CN210444241U

CN210444241U - Pulse generating circuit and high-voltage electric pulse tumor therapeutic apparatus

Info

Publication number: CN210444241U
Application number: CN201921300967.6U
Authority: CN
Inventors: 赖燊
Original assignee: Shenzhen Niumai Technology Co ltd
Current assignee: Shenzhen Niumai Technology Co ltd
Priority date: 2019-08-06
Filing date: 2019-08-06
Publication date: 2020-05-01
Anticipated expiration: 2029-08-06

Abstract

The application relates to a pulse generation circuit and high-voltage electric pulse tumor therapeutic apparatus, pulse generation circuit is applied to high-voltage electric pulse tumor therapeutic apparatus, includes: a control circuit for generating and outputting a pulse signal; the pulse generator is used for processing the high-voltage electricity output by the charging circuit of the high-voltage electric pulse tumor therapeutic apparatus under the control of the pulse signal to obtain high-voltage pulse and transmitting the high-voltage pulse to the charging circuit of the high-voltage electric pulse tumor therapeutic apparatus; the surge protection circuit is connected with the pulse generator and used for suppressing the surge of the pulse generator, the surge generation circuit can suppress the surge in the high-voltage pulse generation process, absorb transient overvoltage and reduce the interference of the high-voltage pulse on pulse signals, and therefore the stability and the reliability of high-voltage pulse output are improved.

Description

Pulse generating circuit and high-voltage electric pulse tumor therapeutic apparatus

Technical Field

The application relates to the technical field of medical equipment, in particular to a pulse generating circuit and a high-voltage electric pulse tumor therapeutic apparatus.

Background

The high-voltage electric pulse tumor therapeutic equipment is a new type equipment for curing malignant tumor, and combines several techniques of biological medical engineering, high-voltage new technology, modern power electronic technology, computer technology and microelectronic technology, etc. The working process of the high-voltage electric pulse tumor therapeutic apparatus is generally as follows: the instantaneous electric field intensity of the electric field pulse applied to the cell is higher than 1kV/cm (kilovolt per centimeter), the molecular permeability of the cell is greatly improved, and then the electroporation phenomenon is generated, and irreversible electric breakdown occurs along with the continuous increase of the pulse electric field intensity, so that the mechanical rupture of the cell membrane is caused until the cell dies.

At present, the quality of the high-voltage electric pulse tumor therapeutic apparatus needs to be continuously improved, and in the implementation process, the inventor finds that at least the following problems exist in the traditional technology: the traditional high-voltage electric pulse tumor therapeutic apparatus has poor output pulse stability and reliability.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a pulse generating circuit and a high-voltage electric pulse tumor therapeutic apparatus for solving the problems of poor stability and reliability of the output pulse of the conventional high-voltage electric pulse tumor therapeutic apparatus.

In order to achieve the above object, in one aspect, the present application provides a pulse generator for a high-voltage electric pulse tumor therapeutic apparatus, including a control circuit, a pulse generator, and a surge protection circuit; the display device further comprises a first substrate and a second substrate;

the control circuit is arranged on the first substrate; the pulse generator and the surge protection circuit are arranged on the second substrate;

the pulse generator is respectively connected with the control circuit and the surge protection circuit;

wherein, impulse generator one end is used for connecting the charging circuit of high-voltage electric pulse tumor therapeutic instrument, and the other end is used for connecting the discharge circuit of high-voltage electric pulse tumor therapeutic instrument.

In one embodiment, the pulse generator comprises a transistor;

the base electrode of the triode is connected with the control circuit, the collector electrode of the triode is connected with one end of the surge protection circuit, and the emitter electrode of the triode is connected with the other end of the surge protection circuit; the collector of the triode is used for connecting a charging circuit; and the emitter of the triode is used for connecting the discharge circuit.

In one embodiment, the surge protection circuit comprises a resistance-capacitance absorption circuit, a piezoresistor, a fast recovery diode and a high-voltage diode;

one end of the resistance-capacitance absorption circuit is connected with the collector of the triode, and the other end of the resistance-capacitance absorption circuit is connected with the emitter of the triode;

one end of the piezoresistor is connected with the collector of the triode, and the other end of the piezoresistor is connected with the emitter of the triode;

the positive pole of the fast recovery diode is connected with the collector of the triode, and the negative pole of the fast recovery diode is connected with the emitter of the triode;

the anode of the high-voltage diode is connected with the collector of the triode, and the cathode of the high-voltage diode is connected with the emitter of the triode.

