CN111956936B - Pressure wave balloon catheter identification method and treatment device for angioplasty - Google Patents
Pressure wave balloon catheter identification method and treatment device for angioplasty Download PDFInfo
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Abstract
The application is applicable to the technical field of medical instruments, and provides a pressure wave balloon catheter identification method and a treatment device for angioplasty, wherein the pressure wave balloon catheter identification method comprises a high-voltage pulse power supply host and a pressure wave balloon 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 balloon catheter, receiving characteristic parameters fed back by the detection module in response to the test signal, and determining a first model of the pressure wave balloon catheter according to the characteristic parameters; the main control module is also used for reading the model identification prestored in the storage module of the pressure wave balloon catheter, determining the second model of the pressure wave balloon catheter according to the model identification, comparing, and determining the model if the model is consistent with the second model. The model of the pressure wave balloon catheter does not need to be judged manually, the working mode or the output energy required by input setting does not need to be identified, the operation is simple, and the judgment and the operation error are avoided.
Description
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 host for angioplasty.
Background
In recent years, a type of electrohydraulic lithotripsy based on the high-pressure underwater discharge technique has been used by clinicians to destroy calcified deposits or stones in the urethra or biliary tract, and therefore, the high-pressure underwater discharge technique can also be used to destroy calcified plaque in the vessel wall. One or several pairs of discharge electrodes are placed in a balloon used for percutaneous balloon dilation angioplasty (Percutaneous transluminal angioplasty, PTA) to form a set of pressure wave generator devices, and the electrodes are then connected to a high voltage pulse power supply host at the other end of the balloon dilation catheter by connectors. When the balloon is placed at a calcified lesion in a blood vessel, the system causes the pressure wave generator to release pressure waves by applying high-voltage pulses, which can selectively destroy calcified plaque in the vessel wall while effectively avoiding damage to the vessel wall.
However, in clinical intervention operation, a clinician needs to select pressure wave balloon catheters with different diameters according to different sizes of therapeutic blood vessels, and also needs to set a required working mode or output energy according to different pressure wave balloon catheter types on a high-voltage pulse power supply host, so that the operation is complex and error is easy.
Disclosure of Invention
To overcome the problems in the related art, embodiments of the present application provide a pressure wave balloon catheter identification method and a treatment device for angioplasty.
The application is realized by the following technical scheme:
in a first aspect, embodiments of the present application provide a pressure wave balloon catheter identification method, comprising:
transmitting 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 pre-stored model mark in the pressure wave balloon catheter, and determining a second model of the pressure wave balloon catheter according to the model mark;
and comparing the first model with the second model, if the two models are consistent, determining the model of the pressure wave balloon catheter, and if the two models are inconsistent, sending out a warning signal.
In one embodiment, the characteristic parameter fed back by the pressure wave balloon catheter in response to the test signal is a characteristic parameter fed back by a pressure wave generator 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, embodiments of the present application provide a therapeutic device for angioplasty comprising a high voltage pulse power host and a pressure wave balloon catheter in communication 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 high-voltage pulse signals; 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, obtaining the characteristic parameters according to the feedback signal, and determining a first model of the pressure wave balloon catheter according to the characteristic parameters;
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 balloon catheter according to the model identification, comparing the first model with the second model, determining the model of the pressure wave balloon catheter if the two models are consistent, and sending out a warning signal if the two models 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 adapted to the determined model of the pressure wave balloon catheter to drive the pressure wave generator to generate a target pressure wave.
In one embodiment, the detection module comprises 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 first voltage divider, the second voltage divider and the third voltage divider have identical resistance values.
