Shock wave generation method and shock wave system

Abstract

Disclosed is a shock wave generation method, comprising the following steps: a boost module (11) charging an energy storage capacitor (C1); when the voltage of the energy storage capacitor (C1) reaches a set value, the boost module (11) stopping charging the energy storage capacitor (C1), and the energy storage capacitor (C1) charging an energy relay capacitor (C2) and a shock wave electrode (31); and when the voltage across the shock wave electrode (31) reaches the breakdown voltage of the shock wave electrode (31), the energy relay capacitor (C2) stopping charging and discharging to the shock wave electrode (31), the energy storage capacitor (C1) continuing to discharge to the shock wave electrode (31), and the shock wave electrode (31) discharging, thereby causing breakdown and releasing a shock wave. Further provided is a shock wave system for implementing the shock wave generation method. By means of increasing the peak value and pulse width of a pulse current formed by a circuit where the shock wave electrode (31) is located when the shock wave electrode (31) releases the shock wave, that is, increasing the pulse energy of the pulse current, the shock wave energy released by the shock wave from the shock wave electrode (31) is effectively increased, and the dependence of the shock wave energy on the electrode structure is also avoided.

Description

Method for generating shock wave and shock wave system

[0001] This application claims priority to Chinese patent application No. CN202411382513.3, filed on September 30, 2024, the contents of which are hereby incorporated by reference in their entirety. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of liquid-electric shock wave, in particular to a method for generating shock wave and a shock wave system. BACKGROUND

[0003] Liquid-electric shock wave technology has a wide range of applications in the treatment of kidney extracorporeal lithotripsy, peripheral vascular calcification, auxiliary coronary artery stent implantation and pain relief (such as muscles). The existing liquid-electric shock wave system includes an energy storage capacitor arranged in a high-voltage pulse power supply and a shock wave electrode electrically connected with the energy storage capacitor. The energy storage capacitor charges the shock wave electrode. When the voltage across the shock wave electrode reaches the breakdown voltage of the shock wave electrode, the shock wave electrode discharges and releases a shock wave. The existing liquid-electric shock wave system cannot form a pulse current with a high peak value, so it cannot release a shock wave with high intensity.

[0004] At present, this problem cannot be solved. SUMMARY

[0005] Therefore, the present disclosure provides a method for generating shock wave and a shock wave system. By arranging an energy relay capacitor, the peak value of the pulse current during the release of the shock wave is improved, the shock wave electrode releases a shock wave with high intensity, the treatment effect of a single effective shock wave is greatly improved, the heat loss of the shock wave electrode in the pre-breakdown stage is reduced, the melting loss of the shock wave electrode is effectively reduced, the number of times of releasing effective shock waves by the shock wave electrode is effectively improved, and the final treatment purpose is achieved.

[0006] The present disclosure provides the following technical solution: a method for generating shock wave, comprising the following steps:

[0007] The boost module charges the energy storage capacitor;

[0008] When the voltage of the energy storage capacitor reaches a set value, the boost module stops charging the energy storage capacitor, and the energy storage capacitor charges the energy relay capacitor and the shock wave electrode;

[0009] When the voltage across the shock wave electrode reaches the breakdown voltage of the shock wave electrode, the energy relay capacitor stops charging and discharges to the shock wave electrode, the energy storage capacitor continues to discharge to the shock wave electrode, and the shock wave electrode discharges, breaks down and releases a shock wave.

[0010] The shock wave system for implementing the shock wave generation method comprises a high-voltage pulse power supply, a shock wave guide tube and an energy relay capacitor.

[0011] Compared with the prior art, the at least one technical solution adopted by the embodiments of the present specification can achieve the beneficial effects at least including: the present disclosure improves the peak value and pulse width of the pulse current formed by the circuit in which the shock wave electrode is located when the shock wave electrode releases the shock wave, i.e., improves the pulse energy of the pulse current, thereby effectively improving the shock wave energy released by the shock wave released by the shock wave electrode, and avoiding the dependence of the shock wave energy on the electrode structure. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0013] FIG. 1 is a circuit principle schematic diagram of the prior art scheme;

[0014] FIG. 2 is a device connection schematic diagram of the present disclosure;

[0015] FIG. 3 is a circuit principle schematic diagram of the first embodiment of the first embodiment of the present disclosure;

[0016] FIG. 4 is a circuit principle schematic diagram of the second embodiment of the first embodiment of the present disclosure;

[0017] FIG. 5 is a circuit principle schematic diagram of the third embodiment of the first embodiment of the present disclosure;

[0018] FIG. 6 is a circuit principle schematic diagram of the fourth embodiment of the first embodiment of the present disclosure;

[0019] FIG. 7 is a circuit principle schematic diagram of the fifth embodiment of the first embodiment of the present disclosure;

[0020] FIG. 8 is a circuit principle schematic diagram of the sixth embodiment of the first embodiment of the present disclosure;

[0021] FIG. 9 is a circuit principle schematic diagram of the seventh embodiment of the first embodiment of the present disclosure;

[0022] Fig. 10 is a circuit configuration diagram of a first embodiment of the second embodiment of the present disclosure;

[0023] Fig. 11 is a circuit configuration diagram of a second embodiment of the second embodiment of the present disclosure;

[0024] Fig. 12 is a circuit configuration diagram of a third embodiment of the second embodiment of the present disclosure;

[0025] Fig. 13 is a circuit configuration diagram of a fourth embodiment of the second embodiment of the present disclosure;

[0026] Fig. 14 is a circuit configuration diagram of a fifth embodiment of the second embodiment of the present disclosure;

[0027] Fig. 15 is a circuit configuration diagram of a first embodiment of the third embodiment of the present disclosure;

[0028] Fig. 16 is a circuit configuration diagram of a second embodiment of the third embodiment of the present disclosure;

[0029] Fig. 17 is a circuit configuration diagram of a third embodiment of the third embodiment of the present disclosure;

[0030] Fig. 18 is a circuit configuration diagram of a fourth embodiment of the third embodiment of the present disclosure;

[0031] Fig. 19 is a circuit configuration diagram of a fifth embodiment of the third embodiment of the present disclosure;

