Ultrasonic ablation device and system

Abstract

Disclosed in the present invention are an ultrasonic ablation device and system. The ultrasonic ablation device comprises: a control part, used for automatic control of ultrasonic ablation; a catheter, connected to the control part and at least comprises a water inlet cavity, a water outlet cavity, and a wire cavity; an ultrasonic transducer, arranged at the distal end of the catheter and connected to the control part so as to be switched between an ablation mode and a measurement mode, wherein the ultrasonic transducer is used for ultrasonic ablation in the ablation mode, and is used for temperature measurement in the measurement mode; a flexible ablation balloon, sleeved outside the ultrasonic transducer; a flexible electrode, mounted on the outer side of the balloon and used for measuring impedance; and a pressure sensor, mounted on the inner side of the balloon and used for measuring water pressure, wherein the control part is used for receiving the impedance, the water pressure, and the temperature so as to determine, on the basis of a first determination logic, whether the flexible ablation balloon is completely attached to a vessel wall; on the basis of a switching logic, controlling the ultrasonic transducer to perform mode switching; and on the basis of a second determination logic, determining whether an ablation end point is reached.

Description

Ultrasonic ablation device and system Technical Field

[0001] The present invention relates to an ultrasonic ablation device and also to a corresponding ultrasonic ablation system, belonging to the technical field of medical devices. Background Art

[0002] Ultrasonic ablation technology refers to the use of the characteristics of ultrasound waves that can pass through human tissue and focus on a specific target area, concentrating the energy to a sufficient intensity, causing the focal area to reach an instantaneous high temperature, destroying the target tissue, and manifesting as coagulative necrosis in tissue pathology, thereby achieving the purpose of destroying the lesion area, while the tissue outside the lesion area is not damaged. However, current ultrasonic ablation equipment generally has the problem of being unable to provide real-time feedback on the ablation process, and manual initiation and termination of ablation are required during the operation. This not only prolongs the operation time, but may also cause the blood vessels to be blocked for a long time, thereby causing adverse reactions in some patients. In addition, existing ultrasonic ablation balloons are mostly rigid in design, making it difficult to adapt to the shapes of different blood vessels and cavities, and have poor wall adhesion, which will affect the ablation effect and fail to achieve the best therapeutic effect. Summary of the Invention

[0003] The primary technical problem to be solved by the present invention is to provide an ultrasonic ablation device.

[0004] Another technical problem to be solved by the present invention is to provide an ultrasonic ablation system.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0006] According to a first aspect of an embodiment of the present invention, there is provided an ultrasonic ablation device, comprising:

[0007] A control unit, used for automatic control of ultrasonic ablation;

[0008] a catheter, the proximal end of which is connected to the control unit, the catheter comprising at least a water inlet cavity, a water outlet cavity, and a wire cavity through which a wire is passed;

[0009] an ultrasonic transducer disposed at the distal end of the catheter and electrically connected to the control unit via the wire, so as to switch between an ablation mode and a measurement mode under the control of the control unit; wherein, in the ablation mode, the ultrasonic transducer is used to perform ultrasonic ablation on the area to be ablated; and in the measurement mode, the ultrasonic transducer is used to measure the temperature and tissue morphology of the area to be ablated;

[0010] A flexible ablation balloon is sleeved on the outside of the ultrasonic transducer and is connected to the water inlet cavity and the water outlet cavity;

[0011] a flexible electrode, mounted on the outside of the flexible ablation balloon and electrically connected to the control unit for detecting impedance;

[0012] a pressure sensor, mounted on the inner side of the flexible ablation balloon and electrically connected to the control unit, for detecting water pressure;

[0013] The control unit is configured to receive the impedance and water pressure and determine whether the flexible ablation balloon is completely adhered to the wall according to a first judgment logic;

[0014] The control unit is further configured to receive the impedance, water pressure, and temperature and tissue morphology of the area to be ablated, and control the ultrasonic transducer to switch between the ablation mode and the measurement mode according to a switching logic;

[0015] The control unit is further configured to receive the impedance, water pressure, and the temperature and tissue morphology of the area to be ablated, and determine whether the ablation endpoint has been reached according to a second judgment logic.

