CN111956936A

CN111956936A - Pressure wave balloon catheter identification method and treatment device for angioplasty

Info

Publication number: CN111956936A
Application number: CN202010865586.3A
Authority: CN
Inventors: 刘斌; 洪林生
Original assignee: Sonosemi Medical Co Ltd
Current assignee: Sonosemi Medical Co Ltd
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2020-11-20
Anticipated expiration: 2040-08-25
Also published as: CN111956936B

Abstract

The application is suitable for the technical field of medical instruments, and provides a pressure wave saccule catheter identification method and a treatment device for angioplasty, wherein the pressure wave saccule catheter identification method comprises a high-voltage pulse power supply host and a pressure wave saccule catheter which are communicated with each other, a main control module is used for sending a test signal to a detection module of the pressure wave saccule catheter, receiving the characteristic parameters fed back by the detection module in response to the test signal, and determining a first model of the pressure wave saccule catheter according to the characteristic parameters; the main control module is also used for reading a model identifier prestored in the storage module of the pressure wave saccule catheter, determining a second model of the pressure wave saccule catheter according to the model identifier, and determining the model if the model identifiers are consistent after comparison. The model of the pressure wave saccule conduit does not need to be manually judged, the required working mode or output energy does not need to be input and set by recognition, the operation is simple, and the judgment and operation errors are avoided.

Description

Pressure wave balloon catheter identification method and treatment device for angioplasty

Technical Field

The application belongs to the technical field of medical equipment, and particularly relates to a pressure wave balloon catheter identification method, a treatment device for angioplasty and a power supply host for angioplasty.

Background

In recent years, a kind of hydroelectrosurgery based on a high-voltage underwater discharge technique has been used by clinicians to destroy calcified deposits or stones in the urethra or biliary tract, and therefore, the high-voltage underwater discharge technique can also be used to destroy calcified plaques in the vessel walls. One or more pairs of discharge electrodes are placed in a balloon adopted in Percutaneous balloon angioplasty (PTA) to form a set of pressure wave generator device, and then the electrodes are connected to a high-voltage pulse power supply host at the other end of the balloon dilatation catheter through a connector. When the sacculus is placed at the calcification focus in the blood vessel, the system makes pressure wave generator release the pressure wave through applying high-pressure pulse, and the pressure wave can selectively destroy the calcification plaque in the vascular wall, effectively avoids causing the damage to the vascular wall simultaneously.

However, in general, during clinical intervention, a clinician needs to select pressure wave balloon catheters with different diameters according to different sizes of a treated blood vessel, and needs to set a required working mode or output energy on a high-voltage pulse power supply host according to different types of the pressure wave balloon catheters, so that the operation is complex and errors are easy to occur.

Disclosure of Invention

In order to overcome the problems in the related art, the embodiment of the application provides an identification method of a pressure wave balloon catheter and a treatment device for angioplasty.

The application is realized by the following technical scheme:

in a first aspect, an embodiment of the present application provides a pressure wave balloon catheter identification method, including:

sending a test signal to the pressure wave balloon catheter;

acquiring a feedback signal fed back by the pressure wave balloon catheter in response to the test signal;

obtaining corresponding characteristic parameters according to the feedback signals to determine a first model of the pressure wave balloon catheter;

reading a model identifier pre-stored in the pressure wave saccule catheter, and determining a second model of the pressure wave saccule catheter according to the model identifier;

and comparing the first model with the second model, determining the model of the pressure wave saccule conduit if the first model and the second model are consistent, and sending a warning signal if the first model and the second model are inconsistent.

In one embodiment, the obtaining of the characteristic parameter fed back by the pressure wave balloon catheter in response to the test signal is obtaining the characteristic parameter fed back by the pressure wave generator of the pressure wave balloon catheter in response to the test signal.

In one embodiment, the test signal comprises a voltage signal and the characteristic parameter comprises an impedance value.

In a second aspect, the present application provides a therapeutic apparatus for angioplasty, including a high-voltage pulse power supply host and a pressure wave balloon catheter, which communicate with each other, wherein: the high-voltage pulse power supply host comprises a main control module, a display module and a pulse power supply module for releasing a high-voltage pulse signal; the pressure wave balloon catheter comprises a storage module, a pressure wave generator for generating pressure waves and a detection module for generating and detecting characteristic parameters of the pressure wave generator;

the main control module is used for sending a test signal to the detection module, receiving a feedback signal fed back by the detection module in response to the test signal, and obtaining the characteristic parameter according to the feedback signal, and the main control module determines the first model of the pressure wave saccule conduit according to the characteristic parameter;

the main control module is also used for reading the model identification prestored in the storage module, determining the second model of the pressure wave saccule conduit according to the model identification, comparing the first model with the second model, determining the model of the pressure wave saccule conduit if the first model and the second model are consistent, and sending out a warning signal if the first model and the second model are inconsistent.

In one embodiment, the main control module is further used for controlling the pulse power supply module to release a high-voltage pulse signal matched with the type of the pressure wave balloon catheter according to the determined type of the pressure wave balloon catheter to drive the pressure wave generator to generate the target pressure wave.

In one embodiment, the detection module includes a first voltage divider, a second voltage divider, and a third voltage divider, and the first voltage divider, the second voltage divider, the third voltage divider, and the pressure wave generator are connected in a wheatstone bridge.

In one embodiment, the resistances of the first voltage divider, the second voltage divider, and the third voltage divider are the same.