In one embodiment, the high-voltage pulse power supply host further includes a digital-to-analog converter and an analog-to-digital converter, wherein the digital-to-analog converter is used for converting a test signal output by the main control module into a voltage signal so as to load the voltage signal at two opposite connection points of the wheatstone bridge, and the analog-to-digital converter is used for converting voltages of the other two opposite connection points of the wheatstone bridge into a digital signal and inputting the digital signal 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 the impedance value obtained from the digital signal, 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 built out of the main control module
In a third aspect, embodiments of the present application provide a power host for angioplasty, for interfacing pressure wave balloon catheters, wherein: the power supply host comprises a main control module, a display module and a pulse power supply module for releasing high-voltage pulse signals; the pressure wave balloon catheter comprises a storage module and a pressure wave generator for generating pressure waves, wherein the main control module is used for reading model marks prestored in the storage module and determining a first model of the pressure wave balloon catheter according to the model marks, and the pressure wave balloon 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 balloon catheter according to the characteristic parameters; and comparing the first model with the second model, if the two models are consistent, determining the model of the pressure wave balloon catheter, and if the two models are inconsistent, sending out a warning signal.
Compared with the prior art, the embodiment of the application has the beneficial effects that:
according to the embodiment of the application, the model identification of the pressure wave balloon catheter prestored can be directly read, a model is determined according to the detection result by sending the test signal, the real model of the pressure wave balloon catheter can be determined by a double detection and comparison mode, the model of the pressure wave balloon catheter does not need to be judged manually, the working mode or the output energy required by input setting does not need to be recognized, the operation is simple, and the judgment and the operation error are avoided; in addition, the double detection and comparison mode can confirm the model analogy mode, and can detect whether the product is a fake and inferior commodity falsified by the prestored model mark, so that 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 disclosure.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required for the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a therapeutic device for angioplasty according to one embodiment of the present application;
FIG. 2A is a schematic 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 a detection module in the treatment apparatus for angioplasty shown in FIG. 1;
fig. 3 is a flow chart of a pressure wave balloon catheter identification method according to an embodiment of the present application.
FIG. 4 is a schematic diagram of the internal circuit structure 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 application.
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 configurations, 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 should 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 any and all possible combinations of one or more of the associated listed items, and includes such combinations.
As used in this specification and the appended claims, the term "if" may be interpreted as "when..once" or "in response to a determination" or "in response to detection" depending on the context. Similarly, the phrase "if a determination" or "if a [ described condition or event ] is detected" may be interpreted in the context of meaning "upon determination" or "in response to determination" or "upon detection of a [ described condition or event ]" or "in response to detection of a [ described condition or event ]".
In addition, in the description of the present application and the appended claims, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.
Reference in the 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 application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified 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 is generally composed of a high voltage pulse power supply main body 10 and a pressure wave balloon catheter 20 for treating and eliminating calcified plaque in a blood vessel wall so as to restore normal blood flow in the blood vessel. Typically, during clinical interventions, the clinician does not need to perform complex operations on the high voltage pulse power master 10, and only needs to select pressure wave balloon catheters 20 of different diameters according to the different sizes of the treatment vessels. Therefore, the high-voltage pulse power host 10 needs to realize high intelligence, can automatically identify the pressure wave balloon catheters 20 of different types connected to 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 pressure wave balloon catheters 20, and match the working modes or output energy required by different pressure wave balloon catheters 20 types, such as high-voltage pulse amplitude, pulse width, frequency, pulse number and the like.
Based on the above-described problems, the therapeutic device for angioplasty in the embodiments of the present application employs a high-voltage pulse power supply host 10 and a pressure wave balloon catheter 20 that communicate with each other using a serial peripheral interface (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 for releasing high-voltage pulse signals, wherein the main control module 11 comprises a singlechip and a peripheral circuit, the singlechip 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, detection information, alarm information, treatment information and the like of a treatment device, 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 transistors control the capacitors to carry out parallel charging and serial discharging under the control of the driving circuit so as to release the high-voltage pulse signals.
