Discharge detection circuit, method, high voltage generator and blood vessel calcification treatment device

Abstract

The present application relates to a kind of discharge detection circuit, method, high voltage generator and blood vessel calcification treatment equipment, discharge detection circuit includes current sampling module and processing module, current sampling module is set to pulse discharge loop, for the current in pulse discharge loop is sampled to obtain sampling voltage;Processing module is connected with current sampling module, for detecting sampling voltage multiple times during one pulse discharge, and when the number of sampling voltage is valid voltage is greater than or equal to preset value, it is determined that the discharge during pulse discharge is effective discharge.The present application can judge the effectiveness of pulse discharge in pulse discharge loop, to judge the reliability of equipment discharge.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a discharge detection circuit, method, high-voltage generator and blood vessel calcification treatment device. BACKGROUND

[0002] Blood vessel calcification is a process of calcium salt deposition in blood vessels. With the passage of time, more and more calcified substances will adhere to the blood vessel wall, causing the blood vessel lumen to become more and more narrow, the compliance of the blood vessel to decrease, the softness of the blood vessel to decrease, the blood vessel to become brittle and hard, and thus a series of blood vessel diseases such as atherosclerosis, high blood pressure, blood vessel injury and aging, etc. to occur, which will seriously affect the physical and mental health of a person if not treated in time.

[0003] With the development of science and technology and cardiovascular intervention technology, the treatment scheme for blood vessel calcification is also increasingly diversified. Internal medicine treatment slows down the calcification process through drugs, and the effect is relatively poor. The percutaneous transluminal rotational atherectomy has many limitations and is prone to complications. Inspired by the liquid-electric effect ultrasonic lithotripsy technology, when a high-voltage electric field passes through a liquid, a huge amount of energy is instantaneously released in the discharge channel, the liquid in the channel rapidly vaporizes, expands and causes an explosion, and the rapidly expanding gas cavity outside generates a strong shock wave in the liquid medium, which can crush the stones. Applying this technology to the treatment of blood vessel calcification is an impact wave treatment device composed of a high-voltage generator, a connector, a catheter and a consumable balloon (a consumable electrode is arranged in the balloon), i.e. a blood vessel calcification treatment device. The high-voltage generator is used to generate high voltage required for treatment and control the discharge sequence. The connector is used to connect the generator and the catheter, facilitating the operation of the catheter during the operation and facilitating the treatment. The catheter is the carrier of the calcification treatment, and the catheter tip contains a consumable balloon. The catheter is placed at the lesion site by a guide wire, and then the ultrasonic technology is used to crush the calcification to achieve the purpose of treatment.

[0004] The applicant finds that, during the treatment process, the balloon is placed in the patient's body, and the operator cannot directly obtain the discharge treatment state, and cannot judge the effectiveness of the discharge. If there is an abnormality in the electrode discharge circuit, such as a break, the discharge treatment cannot be effectively performed, which will directly affect the treatment result. If the discharge voltage is abnormal, the discharge cannot be performed or the shock wave generated by the discharge is weak, which will also affect the blood vessel calcification treatment effect. If the effectiveness is judged by monitoring the ultrasonic generated by the discharge, an additional ultrasonic detection device needs to be added. The ultrasonic detection device has a high cost, occupies a large volume and has a high implementation difficulty, and cannot quantitatively analyze the treatment effect.

[0005] The preceding description is to provide general background information and does not necessarily constitute the prior art. SUMMARY

[0006] In order to solve the above technical problems, the application provides a discharge detection circuit, a method, a high-voltage generator and a blood vessel calcification treatment device, which can judge the effectiveness of the pulse discharge in the pulse discharge circuit, so as to judge the reliability of the discharge of the device.

[0007] To achieve the above object, the application provides a discharge detection circuit, as one of the implementation manners, the discharge detection circuit comprises a current sampling module and a processing module; wherein,

[0008] The current sampling module is arranged in the pulse discharge circuit, and is used for sampling the current in the pulse discharge circuit to obtain a sampling voltage;

[0009] The processing module is connected with the current sampling module, and is used for detecting the sampling voltage multiple times during one pulse discharge, and determining that the discharge during the pulse discharge is effective discharge when the number of times that the sampling voltage is an effective voltage is greater than or equal to a preset value.

