CN117838520A - Electrical isolation system for shock wave device and shock wave device - Google Patents

Abstract

The application discloses an electric isolation system for a shock wave device and the shock wave device, comprising a signal trigger circuit, a first rectifying circuit, a high-frequency conversion circuit and a discharge circuit which are sequentially connected in series; the input end of the first rectifying circuit is connected with a power supply and is used for converting alternating current into direct current and transmitting the direct current to the high-frequency converting circuit; the high-frequency conversion circuit comprises a high-frequency conversion module and a first isolation module; the high-frequency conversion module is used for converting the direct current into high-frequency current and transmitting the high-frequency current to the discharge circuit; the high-frequency conversion module comprises a plurality of high-frequency conversion units, the first isolation module comprises N first isolation units, and the high-frequency conversion units are connected with the first controller through the first isolation units; the output end of the discharging circuit is connected with the shock wave generator. The scheme provided by the application can greatly improve the dielectric strength of the electrical isolation system, reduce the leakage current on the surface of the shock wave generator and ensure the safety performance of the shock wave generator.

Description

Electrical isolation system for shock wave device and shock wave device

Technical Field

The present application relates to the technical field of medical devices, and in particular, to an electrical isolation system for a shock wave device and a shock wave device.

Background

The shock wave device can be used for treating heart valves and/or vascular calcification, the shock wave device for treating heart valves and/or vascular calcification is an active medical instrument directly applied to the heart, the working voltage of the active medical instrument is as high as 10KV, the electrical safety is classified into a CF type, namely, the allowable patient leakage current in a normal state is not more than 0.01 mA, the working voltage of the shock wave device applied to the heart or the blood vessel in the prior art is far less than 10KV, the shock wave release frequency is also lower, and the working voltage of the traditional extracorporeal lithotripter is higher, but the corresponding electrical safety is classified into a BF type, and the allowable patient leakage current in the normal state is not more than 0.1 mA.

Accordingly, there is a need for an improved electrical isolation system to ensure that shock wave devices operating at voltages up to 10KV and above, and that patient leakage current allowed under normal conditions meets CF-type safety performance standards.

Disclosure of Invention

In order to solve the problems in the prior art, embodiments of the present application provide an electrical isolation system for a shock wave device and a technical solution for the shock wave device, where the technical solution is as follows:

in one aspect, the present application provides an electrical isolation system for a shock wave device, comprising: the signal trigger circuit is connected with the first rectifying circuit, the high-frequency conversion circuit and the discharge circuit in series in sequence;

the input end of the first rectifying circuit is connected with a power supply and is used for converting alternating current into direct current and transmitting the direct current to the high-frequency converting circuit;

the high-frequency conversion circuit comprises a high-frequency conversion module and a first isolation module; the high-frequency conversion module is used for converting the direct current into high-frequency current and transmitting the high-frequency current to the discharge circuit; the high-frequency conversion module comprises a plurality of high-frequency conversion units, the first isolation module comprises N first isolation units, and the high-frequency conversion units are connected with a first controller through the first isolation units; wherein N is an even number greater than 2;

the output end of the discharging circuit is connected with the shock wave generator;

the output end of the signal trigger circuit is connected with the discharge circuit, and the signal trigger circuit is used for controlling the discharge circuit to charge the shock wave generator.

Further, one of the first isolation units is connected to at least one of the high frequency conversion units, and preferably one of the first isolation units is connected to one of the high frequency conversion units.

Further, the first isolation module comprises N independent power supplies;

the N independent power supplies are connected with the N first isolation units in a one-to-one correspondence mode.

Further, the first isolation unit further comprises a first isolation subunit and a switch circuit;

the switching circuit is connected with the first controller through the first isolation subunit, the power supply connecting end of the switching circuit is connected with the independent power supply, the output end of the switching circuit is connected with the high-frequency conversion unit, and the switching circuit is used for controlling the high-frequency conversion unit to be conducted or disconnected based on a received control signal sent by the first controller.

Further, N is an even number greater than 2 and equal to or less than 12.