[0032] Fig. 20 is a circuit configuration diagram of a first embodiment of the fourth embodiment of the present disclosure;

[0033] Fig. 21 is a circuit configuration diagram of a second embodiment of the fourth embodiment of the present disclosure;

[0034] Fig. 22 is a circuit configuration diagram of a third embodiment of the fourth embodiment of the present disclosure;

[0035] Fig. 23 is a circuit configuration diagram of a fourth embodiment of the fourth embodiment of the present disclosure;

[0036] Fig. 24 is a circuit configuration diagram of a fifth embodiment of the fourth embodiment of the present disclosure;

[0037] Fig. 25 is a circuit configuration diagram of a first embodiment of the fifth embodiment of the present disclosure;

[0038] Fig. 26 is a circuit configuration diagram of a second embodiment of the fifth embodiment of the present disclosure;

[0039] Fig. 27 is a circuit configuration diagram of a third embodiment of the fifth embodiment of the present disclosure;

[0040] Fig. 28 is a circuit configuration diagram of a sixth embodiment of the present disclosure.

[0041] Fig. 29 is a circuit schematic diagram of a seventh embodiment of the present disclosure.

[0042] Fig. 29 is a circuit schematic diagram of a seventh embodiment of the present disclosure. DETAILED DESCRIPTION

[0043] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0044] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0045] The shock wave electrode corresponds to a capacitor when not broken down, and corresponds to an inductor after discharge breakdown. When the intensity of a single shock wave is large enough, the impact of the single shock wave can loosen or cause cracks in the calcified lesion tissue of the treatment site, i.e., the single shock wave has a therapeutic effect, which is referred to as an effective shock wave in this paper. A single discharge breakdown of the shock wave electrode can release an effective shock wave, which is referred to as an effective discharge breakdown in this paper.

[0046] In order to realize that the discharge breakdown of the shock wave electrode can release a shock wave with a therapeutic effect, the existing electrohydraulic shock wave system has a switching type component electrically connected in the discharge circuit. The energy storage capacitor charges the shock wave electrode when the switching type component is in an open state, and discharges when the switching type component is in a closed state. When the voltage across the shock wave electrode reaches its breakdown voltage, the shock wave electrode discharges and breaks down to form a shock wave. Under the condition that the structure and voltage of the shock wave electrode and other conditions are basically the same, the intensity of the shock wave is positively correlated with the peak value of the pulse current. Therefore, the intensity of the shock wave released by the existing electrohydraulic shock wave system is positively correlated with the peak value of the pulse current that the switching type component can pass. The GDT (Gas Discharge Tube) is selected as a switching type electronic component by the existing electrohydraulic shock wave system in order to form a shock wave with a larger intensity, due to its large current-carrying capacity, small static capacitance, small voltage across the two ends after conduction, and other characteristics. The junction capacitance of the GDT is low; in the open state, it corresponds to an open circuit and has a large resistance; after breakdown, it corresponds to a short circuit and can pass a large current with a small voltage drop.

[0047] As shown in Fig. 1, the existing liquid-electric shock wave system generally comprises a high-voltage pulse power supply 100 and a shock wave guide tube 300. The high-voltage pulse power supply 100 at least comprises a voltage boosting module 101 and an energy storage capacitor C0 (hereinafter referred to as C0) which are electrically connected with each other, and further comprises a control module 102 which is electrically connected with the voltage boosting module 101 and used to control the opening and closing of the voltage boosting module 101, and a rectifier diode D0 (hereinafter referred to as D0) which is electrically connected with the voltage boosting module 101 and C0 and used to convert alternating current into direct current and limit the current flow. The high-voltage pulse power supply 100 further comprises a gas discharge tube GDT0 (hereinafter referred to as GDT0) and a current limiting resistor R0 (hereinafter referred to as R0) which are electrically connected with each other and used to adjust the size of the GDT0 freewheeling. The shock wave guide tube 300 comprises a shock wave electrode 301 which is located at the treatment end of the shock wave guide tube 300. The shock wave electrode 301 is electrically connected with C0 and GDT0 through a connecting assembly 200 (commonly used is a connecting cable). In the figure, R10 is an equivalent resistance in the connecting assembly 200 for connecting the negative pole of the shock wave guide tube, R20 is an equivalent resistance in the connecting assembly 200 for connecting the positive pole of the shock wave guide tube, and the internal resistances of the high-voltage pulse power supply 100 and the shock wave guide tube 300 are not embodied. Among them, the control module 102 can adopt the existing microcontroller DSP (Digital Signal Processing, digital signal processing technology) chip, MCU (Microcontroller Unit, microcontroller unit) or FPGA (Field Programmable Gate Array, field programmable logic gate array), and the control module 102 commonly seen on the market which can control the voltage boosting module 101 can be used.

[0048] In the process of single discharge breakdown of the shock wave electrode 301, it is divided into two stages. In the initial state, the GDT0 and the voltage boosting module 101 are both in the off state.

[0049] First stage: charging. The control module 102 controls the voltage boosting module 101 to be turned on, and the voltage boosting module 101 charges C0, and the voltage across C0 continues to rise. The voltage across C0 is divided through the shock wave electrode 301, R0 and GDT0, and there is no current in the circuit where the shock wave electrode 301 and the GDT0 are located.

[0050] Second stage: pre-breakdown and release shock wave. When the voltage across the shock wave electrode 301 reaches its breakdown voltage and the voltage across the GDT0 reaches its discharge voltage, the control module 102 controls the boost module 101 to be disconnected. At the same time, both the shock wave electrode 301 and the GDT0 are breakdown and conduct, and the internal resistance of the shock wave electrode 301 and the internal resistance of the GDT0 are extremely low. The electrical energy in the C0 is released to the shock wave electrode 301 and the GDT0 in the direction of the arrow in the figure, and a pulse current is formed in the circuit. When the voltage across the GDT0 drops below its discharge voltage, the GDT0 is disconnected, the shock wave is released, and the entire liquid-electric shock wave system returns to the initial state. In this process, through the pulse current flowing through the shock wave electrode 301, the electrical energy released from the C0 to the shock wave electrode 301 and the electrical energy stored in the shock wave electrode 301 in the charging stage are converted into a large amount of heat energy and mechanical energy, and a large amount of heat and shock wave carrying mechanical energy are released through the discharge breakdown of the shock wave electrode 301.