The pressure wave balloon catheter 20 comprises a memory module 21, a pressure wave generator 22 for generating pressure waves, and a detection module 23 for generating characteristic parameters of the pressure wave generator 22; the memory module 21 may be a Flash chip; the pressure wave generator 22 includes at least one pair of voltage-releasing electrodes connected to the Marx generator via a metal wire, and the pressure wave generator 22 is configured to generate and output pressure waves when receiving high-voltage pulses, and apply the pressure waves to calcified plaque.
In the embodiment of the present application, the main control module 11 is configured to send a test signal to the detection module 23, receive a feedback signal from the detection module 23 in response to the test signal, obtain a characteristic parameter according to the feedback signal, and determine a first model of the pressure wave balloon catheter 20 according to the characteristic parameter by the main control module 11; the main control module 11 is further configured to read the 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 two models are consistent, and send out a warning signal if the two models are inconsistent.
In one embodiment, the data format stored by the Flash chip is as shown in Table 1 below:
table 1:
| |
Field 2 | Field 3 | Field 4 |
| Conduit type | Manufacturer' s | Production lot | Catheter ID |
| 8-bit | 8-bit | 16-bit | 32-bit |
Referring to fig. 2A, in one embodiment, the detection module 23 includes a first voltage divider R2, a second voltage divider R3, and a third voltage divider R4, and 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 is connected with a common potential; the wheatstone bridge is provided with two other opposite connection points, one is used for outputting feedback signals, and the other end is connected with a common potential. In another embodiment, the detection module 23 includes a voltage divider, for example, the voltage divider may be formed by a plurality of resistors connected in series and parallel, and 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 is connected to the common potential, and the 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 host 23 further includes the ADC 15 and DAC 14, and the DAC 14 is used for converting the test signal output by the main control module 11 into a voltage signal to be loaded on the detection module 23, and the ADC 15 is used for converting 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, so as to calculate the impedance parameter of the pressure wave generator 22.
Referring to fig. 2A and 2B, for example, it is assumed 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 resistor, the resistance is known as X, R1 is the electrode impedance of the pressure wave generator 22, the number of pairs of voltage release electrodes is unknown, different pairs of electrodes can be connected in series or in parallel, and each electrode can be regarded as a resistor, and the resistance is also X. Assuming that different electrode pairs are connected in series, the A terminal is the positive electrode of the power supply, and the voltage of the D terminal is necessarily 1/2U according to the 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 detects the voltage difference Δu between the two points BD, which is a characteristic of the number of pairs of electrodes, so that it is known how many pairs of electrodes R1 are composed, and the correspondence between the specific number of electrodes, the voltage difference Δu, and the model can be referred to table 2.
Table 2:
| electrode pair number | Voltage difference | 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 via the DAC 14 metal wire, and the adc 15 is used to detect a feedback signal fed back from the pressure wave generator 22. The main control module 11 detects electrical characteristic information, such as impedance values, of the pressure wave generator 22 in the pressure wave balloon according to the test signals received and transmitted on the metal wire. The characteristic information is compared with characteristic parameters of pressure wave balloon catheters 20 of different types stored in the high-voltage pulse power supply host 10, and the corresponding pressure wave balloon catheter 20 type is identified.
Meanwhile, the pressure wave balloon catheter 20 model read out from the Flash chip by the main control module 11 is compared with the pressure wave balloon catheter 20 model obtained from the characteristic parameter test result of the pressure wave balloon catheter 20 in the test process. If the two models are identical, a determination is made that the type identification of the pressure wave balloon catheter 20 is correct. If the two models are not identical, an alarm signal is output requesting verification of the type information of the pressure wave balloon catheter 20 or replacement of the pressure wave balloon catheter 20.
Further, after obtaining the determined model of the pressure wave balloon catheter 20, the main control module 11 is further configured to control the pulse power module 13 to release a high-voltage pulse signal adapted to the determined model of the pressure wave balloon catheter 20 to drive the pressure wave generator 22 to generate a target pressure wave.
