Focusing type shock wave dual-channel switching output circuit

Abstract

The invention discloses a focused shock wave dual-channel switching output circuit which is applied to an electric therapeutic apparatus and connected with a main control module of the electric therapeutic apparatus, the electric therapeutic apparatus comprises two therapeutic heads, and the focused shock wave dual-channel switching output circuit comprises a discharge module, a discharge trigger module and a trigger switching module. The discharge module comprises two discharge circuits which are connected in parallel and are in one-to-one correspondence with the treatment heads. The discharge trigger module comprises two trigger circuits and two protection circuits, and the trigger circuits and the protection circuits are in one-to-one correspondence with the discharge circuits and are connected with the discharge circuits; the trigger switching module is connected with a main control module of the electric therapeutic apparatus, the trigger switching module comprises a single-pole double-throw relay and a switch tube, the single-pole double-throw relay is connected with the discharge trigger module, the main control module and the switch tube, a control end of the switch tube is connected with the main control module of the electric therapeutic apparatus, and the switch tube is used for controlling switching work of the single-pole double-throw relay. And the normally closed end and the normally open end of the single-pole double-throw relay are respectively connected with the corresponding trigger circuits.

Description

Technical Field

[0001] The present invention relates to the technical field of therapeutic instruments, and in particular to a focused shock wave dual-channel switching output circuit. Background Art

[0002] The impact energy of electromagnetic focused shock waves mainly comes from the pulse current generated by the instantaneous discharge of high-voltage capacitors to the inductor coil, which forms a strong pulse magnetic field, causing the diaphragm covered on the coil to induce a magnetic field. The interaction between the diaphragm magnetic field and the coil magnetic field generates a repulsive force, forming a shock wave on the other side of the diaphragm in the water medium, and focusing is achieved through a focusing lens or self-focusing. The output channel of the existing focused shock wave needs to be switched manually, and it needs to be switched in the off state to prevent damage to the electrode, which has low working efficiency. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a focused shock wave dual-channel switching output circuit, which can automatically switch channel output according to the control of the main control module without shutting down the power and can also avoid damage to the treatment head caused by channel switching, thereby improving work efficiency.

[0004] In order to solve the above technical problems, the purpose of the present invention is achieved through the following technical solutions: providing a focused shock wave dual-channel switching output circuit, applied to an electrotherapy instrument, connected to a main control module of the electrotherapy instrument, the electrotherapy instrument comprising two treatment heads, the focused shock wave dual-channel switching output circuit comprising a discharge module, a discharge trigger module and a trigger switching module, the discharge module comprising two discharge circuits for discharge connected in parallel, the discharge circuits corresponding to and connected to the treatment heads one-to-one; the discharge trigger module comprising two trigger circuits and two protection circuits, the trigger circuits corresponding to and connected to the discharge circuits one-to-one, for controlling the corresponding discharge circuits to work, the protection circuits corresponding to and connected to the discharge circuits one-to-one, for consuming absorption The trigger switching module is connected to the main control module of the electrotherapy instrument, and is used to control the switching of the corresponding trigger circuit according to the switching control signal transmitted by the main control module, so as to transmit the input trigger signal received from the main control module to the corresponding trigger circuit. The trigger switching module includes a single-pole double-throw relay and a switch tube. The single-pole double-throw relay is connected to the discharge trigger module, the main control module and the switch tube. The control end of the switch tube is connected to the main control module of the electrotherapy instrument. The switch tube is used to control the switching of the single-pole double-throw relay. The normally closed end of the single-pole double-throw relay is connected to one of the trigger circuits, and the normally open end of the single-pole double-throw relay is connected to the other trigger circuit.