[0016] Preferably, the first judgment logic specifically includes:

[0017] If the impedance value reaches a preset impedance range and the water pressure reaches a preset water pressure range, it is determined that the flexible ablation balloon is completely adhered to the wall;

[0018] If the impedance value does not reach a preset impedance range, and / or the water pressure does not reach a preset water pressure range, it is determined that the flexible ablation balloon is not completely adhered to the wall.

[0019] Determination of the ablation area: The ultrasonic transducer generates a single ultrasonic wave, and the distance to the blood vessel wall is calculated by analyzing the echo signal, thereby obtaining the ablation area.

[0020] Preferably, the switching logic specifically includes:

[0021] The preset duration is used as the switching condition, and the switching is performed every preset duration;

[0022] Alternatively, the control unit receives the impedance, water pressure, and temperature and tissue morphology of the area to be ablated, and outputs different powers according to the difference between the temperature of the area to be ablated and a preset temperature; wherein, when it is necessary to calculate the output power, the ultrasonic transducer switches to the measurement mode to measure the temperature of the area to be ablated, so as to calculate the output power using the control unit; when the output power calculation is completed, the ultrasonic transducer automatically switches to the ablation mode and continues for a preset time until an ultrasonic ablation is completed, and automatically switches to the measurement mode after an ultrasonic ablation is completed to calculate the next output power; the ultrasonic transducer repeatedly switches between the measurement mode and the ablation mode until the ablation end point is reached.

[0023] Preferably, the second judgment logic specifically includes:

[0024] When the temperature of the area to be ablated measured in the measurement mode reaches the preset temperature and remains stable for a preset time, and the water pressure and impedance drop to the theoretical value range, it is determined that the ablation end point has been reached.

[0025] Preferably, the control unit at least includes:

[0026] The main control module is used to process signals and data and control automated ablation;

[0027] a signal generator, connected to the main control module, for receiving and sending ultrasonic signals;

[0028] a power amplifier connected to the signal generator for amplifying the ultrasonic signal;

[0029] A gating module, connected to the power amplifier, for selecting the number of signal channels;

[0030] A phase voltage and current module, connected to the main control module, for detecting parameters and outputting a matching ultrasonic frequency;

[0031] The impedance matching module is connected to the main control module and is used to detect the matching impedance and output an ultrasonic signal with matching power.

[0032] Preferably, the ultrasonic transducer is connected to the gating module to switch between the ablation mode and the measurement mode according to the number of signal channels;

[0033] In the ablation mode, the ultrasonic transducer converts electrical signals into mechanical vibrations to continuously generate ultrasonic waves, and heats the area to be ablated within the energy focus of the acoustic wave transmission;

[0034] In the measurement mode, the ultrasonic transducer converts a pulsed electrical signal into a mechanical signal to generate a single ultrasonic wave, and calculates tissue morphology changes and temperature changes by analyzing the echo signal.

[0035] Preferably, the ultrasonic ablation device further comprises:

[0036] a display connected to the control unit for displaying data;

[0037] An alarm is connected to the control unit to sound an alarm when the data is in an abnormal state.

[0038] Preferably, the catheter further comprises a guidewire cavity, in which a guidewire is passed through, so as to control the bending direction of the catheter.

[0039] Preferably, the flexible ablation balloon is made of silicone, and the flexible electrode is a flexible circuit board.

[0040] According to a second aspect of an embodiment of the present invention, an ultrasonic ablation system is provided, comprising the ultrasonic ablation device described above.

[0041] Compared with the prior art, the present invention has the following technical effects:

[0042] 1. Real-time monitoring of water pressure and impedance during the surgical process and surgical environment to ensure that the flexible ablation balloon is completely adhered to the wall, improve wall adhesion, and ensure the ablation effect.

[0043] 2. The control unit controls the ultrasonic transducer to continuously switch between the ablation mode and the temperature measurement mode to achieve automatic ablation, and automatically determines the ablation endpoint during the ablation process, shortening the operation time and reducing the patient's adverse reactions during the operation.