In one embodiment, the pulse generator comprises a field effect transistor;

the grid electrode of the field effect transistor is connected with the control circuit, the source electrode of the field effect transistor is connected with one end of the surge protection circuit, and the drain electrode of the field effect transistor is connected with the other end of the surge protection circuit; the drain electrode of the field effect tube is used for connecting the charging circuit; and the source electrode of the field effect transistor is used for connecting the discharge circuit.

one end of the resistance-capacitance absorption circuit is connected with the drain electrode of the field effect transistor, and the other end of the resistance-capacitance absorption circuit is connected with the source electrode of the field effect transistor;

one end of the piezoresistor is connected with the drain electrode of the field effect transistor, and the other end of the piezoresistor is connected with the source electrode of the field effect transistor;

the anode of the fast recovery diode is connected with the drain electrode of the field effect transistor, and the cathode of the fast recovery diode is connected with the source electrode of the field effect transistor;

the anode of the high-voltage diode is connected with the drain electrode of the field effect transistor, and the cathode of the high-voltage diode is connected with the source electrode of the field effect transistor.

In one embodiment, the control circuit comprises a controller, a signal output circuit and a photoelectric isolation circuit;

the controller, the signal output circuit and the photoelectric isolation circuit are arranged on the first substrate;

the controller, the signal output circuit and the photoelectric isolation circuit are electrically connected in sequence; the photoelectric isolation circuit is connected with the pulse generator;

wherein, the controller transmits pulse parameters to the signal output circuit; the signal output circuit transmits a pulse signal generated based on the pulse parameter to the photoelectric isolation circuit; the photoelectric isolation circuit carries out photoelectric isolation processing on the pulse signal and transmits the pulse signal after the photoelectric isolation processing to the pulse generator.

In one embodiment, the control circuit further comprises:

and the Buffer module is connected between the signal output circuit and the photoelectric isolation circuit and used for carrying out power amplification processing on the pulse signal and transmitting the pulse signal after power amplification to the photoelectric isolation circuit.

In one embodiment, the optoelectronic isolation circuit comprises:

the first linear optical coupler isolator is used for carrying out photoelectric isolation processing on the PWM wave control signal sent by the controller, and transmitting the PWM wave control signal after the photoelectric isolation processing to a power supply system of the high-voltage electric pulse tumor therapeutic apparatus;

the linear optical coupler isolator string is used for carrying out photoelectric isolation processing on an analog signal sent by a controlled module of the high-voltage electric pulse tumor therapeutic apparatus and transmitting the analog signal subjected to the photoelectric isolation processing to the controller; the linear optical coupling isolator string comprises a second linear optical coupling isolator and a third linear photoelectric isolator connected with the second linear optical coupling isolator;

the optical fiber isolator is used for carrying out photoelectric isolation processing on the pulse signal sent by the signal output circuit and transmitting the pulse signal after the photoelectric isolation processing to the pulse generator; the charging circuit is also used for carrying out photoelectric isolation processing on the charging control signal sent by the controller and transmitting the charging control signal after the photoelectric isolation processing to the high-voltage electric pulse tumor therapeutic apparatus; the controller is also used for carrying out photoelectric isolation processing on the discharge control signal sent by the controller and transmitting the discharge control signal after the photoelectric isolation processing to a discharge circuit of the high-voltage electric pulse tumor therapeutic apparatus;

the optical coupler isolator is used for realizing the photoelectric isolation transmission of signals between the controller and external computer equipment; and the controller is also used for carrying out photoelectric isolation processing on the level signal sent by the external equipment and transmitting the level signal after the photoelectric isolation processing to the controller.

On the other hand, the embodiment of the application also provides a high-voltage electric pulse tumor therapeutic apparatus, which comprises the pulse generating circuit; the device also comprises a charging circuit, a discharging circuit, a needle way panel and an RFID detection module;

the charging circuit and the discharging circuit are respectively connected with the pulse generator of the pulse generating circuit;

the charging circuit, the discharging circuit and the RFID detection module are respectively connected with the control circuit of the pulse generation circuit;

the discharge circuit, the needle way panel and the RFID detection module are connected in sequence.