Further, N is 4, 6 or 8.

Further, the signal trigger circuit comprises an optocoupler and a pulse switch circuit;

the optical coupler is connected with the pulse switch circuit, the pulse switch circuit is connected with the discharge circuit, and the optical coupler is used for controlling the pulse switch circuit to be conducted based on a received preset trigger signal so that the discharge circuit can provide electric energy for the shock wave generator.

Further, the discharging circuit comprises a charging capacitor and a discharging control module;

the charging end of the charging capacitor is connected with the high-frequency conversion circuit, and the discharging end of the charging capacitor is connected with the shock wave generator through the discharging control module.

Further, the device also comprises a shock wave emitter, wherein the input end of the shock wave emitter is connected with the output end of the shock wave generator;

the plurality of electrodes in the shock wave emitter are connected with the discharge control module through the shock wave generator, and the discharge control module is used for controlling the shock wave emitter to generate shock waves.

In another aspect, the present application also provides a shock wave device comprising the above electrical isolation system for generating a shock wave, a shock wave generator and a shock wave emitter.

The application provides an electric isolation system for a shock wave device and the shock wave device, has following technical effect:

according to the embodiment of the application, the signal trigger circuit, the first rectifying circuit, the high-frequency conversion circuit and the discharging circuit are sequentially connected in series, so that the charging process of the shock wave generator is realized, and specifically, the input end of the first rectifying circuit is connected with a power supply and is used for converting alternating current into direct current and conveying the direct current to the high-frequency conversion circuit; the high-frequency conversion circuit comprises a high-frequency conversion module and a first isolation module; the high-frequency conversion module is used for converting the direct current into high-frequency current and transmitting the high-frequency current to the discharge circuit; the high-frequency conversion module comprises a plurality of high-frequency conversion units, the first isolation module comprises N first isolation units, and the high-frequency conversion units are connected with the first controller through the first isolation units; n is an even number greater than 2; the output end of the discharging circuit is connected with the shock wave generator. By utilizing the technical scheme provided by the application, the dielectric strength of the electrical isolation system can be greatly improved, the leakage current on the surface of the shock wave generator is reduced, and the safety performance of the shock wave generator is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an electrical isolation system for a shock wave device according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a high-frequency conversion circuit according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a discharge control module according to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of a shock wave emitter according to an embodiment of the present disclosure;

wherein, the reference numerals correspond to: 100-power supply; 200-a first rectifying circuit; 300-high frequency conversion circuit; 310-a high frequency conversion module; 311-high frequency conversion unit; 320-a first isolation module; 321-a first isolation unit; 322-independent power supply; 323-a first isolator subunit; 324-a switching circuit; 400-a discharge circuit; 410-charging a capacitor; 420-a discharge control module; 421-discharge control unit; 4210-a signal isolation circuit; 4211 an electrical isolation circuit; 4212-a high voltage isolation circuit; 500-signal trigger circuit; 510-optocouplers; 520-pulse switching circuit; 530-a second rectifying circuit; 540-a second voltage transformation device; 560-thyristors; 600-a shock wave generator; 700-a first voltage transformation device; 701-isolating transformer device; 801-a first controller; 802-a second controller; 900-shock wave emitter; 910-electrode.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or otherwise described herein.

Referring to fig. 1, a schematic structural diagram of an electrical isolation system for a shock wave device according to an embodiment of the present application is shown, and a technical solution of the present application is described in detail below with reference to fig. 1.

The embodiment of the application provides an electrical isolation system for a shock wave device, which specifically comprises a signal trigger circuit 500, a first rectifying circuit 200, a high-frequency conversion circuit 300 and a discharging circuit 400 which are sequentially connected in series.