[0005] The beneficial technical effect of the present invention is that: the focused shock wave dual-channel switching output circuit of the present invention is provided with a discharge module including a discharge circuit corresponding to the two treatment heads of the electrotherapy apparatus one by one and a discharge trigger module including a trigger circuit and a protection circuit corresponding to the discharge circuit one by one, so as to control the operation of the corresponding discharge circuit through the trigger circuit, thereby controlling the operation of the corresponding treatment head, and consuming and absorbing the reverse pulse signal of the corresponding discharge circuit through the protection circuit, so as to realize the channel switching process without shutting down and avoid the channel switching causing damage to the treatment head; and, by providing a trigger switching module including a single-pole double-throw relay and a switch tube connected to the main control module of the electrotherapy apparatus, the single-pole double-throw relay is used to ensure that only a single channel is connected during the working process, and in conjunction with the switch tube, the switch tube can be controlled according to the switching control signal transmitted by the received main control module to control the single-pole double-throw relay to realize the rapid switching of the corresponding trigger circuit, so as to transmit the received input trigger signal transmitted by the main control module to the corresponding trigger circuit, so as to realize automatic and rapid switching of channel output according to the control of the main control module, and ensure single-channel output, thereby improving the overall channel switching output efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0007] Figure 1 A schematic diagram of a framework of a focused shock wave dual-channel switching output circuit provided by an embodiment of the present invention; Figure 2 A circuit diagram of a trigger switching module of a focused shock wave dual-channel switching output circuit provided by an embodiment of the present invention; Figure 3 A circuit diagram of a discharge module, a discharge trigger module and an isolated power supply module of a focused shock wave dual-channel switching output circuit provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0008] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0009] See also Figures 1 to 3 , Figure 1A schematic diagram of a framework of a focused shock wave dual-channel switching output circuit provided in an embodiment of the present invention, wherein the focused shock wave dual-channel switching output circuit 10 is applied to an electrotherapy apparatus and is connected to a main control module of the electrotherapy apparatus, wherein the electrotherapy apparatus includes two treatment heads, and the focused shock wave dual-channel switching output circuit 10 includes a discharge module 11, a discharge trigger module 12, and a trigger switching module 13, wherein the discharge module 11 includes two discharge circuits 111 connected in parallel for discharge, wherein the discharge circuits 111 correspond to and are connected to the treatment heads one by one to control the operation of the corresponding treatment heads; the discharge trigger module 12 includes two trigger circuits 121 and two protection circuits 132. 122, the trigger circuit 121 corresponds to and is connected to the discharge circuit 111 one by one, and is used to control the operation of the corresponding discharge circuit 111. The protection circuit 122 corresponds to and is connected to the discharge circuit 111 one by one, and is used to consume and absorb the reverse pulse signal of the corresponding discharge circuit 111; the trigger switching module 13 is connected to the main control module of the electrotherapy instrument, and is used to control the switching of the corresponding trigger circuit 121 according to the switching control signal transmitted by the main control module, so as to transmit the input trigger signal transmitted by the main control module to the corresponding trigger circuit 121. The trigger switching module 13 includes a single-pole double-throw relay RLY1 and a switch tube Q2. The single-pole double-throw relay RLY1 is connected to the discharge trigger module 12, the main control module and the switch tube Q2, the control end of the switch tube Q2 is connected to the main control module of the electrotherapy instrument, and the switch tube Q2 is used to control the switching work of the single-pole double-throw relay RLY1. The normally closed end of the single-pole double-throw relay RLY1 is connected to one of the trigger circuits 121, so that in the initial state, the single-pole double-throw relay RLY1 does not trigger switching, the normally closed end of the single-pole double-throw relay RLY1 is connected to the main control module, and the normally open end is not connected to the main control module. The trigger circuit 121 connected to the normally closed end of the single-pole double-throw relay RLY1 transmits the received main control module transmission A trigger signal is input to control the operation of the corresponding discharge circuit 111, thereby controlling the operation of the corresponding treatment head. The normally open end of the single-pole double-throw relay RLY1 is connected to another trigger circuit 121, so that when a switching control signal transmitted by the main control module is received, the switch tube Q2 drives the single-pole double-throw relay RLY1 to work and trigger switching. The normally open end of the single-pole double-throw relay RLY1 is connected to the main control module and the normally closed end is disconnected from the main control module. The trigger circuit 121 connected to the normally open end of the single-pole double-throw relay RLY1 transmits the received input trigger signal transmitted by the main control module to control the operation of the corresponding discharge circuit 111, thereby controlling the operation of the corresponding treatment head.