In one embodiment, the high-voltage pulse power supply host further includes a digital-to-analog converter and an analog-to-digital converter, the digital-to-analog converter is configured to convert the test signal output by the main control module into a voltage signal to be applied to two opposite connection points of the wheatstone bridge, and the analog-to-digital converter is configured to convert voltages of the other two opposite connection points of the wheatstone bridge into digital signals to be input to the main control module.

In one embodiment, the main control module is further configured to determine the number of electrode pairs of the pressure wave generator according to an impedance value obtained from the digital signal and the impedance value, so as to determine the first model.

In one embodiment, the digital-to-analog converter and the analog-to-digital converter are built in or externally arranged on the main control module

In a third aspect, embodiments of the present application provide a power supply host for angioplasty, for docking a pressure wave balloon catheter, wherein: the power supply host comprises a main control module, a display module and a pulse power supply module for releasing a high-voltage pulse signal; the pressure wave saccule catheter comprises a storage module and a pressure wave generator for generating pressure waves, wherein the main control module is used for reading a model identifier pre-stored in the storage module and determining a first model of the pressure wave saccule catheter according to the model identifier, and the pressure wave saccule catheter further comprises a detection module for generating and detecting characteristic parameters of the pressure wave generator;

the main control module is used for sending a test signal to the detection module, the detection module receives and responds to the test signal to feed back a feedback signal, and the main control module is also used for obtaining corresponding characteristic parameters according to the feedback signal and determining a second model of the pressure wave saccule conduit according to the characteristic parameters; and comparing the first model with the second model, determining the model of the pressure wave saccule conduit if the first model and the second model are consistent, and sending a warning signal if the first model and the second model are inconsistent.

Compared with the prior art, the embodiment of the application has the advantages that:

according to the embodiment of the application, the pre-stored model identification of the pressure wave saccule conduit can be directly read, a model can be determined according to the detection result by sending the test signal, the real model of the pressure wave saccule conduit can be determined by self in a double detection and comparison mode, the model of the pressure wave saccule conduit does not need to be manually judged, the required working mode or output energy does not need to be input and set, the operation is simple, and the judgment and operation errors are avoided; in addition, the mode of double detection and comparison for confirming the model analogy can also detect whether the product is a fake and fake product with a tampered pre-stored model identifier, and the safety of the treatment device is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the specification.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic structural view of a treatment device for angioplasty provided in accordance with an embodiment of the present application;

FIG. 2A is a schematic electrical circuit diagram of a detection module in the treatment apparatus for angioplasty shown in FIG. 1;

FIG. 2B is a Wheatstone bridge equivalent circuit diagram of the detection module of the treatment apparatus for angioplasty shown in FIG. 1;

fig. 3 is a schematic flow chart of a pressure wave balloon catheter identification method provided in an embodiment of the present application.

FIG. 4 is a schematic diagram of an internal circuit configuration of the Marx generator;

fig. 5 is a schematic block diagram of a driving circuit of a pulse power module according to an embodiment of the present disclosure;

fig. 6 is a schematic block diagram of a driving circuit according to another embodiment of the present disclosure;

fig. 7 is a schematic diagram of a unit structure of a power supply circuit in the driving circuit shown in fig. 6;

fig. 8 is a schematic block diagram of a driving circuit according to another embodiment of the present disclosure;

fig. 9 is a schematic circuit diagram of an example of a driving circuit according to an embodiment of the present disclosure.

Fig. 10 is a schematic block diagram of a power supply according to an embodiment of the present disclosure;

fig. 11 is a schematic block diagram of a power supply according to another embodiment of the present disclosure;

fig. 12 is a schematic block diagram of a power supply according to another embodiment of the present disclosure;

fig. 13 is an exemplary circuit schematic of a power supply provided herein.

Detailed Description

In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It should also be understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

As used in this specification and the appended claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to" determining "or" in response to detecting ". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".

Furthermore, in the description of the present application and the appended claims, the terms "first," "second," "third," and the like are used for distinguishing between descriptions and not necessarily for describing or implying relative importance.

Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.

Referring to fig. 1, a therapeutic device for angioplasty generally comprises a high voltage pulse power supply main unit 10 and a pressure wave balloon catheter 20, which are used for treating and eliminating calcified plaque in a blood vessel wall so as to restore normal blood flow in the blood vessel. Generally, during clinical intervention, a clinician does not need to perform complicated operations on the high-voltage pulse power supply main machine 10, and only needs to select the pressure wave balloon catheter 20 with different diameters according to different sizes of treated blood vessels. Therefore, the high-voltage pulse power supply host 10 needs to realize high-degree intellectualization, can automatically identify the pressure wave balloon catheter 20 inserted into different types on the connection port of the host 10, and also needs to automatically set the system working parameters of the host 10 according to the identified type of the pressure wave balloon catheter 20 to match the working modes or output energies, such as high-voltage pulse amplitude, pulse width, frequency, pulse number and the like, required by different types of the pressure wave balloon catheters 20.

In view of the above problems, the therapeutic apparatus for angioplasty in the embodiment of the present application employs a high-voltage pulse power supply main unit 10 and a pressure wave balloon catheter 20 that communicate with each other using a Serial Peripheral Interface (SPI).