[0051] In the stage of pre-breakdown and release shock wave, the C0 is discharged through the discharge circuit composed of the C0, the connecting assembly 200, the shock wave electrode 301, the R0 and the GDT0. The greater the energy of the pulse current flowing through the shock wave electrode 301 when the shock wave electrode 301 discharges and breaks down to release the shock wave, the greater the mechanical energy carried by the shock wave, and the better the treatment effect of the shock wave. Although the gas discharge tube can generate a large energy shock wave through a large current, its conduction and shutdown are not controlled, that is, the pulse width of the pulse current cannot be controlled, and because its working principle is air breakdown conduction, its service life is short, so that the existing liquid-electric shock wave system cannot release a sufficient number of shock waves, limiting the treatment effect of the shock wave. In recent years, switch-type components such as SCR (Silicon Controlled Rectifier), MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) and IGBT (Insulate-Gate Bipolar Transistor) have also appeared. Among them, the SCR can only control its conduction and cannot control its shutdown, the current that the MOSFET can withstand is much smaller than the IGBT, and the IGBT is favored because of its short switching action time and high power withstand. However, the current that the IGBT discrete component can withstand is generally not more than 100A, and it is difficult to form a larger shock wave energy. If a larger shock wave energy is to be achieved, an IGBT module or a MOSFET module needs to be selected, both of which are large in size and expensive in price, which challenges the cost saving and miniaturization design.

[0052] Based on this, the application provides a shock wave generation method, comprising the following steps:

[0053] Step 1: Energy storage stage, energy storage capacitor stores energy; boost module 11 charges energy storage capacitor C1;

[0054] Step 2: Charging stage, energy relay capacitor and shock wave electrode are charged; when the voltage of energy storage capacitor C1 reaches the set value, boost module 11 stops charging energy storage capacitor C1, and energy storage capacitor C1 charges energy relay capacitor C2 and shock wave electrode 31;

[0055] Step 3: Discharge stage, shock wave electrode pre-breakdown and release shock wave; when the voltage across shock wave electrode 31 reaches the breakdown voltage of shock wave electrode 31, shock wave electrode 31 discharges and breaks down, energy relay capacitor C2 stops charging and discharges to shock wave electrode 31, energy storage capacitor C1 continues to discharge to shock wave electrode 31, and shock wave electrode 31 discharges and breaks down to generate a shock wave.

[0056] Compared with the prior art, the shock wave generation method provided by the embodiment of the present disclosure sets energy relay capacitor C2 as an energy node between energy storage capacitor C1 and shock wave electrode 31, so that energy storage capacitor C1 first charges energy relay capacitor C2 and shock wave electrode 31, and then energy storage capacitor C1 and energy relay capacitor C2 both discharge to shock wave electrode 31. Through the energy storage effect of energy relay capacitor C2, a high-amplitude and long-pulse-width pulse current is realized in the circuit in which energy storage capacitor C1 and energy relay capacitor C2 discharge to shock wave electrode 31, so that shock wave electrode 31 can release a shock wave with higher energy. At the same time, during the pre-breakdown stage of shock wave electrode 31, through the shunt effect of energy relay capacitor C2, the loss of shock wave electrode 31 due to melting ablation can be effectively reduced, the service life of shock wave electrode 31 is effectively prolonged, and shock wave electrode 31 can release a sufficient number of shock waves to achieve a better treatment effect.

[0057] During the charging stage of step 2, i.e. the stage in which energy storage capacitor C1 charges energy relay capacitor C2 and shock wave electrode 31, part of the electrical energy of energy storage capacitor C1 is stored in shock wave electrode 31 through current, and the other part of the electrical energy is stored in energy relay capacitor C2 through current. Compared with the prior art, through the energy storage and shunt of energy relay capacitor C2, the current flowing through shock wave electrode 31 is effectively reduced, thereby effectively reducing the electrical energy lost by shock wave electrode 31 during this stage.

[0058] Energy storage capacitor C1 continues to charge shock wave electrode 31 until it reaches the discharge stage of step 3, i.e. the stage in which shock wave electrode pre-breakdowns, discharges and breaks down, and releases a shock wave carrying mechanical energy.

[0059] When the voltage across the shockwave electrode 31 reaches the breakdown voltage of the shockwave electrode 31, the shockwave electrode 31 enters a pre-breakdown phase, at which the shockwave electrode 31 starts to melt and ablate. Due to the shunting of the energy relay capacitor C2, the current flowing through the shockwave electrode 31 is effectively reduced, and thus the electrical energy consumed by the shockwave electrode 31 in the pre-breakdown phase is reduced, and the thermal energy converted from the electrical energy on the shockwave electrode 31 is also reduced, and thus the thermal energy-induced ablation of the shockwave electrode 31 is reduced, which prolongs the service life of the shockwave electrode 31. Therefore, in step 3, the shunting of the energy relay capacitor C2 not only further effectively reduces the electrical energy consumed by the shockwave electrode 31, but also effectively prolongs the service life of the shockwave electrode 31. The service life of the shockwave electrode 31 refers to the number of times of discharging and breakdown of the shockwave electrode 31 to release effective shockwaves. The effective shockwave refers to a shockwave that has a therapeutic effect on the tissue to be treated.