[0044] 3. The flexible ablation balloon is made of silicone and the flexible electrode is made of flexible circuit board, which can reduce the patient's discomfort while ensuring adhesion to the wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] FIG1 is a schematic structural diagram of an ultrasonic ablation device provided by an embodiment of the present invention;

[0046] FIG2 is a functional module block diagram of an ultrasonic ablation device provided by an embodiment of the present invention;

[0047] FIG3 is a schematic structural diagram of a control unit in an embodiment of the present invention;

[0048] FIG4 is a schematic cross-sectional view of a catheter in an embodiment of the present invention. DETAILED DESCRIPTION

[0049] The technical content of the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0050] As shown in Figures 1 and 2, an embodiment of the present invention provides an ultrasonic ablation device, comprising a control unit 1, a catheter 2, an ultrasonic transducer 3, a flexible ablation balloon 4, a flexible electrode 5, and a pressure sensor 6. The control unit 1 is capable of controlling the ultrasonic transducer 3 to switch between ablation mode and measurement mode until the ablation process is completed. The flexible electrode 5 disposed on the outside of the flexible ablation balloon 4 and the pressure sensor 6 disposed on the inside of the flexible ablation balloon 4 are both connected to the control unit 1, so that the control unit 1 can determine whether the flexible ablation balloon 4 is completely adhered to the wall through changes in impedance and pressure.

[0051] Specifically, in one embodiment of the present invention, the control unit 1 is used for automatic control of ultrasonic ablation. As shown in Figure 3, the control unit 1 specifically includes a main control module 11, a signal generator 12, a power amplifier 13, a gating module 14, a phase voltage and current module 15, and an impedance matching module 16. Among them, the main control module 11 is used to process signals and data and control automated ablation. The signal generator 12 is connected to the main control module 11 for receiving and sending ultrasonic signals. The power amplifier 13 is connected to the signal generator 12 for amplifying the ultrasonic signal. The gating module 14 is connected to the power amplifier 13 for selecting the number of signal channels. The phase voltage and current module 15 is connected to the main control module 11 for detecting parameters and outputting matching ultrasonic frequencies. The impedance matching module 16 is connected to the main control module 11 for detecting matching impedance and outputting ultrasonic signals of matching power.

[0052] The proximal end of the catheter 2 is connected to the control unit 1, and the distal end of the catheter 2 is used to extend into the blood vessel. As shown in Figure 4, the catheter 2 is a multi-lumen tube, which at least includes a water inlet chamber 201, a water outlet chamber 202, a guide wire chamber 203 and a guide wire chamber 204. Among them, the water inlet chamber 201 and the water outlet chamber 202 are respectively connected to the water inlet and water outlet of the external water supply device to circulate water. A guide wire 210 is passed through the guide wire chamber 203 to electrically connect the ultrasonic transducer 3 at the distal end of the catheter 2 to the control unit 1. A guide wire 220 is passed through the guide wire chamber 204 to control the bending direction of the catheter 2, thereby driving the catheter 2 into different vascular tissues. It can be understood that the catheter 2 can also be provided with other cavities as needed, which are not specifically limited here.

[0053] As shown in Figures 1 and 2, the ultrasonic transducer 3 is disposed at the distal end of the catheter 2 and is electrically connected to the gating module 14 of the control unit 1 via a wire 210, so as to switch between the ablation mode and the measurement mode according to the number of signal channels under the control of the gating module 14. In the ablation mode, the ultrasonic transducer 3 converts electrical signals into mechanical vibrations to continuously generate ultrasonic waves, and heats the area to be ablated within the energy focus of the sound wave transmission, thereby achieving the effect of ultrasonic ablation. In the measurement mode, the ultrasonic transducer 3 converts pulsed electrical signals into mechanical signals to generate a single ultrasonic wave, and calculates tissue morphology changes and temperature changes by analyzing the echo signals, thereby achieving temperature and tissue morphology measurement of the area to be ablated.

[0054] As shown in Figures 1 and 2, the flexible ablation balloon 4 is sleeved on the outside of the ultrasonic transducer 3 and is connected to the water inlet chamber 201 and the water outlet chamber 202. Thus, water can be introduced into the flexible ablation balloon 4 through an external water supply device, so that the flexible ablation balloon 4 is continuously filled until it hits the blood vessel wall. In addition, in this embodiment, the flexible electrode 5 is installed on the outside of the flexible ablation balloon 4 and is electrically connected to the control unit 1 for detecting impedance. The pressure sensor 6 is installed on the inside of the flexible ablation balloon 4 and is electrically connected to the control unit 1 for detecting water pressure. Preferably, the flexible ablation balloon 4 is made of silicone and the flexible electrode 5 is a flexible printed circuit board (FPC).