[0010] As one of the implementation manners, the current sampling module comprises a first resistor, a second resistor and a third resistor; wherein,

[0011] The first resistor is connected between the load and the negative electrode of the pulse discharge circuit;

[0012] The second resistor and the third resistor are connected in series between the load and the negative electrode of the pulse discharge circuit;

[0013] The common end of the second resistor and the third resistor is connected with the processing module.

[0014] As one of the implementation manners, the current sampling module further comprises a capacitor, and the capacitor is connected between the common end and the negative electrode of the pulse discharge circuit.

[0015] As one of the implementation manners, the current sampling module further comprises a voltage stabilizing diode, and the voltage stabilizing diode is connected between the common end and the negative electrode of the pulse discharge circuit.

[0016] As one of the implementation manners, the current sampling module further comprises an optical coupler, the positive electrode of the optical coupler is connected with the common end, the negative electrode of the optical coupler is connected with the negative electrode of the pulse discharge circuit, and the output end of the optical coupler is connected with the processing module.

[0017] As one of the implementation manners, the discharge detection circuit further comprises a fourth resistor, a fifth resistor and a sixth resistor; wherein,

[0018] The fourth resistor is connected between the common terminal and the positive terminal of the optocoupler, the fifth resistor is connected between the negative terminal of the optocoupler and the negative terminal of the pulse discharge circuit, and the sixth resistor is connected between the output terminal of the optocoupler and the processing module.

[0019] As one of the embodiments, the processing module is a field programmable logic gate array.

[0020] Based on the same inventive concept, the present application provides a discharge detection method, as one of the embodiments, the method comprises:

[0021] Detecting the sampling voltage multiple times during a pulse discharge, wherein the sampling voltage is obtained by sampling the current in the pulse discharge circuit;

[0022] When the number of times that the sampling voltage is effective voltage is greater than or equal to a preset value, it is determined that the discharge during the pulse discharge is effective discharge.

[0023] Based on the same inventive concept, the present application also provides a high-voltage generator, as one of the embodiments, the high-voltage generator comprises a power supply module, a voltage boosting module, a discharge control module, and the discharge detection circuit of any of the above embodiments; wherein,

[0024] The power supply module is connected with the voltage boosting module and the processing module, and is used to supply power to the voltage boosting module and the processing module;

[0025] The processing module is connected with the voltage boosting module, and is used to control the voltage boosting module to generate a voltage with a preset amplitude;

[0026] The discharge control module is connected between the voltage boosting module and the load, and is connected with the processing module, and is used to make the pulse discharge circuit between the voltage boosting module and the load conductive or disconnected according to the control of the processing module.

[0027] Based on the same inventive concept, the present application also provides a blood vessel calcification treatment device, as one of the embodiments, comprising the high-voltage generator of any of the above embodiments, a connector, and a load, wherein the load is a consumable electrode.

[0028] The output terminal of the high-voltage generator is connected with the consumable electrode through the connector to form a high-voltage discharge circuit.

[0029] In summary, the discharge detection circuit provided by the embodiment of the present application comprises a current sampling module and a processing module. The current sampling module is arranged in the pulse discharge circuit and is used to sample the current in the pulse discharge circuit to obtain a sampling voltage. The processing module is connected with the current sampling module and is used to detect the sampling voltage multiple times during one pulse discharge period, and when the number of times that the sampling voltage is an effective voltage is greater than or equal to a preset value, it is determined that the discharge during the pulse discharge period is effective discharge. The present application can judge the effectiveness of the pulse discharge in the pulse discharge circuit, thereby judging the reliability of the discharge of the equipment.