[0060] The shockwave electrode 31 rapidly enters a discharge breakdown phase from the pre-breakdown phase. As known in the art, at the moment of the discharge breakdown of the shockwave electrode 31, the shockwave electrode 31 behaves as an inductor, which causes the electrical energy of the storage capacitor C1 to be released to the shockwave electrode 31, and at the same time, the energy relay capacitor C2 stops charging and starts discharging to the shockwave electrode 31. In this process of discharging from the storage capacitor C1 and the energy relay capacitor C2 to the shockwave electrode 31, compared with the prior art, more electrical energy is released to the shockwave electrode 31, which causes the circuit in which the shockwave electrode 31 is located to form a pulse current with a higher peak value and a larger pulse width. As a result, the shockwave electrode 31 can convert more electrical energy into mechanical energy, so that the shockwave electrode 31 releases a shockwave carrying more mechanical energy, which effectively improves the therapeutic effect of the shockwave. Further, in a specific embodiment, the present disclosure further includes the following steps:

[0061] When the voltage across the shockwave electrode 31 reaches the breakdown voltage of the shockwave electrode 31, the shockwave electrode 31 enters a pre-breakdown phase, at which the shockwave electrode 31 starts to melt and ablate. Due to the shunting of the energy relay capacitor C2, the current flowing through the shockwave electrode 31 is effectively reduced, and thus the electrical energy consumed by the shockwave electrode 31 in the pre-breakdown phase is reduced, and the thermal energy converted from the electrical energy on the shockwave electrode 31 is also reduced, and thus the thermal energy-induced ablation of the shockwave electrode 31 is reduced, which prolongs the service life of the shockwave electrode 31. Therefore, in step 3, the shunting of the energy relay capacitor C2 not only further effectively reduces the electrical energy consumed by the shockwave electrode 31, but also effectively prolongs the service life of the shockwave electrode 31. The service life of the shockwave electrode 31 refers to the number of times of discharging and breakdown of the shockwave electrode 31 to release effective shockwaves. The effective shockwave refers to a shockwave that has a therapeutic effect on the tissue to be treated.

[0062] When one end of the shock wave electrode 31 is electrically connected to one end of the energy relay capacitor C2, and the other end of the shock wave electrode 31 is electrically connected to the other end of the energy relay capacitor C2, the voltage across the shock wave electrode 31 and the voltage across the energy relay capacitor C2 are almost equal. Considering the resistance in the circuit due to the connecting wires and the like, the voltage across the shock wave electrode 31 can reach the breakdown voltage of the shock wave electrode 31 when the voltage across the energy relay capacitor C2 reaches or exceeds the sum of the breakdown voltage of the shock wave electrode 31 and the breakdown voltage of the voltage-limiting protection component, i.e., when the voltage across the energy relay capacitor C2 reaches or exceeds the breakdown voltage of the voltage-limiting protection component. At this time, the energy relay capacitor C2 stops charging and discharges to the shock wave electrode 31, the energy storage capacitor C1 continues to discharge to the shock wave electrode 31, the shock wave electrode 31 discharges and breaks down to release a shock wave, the shock wave carries a large mechanical energy and has a good treatment effect.

[0063] Further, in another specific embodiment, the voltage across the shock wave electrode 31 reaches the breakdown voltage of the shock wave electrode 31 when the voltage across the energy relay capacitor C2 reaches at least the sum of the breakdown voltage of the shock wave electrode 31 and the breakdown voltage of the voltage-limiting protection component.

[0064] The shock wave electrode 31 can also be further electrically connected with the voltage-limiting protection component, that is, one end or the other end of the shock wave electrode 31 is electrically connected with one end or the other end of the voltage-limiting protection component. The shock wave electrode 31 and the voltage-limiting protection component electrically connected with each other are electrically connected with one end of the energy relay capacitor C2 and the other end of the energy relay capacitor C2. At this time, the voltage across the energy relay capacitor C2 is almost equal to the sum of the voltage across the shock wave electrode 31 and the voltage across the voltage-limiting protection component. Considering the resistance in the circuit due to the connecting wires and the like, when the voltage across the energy relay capacitor C2 reaches or exceeds the sum of the breakdown voltage of the shock wave electrode 31 and the breakdown voltage of the voltage-limiting protection component, that is, when the voltage across the energy relay capacitor C2 reaches or exceeds the sum of the breakdown voltage of the shock wave electrode 31 and the breakdown voltage of the voltage-limiting protection component, the voltage across the shock wave electrode 31 can reach the breakdown voltage of the shock wave electrode 31. As described above, at this time, the energy relay capacitor C2 stops charging and discharges to the shock wave electrode 31, the energy storage capacitor C1 continues to discharge to the shock wave electrode 31, the shock wave electrode 31 discharges and breaks down to release a shock wave, the shock wave carries a large mechanical energy and has a good treatment effect. Compared with the previous specific embodiment, the current in the circuit in which the shock wave electrode 31 is located is further reduced, the electrical energy loss on the shock wave electrode 31 is further reduced, and the service life of the shock wave electrode 31 is further prolonged. Moreover, due to the presence of the voltage-limiting protection component, the voltage across the energy relay capacitor C2 is effectively increased, and the electrical energy stored on the energy relay capacitor C2 is also effectively increased. In the process of discharging of the energy storage capacitor C1 and the energy relay capacitor C2 to the shock wave electrode 31, the shock wave electrode 31 can convert more electrical energy into mechanical energy, further improving the mechanical energy carried by the shock wave released by the shock wave electrode 31, that is, the shock wave further has a better treatment effect. The shock wave generation method of the present disclosure can effectively increase the peak value of the pulse current flowing through the shock wave electrode 31 when the shock wave electrode 31 discharges and breaks down to release a shock wave, form a shock wave with large energy when the shock wave electrode 31 discharges and breaks down, improve the treatment effect of the shock wave, prolong the service life of the shock wave electrode 31, and enable the shock wave electrode 31 to release a sufficient number of shock waves with a treatment effect to achieve the ultimate treatment purpose.

[0065] As shown in FIGS. 2-29, the present application also provides a shock wave system for implementing the aforementioned shock wave generation method, comprising a high-voltage pulse power supply 10, a shock wave guide tube 30, and an energy relay capacitor C2 (hereinafter referred to as C2); the high-voltage pulse power supply 10 comprises a power supply module and switching-type electronic components, the power supply module comprises a boost module 11 and an energy storage capacitor C1 (hereinafter referred to as C1) electrically connected to each other; the shock wave guide tube 30 comprises a shock wave electrode 31; the power supply module, the shock wave electrode 31, and the switching-type electronic components are electrically connected; one end of the energy relay capacitor C2 is electrically connected to one end of the shock wave electrode 31, and the other end of the energy relay capacitor C2 is electrically connected to the other end of the shock wave electrode 31.