[0055] As shown in Figures 1 and 2, in the above embodiment, the ultrasonic ablation device preferably further includes a display 7 and an alarm 8. The display 7 is connected to the control unit 1 for displaying data, and the alarm 8 is connected to the control unit 1 to sound an alarm when the data is abnormal.

[0056] During the continuous filling of the flexible ablation balloon 4, the main control module 11 of the control unit 1 receives impedance and water pressure, thereby being able to determine whether the flexible ablation balloon 4 is completely adhered to the wall according to the first judgment logic, so as to ensure the wall adhesion of the flexible ablation balloon 4. When the flexible ablation balloon 4 is tightly attached to the blood vessel wall, the ultrasonic transducer 3 switches to the ablation mode and releases ultrasonic waves to perform ultrasonic ablation on the area to be ablated. At the same time, according to the preset switching logic, after completing the first ultrasonic ablation, the ultrasonic transducer 3 automatically switches to the measurement mode, performs scanning, and feeds back the scanned measurement data to the main control module 11 for processing. The main control module 11 detects temperature, pressure, and impedance in real time to determine whether the ablation end point has been reached according to the second judgment logic. The ultrasonic transducer 3 will repeatedly switch between the measurement mode and the ablation mode until the ablation end point is reached.

[0057] It is understood that during the ablation process, the external water supply device maintains the current pressure and continuously inputs saline solution through the catheter 2, ensuring that the flexible ablation balloon 4 maintains the desired size while also cooling the interior of the flexible ablation balloon 4. After the saline solution enters the flexible ablation balloon 4 through the water inlet lumen 201 of the catheter 2, it is discharged from the water outlet lumen 202 to the storage device or returned to the saline tank for recycling.

[0058] In one embodiment of the present invention, the first judgment logic specifically includes: if the impedance value reaches a preset impedance range and the water pressure reaches a preset water pressure range, then the flexible ablation balloon is determined to be fully adherent to the wall. Conversely, if the impedance value does not reach the preset impedance range and / or the water pressure does not reach the preset water pressure range, then the flexible ablation balloon is determined to be incompletely adherent to the wall.

[0059] In one embodiment of the present invention, the switching logic specifically includes: taking a preset time as a switching condition, switching is performed once every preset time. Alternatively, the control unit receives impedance, water pressure, temperature and tissue morphology of the area to be ablated, and outputs different powers according to the difference between the temperature of the area to be ablated and the preset temperature. Specifically, the ultrasonic transducer first starts the measurement mode, performs the first temperature measurement on the area to be ablated, and after the first temperature measurement is completed, the temperature data is sent to the controller to calculate the first output power. When the first output power calculation is completed, the ultrasonic transducer automatically switches to the ablation mode to release ultrasonic waves to ablate the area to be ablated for the first time (for a preset time). When the first ablation is completed, the ultrasonic transducer automatically switches to the measurement mode to perform a second temperature measurement on the area to be ablated, so that the second output power is calculated by the controller; when the second output power calculation is completed, the ultrasonic transducer switches to the ablation mode to release ultrasonic waves to ablate the area to be ablated for the second time (for a preset time), and this cycle is repeated until the ablation end point is reached.

[0060] In one embodiment of the present invention, the second judgment logic specifically includes: when the temperature of the area to be ablated measured in the measurement mode reaches a preset temperature and remains stable for a preset time, and the water pressure and impedance drop to a theoretical value range, it is determined that the ablation end point has been reached.

[0061] The following describes in detail the working steps of the ultrasonic ablation device provided by the embodiment of the present invention:

[0062] S1: The ultrasonic ablation device performs a self-test and sends the self-test data to the main control module 11 , which is visualized through the display 7 .

[0063] S2: After the doctor inserts the catheter 2 into the patient's designated tissue, manually starts ablation, and uses an external water supply device to inject saline into the flexible ablation balloon 4. When the saline is first injected, a 3-5 second exhaust procedure will be performed. After the exhaust procedure is completed, the main control module 11 closes the drain hole and keeps the water injection hole continuously filled with water.