[0030] The discharge detection method, the high-voltage generator and the blood vessel calcification treatment device provided by the present application belong to the same inventive concept as the discharge detection circuit provided by the present application, and therefore have the same beneficial effects. BRIEF DESCRIPTION OF DRAWINGS

[0031] The drawings incorporated into the specification and constituting a part of the specification show embodiments consistent with the present application and, together with the specification, serve to explain the principles of the present application. In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, for those of ordinary skill in the art, other drawings can also be obtained without creative labor based on these drawings.

[0032] Figure 1 The schematic diagram of the discharge detection circuit provided by an embodiment of the present application;

[0033] Figure 2 The schematic diagram of the current sampling module provided by an embodiment of the present application;

[0034] Figure 3 The schematic diagram of the current sampling module provided by another embodiment of the present application;

[0035] Figure 4 The flowchart of the discharge detection method provided by an embodiment of the present application;

[0036] Figure 5 The structural schematic diagram of the high-voltage generator provided by an embodiment of the present application;

[0037] Figure 6 The structural schematic diagram of the blood vessel calcification treatment device provided by an embodiment of the present application;

[0038] Figure 7 The specific flowchart of the discharge detection of the blood vessel calcification treatment device provided by an embodiment of the present application.

[0039] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. The above-described drawings have shown the specific embodiments of the present application, and will be described in more detail hereinafter. These drawings and the written description are not intended to limit the scope of the present application in any way, but to explain the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0040] In order for those skilled in the art to better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative labor should fall within the protection scope of the present application.

[0041] It should be noted that the terms "first", "second", and the like in the specification of the present application, claims, and the above-described drawings are used to distinguish similar objects, but do not necessarily indicate a specific order or a chronological sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily limit to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0042] It should be understood that although each step in the flowchart in the embodiments of the present application is displayed in sequence according to the arrow, these steps are not necessarily executed in sequence according to the arrow. Unless otherwise stated herein, the execution of these steps has no strict sequence limitation, and they can be executed in other orders. Moreover, at least part of the steps in the figure can include multiple sub-steps or multiple stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution order is not necessarily sequential, but can be alternately executed with other steps or sub-steps or stages of other steps.

[0043] In the subsequent description, the suffix such as "module", "component" or "unit" used to represent elements is only for the convenience of the description of the present application, and has no specific meaning. Therefore, "module", "component" or "unit" can be used mixedly.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0045] Figure 1 This is a schematic diagram of a discharge detection circuit provided in an embodiment of the present invention. Figure 1 As shown, the discharge detection circuit includes a current sampling module 10 and a processing module 20. The current sampling module 10 is located in the pulse discharge circuit and is used to sample the current in the pulse discharge circuit to obtain a sampling voltage. The processing module 20 is connected to the current sampling module 10 and is used to detect the sampling voltage multiple times during a pulse discharge. When the number of times the sampling voltage is an effective voltage is greater than or equal to a preset value, the discharge during the pulse discharge is determined to be a valid discharge.

[0046] Specifically, when determining the validity of each pulse discharge in the pulse discharge circuit, this embodiment considers not only the magnitude of the discharge current but also the duration of the discharge current during a single pulse discharge. This is reflected in the voltage relationship, i.e., during a pulse discharge period, the sampling voltage is detected multiple times, and the number of times the sampling voltage is greater than or equal to the effective voltage is greater than or equal to a preset value. Wherein, a sampling voltage greater than or equal to the effective voltage indicates that the corresponding discharge current magnitude meets the discharge validity requirement; a sampling voltage greater than or equal to the effective voltage number greater than or equal to the preset value indicates that the corresponding discharge current duration meets the discharge validity requirement. Optionally, if the number of times the sampling voltage is equal to the effective voltage is less than the preset value, the discharge during the pulse discharge period is determined to be an abnormal discharge.

[0047] It should be noted that a pulse discharge circuit refers to a discharge circuit that discharges using a pulsed method, such as a high-voltage pulse. For example... Figure 1 In this circuit, HV+, the load, and HV- constitute a discharge loop. Even if a switching element is placed within the loop to control its on / off state, HV+, the load, HV-, and the switching element still constitute a discharge loop. In other words, disconnecting the discharge loop does not affect its function as a discharge loop. This explanation is basic knowledge possessed by those skilled in the art and will not be elaborated upon further here.