The high-voltage pulse power supply host 10 comprises a main control module 11, a display module 12 and a pulse power supply module 13 used for releasing high-voltage pulse signals, wherein the main control module 11 comprises a single chip microcomputer and a peripheral circuit, the single chip microcomputer can be internally provided with an analog-to-digital converter (ADC) and a digital-to-analog converter (DAC), the display module 12 can adopt a common liquid crystal display screen and is generally used for displaying working information of a treatment device, detection information, alarm information, treatment information and the like, the pulse power supply module 13 comprises a power supply, a Marx generator and a driving circuit for driving the Marx generator, the Marx generator comprises a plurality of transistors and a plurality of capacitors, and the plurality of transistors control the plurality of capacitors to be charged in parallel and discharged in series under the control of the driving circuit so as to release the high-voltage pulse.

The pressure wave balloon catheter 20 comprises a storage module 21, a pressure wave generator 22 for generating pressure waves, and a detection module 23 for generating characteristic parameters of the detection pressure wave generator 22; the storage module 21 can adopt a Flash chip; the pressure wave generator 22 comprises at least one pair of voltage release electrodes, the voltage release electrodes are connected with the Marx generator through metal wires, and the pressure wave generator 22 is used for generating and outputting pressure waves when receiving high-voltage pulses and applying the pressure waves to calcified plaques.

In the embodiment of the application, the main control module 11 is configured to send a test signal to the detection module 23, receive a feedback signal fed back by the detection module 23 in response to the test signal, and obtain a characteristic parameter according to the feedback signal, and the main control module 11 further determines the first model of the pressure wave balloon catheter 20 according to the characteristic parameter; the main control module 11 is further configured to read a model identifier pre-stored in the storage module 21, determine a second model of the pressure wave balloon catheter 20 according to the model identifier, compare the first model with the second model, determine the model of the pressure wave balloon catheter 20 if the first model and the second model are the same, and send an alarm signal if the first model and the second model are not the same.

In one embodiment, the format of data stored in the Flash chip is as shown in table 1 below:

table 1:

field 1	Field 2	Field 3	Field 4
				Type of catheter	Manufacturer of the product	Production batch	Catheter ID
8-bit	8-bit	16-bit	32-bit

Referring to fig. 2A, in an embodiment, the detection module 23 includes a first voltage divider R2, a second voltage divider R3, and a third voltage divider R4, wherein the first voltage divider R2, the second voltage divider R3, the third voltage divider R4, and the pressure wave generator 22 are connected to form a wheatstone bridge. Two opposite connection points of the Wheatstone bridge can be used as input, one is used for receiving a test signal, and the other end is connected with a common potential; and the other two opposite connection points of the Wheatstone bridge are connected with a common potential at the other end, and one connection point is used for outputting a feedback signal. In another embodiment, the detecting module 23 includes a voltage divider, for example, the voltage divider may be composed of a plurality of resistors connected in series and parallel, the voltage divider is connected in series with the pressure wave generator 22 to form a voltage dividing network, one end of the voltage dividing network is connected to the test signal, the other end of the voltage dividing network is connected to the common potential, and a connection point of the voltage dividing network and the pressure wave generator 22 outputs the feedback signal. The common potential may be ground.

It should be noted that the test signal and the feedback signal are both voltage signals, and if the ADC 15 and the DAC 14 are built in the main control module 11, the main control module 11 and the detection module 23 may directly transmit analog voltage signals.

If the main control module 11 does not have the built-in ADC 15 and DAC 14, the high voltage pulse power supply main unit 23 further includes the ADC 15 and DAC 14, the DAC 14 is configured to convert the test signal output by the main control module 11 into a voltage signal to be loaded on the detection module 23, the ADC 15 is configured to convert the feedback signal into a digital signal to be input to the main control module 11, and a voltage value is obtained inside the main control module 11, which is used for calculating the impedance parameter of the pressure wave generator 22.

Referring to fig. 2A and 2B, for example, assuming that the first voltage divider R2, the second voltage divider R3, and the third voltage divider R4 in the detection module 23 are the same resistors, and the resistance values are known as X, and R1 is the electrode impedance of the pressure wave generator 22, the number of voltage releasing electrode pairs is unknown, different electrode pairs may be connected in series or in parallel, each electrode may be regarded as a resistor, and the resistance value is also X. Assuming that different electrode pairs are connected in series, the terminal a is the positive electrode of the power supply, and the voltage at the terminal D must be 1/2U as can be seen by voltage division. The voltage at the point B is different according to the difference of the electrode pairs of R1, when R1 is a pair of electrodes, the voltage at the point B is 1/2U, when R1 is two pairs of electrodes, the voltage at the point B is 1/3U, when R1 is three pairs of electrodes, the voltage at the point B is 1/4U, and so on. Then, the ADC 15 can detect the voltage difference Δ U between two points of BD, which is a characteristic of the number of electrode pairs, so as to know how many pairs of electrodes R1 are formed, and the table 2 can be referred to for the corresponding relationship of specific electrode number, voltage difference Δ U and model.

Table 2:

electrode pair number	Voltage difference DeltaU	Model number
				1	1/2-1/2＝0	a
2	1/2-1/3＝1/6	b
			3	1/2-1/4＝1/4	c
4	1/2-1/5＝3/10	d

It can be seen that the main control module 11 sends a test signal to the pressure wave generator 22 through the DAC 14 metal wire, and the ADC 15 is used for detecting a feedback signal fed back from the pressure wave generator 22. The main control module 11 detects electrical characteristic information, such as an impedance value, of the pressure wave generator 22 in the pressure wave balloon according to the test signal transmitted and received by the metal wire. The characteristic information is compared with the characteristic parameters of the pressure wave balloon catheter 20 of different models stored in the high-voltage pulse power supply host 10, and the corresponding type of the pressure wave balloon catheter 20 is identified.