In one embodiment, the electrocardioscanner further comprises an external computer device, a foot switch and an electrocardioscanner;

the external computer equipment, the foot switch and the electrocardio monitor are respectively connected with the control circuit.

One of the above technical solutions has the following advantages and beneficial effects:

the pulse generating circuit comprises a control circuit, a pulse generator and a surge protection circuit; the display device further comprises a first substrate and a second substrate; the control circuit is arranged on the first substrate; the pulse generator and the surge protection circuit are arranged on the second substrate; the pulse generator is respectively connected with the control circuit and the surge protection circuit; wherein, pulse generator one end is used for connecting the charging circuit of high-voltage electric pulse tumor therapeutic instrument, and the other end is used for connecting the discharge circuit of high-voltage electric pulse tumor therapeutic instrument, and surge in the high-voltage pulse production process can be suppressed to this application pulse generation circuit, absorbs transient overvoltage, reduces high-voltage pulse to pulse signal's interference to stability and reliability of high-voltage pulse output are provided.

Drawings

The foregoing and other objects, features and advantages of the application will be apparent from the following more particular description of preferred embodiments of the application, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the subject matter of the present application.

FIG. 1 is a schematic diagram of a pulse generating circuit according to an embodiment;

FIG. 2 is a schematic diagram of a control circuit according to an embodiment;

FIG. 3 is a schematic diagram of a control circuit according to another embodiment;

FIG. 4 is a schematic diagram of an exemplary high voltage electric pulse tumor therapy device;

FIG. 5 is a schematic view of another embodiment of a high voltage electric pulse tumor therapy device;

fig. 6 is a schematic structural diagram of another embodiment of the high-voltage electric pulse tumor therapeutic apparatus.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. The terms "mounted," "one end," "the other end," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In order to solve the problem of poor stability and reliability of the output pulse of the conventional high-voltage electric pulse tumor therapeutic apparatus, in one embodiment, referring to fig. 1, there is provided a pulse generating circuit, which is applied to a high-voltage electric pulse tumor therapeutic apparatus, including:

a control circuit 11, a pulse generator 13, and a surge protection circuit 15; further comprising a first substrate 17 and a second substrate 19;

the control circuit 11 is arranged on the first substrate 17; the pulse generator 13 and the surge protection circuit 15 are arranged on the second substrate 19;

the pulse generator 13 is respectively connected with the control circuit 11 and the surge protection circuit 15;

wherein, one end of the pulse generator 13 is used for connecting a charging circuit of the high-voltage electric pulse tumor therapeutic apparatus, and the other end is used for connecting a discharging circuit of the high-voltage electric pulse tumor therapeutic apparatus.

It should be noted that the instruction is used to input an instruction to the control circuit according to an actual demand, and the control circuit generates a pulse signal according to the instruction, specifically, the instruction is used to instruct the control circuit to generate a pulse signal with a corresponding pulse period, pulse width, and pulse number. The pulse signal is a control signal of the pulse generator and is used for indicating the pulse generator to convert high-voltage electricity output by a charging circuit of the high-voltage electric pulse tumor therapeutic apparatus into high-voltage pulse.

The pulse generator converts the high voltage output by the charging circuit of the high voltage electric pulse tumor therapeutic apparatus into high voltage pulse under the control of the pulse signal, and then transmits the high voltage pulse to the discharging circuit of the high voltage electric pulse tumor therapeutic apparatus. The surge protection circuit is connected with the pulse generator and used for protecting the surge protection circuit, absorbing pulse spikes in the surge protection circuit, suppressing surge and protecting pulse output.

In one example, the pulse generator comprises a triode; the base electrode of the triode is connected with the control circuit, the collector electrode of the triode is connected with one end of the surge protection circuit, and the emitter electrode of the triode is connected with the other end of the surge protection circuit; the collector of the triode is used for connecting a charging circuit; and the emitter of the triode is used for connecting the discharge circuit.