Specifically, the main control module 10 automatically sets working parameters of the high-voltage pulse power supply host 10, and matches working modes or output energy required by different pressure wave balloon catheter 20 models, such as high-voltage pulse amplitude, pulse width, frequency, pulse number and the like. The operation mode is simple and reliable, and no error occurs.
The output voltage amplitude, pulse broadband and frequency of the therapeutic device for the angioplasty are required to be dynamically adjustable, the output voltage range is 100V-5000V or higher, and the pulse broadband is smaller than 1ms.
Referring to fig. 3, an embodiment of the present application further provides a pressure wave balloon catheter identification method, including:
step S110, sending a test signal to the pressure wave balloon catheter;
step S120, obtaining a feedback signal fed back by the pressure wave balloon catheter in response to the test signal;
step S130, obtaining corresponding characteristic parameters according to the feedback signals to determine the first model of the pressure wave balloon catheter;
step S140, reading a pre-stored model mark in the pressure wave balloon catheter, and determining a second model of the pressure wave balloon catheter according to the model mark;
and step S150, comparing the first model with the second model, if the two models are consistent, determining the model of the pressure wave balloon catheter, and if the two models are inconsistent, sending out a warning signal.
In one embodiment, the characteristic parameter fed back by the pressure wave balloon catheter in response to the test signal is a characteristic parameter fed back by a pressure wave generator in response to the test signal.
In one embodiment, the test signal comprises a voltage signal and the characteristic parameter comprises an impedance value.
The pressure wave balloon catheter identification method can directly read the model identification prestored in the pressure wave balloon catheter, and can automatically determine the real model of the pressure wave balloon catheter by determining a model according to the detection result and a double detection and comparison mode through sending a test signal, so that the model of the pressure wave balloon catheter does not need to be manually judged, the working mode or the output energy required by input setting does not need to be identified, the operation is simple, and the judgment and the operation error are avoided; in addition, the double detection and comparison mode can confirm the model analogy mode, and can detect whether the product is a fake and inferior commodity falsified by the prestored model mark, so that the safety of the treatment device is improved.
As shown in fig. 4, a Marx Generator (Marx Generator) is a device that charges in parallel through n-stage capacitors and discharges in series, so as to generate high voltage pulses through a low voltage dc power supply, where the Marx Generator has transistors, and in the parallel charging stage of the capacitors, the transistors are all turned off, and the low voltage dc power supply outputs current to the capacitors at each stage, so that the voltage of each stage of capacitor reaches the voltage V1 of the low voltage dc power supply; in the capacitor series discharge stage, all the transistors are conducted, the capacitors of each stage are connected in series through the conducted transistors, high-voltage pulse discharge is conducted on a load, and the discharge voltage is the sum (n is V1) of voltages of all the capacitors. As can be seen from fig. 1, in the capacitor series discharge stage, 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 capacitor at each stage discharges, that is, the gate-source voltage of each transistor is floating, so that it is not guaranteed that the transistors at each stage remain on in the capacitor series discharge process, and it is easy to cause that the transistors at a certain stage cannot continue to discharge due to the turn-off of the transistors at a certain stage during the capacitor series discharge process, so that the output of high-voltage pulse fails, and stability and reliability are reduced.
As shown in fig. 5, the embodiment of the present application further provides a driving circuit in the pulse power module 13, where the driving circuit is used to control the parallel charging and the serial discharging of the corresponding capacitors in the markx generator 100.
The driving circuit includes an isolation circuit 110 and a main control circuit 120, and the main control circuit 120 and the main control module 11 of fig. 1 and 2 are the same component.
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 master control circuit 120 detects that the corresponding capacitor in the marx generator 100 is discharged in series, the isolation circuit 110 is controlled to conduct.
Specifically, the main control circuit 120 is connected to the marx generator 100, and detects a pressed state of the marx generator 100.
The isolation circuit 110 receives the target electrical signal V when turned on, and outputs a driving signal CTR between the gate and the source of the transistor to keep the transistor on.