Meanwhile, the model of the pressure wave saccule conduit 20 read out from the Flash chip by the main control module 11 is compared with the model of the pressure wave saccule conduit 20 obtained from the characteristic parameter test result of the pressure wave saccule conduit 20 in the test process. If the two models are consistent, the type identification of the pressure wave balloon catheter 20 is judged to be correct. If the two models are not identical, an alarm signal is output, requesting verification of the information on the type of the pressure wave balloon catheter 20 or replacement of the pressure wave balloon catheter 20.

Further, after the determined model of the pressure wave balloon catheter 20 is obtained, the main control module 11 is further configured to control the pulse power supply module 13 to release the high-voltage pulse signal adapted to the model to drive the pressure wave generator 22 to generate the target pressure wave according to the determined model of the pressure wave balloon catheter 20.

Specifically, the main control module 10 automatically sets the working parameters of the high-voltage pulse power supply host 10, and matches the working modes or output energies, such as high-voltage pulse amplitude, pulse width, frequency, pulse number, required by different types of the pressure wave balloon catheter 20. The operation mode is simple and reliable, and errors can be avoided.

The output voltage amplitude, the pulse broadband and the frequency of the treatment device for angioplasty, which is provided by the application, need to be dynamically adjustable, the output voltage range is 100V-5000V or higher, and the pulse broadband is less than 1 ms.

Referring to fig. 3, an embodiment of the present application further provides a method for identifying a pressure wave balloon catheter, including:

step S110, sending a test signal to the pressure wave saccule catheter;

step S120, obtaining a feedback signal fed back by the pressure wave saccule conduit responding to the test signal;

step S130, obtaining corresponding characteristic parameters according to the feedback signals to determine a first model of the pressure wave saccule catheter;

step S140, reading a model identifier pre-stored in the pressure wave saccule catheter, and determining a second model of the pressure wave saccule catheter according to the model identifier;

and S150, comparing the first model with the second model, determining the model of the pressure wave saccule conduit if the first model and the second model are consistent, and sending a warning signal if the first model and the second model are inconsistent.

According to the identification method of the pressure wave saccule conduit, the pre-stored model identification of the pressure wave saccule conduit can be directly read, a model can be determined according to the detection result by sending the test signal, the real model of the pressure wave saccule conduit can be determined by self in a double detection and comparison mode, the model of the pressure wave saccule conduit does not need to be manually distinguished, the required working mode or the required output energy does not need to be input and set, the operation is simple, and the distinguishing and operation errors are avoided; in addition, the mode of double detection and comparison for confirming the model analogy can also detect whether the product is a fake and fake product with a tampered pre-stored model identifier, and the safety of the treatment device is improved.

As shown in fig. 4, a Marx Generator (Marx Generator) is a device that is charged in parallel by n stages of capacitors and then discharged in series, thereby realizing the generation of high voltage pulses by a low voltage dc power supply, and the Marx Generator has transistors, in the stage of charging in parallel the capacitors, the transistors are all turned off, the low voltage dc power supply outputs current to the capacitors of each stage, so that the voltage of the capacitors of each stage reaches the voltage V1 of the low voltage dc power supply; and in the capacitor series discharge stage, all the transistors are conducted, the capacitors in each stage are connected in series through the conducted transistors, high-voltage pulse discharge is carried out on the load, and the discharge voltage is the sum (n × V1) of the voltages of all the capacitors. As can be seen from fig. 1, in the stage of discharging the capacitors in series, the transistors at each stage are connected in series, and the voltage difference between the gate and the source of each two adjacent transistors is initially V1, and the voltage difference gradually decreases as the capacitors at each stage discharge, that is, the gate-source voltage of each transistor is floating, so that it cannot be ensured that the transistors at each stage are kept on during the discharging of the capacitors in series, and it is easy to cause that the discharging cannot be continued due to the disconnection of a certain transistor during the discharging of the capacitors in series, and thus the output of the high-voltage pulse fails, and the stability and reliability are reduced.

As shown in fig. 5, an embodiment of the present application further provides a driving circuit in the pulse power supply module 13, where the driving circuit is configured to control the corresponding capacitors in the marx generator 100 to perform parallel charging and serial discharging.

The driving circuit includes an isolation circuit 110 and a main control circuit 120, and the main control circuit 120 is the same as the main control module 11 of fig. 1 and 2.

The isolation circuit 110 is connected to the gate and the source of the transistor, and the main control circuit 120 is connected to the isolation circuit 110.

When the main control circuit 120 detects that the corresponding capacitors in the mackle generator 100 are discharged in series, the isolation circuit 110 is controlled to be conducted.

Specifically, the main control circuit 120 is connected to the marx generator 100, and detects the pressing state of the marx generator 100.

The isolation circuit 110 receives the target electrical signal V when it is turned on, and outputs a driving signal CTR to between the gate and the source of the transistor to keep the transistor turned on.

Specifically, the main control circuit 120 outputs a control signal to the isolation circuit 110, so as to correspondingly control the isolation circuit 110 to be turned on or off. The control signal is a level signal, and when the control signal is at a high level, the isolation circuit 110 is turned on, so as to output a driving signal CTR to a position between the gate and the source of the transistor, so that the gate-source voltage of the transistor is greater than the turn-on voltage of the transistor, and the transistor is kept on, so that the capacitor in the marx generator 100 keeps being in series discharge. When the control signal is low, the isolation circuit 110 is turned off and the transistor is turned off, at which time the capacitors in the Marx generator 100 remain discharged in parallel.