It should be noted that the triode is periodically switched on and off under the control of the pulse signal to convert the high voltage output by the charging circuit of the high voltage electric pulse tumor therapeutic apparatus into high voltage pulse. The surge protection circuit is connected between the collector and the emitter of the triode, and comprises a resistance-capacitance absorption circuit, a piezoresistor, a fast recovery diode and a high-voltage diode; one end of the resistance-capacitance absorption circuit is connected with the collector of the triode, and the other end of the resistance-capacitance absorption circuit is connected with the emitter of the triode; one end of the piezoresistor is connected with the collector of the triode, and the other end of the piezoresistor is connected with the emitter of the triode; the positive pole of the fast recovery diode is connected with the collector of the triode, and the negative pole of the fast recovery diode is connected with the emitter of the triode; the anode of the high-voltage diode is connected with the collector of the triode, and the cathode of the high-voltage diode is connected with the emitter of the triode.

In yet another example, the pulse generator includes a field effect transistor; the grid electrode of the field effect transistor is connected with the control circuit, the source electrode of the field effect transistor is connected with one end of the surge protection circuit, and the drain electrode of the field effect transistor is connected with the other end of the surge protection circuit; the drain electrode of the field effect tube is used for connecting the charging circuit; and the source electrode of the field effect transistor is used for connecting the discharge circuit.

The field effect transistor is periodically switched on and off under the control of the pulse signal to convert the high voltage output by the charging circuit of the high voltage electric pulse tumor therapeutic apparatus into high voltage pulse. The surge protection circuit is connected between the grid and the drain of the field effect transistor, and comprises a resistance-capacitance absorption circuit, a piezoresistor, a fast recovery diode and a high-voltage diode; one end of the resistance-capacitance absorption circuit is connected with the drain electrode of the field effect transistor, and the other end of the resistance-capacitance absorption circuit is connected with the source electrode of the field effect transistor; one end of the piezoresistor is connected with the drain electrode of the field effect transistor, and the other end of the piezoresistor is connected with the source electrode of the field effect transistor; the anode of the fast recovery diode is connected with the drain electrode of the field effect transistor, and the cathode of the fast recovery diode is connected with the source electrode of the field effect transistor; the anode of the high-voltage diode is connected with the drain electrode of the field effect transistor, and the cathode of the high-voltage diode is connected with the source electrode of the field effect transistor.

In each embodiment of the pulse generating circuit, the pulse generating circuit comprises a control circuit, a pulse generator and a surge protection circuit; the display device further comprises a first substrate and a second substrate; the control circuit is arranged on the first substrate; the pulse generator and the surge protection circuit are arranged on the second substrate; the pulse generator is respectively connected with the control circuit and the surge protection circuit; wherein, pulse generator one end is used for connecting the charging circuit of high-voltage electric pulse tumor therapeutic instrument, and the other end is used for connecting the discharge circuit of high-voltage electric pulse tumor therapeutic instrument, and surge in the high-voltage pulse production process can be suppressed to this application pulse generation circuit, absorbs transient overvoltage, reduces high-voltage pulse to pulse signal's interference to stability and reliability of high-voltage pulse output are provided.

In one embodiment, referring to fig. 2, the control circuit 11 of the pulse generating circuit includes a controller 111, a signal output circuit 113, and a photo-isolation circuit 115;

the controller 111, the signal output circuit 113, and the photo-isolation circuit 114 are disposed on the first substrate 17;

the controller 111, the signal output circuit 113 and the photoelectric isolation circuit 115 are electrically connected in sequence; the photoelectric isolation circuit 115 is connected with the pulse generator 13;

wherein, the controller 111 transmits the pulse parameter to the signal output circuit 113; the signal output circuit 113 transmits a pulse signal generated based on the pulse parameter to the photoelectric isolation circuit 115; the photoelectric isolation circuit 115 performs photoelectric isolation processing on the pulse signal, and transmits the pulse signal after the photoelectric isolation processing to the pulse generator 13.

It should be noted that, a user inputs an instruction to the controller according to actual needs, and the controller generates corresponding pulse parameters according to the instruction. The controller generates pulse parameters and writes the pulse parameters into the signal output circuit. The pulse parameters are used to characterize the pulse signal, which includes the pulse period, pulse width, and number of pulses. In one example, the controller includes a Central Processing Unit (CPU) module, which is connected to the signal output circuit.