[0010] Among them, the two treatment heads of the electrotherapy device can be respectively the first treatment head and the second treatment head, the discharge circuit 111 corresponding to and connected to the first treatment head can be recorded as the first discharge circuit, the discharge circuit 111 corresponding to and connected to the second treatment head can be recorded as the second discharge circuit, the trigger circuit 121 and the protection circuit 122 corresponding to and connected to the first discharge circuit are respectively recorded as the first trigger circuit and the first protection circuit, the trigger circuit 121 and the protection circuit 122 corresponding to and connected to the second discharge circuit are respectively recorded as the second trigger circuit and the second protection circuit, the normally closed end of the single-pole double-throw relay RLY1 can be connected to the first trigger circuit, and the normally open end of the single-pole double-throw relay RLY1 is connected to the second trigger circuit. The focused shock wave dual-channel switching output circuit 10 is provided with a discharge module 11 including a discharge circuit 111 corresponding to the two treatment heads of the electrotherapy apparatus and a discharge trigger module 12 including a trigger circuit 121 and a protection circuit 122 corresponding to the discharge circuit 111, so as to control the operation of the corresponding discharge circuit 111 through the trigger circuit 121, thereby controlling the operation of the corresponding treatment head, and consuming and absorbing the reverse pulse signal of the corresponding discharge circuit 111 through the protection circuit 122, so as to realize the channel switching process without shutting down and avoiding the damage to the treatment head caused by the channel switching; and, by providing a single-pole double-throw relay connected to the main control module of the electrotherapy apparatus, The trigger switching module 13 of the electrical appliance RLY1 and the switch tube Q2 uses the single-pole double-throw relay RLY1 to ensure that only a single channel is connected during the working process, and cooperates with the switch tube Q2 to control the switch tube Q2 according to the switching control signal transmitted by the main control module to control the single-pole double-throw relay RLY1 to achieve fast switching of the corresponding trigger circuit 121, so as to transmit the input trigger signal transmitted by the main control module to the corresponding trigger circuit 121, realize automatic and fast switching of channel output according to the control of the main control module, and ensure single-channel output, improve the overall channel switching output efficiency, and realize immediate output after channel switching, which is highly practical and can realize alternating switching. At the same time, it occupies a small space.

[0011] Preferably, the trigger switching module 13 includes a switching indication circuit for displaying the occurrence of channel switching, and the switching indication circuit is connected to the switch tube Q2 to display the channel switching according to the state of the switch tube Q2. The switching indication circuit includes a switching indication light emitting diode LED1 and a switching indication connection resistor R1, wherein the anode of the switching indication light emitting diode LED1 is connected to the power supply voltage through the switching indication connection resistor R1, and the cathode of the switching indication light emitting diode LED1 is connected to the switch tube Q2. The power supply voltage can adopt a voltage with a voltage value of 12V. The trigger switching module 13 may also include a third voltage stabilizing diode D3 connected in parallel with the switching indication circuit, wherein the cathode of the third voltage stabilizing diode D3 is connected to the power supply voltage, and the anode of the third voltage stabilizing diode D3 is connected to the switch tube Q2.

[0012] Specifically, the switch tube Q2 is a MOS tube, the gate of the switch tube Q2 is connected to the main control module of the electrotherapy instrument through the second resistor R2, the source of the switch tube Q2 is connected to the ground and the main control module of the electrotherapy instrument, the drain of the switch tube Q2 is connected to the single-pole double-throw relay RLY1, and the single-pole double-throw relay RLY1 is connected to the power supply voltage. The power supply voltage can be a voltage with a voltage value of 12V. The single-pole double-throw relay RLY1 can adopt a relay with model G5V-1-DC24V. The switch tube Q2 can be connected to the main control module of the electrotherapy instrument through the three-port terminal P1. The gate of the switch tube Q2 is connected to the main control module of the electrotherapy instrument through the second interface of the three-port terminal P1 after passing through the second resistor R2, so as to drive the switch tube Q2 to work according to the switching control signal transmitted by the main control module. The source of the switch tube Q2 is connected to the first interface of the three-port terminal P1 and the ground, and the third interface of the three-port terminal P1 is connected to the power supply voltage. The power supply voltage and the third interface of the three-port terminal P1 are connected to the positive electrode of the third electrolytic capacitor CE3, and the negative electrode of the third electrolytic capacitor CE3 is grounded.

