Self-checking device for shock wave therapeutic apparatus

Abstract

The utility model discloses a shock wave therapeutic instrument self-checking device which is electrically connected with an electromagnetic focusing type shock wave therapeutic instrument comprising a therapeutic instrument body, a water pump and a water tank, the therapeutic instrument body comprises a therapeutic head, and a water bag of the therapeutic head is communicated with the water tank through a water pipe. The shock wave therapeutic apparatus self-checking device comprises a control module and a sampling circuit which is connected with a therapeutic apparatus main body and is used for collecting output pulse voltage information of the therapeutic apparatus main body. The water pump detection module is connected with the water pump and used for detecting the state of the water pump, the water tank detection module is connected with the water tank and used for detecting the air pressure of the water tank to obtain the state of the water bag, and the control module is electrically connected with the sampling circuit, the water pump detection module and the water tank detection module. According to the shock wave therapeutic instrument self-checking device, the control module, the sampling circuit, the water pump detection module and the water tank detection module are arranged, the sampling circuit, the water pump detection module and the water tank detection module are respectively connected with the therapeutic instrument body, the water pump and the water tank of the electromagnetic focusing type shock wave therapeutic instrument, conditions of the therapeutic instrument can be known in time, and self-checking is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of therapeutic instrument detection and control, in particular to a self-checking device for a shock wave therapeutic instrument. Background Art

[0002] The impact energy of electromagnetic focusing shock waves mainly comes from the pulsed current generated by the instantaneous discharge of a high-voltage capacitor to an inductance coil, forming a very strong pulsed magnetic field, which makes the diaphragm covered on the coil induce a magnetic field. The magnetic field of the diaphragm interacts with the magnetic field of the coil to generate a repulsive force, forming a shock wave on the other side of the diaphragm in the water medium. The diaphragm may undergo deformation or perforation due to long-term mechanical vibration. During the use of the machine, heat is generated. If the heat accumulation is too high, the machine is easily damaged, and water circulation is required to remove the heat. If the water pump cannot work properly, it will damage the machine. Moreover, the water leakage of the water bag of the treatment head poses a risk of electric shock to patients. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a self-checking device for a shock wave therapeutic instrument to monitor the state of an electromagnetic focusing shock wave therapeutic instrument and improve safety.

[0004] To solve the above technical problem, the purpose of the utility model is achieved through the following technical solutions: providing a self-checking device for a shock wave therapeutic instrument, electrically connected to an electromagnetic focusing shock wave therapeutic instrument. The electromagnetic focusing shock wave therapeutic instrument includes a therapeutic instrument main body, a water pump and a water tank. The therapeutic instrument main body includes a treatment head, and the water bag of the treatment head is communicated with the water tank through a water pipe. The self-checking device for the shock wave therapeutic instrument includes a sampling circuit, a water pump detection module, a water tank detection module and a control module. The sampling circuit is connected to the therapeutic instrument main body for collecting the output pulse voltage information of the therapeutic instrument main body; the water pump detection module is connected to the water pump for detecting the state of the water pump; the water tank detection module is connected to the water tank for detecting the air pressure of the water tank to obtain the state of the water bag; the control module is electrically connected to the sampling circuit, the water pump detection module and the water tank detection module.

[0005] The beneficial technical effects of the present utility model are as follows: The self-checking device of the shock wave therapeutic apparatus of the present utility model is provided with a control module, a sampling circuit, a water pump detection module and a water tank detection module which are respectively connected to the main body of the therapeutic apparatus, the water pump and the water tank of the electromagnetic focusing shock wave therapeutic apparatus, and the control module is electrically connected to the sampling circuit, the water pump detection module and the water tank detection module, so as to know the state of the water bag of the treatment head of the main body of the therapeutic apparatus according to the air pressure of the water tank obtained by collection, and combine the output pulse voltage information of the main body of the therapeutic apparatus and the state of the water pump obtained by collection, the situation of the water bag can be monitored in real time to avoid the problem of electric leakage when the therapeutic apparatus still works normally when the water bag is in a leaking state, the output of the therapeutic apparatus can be monitored in real time to monitor the state of the diaphragm of the treatment head, the state of the water pump can be monitored in real time to know the working condition of the water circulation, so as to prevent the therapeutic apparatus from being damaged by overheating, timely and effectively know the situation of the electromagnetic focusing shock wave therapeutic apparatus, adjust and control the abnormal therapeutic apparatus, realize the self-checking function, and improve the safety of the therapeutic apparatus during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0007] Figure 1 FIG. is a schematic framework diagram when the self-checking device of the shock wave therapeutic apparatus provided by the embodiment of the present utility model is connected to the electromagnetic focusing shock wave therapeutic apparatus;