Specifically, the main control circuit 120 outputs a control signal to the isolation circuit 110, so as to control the isolation circuit 110 to be turned on or off accordingly. 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 that the drive signal CTR is output 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 turned on, so that the capacitor in the marx generator 100 is kept in series discharge. When the control signal is low, the isolation circuit 110 turns off and the transistor turns off, at which time the capacitance in the Marx generator 100 remains discharged in parallel.
The isolation circuit 110 is further 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, and the transistors in the main control circuit 120 and the high voltage region of the low voltage region are effectively isolated by the isolation circuit 110, so that the overall safety of the circuit is greatly improved.
In the driving circuit, when the capacitors of each stage in the marx generator 100 are serially discharged, the driving signal CTR is output under the condition that the gate-source voltage of the transistor is floating, so that the transistor is kept on, and the stability and reliability of the marx generator 100 in discharging are improved. The Marx generator 100 acts primarily as a high voltage pulse generation module in the shockwave host for the treatment of 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 application is shown, for convenience of explanation, only the portions 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 same to the isolation circuit 110.
Specifically, the initial electrical signal V0 is a low-voltage dc electrical signal, and the power supply circuit 130 performs boosting, rectifying and filtering processes on the initial electrical signal V0 to output the target electrical signal V.
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 explanation, only the portions related to the present embodiment are shown in detail as follows:
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 rectifier circuit 132, the rectifier circuit 132 is connected to the filter circuit 133 and the isolation circuit 110, and the filter circuit 133 is connected to the rectifier circuit 132.
The voltage transformation circuit 131 receives the initial electric signal V0 and performs a voltage boosting process on the initial electric signal V0.
The rectifying circuit 132 rectifies the initial electric signal V0 after the boosting process.
The filter circuit 133 performs a filter process 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.
In the power supply circuit 130, the initial electric signal V0 is boosted, rectified and filtered by the transformer circuit 131, and the output target electric signal V does not contain interference clutter, so that the stability and reliability of the whole 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 application is shown, for convenience of explanation, only the portions related to the embodiment are shown, and the details are as follows:
in an alternative embodiment, the driving circuit further includes a unidirectional conductive circuit 140.
The unidirectional conduction circuit 140 is connected to the power supply circuit 130 and the isolation circuit 110.
By adding the unidirectional conduction circuit 140, current backflow is avoided, unidirectional transmission of the target electric signal V from the power supply circuit 130 to the isolation circuit 110 is ensured, 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 application is shown, for convenience of explanation, only the portions related to the embodiment are shown in detail 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 inside of the optical coupler U4 is 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 commonly connected, 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 optocoupler 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 electric 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 kept turned on. The optocoupler U4 effectively isolates the main control circuit 120 from the transistor, and improves the stability and safety of the circuit. The optocoupler 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 voltage of the transistor during operation is up to 3000V, the main control circuit 120 in a low-voltage region and the transistor in a high-voltage region are effectively isolated through the optocoupler U4, and the overall safety of the circuit is greatly improved.
In an alternative embodiment, transformer circuit 131 includes isolation transformer T2.
The primary winding of the isolation transformer T2 is connected to the initial electrical signal V0, and the secondary winding of the isolation transformer T2 is connected to the rectifying circuit 132.
The isolation transformer T2 solves the problem that the gate-source voltage of the transistor is floating, and provides the target electric signal V for the optocoupler U4, so that the driving voltage output by the isolation circuit 110 is ensured not to be invalid because the source voltage of the transistor is raised to be kilovolt during the series discharge of the capacitor by the marx generator 100.
In an alternative embodiment, the rectifying circuit 132 is implemented by a rectifying bridge D43, and a first input terminal and a second input terminal of the rectifying bridge D43 are 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 simple 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.
The interference clutter is filtered through the first capacitor C42, so that the overall stability of the circuit is improved.
