Ultrasonic power control method, device, equipment, system and readable storage medium

Abstract

The invention relates to an ultrasonic power control method, device and system and a readable storage medium. The ultrasonic power control method is applied to ultrasonic ablation equipment and comprises the following steps: acquiring ultrasonic output power and transducer temperature of a transducer; under the condition that the ultrasonic output power is not in the specified power range and the temperature of the transducer exceeds the specified temperature range, determining the change trend of the ultrasonic output power relative to the specified power range; based on the change trend, ultrasonic signal parameters matched with the change trend are determined; and ultrasonic signal parameters of the ultrasonic driving signals matched with the change trend are adjusted, so that the ultrasonic output power of the transducer is within a specified power range, and the ultrasonic driving signals are used for driving the transducer to output ultrasonic waves. By adopting the method, the stability of the ultrasonic output power can be improved.

Description

Technical Field

[0001] This application relates to the field of ultrasonic ablation equipment technology, and in particular to an ultrasonic power control method, apparatus, device, system and readable storage medium. Background Technology

[0002] Ultrasonic ablation is a minimally invasive technique widely used in the medical field. It is mainly used to destroy or remove diseased tissue by means of ultrasound waves and has broad application prospects in the medical field.

[0003] Current ultrasonic ablation technology primarily employs a power calibration method. This involves outputting an ultrasonic drive signal at a specified voltage to the transducer, then calculating or testing the ultrasonic power output by the transducer under that signal to fit a mapping curve between the specified voltage and ultrasonic power. When a user requires a specific ultrasonic power output, the corresponding specified voltage can be found through the mapping curve, allowing the ultrasonic ablation device to output the ultrasonic drive signal according to that specified voltage, thereby achieving the transducer's goal of outputting the specified ultrasonic power.

[0004] In an ideal situation, this method of power calibration can achieve good results. However, the transducer connected to the ultrasonic ablation device is obviously difficult to maintain an ideal state during operation, which may lead to unstable ultrasonic output power of the transducer. Summary of the Invention

[0005] In some embodiments, this application provides an ultrasonic power control method, the method comprising:

[0006] To obtain the ultrasonic output power and transducer temperature of the transducer;

[0007] When the ultrasonic output power is not within the specified power range and the transducer temperature exceeds the specified temperature range, determine the trend of ultrasonic output power relative to the specified power range.

[0008] Based on the changing trend, determine the ultrasound signal parameters that match the changing trend;

[0009] The ultrasonic signal parameters of the ultrasonic drive signal are adjusted to match the changing trend so that the ultrasonic output power of the transducer is within a specified power range. The ultrasonic drive signal is used to drive the transducer to output ultrasonic waves.

[0010] In this embodiment, the ultrasonic output power and temperature of the transducer are acquired. If the ultrasonic output power is outside the specified power range and the transducer temperature exceeds the specified temperature range, it indicates that the ultrasonic output power of the transducer is unstable. Therefore, the trend of the ultrasonic output power relative to the specified power range can be determined. Since different trends indicate different causes of ultrasonic output power instability, ultrasonic signal parameters matching the trend can be determined. Thus, by adjusting the ultrasonic signal parameters of the ultrasonic drive signal that match the trend, the ultrasonic output power of the transducer under the drive of the ultrasonic drive signal after parameter adjustment can be kept within the specified power range, thereby improving the stability of the transducer's ultrasonic output power.

[0011] In some embodiments, this application also provides an ultrasonic power control device, the device comprising:

[0012] The acquisition module is used to acquire the ultrasonic output power and transducer temperature of the transducer;

[0013] The trend determination module is used to determine the trend of change of the ultrasonic output power relative to the specified power range when the ultrasonic output power is not within the specified power range and the transducer temperature exceeds the specified temperature range.

[0014] The parameter determination module is used to determine the ultrasound signal parameters that match the changing trend based on the changing trend.

[0015] An adjustment module is used to adjust the ultrasonic signal parameters of the ultrasonic drive signal to match the changing trend, so that the ultrasonic output power of the transducer is within the specified power range, and the ultrasonic drive signal is used to drive the transducer to output ultrasonic waves.

[0016] In some embodiments, this application also provides an ultrasonic ablation device, which includes a main control component and an ultrasonic drive component, wherein the ultrasonic drive component is connected to the main control component; the ultrasonic ablation device is connected to a transducer;

[0017] The ultrasonic drive component is used to generate an ultrasonic drive signal under the control of the main control component, and to feed back the ultrasonic output power of the transducer driven by the ultrasonic drive signal to the main control component.

[0018] The main control unit is used to acquire the ultrasonic output power and transducer temperature of the transducer; when the ultrasonic output power is not within the specified power range and the transducer temperature exceeds the specified temperature range, it determines the trend of the ultrasonic output power relative to the specified power range; based on the trend, it determines the ultrasonic signal parameters that match the trend; and it adjusts the ultrasonic signal parameters of the ultrasonic drive signal that matches the trend so that the ultrasonic output power of the transducer is within the specified power range. The ultrasonic drive signal is used to drive the transducer to output ultrasonic waves.

[0019] In some embodiments, this application also provides an ultrasonic ablation system, which includes an ultrasonic ablation device and a transducer;

[0020] An ultrasonic ablation device is used to acquire the ultrasonic output power and temperature of a transducer; when the ultrasonic output power is not within a specified power range and the transducer temperature exceeds a specified temperature range, it determines the trend of the ultrasonic output power relative to a specified power range; based on the trend, it determines ultrasonic signal parameters that match the trend; and it adjusts the ultrasonic signal parameters of the ultrasonic drive signal that matches the trend so that the ultrasonic output power of the transducer is within a specified power range. The ultrasonic drive signal is used to drive the transducer to output ultrasonic waves.

[0021] A transducer is used to output ultrasonic waves when driven by an ultrasonic drive signal. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A flowchart illustrating an ultrasonic power control method provided for some embodiments of this application;

[0024] Figure 2 This is a schematic diagram of the waveform of the ultrasonic drive signal in some embodiments of this application;

[0025] Figure 3 A schematic flowchart illustrating another ultrasonic power control method provided in some embodiments of this application;

[0026] Figure 4 A schematic flowchart illustrating another ultrasonic power control method provided in some embodiments of this application;

[0027] Figure 5A structural block diagram of an ultrasonic ablation device provided in some embodiments of this application;

[0028] Figure 6 A structural block diagram of the ultrasonic drive component of an ultrasonic ablation device provided in some embodiments of this application;

[0029] Figure 7 A structural block diagram of an ultrasonic ablation device provided for some embodiments of this application;

[0030] Figure 8 A system structure diagram of an ultrasonic ablation system provided for some embodiments of this application;

[0031] Figure 9 This is a partial flowchart of the ultrasonic power control method in some embodiments of this application;

[0032] Figure 10 This is a schematic diagram of another part of the ultrasonic power control method in some embodiments of this application.

[0033] Explanation of reference numerals in the attached figures:

[0034] 100. Ultrasonic ablation equipment; 110. Main control unit; 111. Display drive unit; 112. Display unit; 113. Input / output interface; 114. Memory; 120. Ultrasonic drive unit; 121. Signal control unit; 122. Ultrasonic signal generation unit; 123. Sampling unit; 124. Power amplifier power supply unit; EC1. Voltage sampling circuit; EC2. Current sampling circuit; EC3. Power calculation circuit; EC4. Power amplifier power controller; EC5. Power amplifier power supply circuit; EC6. Signal generator; EC7. Signal amplifier; EC8. Inverter amplifier; EC9. Sine wave generation circuit; 130. Power supply unit;

[0035] 200. Ultrasonic ablation catheter; 210. Balloon; 220. Transducer; 300. Catheter drive handle; 400. Infusion pump; 500. Infusion pump tubing; 600. Foot switch. Detailed Implementation

[0036] It should be understood that the examples and illustrations in this application are for illustrative purposes, and deviations and variations can be constructed and deployed based on the teachings of this application without departing from the scope of this application. Before detailing at least one embodiment of this application, it should be understood that this application is not necessarily limited to the detailed configuration and arrangement of the components and / or methods set forth in the following description and / or illustrated in the drawings and / or embodiments. This application can have other embodiments or can be practiced or implemented in different ways.

