and a first controllable switch; The non-inverting input of the comparator is connected to the output of the processor. The inverting input of the comparator is connected to the first end of the first resistor and the first end of the second resistor. The second end of the first resistor is connected to the output of the comparator and the control end of the first controllable switch. The second end of the second resistor is grounded. The first end of the first controllable switch is connected to the power supply. The second end of the first controllable switch is connected to the center tap of the primary winding of the transformer. The comparator, the first resistor, and the second resistor are used to amplify the sine wave signal. The first controllable switch operates in the amplification range and is used to amplify the sine wave signal a second time.

4. The electrically stimulated blood flow restriction band as described in claim 2, characterized in that, The reverse switching module includes a first switch module, a third resistor, and a first diode; The control terminal of the first switch module is connected to the reverse disconnect signal output terminal of the processor. The first terminal of the first switch module is connected to ground. The second terminal of the first switch module is connected to the first terminal of the third resistor and the first terminal of the primary winding of the transformer. The second terminal of the third resistor is connected to the anode of the first diode. The cathode of the first diode is connected to the center tap of the primary winding of the transformer. The first switch module is used to turn off based on the reverse disconnect signal, so that the third resistor and the first diode consume the reverse frequency signal, thereby disconnecting the reverse frequency of the sine wave signal.

5. The charged stimulation tourniquet of claim 4, wherein, The first switch module includes a second controllable switch, a third controllable switch, a fourth controllable switch, a sixth resistor, a seventh resistor, and a tenth resistor; The reverse disconnect signal output terminal of the processor is connected to the first terminal of the sixth resistor and the control terminal of the second controllable switch, respectively. The first terminal of the second controllable switch is connected to the first terminal of the seventh resistor, the first terminal of the third controllable switch and the control terminal of the fourth controllable switch. The second terminal of the seventh resistor is connected to the power supply. The second terminal of the sixth resistor is connected to the second terminal of the second controllable switch and the common terminal of the connection is grounded. The second terminal of the fourth controllable switch is connected to the first terminal of the tenth resistor and the control terminal of the third controllable switch. The second terminal of the third controllable switch is connected to the second terminal of the tenth resistor and the common terminal of the connection is grounded. The first terminal of the fourth controllable switch is connected to the first terminal of the third resistor. The second controllable switch, the third controllable switch, and the fourth controllable switch are all used to turn off based on the reverse disconnect signal, so that the third resistor and the first diode consume the reverse frequency signal, thereby disconnecting the reverse frequency of the sine wave signal.

6. The charged stimulation tourniquet of claim 2, wherein, The forward switching module includes a second switching module, a fourth resistor, and a second diode; The control terminal of the second switch module is connected to the positive disconnect signal output terminal of the processor. The first terminal of the second switch module is connected to ground. The second terminal of the second switch module is connected to the first terminal of the fourth resistor and the second terminal of the primary winding of the transformer. The second terminal of the fourth resistor is connected to the anode of the second diode. The cathode of the second diode is connected to the center tap of the primary winding of the transformer. The second switch module is used to turn off based on the positive disconnect signal, so that the fourth resistor and the second diode consume the positive frequency signal, thereby disconnecting the positive frequency of the sine wave signal.

7. The charged stimulation tourniquet of claim 6, wherein, The second switch module includes a fifth controllable switch, a sixth controllable switch, a seventh controllable switch, a twelfth resistor, a thirteenth resistor, and a sixteenth resistor; The processor's positive disconnect signal output terminal is connected to the first terminal of the twelfth resistor and the control terminal of the fifth controllable switch, respectively. The first terminal of the fifth controllable switch is connected to the first terminal of the thirteenth resistor, the first terminal of the sixth controllable switch, and the control terminal of the seventh controllable switch. The second terminal of the thirteenth resistor is connected to the power supply. The second terminal of the twelfth resistor is connected to the second terminal of the fifth controllable switch, and the common terminal of the connection is grounded. The second terminal of the seventh controllable switch is connected to the first terminal of the sixteenth resistor and the control terminal of the sixth controllable switch. The second terminal of the sixth controllable switch is connected to the second terminal of the sixteenth resistor, and the common terminal of the connection is grounded. The first terminal of the seventh controllable switch is connected to the first terminal of the third resistor. The fifth, sixth, and seventh controllable switches are all used to turn off based on the positive disconnect signal, so that the fourth resistor and the second diode consume the positive frequency signal, thereby disconnecting the positive frequency of the sine wave signal.

8. The charged stimulation tourniquet of claim 1, wherein, It also includes pressure sensors; The pressure sensor is located at the air inlet of the fixing part and is connected to the processor; The pressure sensor is used to collect the pressure inside the fixed part, convert the pressure into a voltage signal, and send it to the processor.

9. The charged stimulation tourniquet of claim 1, wherein, It also includes a first control circuit, which includes a seventeenth resistor, an eighteenth resistor, a nineteenth resistor, an eighth controllable switch, and a third diode; The first end of the seventeenth resistor is connected to the output terminal of the processor. The second end of the seventeenth resistor is connected to the first end of the eighteenth resistor and the control terminal of the eighth controllable switch. The second end of the eighteenth resistor is connected to the second end of the eighth controllable switch, and the common terminal of the connection is grounded. The first end of the eighteenth resistor is connected to the first end of the nineteenth resistor. The second end of the nineteenth resistor is connected to the anode of the third diode, and the common terminal of the connection serves as the first output terminal of the first control circuit. The cathode of the third diode is connected to the power supply, and the common terminal of the connection serves as the second output terminal of the first control circuit. The eighth controllable switch is used to turn on the air pump based on the control of the processor, and the third diode is used to protect the air pump.

10. The electrically stimulated blood flow restriction band as described in any one of claims 1 to 9, characterized in that, It also includes solenoid valves and a second control circuit; The control terminal of the second control circuit is connected to the processor, the first power supply terminal of the solenoid valve is connected to the power supply, the second power supply terminal of the solenoid valve is connected to the first terminal of the second control circuit, the second terminal of the second control circuit is grounded, the first connection terminal of the solenoid valve is connected to the output terminal of the air pump, and the second connection terminal of the solenoid valve is connected to the inflation port of the fixed part. The second control circuit is used to supply power to the solenoid valve based on the control of the processor, and the solenoid valve is used to control the opening degree between the first connection terminal and the second connection terminal.

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