The isolation circuit 110 is also used for isolating the main control circuit 120 from the transistor, the voltage difference between the control signal output by the main control circuit 120 and the voltage of the transistor during operation is up to 3000 v, the main control circuit 120 in the low-voltage area and the transistor in the high-voltage area are effectively isolated by the isolation circuit 110, and the overall safety of the circuit is greatly improved.

When the capacitors of the stages in the Marx generator 100 are in series discharge, the driving circuit outputs the driving signal CTR under the condition that the gate-source voltage of the transistor is floated, so that the transistor is kept on, and the stability and the reliability of the Marx generator 100 during discharge are improved. The Marx generator 100 is mainly used as a high-voltage pulse generation module in a shock wave host machine for treating calcified heart valves.

Referring to fig. 6, a schematic block diagram of a driving circuit of a transistor according to another embodiment of the present disclosure is shown, for convenience of description, only the parts related to the embodiment are shown, and the details are as follows:

in an alternative embodiment, the driving circuit further includes a power supply circuit 130, i.e., a power supply.

The power supply circuit 130 is connected to the isolation circuit 110. The power supply circuit 130 receives the initial electrical signal V0, converts the initial electrical signal V0 into the target electrical signal V, and outputs the target electrical signal V to the isolation circuit 110.

Specifically, the initial electrical signal V0 is a low-voltage dc electrical signal, and the power supply circuit 130 outputs the target electrical signal V after performing voltage boosting, rectification and filtering on the initial electrical signal V0.

Referring to fig. 7, a schematic diagram of a unit structure of the power supply circuit 130 in the driving circuit shown in fig. 6 is shown, for convenience of description, only the parts related to the present embodiment are shown, and the following details are described:

in an alternative embodiment, the power supply circuit 130 includes a transformer circuit 131, a rectifier circuit 132, and a filter circuit 133.

The transformer circuit 131 is connected to the rectifying circuit 132, the rectifying circuit 132 is connected to the filter circuit 133 and the isolation circuit 110, and the filter circuit 133 is connected to the rectifying circuit 132.

The transformer circuit 131 receives the initial electrical signal V0 and performs a voltage boosting process on the initial electrical signal V0.

The rectifier circuit 132 rectifies the boosted initial electric signal V0.

The filter circuit 133 performs filtering processing on the rectified initial electrical signal V0 to obtain a target electrical signal V, and outputs the target electrical signal V to the isolation circuit 110.

The power supply circuit 130 boosts, rectifies and filters the initial electrical signal V0 through the transformer circuit 131, and the output target electrical signal V does not contain interference clutter, so that the overall stability and reliability of the circuit are improved.

Referring to fig. 8, a schematic block diagram of a driving circuit of a transistor according to another embodiment of the present disclosure is shown, for convenience of description, only the parts related to the embodiment are shown, and the details are as follows:

in an alternative embodiment, the driving circuit further includes a unidirectional conducting circuit 140.

The unidirectional circuit 140 is connected to the power supply circuit 130 and the isolation circuit 110.

The unidirectional conducting circuit 140 transmits the target electrical signal V to the isolation circuit 110 in a unidirectional way.

By additionally arranging the unidirectional conduction circuit 140, the current backflow is avoided, the target electrical signal V is transmitted from the power supply circuit 130 to the isolation circuit 110 in a single direction, and the overall safety of the circuit is improved.

Referring to fig. 9, an exemplary schematic circuit diagram of a driving circuit of a transistor according to an embodiment of the present disclosure shows only a portion related to the embodiment for convenience of description, and is detailed as follows:

in an alternative embodiment, the isolation circuit 110 includes an optocoupler U4, a first resistor R62, a second resistor R64, and a third resistor R63.

The optical coupler U4 is internally provided with a light emitting diode and a phototriode;

the anode of the light emitting diode is connected with the main control circuit 120, the cathode of the light emitting diode is grounded, and the collector of the phototriode receives the target electric signal V; the emitter of the phototransistor is connected to the first end of the first resistor R62, the second end of the first resistor R62, the first end of the second resistor R64 and the first end of the third resistor R63 are connected in common, the second end (Q _ G) of the second resistor R64 is connected to the gate of the transistor, and the second end (Q _ E) of the third resistor R63 is connected to the source of the transistor.

The isolation circuit 110 is connected to the main control circuit 120 through the anode of the optical coupler U4, and when receiving the control signal output by the main control circuit 120, the light emitting diode emits light, so that the phototransistor is turned on, and receives the target electrical signal V, so that the driving signal CTR is output between the gate and the source of the transistor, and the transistor is ensured to be turned on. The main control circuit 120 and the transistor are effectively isolated by the optical coupler U4, and the stability and the safety of the circuit are improved. The optical coupler U4 isolates the main control circuit 120 from the transistor, the voltage difference between the control signal output by the main control circuit 120 and the working voltage of the transistor is up to 3000V, the main control circuit 120 in the low-voltage area and the transistor in the high-voltage area are effectively isolated through the optical coupler U4, and the overall safety of the circuit is greatly improved.

In an alternative embodiment, the transformer circuit 131 includes an isolation transformer T2.

The primary coil of the isolation transformer T2 is connected to the initial electrical signal V0, and the secondary coil of the isolation transformer T2 is connected to the rectifying circuit 132.

The isolation transformer T2 is used for supplying the target electric signal V to the optocoupler U4 under the condition that the gate-source voltage of the transistor is floated, so that the driving voltage output by the isolation circuit 110 cannot cause power failure of the optocoupler U4 due to the fact that the source voltage of the transistor is raised to be kilovolt during the serial discharge of the capacitor of the Marx generator 100.