[0048] This application can determine the effectiveness of each pulse discharge by detecting the magnitude and duration of the discharge current during each pulse discharge in the pulse discharge circuit, thereby determining the reliability of the discharge device.

[0049] Figure 2 This is a schematic diagram of a current sampling module 10 provided in an embodiment of the present invention. Figure 2As shown, in one embodiment, the current sampling module 10 includes a first resistor R1, a second resistor R2, and a third resistor R3. The first resistor R1 is connected between the load and the negative terminal of the pulse discharge circuit. The second resistor R2 and the third resistor R3 are connected in series between the load and the negative terminal of the pulse discharge circuit. The common terminal of the second resistor R2 and the third resistor R3 is connected to the detection terminal of the processing module 20.

[0050] Specifically, the current sampling module 10 is connected to the pulse discharge circuit. For example, in the pulse discharge circuit of a vascular calcification treatment device, the load of the pulse discharge circuit is the consumable electrode. When the pulse discharge circuit discharges, the current flows from HV+ to HV-. A discharge current flows through the path formed by the first resistor R1, the second resistor R2, and the third resistor R3, thereby generating a voltage difference across each resistor. In this embodiment, the third resistor R3 is a sampling resistor, and the voltage across it is the sampling voltage. Optionally, the resistance of the first resistor R1 is less than the sum of the resistances of the second resistor R2 and the third resistor R3, and the resistance of the third resistor R3 is less than the resistance of the second resistor R2. Thus, for example, during high-voltage discharge, a large discharge current flows through the discharge circuit. Therefore, there will be a large current in the path formed by the first resistor R1, the second resistor R2, and the third resistor R3. Since the resistance of the first resistor R1 is small, the current in the discharge circuit basically flows through the first resistor R1. The current passing through the circuit formed by the second resistor R2 and the third resistor R3 in series is relatively small. In the series circuit formed by the second resistor R2 and the third resistor R3, the resistance of the second resistor R2 is larger and the resistance of the third resistor R3 is smaller. Therefore, the voltage across the second resistor R2 is higher and the voltage across the third resistor R3 is lower, which facilitates detection and processing.

[0051] like Figure 2 As shown, in one embodiment, the current sampling module 10 further includes a capacitor C1, which is connected between the common terminal of the second resistor R2 and the third resistor R3 and the negative terminal of the pulse discharge circuit.

[0052] Specifically, by setting capacitor C1, noise in the circuit can be filtered out and interference from noise can be eliminated.

[0053] like Figure 2 As shown, in one embodiment, the current sampling module 10 further includes a Zener diode D1, which is connected between the common terminal of the second resistor R2 and the third resistor R3 and the negative terminal of the pulse discharge circuit.

[0054] Specifically, by setting the Zener diode D1, it can be ensured that the voltage detected by the processing module 20 is within a reasonable range, thus avoiding damage to the processing module 20 caused by excessively high voltage at the detection port of the processing module 20.

[0055] Figure 3 A schematic diagram of the current sampling module 10 is provided for another embodiment of the present application. As shown, in an embodiment, the current sampling module 10 further comprises an optocoupler U1, the positive pole 1 of the optocoupler U1 is connected to the common end, the negative pole 3 of the optocoupler U1 is connected to the negative pole of the pulse discharge circuit, and the output end 5 of the optocoupler U1 is connected to the processing module 20. Figure 3

[0056] Specifically, the current sampling module 10 provided by the present embodiment adds the optocoupler U1 on the basis of the current sampling module 10 shown in the above embodiment, and can realize the detection of the sampling signal in an isolated manner, which can effectively avoid the damage of the high-voltage signal to the processing module 20, and is higher in safety and reliability. The optocoupler U1 can be a digital output optocoupler, a transistor output optocoupler, etc., which is not limited herein. It should be noted that, whether it is a digital quantity or an analog quantity, the discharge effectiveness analysis is based on the sampling voltage, and for different device types or different embodiments, the corresponding signal changes can be easily known by the person skilled in the art according to the inventive concept of the present application. Figure 2