[0037] Unless otherwise defined, all technical and / or scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. While similar or equivalent methods and materials to those described in this application may be used to practice or test embodiments of this application, exemplary methods and / or materials are described below. In the event of any conflict, the specification (including definitions) of this application shall prevail. Furthermore, these materials, methods, and embodiments are illustrative only and are not intended to impose necessary limitations.

[0038] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, the terms "first," "second," etc., are used merely for descriptive distinction and have no special meaning.

[0039] like Figure 1 As shown, at least one embodiment of this application provides an ultrasonic power control method, which can be applied to ultrasonic ablation devices. The method includes:

[0040] Step S100: Obtain the ultrasonic output power and transducer temperature of the transducer.

[0041] For example, an ultrasonic ablation device outputs an ultrasonic drive signal to cause a transducer connected to the ultrasonic ablation device to generate ultrasonic waves under the drive of the ultrasonic drive signal. The ultrasonic output power is the acoustic power value of the ultrasonic waves generated by the transducer under the drive of the ultrasonic drive signal.

[0042] In at least one embodiment, after the ultrasonic ablation device outputs an ultrasonic driving signal according to the received target output power, the ultrasonic driving signal is sampled to obtain the sampled signal power of the ultrasonic driving signal; the acoustic-to-electrical conversion efficiency of the connected transducer is obtained, and the sampled signal power is converted according to the acoustic-to-electrical conversion efficiency to obtain the ultrasonic output power of the transducer. It can be understood that the sampled signal power is the electrical power of the ultrasonic driving signal, while the ultrasonic output power of the transducer is the acoustic power of the ultrasonic waves generated by the transducer. The acoustic-to-electrical conversion efficiency of the transducer is the efficiency by which the transducer converts the electrical power of the ultrasonic driving signal into the acoustic power of the ultrasonic waves.

[0043] For example, the acoustic-electric conversion efficiency of a transducer can be detected by a sensor.

[0044] For example, a voltage sampling signal is obtained by voltage sampling of the ultrasonic drive signal, and a current sampling signal is obtained by current sampling of the ultrasonic drive signal. The sampling signal power of the ultrasonic drive signal is obtained from the voltage sampling signal and the current sampling signal, and then converted into the ultrasonic output power corresponding to the transducer. For example, in this embodiment, the output ultrasonic drive signal can be sampled to obtain voltage sampling signals and current sampling signals, which are used to calculate the power sampling value corresponding to a sampling moment as the sampling signal power. Alternatively, the output ultrasonic drive signal can be sampled multiple times to obtain voltage sampling signals and current sampling signals at multiple consecutive sampling moments, which are used to calculate the average value of the power sampling values ​​corresponding to multiple sampling moments as the sampling signal power. Then, the sampling signal power of the ultrasonic drive signal is converted to obtain the ultrasonic output power corresponding to the transducer.

[0045] In at least one embodiment, a temperature sensor may be provided at the transducer to collect the transducer temperature. After obtaining the transducer temperature, the obtained transducer temperature is fed back to the ultrasonic ablation device. In another embodiment, the ultrasonic ablation device is connected to the transducer via a catheter drive handle. The catheter drive handle can acquire an electromotive force (EMF) signal, which is obtained by the temperature sensor collecting the transducer temperature. The EMF signal is used to characterize the transducer temperature, and then the EMF signal is converted into a transducer temperature, which is then output to the ultrasonic ablation device.

[0046] Step S200: When the ultrasonic output power is not within the specified power range and the transducer temperature exceeds the specified temperature range, determine the trend of the ultrasonic output power relative to the specified power range.

[0047] In at least one embodiment, the specified power range can be a pre-set power range or a power range determined based on the target output power. This power range may include the target output power, such as ±2%, ±3%, ±5%, etc. The specified power range can be an open interval, a closed interval, or a half-open / half-closed interval (e.g., left-open / right-closed or left-closed / right-open). The specified temperature range can be a temperature range determined based on the target transducer temperature. This specified temperature range includes the target transducer temperature, such as ±2%, ±3%, ±5%, etc. The specified temperature range can be an open interval, a closed interval, or a half-open / half-closed interval (e.g., left-open / right-closed or left-closed / right-open).

[0048] Taking the case where the specified power range is a closed interval as an example. For instance, the ultrasonic output power can be determined to exceed the specified power range if it is less than the lower limit of the specified power range or greater than the upper limit of the specified power range. Further, if the ultrasonic output power comprises multiple power sample values ​​(e.g., a power sample value obtained by sampling according to the modulation cycle of an ultrasonic drive signal), and a predetermined number of consecutive power sample values ​​are all less than the lower limit of the specified power range or greater than the upper limit of the specified power range, the ultrasonic output power can be determined to exceed the specified power range. Alternatively, the ultrasonic output power can be determined to exceed the specified power range if the ratio between the number of power sample values ​​less than the lower limit of the specified power range and the total number of samples is greater than a predetermined ratio, or if the ratio between the number of power sample values ​​greater than the upper limit of the specified power range and the total number of samples is greater than a predetermined ratio. For example, if 4 out of 5 power sample values ​​are greater than the upper limit of the specified power range, and the ratio between the number of power sample values ​​greater than the upper limit of the specified power range and the total number of samples is 80%, which is greater than a predetermined ratio of 75%, then the ultrasonic output power can be determined to exceed the specified power range.

[0049] Similarly, when the transducer temperature is too high, the transducer's natural resonant frequency will shift, causing the actual received electrical power to differ from the expected electrical power, thus affecting the ultrasonic output power. Taking the case where the specified temperature range is a closed interval as an example, this embodiment can, for instance, determine that the transducer temperature exceeds the specified temperature range if the transducer temperature is below the lower limit of the specified temperature range or above the upper limit of the specified temperature range. Further, if the transducer temperature includes multiple temperature sampling values, and a predetermined number of consecutive temperature sampling values ​​are all below the lower limit of the specified temperature range or above the upper limit of the specified temperature range, it can be determined that the transducer temperature exceeds the specified temperature range. Alternatively, it can be determined that the transducer temperature exceeds the specified temperature range if the ratio between the number of temperature sampling values ​​below the lower limit of the specified temperature range and the total number of samples is greater than a predetermined ratio, or if the ratio between the number of temperature sampling values ​​above the upper limit of the specified temperature range and the total number of samples is greater than a predetermined ratio. For example, if 4 out of 5 temperature samples are greater than the upper limit of the specified temperature range, and the ratio of the number of temperature samples greater than the upper limit of the specified temperature range to the total number of samples is 80%, which is greater than the predetermined ratio of 75%, then it can be determined that the transducer temperature exceeds the specified temperature range.

[0050] Furthermore, when the ultrasonic output power is not within the specified power range and the transducer temperature exceeds the specified temperature range, the trend of change of the ultrasonic output power relative to the specified power range is determined. For example, if the ultrasonic output power is less than the lower limit of the specified power range, the trend of change of the ultrasonic output power relative to the specified power range can be determined as a decreasing trend. If the ultrasonic output power is greater than the upper limit of the specified power range, the trend of change of the ultrasonic output power relative to the specified power range can be determined as an increasing trend. For example, if the ultrasonic output power is less than the reference output power corresponding to the specified power range, the trend of change of the ultrasonic output power relative to the specified power range can also be determined as a decreasing trend. If the ultrasonic output power is greater than the reference output power, the trend of change of the ultrasonic output power relative to the specified power range can be determined as an increasing trend. The reference output power can be the target output power or a specified power value.

[0051] Step S300: Based on the changing trend, determine the ultrasound signal parameters that match the changing trend.

[0052] like Figure 2 As shown, the ultrasonic signal parameters are the specifications describing the ultrasonic drive signal, such as the frequency, amplitude, modulation frequency, and duty cycle of the ultrasonic drive signal. The frequency of the ultrasonic drive signal = 1 / ultrasonic period, the modulation frequency = 1 / modulation period, and the duty cycle = output period / modulation period.