In an alternative embodiment, the rectifying circuit 132 is implemented by using a rectifying bridge D43, and a first input end and a second input end of the rectifying bridge D43 are both connected to the transforming circuit 131; the first output terminal and the second output terminal of the rectifier bridge D43 are connected to the filter circuit 133.

The rectifying circuit 132 is realized by adopting a conventional rectifying bridge D43, and has the advantages of simple composition structure, easy realization and low cost.

In an alternative embodiment, the filter circuit 133 includes a first capacitor C42.

The first end and the second end of the first capacitor C42 are both connected to the rectifying circuit 132, and the first end of the first capacitor C42 is connected to the isolation circuit 110.

Interference noise waves are filtered through the first capacitor C42, and the stability of the whole circuit is improved.

In an alternative embodiment, unidirectional circuit 140 optionally includes diode D42.

The anode of the diode D42 is connected to the power supply circuit 130, and the cathode of the diode D42 is connected to the isolation circuit 110.

By utilizing the unidirectional conduction characteristic of the diode D42, the target power supply signal is transmitted from the power supply circuit 130 to the isolation circuit 110 in a single direction, thereby avoiding current backflow and improving the overall stability and safety of the circuit.

As shown in fig. 9, the driving circuit may further include a resistor R66 connected in series between the cathode of the diode D42 and the collector of the phototransistor in the optocoupler U4 for limiting current. In addition, the above-mentioned driving circuit may further include a second capacitor C41, and two ends of the second capacitor C41 are respectively connected to a collector of the phototransistor in the optocoupler U4 and a second end of the third resistor R63 for filtering.

In an optional embodiment, the main control circuit 120 is implemented by a single-chip MCU. The single-chip microcomputer MCU detects whether the capacitor in the Marx generator 100 is in series discharge or not, and when the single-chip microcomputer MCU detects that the corresponding capacitor in the Marx generator 100 is in series discharge, the isolation circuit 110 is controlled to be conducted.

As shown in fig. 10, an embodiment of the present application further provides a power supply of the pulse power supply module 13, specifically a digital switching power supply, which includes a main control module 11, a driving module 220, an inverter circuit 230, a boost circuit 240, and a rectifying circuit 250.

The digital switching power supply is used for providing power supply voltage for the Marx generator 100, the Marx generator 100 is connected with a pressure wave generator arranged in the balloon catheter through a metal lead, and the Marx generator 100 is used for releasing a high-voltage pulse signal so as to excite the pressure wave generator to generate pressure waves.

The main control module 11 is connected to the driving module 220, the driving module 220 is connected to the inverter circuit 230, the inverter circuit 230 is connected to the boost circuit 240, the boost circuit 240 is connected to the rectifying circuit 250, and the rectifying circuit 250 is connected to the marx generator 100.

The main control module 11 receives the regulation signal, correspondingly regulates the duty ratio of the pulse control signal according to the regulation signal, and outputs the regulation signal after the regulation is completed so as to regulate the voltage of the target power supply signal.

Specifically, the pulse control signal includes a first sub-pulse control signal TF _ a and a second sub-pulse control signal TF _ B, and the main control module 11 respectively adjusts duty ratios of the first sub-pulse control signal TF _ a and the second sub-pulse control signal TF _ B, and outputs the adjusted duty ratios to adjust the voltage of the target power supply signal.

Specifically, the first sub-Pulse control signal TF _ a and the second sub-Pulse control signal TF _ B are both Pulse Width Modulation (PWM) signals. The regulation and control signal can be input manually, or the type of the accessed device can be identified by the main control module 11, and the regulation and control signal can be taken out according to the type of the accessed device.

Specifically, the first sub-pulse control signal TF _ a and the second sub-pulse control signal TF _ B are opposite in level at any time, and when the first sub-pulse control signal TF _ a is 0, the second sub-pulse control signal TF _ B is 1; on the contrary, when the first sub-pulse control signal TF _ a is 1, the second sub-pulse control signal TF _ B is 0.

The driving module 220 outputs a driving signal when receiving the pulse control signal.

Specifically, the driving signal includes a first sub driving signal and a second sub driving signal. The driving module 220 outputs a first sub-driving signal when receiving the first sub-pulse control signal TF _ a, and outputs a second sub-driving signal when receiving the second sub-pulse control signal TF _ B.

The inverter circuit 230 receives the initial power supply signal VCC and correspondingly inverts the initial power supply signal VCC into a square wave signal according to the driving signal.

Specifically, the initial power supply signal VCC is a 12V dc signal.

The voltage boosting circuit 240 performs voltage boosting processing on the square wave signal.

Specifically, the boosting ratio of the boosting circuit 240 is 1:10, that is, the boosting circuit 240 may amplify the received signal by 10 times and output the amplified signal.

The rectifying circuit 250 rectifies the square wave signal after the voltage boosting process and outputs a target power supply signal to the marx generator 100, so that the marx generator 100 is charged. The target power supply signal is used as the charging voltage of the marx generator 100, and continuous dynamic adjustment of the charging voltage can be realized by controlling the duty ratio of the pulse control signal.

According to the digital switching power supply, the duty ratio of the output pulse control signal is correspondingly adjusted through the main control module 11 according to the regulation signal, the driving module 220 correspondingly outputs the driving signal according to the pulse control signal, the inverter circuit 230 correspondingly inverts the initial power supply signal VCC into a square wave signal, the booster circuit 240 boosts the square wave signal and outputs the square wave signal to the rectifying circuit 250 for rectification, the target power supply signal is obtained and output, the voltage of the target power supply signal is dynamically and continuously adjusted, and the digital switching power supply is high in practicability.

