Shock wave power supply and shock wave release detection method

Abstract

The invention provides a shock wave power supply and a shock wave release detection method. The shock wave power supply comprises a booster circuit, at least one detection circuit and at least one discharge circuit, the booster circuit and all the discharge circuits are connected to the same single circuit, the at least one detection circuit is connected with the at least one discharge circuit in a one-to-one correspondence manner, one end of the detection circuit is electrically connected with one end of the corresponding discharge circuit, and the other end of the detection circuit is electrically connected with the other end of the corresponding discharge circuit. By detecting the voltage drop of the discharge circuit, the short circuit of the discharge circuit and the open circuit of the discharge circuit can be detected, so that two circuit fault states are covered, and the purpose of completely detecting the circuit fault states is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of shock wave power supplies, and in particular to a shock wave power supply and a shock wave release detection method. Background Art

[0002] In the electrohydraulic shock wave technology used in the medical field, it is usually determined whether the shock wave electrode releases a shock wave with a therapeutic effect to determine whether the shock wave catheter has applied treatment to the treatment site. The commonly used method is to use a current sensor to detect the current in the circuit where the shock wave electrode is located, and to determine whether the detection current is greater than a threshold current to confirm that the shock wave electrode discharges and breaks down to generate an arc and releases a shock wave with a therapeutic effect. For example, Figure 1 As shown, a current transformer is connected in series in the circuit where the shock wave electrode is located, or, as shown in Figure 2 As shown, a non-contact current transformer is used. The currently used method can effectively detect the fault that the shock wave electrode cannot discharge and break down when the circuit where the shock wave electrode is located is broken. Summary of the invention

[0003] In view of this, the present invention provides a shock wave power supply and a shock wave release detection method, so that no matter whether the circuit where the shock wave electrode is located is broken or short-circuited, resulting in the shock wave electrode being unable to release shock waves with therapeutic effects, it can be detected, thereby accurately judging whether the shock wave electrode releases shock waves with therapeutic effects.

[0004] The present invention provides the following technical solution: a shock wave power supply, comprising a boost circuit, at least one detection circuit and at least one discharge circuit; the boost circuit and all the discharge circuits are connected to the same single circuit, at least one detection circuit is connected to at least one discharge circuit in a one-to-one correspondence, and one end of the detection circuit is electrically connected to one end of the corresponding discharge circuit, and the other end of the detection circuit is electrically connected to the other end of the corresponding discharge circuit.

[0005] Furthermore, the detection circuit includes: a current adjusting resistor, one end of which is electrically connected to one end of the corresponding discharge circuit; an optocoupler, one end of the input side of which is electrically connected to the other end of the current adjusting resistor, and the other end of the optocoupler input side is electrically connected to the other end of the discharge circuit, and the optocoupler can detect the voltage drop of the discharge circuit.

[0006] Furthermore, the boost circuit includes a high-voltage power supply, a first capacitor and a first rectifier diode, one end of the high-voltage power supply is electrically connected to one end of the first capacitor, the other end of the high-voltage power supply is electrically connected to the other end of the first capacitor, and the first rectifier diode is electrically connected between one end of the high-voltage power supply and one end of the first capacitor.

[0007] Furthermore, the boost circuit also includes a control module for controlling the high voltage power supply to be turned on and off.

[0008] Further, the discharge circuit includes at least one shock wave electrode, and the corresponding detection circuit is connected to the same single circuit with all shock wave electrodes.

[0009] Furthermore, the discharge circuit includes at least one second capacitor, which is electrically connected to at least one shock wave electrode in a one-to-one correspondence, one end of the second capacitor is electrically connected to one end of the corresponding shock wave electrode, and the other end of the second capacitor is electrically connected to the other end of the corresponding shock wave electrode.

[0010] Furthermore, the shock wave power supply also includes a current limiting resistor and a switch type component, one end of the current limiting resistor is electrically connected to the other end of the discharge circuit, one end of the switch type component is electrically connected to the other end of the current limiting resistor, and the other end of the switch type component is connected to the ground wire.