[0013] Specifically, the discharge module 11 also includes a high-voltage capacitor C2, a fourth diode D4 and a third resistor R3. The high-voltage capacitor C2 is connected to a high-voltage capacitor charging module 113, so that the high-voltage capacitor C2 is charged by the high-voltage capacitor charging module 113. The high-voltage capacitor charging module 113 is connected to the main control module of the electrotherapy instrument, so that the high-voltage capacitor C2 is charged according to the operation of the high-voltage capacitor charging module 113 controlled by the main control module, and the operation of the overall discharge module 11 is controlled; one end of the high-voltage capacitor C2 is connected to the cathode of the fourth diode D4 and the input end of the discharge circuit 111, the output end of the discharge circuit 111 is connected to the corresponding inductor coil of the treatment head, the anode of the fourth diode D4 is connected to one end of the third resistor R3, the other end of the third resistor R3 is connected to the other end of the high-voltage capacitor C2 and the ground, and the output end of the discharge circuit 111 is connected to the other end of the third resistor R3, the other end of the high-voltage capacitor C2 and the ground after passing through the corresponding inductor coil of the treatment head. Among them, the high-voltage capacitor charging module 113 charges the high-voltage capacitor C2 to power the discharge circuit 111, and the charging voltage output by the high-voltage capacitor charging module 113 ranges from 1000V to 3800V. The high-voltage capacitor charging module 113 is connected to the mains, and the high-voltage capacitor charging module includes a rectifier circuit and a half-bridge LLC resonant circuit electrically connected to the rectifier circuit. The mains is rectified by the rectifier circuit and boosted by the half-bridge LLC resonant circuit. The boosted voltage is output to charge the high-voltage capacitor C2. The rectifier circuit can rectify the mains from 220V to 310V. The high-voltage capacitor C2 is discharged to the corresponding inductor coil of the treatment head through the discharge circuit 111, and the fourth diode D4 and the third resistor R3 are set to consume current. The fourth diode D4 can be a high-voltage fast recovery diode.

[0014] Specifically, in this embodiment, the discharge circuit 111 includes a thyristor, the anode of the thyristor is connected to one end of the high-voltage capacitor C2 and the cathode of the fourth diode D4, the cathode of the thyristor is connected to the inductor coil of the corresponding treatment head, and the control electrode of the thyristor is connected to the corresponding trigger circuit 121. Among them, the thyristor of the first discharge circuit is recorded as the first thyristor Q1, and the thyristor of the second discharge circuit is recorded as the fourth thyristor Q4. The inductor coil of the first treatment head is recorded as L2, and the inductor coil of the second treatment head is recorded as L1. The discharge module 11 can realize dual-channel discharge output energy by setting a thyristor connected to the inductor coil of the corresponding treatment head and the fourth diode D4 and the third resistor R3 for consuming current in cooperation with the high-voltage capacitor C2 charged by the high-voltage capacitor charging module 113, and the structure is simple.

[0015] Specifically, the focused shock wave dual-channel switching output circuit 10 also includes an isolated power supply module 14, and the trigger switching module 13 also includes a dual-channel optocoupler U3. The normally closed end and the normally open end of the single-pole double-throw relay RLY1 are respectively connected to the corresponding trigger circuit 121 through the corresponding channel optocoupler in the dual-channel optocoupler U3. The dual-channel optocoupler U3 may include a first channel optocoupler and a second channel optocoupler. Then, the normally closed end of the single-pole double-throw relay RLY1 is connected to the light source of the first channel optocoupler of the dual-channel optocoupler U3, and the normally open end of the single-pole double-throw relay RLY1 is connected to the light source of the second channel optocoupler of the dual-channel optocoupler U3. The input end of the isolated power supply module 14 is connected to the supply voltage, and the output end of the isolated power supply module 14 is connected to the light receiver of each channel optocoupler in the dual-channel optocoupler U3, so as to realize the triggering of the thyristor of the discharge circuit 111 through the isolated power supply module 14. Among them, the power supply voltage can adopt a voltage with a voltage value of 12V, and the isolated power supply module 14 includes an isolated power supply chip U1 with a model number of URB2412YMD-6WR3. The voltage input pin Vin of the isolated power supply chip U1 is connected to the power supply voltage through a fuse F1, and the positive voltage output pin +Vo of the isolated power supply chip U1 serves as the output end of the isolated power supply module 14. The positive voltage output pin +Vo of the isolated power supply chip U1 is connected to the positive electrode of the first electrolytic capacitor CE1, and the negative electrode of the first electrolytic capacitor CE1 is grounded. The maximum output of the isolated power supply chip U1 is 500mA, and energy is stored through the first electrolytic capacitor CE1. The capacitance of the first electrolytic capacitor CE1 can be 470µF to ensure that the thyristor trigger peak current stably reaches more than 800mA under high-frequency triggering, thereby ensuring that the thyristor can be quickly and fully turned on.