[0008] Figure 2 FIG. is a circuit diagram of the sampling circuit of the self-checking device of the shock wave therapeutic apparatus provided by the embodiment of the present utility model connected to the control module;

[0009] Figure 3 FIG. is a circuit diagram of the water pump detection module of the self-checking device of the shock wave therapeutic apparatus provided by the embodiment of the present utility model;

[0010] Figure 4 FIG. is a circuit diagram of the water tank detection module of the self-checking device of the shock wave therapeutic apparatus provided by the embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0011] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the protection scope of the present utility model.

[0012] Please refer to Figures 1 to 4 , Figure 1 which is a schematic framework diagram when the self-checking device of the shock wave therapy instrument provided by the embodiment of the present utility model is connected to an electromagnetic focusing shock wave therapy instrument. The self-checking device 10 of the shock wave therapy instrument is electrically connected to the electromagnetic focusing shock wave therapy instrument 20. The electromagnetic focusing shock wave therapy instrument 20 includes a therapy instrument main body 21, a water pump 22 and a water tank 23. The therapy instrument main body 21 includes a treatment head 211. The water sac of the treatment head 211 is communicated with the water tank 23 through a water pipe. The self-checking device 10 of the shock wave therapy instrument includes a sampling circuit 11, a water pump detection module, a water tank detection module and a control module 12. The sampling circuit 11 is connected to the therapy instrument main body 21 for collecting the output pulse voltage information of the therapy instrument main body 21. The water pump detection module is connected to the water pump 22 for detecting the state of the water pump 22. The water tank detection module is connected to the water tank 23 for detecting the air pressure of the water tank 23 to obtain the state of the water sac. The control module 12 is electrically connected to the sampling circuit 11, the water pump detection module and the water tank detection module.

[0013] Among them, the water sac of the treatment head 211 is connected to the water tank 23 through a water pipe, the water sac of the treatment head 211 is connected to the water pump 22 through a water pipe, the water pump 22 is connected to the water tank 23 through a water pipe, and a loop is formed between the water sac of the treatment head 211 and the water tank 23 through the water pipe and the water pump 22, so as to carry out water circulation, which can take away the heat generated during the use of the therapeutic instrument and avoid damaging the therapeutic instrument due to excessive temperature. The control module 12 can be communicatively connected to the host computer 30, and the host computer 30 can be electrically connected to the electromagnetic focusing shock wave therapeutic instrument 20, so that the control module 12 can store, analyze and process the detected information and send a control signal to the host computer 30, which is beneficial for the user to know the state of the electromagnetic focusing shock wave therapeutic instrument 20 through the host computer 30 and control the corresponding electromagnetic focusing shock wave therapeutic instrument 20 to work according to the control signal. The shock wave therapeutic instrument self-checking device 10 is provided with a control module 12 and a sampling circuit 11, a water pump detection module and a water tank detection module respectively connected to the therapeutic instrument main body 21, the water pump 22 and the water tank 23 of the electromagnetic focusing shock wave therapeutic instrument 20, and the control module 12 is electrically connected to the sampling circuit 11, the water pump detection module and the water tank detection module, so as to know the state of the water sac of the treatment head 211 of the therapeutic instrument main body 21 according to the air pressure of the water tank 23 obtained by collection. Combining the output pulse voltage information of the therapeutic instrument main body 21 and the state of the water pump 22 obtained by collection, the situation of the water sac can be monitored in real time to avoid the problem of electric leakage when the therapeutic instrument still works normally when the water sac is in a leaking state. The output of the therapeutic instrument can be monitored in real time to monitor the state of the diaphragm of the treatment head 211. The state of the water pump 22 can be monitored in real time to know the working condition of the water circulation, so as to prevent the therapeutic instrument from being damaged by overheating, timely and effectively know the situation of the electromagnetic focusing shock wave therapeutic instrument 20, adjust and control the abnormal therapeutic instrument, realize the self-checking function, and improve the safety during the use of the therapeutic instrument. Of course, in some embodiments, the control module 12 of the shock wave therapeutic instrument self-checking device 10 can be directly electrically connected to the main control module of the electromagnetic focusing shock wave therapeutic instrument 20, so that the control module 12 can store, analyze and process the detected information and send a control signal to the main control module to control the corresponding electromagnetic focusing shock wave therapeutic instrument 20 to work.