In an alternative embodiment, the unidirectional conductive circuit 140 optionally includes a 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 one direction, so that current backflow is avoided, and the stability and safety of the whole circuit are improved.
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 current limiting. In addition, the driving circuit may further include a second capacitor C41, and two ends of the second capacitor C41 are respectively connected to the collector of the phototransistor in the optocoupler U4 and the second end of the third resistor R63 for filtering.
In an alternative embodiment, the master control circuit 120 is implemented by a single-chip microcomputer MCU. The singlechip MCU detects whether the capacitors in the Marx generator 100 are discharged in series, and when the singlechip MCU detects that the corresponding capacitors in the Marx generator 100 are discharged in series, the isolation circuit 110 is controlled to conduct.
As shown in fig. 10, the embodiment of the present application further provides a power supply of the pulse power 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 built in the balloon catheter through a metal wire, 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 adjusts the duty ratio of the pulse control signal according to the regulation signal, and outputs the pulse control signal after the adjustment is completed so as to adjust 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 adjusts duty ratios of the first sub-pulse control signal tf_a and the second sub-pulse control signal tf_b, respectively, and outputs the duty ratios after the adjustment is completed, so as 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 pulse width modulated signals (Pulse Width Modulation, PWM). The regulation signal can be input manually, or the main control module 11 can identify the type of the accessed device, and correspondingly regulate and take out the regulation signal 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 at opposite levels 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; conversely, 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 accordingly 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 electrical signal.
The booster circuit 240 boosts the square wave signal.
Specifically, the boosting ratio of the boosting circuit 240 is 1:10, that is, the boosting circuit 240 can amplify the received signal by 10 times and output the amplified signal.
The rectifying circuit 250 rectifies the boosted square wave signal and outputs a target power supply signal to the marx generator 100 to charge the marx generator 100. The target power supply signal is used as the charging voltage of the Marx generator 100, and the duty ratio of the pulse control signal can be controlled to realize continuous dynamic adjustment of the charging voltage.
According to the digital switching power supply, the main control module 11 correspondingly adjusts the duty ratio of the output pulse control signal 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 boosted signal to the rectifying circuit 250 for rectification, the target power supply signal is obtained and output, the dynamic continuous adjustment of the voltage of the target power supply signal is realized, 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, and 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 electrical signal.
Optionally, the dc source 160 is implemented by using a lithium battery Vbat, where a positive electrode of the lithium battery Vbat is connected to the driving module 220 and the boost circuit 240, and a negative electrode of the lithium battery Vbat is grounded, and the lithium battery Vbat can be charged after being disassembled.
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 the rectifier circuit 250.
The filter circuit 170 performs a filter 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 switching tube, a second switching 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 switching tube and the main control module 11, and the second resistor R12 is connected in series between the controlled end of the second switching tube and the main control module 11; the first end of the third resistor R13 is connected with an initial power supply signal VCC, and the node, which is commonly connected with the second end of the third resistor R13 and the input end of the first switching tube, is connected with the inverter circuit 230; the first end of the fourth resistor R14 is connected with an initial power supply signal VCC, and the node, which is commonly connected with the second end of the fourth resistor R14 and the input end of the second switching tube, is connected with the inverter circuit 230; the output end of the first switching tube and the output end of the second switching tube are grounded.
Specifically, the first end of the third resistor R13 and the first end of the fourth resistor R14 are both used for accessing the initial power supply signal VCC.
Optionally, the first switching tube is implemented by a first NPN triode Q3, and the second switching tube is implemented by 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 a controlled end, an input end and an output end of the first switching tube; the base, collector and emitter of the second NPN transistor Q4 are respectively used as the controlled terminal, the input terminal and the output terminal of the second switching transistor.
Specifically, the first resistor R11 is connected in series to the base of the first NPN triode Q3, and the second resistor R12 is connected in series to the base of the second NPN triode Q4, so as to set appropriate base currents for the first NPN triode Q3 and the second NPN triode Q4, respectively.