The signal output circuit is internally provided with a preset safety threshold in advance, after the pulse parameter is written in by the controller, the signal output circuit judges whether the pulse parameter is smaller than the preset safety threshold, and if the pulse parameter is smaller than the preset safety threshold, the signal output circuit generates a pulse signal according to the pulse parameter, so that the safety of pulse signal output is improved, and the safety of the controller for generating and outputting the pulse signal is improved. In one example, the signal output circuit may be a programmable logic or a processor, or other device for generating a pulse signal. Before generating the pulse signal, the signal output circuit needs to judge whether the pulse period of the pulse parameter is smaller than the preset pulse period, whether the pulse width of the pulse parameter is smaller than the preset pulse width and whether the pulse number of the pulse parameter is smaller than the preset pulse number, and if the pulse period of the pulse parameter is smaller than the preset pulse period, the pulse width of the pulse parameter is smaller than the preset pulse width and the pulse number of the pulse parameter is smaller than the preset pulse number, the signal output circuit generates the pulse signal according to the pulse parameter. In one example, a preset safety threshold may be configured in the controller, and the controller determines whether the pulse parameter is smaller than the preset safety threshold after generating the pulse parameter according to an instruction input by a user, and writes the pulse parameter into the signal output circuit if the pulse parameter is smaller than the preset safety threshold. In one example, the signal output circuit is a digital signal output circuit.

To further enhance the immunity to interference of the pulse signal and the accuracy of outputting the pulse signal, in one example, the signal output circuit is configured to output a high level when no pulse signal is output.

The photoelectric isolation circuit receives the pulse signal sent by the signal output circuit, converts the pulse signal into an optical signal, converts the optical signal into the pulse signal during output and transmits the pulse signal to the pulse generator, namely, the pulse signal is transmitted to the pulse generator after being subjected to photoelectric isolation processing, so that the pulse signal is isolated, and the anti-interference performance in the pulse signal transmission process is improved.

The first substrate and the second substrate can be paper substrates, glass fiber cloth substrates, composite substrates, laminated multilayer substrate, etc. The control circuit, the pulse generator and the surge protection circuit are loaded on the substrate, so that the pulse generator circuit is convenient to use, place and store.

In various embodiments of the pulse generating circuit of the present application, the control circuit includes: the controller is used for generating and outputting pulse parameters; the pulse parameters comprise pulse period, pulse width and pulse number; the signal output circuit is used for generating and outputting a pulse signal according to the pulse parameter when the pulse parameter is smaller than a preset safety threshold value; the photoelectric isolation circuit is used for performing photoelectric isolation processing on the pulse signals and outputting the pulse signals subjected to the photoelectric isolation processing to the pulse generator, so that an interference propagation path of the pulse signals is isolated, the anti-interference performance of the pulse signals is enhanced, the accuracy of the pulse signals is improved, and the anti-interference capacity of the tumor therapeutic apparatus is further improved.

In one embodiment, referring to fig. 3, the control circuit further comprises: the Buffer module 117, the Buffer module 117 is connected between the signal output circuit 113 and the optoelectronic isolation circuit 115, and is configured to perform power amplification processing on the pulse signal, and transmit the pulse signal after power amplification to the optoelectronic isolation circuit 115.

It should be noted that the Buffer module (i.e., the level conversion module) is used for performing power amplification processing on the pulse signal and transmitting the pulse signal to the pulse generator through the optoelectronic isolation circuit, so that the anti-interference performance of the pulse signal can be further improved.

In order to enhance the anti-interference performance of various signals sent by the controller and various signals received by the controller in the high-voltage environment in the high-voltage electric pulse tumor therapeutic apparatus and improve the accuracy of signal transmission, in one example, the Buffer module is further used for performing power amplification processing on the control signal sent by the controller, and transmitting the control signal after power amplification to the photoelectric isolation circuit;

the photoelectric isolation circuit is also used for carrying out photoelectric isolation processing on the control signal and transmitting the control signal after the photoelectric isolation processing to a controlled module of the high-voltage electric pulse tumor therapeutic apparatus;

the control signal is used for instructing the controlled module to execute corresponding action; the control signal includes a charge control signal, a PWM (Pulse Width Modulation) wave control signal, and/or a discharge control signal.