[0014] Specifically, in this embodiment, the main body 21 of the therapeutic instrument further includes a thyristor Q201 and a discharge capacitor C201. The discharge capacitor C201 is connected to the treatment head 211 through the thyristor Q201. The sampling circuit 11 includes a Rogowski coil RC1, a rectifying unit 111, a voltage dividing unit 112, an isolation analog-to-digital converter 113, and a differential amplifier U3B connected in sequence. The Rogowski coil RC1 is sleeved on the cable where one end of the coil of the treatment head 211 is connected to the thyristor Q201 to generate an induced current. The differential amplifier U3B is electrically connected to the control module 12. Among them, the control electrode of the thyristor Q201 is connected to the main control module of the electromagnetic focusing shock wave therapeutic instrument 20. The anode of the thyristor Q201 is connected to one end of the discharge capacitor C201. The cathode of the thyristor Q201 is connected to one end of the coil of the treatment head 211. The Rogowski coil RC1 is sleeved on the cable where one end of the coil of the treatment head 211 is connected to the cathode of the thyristor Q201. When the discharge capacitor C201 discharges to the thyristor Q201, the main control module of the therapeutic instrument controls the thyristor Q201 to conduct. The cathode of the thyristor Q201 outputs an electrical signal, and the Rogowski coil RC1 generates an induced current and transmits it to the rectifying unit 111. The rectifying unit 111 is used to rectify the induced current output by the Rogowski coil RC1 to obtain direct current. The rectifying unit 111 transmits the obtained direct current to the isolation analog-to-digital converter 113 through the voltage dividing unit 112 for analog-to-digital conversion and isolation to obtain an isolated electrical signal. The isolation analog-to-digital converter 113 transmits the obtained isolated electrical signal to the differential amplifier U3B to obtain the output pulse voltage information and output it to the control module 12. The control module 12 compares the obtained output pulse voltage information with a preset self-check pulse voltage threshold to obtain a comparison result and controls the therapeutic instrument according to the comparison result. When the obtained output pulse voltage information is greater than the preset self-check pulse voltage threshold and less than the preset maximum energy output value, the comparison result is that the energy output is normal. The control module 12 can output a control signal to the host computer 30 to control the corresponding electromagnetic focusing shock wave therapeutic instrument 20 to work; otherwise, the comparison result is that the energy output is abnormal. The control module 12 triggers an energy output abnormal alarm, and the control module 12 controls the corresponding electromagnetic focusing shock wave therapeutic instrument 20 to stop working, improving the safety and reliability of the therapeutic instrument. Moreover, the control module 12 can also judge whether the output pulse voltage information meets the preset pulse voltage threshold corresponding to the energy level according to the obtained output pulse voltage information combined with the energy level input by the user. If not, it is judged that the energy output is abnormal. The control module 12 triggers an energy output abnormal alarm, and the control module 12 controls the corresponding electromagnetic focusing shock wave therapeutic instrument 20 to stop working. One end of the Rogowski coil RC1 is connected to the cathode of the third diode D3. The anode of the third diode D3 is connected to the anode of the sixth zener diode D6. The cathode of the sixth zener diode D6 is connected to the other end of the Rogowski coil RC1.The control module 12 includes an MCU, and the sampling circuit 11, the water pump detection module, and the water tank detection module are electrically connected to the MCU.

[0015] Preferably, in this embodiment, the treatment instrument main body 21 further includes a connection diode D201 connected in parallel with the thyristor Q201. The cathode of the connection diode D201 is connected to the anode of the thyristor Q201, and the anode of the connection diode D201 is connected to the cathode of the thyristor Q201. Both ends of the discharge capacitor C201 can be connected to the power supply of the treatment instrument.