Specifically, the first end of the first resistor R11 and the 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. 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 end of the first transistor Q1 and the controlled end of the second transistor Q2 are both connected to the driving module 220, the first end of the first transistor Q1 and the first end of the second transistor Q2 are both connected to the boost circuit 240, and the second end of the first transistor Q1 and the second end of the second transistor Q2 are grounded.
Specifically, when the first NPN transistor Q3 is turned off, the first transistor Q1 is turned on; when the first NPN triode Q3 is turned on, the first transistor Q1 is turned off; when the second NPN triode 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 insulated gate bipolar transistors (Insulated Gate Bipolar Transistor, IGBTs).
In an alternative embodiment, the boost circuit 240 described above is implemented using a push-pull high frequency transformer T3.
The push-pull high-frequency transformer T3 comprises a primary winding, a secondary winding and a center tap positioned on the primary side, wherein a first end and a second end of the primary winding are connected with the inverter circuit 230, and the center tap is connected with an 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 can amplify the received signal 10 times and output the amplified signal.
In an alternative embodiment, the main control module 11 is implemented by any one of a single-chip microcomputer, an advanced reduced instruction microprocessor (Advanced RISC Machines, ARM) or a digital signal processor (Digital Signal Processing, DSP).
In an alternative embodiment, the rectifying circuit is implemented by using a rectifying bridge BD1, where a first input end and a first input end of the rectifying bridge BD1 are respectively connected to a first end and a second end of the secondary winding, a positive output end of the rectifying bridge BD1 is connected to the marx generator 100, and a negative output end of the rectifying bridge BD1 is grounded.
In an alternative embodiment, the filter circuit 170 is implemented by using a capacitor C1, where a first end of the capacitor C1 is connected to the positive output end of the rectifier bridge BD1, and a second end of the capacitor C1 is grounded.
According to the digital switching power supply, the main control module 11 correspondingly adjusts the duty ratio of the first sub-pulse control signal TF_A and the second sub-pulse control signal TF_B, the driving module 220 correspondingly outputs the first sub-driving signal and the second sub-driving signal according to the first sub-pulse control signal TF_A and the second sub-pulse control signal TF_B, 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 Marx generator 100 charges, the Marx generator 100 supplies power to the pressure wave generator, the pressure wave generator is driven to output pressure waves, the voltage of the target power supply signal is dynamically and continuously adjusted, the requirement of the Marx generator 100 on charging voltage is met, and the practicability is high.
The main control module 11 correspondingly adjusts the duty ratio of the output first sub-pulse control signal TF_A and the output second sub-pulse control signal TF_B according to the regulation signal, the driving module 220 correspondingly outputs the first sub-driving signal and the second sub-driving signal according to the first sub-pulse control signal TF_A and the second sub-pulse control signal TF_B, 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 to output the square wave signal to the rectifying circuit 250 for rectification, the target power supply signal is obtained and output to the Marx generator 100 for charging, and the Marx generator 100 after charging is completed releases the high-voltage pulse signal, so that the pressure wave generator is driven to generate and output pressure waves. Therefore, the method realizes the dynamic continuous adjustment of the voltage of the target power supply signal by adjusting the duty ratio of the pulse control signal, meets the requirement of the Marx generator on the charging voltage, has strong practicability, and solves the problem that the traditional medical high-voltage pulse power supply cannot dynamically adjust the voltage output to the Marx generator.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; 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 scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.
Claims (10)
1. A method of pressure wave balloon catheter identification, comprising:
transmitting 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 pre-stored model mark in the pressure wave balloon catheter, and determining a second model of the pressure wave balloon catheter according to the model mark;
and comparing the first model with the second model, if the two models are consistent, determining the model of the pressure wave balloon catheter, and if the two models are inconsistent, sending out a warning signal.
2. The method of claim 1, wherein the obtaining 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 a pressure wave generator of the pressure wave balloon catheter in response to the test signal.