[0057] As shown, the optocoupler U1 further comprises a ground end 4 and a working voltage end 6, and the working voltage end 6 receives the working voltage VCC. When the voltage difference between the positive pole 1 and the negative pole 3 of the optocoupler U1 reaches the light coupling conduction voltage, the optocoupler U1 is turned on, and the detection port of the processing module 20 connected to the output end 5 of the optocoupler U1 presents a high level. When the voltage difference between the positive pole 1 and the negative pole 3 of the optocoupler U1 does not reach the light coupling conduction voltage, the optocoupler U1 cannot be turned on, and the output end 5 of the optocoupler U1 will present a low level. When the discharge circuit cannot normally discharge due to various abnormalities, there is no discharge current flowing through the discharge circuit, no voltage is generated across the third resistor R3, no voltage is generated across the optocoupler U1, the optocoupler U1 is in a non-conduction state, and the detection port of the processing module 20 is low. When the discharge current is weak due to the abnormally low voltage during discharge, the voltage across the third resistor R3 will also decrease accordingly, and this voltage cannot make the optocoupler U1 conduct, the optocoupler U1 is in a non-conduction state, and the detection port of the processing module 20 is low. Figure 3

[0058] ​​​Therefore, by repeatedly detecting the voltage level of the detection port of the processing module 20 during pulse discharge, the pulse discharge is considered valid only when the number of high-level signals is greater than or equal to a preset value. In other words, the optocoupler U1 will only conduct if the discharge is effective, and the greater the discharge intensity, the longer the optocoupler U1 conducts (i.e., the more times a high-level signal is detected). Therefore, this method allows for accurate judgment of discharge effectiveness and intensity, and can also be used to effectively isolate the high voltage of the discharge circuit from the low voltage of the detection circuit, ensuring high safety and reliability of the detection circuit.

[0059] It is worth mentioning that when the output terminal 5 of the optocoupler U1 or the detection terminal of the processing module 20 is at a high level, it means that the sampling voltage across the third resistor R3 is an effective voltage.

[0060] like Figure 3 As shown, in one embodiment, the discharge detection circuit further includes a fourth resistor R4, a fifth resistor R5, and a sixth resistor R6. The fourth resistor R4 is connected between the common terminal of the second resistor R2 and the third resistor R3 and the positive terminal 1 of the optocoupler U1; the fifth resistor R5 is connected between the negative terminal 3 of the optocoupler U1 and the negative terminal HV- of the pulse discharge circuit; and the sixth resistor R6 is connected between the output terminal 5 of the optocoupler U1 and the processing module 20.

[0061] In one embodiment, the processing module 20 is a field-programmable gate array (FPGA).

[0062] Specifically, Field Programmable Gate Arrays (FPGAs) can be used to handle multi-dimensional, computationally intensive tasks. Relying on a pipelined parallel architecture, they have a technical advantage in terms of computation result return latency and are widely used in data processing and storage, as well as instrumentation, telecommunications, and digital signal processing. Because the discharge time is extremely fast, ordinary MCUs may not be able to accurately capture the instantaneous discharge signal, while FPGAs, with their high processing speed, can quickly detect the voltage signal at their detection ports and accurately reconstruct the discharge situation.

[0063] In summary, the discharge detection circuit provided in this embodiment of the invention includes a current sampling module and a processing module. The current sampling module is disposed in the pulse discharge circuit and is used to sample the current in the pulse discharge circuit to obtain a sampling voltage. The processing module is connected to the current sampling module and is used to detect the sampling voltage multiple times during a pulse discharge. When the number of times the sampling voltage is a valid voltage is greater than or equal to a preset value, the discharge during the pulse discharge is determined to be a valid discharge. This invention can determine the validity of pulse discharge in a pulse discharge circuit, thereby determining the reliability of the device discharge.