[0016] Specifically, in this embodiment, the rectification unit 111 includes a rectifier bridge, the voltage division unit 112 includes a first voltage division resistor R2 and a second voltage division resistor R4 connected in series, the isolation analog-to-digital converter 113 includes a voltage follower U2B and an isolation amplifier U4. The two ends of the Rogowski coil RC1 are respectively connected to the first AC input terminal and the second AC input terminal of the rectifier bridge. The negative DC output terminal of the rectifier bridge is grounded, and the positive DC output terminal of the rectifier bridge is connected to the first end of the first voltage division resistor R2. The second end of the first voltage division resistor R2 is connected to the first end of the second voltage division resistor R4. The second end of the second voltage division resistor R4 is grounded. The non-inverting input terminal of the voltage follower U2B is connected to the second end of the first voltage division resistor R2 and the first end of the second voltage division resistor R4 after passing through a third resistor R3. The inverting input terminal of the voltage follower U2B is connected to the output terminal of the voltage follower U2B after passing through a connection resistor R1. The output terminal of the voltage follower U2B is connected to the voltage input pin VIN of the isolation amplifier U4. The positive output pin VOUTP of the isolation amplifier U4 is connected to the non-inverting input terminal of the differential amplifier U3B after passing through an eleventh resistor R11. The negative output pin VOUTN of the isolation amplifier U4 is connected to the inverting input terminal of the differential amplifier U3B after passing through a ninth resistor R9. The output terminal of the differential amplifier U3B is connected to the control module 12 after passing through a tenth resistor R10. The first operating voltage pin VDD1 of the isolation amplifier U4 is connected to the first circuit voltage VCC1, and a plurality of ground capacitors are connected in parallel between the first operating voltage pin VDD1 of the isolation amplifier U4 and the first circuit voltage VCC1. The second operating voltage pin VDD2 of the isolation amplifier U4 is connected to the second circuit voltage VCC2, and a plurality of ground capacitors are connected in parallel between the second operating voltage pin VDD2 of the isolation amplifier U4 and the second circuit voltage VCC2. By setting ground capacitors between the circuit voltage and the operating voltage pins of the isolation amplifier U4, the power supply of the isolation amplifier U4 is filtered. By setting the isolation amplifier U4, voltage signals can be isolated to prevent damage to the control module 12, and the isolation amplifier U4 has stronger electromagnetic interference resistance. The rectifier bridge includes a first diode D1, a second diode D2, a fourth diode D4, and a fifth diode D5. A first ground capacitor C1 and a first grounded electrolytic capacitor CE1 are connected in parallel between the positive DC output terminal of the rectifier bridge and the first voltage division resistor R2. The second voltage division resistor R4 is connected in parallel with a third capacitor C3. Then, the first end of the third capacitor C3 is connected to the second end of the first voltage division resistor R2, and the second end of the third capacitor C3 is grounded.

[0017] Preferably, three ground capacitors, namely the eighth ground capacitor C8, the tenth ground capacitor C10, and the twelfth ground capacitor C12, are connected in parallel between the first operating voltage pin VDD1 of the isolation amplifier U4 and the first circuit voltage VCC1. Three ground capacitors, namely the ninth ground capacitor C9, the eleventh ground capacitor C11, and the thirteenth ground capacitor C13, are connected in parallel between the second operating voltage pin VDD2 of the isolation amplifier U4 and the second circuit voltage VCC2. The shutdown pin SHTDN and the ground pin of the isolation amplifier U4 are grounded. The isolation amplifier U4 can adopt an operational amplifier of model AMC1311. A fourth ground capacitor C4 is connected in parallel between the non-inverting input terminal of the voltage follower U2B and the third resistor R3. A clamping circuit U1 is electrically connected between the third resistor R3 and the non-inverting input terminal of the voltage follower U2B. The clamping circuit U1 can be BAT54S to clamp the voltage input to the non-inverting input terminal of the voltage follower U2B through the third resistor R3. The clamping circuit U1 includes two diodes connected in series in sequence. The cathode of one of the diodes in the clamping circuit U1 is connected to the first circuit voltage VCC1, the anode of this diode is connected to the cathode of the other diode and the non-inverting input terminal of the voltage follower U2B, and the anode of the other diode is grounded. The diodes in the clamping circuit U1 can be zener diodes. A second ground capacitor C2 can be connected in parallel to the output terminal of the voltage follower U2B.