[0053] Since different trends of change are caused by different reasons, the ultrasonic signal parameters related to the cause of each trend can be determined based on the different trends. The transducer vibrates under the drive of an ultrasonic drive signal with a frequency near its natural resonant frequency, thereby generating ultrasonic waves that act on the target tissue. When the transducer operates continuously or is insufficiently cooled, its temperature rises. When the transducer temperature is too high, its natural resonant frequency shifts, usually decreasing, while the frequency of the ultrasonic drive signal output to the transducer remains unchanged. This results in the actual electrical power received by the transducer being lower than the expected electrical power, thus reducing the transducer's efficiency, i.e., reducing the ultrasonic output power. If the amplitude of the ultrasonic drive signal is too high, even if the natural resonant frequency does not shift, the ultrasonic output power may exceed the upper limit of the specified power range. For example, when the trend is decreasing, the frequency of the ultrasonic drive signal can be determined as an ultrasonic signal parameter matching the trend. Subsequently, by adjusting the frequency of the ultrasonic drive signal, it can be matched with the transducer's inherent resonant frequency, so that the ultrasonic output power of the transducer returns to the specified power range under the drive of the parameter-adjusted ultrasonic drive signal. When the trend is increasing, the amplitude of the ultrasonic drive signal can be determined as an ultrasonic signal parameter matching the trend. Subsequently, by adjusting the amplitude of the ultrasonic drive signal, the ultrasonic output power can be reduced, thus restoring the ultrasonic output power of the transducer to the specified power range under the drive of the parameter-adjusted ultrasonic drive signal. Furthermore, when the trend is increasing, the duty cycle of the ultrasonic ablation device can also be determined as an ultrasonic signal parameter matching the trend. Subsequently, by adjusting the duty cycle, the ultrasonic output power can also be reduced, thus restoring the ultrasonic output power of the transducer to the specified power range under the drive of the parameter-adjusted ultrasonic drive signal.

[0054] Step S400: Adjust the ultrasonic signal parameters of the ultrasonic drive signal to match the changing trend so that the ultrasonic output power of the transducer is within the specified power range. The ultrasonic drive signal is used to drive the transducer to output ultrasonic waves.

[0055] In at least one embodiment, based on the changing trend, ultrasonic signal parameters matching the changing trend are determined. The ultrasonic signal parameters of the ultrasonic drive signal matching the changing trend can then be adjusted to ensure the ultrasonic output power of the transducer is within a specified power range. The ultrasonic drive signal is used to drive the transducer to output ultrasonic waves. For example, when the ultrasonic signal parameter is amplitude, the target output power of the transducer can be obtained; a power deviation value is determined based on the target output power and the ultrasonic output power; based on the power deviation value, the amplitude of the ultrasonic drive signal of the ultrasonic ablation device is adjusted so that the ultrasonic output power of the transducer is within a specified power range under the drive of the parameter-adjusted ultrasonic drive signal. When the ultrasonic signal parameter is duty cycle, the target output power of the transducer can be obtained; a power deviation value is determined based on the target output power and the ultrasonic output power; based on the power deviation value, the duty cycle of the ultrasonic drive signal is adjusted so that the ultrasonic output power of the transducer is within a specified power range under the drive of the parameter-adjusted ultrasonic drive signal. When the ultrasonic signal parameter is frequency, the degree of deviation of the inherent resonant frequency can be determined by utilizing the electrical characteristics (impedance, phase difference) associated with the inherent resonant frequency. For example, the impedance and phase difference of the ultrasonic drive signal of the ultrasonic ablation device can be obtained; the frequency adjustment amount can be determined based on the impedance and phase difference; and the frequency of the ultrasonic drive signal can be adjusted according to the frequency adjustment amount so that the ultrasonic output power of the transducer is within the specified power range under the drive of the frequency-adjusted ultrasonic drive signal.

[0056] In at least one embodiment, by acquiring the ultrasonic output power and transducer temperature of the transducer, and considering that the ultrasonic output power is not within a specified power range and the transducer temperature exceeds a specified temperature range, indicating that the ultrasonic output power of the transducer is unstable, the trend of the ultrasonic output power relative to the specified power range can be determined. Since different trends indicate ultrasonic output power instability caused by different reasons, ultrasonic signal parameters matching the trend can be determined based on the trend. By adjusting the ultrasonic signal parameters of the output ultrasonic drive signal, the ultrasonic output power of the transducer under the drive of the ultrasonic drive signal after parameter adjustment is kept within the specified power range, which helps to improve the stability of the ultrasonic output power of the transducer.

[0057] In at least one possible implementation Figure 3 This is a schematic flowchart illustrating another ultrasonic power control method provided in some embodiments of this application. Figure 3 As shown, based on the changing trend, ultrasound signal parameters matching the changing trend are determined, including:

[0058] Step S310: When the trend of change is decreasing, the frequency of the ultrasonic driving signal is determined as an ultrasonic signal parameter that matches the trend of change.

[0059] Step S320: When the trend of change is increasing, the amplitude of the ultrasonic driving signal is determined as an ultrasonic signal parameter that matches the trend of change.

[0060] In some embodiments of this application, when the trend of change is decreasing, the frequency of the ultrasonic drive signal can be determined to match the trend. Subsequently, by adjusting the frequency of the ultrasonic drive signal, it can be matched to the transducer's natural resonant frequency, so that the ultrasonic output power of the transducer, driven by the adjusted ultrasonic drive signal, can be restored to a specified power range. When the trend of change is increasing, the amplitude of the ultrasonic drive signal is determined to match the trend. Subsequently, by reducing the amplitude of the ultrasonic drive signal, the ultrasonic output power can be reduced, so that the ultrasonic output power of the transducer, driven by the adjusted ultrasonic drive signal, can be restored to a specified power range. Since adjusting the amplitude of the ultrasonic drive signal changes only the amplitude and does not affect the waveform, it helps to improve the stability of the adjusted ultrasonic drive signal.

[0061] In at least one embodiment, when the trend is decreasing, it indicates that the decrease in ultrasonic output power may be due to a mismatch between the frequency of the output ultrasonic drive signal and the transducer's inherent resonant frequency. Therefore, the frequency of the ultrasonic drive signal can be determined as an ultrasonic signal parameter that matches the trend. Furthermore, by adjusting the frequency of the ultrasonic drive signal without changing its amplitude, the ultrasonic output power can be restored to a specified power range without increasing power consumption. When the trend is increasing, it indicates that the increase in ultrasonic output power may be due to an excessively high amplitude of the output ultrasonic drive signal. Therefore, the amplitude of the ultrasonic drive signal can be determined as an ultrasonic signal parameter that matches the trend. Thus, by selecting the ultrasonic signal parameter causing the trend based on the different trends in ultrasonic output power, compared to simply adjusting the voltage (i.e., the amplitude of the ultrasonic drive signal) to regulate ultrasonic output power, it helps reduce the energy consumption required to restore the ultrasonic output power to a specified power range.

[0062] In some embodiments, the ultrasonic signal parameters of the output ultrasonic drive signal are adjusted so that the ultrasonic output power of the transducer is within a specified power range. The ultrasonic drive signal is used to drive the transducer to output ultrasonic waves, including:

[0063] Step S410: When the ultrasonic signal parameter is frequency, obtain the impedance and phase difference of the ultrasonic drive signal.

[0064] Step S420: Determine the frequency adjustment amount based on the impedance and phase difference. The frequency adjustment amount is positively correlated with both the impedance and phase difference.

[0065] Step S430: Adjust the frequency of the ultrasonic drive signal according to the frequency adjustment amount so that the ultrasonic output power of the transducer is within the specified power range under the drive of the frequency-adjusted ultrasonic drive signal.

[0066] For example, the phase difference is the phase difference between the voltage sampling signal and the current sampling signal of the ultrasonic drive signal, the impedance is the ratio of the voltage sampling signal and the current sampling signal, the voltage sampling signal is the signal obtained by voltage sampling of the ultrasonic drive signal, and the current sampling signal is the signal obtained by current sampling of the ultrasonic drive signal. That is, the impedance is the equivalent impedance when the ultrasonic drive signal is applied across the transducer, and the phase difference is the difference between the phase of the ultrasonic drive signal and the phase of the input current of the transducer.