[0066] Wherein: the boost module 11 and the energy storage capacitor C1 electrically connected to each other means that one end of the boost module 11 is electrically connected to one end of the C1, and the other end of the boost module 11 is electrically connected to the other end of the C1; the power supply module, the shock wave electrode 31, and the switching-type electronic components electrically connected means that the three are electrically connected in the same single circuit. It should be noted that the electrical connection referred to herein means connecting electrical equipment or components to each other through wires, cables, or other types of wires to achieve the transmission of electric current and the exchange of signals. It can be permanent or detachable, depending on the type of connector used and the application scenario.

[0067] The shock wave system provided by the embodiments of the present disclosure can implement the aforementioned shock wave generation method, effectively increase the peak value of the pulse current flowing through the shock wave electrode 31 when the shock wave electrode 31 discharges and breaks down to release a shock wave, form a shock wave with large energy when the shock wave electrode 31 discharges and breaks down, improve the therapeutic effect of the shock wave, and prolong the service life of the shock wave electrode 31, so that the shock wave electrode 31 can release a sufficient number of shock waves with therapeutic effects to achieve the ultimate therapeutic purpose.

[0068] Preferably, the capacitance value of the energy relay capacitor C2 is greater than or equal to the equivalent capacitance value of the shock wave electrode 31 and less than the capacitance value of the energy storage capacitor C1.

[0069] Because the discharge breakdown of the liquid-electric shock wave electrode is an ionization process, and the breakdown voltage of the shock wave electrode is a range value rather than a fixed value. Within the range of the breakdown voltage of the shock wave electrode, if the voltage across the shock wave electrode is higher, the ionization time required for the discharge breakdown of the shock wave electrode is shorter, and if the voltage across the shock wave electrode is lower, the ionization time required for the discharge breakdown of the shock wave electrode is longer. Therefore, if the capacitance value of C2 is too large, for example, greater than or equal to the capacitance value of C1, on the one hand, the charging of the shock wave electrode 31 will be relatively slow, and on the other hand, C2 will take away too much electrical energy, so that the shock wave electrode 31 discharges at a relatively low breakdown voltage, although the shock wave electrode 31 can still release a shock wave carrying a large mechanical energy, but the peak value of the pulse current of the shock wave electrode 31 at the time of discharge breakdown will be relatively low, so the mechanical energy carried by the shock wave will also be relatively low; at the same time, the capacitance value of C2 cannot be too small, for example, less than the equivalent capacitance value of the shock wave electrode 31, which will lead to that the electrical energy stored in C2 is less than the electrical energy stored in the shock wave electrode 31 when the shock wave electrode 31 discharges, which has limited effect on improving the mechanical energy carried by the shock wave released by the shock wave electrode 31. By adjusting the capacitance value of the energy relay capacitor C2, the characteristics of the shock wave can be optimized to adapt to different treatment needs or application scenarios, and the flexibility and effectiveness of the treatment can be improved. As can be seen from the above, there is an optimal value for the capacitance value of the energy relay capacitor C2, and when the capacitance value of the energy relay capacitor C2 is the optimal value, the shock wave released by the discharge breakdown of the shock wave electrode 31 can carry the maximum mechanical energy, that is, the shock wave released by the discharge breakdown of the shock wave electrode 31 has the maximum strength.

[0070] Therefore, the shock wave generation method further comprises adjusting the value of the energy relay capacitor C2 to change the pulse width of the pulse current:

[0071] When the value of the energy relay capacitor C2 decreases, the pulse width of the generated pulse current is shortened;

[0072] When the value of the energy relay capacitor C2 increases, the pulse width of the generated pulse current is increased.

[0073] The equivalent capacitance in the text refers to the overall capacitance value exhibited by two or more capacitors when they are connected together in a circuit. In a series or parallel combination of capacitors, a single equivalent capacitance value can be obtained through a specific calculation method, which can represent the total energy storage effect of the entire capacitor combination. In practical applications, the concept of equivalent capacitance helps to simplify the analysis of complex circuits.

[0074] As shown in FIGS. 3-29, the high-voltage pulse power supply 10 in the embodiment of the present disclosure further comprises a rectifier diode D1 electrically connected between the voltage boosting module 11 and the energy storage capacitor C1, which is used to convert alternating current into direct current and limit the direction of current flow; and / or,

[0075] The high-voltage pulse power supply 10 further comprises a current-limiting resistor R3 electrically connected with the switching-type electrical component and used to adjust the current continuation of the switching-type component; and / or,

[0076] The switching-type electronic component is IGBT, GDT, SCR or MOSFET. If other controllable electronic switches suitable for the embodiments of the present application are used in the circuit of the embodiments of the present application, they still belong to the protection scope of the present application. In the process of releasing a large number of shock waves by the shock wave system, the switching-type component (for example, GDT, IGBT, SCR, MOSFET) is frequently turned on and turned off, which causes the boost module 11 to generate a lot of high-frequency noise (electromagnetic wave) when working. The high-frequency noise is radiated outward, which causes serious electromagnetic interference to the surrounding electronic equipment. The energy relay capacitor C2 is electrically connected with the boost module 11 and the switching-type electronic component, which can absorb the high-frequency signal components generated by the boost module 11 due to the turn-on and turn-off of the switching-type electronic component, greatly reduce the high-frequency noise radiated outward, and has the technical effects of reducing high-frequency noise and reducing electromagnetic interference.