[0011] Furthermore, the shock wave power supply also includes a control chip electrically connected to the switch type components and the detection circuit.

[0012] The present invention also provides a shock wave release detection method, which is performed using the shock wave power supply mentioned above.

[0013] Further, the shock wave release detection method includes: when the switch-type component is turned off, the light-emitting diode in the optocoupler does not emit light, the first field effect tube in the optocoupler is turned on and the second field effect tube is turned off, and the output voltage Vout of the optocoupler is high; when the switch-type component is turned on, the light-emitting diode in the optocoupler emits light, the first field effect tube in the optocoupler is turned off and the second field effect tube is turned on, and the output voltage Vout of the voltage detection circuit is low; when the shock wave electrode is discharged, the voltage across the shock wave electrode is instantly reduced to 0V, the light-emitting diode in the optocoupler does not emit light, the first field effect tube in the optocoupler is turned on and the second field effect tube is turned off, and the output voltage Vout of the optocoupler is high, thereby forming a voltage rising edge; when the shock wave electrode is short-circuited, the light-emitting diode in the optocoupler does not emit light, the first field effect tube in the optocoupler is turned on and the second field effect tube is turned off, and the output voltage Vout of the optocoupler is high; when the discharge circuit is open, the light-emitting diode in the optocoupler emits light, the first field effect tube in the optocoupler is turned off and the second field effect tube is turned on, and the output voltage Vout of the optocoupler is low.

[0014] Compared with the prior art, the beneficial effects achieved by at least one of the above-mentioned technical solutions adopted in the present invention include at least the following: the present invention detects whether the voltage of the discharge circuit (i.e., the circuit where the shock wave electrode is located) drops through the detection circuit, and can accurately determine whether the shock wave electrode in the discharge circuit releases a shock wave with a therapeutic effect, thereby achieving the purpose of accurately knowing whether the shock wave electrode releases a shock wave with a therapeutic effect. This is based on the fact that no matter whether the discharge circuit is open or short-circuited, the discharge circuit where the shock wave electrode is located will not experience a voltage drop; in addition, when a fault occurs in the discharge circuit and causes the shock wave electrode to be unable to release a shock wave with a therapeutic effect, the present invention can further determine whether the circuit where the shock wave electrode is located is open or short-circuited by detecting whether the output voltage in the circuit is high or low, thereby achieving the detection of both the open circuit and the short circuit of the discharge circuit, so as to cover the two fault states of the discharge circuit and achieve the purpose of completely detecting the state of the discharge circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of a first prior art solution;

[0017] Figure 2 is a schematic diagram of a second prior art solution;

[0018] Figure 3 is a schematic diagram of one embodiment of the present invention;

[0019] Figure 4 It is a schematic diagram of another embodiment of the present invention. DETAILED DESCRIPTION

[0020] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] The basic principle of the generation of liquid-electric shock waves is to load a high voltage (potential difference) to the shock wave electrode in a liquid medium (conductive liquid) with a certain conductivity, and generate an instantaneous discharge of a large current within a few microseconds. During the discharge process, a high-energy-density, high-temperature, high-pressure plasma zone is formed on the discharge channel, causing the discharge channel to expand rapidly, forming a pressure pulse in the liquid medium, which is a shock wave. In addition to generating shock waves, part of the electrical energy is also converted into heat and light during the discharge process.

[0023] In actual working process, the fault state of the shock wave electrode that cannot discharge and break down caused by the circuit where the shock wave electrode is located includes two types: open circuit and short circuit. When the circuit where the shock wave electrode is located is short-circuited, a large current will still be formed in the circuit where the shock wave electrode is located, which is similar to the current size in the circuit where the shock wave electrode is located when the shock wave electrode is discharged and broken down. Therefore, the prior art can detect the situation that the shock wave electrode cannot release a shock wave with a therapeutic effect when the circuit where the shock wave electrode is located is open-circuited by whether the current in the circuit where the shock wave electrode is located is greater than the threshold current, and the situation that the shock wave electrode cannot release a shock wave with a therapeutic effect when the circuit where the shock wave electrode is located is short-circuited cannot be detected, so it is impossible to accurately know whether the shock wave electrode releases a shock wave with a therapeutic effect.