The input end of the first rectifying circuit 200 is connected to the power supply 100, and is used for converting alternating current into direct current and delivering the direct current to the high-frequency converting circuit 300; the high frequency conversion circuit 300 includes a high frequency conversion module 310 and a first isolation module 320; the high-frequency conversion module 310 is used for converting direct current into high-frequency current and delivering the high-frequency current to the discharge circuit 400; the high-frequency conversion module 310 includes a plurality of high-frequency conversion units 311, the first isolation module 320 includes N first isolation units 321, and the high-frequency conversion units 311 are connected to the first controller 801 through the first isolation units 321; wherein, the first controller 801 is a PWM controller, N is an even number greater than zero; the output end of the discharging circuit 400 is connected to the shock wave generator 600, the output end of the signal trigger circuit 500 is connected to the discharging circuit 400, and the signal trigger circuit 500 is used for controlling the discharging circuit 400 to charge the shock wave generator 600, and it should be noted that the frequency of the high-frequency current is 20 kHz-100 kHz.

In this embodiment of the present application, by setting the first rectifying circuit, the high-frequency converting circuit, and the discharging circuit sequentially connected in series, the electric energy is provided to the shock wave generator, so that the shock wave generator releases the shock wave according to the preset high frequency, and the leakage current of the shock wave generator 600 in the high-frequency power supply process can be ensured to be within the safe range, and the dielectric strength of the electrical isolation system is greatly improved, wherein the discharging circuit 400 is used for charging the shock wave generator 600.

In one embodiment, the input of the first rectifying circuit 200 is an ac current of 110V-440V, preferably 150V-300V, and illustratively 170V, 200V or 220V, and the first rectifying circuit 200 converts the ac current into a dc current for charging the discharge circuit 400.

The direct current output by the first rectifying circuit 200 is up-converted by the high-frequency converting circuit 300 to realize high-frequency charging of the shock wave generator 600 with higher operating voltage, and the normal operating voltage of the shock wave generator 600 may be 10KV or more, so that the shock wave generator 600 needs to be charged by the high-frequency current to ensure the normal operation of the shock wave generator 600.

Specifically, before the discharging circuit 400 charges the shock wave generator 600, the discharging circuit 400 needs to be charged, in the process of charging the discharging circuit 400, the high-frequency conversion unit 311 is connected with the first controller 801 through the first isolation unit 321, so that the first controller 801 controls the on-off of the high-frequency conversion unit 311 through the first isolation unit 321 so as to change the charging frequency of the discharging circuit 400, and further improve the charging speed of the discharging circuit 400, and simultaneously, the N first isolation units 321 are adopted to control the high-frequency conversion module 310, so that the leakage current of the surface of the shock wave generator 600 with the working voltage greater than or equal to 10KV is reduced, the shock wave generator 600 can be directly applied to the heart, the dielectric strength of an electrical isolation system is greatly improved, the safety of the whole electrical isolation system under the high working voltage is ensured, and the shock wave generator 600 is ensured not to cause any influence on a human body.

It should be noted that, the high-frequency conversion unit 311 has a good insulation effect, so that the interference between the high-frequency conversion circuit 300 and the discharge circuit 400 can be effectively avoided, thereby reducing the leakage current of the electrical isolation system.

In practical applications, the signal trigger circuit 500 may receive a preset trigger signal output by the first controller 801, where, when the signal trigger circuit 500 receives the preset trigger signal, the signal trigger circuit 500 generates a charging signal and transmits the charging signal to the discharge circuit 400, so that the discharge circuit 400 is turned on, and the discharge circuit 400 provides energy to the shock wave generator 600.

When the discharging circuit 400 receives the charging signal, the discharging circuit 400 is turned on to the shock wave generator 600, and the discharging circuit 400 starts to charge the shock wave generator 600.

In an alternative embodiment, the electrical isolation system may further comprise a first transformer 700, the high frequency conversion circuit 300 being connected to the discharge circuit 400 via the first transformer 700, the first transformer 700 being adapted to boost the high frequency current to ensure the supply of the discharge circuit 400.

In the embodiment of the application, by setting the first rectifying circuit 200, the high-frequency converting circuit 300 and the discharging circuit 400, the charging speed of the discharging circuit 400 is improved, and meanwhile, the leakage current of the shock wave generator 600 in the normal working state is controlled to be 0.002 milliamp-0.006 milliamp, and the dielectric strength of the electrical isolation system reaches 15KV, so that the safety performance requirement allowed by the shock wave generator 600 with the electrical safety classified as CF is met.