[0064] Based on the same inventive concept, embodiments of the present invention also provide a discharge detection method. Please refer to... Figure 4 , Figure 4 This is a schematic flowchart of a discharge detection method provided in an embodiment of the present invention. Figure 6 As shown, the method includes:

[0065] S10, the sampling voltage is detected multiple times during a pulse discharge, wherein the sampling voltage is obtained by sampling the current in the pulse discharge circuit;

[0066] S20: When the number of times the sampled voltage is an effective voltage is greater than or equal to a preset value, the discharge during the pulse discharge period is determined to be an effective discharge.

[0067] In one embodiment, the method further includes: when the number of times the sampled voltage is an effective voltage is less than a preset value, determining that the discharge during the pulse discharge period is an abnormal discharge.

[0068] It should be noted that for any parts of this method embodiment that are not described or explained in detail, please refer to the description of the foregoing embodiments, and will not be repeated here.

[0069] In summary, the discharge detection method provided by the embodiments of the present invention can determine the effectiveness of pulse discharge in a pulse discharge circuit, thereby determining the reliability of the device discharge.

[0070] Based on the same inventive concept, embodiments of the present invention also provide a high-voltage generator. Please refer to... Figure 5 , Figure 5 This is a schematic diagram of a high-voltage generator provided in one embodiment of the present invention. Figure 5 As shown, the high-voltage generator includes a power supply module 30, a boost module 40, a discharge control module 50, and a discharge detection circuit according to any of the aforementioned embodiments. The power supply module 30 is connected to the boost module 40 and the processing module 20, and is used to supply power to the boost module 40 and the processing module 20. The processing module 20 is connected to the boost module 40 and is used to control the boost module 40 to generate a voltage of a preset amplitude. The discharge control module 50 is connected between the boost module 40 and the load, and is also connected to the processing module 20, and is used to connect or disconnect the pulse discharge circuit between the boost module 40 and the load according to the control of the processing module 20.

[0071] Specifically, when the equipment is working, the processing module 20 controls the boost module 40 to generate a high voltage with a preset voltage amplitude. Optionally, after detecting that the generated high voltage matches the preset high voltage, the processing module 20 controls the switching element in the discharge control module 50 to be turned on for a short time (e.g., a few microseconds) to perform pulse discharge.

[0072] In one embodiment, the processing module 20 is further configured to prohibit discharge when it is determined that the discharge during the pulse discharge period is an abnormal discharge.

[0073] Specifically, after a pulse discharge, the processing module 20 (e.g., FPGA) detects the discharge effectiveness during the discharge process. If the detection port fails to detect the corresponding level change or the high-level duration of the detection port is too short (i.e., the number of times the sampled voltage is greater than the effective voltage is less than a preset value), the processing module 20 determines it as an abnormal discharge. When an abnormal discharge occurs, the subsequent discharge treatment process needs to be terminated promptly, and an alarm should be issued immediately so that the operator is aware of the equipment's operating status. Specifically, the processing module 20 can control the high-voltage-related switching elements to shut off, preventing high voltage in the discharge circuit from affecting personal safety; and terminating the generation of high voltage further ensures the safety of the operator and patient.

[0074] In one embodiment, the high-voltage generator further includes a step-down module 60, which is used to step down the voltage of the power supply module 30 to supply power to the processing module 20.

[0075] In summary, the high-voltage generator provided in this embodiment of the invention can determine the effectiveness of pulse discharge in the pulse discharge circuit, thereby determining the reliability of the equipment discharge.

[0076] It should be noted that for any parts not described or explained in detail in this embodiment, please refer to the description in the foregoing embodiments, and will not be repeated here.

[0077] Based on the same inventive concept, embodiments of the present invention also provide a device for treating vascular calcification. Please refer to... Figure 6 , Figure 6 This is a schematic diagram of the structure of a vascular calcification treatment device provided in an embodiment of the present invention. Figure 6 As shown, the vascular calcification treatment device includes a high-voltage generator, a connector (not shown in the figure), and a load, as described in any of the preceding embodiments; wherein the load is a consumable electrode 70. The output terminal of the high-voltage generator (i.e., the output terminal of the boost module) is connected to the consumable electrode via the connector to form a high-voltage discharge circuit.