[0024] In the present application, the inventor proposes that whether the shock wave electrode releases a shock wave with a therapeutic effect can be determined based on whether the voltage of the circuit where the shock wave electrode is located (ie, the discharge circuit) has a drop rising edge.

[0025] When the shock wave electrode releases the shock wave, the voltage at both ends of the shock wave electrode will drop instantly due to the rapid release of energy. If the circuit where the shock wave electrode is located is broken, the shock wave electrode will not be able to discharge, break down and release the shock wave, and the voltage at both ends of the shock wave electrode will not drop instantly. If the circuit where the shock wave electrode is located is short-circuited, the circuit where the shock wave electrode is located cannot add the high-voltage electrical signal to the two terminals of the shock wave electrode, and the shock wave electrode cannot discharge, break down and release the shock wave, and the voltage at both ends of the shock wave electrode will not drop instantly. Based on this, the embodiment of the present invention proposes to determine whether the shock wave electrode releases a shock wave with a therapeutic effect by detecting whether the voltage at both ends of the shock wave electrode has a rising edge, and whether the circuit where the shock wave electrode is located is broken or short-circuited, it can be detected.

[0026] like Figure 3 and Figure 4As shown, an embodiment of the present invention provides a shock wave power supply, including a boost circuit, at least one detection circuit and at least one discharge circuit; the boost circuit and all the discharge circuits are connected to the same single circuit, at least one detection circuit is connected to at least one discharge circuit in a one-to-one correspondence, and one end of the detection circuit is electrically connected to one end of the corresponding discharge circuit, and the other end of the detection circuit is electrically connected to the other end of the corresponding discharge circuit.

[0027] The present invention uses a detection circuit to detect whether the voltage of the discharge circuit drops, so as to judge whether the shock wave electrode in the discharge circuit releases a shock wave with a therapeutic effect, thereby realizing the detection of a situation where the shock wave electrode in the discharge circuit cannot release a shock wave with a therapeutic effect due to a disconnection of the discharge circuit, and the detection of a situation where the shock wave electrode in the discharge circuit cannot release a shock wave with a therapeutic effect due to a short circuit of the discharge circuit, thereby achieving the purpose of accurately judging whether the shock wave electrode releases a shock wave with a therapeutic effect.

[0028] Specifically, the detection circuit includes:

[0029] A current regulating resistor R1, one end of which is electrically connected to one end of a corresponding discharge circuit;

[0030] The optocoupler has one end on the input side electrically connected to the other end of the current regulating resistor R1 , and the other end on the input side of the optocoupler is electrically connected to the other end of the discharge circuit. The optocoupler can detect a voltage drop in the discharge circuit.

[0031] The present invention realizes accurate monitoring of whether the shock wave electrode successfully releases shock waves with therapeutic effects. Specifically, the combination of the current adjustment resistor R1 and the optical coupler in the detection circuit enables the system to identify whether the shock wave electrode is normally discharged by monitoring whether the voltage in the circuit drops.

[0032] In addition, this technical solution can also detect short-circuit and open-circuit faults of shock wave electrodes at the same time. Through the voltage change of the optocoupler output, the system can identify whether the electrode fails to discharge normally due to short-circuit or open-circuit, which is crucial for the safe operation and treatment effect of medical equipment. This fault detection capability ensures the safety and effectiveness of the medical process and avoids the risk to patients caused by equipment failure.

[0033] It should be noted that by selecting current adjustment resistors R1 with different resistance values, the sensitivity of the detection circuit can be adjusted. When higher sensitivity is required, a current adjustment resistor R1 with a smaller resistance value can be selected. Of course, the resistance value of the current adjustment resistor R1 cannot be too small. Too small a value will cause it to consume a large amount of energy, thereby reducing the energy (including light energy and mechanical energy) carried by the shock wave released by the shock wave electrode. In actual selection, the resistance value of the current adjustment resistor R1 can be selected according to the minimum drive current and rated current of the optocoupler. Under the premise of being able to meet the drive of the optocoupler, the larger the resistance value of the current adjustment resistor R1, the smaller the energy consumed by the current adjustment resistor R1, and the greater the energy carried by the shock wave released by the shock wave electrode. In addition, because the width of the high-voltage pulse is 1μs-2μs when the shock wave electrode discharges, it is advisable to use a fast optocoupler as the optocoupler. Generally, a nanosecond optocoupler can meet the use requirements.