In an alternative embodiment, a first isolation unit 321 is connected to at least one high frequency conversion unit 311, preferably a first isolation unit 321 is connected to one high frequency conversion unit 311.

In this embodiment of the present application, the first controller 801 may make at least one high-frequency conversion unit 311 in an on or off state through one first isolation unit 321, and one high-frequency conversion unit 311 in an on state converts a current into a high-frequency current, or a plurality of high-frequency conversion units 311 in an on state cooperatively convert a direct current into a high-frequency current, and as illustrated in fig. 2, the first controller 801 may make the one high-frequency conversion unit 311 in an on or off state through one first isolation unit 321.

In practical applications, the first controller 801 controls the discharge circuit 400 to be charged at a desired charging frequency, specifically, the first controller 801 controls at least one of the high-frequency conversion units 311 in the high-frequency conversion circuit 300 to be in a conductive state, thereby controlling the charging frequency of the high-frequency conversion circuit 300. The number of turned-on high-frequency conversion units 311 is proportional to the highest charging frequency that can be achieved, that is, the more the high-frequency conversion units 311 are turned on, the higher the highest charging frequency that charges the discharging circuit 400, and for example, when the number of turned-on high-frequency conversion units 311 is 4, the charging frequency may reach 30KHz, and when the number of turned-on high-frequency conversion units 311 is 6, the charging frequency may reach 50KHz, and so on. In one embodiment, the number of turned-on high-frequency converting units 311 may be controlled to be 4, 6 or 8, which is not particularly limited herein.

In an alternative embodiment, N is an even number greater than 2 and less than or equal to 12, preferably N is 4, 6 or 8. Specifically, the number of the first isolation units 321 is set to be an even number greater than 2 and less than or equal to 12, which is used for ensuring that the first isolation units 321 can effectively control the high-frequency conversion units 311 and preventing one path of the first isolation units 321 from malfunctioning to affect the overall charging efficiency; on the other hand, the discharge circuit 400 is charged at a high frequency, so that the discharge circuit 400 supplies electric energy to the shock wave generator 600, thereby ensuring the normal operation of the shock wave generator 600 and realizing the high frequency charging. Meanwhile, by setting the number of the N first isolation units 321, and the N first isolation units 321 are all independently powered by the independent power supply 322, so that the leakage current of the whole electrical isolation system is ensured to be within a safety range, preferably, the number of the first isolation units 321 can be 4, 6 or 8, in practical application, as shown in fig. 1, the number of the first isolation units 321 can be set to be 4, and when the number of the first isolation units 321 is set to be 4, the frequency of the shock wave generated by the shock wave generator 600 can be adjusted, and the leakage current of the whole electrical isolation system can be ensured to be within the safety range, namely, the leakage current of the shock wave generator 600 in a normal working state is controlled to be within 0.002-0.006 milliamp, so that the dielectric strength of the whole electrical isolation system can reach 15KV.

In a specific implementation, the N first isolation units 321 are divided into multiple groups, each group of first isolation units 321 is connected with the first controller 801 so as to receive a control signal sent by the first controller 801, and meanwhile, the first isolation units 321 are prevented from being affected, so that the leakage current of the electrical isolation system is improved, and it is noted that each group includes at least two first isolation units 321 to realize the cyclic control of the first isolation units 321 and the high-frequency conversion module 310 to be in a conducting state, so as to realize the high-frequency charging of the discharge circuit 400, and further improve the charging speed of the discharge circuit 400.

In an alternative embodiment, the first isolation module 320 includes N independent power sources 322, where the N independent power sources 322 are connected to the N first isolation units 321 in a one-to-one correspondence.