[0078] Specifically, when the vascular calcification treatment device is working, the processing module 20 in the high voltage generator controls the boost module 40 to generate a high voltage with a preset voltage amplitude. After detecting that the generated high voltage matches the preset high voltage, the processing module 20 controls the switching element in the discharge control circuit to turn on. After the switching element is turned on, the high voltage will reach the consumable electrode 70 at the end of the catheter through the connector and the wire in the catheter. Because the voltage at both ends of the electrode is high, when the strong electric field passes through liquids such as saline, the huge energy will be released instantly through the liquid channel, thereby generating a shock wave. The shock wave can be used for the treatment of calcification in patients.

[0079] The impact energy generated by the blood vessel calcification treatment device during discharging is related to the current in the discharging circuit, and the greater the discharging intensity, the longer the discharging current and the discharging time are. Therefore, the embodiment detects the current in the discharging circuit, and essentially evaluates the effectiveness of the pulse discharging by the intensity and duration of the discharging current, judges the discharging reliability of the device, and then facilitates the treatment analysis of the operator, and timely gives a warning prompt when the discharging is abnormal, so as to avoid that the device continues to work when the abnormality occurs, thereby affecting the effectiveness and accuracy of the treatment.

[0080] In an embodiment, the processing module is further configured to give an abnormality prompt. For example, the abnormality prompt is given by changing the state of an LED, beeping by a beeper, and displaying on a screen, so that the operator can obtain the abnormality state of the device in time.

[0081] In order to more clearly describe the technical scheme of the discharging detection of the present application in a specific application scenario, please refer to Figure 7 , Figure 7 The specific flowchart of the discharging detection of the blood vessel calcification treatment device provided by the embodiment of the present application is shown in FIG. 1. As shown in FIG. 1, the specific working flow of the discharging detection of the blood vessel calcification treatment device includes the following steps: Figure 7

[0082] Step S110: triggering the boost module to generate a voltage with a preset amplitude;

[0083] Step S111: controlling the discharging control module to be turned on and kept for a preset time, so as to generate a pulse voltage;

[0084] Step S112: configuring a timing time and starting the timing;

[0085] Step S113: detecting the level state of the "detection port" and counting the high level;

[0086] Step S114: judging whether the timing time arrives.

[0087] When the timing time does not arrive, returning to step S113;

[0088] When the timing time arrives, entering step S115: stopping the timing;

[0089] Step S116: judging whether the value of the high level is greater than or equal to a preset value;

[0090] When the value of the high level is greater than or equal to the preset value, entering step S117: marking the present discharging as effective discharging;

[0091] When the value of the high level is less than the preset value, entering step S118: marking the present discharging as abnormal discharging;

[0092] ​Step S119: performing an abnormality prompt and prohibiting discharging.

[0093] Specifically, when performing the discharging treatment, the processing module 20, for example, the FPGA, controls the boost module 40 to generate a high voltage with a preset amplitude, and then controls the discharging control module 50 to be turned on for a short time, for example, the on time is several microseconds, to generate a pulse voltage for high voltage discharging. At the same time of triggering the discharging control module 50 to be turned on, the processing module 20 starts to read the level of the detection port and starts a timer to count time, and the counting time is slightly longer than the on time of the discharging control module 50, to ensure that the change of the level of the detection port during the whole discharging process can be effectively detected. During the timing time, the processing module 20 continues to detect the level state of the detection port and counts the high level. When the timing time arrives, the timer is turned off to stop counting, and the high level count value is judged. If the discharging is abnormal, there is no high level of the detection port during the discharging process, the high level count value of the detection port is 0 or the count value is less than a preset value, the discharging abnormality is marked, and the abnormal operation restriction can be performed, such as closing the generation of the high voltage, and the operator cannot trigger the discharging treatment again. If the high voltage count value of the detection port is greater than or equal to the preset value, it is indicated that the discharging is effective, the longer the high level time of the detection port, the greater the discharging intensity, and the better the calcification treatment effect on the patient.

[0094] It should be noted that the places not described or not described in detail in the method embodiment are referred to the foregoing embodiment description, and will not be described here.