[0016] Specifically, in this embodiment, the trigger circuit 121 includes a trigger MOS tube, a first voltage-dividing resistor, a second voltage-dividing resistor and a trigger voltage-stabilizing diode. The output end of the isolation power supply module 14 is connected to one end of the first voltage-dividing resistor, the other end of the first voltage-dividing resistor is connected to one end of the second voltage-dividing resistor and the anode of the trigger voltage-stabilizing diode, and the cathode of the trigger voltage-stabilizing diode is connected to the control electrode of the thyristor of the corresponding discharge circuit 111. The discharge trigger module 12 also includes a gate drive chip U2. The normally open end and the normally closed end of the single-pole double-throw relay RLY1 are respectively connected through the double The corresponding channel optocoupler in the channel optocoupler U3 is connected to the corresponding input pin of the gate driver chip U2 through the corresponding trigger connection resistor, the two output pins of the gate driver chip U2 are connected to the gate of the trigger MOS tube of the corresponding trigger circuit 121, the power supply voltage pin VDD of the gate driver chip U2 is connected to the output end of the isolation power module 14, the drain of the trigger MOS tube is connected to the other end of the second voltage-dividing resistor, the cathode of the corresponding thyristor of the discharge circuit 111 and the protection circuit 122 connected to the corresponding discharge circuit 111, and the source of the trigger MOS tube is grounded. Among them, by setting the gate driver chip U2 to drive the trigger MOS tube of the corresponding trigger circuit 121, in conjunction with the isolation power module 14, the trigger current rising edge can be short and the peak current can be large, so that the conduction time of the thyristor is shorter and the conduction loss is lower, and the gate driver chip U2 can drive the trigger MOS tube to turn on quickly to provide a conduction current to the control electrode of the thyristor to control the conduction of the thyristor. The model of the gate driver chip U2 is UCC27324. The gate drive chip U2 includes a first input pin INA, a second input pin INB, a first output pin OUTA and a second output pin OUTB. The first input pin INA of the gate drive chip U2 corresponds to the first output pin OUTA, and the second input pin INB of the gate drive chip U2 corresponds to the second output pin OUTB. The trigger MOS tube, the first voltage-dividing resistor, the second voltage-dividing resistor and the trigger zener diode of the first trigger circuit are respectively recorded as Q3, R5, R7 and D5, and the trigger MOS tube, the first voltage-dividing resistor, the second voltage-dividing resistor and the trigger zener diode of the second trigger circuit are respectively recorded as Q5, R10, R13 and D8. The normally closed end of the single-pole double-throw relay RLY1 is connected to the second input pin INB of the gate drive chip U2 through the first channel optocoupler of the dual-channel optocoupler U3 and the corresponding trigger connection resistor R12. The second output pin OUTB of the gate drive chip U2 is connected to the gate of the trigger MOS tube Q3 of the first trigger circuit. The normally open end of the single-pole double-throw relay RLY1 is connected to the first input pin INA of the gate drive chip U2 through the second channel optocoupler of the dual-channel optocoupler U3 and the corresponding trigger connection resistor R16. The first output pin INB of the gate drive chip U2 is connected to the gate of the trigger MOS tube Q5 of the second trigger circuit.

[0017] Preferably, a trigger resistor is connected between the output pin of the gate driver chip U2 and the gate of the trigger MOS tube of the corresponding trigger circuit 121. The trigger resistor connected between the first output pin INA of the gate driver chip U2 and the gate of the trigger MOS tube Q5 of the second trigger circuit is denoted as R20, and the trigger resistor connected between the second output pin INB of the gate driver chip U2 and the gate of the trigger MOS tube Q3 of the first trigger circuit is denoted as R9.

[0018] Specifically, the discharge trigger module 12 also includes two trigger indication circuits, the trigger indication circuits correspond to the trigger circuits 121 one by one, and the output pins of the gate drive chip U2 are connected to the corresponding trigger indication circuits and the corresponding trigger circuits 121, so as to display the trigger circuit 121 that triggers the operation according to the output of the gate drive chip U2, so as to know that the treatment head corresponding to the discharge circuit 111 corresponding to the trigger circuit 121 is working. The trigger indication circuit includes a trigger indication resistor and a trigger indication light emitting diode, one end of the trigger indication resistor is connected to the anode of the trigger indication light emitting diode, the cathode of the trigger indication light emitting diode is grounded, and the other end of the trigger indication resistor is connected to the corresponding output pin of the gate drive chip U2. Among them, the trigger indication circuit corresponding to the first trigger circuit is recorded as the first trigger indication circuit, and the trigger indication circuit corresponding to the second trigger circuit is recorded as the second trigger indication circuit. The second output pin OUTB of the gate drive chip U2 is connected to the first trigger indication circuit, and the first output pin OUTA of the gate drive chip U2 is connected to the second trigger indication circuit. The trigger indication resistor and the trigger indication light-emitting diode of the first trigger indication circuit are recorded as R8 and LED2, and the trigger indication resistor and the trigger indication light-emitting diode of the second trigger indication circuit are recorded as R19 and LED3.