[0077] As shown in FIGS. 3 to 29, the shock wave system in the embodiments of the present application further comprises a connecting assembly 20. Through the connecting assembly 20, the shock wave guide tube 30 is electrically connected with the high-voltage pulse power supply 10. In the figures, R1, R11, R12, R2, R21 and R22 are equivalent resistances of different connecting parts of the connecting assembly 20; and,

[0078] As shown in FIGS. 3 to 9, the energy relay capacitor C2 is arranged at the high-voltage pulse power supply 10 and is electrically connected with the power supply module and the switching-type component. The energy relay capacitor C2 is electrically connected with the shock wave electrode 31 through the connecting assembly 20; or,

[0079] As shown in FIGS. 10 to 24, the energy relay capacitor C2 is arranged at the connecting assembly 20. Through the connecting assembly 20, the energy relay capacitor C2 is electrically connected with the power supply module and the switching-type component. The energy relay capacitor C2 is electrically connected with the shock wave electrode 31 through the connecting assembly 20. In FIGS. 10 to 14, the C2 is arranged near the high-voltage pulse power supply 10. In FIGS. 15 to 19, the C2 is arranged at the middle part of the connecting assembly 20. In FIGS. 20 to 24, the C2 is arranged near the shock wave guide tube 30; or,

[0080] As shown in FIGS. 25 to 29, the energy relay capacitor C2 is arranged at the shock wave guide tube 30. Through the connecting assembly 20, the energy relay capacitor C2 and the shock wave electrode 31 electrically connected with each other are electrically connected with the power supply module and the switching-type component.

[0081] In the shock wave system, the high-voltage pulse power supply 10 needs to be connected with the shock wave electrode 31 through its own lead, the connecting assembly 20 (usually a connecting cable, and the resistances of the connecting assembly 20 are R1 and R2 respectively) and the lead in the shock wave guide tube 30. The parasitic impedance of the connecting assembly 20 and the lead in the shock wave guide tube 30 weakens the current in the circuit, especially the pulse current generated when the shock wave is released, thereby reducing the shock wave energy. Therefore, the shorter the connecting assembly 20 and the lead in the shock wave guide tube 30 between the energy relay capacitor C2 and the shock wave electrode 31, the smaller the parasitic resistance, the smaller the weakening effect of the parasitic resistance on the pulse current generated when the shock wave is released, the greater the mechanical energy carried by the shock wave released by the shock wave electrode 31 when the discharge is broken down, and the greater the treatment effect of the shock wave.

[0082] The movement of the position of the energy relay capacitor C2 mainly improves the energy utilization rate, thereby improving the shock wave energy. The principle is to transfer the influence of the loop impedance from the discharge period of the energy relay capacitor C2 to the charging period. The generation of the shock wave is mainly in the discharge period, and the increase of the impedance in the charging period does not affect the final energy release (only the charging time is slightly prolonged), while the impedance in the discharge period directly affects the discharge current. The size of the discharge current will directly affect the shock wave energy release. The smaller the discharge loop impedance, the larger the discharge current. Therefore, this transfer can effectively improve the shock wave energy.

[0083] Therefore, the shock wave generation method of the present application further includes the following steps: adjusting the position of the energy relay capacitor C2 to make the energy relay capacitor C2 close to the shock wave electrode 31, so that the present application can generate a shock wave with greater energy, further improving the treatment effect of the shock wave.

[0084] The shock wave system further comprises a voltage limiting type protection component, which is electrically connected with the energy relay capacitor C2 and the shock wave electrode 31. The voltage limiting type protection component is in an open state when the voltage between the two ends does not reach the breakdown voltage, and is in a conductive state when the voltage between the two ends reaches the breakdown voltage. As shown in FIGS. 4-9, 10-14, 16-19, 21-24 and 26-29, the shock wave electrode 31 is further electrically connected with the voltage limiting type protection component, that is, one end or the other end of the shock wave electrode 31 is electrically connected with one end or the other end of the voltage limiting type protection component. The shock wave electrode 31 and the voltage limiting type protection component electrically connected with each other, one end of which is electrically connected with one end of the energy relay capacitor C2, and the other end of which is electrically connected with the other end of the energy relay capacitor C2. At this time, the voltage between the two ends of the energy relay capacitor C2 is almost equal to the sum of the voltage between the two ends of the shock wave electrode 31 and the voltage between the two ends of the voltage limiting type protection component.

[0085] Preferably, the voltage limiting type protection component is a gas discharge tube or a pressure sensitive resistor.

[0086] "Voltage Dependent Resistor" (VDR) or "Varistor" is a non-linear voltage and current device used to protect sensitive components from overvoltage by clamping the voltage and absorbing excess current.

[0087] When the energy relay capacitor C2 is placed at the high voltage pulse power supply 10:

[0088] As shown in Figures 4 and 5, the gas discharge tube GDT1 (hereinafter referred to as GDT1) is placed at the high voltage pulse power supply 10, and the GDT1 is electrically connected to any position between the energy relay capacitor C2 and the connecting assembly 20;

[0089] As shown in Figures 6 and 7, the GDT1 is placed at the connecting assembly 20 and is electrically connected to any position of the connecting assembly 20;

[0090] As shown in Figures 8 and 9, the GDT1 is placed at the shock wave guide tube 30 and is electrically connected to any position between the connecting assembly 20 and the shock wave electrode 31.

[0091] When the energy relay capacitor C2 is placed at the connecting assembly 20 and adjacent to the high voltage pulse power supply 10:

[0092] As shown in Figures 11 and 12, the GDT1 is placed at the connecting assembly 20 and is electrically connected to any position on the connecting assembly 20, which can be placed adjacent to the energy relay capacitor C2 as shown in the figures, or adjacent to the shock wave guide tube 30 as not shown in the figures;

[0093] As shown in Figures 13 and 14, the GDT1 is placed at the shock wave guide tube 31 and is electrically connected to any position between the connecting assembly 20 and the shock wave electrode 31.

[0094] When the energy relay capacitor C2 is placed at the middle of the connecting assembly 20:

[0095] As shown in Figures 16 and 17, the GDT1 is placed at the connecting assembly 20 and is electrically connected to any position between the energy relay capacitor C2 and the shock wave guide tube 30;

[0096] As shown in Figures 18 and 19, the GDT1 is placed at the shock wave guide tube 31 and is electrically connected to any position between the connecting assembly 20 and the shock wave electrode 31.

[0097] When the energy relay capacitor C2 is placed at the connecting assembly 20 and adjacent to the shock wave guide tube 30:

[0098] As shown in Figs. 21 and 22, the GDT 1 is arranged at the connecting assembly 20 and electrically connected to any position between the energy relay capacitor C2 and the shock wave guide tube 30;

[0099] As shown in Figs. 23 and 24, the GDT 1 is arranged at the shock wave guide tube 30 and electrically connected to any position between the connecting assembly 20 and the shock wave electrode 31.