[0034] The boost circuit includes a high-voltage power supply, a first capacitor C1 and a first rectifier diode D1, one end of the high-voltage power supply is electrically connected to one end of the first capacitor C1, the other end of the high-voltage power supply is electrically connected to the other end of the first capacitor C1, and the first rectifier diode D1 is arranged between one end of the high-voltage power supply and one end of the first capacitor C1.

[0035] In a feasible implementation, the boost circuit can achieve efficient voltage conversion and energy storage. The connection between the high-voltage power supply and the first capacitor C1 enables the circuit to accumulate a large amount of electrical energy in a short time, while the use of the first rectifier diode D1 ensures the unidirectional flow of current. This design helps to quickly release high voltage when needed, meeting the needs of specific equipment for instantaneous high voltage.

[0036] Preferably, the boost circuit further comprises a control module for controlling the high voltage power supply to be turned on and off.

[0037] Through the control module, the state of the high-voltage power supply can be accurately managed, and the opening and closing of the high-voltage power supply can be realized remotely or automatically. Secondly, the addition of the control module also enhances the reliability and stability of the circuit. When a fault is detected, the control module can quickly cut off the high-voltage power supply to prevent the fault from further expanding and protect the circuit from damage. In addition, by adjusting the output voltage of the high-voltage power supply through the control module, the output voltage can be controlled more accurately to meet the needs of different loads and improve the efficiency and performance of the entire system.

[0038] The discharge circuit includes at least one shock wave electrode, and the corresponding detection circuit is connected to all shock wave electrodes in the same single circuit. Figure 3 As shown, in the embodiment of the present invention, there is one shock wave electrode, and the high voltage power supply can provide energy to the shock wave electrode, so as to achieve the breakdown of the shock wave electrode to generate arc discharge.

[0039] Preferably, if Figure 4 As shown, the discharge circuit includes at least one second capacitor C2, at least one second capacitor C2 is electrically connected to at least one shock wave electrode in a one-to-one correspondence, one end of the second capacitor C2 is electrically connected to one end of the corresponding shock wave electrode, and the other end of the second capacitor C2 is electrically connected to the other end of the corresponding shock wave electrode.

[0040] After the second capacitor C2 is introduced, the current in the pre-breakdown stage mainly flows through the second capacitor C2 and stores energy in the second capacitor C2. When the shock wave electrode breaks down, this part of the energy in the second capacitor C2 can be released to the shock wave electrode, thereby improving the energy release efficiency and reducing the ablation of the shock wave electrode.

[0041] The second capacitor C2 serves as an energy node, so that the high-voltage power supply first charges the second capacitor C2 and the shock wave electrode, and then the second capacitor C2 discharges to the shock wave electrode. Through the energy storage effect of the second capacitor C2, a pulse current with high amplitude and long pulse width is realized in the circuit in which the second capacitor C2 discharges to the shock wave electrode, so that the shock wave electrode can release a shock wave with higher energy; at the same time, in the pre-breakdown stage of the shock wave electrode, the shunting effect of the second capacitor C2 can effectively reduce the loss of the shock wave electrode due to melting and ablation, effectively prolong the service life of the shock wave electrode, and enable the shock wave electrode to release a sufficient number of shock waves to achieve a better therapeutic effect.

[0042] The mechanical energy carried by the shock wave depends on the electric energy released by the second capacitor C2 to the shock wave electrode, and no longer depends on the electric energy accumulated on the shock wave electrode, so that the mechanical energy carried by the shock wave is no longer limited by the structural design of the shock wave electrode. At the same time, the influence of the polarity of the shock wave electrode on the mechanical energy carried by the shock wave is weakened.