[0019] Specifically, in this embodiment, the protection circuit 122 includes an absorption capacitor and an absorption diode, the absorption capacitor and the absorption diode are connected in series, one end of the absorption capacitor is connected to the output end of the isolation power module 14, the other end of the absorption capacitor is connected to the cathode of the absorption diode, and the anode of the absorption diode is connected to the drain of the trigger MOS tube of the corresponding trigger circuit 121 and the cathode of the thyristor of the corresponding discharge circuit 111. Among them, the absorption diode is a voltage-stabilizing diode, the absorption capacitor and the absorption diode of the first protection circuit are respectively recorded as C4 and D6, and the absorption capacitor and the absorption diode of the second protection circuit are respectively recorded as C9 and D9.

[0020] Specifically, in this embodiment, the trigger switching module 13 also includes two single-time delay trigger circuits, which correspond to and are connected to the channel optocouplers of the dual-channel optocoupler U3, and are connected to the corresponding trigger circuit 121 through the gate drive chip U2. The single-time delay trigger circuit is set to charge with the corresponding channel optocoupler to increase the voltage on the corresponding trigger connection resistor to the turn-on voltage of the trigger MOS tube of the corresponding trigger circuit 121, and the gate drive chip U2 drives the trigger MOS tube of the trigger circuit 121 to turn on, so that the thyristor of the corresponding discharge circuit 111 is turned on, so that the high-voltage capacitor C2 discharges to the corresponding inductor coil of the treatment head through the corresponding thyristor. The single-time delay trigger circuit connected to the first channel optocoupler of the dual-channel optocoupler U3 is the first single-time delay trigger circuit, and the single-time delay trigger circuit connected to the second channel optocoupler of the dual-channel optocoupler U3 is the second single-time delay trigger circuit. The first single-shot delay trigger circuit is connected to the first trigger circuit through the gate driving chip U2, and the second single-shot delay trigger circuit is connected to the second trigger circuit through the gate driving chip U2.

[0021] Specifically, in this embodiment, the single-shot delay trigger circuit includes a first delay resistor, a second delay resistor and a delay capacitor, the normally open end and the normally closed end of the single-pole double-throw relay RLY1 are respectively connected to one end of the first delay resistor and one end of the delay capacitor through the corresponding channel optocoupler in the dual-channel optocoupler U3, the other end of the first delay resistor is grounded, the other end of the delay capacitor is connected to one end of the second delay resistor and the corresponding trigger connection resistor, and the other end of the second delay resistor is grounded. Among them, the channel optocoupler of the dual-channel optocoupler U3 charges the corresponding delay capacitor to increase the voltage on the corresponding trigger connection resistor to the turn-on voltage of the trigger MOS tube of the corresponding trigger circuit 121. The first delay resistor, the second delay resistor and the delay capacitor of the first single-shot delay trigger circuit are respectively recorded as R14, R15 and C8, and the first delay resistor, the second delay resistor and the delay capacitor of the second single-shot delay trigger circuit are respectively recorded as R17, R18 and C10.

[0022] Specifically, in this embodiment, the trigger switching module 13 also includes a transient voltage suppression diode D7 and a two-port socket J1, the two-port socket J1 is connected to the main control module of the electrotherapy instrument to receive the input trigger signal transmitted by the main control module, the light source of each channel optocoupler of the dual-channel optocoupler U3 is a light emitting diode, the normally open end and the normally closed end of the single-pole double-throw relay RLY1 are respectively connected to the anode of the light emitting diode of the corresponding channel optocoupler of the dual-channel optocoupler U3, and the cathode of the light emitting diode of each channel optocoupler of the dual-channel optocoupler U3 is connected to the cathode of the light emitting diode of each channel optocoupler through the transient voltage suppression diode D 7 is connected to the first interface of the two-port socket J1, so that the cathode of the light-emitting diode of each channel optocoupler of the dual-channel optocoupler U3 is connected to the main control module of the electrotherapy instrument through the transient voltage suppression diode and the first interface of the two-port socket, and the cathode of the light-emitting diode of each channel optocoupler of the dual-channel optocoupler U3 is connected to the second interface of the two-port socket J1, so that the cathode of the light-emitting diode of each channel optocoupler of the dual-channel optocoupler U3 is connected to the main control module of the electrotherapy instrument through the second interface of the two-port socket J1 to receive and transmit the input trigger signal transmitted by the main control module of the electrotherapy instrument.