[0095] In summary, the blood vessel calcification treatment device provided by the embodiment of the application can judge the effectiveness of the pulse discharging in the pulse discharging circuit, so as to judge the reliability of the discharging of the device, and ensure that the treatment process is safe, stable and reliable.

[0096] The above is only the preferred embodiment of the application, and does not limit the application in any form. Although the application has been disclosed as above, it is not intended to limit the application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content without departing from the scope of the technical solution of the application, to obtain equivalent embodiments with equivalent changes. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the application, without departing from the technical solution of the application, still belongs to the scope of the technical solution of the application.

Claims

1. A discharge detection circuit, characterized by comprising: The discharge detection circuit comprises a current sampling module and a processing module, wherein The current sampling module is arranged in a pulse discharge circuit and is used for sampling current in the pulse discharge circuit to obtain a sampling voltage; The processing module is connected with the current sampling module, is used for detecting the sampling voltage multiple times during a pulse discharge period, and determines that the discharge during the pulse discharge period is effective discharge when the number of times that the sampling voltage is effective voltage is greater than or equal to a preset value; The current sampling module comprises a first resistor, a second resistor, a third resistor and an optocoupler; The first resistor is connected between a load and a negative electrode of the pulse discharge circuit; The second resistor and the third resistor are connected in series between the load and the negative electrode of the pulse discharge circuit; A common end of the second resistor and the third resistor is connected with the processing module; A positive electrode of the optocoupler is connected with the common end, a negative electrode of the optocoupler is connected with the negative electrode of the pulse discharge circuit, and an output end of the optocoupler is connected with the processing module; When a voltage difference between the positive electrode and the negative electrode of the optocoupler reaches an optocoupling conduction voltage during the pulse discharge period, the optocoupler is turned on, a detection port of the processing module connected with the output end of the optocoupler presents a high level, and the sampling voltage at this time is counted into the number of times that the sampling voltage is effective voltage.

2. The discharge detection circuit according to claim 1, characterized by The current sampling module further comprises a capacitor connected between the common end and the negative electrode of the pulse discharge circuit.

3. The discharge detection circuit according to claim 2, characterized by The current sampling module further comprises a voltage stabilizing diode connected between the common end and the negative electrode of the pulse discharge circuit.

4. The discharge detection circuit according to claim 3, characterized by The discharge detection circuit further comprises a fourth resistor, a fifth resistor and a sixth resistor, wherein The fourth resistor is connected between the common end and the positive electrode of the optocoupler, the fifth resistor is connected between the negative electrode of the optocoupler and the negative electrode of the pulse discharge circuit, and the sixth resistor is connected between the output end of the optocoupler and the processing module.

5. The discharge detection circuit according to claim 4, characterized by The processing module is a field programmable logic gate array.

6. A discharge detection method characterized by, The discharge detection circuit is applied to any one of claims 1 to 5 and comprises The sampling voltage is detected multiple times during a pulse discharge period, wherein the sampling voltage is obtained by sampling current in the pulse discharge circuit; When the number of times that the sampling voltage is effective voltage is greater than or equal to a preset value, it is determined that the discharge during the pulse discharge period is effective discharge.

7. A high-voltage generator, characterized by The discharge detection circuit comprises a power module, a voltage boosting module, a discharge control module and the discharge detection circuit according to any one of claims 1 to 5, wherein The power module is connected with the voltage boosting module and the processing module, and is used for supplying power to the voltage boosting module and the processing module; The processing module is connected with the voltage boosting module, and is used for controlling the voltage boosting module to generate a voltage with a preset amplitude; The discharge control module is connected between the voltage boosting module and a load, and is connected with the processing module, and is used for making the pulse discharge circuit between the voltage boosting module and the load conduct or disconnect according to the control of the processing module.

8. A vascular calcification treatment device, characterized by, The high-voltage generator, the connector and the load, which is a consumable electrode, as claimed in claim 7 are included. The output end of the high-voltage generator is connected with the consumable electrode through the connector to form a high-voltage discharge loop.

Images