It should be noted that, in order to ensure that each controlled module of the high-voltage electric pulse tumor therapeutic apparatus can operate in a coordinated and ordered manner, the controller sends a control signal to each controlled module to instruct each controlled module to execute a corresponding action according to the control signal. In order to improve the anti-interference performance of the control signal, the control signal is subjected to power amplification processing through a Buffer module, and then subjected to photoelectric isolation processing through a photoelectric isolation circuit and transmitted to a controlled module. The control signal comprises a charging control signal, a Pulse Width Modulation (PWM) wave control signal and/or a discharging control signal, wherein the charging control signal is transmitted to the charging circuit to instruct the charging circuit to start or stop charging; transmitting the PWM wave control signal to a power supply system to indicate the power supply system to output corresponding voltage; the discharge control signal is transmitted to the discharge circuit to instruct the discharge circuit to start or stop discharging. The controlled module is one or any combination of the following circuits: charging circuit, power supply system and discharge circuit.

In one example, the optoelectronic isolation circuit is further configured to perform optoelectronic isolation processing on an analog signal sent by the controlled module, and transmit the analog signal after the optoelectronic isolation processing to the controller;

and the controller is also used for identifying the running state of the controlled module according to the analog signal.

It should be noted that, in addition to controlling each controlled module, the controller also monitors the operation state of each controlled module, so as to ensure the safe and stable operation of the controlled module. In order to improve the anti-interference performance of the analog signal, each controlled module feeds back the analog signal to the controller through the photoelectric isolation circuit, the controller identifies the running state of the controlled module according to the analog signal, for example, the charging circuit feeds back the analog signal to the controller through the photoelectric isolation circuit, and the controller can identify whether the charging circuit is fully charged or not, whether the charging circuit is currently in the charging state or not according to the analog signal; the pulse generator feeds back an analog signal to the controller through the photoelectric isolation circuit, and the controller identifies whether the pulse generator can normally generate a pulse signal, parameters of the pulse signal and the like according to the analog signal; the discharge circuit feeds back an analog signal to the controller through the photoelectric isolation circuit, and the controller identifies the discharge voltage, the discharge needle channel and the like of the discharge circuit according to the analog signal.

In one example, the optoelectronic isolation circuit is further configured to perform optoelectronic isolation processing on a level signal sent by the external device, and transmit the level signal after the optoelectronic isolation processing to the Buffer module; the external equipment is a foot switch and/or an electrocardio monitor;

the Buffer module is also used for carrying out level conversion processing on the level signal and transmitting the level signal after the level conversion processing to the controller;

and the controller is also used for identifying the running state of the external equipment according to the level signal.

The controller further includes an expansion interface, which is capable of expanding and connecting external devices, for example, the external devices include a foot switch, an electrocardiograph monitor, and the like, so that the controller realizes unified monitoring of the devices in the expansion connection. In order to improve the anti-interference performance of the level signal, each external device feeds back the level signal to the controller through the photoelectric isolation circuit and the Buffer module, the controller identifies the running state of the external device according to the level signal, for example, the foot switch feeds back the level signal to the controller through the photoelectric isolation circuit and the Buffer module, the controller identifies the open state, the closed state and the like of the foot switch according to the level signal, and if the foot switch is identified to be in the closed state, the power supply system is controlled to supply power to the high-voltage electric pulse tumor therapeutic apparatus, and the operation is started; if the high-voltage electric pulse tumor therapeutic apparatus is in the off state, the power supply system is controlled to stop supplying power to the high-voltage electric pulse tumor therapeutic apparatus, and the high-voltage electric pulse tumor therapeutic apparatus stops working. The Buffer module is used for buffering the level signal and carrying out level conversion, so that the level signal passing through the photoelectric isolation circuit can be level-matched with the controller and the signal output circuit, and the controller and the signal output circuit are protected, and meanwhile, level identification monitoring can be accurately carried out.

In one example, the Buffer module is further configured to perform power amplification processing on a signal sent by the controller, and transmit the signal after power amplification to the optoelectronic isolation circuit;

the photoelectric isolation circuit is also used for carrying out photoelectric isolation processing on the signals and transmitting the signals after the photoelectric isolation processing to external computer equipment.

It should be noted that the external computer device may be an input end through which a user inputs an instruction to the controller, and may also receive a signal transmitted by the controller, so that there is signal interaction between the external computer device and the controller, and in order to improve the anti-interference performance of the signal interaction, on one hand, the controller transmits a signal to the external computer device through the Buffer module and the optoelectronic isolation circuit, and on the other hand, the external computer device transmits a signal to the controller through the optoelectronic isolation circuit and the Buffer module.