3. The pressure wave balloon catheter identification method of claim 1 or 2, wherein the test signal comprises a voltage signal and the characteristic parameter comprises an impedance value.
4. A therapeutic device for angioplasty comprising a high voltage pulse power supply host and a pressure wave balloon catheter in communication 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 high-voltage pulse signals; 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, obtaining the characteristic parameters according to the feedback signal, and determining a first model of the pressure wave balloon catheter according to the characteristic parameters;
the main control module is also used for reading the model identification prestored in the storage module, determining a second model of the pressure wave balloon catheter according to the model identification, comparing the first model with the second model, determining the model of the pressure wave balloon catheter if the two models are consistent, and sending out a warning signal if the two models are inconsistent;
The display module is used for displaying detection information of the treatment device.
5. The therapeutic device of claim 4, wherein the master control module is further configured to control the pulse power 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 a target pressure wave.
6. The therapeutic device 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 the first voltage divider, the second voltage divider, and the third voltage divider have a uniform resistance.
8. The therapeutic apparatus of claim 6, wherein said high voltage pulse power host further comprises a digital-to-analog converter for converting a test signal output by said main control module into a voltage signal for loading at two opposite connection points of said wheatstone bridge, and an analog-to-digital converter for converting the voltages at the other two opposite connection points of said wheatstone bridge into digital signals for input to said main control module.
9. The therapeutic device of claim 8, wherein the master control module is further configured to determine the first model by determining an impedance value from the digital signal and determining the number of electrode pairs of the pressure wave generator based on the impedance value.
10. A power supply host for angioplasty, which is used for docking a pressure wave balloon catheter, and is characterized in that the power supply host comprises a main control module, a display module and a pulse power supply module for releasing high-voltage pulse signals; the pressure wave balloon catheter comprises a storage module and a pressure wave generator for generating pressure waves, wherein the main control module is used for reading model marks prestored in the storage module and determining a first model of the pressure wave balloon catheter according to the model marks, and the pressure wave balloon 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 balloon catheter according to the characteristic parameters; comparing the first model with the second model, if the two models are consistent, determining the model of the pressure wave balloon catheter, and if the two models are inconsistent, sending out a warning signal;
The display module is used for displaying detection information of the treatment device.
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| CN113900971A (en) * | 2021-09-27 | 2022-01-07 | 江苏朴芃医疗科技有限公司 | Consumable model identification circuit, identification method and calcified plaque treatment equipment |
| CN115005970A (en) * | 2022-08-05 | 2022-09-06 | 深圳北芯医疗科技有限公司 | Method and equipment for identifying abnormality of components of therapeutic apparatus and therapeutic apparatus |
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| CN111067574A (en) * | 2018-10-19 | 2020-04-28 | 波士顿科学国际有限公司 | System, catheter, drive unit and method for automatic catheter identification |
| CN109739908A (en) * | 2018-12-28 | 2019-05-10 | 芜湖哈特机器人产业技术研究院有限公司 | A kind of catheter information inquiry management system |
| CN110749831A (en) * | 2019-10-28 | 2020-02-04 | Oppo广东移动通信有限公司 | Terminal device, power supply device, system, mainboard type identification method and medium |
| CN111208175A (en) * | 2020-01-10 | 2020-05-29 | 三诺生物传感股份有限公司 | Sensor identification method and device and object to be tested test equipment |
| CN111506526A (en) * | 2020-04-20 | 2020-08-07 | 北京易点淘网络技术有限公司 | Battery model identification method and device, electronic equipment and storage medium |
| CN111388086A (en) * | 2020-06-08 | 2020-07-10 | 上海微创医疗器械（集团）有限公司 | Electrode balloon catheter |
| CN212700035U (en) * | 2020-08-25 | 2021-03-16 | 深圳市赛禾医疗技术有限公司 | Pressure wave sacculus pipe, be used for angioplasty's power supply host computer and treatment device |
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