In this embodiment of the present application, the independent power supply 322 may be a DC-DC power supply, where the independent power supply 322 is relatively independent from the power supply 100, and each first isolation unit 321 is powered by the independent power supply 322, so that the leakage current released by the first isolation module 320 can be effectively reduced by independently powering N first isolation units 321 and setting the independent power supply 322 and the power supply 100 to be relatively independent, so as to ensure effective control over the high frequency conversion unit 311.

In one embodiment, the independent power source 322 and the first isolation unit 321 may be in an off or on state, and the first controller 801 controls the independent power source 322 and the first isolation unit 321 to be in an on or off state, so that the high-frequency conversion unit 311 connected to the first isolation unit 321 is in an on state.

In another embodiment, the independent power supply 322 is always in a conductive state with the first isolation unit 321, the first isolation unit 321 is in a disconnected state or a conductive state, and the first isolation unit 321 makes the switch circuit 324 in the first isolation unit 321 in a conductive or a disconnected state based on a received control signal sent by the first controller 801, so that the high-frequency conversion unit 311 connected to the first isolation unit 321 is in a conductive or a disconnected state.

In an alternative embodiment, the first isolation unit 321 further comprises a first isolation subunit 323 and a switching circuit 324.

The switch circuit 324 is connected to the first controller 801 through the first isolation subunit 323, a power connection end of the switch circuit 324 is connected to the independent power supply 322, an output end of the switch circuit 324 is connected to the high-frequency conversion unit 311, and the switch circuit 324 is configured to control the high-frequency conversion unit 311 to be turned on or off based on a control signal sent by the received first controller 801.

In this embodiment of the present application, the first isolation subunit 323 is configured to isolate the first controller 801 from the switch circuit 324, so as to further enhance the isolation between the first controller 801 and the switch circuit 324, effectively reduce the leakage current in the electrical isolation system, and when the switch circuit 324 receives the control signal sent by the first controller 801, control the high-frequency conversion unit 311 to be turned on or off, where the control signal may be a control signal indicating that the switch circuit 324 in the first isolation unit 321 is turned on, and may also be a control signal indicating that the switch circuit 324 in the first isolation unit 321 is turned off, and through different control signals, control the connection relationship between the switch circuit 324 and the independent power supply 322 and/or between the functional output end of the switch circuit 324 and the high-frequency conversion unit 311, thereby converting the direct current into the high-frequency current, so as to implement high-frequency charging of the discharge circuit 400.

In an embodiment, the first rectifying circuit 200 and the second rectifying circuit 530 are separately powered to avoid interference between the first rectifying circuit 200 and the second rectifying circuit 530, so as to affect the safety of the whole electrical isolation system, specifically, the first rectifying circuit 200 is used for converting ac current into dc current, further raising the frequency and the voltage of the dc current so as to charge the discharging circuit 400, in the process of charging the discharging circuit 400, in a high-frequency and high-voltage state, more interference signals are easily generated, and since the electrode in the far-end shock wave generator 600 is located in the balloon, the balloon is filled with physiological saline, and the balloon itself has no insulating capability, so that the isolation transformer 701 is powered in two ways to reduce the leakage current when the shock wave generator 600 releases shock waves, and in the case that the isolation transformer 701 is not used, the leakage current when the shock wave generator 600 releases shock waves, which is measured by the isolation transformer, is about 30 to 50 μa, can be reduced to 3 to 6 μa after the isolation of the isolation transformer 701, so that the safety performance of the shock wave generator 600 is remarkably reduced when the shock wave generator 600 releases shock waves.

The preset trigger signal received by the signal trigger circuit 500 may be a pulse signal, and when the preset trigger signal is a pulse signal, the requirement on precision is high and is easy to be interfered, so that the isolation needs to be performed through the isolation transformer 701, so as to further improve the dielectric strength of the electrical isolation system, further reduce the leakage current on the surface of the shock wave generator 600, and ensure the safety performance of the shock wave generator 600.

In an alternative embodiment, signal triggering circuit 500 includes optocoupler 510 and pulse switching circuit 520.