In each embodiment of the pulse generating circuit, signals output by the controller and received signals are isolated, so that the anti-interference performance of signal transmission is improved, and the transmission accuracy of the signals is ensured.

In order to isolate various types of signals and realize parallel transmission, in one embodiment, the photoelectric isolation circuit comprises:

In each embodiment of the pulse generation circuit, the photoelectric isolation circuit comprises a first linear optical coupler isolator, a linear optical coupler isolator string, an optical fiber isolator and an optical coupler isolator, wherein the first linear optical coupler isolator, the optical fiber isolator and the optical coupler isolator perform 'electro-optic-electrical' conversion on signals, the linear optical coupler isolator string performs 'electro-optic-electrical' conversion on the signals, the signals are isolated and transmitted, the interference of the signals in a high-voltage environment is reduced, and the accuracy and the anti-interference capability of the signal transmission are improved.

In one embodiment, referring to fig. 4, there is provided a high voltage electric pulse tumor treatment apparatus comprising the above pulse generating circuit; the device also comprises a charging circuit 41, a discharging circuit 43, a needle track panel 43 and an RFID detection module 45;

the charging circuit 41 and the discharging circuit 43 are respectively connected with the pulse generator 13 of the pulse generating circuit;

the charging circuit 41, the discharging circuit 45 and the RFID detection module 47 are respectively connected with the control circuit 11 of the pulse generation circuit;

the discharge circuit 43, the needle lane panel 45, and the RFID detection module 47 are connected in this order.

It should be noted that the controlled board is a controlled object, and a charging circuit, a discharging circuit, and the like are provided thereon. Further, the pulse generator of the pulse generating circuit may be provided on the controlled board. The charging circuit is used for storing electric energy, and the discharging circuit is used for discharging electricity to the needle way panel. The needle channel panel comprises a plurality of pairs of discharge needles, and the discharge needles can be selected through the control panel according to actual requirements. Specifically, the charging circuit, the discharging circuit and the RFID detection module are respectively connected with the controller through the photoelectric isolation circuit and the Buffer module.

In one example, referring to fig. 5, the high voltage electric pulse oncology treatment apparatus further comprises an external computer device 49, a foot switch 51 and an electrocardiograph monitor 53; the external computer device 49, the foot switch 51 and the electrocardio monitor 53 are respectively connected with the control circuit 11. Specifically, the external computer equipment, the foot switch and the electrocardioscanner are respectively connected with the controller through the photoelectric isolation circuit and the Buffer module. It should be noted that, the functions of the external computer device, the foot switch, and the electrocardiograph monitor, and the signal transmission modes between the external computer device, the foot switch, the electrocardiograph monitor, and the control circuit, etc. please refer to the description in each embodiment of the control circuit of this application, and the description is omitted here.

In another example, as described with reference to fig. 6, the high voltage electric pulse oncology treatment apparatus further comprises a power control circuit 55, a power system 57; the power supply control circuit 55 is connected to the external computer device 49 and the power supply system 57, respectively; the power supply system 57 is connected to the control circuit 11 and the charging circuit 41, respectively. Specifically, the power supply system is connected with the controller through the photoelectric isolation circuit and the Buffer module.

In another example, the high-voltage electric pulse tumor therapeutic apparatus further comprises a temperature detection device connected to the control circuit for monitoring the temperature of the discharge area of the needle track panel and feeding back the temperature to the control circuit, wherein the control circuit controls the discharge circuit to stop discharging when the temperature exceeds a preset threshold. Specifically, the temperature detection device is connected with the controller through a photoelectric isolation circuit.

In each embodiment of the high-voltage electric pulse tumor therapeutic apparatus, each signal transmission in the high-voltage electric pulse tumor therapeutic apparatus is good in isolation effect and has extremely strong anti-interference performance, so that each signal is accurately transmitted, and the safe and stable operation of the high-voltage electric pulse tumor therapeutic apparatus is ensured.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A pulse generating circuit is characterized in that the pulse generating circuit is applied to a high-voltage electric pulse tumor therapeutic apparatus; the surge protection circuit comprises a control circuit, a pulse generator and a surge protection circuit; the display device further comprises a first substrate and a second substrate;

one end of the pulse generator is used for being connected with a charging circuit of the high-voltage electric pulse tumor therapeutic apparatus, and the other end of the pulse generator is used for being connected with a discharging circuit of the high-voltage electric pulse tumor therapeutic apparatus.