[0067] When the transducer's natural resonant frequency changes, the associated electrical characteristics (impedance, phase difference) also change synchronously, establishing a one-to-one correspondence between the natural resonant frequency and these electrical characteristics. In the resonant state (where the frequency of the ultrasonic drive signal matches the natural resonant frequency), the transducer experiences the strongest mechanical vibration, and its equivalent circuit impedance is at its minimum. This is the core electrical characteristic of the natural resonant frequency. Therefore, when the natural resonant frequency changes, the original "impedance minimum point" and "phase zero point" shift with the frequency. Thus, by detecting changes in impedance and phase difference, the change in the natural resonant frequency can be inversely calculated. Therefore, when the ultrasonic signal parameter is frequency, the frequency of the ultrasonic drive signal can be adjusted by acquiring the impedance and phase difference of the ultrasonic drive signal from the ultrasonic ablation device. For example, since the ultrasonic drive signal is output to the transducer, the voltage and current sampling signals corresponding to the ultrasonic drive signal can be obtained by sampling the ultrasonic drive signal. Based on these voltage and current sampling signals, the impedance and phase difference can then be calculated. Regarding impedance, since the impedance minimum also shifts when the inherent resonant frequency shifts, the impedance at the original inherent resonant frequency increases, and the increase is positively correlated with the degree of frequency shift. When the shifted inherent resonant frequency is lower than the original inherent resonant frequency, the transducer is equivalent to a "capacitive load," and the impedance minimum is to the left of the original inherent resonant frequency, thus increasing the impedance at the original inherent resonant frequency. Regarding phase difference, when the shifted inherent resonant frequency is higher than the original inherent resonant frequency, the transducer is equivalent to an "inductive load," with the current phase lagging the voltage phase (positive phase difference); when the shifted inherent resonant frequency is lower than the original inherent resonant frequency, the transducer is equivalent to a "capacitive load," with the current phase leading the voltage phase (negative phase difference). Therefore, the frequency adjustment amount can be determined based on impedance and phase difference, and the frequency adjustment amount is positively correlated with both impedance and phase difference. For example, the two-to-one relationship between frequency adjustment amount and impedance and phase difference can be described by functions, mapping tables, fitting curves, etc. Taking the function as an example, the impedance and phase difference can be substituted into the function to calculate the frequency adjustment amount. Then, the frequency of the ultrasonic drive signal is adjusted according to the frequency adjustment amount so that the ultrasonic output power of the transducer is within the specified power range under the drive of the frequency-adjusted ultrasonic drive signal.

[0068] Because changes in the transducer's inherent resonant frequency will synchronously alter the associated electrical characteristics (impedance, phase difference), a one-to-one correspondence exists between the inherent resonant frequency and these electrical characteristics. Therefore, this method involves acquiring the impedance and phase difference of the ultrasonic drive signal from the ultrasonic ablation device; determining the frequency adjustment amount based on the impedance and phase difference; and adjusting the frequency of the ultrasonic drive signal of the ultrasonic ablation device according to the frequency adjustment amount. Compared to a fixed frequency adjustment amount, this application, by utilizing impedance and phase difference, can more accurately determine the degree of deviation of the inherent resonant frequency, thus improving the accuracy of frequency adjustment.

[0069] In some embodiments, determining the frequency adjustment amount based on impedance and phase difference includes:

[0070] Step S421: Obtain the preset upper limit of impedance and upper limit of phase difference.

[0071] Step S422: Based on the impedance difference between the impedance and the upper limit of the impedance, and the phase difference between the phase difference and the upper limit of the phase difference, determine the impedance weight and the phase difference weight, wherein the impedance weight is positively correlated with the impedance and the phase difference weight is positively correlated with the phase difference.

[0072] Step S423: Based on impedance weight and phase difference weight, perform weighted calculation on impedance and phase difference to obtain frequency adjustment amount.

[0073] For example, the upper limit of impedance is a preset maximum impedance value, and the upper limit of phase difference is a preset maximum phase difference value.

[0074] To further improve the accuracy of frequency adjustment, at least one embodiment can obtain preset upper limits for impedance and phase difference. Impedance weights and phase difference weights are determined based on the impedance difference between the impedance and the upper limit, and the phase difference between the phase difference and the upper limit. The impedance weights are positively correlated with the impedance, and the phase difference weights are positively correlated with the phase difference. For example, the impedance difference can be described as the difference between the impedance and the upper limit, or as the ratio between the impedance and the upper limit. The phase difference can be described as the difference between the phase difference and the upper limit, or as the ratio between the phase difference and the upper limit. Furthermore, the frequency adjustment amount can be obtained by weighting the impedance and phase difference based on the impedance weights and phase difference weights.

[0075] By obtaining preset upper limits for impedance and phase difference, and based on the impedance difference between the upper and lower limits, as well as the phase difference between the upper and lower limits, impedance weights and phase difference weights are determined. Therefore, determining the impedance and phase difference weights jointly based on impedance and phase differences helps balance the impact of these differences. Furthermore, based on these weights, a weighted calculation is performed on the impedance and phase difference to obtain the frequency adjustment amount, which helps improve the accuracy of frequency adjustment.

[0076] In some embodiments, the frequency adjustment amount is obtained by weighting the impedance and phase difference based on impedance weight and phase difference weight, including:

[0077] Step A110: Normalize the impedance to obtain the normalized impedance.

[0078] Step A120: Normalize the phase difference to obtain the normalized phase difference.

[0079] Step A130: Based on the impedance weight and phase difference weight, perform a weighted calculation on the normalized impedance and normalized phase difference to obtain the frequency adjustment amount.

[0080] Because impedance and phase difference are two electrical parameters with different dimensions, in order to further improve the accuracy of the frequency adjustment, the impedance can be normalized to obtain a normalized impedance, and the phase difference can be normalized to obtain a normalized phase difference. Then, based on the impedance weight and phase difference weight, the normalized impedance and normalized phase difference are weighted and calculated to obtain the frequency adjustment. It is understood that in this embodiment, the normalized impedance and normalized phase difference can be directly weighted using the impedance weight and phase difference weight, and the calculated value is used as the frequency adjustment. Alternatively, the calculated value can be corrected, and the corrected calculated value is used as the frequency adjustment. For example, the correction method includes at least one of multiplying or dividing by a predetermined correction coefficient, increasing or subtracting a predetermined correction value, etc. For example, the formula for calculating the frequency adjustment can be as follows:

[0081]

[0082] Where W1 is the impedance weight and W2 is the phase difference weight. N1 and N2 are integers between 1 and 10, used to normalize the impedance Z and phase difference θ.

[0083] For example, the formulas for calculating impedance weight and phase difference weight can be as follows:

[0084] , , , .

[0085] Where z is the impedance and θ is the phase difference. For the preset upper limit of impedance, The upper limit of the phase difference is set in advance.

[0086] In this embodiment, by normalizing the impedance and the phase difference, and then by weighting the normalized impedance and the normalized phase difference according to the impedance weight and the phase difference weight, the dimensions of the two values ​​with large differences are made consistent, which helps to improve the accuracy of the frequency adjustment.

[0087] In some embodiments, the ultrasonic signal parameters of the output ultrasonic drive signal are adjusted so that the ultrasonic output power of the transducer is within a specified power range. The ultrasonic drive signal is used to drive the transducer to output ultrasonic waves, including:

[0088] Step S440: Under the condition that the ultrasonic signal parameter is amplitude, obtain the target output power of the transducer.

[0089] Step S450: Determine the power deviation value based on the target output power and the ultrasonic output power.

[0090] Step S460: Based on the power deviation value, determine the amplitude adjustment coefficient, which is positively correlated with the power deviation value.

[0091] Step S470: Adjust the amplitude of the ultrasonic drive signal of the ultrasonic ablation device according to the amplitude adjustment coefficient so that the ultrasonic output power of the transducer is within the specified power range under the drive of the ultrasonic drive signal after parameter adjustment.