[0064] During this process, the pressure sensor 6 detects changes in water pressure, and the flexible electrode 5 detects changes in impedance, transmitting the water pressure and impedance changes to the main control module 11 in real time. The main control module 11 then uses a first judgment logic to determine whether the flexible ablation balloon 4 is completely adherent to the vessel wall. When the flexible ablation balloon is completely adherent to the vessel wall, ultrasonic ablation begins. The main control system 11 opens the drain hole and maintains the corresponding water pressure to ensure that the flexible ablation balloon 4 remains adherent to the vessel wall. The physiological saline inside the balloon continuously circulates, thereby cooling the ultrasonic transducer 3 and the flexible ablation balloon 4.

[0065] S3: When the flexible ablation balloon is completely attached to the wall, the main control module 11 sends an ultrasonic signal through the signal generator 12, and the signal is amplified by the power amplifier 13. At the same time, the phase voltage and current module 15 starts working and feeds back parameters to the main control module 11 in real time for phase detection. The main control module 11 adjusts the parameters of the signal generator 12 to complete phase matching.

[0066] S4: The phase-matched signal is sent to the ultrasonic transducer 3 via a suitable number of channels selected by the gating module 14 .

[0067] S5: The ultrasonic transducer 3 works in a cycle to switch between the ablation mode and the temperature measurement mode according to the preset switching logic, and feeds back the ultrasonic data in the measurement mode to the main control module 11, so that the temperature and tissue morphology of the area to be ablated can be determined by the main control module 11.

[0068] S6: During the entire ablation process, the real-time monitored temperature, pressure, and impedance data are fed back to the main control module 11. The main control module 11 processes the data and determines whether the ablation endpoint is reached according to the second judgment logic, thereby completing the ablation procedure.

[0069] On the basis of the above-mentioned embodiment, an embodiment of the present invention further provides an ultrasonic ablation system, which includes the above-mentioned ultrasonic ablation device. Specifically, in addition to the above-mentioned ultrasonic ablation device, the ultrasonic ablation system may also include a control handle and a control host connected to the above-mentioned ultrasonic ablation device, wherein the control handle is controlled by the operator to pull and push the catheter 2 so that the above-mentioned ultrasonic ablation device enters the tissue. In addition, the control host is communicated with the control unit 1 of the above-mentioned ultrasonic ablation device (the control unit 1 here can also be a component of the control host) to achieve temperature control, energy control, etc. of the ultrasonic transducer 3, so that the ultrasonic transducer 3 will be repeatedly switched between the measurement mode and the ablation mode until the ablation end point is reached. In addition, the ultrasonic ablation system can also incorporate functions such as three-dimensional mapping, differentiation of tissue density, tissue crushing (plaque, thrombus, etc.), and ultrasound angiography, so as to cooperate with the ultrasonic ablation device to complete the ultrasonic ablation surgery.

[0070] In summary, the ultrasonic ablation device and system provided by the embodiments of the present invention have the following beneficial effects:

[0071] 1. Real-time monitoring of water pressure and impedance during the surgical process and surgical environment to ensure that the flexible ablation balloon 4 is completely adhered to the wall, improve wall adhesion, and ensure the ablation effect.

[0072] 2. The main control module 11 controls the ultrasonic transducer 3 to continuously switch between the ablation mode and the temperature measurement mode to achieve automatic ablation, and automatically determines the ablation endpoint during the ablation process, shortening the operation time and reducing the patient's adverse reactions during the operation.

[0073] 3. The flexible ablation balloon 4 is made of silicone and the flexible electrode 5 is made of a flexible circuit board, which can reduce the patient's discomfort while ensuring wall adhesion.

[0074] It should be noted that the above embodiments are merely examples, and the technical solutions of the various embodiments may be combined and are all within the scope of protection of the present invention.

[0075] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0076] The ultrasonic ablation device and system provided by the present invention are described in detail above. For those skilled in the art, any obvious changes made to the present invention without departing from the essence of the present invention will constitute an infringement of the patent rights of the present invention and will result in corresponding legal liability.