The optocoupler 510 is connected to the pulse switch circuit 520, the pulse switch circuit 520 is connected to the discharge circuit 400, and the optocoupler 510 is used for controlling the pulse switch circuit 520 to be turned on based on the received preset trigger signal, so that the discharge circuit 400 provides the electric energy to the shock wave generator 600.

Specifically, the pulse switch circuit 520 is connected to the discharge circuit 400, and when the pulse switch circuit 520 is turned on, the discharge circuit 400 is turned on with the shock wave generator 600, so that the discharge circuit 400 provides the shock wave generator 600 with electric power.

In another embodiment, the signal triggering circuit 500 further includes a second rectifying circuit 530, a thyristor 560, and a second transformer 540, wherein the optocoupler 510 is connected to the power source 100 through the second rectifying circuit 530, and the optocoupler 510 is sequentially connected to the thyristor 560, the second transformer 540, and the pulse switch circuit 520.

In this embodiment, the second rectifying circuit 530 is configured to convert an ac current output by the power supply 100 into a dc circuit, so as to provide energy for the optocoupler 510, when the optocoupler 510 receives a preset trigger signal, the optocoupler 510 is turned on to make the thyristor 560 be in a conductive state, and then the second transformer 540 is driven to generate a charging signal, and the pulse switch circuit 520 is turned on when the pulse switch circuit 520 receives the charging signal, at this time, the discharging circuit 400 is connected to the shock wave generator 600, so that the discharging circuit 400 charges the shock wave generator 600.

In an alternative embodiment, discharge circuit 400 includes a charge capacitor 410 and a discharge control module 420; the charging end of the charging capacitor 410 is connected to the high frequency conversion circuit 300, and the discharging end of the charging capacitor 410 is connected to the shock wave generator 600 through the discharging control module 420.

In an alternative embodiment, the system further comprises a shock wave emitter 900, wherein an input end of the shock wave emitter 900 is connected with an output end of the shock wave generator 600, and a plurality of electrodes 910 in the shock wave emitter 900 are connected with the discharge control module 420 through the shock wave generator 600, wherein the discharge control module 420 is used for controlling the shock wave emitter 900 to generate shock waves.

Specifically, the discharge control module 420 is configured to control charging of the shock wave emitter 900 so that at least one electrode pair in the shock wave emitter 900 releases shock wave energy, where the electrode pair is formed by at least two electrodes 910, so as to form shock waves with different energy values, so that the release position and treatment mode of the shock waves can be accurately controlled, and different treatment modes are configured for different areas, so that the treatment effect is improved.

In an embodiment, as shown in fig. 3, which is a schematic structural diagram of a discharge control module provided in the embodiment of the present application, the discharge control module 420 includes at least two discharge control units 421, at least two discharge control units 421 are connected in parallel, and specifically, the discharge control units 421 include a signal isolation circuit 4210, an electrical isolation circuit 4211, and a high voltage isolation circuit 4212, where the signal isolation circuit 4210, the electrical isolation circuit 4211, and the high voltage isolation circuit 4212 are sequentially connected in series.

In this embodiment, the input end of the discharging control unit 421 is connected to the second controller 802, where the second controller 802 is an MCU controller, so as to receive a charging control signal sent by the second controller 802, and the discharging control unit 421 controls the shockwave transmitter 900 to generate shockwaves based on the charging control signal.

Specifically, the signal isolation circuit 4210 may include, but is not limited to, at least one of an optocoupler, a diode, a triode, and a low voltage relay, and by disposing the signal isolation circuit 4210 between the second controller 802 and the electrical isolation circuit 4211, the isolation between the second controller 802 and the electrical isolation circuit 4211 is implemented, so as to further reduce the leakage current of the whole electrical isolation system, and at the same time, improve the stability of the output signal of the second controller 802.

The electrical isolation circuit 4211 may include, but is not limited to, at least one of a diode, a high voltage relay, a thyristor, and a field effect transistor, and the electrical isolation circuit 4211 has an effect of enhancing isolation, and in particular, isolates the signal isolation circuit 4210 and the high voltage isolation circuit 4212 to further reduce leakage current of the whole electrical isolation system and improve stability of the whole electrical isolation system.