[0092] For example, the target output power is the ultrasonic output power of the desired ultrasonic drive signal.

[0093] In at least one embodiment, when the ultrasonic signal parameter is amplitude, the target output power of the transducer is obtained; a power deviation value is determined based on the target output power and the ultrasonic output power. Exemplarily, the power difference between the target output power and the ultrasonic output power can be used as the power deviation value, or the power difference can be corrected, and the corrected power difference can be used as the power deviation value. For example, the correction method includes at least one of multiplying or dividing by a predetermined correction coefficient, increasing or subtracting a predetermined correction value, etc. Furthermore, an amplitude adjustment coefficient can be determined based on the power deviation value, and the amplitude adjustment coefficient is positively correlated with the power deviation value. Exemplarily, this embodiment can describe the correspondence between the amplitude adjustment coefficient and the power deviation value through functions, mapping tables, fitting curves, etc. Taking a function as an example, this embodiment can substitute the power deviation value into the function to calculate the amplitude adjustment coefficient. The amplitude of the output ultrasonic drive signal is adjusted according to the amplitude adjustment coefficient so that the ultrasonic output power of the transducer is within a specified power range under the drive of the parameter-adjusted ultrasonic drive signal.

[0094] Based on the power deviation between the target output power and the ultrasonic output power, an amplitude adjustment coefficient is determined so that the degree of adjustment of the amplitude of the ultrasonic drive signal of the ultrasonic ablation device is related to the power deviation value, which is beneficial to quickly adjust the ultrasonic output power to the specified power range.

[0095] In some embodiments, determining the amplitude adjustment coefficient based on the power deviation value further includes:

[0096] Step S461: Obtain the slope of the power change of the ultrasonic output power.

[0097] Step S462: Based on the power deviation value and the power change slope, determine the comprehensive power deviation. The comprehensive power deviation is positively correlated with both the power deviation value and the power change slope.

[0098] Step S463: Determine the amplitude adjustment coefficient based on the comprehensive power deviation. The amplitude adjustment coefficient is positively correlated with the comprehensive power deviation.

[0099] For example, the slope of the power change is the slope value of the ultrasonic output power over time.

[0100] For example, the power difference between the current ultrasonic output power and the ultrasonic output power a predetermined time ago can be obtained, and the ratio of this difference to the predetermined time can be used to obtain the power change slope. Alternatively, the sampled ultrasonic output powers can be fitted into a power curve, and the slope value at the current ultrasonic output power can be determined as the power change slope. Then, based on the power deviation value and the power change slope, a comprehensive power deviation can be determined, which is positively correlated with both the power deviation value and the power change slope. For example, the product of the power deviation value and the power change slope can be used as the comprehensive power deviation, or the product can be corrected, and the corrected product can be used as the comprehensive power deviation. For example, the correction method includes at least one of multiplying or dividing by a predetermined correction coefficient, increasing or decreasing a predetermined correction value, etc. Then, an amplitude adjustment coefficient is determined based on the comprehensive power deviation, which is positively correlated with the comprehensive power deviation. For example, this embodiment can describe the correspondence between the amplitude adjustment coefficient and the comprehensive power deviation through functions, mapping tables, fitted curves, etc. Taking a function as an example, the comprehensive power deviation can be substituted into the function to calculate the amplitude adjustment coefficient. For example, the formula for calculating the amplitude adjustment factor can be shown below:

[0101]

[0102] in, This is the proportionality coefficient. This is the power deviation value. The absolute value of the slope of the power change. This is the calibration coefficient.

[0103] By determining the comprehensive power deviation based on the power deviation value and the power change slope, and then determining the amplitude adjustment coefficient based on the comprehensive power deviation, the degree of adjustment of the amplitude of the ultrasonic drive signal of the ultrasonic ablation device is not only related to the power deviation value, but also to the power change rate, which is conducive to faster response of ultrasonic output power and rapid adjustment to the specified power range.

[0104] Figure 4 This is a schematic flowchart illustrating another ultrasonic power control method provided in some embodiments of this application. Figure 4 As shown, the method also includes:

[0105] Step S500: Obtain the target transducer temperature.

[0106] Step S600: Determine the temperature deviation value based on the target transducer temperature and the transducer temperature.

[0107] Step S700: Based on the temperature deviation value, determine the injection adjustment coefficient, which is positively correlated with the temperature deviation value.

[0108] Step S800: Adjust the parameters of the injection pump transmitted to the injection pump according to the injection adjustment coefficient so that the temperature of the transducer after the injection pump parameters are adjusted is within the specified temperature range, wherein the injection pump is used to regulate the temperature of the transducer.

[0109] For example, the target transducer temperature is the temperature value that the transducer is expected to maintain, and the filling adjustment coefficient is a coefficient value used to adjust the filling pump parameters transmitted to the filling pump. The filling pump parameters are parameters related to the cooling efficiency of the transducer, such as filling pump speed, opening degree, and other parameters that affect the coolant flow rate and volume. The filling pump is a device used to regulate the temperature of the transducer.

[0110] Because continuous operation or insufficient cooling of the transducer can cause its temperature to rise, and excessively high transducer temperatures can cause a shift in the transducer's natural resonant frequency, thus affecting the ultrasonic output power, a target transducer temperature can be obtained. Based on this target and the actual transducer temperature, a temperature deviation value can be determined. For example, the temperature difference between the target and actual transducer temperatures can be used as the temperature deviation value, or this temperature difference can be corrected, and the corrected temperature difference can be used as the temperature deviation value. For example, correction methods include at least one of multiplying or dividing by a predetermined correction factor, increasing or decreasing a predetermined correction value, etc. Then, based on the temperature deviation value, a perfusion adjustment factor is determined, which is positively correlated with the temperature deviation value. For example, the correspondence between the perfusion adjustment factor and the temperature deviation value can be described using functions, mapping tables, fitted curves, etc. Taking a function as an example, the temperature deviation value can be substituted into the function to calculate the perfusion adjustment factor. Then, the parameters of the injection pump transmitted to the injection pump are adjusted according to the injection adjustment coefficient so that the temperature of the transducer after the injection pump parameters are adjusted is within the specified temperature range, wherein the injection pump is used to regulate the temperature of the transducer.

[0111] By determining the infusion adjustment coefficient based on the temperature deviation between the target transducer temperature and the actual transducer temperature, the parameters of the infusion pump in the ultrasonic ablation equipment are adjusted to restore the transducer temperature to within the specified temperature range. Since transducer temperature affects its resonant frequency, maintaining the transducer temperature within the specified range helps reduce instability in ultrasonic output power caused by fluctuations in the resonant frequency.

[0112] It is understood that the implementation methods of steps S500 to S800 can be executed simultaneously with the implementation methods of steps S100 to S400, or they can be executed sequentially. For example, the implementation methods of steps S500 to S800 can be executed first, followed by the implementation methods of steps S100 to S400, or vice versa. This application does not impose any limitations on this.

[0113] In some embodiments, determining the infusion adjustment coefficient based on the temperature deviation value further includes:

[0114] Step S710: Obtain the temperature change slope of the transducer temperature.

[0115] Step S720: Determine the overall temperature deviation based on the temperature deviation value and the slope of temperature change.

[0116] Step S730: Determine the injection adjustment coefficient based on the overall temperature deviation. The injection adjustment coefficient is positively correlated with the overall temperature deviation.

[0117] For example, the slope of the temperature change is the slope of the transducer temperature over time.