[0018] Specifically, in this embodiment, the non-inverting input terminal of the differential amplifier U3B is connected to the output terminal of the third operational amplifier U3A through the seventh resistor R7 and the sixth capacitor C6 connected in parallel with each other. The inverting input terminal of the differential amplifier U3B is connected to the output terminal of the differential amplifier U3B through the twelfth resistor R12 and the fourteenth capacitor C14 connected in parallel with each other. The non-inverting input terminal of the third operational amplifier U3A is connected to the ground and the first end of the seventh capacitor C7. The second end of the seventh capacitor C7 is connected to the first end of the tenth resistor R10 and the control module 12. The second end of the tenth resistor R10 is connected to the output terminal of the differential amplifier U3B. The inverting input terminal of the third operational amplifier U3A is connected to the output terminal of the third operational amplifier U3A. The two ends of the sixth capacitor C6 are respectively connected to the output terminal of the third operational amplifier U3A and the non-inverting input terminal of the differential amplifier U3B. The two ends of the seventh resistor R7 are respectively connected to the output terminal of the third operational amplifier U3A and the non-inverting input terminal of the differential amplifier U3B. The third operational amplifier U3A is a follower. The differential amplifier U3B is connected to the ground through the third operational amplifier U3A to prevent the ground signal from interfering with the differential amplifier U3B and provide a ground path with less interference. The two ends of the fourteenth capacitor C14 are respectively connected to the output terminal of the differential amplifier U3B and the inverting input terminal of the differential amplifier U3B. The two ends of the twelfth resistor R12 are respectively connected to the output terminal of the differential amplifier U3B and the non-inverting input terminal of the differential amplifier U3B.

[0019] Preferably, a second clamping circuit U5 is electrically connected to the output terminal of the differential amplifier U3B. The second clamping circuit U5 can be BAT54S to clamp the output voltage of the differential amplifier U3B. The second clamping circuit U5 includes two diodes connected in series in sequence. The cathode of one of the diodes in the second clamping circuit U5 is connected to the second circuit voltage VCC2. The anode of this diode is connected to the cathode of the other diode and the output terminal of the differential amplifier U3B. The anode of the other diode is grounded. The diodes in the second clamping circuit U5 can be zener diodes. The tenth resistor R10 is electrically connected between the output terminal of the differential amplifier U3B and the second clamping circuit U5.

[0020] Specifically, in this embodiment, the water pump detection module includes a water flow sensor J1. The water flow sensor J1 is connected to the water pump 22. The data output terminal of the water flow sensor J1 is connected to the control module 12 through the sixth resistor R6 and the first switching tube Q1. The positive terminal of the water flow sensor J1 is connected to the second circuit voltage VCC2. The negative terminal of the water flow sensor J1 is grounded. The positive and negative terminals of the water flow sensor J1 are respectively connected to both ends of the fifth capacitor C5. The data output terminal of the water flow sensor J1 and one end of the sixth resistor R6 are connected to the cathode of the seventh diode D7 with the anode grounded. One end of the eighth resistor R8 grounded is connected in parallel between the other end of the sixth resistor R6 and the control terminal of the first switching tube Q1. By setting the water flow sensor J1 to detect the state of the water pump 22 and feedback it to the control module 12 to determine whether there is water flow, thereby knowing whether the water circulation is working properly. The control module 12 controls the operation of the electromagnetic focusing shock wave therapy instrument 20 according to the detection result of the water pump 22. When it is determined that there is no water flow, the water circulation fails to work properly. The control module 12 triggers a water circulation alarm, and the control module 12 controls the electromagnetic focusing shock wave therapy instrument 20 to stop working; when it is determined that there is water flow, the water circulation is normal.

[0021] Specifically, in this embodiment, the water flow sensor J1 is a Hall flow sensor. When there is water flow, the water flow sensor J1 outputs a high-level square wave signal. The high-level square wave signal is converted into a 3.3V square wave signal by the first switching tube Q1 and transmitted to the control module 12.