Referring to fig. 11, in an alternative embodiment, the digital switching power supply further includes a dc source 160.

The dc source 160 is connected to the driving module 220 and the boost circuit 240, supplies power to the boost circuit 240, and outputs an initial power supply signal VCC to the driving module 220.

Specifically, the initial power supply signal VCC is a 12V dc signal.

Optionally, the direct current source 160 is implemented by a lithium battery Vbat, a positive electrode of the lithium battery Vbat is connected to the driving module 220 and the boost circuit 240, a negative electrode of the lithium battery Vbat is grounded, and the lithium battery Vbat can be charged after being detached.

Referring to fig. 12, in an alternative embodiment, the digital switching power supply further includes a filter circuit 170.

The filter circuit 170 is connected to a rectifier circuit 250.

The filter circuit 170 performs a filtering process on the target power supply signal.

Clutter interference signals in the target power supply signals are filtered through the filter circuit 170, and the stability of the whole circuit is improved.

Referring to fig. 13, in an alternative embodiment, the driving module 220 includes a first switch tube, a second switch tube, a first resistor R11, a second resistor R12, a third resistor R13, and a fourth resistor R14.

The first resistor R11 is connected in series between the controlled end of the first switch tube and the main control module 11, and the second resistor R12 is connected in series between the controlled end of the second switch tube and the main control module 11; a first end of the third resistor R13 is connected to the initial power supply signal VCC, and a node at which a second end of the third resistor R13 and the input end of the first switching tube are connected in common is connected to the inverter circuit 230; a first end of the fourth resistor R14 is connected to the initial power supply signal VCC, and a node at which a second end of the fourth resistor R14 and the input end of the second switching tube are connected in common is connected to the inverter circuit 230; the output end of the first switch tube and the output end of the second switch tube are grounded.

Specifically, a first end of the third resistor R13 and a first end of the fourth resistor R14 are both used for receiving the initial power supply signal VCC.

Optionally, the first switching tube is implemented by using a first NPN triode Q3, and the second switching tube is implemented by using a second NPN triode Q4;

the base electrode, the collector electrode and the emitter electrode of the first NPN triode Q3 are respectively used as the controlled end, the input end and the output end of the first switching tube; the base electrode, the collector electrode and the emitter electrode of the second NPN triode Q4 are respectively used as the controlled end, the input end and the output end of the second switching tube.

Specifically, the first resistor R11 is connected in series to the base of the first NPN transistor Q3, and the second resistor R12 is connected in series to the base of the second NPN transistor Q4, so as to set appropriate base currents for the first NPN transistor Q3 and the second NPN transistor Q4, respectively.

Specifically, a first end of the first resistor R11 and a first end of the second resistor R12 are respectively connected to the first sub-pulse control signal TF _ a and the second sub-pulse control signal TF _ B. Moreover, the first sub-pulse control signal TF _ a and the second sub-pulse control signal TF _ B have opposite levels at any time, when the level of the first sub-pulse control signal TF _ a is 0, the level of the second sub-pulse control signal TF _ B is 1, the first NPN transistor Q3 is turned off, and the second NPN transistor Q4 is turned on; when the level of the first sub-pulse control signal TF _ a is 1, the level of the second sub-pulse control signal TF _ B is 0, the first NPN transistor Q3 is turned on, and the second NPN transistor Q4 is turned off.

In an alternative embodiment, the inverter circuit 230 includes a first transistor Q1 and a second transistor Q2.

The controlled terminal of the first transistor Q1 and the controlled terminal of the second transistor Q2 are both connected to the driving module 220, the first terminal of the first transistor Q1 and the first terminal of the second transistor Q2 are both connected to the voltage boost circuit 240, and the second terminal of the first transistor Q1 and the second terminal of the second transistor Q2 are both connected to ground.

Specifically, when the first NPN transistor Q3 is turned off, the first transistor Q1 is turned on; when the first NPN transistor Q3 is turned on, the first transistor Q1 is turned off; when the second NPN transistor Q4 is turned off, the second transistor Q2 is turned on; when the second NPN transistor Q4 is turned on, the second transistor Q2 is turned off.

Optionally, the first Transistor Q1 and the second Transistor Q2 are both Insulated Gate Bipolar Transistors (IGBTs).

In an alternative embodiment, the boosting circuit 240 is implemented by using a push-pull high frequency transformer T3.

The push-pull high-frequency transformer T3 includes a primary winding, a secondary winding, and a center tap located on the primary side, wherein the first end and the second end of the primary winding are connected to the inverter circuit 230, and the center tap is connected to the initial power supply signal VCC; the first and second ends of the secondary winding are connected to a rectifying circuit 250.

Specifically, the boost ratio of the push-pull high-frequency transformer T3 is 1:10, that is, the push-pull high-frequency transformer T3 may amplify the received signal by 10 times and output the amplified signal.

In an optional embodiment, the main control module 11 is implemented by any one of a single chip, an Advanced RISC Machine (ARM), or a Digital Signal Processor (DSP).

In an alternative embodiment, the rectifier circuit is implemented by using a rectifier bridge BD1, a first input terminal and a first input terminal of the rectifier bridge BD1 are respectively connected to a first terminal and a second terminal of the secondary winding, a positive output terminal of the rectifier bridge BD1 is connected to the marx generator 100, and a negative output terminal of the rectifier bridge BD1 is grounded.