The high-voltage isolation circuit 4212 comprises a high-voltage relay, and since the output end of the high-voltage isolation circuit 4212 is connected with the shock wave generator 600, the high-voltage isolation circuit 4212 is used for isolating the shock wave generator 600 with the discharge voltage of more than 10KV from the charging capacitor 410, so that the interference of spike signals generated by the shock wave generator 600 during high-voltage operation on an electrical isolation system is reduced as much as possible, and the normal operation of the electrical isolation system is ensured.

It should be noted that the shock waves generated by the shock wave generator 600 may include, but are not limited to, applications in the treatment of heart valve calcification and applications in the treatment of intravascular calcification.

In practical applications, the discharge control module 420 may control the electrode 910 in the shock wave emitter 900 to release energy so as to release higher energy at a position closer to the lesion, so as to improve the treatment effect, for example, when the shock wave generated by the shock wave generator 600 is used to treat the calcification of the heart valve, the discharge control module 420 controls the electrode 910 at the position closest to the calcification to release the shock wave energy so as to release higher energy at a position closer to the calcification, so as to improve the treatment effect on the calcification of the heart valve; the discharge control module 420 may also control the discharge of a plurality of electrode pairs at different locations, for example, the shock wave generated by the shock wave emitter 900 may be applied to the treatment of calcification in a blood vessel, as shown in fig. 4, which is a schematic structural diagram of the shock wave generator provided in the embodiment of the present application, when the discharge control module 420 concentrates the energy to the target electrode pairs in the shock wave emitter 900 for discharge, the shock wave energy may be pre-expanded forward (in coronary and peripheral blood vessels, there may be an extreme stenosis, the balloon catheter cannot pass through the calcified area, and the discharge of the shock wave energy from the target electrode pairs in the shock wave emitter 900 may be treated when the catheter does not pass through the calcified lesion), and when the discharge control module 420 concentrates the energy to the target electrode pairs in the shock wave emitter 900 for discharge to treat the calcified area.

In an alternative embodiment, the input of signal triggering circuit 500 is coupled to power supply 100 such that power supply 100 provides power to signal triggering circuit 500. Specifically, the electrical isolation system further includes an isolation transformer 701, an input end of the isolation transformer 701 is connected to the power supply 100, an output end of the isolation transformer 701 is respectively connected to an input end of the first rectifying circuit 200 and an input end of the signal triggering circuit 500, the isolation transformer 701 is used for dividing an ac current output by the power supply 100 into two paths of outputs, and an output voltage of the power supply 100 may be 220V, and the ac current output by the power supply 100 may be converted into an ac current with a voltage range of 150V-240V and an ac current with a voltage range of 9V-24V through the isolation transformer 701, where the ac current with a voltage range of 150V-240V is used for providing energy to the first rectifying circuit 200, and the ac current with a voltage range of 9V-24V is used for providing energy to the signal triggering circuit 500, so as to ensure normal operation of the first rectifying circuit 200 and the signal triggering circuit 500.

As can be seen from the above technical solutions of the embodiments of the present application, in the embodiments of the present application, a charging process of a shock wave generator is implemented by arranging a first rectifying circuit, a high-frequency converting circuit, and a discharging circuit that are sequentially connected in series, specifically, an input end of the first rectifying circuit is connected with a power supply, and is used for converting an ac current into a dc current, and delivering the dc current to the high-frequency converting circuit; the high-frequency conversion circuit comprises a high-frequency conversion module and a first isolation module; the high-frequency conversion module is used for converting the direct current into high-frequency current and transmitting the high-frequency current to the discharge circuit; the high-frequency conversion module comprises a plurality of high-frequency conversion units, the first isolation module comprises N first isolation units, and the high-frequency conversion units are connected with the first controller through the first isolation units; n is an even number greater than 2; the output end of the discharging circuit is connected with the shock wave generator. By utilizing the technical scheme provided by the application, the dielectric strength of the electrical isolation system can be greatly improved, the leakage current on the surface of the shock wave generator is reduced, and the safety performance of the shock wave generator is ensured.