Claims

1. An ultrasonic ablation device, characterized in that Comprising: A control unit for automatic control of ultrasonic ablation; A catheter, the proximal end of the catheter being connected to the control unit, the catheter at least including a water inlet cavity, a water outlet cavity, and a wire cavity through which a wire is disposed; An ultrasonic transducer, disposed at the distal end of the catheter and electrically connected to the control unit through the wire, so as to switch between an ablation mode and a measurement mode under the control of the control unit; wherein, in the ablation mode, the ultrasonic transducer is used for ultrasonic ablation of the area to be ablated; in the measurement mode, the ultrasonic transducer is used for measuring the temperature and tissue morphology of the area to be ablated; A flexible ablation balloon, sleeved outside the ultrasonic transducer and communicating with the water inlet cavity and the water outlet cavity; A flexible electrode, installed outside the flexible ablation balloon and electrically connected to the control unit for detecting impedance; A pressure sensor, installed inside the flexible ablation balloon and electrically connected to the control unit for detecting water pressure; Wherein, the control unit is used to receive the impedance and water pressure, and judge whether the flexible ablation balloon is completely adhered to the wall according to the first judgment logic; The control unit is further used to receive the impedance, water pressure, and the temperature and tissue morphology of the area to be ablated, and control the ultrasonic transducer to switch between the ablation mode and the measurement mode according to the switching logic; The control unit is further used to receive the impedance, water pressure, and the temperature and tissue morphology of the area to be ablated, and judge whether the ablation end point is reached according to the second judgment logic.

2. The ultrasonic ablation device according to claim 1, characterized in that The first judgment logic specifically includes: If the impedance value reaches a preset impedance range and the water pressure reaches a preset water pressure range, it is judged that the flexible ablation balloon is completely adhered to the wall; If the impedance value does not reach the preset impedance range, and / or the water pressure does not reach the preset water pressure range, it is judged that the flexible ablation balloon is not completely adhered to the wall.

3. The ultrasonic ablation device according to claim 1, wherein The switching logic specifically includes: Taking a preset time duration as the switching condition, and performing a switch every preset time duration; Or, the control unit receives the impedance, water pressure, and the temperature and tissue morphology of the area to be ablated, and outputs different powers according to the difference between the temperature of the area to be ablated and a preset temperature; wherein, when calculating the output power, the ultrasonic transducer switches to the measurement mode to measure the temperature of the area to be ablated, so that the control unit calculates the output power; when the calculation of the current output power is completed, the ultrasonic transducer automatically switches to the ablation mode and lasts for a preset time duration until an ultrasonic ablation is completed, and automatically switches to the measurement mode after an ultrasonic ablation is completed to calculate the next output power; the ultrasonic transducer repeatedly switches between the measurement mode and the ablation mode until the ablation end point is reached.

4. The ultrasonic ablation device according to claim 3, wherein The second judgment logic specifically includes: When the temperature of the area to be ablated measured in the measurement mode reaches the preset temperature and remains stable for a preset time duration, and the water pressure and impedance drop to the theoretical value range, it is determined that the ablation end point is reached.

5. The ultrasonic ablation device according to claim 1, characterized in that The control unit at least includes: A main control module for processing signals and data and controlling automatic ablation; A signal generator, connected to the main control module for receiving and sending ultrasonic signals; A power amplifier, connected to the signal generator, for amplifying the ultrasonic signal; A gating module, connected to the power amplifier, for selecting the number of signal channels; A phase voltage and current module, connected to the main control module, for detecting parameters and outputting a matching ultrasonic frequency; The impedance matching module is connected to the main control module and is used to detect the matching impedance and output an ultrasonic signal of matching power.

6. The ultrasonic ablation device according to claim 5, characterized in that: The ultrasonic transducer is connected to the gating module to switch between the ablation mode and the measurement mode according to the number of signal channels; In the ablation mode, the ultrasonic transducer converts the electrical signal into mechanical vibration to continuously generate ultrasonic waves and heats the area to be ablated within the energy focus range of the acoustic wave transmission; In the measurement mode, the ultrasonic transducer converts the pulsed electrical signal into a mechanical signal to generate a single ultrasonic wave, and calculates the tissue morphology change and temperature change by analyzing the echo signal.

7. The ultrasonic ablation device according to claim 1, wherein Also includes: A display, connected to the control unit, for displaying data; An alarm is connected to the control unit to sound an alarm when the data is in an abnormal state.

8. The ultrasonic ablation device according to claim 1, characterized in that: The catheter also has a guidewire cavity, in which a guidewire is passed to control the bending direction of the catheter.

9. The ultrasonic ablation device according to claim 1, characterized in that: The flexible ablation balloon is made of silicone, and the flexible electrode is a flexible circuit board.

10. An ultrasonic ablation system, characterized in that This includes the ultrasonic ablation device as described in any one of claims 1 to 9.

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