[0022] Specifically, in this embodiment, the first switching tube Q1 is an NMOS tube. The gate of the first switching tube Q1 is connected to the data output terminal of the water flow sensor J1 through the sixth resistor R6. The source of the first switching tube Q1 is grounded. The drain of the first switching tube Q1 is connected to one end of the fifth resistor R5 and the control module 12. The other end of the fifth resistor R5 is connected to the second circuit voltage VCC2.

[0023] Specifically, in this embodiment, the water tank detection module includes a barometric pressure sensor J2. The barometric pressure sensor J2 is connected to the water tank 23 and electrically connected to the control module 12 to detect the barometric pressure of the water tank 23. The control module 12 can compare the barometric pressure of the water tank 23 detected by the barometric pressure sensor J2 with the preset atmospheric pressure to determine whether the barometric pressure of the water tank 23 is greater than the preset atmospheric pressure. If not, it is determined that the water bladder is damaged and there is a water leakage phenomenon. The control module 12 triggers a water bladder alarm and controls the electromagnetic focusing shock wave therapy instrument 20 to stop working.

[0024] Specifically, in this embodiment, the signal output terminal of the barometric pressure sensor J2 is connected to the non-inverting input terminal of the sixth operational amplifier U6A after passing through the fifteenth resistor R15. The output terminal of the sixth operational amplifier U6A is connected to the control module 12 after passing through the sixteenth resistor R16. The output terminal of the sixth operational amplifier U6A is connected to the inverting input terminal of the sixth operational amplifier U6A through the fourteenth resistor R14. A thirteenth grounding resistor R13 is connected in parallel between the inverting input terminal of the sixth operational amplifier U6A and the fourteenth resistor R14. Preferably, a mutually parallel seventeenth grounding resistor R17, seventeenth grounding capacitor C17, eighteenth grounding capacitor C18, and a bidirectional transient voltage suppression diode D8 with one end grounded are connected in parallel between the signal output terminal of the barometric pressure sensor J2 and the fifteenth resistor R15.

[0025] Specifically, in this embodiment, the barometric pressure sensor J2 is a silicon pressure transmitter with high waterproof accuracy.

[0026] In summary, the self-checking device of the shock wave therapy instrument of the present utility model realizes the self-checking function and improves the safety during the use of the therapy instrument by setting a control module and a sampling circuit, a water pump detection module, and a water tank detection module respectively connected to the main body of the therapy instrument, the water pump, and the water tank of the electromagnetic focusing shock wave therapy instrument, and electrically connecting the control module to the sampling circuit, the water pump detection module, and the water tank detection module. It can know the state of the water bladder of the treatment head of the main body of the therapy instrument according to the barometric pressure of the water tank obtained by collection, and in combination with the output pulse voltage information of the main body of the therapy instrument and the state of the water pump obtained by collection, it can monitor the situation of the water bladder in real time to avoid the problem of electric leakage when the therapy instrument still works normally when the water bladder is in a water leakage state. It can monitor whether the output of the therapy instrument is abnormal in real time to monitor the state of the diaphragm of the treatment head. It can monitor the state of the water pump in real time to know the working condition of the water circulation to prevent the therapy instrument from being damaged by overheating, and timely and effectively know the situation of the electromagnetic focusing shock wave therapy instrument, and adjust and control the abnormal therapy instrument.

[0027] As described above, it is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A self-test device for a shock wave therapy apparatus, characterized in that: The device is electrically connected to an electromagnetic focused shock wave therapeutic apparatus, wherein the electromagnetic focused shock wave therapeutic apparatus comprises a therapeutic apparatus body, a water pump and a water tank, wherein the therapeutic apparatus body comprises a therapeutic head, and the water bag of the therapeutic head is connected to the water tank through a water pipe. The self-checking device of the shock wave therapeutic apparatus comprises a sampling circuit, a water pump detection module, a water tank detection module and a control module, wherein the sampling circuit is connected to the therapeutic apparatus body and is used to collect output pulse voltage information of the therapeutic apparatus body; the water pump detection module is connected to the water pump and is used to detect the state of the water pump; the water tank detection module is connected to the water tank and is used to detect the air pressure of the water tank to obtain the state of the water bag; and the control module is electrically connected to the sampling circuit, the water pump detection module and the water tank detection module.