The embodiment of the application further provides a shock wave device, which includes the electrical isolation system for generating shock waves and the shock wave generator, so that the shock wave device in the embodiment of the application should have the technical effects of the electrical isolation system for generating shock waves, and the details are not repeated here.

While the invention has been described in terms of preferred embodiments, the invention is not limited to the embodiments described herein, but encompasses various changes and modifications that may be made without departing from the scope of the invention.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. An electrical isolation system for a shockwave device, comprising: the signal trigger circuit (500) is connected with the first rectifying circuit (200), the high-frequency conversion circuit (300) and the discharging circuit (400) in series in sequence;

the input end of the first rectifying circuit (200) is connected with a power supply (100) and is used for converting alternating current into direct current and transmitting the direct current to the high-frequency converting circuit (300);

the high frequency conversion circuit (300) comprises a high frequency conversion module (310) and a first isolation module (320); the high-frequency conversion module (310) is used for converting the direct current into high-frequency current and delivering the high-frequency current to the discharge circuit (400); the high-frequency conversion module (310) comprises a plurality of high-frequency conversion units (311), the first isolation module (320) comprises N first isolation units (321), and the high-frequency conversion units (311) are connected with a first controller (801) through the first isolation units (321); wherein N is an even number greater than 2;

the output end of the discharging circuit (400) is connected with the shock wave generator (600);

the output end of the signal trigger circuit (500) is connected with the discharge circuit (400), and the signal trigger circuit (500) is used for controlling the discharge circuit (400) to charge the shock wave generator (600).

2. Electrical isolation system according to claim 1, characterized in that one of the first isolation units (321) is connected to at least one of the high frequency conversion units (311), preferably one of the first isolation units (321) is connected to one of the high frequency conversion units (311).

3. The electrical isolation system of claim 2, wherein the first isolation module (320) comprises N independent power sources (322);

n independent power supplies (322) are connected with N first isolation units (321) in a one-to-one correspondence mode.

4. An electrical isolation system according to claim 3, wherein the first isolation unit (321) further comprises a first isolation subunit (323) and a switching circuit (324);

the switch circuit (324) is connected with the first controller (801) through the first isolation subunit (323), the power supply connecting end of the switch circuit (324) is connected with the independent power supply (322), the output end of the switch circuit (324) is connected with the high-frequency conversion unit (311), and the switch circuit (324) is used for controlling the on-off of the high-frequency conversion unit (311) based on a received control signal sent by the first controller (801).

5. The electrical isolation system of claim 1, wherein N is an even number greater than 2 and less than or equal to 12.

6. The electrical isolation system of claim 5, wherein N is 4, 6, or 8.

7. The electrical isolation system of claim 1, wherein the signal trigger circuit (500) comprises an optocoupler (510) and a pulse switching circuit (520);

the optocoupler (510) is connected with the pulse switch circuit (520), the pulse switch circuit (520) is connected with the discharge circuit (400), and the optocoupler (510) is used for controlling the pulse switch circuit (520) to be conducted based on a received preset trigger signal so that the discharge circuit (400) can supply electric energy to the shock wave generator (600).

8. The electrical isolation system of claim 1, wherein the discharge circuit (400) comprises a charge capacitor (410) and a discharge control module (420);

the charging end of the charging capacitor (410) is connected with the high-frequency conversion circuit (300), and the discharging end of the charging capacitor (410) is connected with the shock wave generator (600) through the discharging control module (420).

9. The electrical isolation system of claim 8, further comprising a shock wave emitter (900), an input of the shock wave emitter (900) being connected to an output of the shock wave generator (600);

a plurality of electrodes (910) in the shock wave emitter (900) are connected with the discharge control module (420) through the shock wave generator (600), and the discharge control module (420) is used for controlling the shock wave emitter (900) to generate shock waves.

10. A shock wave device comprising an electrical isolation system according to any of claims 1-9, a shock wave generator (600) and a shock wave emitter (900).