2. The pulse generating circuit of claim 1, wherein the pulse generator comprises a transistor;

the base electrode of the triode is connected with the control circuit, the collector electrode of the triode is connected with one end of the surge protection circuit, and the emitter electrode of the triode is connected with the other end of the surge protection circuit; the collector of the triode is used for being connected with the charging circuit; and the emitter of the triode is used for being connected with the discharge circuit.

3. The pulse generating circuit of claim 2, wherein the surge protection circuit comprises a resistor-capacitor snubber circuit, a voltage dependent resistor, a fast recovery diode, and a high voltage diode;

one end of the resistance-capacitance absorption circuit is connected with the collector of the triode, and the other end of the resistance-capacitance absorption circuit is connected with the emitter of the triode; one end of the piezoresistor is connected with the collector of the triode, and the other end of the piezoresistor is connected with the emitter of the triode; the positive electrode of the fast recovery diode is connected with the collector electrode of the triode, and the negative electrode of the fast recovery diode is connected with the emitter electrode of the triode; the anode of the high-voltage diode is connected with the collector of the triode, and the cathode of the high-voltage diode is connected with the emitter of the triode.

4. The pulse generating circuit of claim 1, wherein the pulse generator comprises a field effect transistor;

the grid electrode of the field effect transistor is connected with the control circuit, the source electrode of the field effect transistor is connected with one end of the surge protection circuit, and the drain electrode of the field effect transistor is connected with the other end of the surge protection circuit; the drain electrode of the field effect transistor is used for being connected with the charging circuit; and the source electrode of the field effect transistor is used for connecting the discharge circuit.

5. The pulse generating circuit of claim 4, wherein the surge protection circuit comprises a resistor-capacitor snubber circuit, a voltage dependent resistor, a fast recovery diode, and a high voltage diode;

one end of the resistance-capacitance absorption circuit is connected with the drain electrode of the field effect transistor, and the other end of the resistance-capacitance absorption circuit is connected with the source electrode of the field effect transistor; one end of the piezoresistor is connected with the drain electrode of the field effect transistor, and the other end of the piezoresistor is connected with the source electrode of the field effect transistor; the anode of the fast recovery diode is connected with the drain electrode of the field effect transistor, and the cathode of the fast recovery diode is connected with the source electrode of the field effect transistor; the anode of the high-voltage diode is connected with the drain electrode of the field effect transistor, and the cathode of the high-voltage diode is connected with the source electrode of the field effect transistor.

6. The pulse generating circuit according to any one of claims 1 to 5, wherein the control circuit comprises a controller, a signal output circuit, and a photoelectric isolation circuit;

wherein the controller transmits pulse parameters to the signal output circuit; the signal output circuit transmits a pulse signal generated based on the pulse parameter to the photoelectric isolation circuit; and the photoelectric isolation circuit carries out photoelectric isolation processing on the pulse signal and transmits the pulse signal after the photoelectric isolation processing to the pulse generator.

7. The pulse generating circuit of claim 6, wherein the control circuit further comprises:

8. The pulse generating circuit of claim 7, wherein the optoelectronic isolation circuit comprises:

the first linear optical coupler isolator is used for carrying out photoelectric isolation processing on the PWM wave control signal sent by the controller, and the PWM wave control signal after the photoelectric isolation processing is transmitted to a power supply system of the high-voltage electric pulse tumor therapeutic apparatus;

the linear optical coupler isolator string is used for carrying out photoelectric isolation processing on an analog signal sent by a controlled module of the high-voltage electric pulse tumor therapeutic apparatus and transmitting the analog signal subjected to the photoelectric isolation processing to the controller; the linear optical coupler isolator string comprises a second linear optical coupler isolator and a third linear photoelectric isolator connected with the second linear optical coupler isolator;

9. A high voltage electrical pulse tumor treatment apparatus comprising the pulse generating circuit of any one of claims 1 to 8; the device also comprises a charging circuit, a discharging circuit, a needle way panel and an RFID detection module;

the charging circuit and the discharging circuit are respectively connected with a pulse generator of the pulse generating circuit;

10. The high-voltage electric pulse tumor therapeutic apparatus according to claim 9, further comprising an external computer device, a foot switch and an electrocardiograph;