[0043] When the voltage across the shock wave electrode reaches the breakdown voltage of the shock wave electrode, the shock wave electrode enters the pre-breakdown stage, at which time the shock wave electrode begins to melt and ablate. Due to the shunting of the second capacitor C2, the current flowing through the shock wave electrode is effectively reduced. Therefore, the electric energy consumed by the shock wave electrode in the pre-breakdown stage is reduced, and the heat energy converted from the consumed electric energy on the shock wave electrode is also reduced. The loss of the shock wave electrode caused by the melting and ablation of the heat energy is also reduced, which prolongs the service life of the shock wave electrode.

[0044] The second capacitor C2 can absorb the high-frequency signal components generated by the high-voltage power supply due to the conduction and shutdown of the switching electronic components, greatly reducing the high-frequency noise radiated outward, and has the technical effect of reducing high-frequency noise and electromagnetic interference.

[0045] The shock wave power supply also includes a switching component Q1 for controlling whether the shock wave electrode discharges and a current limiting resistor R2 for protecting the switching component Q1, one end of the current limiting resistor R2 is electrically connected to the other end of the discharge circuit, one end of the switching component Q1 is electrically connected to the other end of the current limiting resistor R2, and the other end of the switching component Q1 is connected to the ground wire.

[0046] Preferably, the shock wave power supply further includes a control chip (Processor) electrically connected to the switch component Q1 and the detection circuit.

[0047] First of all, this design makes the control of the power supply system more intelligent and precise. The control chip can monitor and adjust the state of the switching component Q1 in real time, as well as the working condition of the detection circuit, so as to achieve fine control of the shock wave power supply. This intelligent management not only improves the response speed and control accuracy of the power supply system, but also helps to improve the stability and reliability of the power supply system.

[0048] Secondly, through the electrical connection between the control chip and the detection circuit, the real-time monitoring and fault diagnosis of the working state of the shock wave power supply can be effectively realized. The control chip can receive the signal from the detection circuit, analyze the working state of the shock wave power supply, and promptly discover and deal with possible problems. This real-time monitoring and response mechanism improves the reliability and stability of the power supply system, reduces maintenance costs, and also provides important data support for the maintenance and performance optimization of the power supply.

[0049] The present invention also provides a shock wave release detection method, which is performed using the above-mentioned shock wave power supply. The shock wave release detection method comprises:

[0050] When the switch component Q1 is turned off, the light-emitting diode in the optocoupler does not emit light, the first field effect transistor in the optocoupler is turned on and the second field effect transistor is turned off, and the output voltage Vout of the optocoupler is at a high level;

[0051] When the switch-type component Q1 is turned on, the light-emitting diode in the optocoupler emits light, the first field-effect transistor in the optocoupler is turned off and the second field-effect transistor is turned on, and the output voltage Vout of the voltage detection circuit is low at this time; when the shock wave electrode is discharged, the voltage at both ends of the shock wave electrode is instantly reduced to 0V, and the light-emitting diode in the optocoupler does not emit light, the first field-effect transistor in the optocoupler is turned on and the second field-effect transistor is turned off, and the output voltage Vout of the optocoupler is high at this time, thereby forming a voltage rising edge;

[0052] When the circuit where the shock wave electrode is located is short-circuited, the light-emitting diode in the optocoupler does not emit light, the first field effect tube in the optocoupler is turned on and the second field effect tube is turned off, and the output voltage Vout in the optocoupler is at a high level;

[0053] When the circuit where the shock wave electrode is located is disconnected, the light-emitting diode in the optocoupler emits light, the first field effect tube in the optocoupler is turned off and the second field effect tube is turned on, and the output voltage Vout of the optocoupler is at a low level.

[0054] The present invention can detect both the open circuit and the short circuit of the electrode, and can cover two fault states of the circuit where the shock wave electrode is located, thereby achieving the purpose of completely detecting the state of the circuit where the shock wave electrode is located.