[0023] In summary, the focused shock wave dual-channel switching output circuit of the present invention is provided with a discharge module including a discharge circuit corresponding to the two treatment heads of the electrotherapy apparatus and a discharge trigger module including a trigger circuit and a protection circuit corresponding to the discharge circuit, so as to control the operation of the corresponding discharge circuit through the trigger circuit, thereby controlling the operation of the corresponding treatment head, and consuming and absorbing the reverse pulse signal of the corresponding discharge circuit through the protection circuit, so as to realize the channel switching process without shutting down and avoid the channel switching causing damage to the treatment head; and, by providing a trigger switching module including a single-pole double-throw relay and a switch tube connected to the main control module of the electrotherapy apparatus, the single-pole double-throw relay is used to ensure that only a single channel is connected during the working process, and in conjunction with the switch tube, the switch tube can be controlled according to the switching control signal transmitted by the received main control module to control the single-pole double-throw relay to realize the rapid switching of the corresponding trigger circuit, so as to transmit the received input trigger signal transmitted by the main control module to the corresponding trigger circuit, so as to realize automatic and rapid switching of channel output according to the control of the main control module, and ensure single-channel output, thereby improving the overall channel switching output efficiency.

[0024] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A focused shock wave dual-channel switching output circuit, characterized in that: Applied to an electrotherapy apparatus, connected to a main control module of the electrotherapy apparatus, the electrotherapy apparatus includes two treatment heads, and the focused shock wave dual-channel switching output circuit includes: A discharge module, comprising two discharge circuits connected in parallel for discharge, wherein the discharge circuits correspond to and are connected to the treatment heads one by one; A discharge trigger module, comprising two trigger circuits and two protection circuits, wherein the trigger circuits correspond to and are connected to the discharge circuits one by one, and are used to control the operation of the corresponding discharge circuits; and the protection circuits correspond to and are connected to the discharge circuits one by one, and are used to consume and absorb the reverse pulse signals of the corresponding discharge circuits; A trigger switching module is connected to the main control module of the electrotherapy device, and is used to control the switching of the corresponding trigger circuit according to the switching control signal transmitted by the main control module, so as to transmit the input trigger signal received from the main control module to the corresponding trigger circuit. The trigger switching module includes a single-pole double-throw relay and a switch tube. The single-pole double-throw relay is connected to the discharge trigger module, the main control module and the switch tube. The control end of the switch tube is connected to the main control module of the electrotherapy device. The switch tube is used to control the switching operation of the single-pole double-throw relay. The normally closed end of the single-pole double-throw relay is connected to one of the trigger circuits, and the normally open end of the single-pole double-throw relay is connected to the other trigger circuit.

2. The focused shock wave dual-channel switching output circuit according to claim 1, characterized in that: The discharge module also includes a high-voltage capacitor, a fourth diode and a third resistor. The high-voltage capacitor is connected to the high-voltage capacitor charging module, one end of the high-voltage capacitor is connected to the cathode of the fourth diode and the input end of the discharge circuit, the output end of the discharge circuit is connected to the inductor coil of the corresponding treatment head, the anode of the fourth diode is connected to one end of the third resistor, the other end of the third resistor is connected to the other end of the high-voltage capacitor and the ground, and the output end of the discharge circuit is connected to the other end of the third resistor, the other end of the high-voltage capacitor and the ground after passing through the inductor coil of the corresponding treatment head.

3. The focused shock wave dual-channel switching output circuit according to claim 2, characterized in that: The discharge circuit includes a thyristor, the anode of the thyristor is connected to one end of the high-voltage capacitor and the cathode of the fourth diode, the cathode of the thyristor is connected to the inductor coil of the corresponding treatment head, and the control electrode of the thyristor is connected to the corresponding trigger circuit.