In an alternative embodiment, the filter circuit 170 is implemented by using a capacitor C1, a first terminal of the capacitor C1 is connected to the positive output terminal of the rectifier bridge BD1, and a second terminal of the capacitor C1 is grounded.

The digital switching power supply comprises a main control module 11 for correspondingly adjusting duty ratios of a first sub-pulse control signal TF _ A and a second sub-pulse control signal TF _ B according to a regulation signal, a driving module 220 for correspondingly outputting a first sub-driving signal and a second sub-driving signal according to the first sub-pulse control signal TF _ A and the second sub-pulse control signal TF _ B, an inverter circuit 230 for correspondingly inverting an initial power supply signal VCC into a square wave signal, a booster circuit 240 for boosting the square wave signal and outputting the square wave signal to a rectifying circuit 250 for rectification to obtain a target power supply signal and outputting the target power supply signal, the Marx generator 100 is charged, the Marx generator 100 supplies power to the pressure wave generator, the pressure wave generator is driven to output pressure waves, the voltage of a target power supply signal is dynamically and continuously adjusted, the requirement of the Marx generator 100 on the charging voltage is met, and the practicability is high.

The duty ratio of the output first sub-pulse control signal TF _ A and the duty ratio of the output second sub-pulse control signal TF _ B are correspondingly adjusted through the main control module 11 according to the regulation signal, then the driving module 220 correspondingly outputs a first sub-driving signal and a second sub-driving signal according to the first sub-pulse control signal TF _ A and the second sub-pulse control signal TF _ B, the initial power supply signal VCC is correspondingly inverted into a square wave signal by the inverter circuit 230, the square wave signal is boosted by the booster circuit 240 and then output to the rectifier circuit 250 for rectification, a target power supply signal is obtained and output to the Marx generator 100 for charging the Marx generator 100, the Marx generator 100 after charging releases a high-voltage pulse signal, and therefore the pressure wave generator is driven to generate and output pressure waves. Therefore, the duty ratio of the pulse control signal is adjusted, the voltage of the target power supply signal is dynamically and continuously adjusted, the requirement of the Marx generator on the charging voltage is met, the practicability is high, and the problem that the voltage output to the Marx generator cannot be dynamically adjusted in the traditional medical high-voltage pulse power supply is solved.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims

1. A method of identifying a pressure wave balloon catheter, comprising:

sending a test signal to the pressure wave balloon catheter;

2. The method for identifying a pressure wave balloon catheter according to claim 1, wherein the obtaining of the characteristic parameter fed back by the pressure wave balloon catheter in response to the test signal is obtaining of the characteristic parameter fed back by a pressure wave generator of the pressure wave balloon catheter in response to the test signal.

3. The method of identifying a pressure wave balloon catheter of claim 1 or 2, wherein the test signal comprises a voltage signal and the characteristic parameter comprises an impedance value.

4. A treatment device for angioplasty, comprising a high-voltage pulse power supply main unit and a pressure wave balloon catheter which communicate with each other, wherein: the high-voltage pulse power supply host comprises a main control module, a display module and a pulse power supply module for releasing a high-voltage pulse signal; the pressure wave balloon catheter comprises a storage module, a pressure wave generator for generating pressure waves and a detection module for generating and detecting characteristic parameters of the pressure wave generator;

the main control module is used for sending a test signal to the detection module, receiving a feedback signal fed back by the detection module in response to the test signal, and obtaining the characteristic parameter according to the feedback signal, and the main control module is also used for determining a first model of the pressure wave saccule conduit according to the characteristic parameter;

5. The therapeutic apparatus according to claim 4, wherein the main control module is further configured to control the pulse power supply module to release a high-voltage pulse signal adapted to the determined model of the pressure wave balloon catheter to drive the pressure wave generator to generate the target pressure wave according to the determined model of the pressure wave balloon catheter.

6. The treatment apparatus of claim 4, wherein the detection module comprises a first voltage divider, a second voltage divider, and a third voltage divider, the first voltage divider, the second voltage divider, the third voltage divider, and the pressure wave generator being connected in a Wheatstone bridge.

7. The therapeutic device of claim 6 wherein said first voltage divider, said second voltage divider, and said third voltage divider are of uniform resistance.

8. The therapeutic apparatus as claimed in claim 6, wherein the high voltage pulse power supply host further comprises a digital-to-analog converter and an analog-to-digital converter, the digital-to-analog converter is used for converting the test signal outputted from the main control module into a voltage signal to be applied to two opposite connection points of the Wheatstone bridge, and the analog-to-digital converter is used for converting the voltages of the other two opposite connection points of the Wheatstone bridge into digital signals to be inputted to the main control module.

9. The treatment apparatus of claim 8, wherein the main control module is further configured to determine the first model by determining an impedance value obtained from the digital signal and determining a number of electrode pairs of the pressure wave generator based on the impedance value.

10. A power supply host used for angioplasty is used for butting a pressure wave saccule catheter and is characterized by comprising a main control module, a display module and a pulse power supply module used for releasing a high-voltage pulse signal; the pressure wave saccule catheter comprises a storage module and a pressure wave generator for generating pressure waves, wherein the main control module is used for reading a model identifier pre-stored in the storage module and determining a first model of the pressure wave saccule catheter according to the model identifier, and the pressure wave saccule catheter further comprises a detection module for generating and detecting characteristic parameters of the pressure wave generator;