2. The self-checking device of the shock wave therapy apparatus according to claim 1, characterized in that: The therapeutic instrument body also includes a thyristor and a discharge capacitor, the discharge capacitor is connected to the treatment head through the thyristor, the sampling circuit includes a Rogowski coil, a rectifier unit, a voltage divider unit, an isolated analog-to-digital converter and a differential amplifier connected in sequence, the Rogowski coil is sleeved on a cable connected to the thyristor at one end of the coil of the treatment head, and the differential amplifier is electrically connected to the control module.

3. The self-checking device of the shock wave therapy apparatus according to claim 2, characterized in that: The rectifier unit includes a rectifier bridge, the voltage divider unit includes a first voltage divider resistor and a second voltage divider resistor connected in series, the isolated analog-to-digital converter includes a voltage follower and an isolation amplifier, the two ends of the Rogowski coil are respectively connected to the first AC input end and the second AC input end of the rectifier bridge, the negative DC output end of the rectifier bridge is grounded, the positive DC output end of the rectifier bridge is connected to the first end of the first voltage divider resistor, the second end of the first voltage divider resistor is connected to the first end of the second voltage divider resistor, the second end of the second voltage divider resistor is grounded, the in-phase input end of the voltage follower is connected to the second end of the first voltage divider resistor and the first end of the second voltage divider resistor through a third resistor, the inverting input end of the voltage follower is connected to the output end of the voltage follower through a connecting resistor, the output end of the voltage follower is connected to the voltage input pin of the isolation amplifier, the positive output pin of the isolation amplifier is connected to the in-phase input end of the differential amplifier through an eleventh resistor, the negative output pin of the isolation amplifier is connected to the inverting input end of the differential amplifier through a ninth resistor, and the output end of the differential amplifier is connected to the control module through a tenth resistor.

4. The self-checking device of the shock wave therapy apparatus according to claim 3, characterized in that: The non-inverting input terminal of the differential amplifier is connected to the output terminal of the third operational amplifier through a seventh resistor and a sixth capacitor connected in parallel to each other, the inverting input terminal of the differential amplifier is connected to the output terminal of the differential amplifier through a twelfth resistor and a fourteenth capacitor connected in parallel to each other, the non-inverting input terminal of the third operational amplifier is connected to the ground and the first terminal of the seventh capacitor, the second terminal of the seventh capacitor is connected to the first terminal of the tenth resistor and the control module, the second terminal of the tenth resistor is connected to the output terminal of the differential amplifier, and the inverting input terminal of the third operational amplifier is connected to the output terminal of the third operational amplifier.

5. The self-checking device of the shock wave therapy apparatus according to claim 1, characterized in that: The water pump detection module includes a water flow sensor, which is connected to the water pump. The data output end of the water flow sensor is connected to the control module through a sixth resistor and a first switch tube.

6. The self-checking device for shock wave therapy apparatus according to claim 5, characterized in that: The water flow sensor is a Hall flow sensor.

7. The self-checking device for shock wave therapy apparatus according to claim 5, characterized in that: The first switch tube is an NMOS tube, the gate of the first switch tube is connected to the data output end of the water flow sensor through the sixth resistor, the source of the first switch tube is grounded, the drain of the first switch tube is connected to one end of the fifth resistor and the control module, and the other end of the fifth resistor is connected to the second circuit voltage.

8. The self-checking device for shock wave therapy apparatus according to claim 1, characterized in that: The water tank detection module includes an air pressure sensor, which is connected to the water tank and electrically connected to the control module to detect the air pressure of the water tank.

9. The self-checking device for shock wave therapy apparatus according to claim 8, characterized in that: The signal output end of the air pressure sensor is connected to the non-inverting input end of the sixth operational amplifier through the fifteenth resistor, the output end of the sixth operational amplifier is connected to the control module through the sixteenth resistor, the output end of the sixth operational amplifier is connected to the inverting input end of the sixth operational amplifier through the fourteenth resistor, and a thirteenth grounding resistor is connected in parallel between the inverting input end of the sixth operational amplifier and the fourteenth resistor.

10. The self-checking device for shock wave therapy apparatus according to claim 8, characterized in that: The air pressure sensor is a silicon pressure transmitter.

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