[0055] The above is only a specific embodiment of the present invention, and cannot be used to limit the scope of the invention. Therefore, the replacement of equivalent components, or equivalent changes and modifications made according to the scope of protection of the patent of the present invention, should still fall within the scope of this patent. In addition, the technical features of the present invention can be freely combined with each other, with each other, and with each other.

Claims

1. A shock wave power supply, characterized in that: It includes a boost circuit, at least one detection circuit and at least one discharge circuit; the boost circuit and all the discharge circuits are connected to the same single circuit, at least one detection circuit is connected to at least one discharge circuit in a one-to-one correspondence, and one end of the detection circuit is electrically connected to one end of the corresponding discharge circuit, and the other end of the detection circuit is electrically connected to the other end of the corresponding discharge circuit.

2. The shock wave power supply according to claim 1, characterized in that: The detection circuit comprises: A current regulating resistor, one end of which is electrically connected to one end of the corresponding discharge circuit; An optical coupler, one end of the input side is electrically connected to the other end of the current adjustment resistor, and the other end of the optical coupler input side is electrically connected to the other end of the discharge circuit. The optical coupler can detect a voltage drop in the discharge circuit.

3. The shock wave power supply according to claim 1, characterized in that: The boost circuit includes a high-voltage power supply, a first capacitor and a first rectifier diode, one end of the high-voltage power supply is electrically connected to one end of the first capacitor, the other end of the high-voltage power supply is electrically connected to the other end of the first capacitor, and the first rectifier diode is electrically connected between one end of the high-voltage power supply and one end of the first capacitor.

4. The shock wave power supply according to claim 3, characterized in that: The boost circuit further includes a control module for controlling the high voltage power supply to be turned on and off.

5. The shock wave power supply according to claim 1, characterized in that: The discharge circuit includes at least one shock wave electrode, and the corresponding detection circuit is connected to the same single circuit with all the shock wave electrodes.

6. The shock wave power supply according to claim 5, characterized in that: The discharge circuit includes at least one second capacitor, at least one second capacitor is electrically connected to at least one shock wave electrode in a one-to-one correspondence, one end of the second capacitor is electrically connected to one end of the corresponding shock wave electrode, and the other end of the second capacitor is electrically connected to the other end of the corresponding shock wave electrode.

7. The shock wave power supply according to claim 1, characterized in that: The shock wave power supply also includes a current limiting resistor and a switch type component, one end of the current limiting resistor is electrically connected to the other end of the discharge circuit, one end of the switch type component is electrically connected to the other end of the current limiting resistor, and the other end of the switch type component is connected to the ground wire.

8. The shock wave power supply according to claim 7, characterized in that: The shock wave power supply also includes a control chip electrically connected to the switch type component and the detection circuit.

9. A shock wave release detection method, using the shock wave power supply, characterized in that: The shock wave power supply is the shock wave power supply according to any one of claims 1 to 8.

10. The shock wave release detection method according to claim 9, characterized in that: include: When the switch-type component is turned off, the light-emitting diode in the optocoupler does not emit light, the first field-effect transistor in the optocoupler is turned on and the second field-effect transistor is turned off, and the output voltage Vout of the optocoupler is at a high level; When the switch-type component is turned on, the light-emitting diode in the optical coupler emits light, the first field effect tube in the optical coupler is turned off and the second field effect tube is turned on, and at this time the output voltage Vout of the voltage detection circuit is low level; when the shock wave electrode is discharged, the voltage at both ends of the shock wave electrode is instantly reduced to 0V, at this time the light-emitting diode in the optical coupler does not emit light, the first field effect tube in the optical coupler is turned on and the second field effect tube is turned off, and at this time the output voltage Vout of the optical coupler is high level, thereby forming a voltage rising edge; When the shock wave electrode is short-circuited, the light-emitting diode in the optical coupler does not emit light, the first field effect transistor in the optical coupler is turned on and the second field effect transistor is turned off, and the output voltage Vout in the optical coupler is at a high level; When the shock wave electrode is disconnected, the light emitting diode in the optocoupler emits light, the first field effect transistor in the optocoupler is turned off and the second field effect transistor is turned on, and at this time, the output voltage Vout of the optocoupler is at a low level.

Images