[0118] For example, the temperature difference between the current transducer temperature and the transducer temperature a predetermined time ago can be obtained, and the ratio of this difference to the predetermined time can be used to obtain the temperature change slope. Alternatively, the sampled transducer temperatures can be fitted into a temperature curve, and the slope value at the current transducer temperature can be determined as the temperature change slope. Furthermore, this embodiment can determine the comprehensive temperature deviation of the ultrasonic ablation device based on the temperature deviation value and the temperature change slope. The comprehensive temperature deviation is positively correlated with both the temperature deviation value and the temperature change slope. For example, this embodiment can use the product of the temperature deviation value and the temperature change slope as the comprehensive temperature deviation of the ultrasonic ablation device, or it can correct this product and use the corrected product as the comprehensive temperature deviation. For example, the correction method includes at least one of multiplying or dividing by a predetermined correction coefficient, increasing or subtracting a predetermined correction value, etc. Then, a perfusion adjustment coefficient is determined based on the comprehensive temperature deviation, and the perfusion adjustment coefficient is positively correlated with the comprehensive temperature deviation. For example, this embodiment can describe the correspondence between the perfusion adjustment coefficient and the comprehensive temperature deviation using functions, mapping tables, fitted curves, etc. Taking the function as an example, in this embodiment, the comprehensive temperature deviation can be substituted into the function to calculate the injection adjustment coefficient.

[0119] Figure 5 This is a structural block diagram of an ultrasonic ablation device provided for some embodiments of this application. For example... Figure 5As shown, the ultrasonic ablation device 100 includes a main control component 110 and an ultrasonic drive component 120, with the ultrasonic drive component 120 connected to the main control component 110; the ultrasonic ablation device 100 is connected to the transducer 220.

[0120] The ultrasonic drive component 120 is used to generate an ultrasonic drive signal under the control of the main control component 110, and to feed back the ultrasonic output power of the transducer driven by the ultrasonic drive signal to the main control component 110.

[0121] The main control unit 110 is used to acquire the ultrasonic output power and transducer temperature of the transducer 220; when the ultrasonic output power is not within the specified power range and the transducer temperature exceeds the specified temperature range, it determines the trend of the ultrasonic output power relative to the specified power range; based on the trend, it determines the ultrasonic signal parameters that match the trend; and it adjusts the ultrasonic signal parameters of the ultrasonic drive signal output by the ultrasonic ablation device 100 so that the ultrasonic output power of the transducer 220 is within the specified power range. The ultrasonic drive signal is used to drive the transducer to output ultrasonic waves.

[0122] For example, a temperature sensor can be installed on the transducer 220 to collect the temperature of the transducer and obtain the transducer temperature. For example, the temperature sensor is a thermocouple. The thermocouple transmits the electromotive force signal generated based on the temperature of the transducer 220 to the main control unit 110. The main control unit 110 converts the electromotive force signal into a temperature value to obtain the transducer temperature. When the transducer 220 is connected to the ultrasonic ablation device 100 via a catheter drive handle, the transducer 220 is equipped with a temperature sensor (such as a thermocouple). After the temperature sensor collects the electromotive force signal representing the temperature of the transducer 220, it transmits the electromotive force signal to the processing chip in the catheter drive handle. The processing chip in the catheter drive handle converts the electromotive force signal into a temperature value to obtain the transducer temperature, which is then transmitted to the main control unit 110.

[0123] In some embodiments, the main control component 110 is also used to execute the ultrasonic frequency control method of the above embodiments of this application.

[0124] The ultrasonic ablation device 100 includes an ultrasonic drive component 120, which generates an ultrasonic drive signal under the control of the main control component 110 and synchronously feeds back the ultrasonic output power of the transducer driven by the ultrasonic drive signal to the main control component 110, thereby realizing real-time monitoring of the ultrasonic output power. Furthermore, the main control component 110, by considering the different trends in ultrasonic output power changes caused by various reasons when the ultrasonic output power exceeds a specified power range and the transducer temperature exceeds a specified temperature range, selects and adjusts ultrasonic signal parameters that match the changing trends, restoring the ultrasonic output power to within the specified power range. This helps improve the stability of the ultrasonic ablation device 100's output power. It is understood that the transducer temperature can be fed back to the main control component 110 by the transducer 220 or by other devices that detect the temperature of the transducer 220.

[0125] In some embodiments, the signal control unit 121 receives drive signal parameters from the main control component 110, including but not limited to duty cycle, frequency, amplitude and period; and controls the ultrasonic signal generation unit 122 to output ultrasonic drive signals based on the drive signal parameters.

[0126] like Figure 6 As shown, in some embodiments, the ultrasonic driving component 120 includes a signal control unit 121, an ultrasonic signal generating unit 122, and a sampling unit 123; the output terminal of the signal control unit 121 is connected to the input terminal of the ultrasonic signal generating unit 122, the control terminal of the signal control unit 121 is connected to the output terminal of the sampling unit 123, and the sampling unit 123 is located between the output terminal of the ultrasonic signal generating unit 122 and the input terminal of the transducer 220.

[0127] The signal control unit 121 is used to control the ultrasonic signal generating unit 122 under the control of the main control component 110.

[0128] The ultrasonic signal generating unit 122 is used to generate ultrasonic drive signals under the control of the signal control unit 121.

[0129] The sampling unit 123 is used to sample the ultrasonic output power of the transducer 220 driven by the ultrasonic driving signal, and to feed back the ultrasonic output power to the main control component 110 through the signal control unit 121.

[0130] In this embodiment, the ultrasonic driving component 120 includes a signal control unit 121, an ultrasonic signal generating unit 122, and a sampling unit 123. The output terminal of the signal control unit 121 is connected to the input terminal of the ultrasonic signal generating unit 122, and the control terminal of the signal control unit 121 is connected to the output terminal of the sampling unit 123. The sampling unit 123 is located between the output terminal of the ultrasonic signal generating unit 122 and the input terminal of the transducer 220. Thus, the ultrasonic driving component 120 generates an ultrasonic driving signal under the control of the main control component 110, and synchronously feeds back to the main control component 110 the ultrasonic output power of the transducer 220 driven by the ultrasonic driving signal, thereby realizing real-time monitoring of the ultrasonic output power.

[0131] like Figure 6 As shown, in some embodiments, the ultrasonic drive component 120 further includes a power amplifier power supply unit 124.

[0132] The power amplifier power supply unit 124 is used to adjust the amplitude of the ultrasonic drive signal under the control of the signal control unit 121.

[0133] In this embodiment, the ultrasonic drive component 120 also includes a power amplifier power supply unit 124, which can adjust the amplitude of the output ultrasonic drive signal under the control of the signal control unit 121. Thus, when the ultrasonic signal parameter is amplitude, the amplitude of the ultrasonic drive signal is adjusted according to the amplitude adjustment coefficient so that the ultrasonic output power output by the transducer 220 is within the specified power range under the drive of the ultrasonic drive signal with the amplitude adjusted.

[0134] like Figure 7 As shown, in some embodiments, the sampling unit 123 includes a voltage sampling circuit EC1, a current sampling circuit EC2, and a power calculation circuit EC3; the input terminals of the voltage sampling circuit EC1 and the current sampling circuit EC2 are respectively connected to the output terminal of the ultrasonic signal generating unit 122, and the output terminals of the voltage sampling circuit EC1 and the current sampling circuit EC2 are respectively connected to the input terminal of the power calculation circuit EC3; the output terminal of the power calculation circuit EC3 is connected to the signal control unit 121.

[0135] The voltage sampling circuit EC1 is used to sample the voltage of the ultrasonic drive signal to obtain the voltage sampling signal.

[0136] The current sampling circuit EC2 is used to sample the ultrasonic drive signal to obtain the current sampling signal.

[0137] The power calculation circuit EC3 is used to obtain the power of the sampled signal based on the voltage and current sampling signals;

[0138] The power calculation circuit EC3 is also used to obtain the acoustic-electric conversion efficiency of the transducer 220, and to convert the sampled signal power through the acoustic-electric conversion efficiency to obtain the ultrasonic output power of the ultrasonic ablation device 100.

[0139] In this embodiment, the sampling unit 123 includes a voltage sampling circuit EC1, a current sampling circuit EC2, and a power calculation circuit EC3. The sampling unit 123 can sample the ultrasonic drive signal to obtain voltage and current sampling signals, calculate the sampling signal power, and then, using the acoustic-to-electrical conversion efficiency of the transducer 220, convert the sampling signal power into the ultrasonic output power of the transducer 220. Of course, the power calculation circuit EC3 can also be used to calculate the impedance and phase difference based on the voltage and current sampling signals of the ultrasonic drive signal.