[0100] When the energy relay capacitor C2 is arranged at the shock wave guide tube 30:

[0101] As shown in Figs. 26 to 27, the GDT 1 is arranged at the shock wave guide tube 30 and electrically connected to any position between the connecting assembly 20 and the shock wave electrode 31.

[0102] All the GDT 1 can be replaced by a voltage-dependent resistor, as shown in Fig. 28, i.e. replacing the GDT 1 in Fig. 26 by a voltage-dependent resistor VDR 1. All the switching electronic components IGBT 1 can also be replaced by other available switching electronic components, as shown in Fig. 29, i.e. replacing the IGBT 1 in Fig. 27 by an air discharge tube GDT 2, and the control module 12 is only used to control the opening and closing of the boost module 11.

[0103] The working process of the shock wave system of the present application is described below in three stages in combination with the accompanying drawings.

[0104] Taking Fig. 3 as an example, the boost module 11, the rectifier diode D1 and the energy storage capacitor C1 form an energy storage circuit, the energy relay capacitor C2, the current-limiting resistor R3 and the switching electronic component IGBT 1 constitute a charging circuit, the charging circuit is electrically connected to both ends of the energy storage capacitor C1, the circuit in which the shock wave electrode 31 and the connecting assembly 20 are located is a discharge circuit, and the discharge circuit is electrically connected to both ends of the C2. In the initial state, the IGBT 1 and the boost module 11 are both in the off state.

[0105] The first stage is the energy storage stage, in which the energy storage capacitor stores energy. The control module 12 controls the boost module 11 to be turned on, and through the energy storage circuit, the boost module 11 charges the energy storage capacitor C1, and the voltage across the energy storage capacitor C1 continuously rises to realize the energy storage of the energy storage capacitor C1. Since the IGBT 1 is in the off state, the voltages across the charging circuit and the discharge circuit are equal to the voltage across the energy storage capacitor C1 and no current flows through them.

[0106] The second stage: charging stage, the energy relay capacitor and the shock wave electrode are charged. When the voltage across the energy storage capacitor C1 reaches the set value, the voltage across the charging circuit and the discharging circuit also reaches the set value; the control module 12 controls the boost module 11 to be disconnected, and the boost module 11 stops charging the energy storage capacitor C1; at the same time, the control module 12 controls the IGBT1 to be turned on, and the current is formed in the charging circuit and the discharging circuit, and the energy storage capacitor C1 starts to charge the energy relay capacitor C2 and the shock wave electrode 31.

[0107] The third stage: release stage, the shock wave electrode is pre-breakdown and releases the shock wave. The energy storage capacitor C1 continues to charge the energy relay capacitor C2 and the shock wave electrode 31, and the voltage across the shock wave electrode 31 continues to rise until the voltage across the shock wave electrode 31 approaches its breakdown voltage, at which time the shock wave electrode 31 enters a pre-breakdown state, at which time the shock wave electrode 31 starts to ablate and consume electrical energy; until the voltage across the shock wave electrode 31 reaches its breakdown voltage, the shock wave electrode 31 discharges and breaks down to release the shock wave, and the shock wave electrode 31 is equivalent to an inductor, and the energy storage capacitor C1 continues to discharge to the shock wave electrode 31 in the direction of the outer arrow shown in the figure, at the same time, the energy relay capacitor C2 stops charging and starts to discharge to the shock wave electrode 31 in the direction of the inner arrow shown in the figure, and a pulse current with a high peak value is formed on the discharging circuit to make the shock wave electrode 31 release a shock wave carrying a large mechanical energy and a large amount of heat. At the same time, the voltage in the charging circuit and the discharging circuit decreases rapidly, the IGBT1 is disconnected, and the whole shock wave system returns to the initial state.

[0108] In the pre-breakdown stage, the more electrical energy the energy relay capacitor C2 takes away from the energy storage capacitor C1, that is, the greater the current flowing through the energy relay capacitor C2, the less electrical energy the shock wave electrode 31 takes away from the energy storage capacitor C1, that is, the smaller the current flowing through the shock wave electrode 31, the less the electrode ablation and electrical energy consumption of the shock wave electrode 31, and the longer the service life of the shock wave electrode 31. As shown in the different embodiments of FIGS. 3, 10, 15, 20 and 25, in the release stage of the shock wave, C1 discharges through the loop formed by C1, the connecting assembly 20, the shock wave electrode 31 and the IGBT, C2 discharges through the loop formed by C2, the connecting assembly 20 and the shock wave electrode 31, and there is no impedance of the IGBT in the discharge loop of C2, and the shock wave energy depends on the electrical energy released by C1 and C2 to the shock wave electrode 31, and no longer depends on the electrical energy accumulated on the shock wave electrode 31. Therefore, the shock wave system of the present application can release a shock wave carrying a large mechanical energy, thereby having a strong treatment effect.

[0109] In addition, the positive electrode of the shock wave electrode 31 and the negative electrode of the shock wave electrode 31 are in communication with the voltage boosting module 11, and the shock wave electrode 31 enters the pre-breakdown stage. The electrons accumulate at the negative electrode of the shock wave electrode 31 until the potential of the positive electrode of the shock wave electrode 31 approaches the critical value of the discharge breakdown. The electrons continue to accumulate at the negative electrode of the shock wave electrode 31, the potential of the positive electrode of the shock wave electrode 31 reaches the critical value of the discharge breakdown, and the shock wave electrode 31 enters the discharge breakdown stage. During the discharge breakdown, the electrons move from the negative electrode of the shock wave electrode 31 to the positive electrode of the shock wave electrode 31 to generate an arc. In order to increase the shock wave energy released by the shock wave formed by the discharge breakdown of the shock wave electrode 31, the structure of the shock wave electrode 31 is usually that the exposed area of the negative electrode is larger than that of the positive electrode, so as to facilitate the accumulation of electrons at the negative electrode of the shock wave electrode 31. On the contrary, if the structure of the shock wave electrode 31 is that the exposed area of the positive electrode is larger than that of the negative electrode, it is not conducive to the accumulation of electrons at the negative electrode of the shock wave electrode 31, and a higher energy shock wave cannot be generated during discharge. Due to the introduction of the energy relay capacitor C2, the accumulation of electrons is realized by the energy relay capacitor C2, and the accumulation effect of electrons on the shock wave electrode 31 is much smaller than that of the energy relay capacitor C2, thereby weakening the influence of the polarity of the shock wave electrode 31.