4. The focused shock wave dual-channel switching output circuit according to claim 3, characterized in that: The focused shock wave dual-channel switching output circuit also includes an isolated power supply module, and the trigger switching module also includes a dual-channel optocoupler. The normally closed end and the normally open end of the single-pole double-throw relay are respectively connected to the corresponding trigger circuit through the corresponding channel optocouplers in the dual-channel optocoupler, the input end of the isolated power supply module is connected to the supply voltage, and the output end of the isolated power supply module is connected to the light receiver of each channel optocoupler in the dual-channel optocoupler.

5. The focused shock wave dual-channel switching output circuit according to claim 4, characterized in that: The trigger circuit includes a trigger MOS tube, a first voltage-dividing resistor, a second voltage-dividing resistor and a trigger zener diode. The output end of the isolation power supply module is connected to one end of the first voltage-dividing resistor, the other end of the first voltage-dividing resistor is connected to one end of the second voltage-dividing resistor and the anode of the trigger zener diode, the cathode of the trigger zener diode is connected to the control electrode of the corresponding thyristor of the discharge circuit, the discharge trigger module also includes a gate drive chip, the normally open end and the normally closed end of the single-pole double-throw relay are respectively connected to the corresponding input pin of the gate drive chip through the corresponding channel optocoupler in the dual-channel optocoupler and the corresponding trigger connection resistor, the two output pins of the gate drive chip are connected to the gate of the trigger MOS tube of the corresponding trigger circuit, the power supply voltage pin of the gate drive chip is connected to the output end of the isolation power supply module, the drain of the trigger MOS tube is connected to the other end of the second voltage-dividing resistor, the cathode of the corresponding thyristor of the discharge circuit and the protection circuit connected to the corresponding discharge circuit, and the source of the trigger MOS tube is grounded.

6. The focused shock wave dual-channel switching output circuit according to claim 5, characterized in that: The protection circuit includes an absorption capacitor and an absorption diode, the absorption capacitor is connected in series with the absorption diode, one end of the absorption capacitor is connected to the output end of the isolation power supply module, the other end of the absorption capacitor is connected to the cathode of the absorption diode, and the anode of the absorption diode is connected to the drain of the trigger MOS tube of the corresponding trigger circuit and the cathode of the thyristor of the corresponding discharge circuit.

7. The focused shock wave dual-channel switching output circuit according to claim 5, characterized in that: The trigger switching module also includes two single-shot delay trigger circuits, which correspond one-to-one to and are connected to the channel optocouplers of the dual-channel optocoupler, and the two single-shot delay trigger circuits are connected to the corresponding trigger circuits through the gate drive chip.

8. The focused shock wave dual-channel switching output circuit according to claim 7, characterized in that: The single-shot delay trigger circuit includes a first delay resistor, a second delay resistor and a delay capacitor. The normally open end and the normally closed end of the single-pole double-throw relay are respectively connected to one end of the first delay resistor and one end of the delay capacitor through the corresponding channel optocouplers in the dual-channel optocoupler. The other end of the first delay resistor is grounded, and the other end of the delay capacitor is connected to one end of the second delay resistor and the corresponding trigger connection resistor. The other end of the second delay resistor is grounded.

9. The focused shock wave dual-channel switching output circuit according to claim 4, characterized in that: The trigger switching module also includes a transient voltage suppression diode and a two-port socket, the two-port socket is connected to the main control module of the electrotherapy device, the light source of each channel optocoupler of the dual-channel optocoupler is a light emitting diode, the normally open end and the normally closed end of the single-pole double-throw relay are respectively connected to the anode of the light emitting diode of the corresponding channel optocoupler of the dual-channel optocoupler, the cathode of the light emitting diode of each channel optocoupler of the dual-channel optocoupler is connected to the first interface of the two-port socket through the transient voltage suppression diode, and the cathode of the light emitting diode of each channel optocoupler of the dual-channel optocoupler is connected to the second interface of the two-port socket to receive and transmit the input trigger signal transmitted by the main control module of the electrotherapy device.

10. The focused shock wave dual-channel switching output circuit according to claim 1, characterized in that: The switch tube is a MOS tube, the gate of the switch tube is connected to the main control module of the electrotherapy device through a second resistor, the source of the switch tube is connected to the ground and the main control module of the electrotherapy device, the drain of the switch tube is connected to the single-pole double-throw relay, and the single-pole double-throw relay is connected to the power supply voltage.

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