[0140] In addition, such as Figure 7 As shown, the main control unit 110 can also be connected to the display unit 112 via the display driver unit 111. The display unit 112 can be a touch screen, monitor, television, or other devices. The main control unit 110 can also be provided with an input / output interface 113 for data transmission with other devices. The main control unit 110 can also be provided with a memory 114 for storing computer programs, data, etc. The ultrasonic ablation device 100 also includes a power supply unit 130, which provides power to the ultrasonic ablation device 100. The power amplifier power supply unit 124 can also include a power amplifier power controller EC4 and a power amplifier power circuit EC5. The power amplifier power circuit EC5 is connected to the power supply unit 130 and is used to receive the power transmitted by the power supply unit 130. The power amplifier power controller EC4 is connected to the signal control unit 121 and is used to adjust the amplitude of the ultrasonic drive signal under the control of the signal control unit 121. The ultrasonic signal generation unit 122 includes a signal generator EC6, a signal amplifier EC7, an inverter amplifier EC8, and a sine wave generation circuit EC9 connected in sequence. The signal generator EC6 is connected to the signal control unit 121. The signal generator EC6 is used to generate a voltage signal of a preset frequency. The signal amplifier EC7 is used to amplify the voltage signal of the preset frequency and generate two complementary square wave signals. The inverter amplifier EC8 is used to invert the complementary square wave signals to generate an inverter square wave signal, and amplifies the inverter square wave signal through the power amplifier unit to obtain an inverter amplified signal. The sine wave generation circuit EC9 is used to convert the inverter amplified signal into a sine wave signal to obtain an ultrasonic drive signal, and outputs the ultrasonic drive signal to the transducer 220 to generate ultrasonic waves.

[0141] like Figure 8As shown, an ultrasonic ablation system is provided in some embodiments of this application. The ultrasonic ablation system includes an ultrasonic ablation device 100 and a transducer 220.

[0142] The ultrasonic ablation device 100 is used to acquire the ultrasonic output power and transducer temperature of the transducer 220; when the ultrasonic output power is not within the specified power range and the transducer temperature exceeds the specified temperature range, it determines the trend of the ultrasonic output power relative to the specified power range; based on the trend, it determines the ultrasonic signal parameters that match the trend, and adjusts the ultrasonic signal parameters of the output ultrasonic drive signal so that the ultrasonic output power of the transducer 220 is within the specified power range, and the ultrasonic drive signal is used to drive the transducer 220 to output ultrasonic waves.

[0143] Transducer 220 is used to generate ultrasonic waves under the drive of an ultrasonic drive signal.

[0144] like Figure 8 As shown, in some embodiments, the ultrasonic ablation system further includes an ultrasonic ablation catheter 200, the working end of which is provided with a balloon 210, and a transducer 220 is located inside the balloon 210.

[0145] It should be noted that the working end refers to the end of the ultrasonic ablation catheter 200 and at least some of the components constituting the ultrasonic ablation catheter 200 that is exemplarily far away from the operator during use (or, the working end refers to the end of the ultrasonic ablation catheter 200 and at least some of the components constituting the ultrasonic ablation catheter 200 that exemplarily first contacts / intervenes in the biological tissue when used on a biological body), while the operating end refers to the end of the ultrasonic ablation catheter 200 and at least some of the components constituting the ultrasonic ablation catheter 200 that is exemplarily close to the operator during operation (or, the operating end refers to the end of the ultrasonic ablation catheter 200 and at least some of the components constituting the ultrasonic ablation catheter 200 that is exemplarily far away from the biological tissue than the working end when used on a biological body).

[0146] In this embodiment, the working end of the ultrasonic ablation catheter 200 is provided with a balloon 210 and a transducer 220 located inside the balloon 210. After the balloon 210 is inflated, it makes good contact with the target tissue (such as the sympathetic nerves in the inner wall of the renal artery) to ensure that the ultrasonic energy emitted by the transducer 220 can be uniformly transmitted.

[0147] like Figure 8 As shown, in some embodiments, the ultrasonic ablation system further includes a catheter drive handle 300;

[0148] The conduit drive handle 300 is used to acquire an electromotive force signal, which is used to characterize the temperature of the transducer 220. The electromotive force signal is obtained by a temperature sensor that collects the temperature of the transducer. The temperature sensor is located on the transducer.

[0149] The catheter drive handle is also used to convert electromotive force signals into transducer temperature and to output the transducer temperature to the ultrasonic ablation device.

[0150] The input end of the catheter drive handle 300 is connected to the ultrasonic ablation device 100, and the output end of the catheter drive handle 300 is connected to the ultrasonic ablation catheter 200. Thus, a temperature sensor (such as a thermocouple) is installed on the transducer 220. After the temperature sensor collects the electromotive force signal characterizing the temperature of the transducer 220, it transmits the electromotive force signal to the processing chip in the catheter drive handle 300. The processing chip in the catheter drive handle 300 converts the electromotive force signal into a temperature value to obtain the transducer temperature, which is then transmitted to the main control component 110 of the ultrasonic ablation device 100.

[0151] like Figure 8 As shown, in some embodiments, the ultrasonic ablation system further includes a perfusion pump 400 and a perfusion pump tubing 500.

[0152] The infusion pump 400 is communicatively connected to the ultrasonic ablation device 100 and is connected to the ultrasonic ablation catheter 200 through the infusion pump tube 500.

[0153] The infusion pump 400 is used to flow coolant through the balloon 210 via the infusion pump pipe 500 under the control of the ultrasonic ablation device 100, so as to regulate the temperature of the transducer 220.

[0154] In this embodiment, during the operation of the ultrasonic ablation system, the surface temperature of the transducer 220 becomes higher after working for a period of time. As a result, the infusion pump 400 infuses coolant (usually sterile water for injection) into the ultrasonic ablation catheter 200 through the infusion pump tube 500. The coolant circulates in the balloon 210 to regulate the temperature of the transducer 220.

[0155] like Figure 8 As shown, in some embodiments, the transducer 220 is provided with a temperature detector for measuring the transducer temperature of the transducer 220.

[0156] In this embodiment, a temperature sensor 221 is provided on the transducer 220 to realize real-time monitoring of the transducer temperature.

[0157] like Figure 8 As shown, in some embodiments, the ultrasonic ablation system also includes a foot switch 600, which is communicatively connected to the ultrasonic ablation device 100.

[0158] The foot switch 600 is used to output a foot pedal signal to the ultrasonic ablation device 100 through the contact status;

[0159] The ultrasonic ablation device 100 is also used to receive foot pedal signals and determine the target output power based on the foot pedal signals.

[0160] The ultrasonic ablation system also includes a foot switch 600, which is communicatively connected to the ultrasonic ablation device 100. Thus, when the foot switch 600 is operated, the ultrasonic ablation device 100 can determine the target output power based on the received foot signal, thereby achieving on-demand adjustment of the ultrasonic output power.

[0161] like Figure 9 As shown in one specific embodiment, after the ultrasonic ablation device outputs an ultrasonic driving signal (i.e., the ultrasonic signal in the figure), it detects that the ultrasonic output power of the ultrasonic driving signal deviates from the specified power range. It then determines whether the power change trend of the ultrasonic output power is decreasing. If the power change trend is decreasing, it further determines whether the transducer temperature deviates from the specified temperature range. If the transducer temperature deviates from the specified temperature range, it calculates the impedance and phase difference of the ultrasonic driving signal, and calculates the temperature deviation value of the transducer temperature (i.e., the difference between the transducer temperature and the target transducer temperature) and the temperature change slope. Then, based on the temperature deviation value and the temperature change slope, the infusion rate of the infusion pump can be increased. The increase in infusion rate is positively correlated with both the temperature deviation value and the temperature change slope. The frequency of the ultrasonic driving signal can also be decreased based on the impedance and phase difference. The decrease in the frequency of the ultrasonic driving signal is positively correlated with both the impedance and the phase difference. Finally, it is determined whether the ultrasonic output power has recovered to the specified power range. If the ultrasonic output power has not recovered to the specified power range, it is further determined whether the transducer temperature has recovered to the specified temperature range. If the transducer temperature does not recover to the specified temperature range, return to the steps of calculating the impedance and phase difference corresponding to the ultrasonic drive signal, and calculating the temperature deviation and temperature change slope of the transducer temperature. If the transducer temperature recovers to the specified temperature range, recalculate the impedance and phase difference corresponding to the ultrasonic drive signal, and reduce the frequency of the ultrasonic drive signal based on the impedance and phase difference until the ultrasonic output power recovers to the specified power range. If the ultrasonic output power recovers to the specified power range, but the transducer temperature does not recover to the specified temperature range, recalculate the temperature deviation and temperature change slope of the transducer temperature, and increase the infusion rate of the infusion pump based on the temperature deviation and temperature change slope until the transducer temperature recovers to the specified temperature range.