[0110] The present disclosure has at least the following beneficial effects:

[0111] 1) Reducing the current flowing through the shock wave electrode 31 in the pre-breakdown stage, thereby reducing the energy consumption and electrode ablation in the pre-breakdown stage, and prolonging the service life of the shock wave electrode 31;

[0112] 2) Increasing the energy released by the shock wave electrode 31 in the release shock wave stage, thereby greatly improving the mechanical energy carried by the shock wave and improving the treatment effect of the shock wave;

[0113] 3) The mechanical energy carried by the shock wave depends on the electric energy released by the energy storage capacitor C1 and the energy relay capacitor C2 to the shock wave electrode 31, and is no longer dependent on the accumulated electric energy on the shock wave electrode 31, so that the mechanical energy carried by the shock wave is no longer limited by the structural design of the shock wave electrode 31, and at the same time, the influence of the polarity of the shock wave electrode 31 on the mechanical energy carried by the shock wave is weakened;

[0114] 4) Reducing the influence of parasitic impedance on the pulse current when the shock wave is released, and the closer the distance between the energy relay capacitor C2 and the shock wave electrode 31, the smaller the influence of the parasitic impedance;

[0115] 5) The energy relay capacitor C2 can absorb the high-frequency signal components generated by the boost module 11 due to the turn-on and turn-off of the switching electronic components, greatly reducing the high-frequency noise radiated outward, having the technical effects of reducing high-frequency noise and reducing electromagnetic interference.

[0116] The above is only a specific embodiment of the present disclosure, which cannot limit the scope of the invention. Therefore, the replacement of equivalent components or equivalent changes and modifications made within the scope of the patent protection of the present disclosure should still belong to the scope covered by the present patent. In addition, the technical features in the present disclosure can be freely combined with each other, between technical features, between technical features and technical solutions, and between technical solutions.

Claims

1. A shock wave generation method characterized by, The method comprises the following steps: The boost module charges the energy storage capacitor; When the voltage of the energy storage capacitor reaches a set value, the boost module stops charging the energy storage capacitor, and the energy storage capacitor charges the energy relay capacitor and the shock wave electrode; When the voltage across the shock wave electrode reaches the breakdown voltage of the shock wave electrode, the energy relay capacitor stops charging and discharges to the shock wave electrode, the energy storage capacitor continues to discharge to the shock wave electrode, and the shock wave electrode discharges to break down and release a shock wave.

2. The shock wave generation method according to claim 1, characterized by, The method further comprises the following steps: When the voltage of the energy relay capacitor reaches at least the breakdown voltage of the shock wave electrode, the voltage across the shock wave electrode reaches the breakdown voltage of the shock wave electrode; Or, When the voltage of the energy relay capacitor reaches at least the sum of the breakdown voltage of the shock wave electrode and the breakdown voltage of the voltage-limiting protection component, the voltage across the shock wave electrode reaches the breakdown voltage of the shock wave electrode.

3. A shock wave system for carrying out the shock wave generation method according to any one of claims 1 to 2, characterized by, The shock wave system comprises a high-voltage pulse power supply, a shock wave guide tube, and an energy relay capacitor; the high-voltage pulse power supply comprises a power module and a switching electronic component, and the power module comprises a boost module and an energy storage capacitor which are electrically connected to each other; the shock wave guide tube comprises a shock wave electrode, and the power module, the shock wave electrode, and the switching electronic component are electrically connected; one end of the energy relay capacitor is electrically connected to one end of the shock wave electrode, and the other end of the energy relay capacitor is electrically connected to the other end of the shock wave electrode.

4. The shockwave system of claim 3, wherein, The capacitance value of the energy relay capacitor is greater than or equal to the equivalent capacitance value of the shock wave electrode and less than the capacitance value of the energy storage capacitor.

5. The shockwave system of claim 4, wherein, The capacitance value of the energy relay capacitor is an optimal value, and when the capacitance value of the energy relay capacitor is the optimal value, the shock wave released by the discharge of the shock wave electrode has the maximum strength.

6. The shockwave system of claim 3, wherein, The high-voltage pulse power supply further comprises a rectifier diode electrically connected between the boost module and the energy storage capacitor; and / or, The high-voltage pulse power supply further comprises a current-limiting resistor electrically connected to the switching electronic component; and / or, The switching electronic component is an IGBT, a GDT, an SCR, or a MOSFET.

7. The shockwave system of claim 3, wherein, The shock wave system further comprises a connecting assembly, through which the shock wave guide tube and the high-voltage pulse power supply are electrically connected; And, The energy relay capacitor is arranged at the high-voltage pulse power supply and is electrically connected to the power module and the switching component, and the energy relay capacitor is electrically connected to the shock wave electrode through the connecting assembly; Or, The energy relay capacitor is arranged at the connecting assembly; through the connecting assembly, the energy relay capacitor is electrically connected to the power module and the switching component, and the energy relay capacitor is electrically connected to the shock wave electrode through the connecting assembly; Or, The energy relay capacitor is arranged at the shock wave guide tube; through the connecting assembly, the energy relay capacitor and the shock wave electrode which are electrically connected to each other are electrically connected to the power module and the switching component.

8. The shockwave system of claim 7, wherein, The connecting assembly is a connecting cable.

9. The shockwave system of any one of claims 3 to 8, wherein, The shock wave system further comprises a voltage-limiting protection component which is electrically connected to the energy relay capacitor and the shock wave electrode; wherein the voltage-limiting protection component is in an open state when the voltage across the voltage-limiting protection component does not reach the breakdown voltage, and the voltage-limiting protection component is in a conductive state when the voltage across the voltage-limiting protection component reaches the breakdown voltage.

10. The shockwave system of claim 9, wherein, The voltage limiting protection component is a gas discharge tube or a voltage-dependent resistor.

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