[0162] See Figure 10If the power change trend is not decreasing, then it is further determined whether the transducer temperature deviates from the specified temperature range. If the transducer temperature does not deviate from the specified temperature range, then the power deviation value of the ultrasonic output power (i.e., the difference between the ultrasonic output power and the target output power) and the power change slope are calculated. Based on the power deviation value and the power change slope, the amplitude of the ultrasonic drive signal (i.e., the output voltage in the figure) is reduced. The magnitude of the reduction in the amplitude of the ultrasonic drive signal is positively correlated with both the power deviation value and the power change slope, until the ultrasonic output power recovers to the specified power range. If the transducer temperature deviates from the specified temperature range, then the power deviation value and the power change slope of the ultrasonic output power are calculated, as well as the temperature deviation value and the temperature change slope of the transducer temperature are calculated. Then, based on the temperature deviation value and the temperature change slope, the infusion rate of the infusion pump is increased. The magnitude of the increase in the infusion rate is positively correlated with both the temperature deviation value and the temperature change slope. Furthermore, based on the power deviation value and the power change slope, the amplitude of the ultrasonic drive signal is reduced, thereby determining whether the ultrasonic output power has recovered to the specified power range. If the ultrasonic output power does not recover to the specified power range, the process further determines whether the transducer temperature has recovered to the specified temperature range. If the transducer temperature does not recover to the specified temperature range, the process returns to the steps of calculating the power deviation and power change slope of the ultrasonic output power, and calculating the temperature deviation and temperature change slope of the transducer temperature. If the transducer temperature recovers to the specified temperature range, the power deviation and power change slope of the ultrasonic output frequency are calculated again, and the amplitude of the ultrasonic drive signal is reduced according to the power deviation and power change slope until the ultrasonic output power recovers to the specified power range. If the ultrasonic output power recovers to the specified power range, but the transducer temperature does not recover to the specified temperature range, the temperature deviation and temperature change slope of the transducer temperature are calculated again, and the infusion rate of the infusion pump is increased according to the temperature deviation and temperature change slope until the transducer temperature recovers to the specified temperature range.

[0163] Based on the same inventive concept, this application also provides a power control device for implementing the ultrasonic power control method described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations in one or more power control device embodiments provided below can be found in the limitations of the ultrasonic power control method described above, and will not be repeated here.

[0164] Some embodiments of this application also provide an ultrasonic power control device, which includes: an acquisition module, a trend determination module, a parameter determination module, and an adjustment module, wherein:

[0165] The acquisition module is used to acquire the ultrasonic output power and transducer temperature of the transducer.

[0166] The trend determination module is used to determine the trend of ultrasonic output power relative to a specified power range when the ultrasonic output power is not within the specified power range and the transducer temperature exceeds the specified temperature range.

[0167] The parameter determination module is used to determine the ultrasound signal parameters that match the changing trend.

[0168] An adjustment module is used to adjust the ultrasonic signal parameters of the ultrasonic drive signal to match the changing trend, so that the ultrasonic output power of the transducer is within a specified power range. The ultrasonic drive signal is used to drive the transducer to output ultrasonic waves.

[0169] In some embodiments, the parameter determination module is further configured to:

[0170] When the trend is decreasing, the frequency of the ultrasonic driving signal is determined to be the ultrasonic signal parameter that matches the trend; when the trend is increasing, the amplitude of the ultrasonic driving signal is determined to be the ultrasonic signal parameter that matches the trend.

[0171] In some embodiments, the adjustment module is further configured to:

[0172] When the ultrasonic signal parameter is frequency, the impedance and phase difference of the ultrasonic drive signal of the ultrasonic ablation device are obtained. Based on the impedance and phase difference, the frequency adjustment amount is determined. The frequency adjustment amount is positively correlated with both the impedance and phase difference. The frequency of the ultrasonic drive signal is adjusted according to the frequency adjustment amount so that the ultrasonic output power of the transducer is within the specified power range under the drive of the frequency-adjusted ultrasonic drive signal.

[0173] In some embodiments, the adjustment module is further configured to:

[0174] Obtain the preset upper limit of impedance and upper limit of phase difference. Determine the impedance weight based on the impedance difference between the impedance and the upper limit of impedance. The impedance weight is positively correlated with the impedance. Determine the phase difference weight based on the phase difference between the phase difference and the upper limit of phase difference. The phase difference weight is positively correlated with the phase difference. Based on the impedance weight and the phase difference weight, perform a weighted calculation on the impedance and the phase difference to obtain the frequency adjustment amount.

[0175] In some embodiments, the adjustment module is further configured to:

[0176] The impedance is normalized to obtain the normalized impedance, and the phase difference is normalized to obtain the normalized phase difference. Based on the impedance weight and the phase difference weight, the normalized impedance and the normalized phase difference are weighted and calculated to obtain the frequency adjustment amount.

[0177] In some embodiments, the adjustment module is further configured to:

[0178] Given the amplitude of the ultrasonic signal parameters, the target output power of the transducer is obtained. Based on the target output power and the ultrasonic output power, the power deviation value is determined. Based on the power deviation value, the amplitude adjustment coefficient is determined. The amplitude adjustment coefficient is positively correlated with the power deviation value. The amplitude of the ultrasonic drive signal of the ultrasonic ablation device is adjusted according to the amplitude adjustment coefficient so that the ultrasonic output power of the transducer is within the specified power range under the drive of the ultrasonic drive signal with adjusted parameters.

[0179] In some embodiments, the adjustment module is further configured to:

[0180] The slope of the ultrasonic output power change is obtained. Based on the power deviation value and the slope of the power change, the comprehensive power deviation is determined. The comprehensive power deviation is positively correlated with both the power deviation value and the slope of the power change. The amplitude adjustment coefficient is determined based on the comprehensive power deviation, and the amplitude adjustment coefficient is positively correlated with the comprehensive power deviation.

[0181] In some embodiments, the power control device further includes a temperature control module for:

[0182] The target transducer temperature is obtained. Based on the target transducer temperature and the transducer temperature, the temperature deviation value is determined. Based on the temperature deviation value, the infusion adjustment coefficient is determined. The infusion adjustment coefficient is positively correlated with the temperature deviation value. The infusion pump parameters transmitted from the ultrasonic ablation device to the infusion pump are adjusted according to the infusion adjustment coefficient so that the transducer temperature after the infusion pump parameters are adjusted is within the specified temperature range. The infusion pump is used to regulate the temperature of the transducer.

[0183] In some embodiments, the temperature control module is further used for:

[0184] The slope of the temperature change of the transducer is obtained. Based on the temperature deviation value and the slope of the temperature change, the comprehensive temperature deviation is determined. The injection adjustment coefficient is determined according to the comprehensive temperature deviation. The injection adjustment coefficient is positively correlated with the comprehensive temperature deviation.

[0185] Each module in the aforementioned power control device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in hardware within or independently of the processor in the ultrasonic ablation device, or stored in software in the memory of the main control unit, so that the processor can call and execute the corresponding operations of each module.

[0186] In one embodiment, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the above embodiments.

[0187] In one embodiment, this application provides a computer program product including a computer program that, when executed by a processor, implements the steps of the above embodiments.

[0188] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data must comply with relevant regulations.

[0189] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, artificial intelligence (AI) processors, etc., and are not limited to these.

[0190] It should be noted that the technical solutions formed by any of the above-described implementation methods (or embodiments) or any combination of implementation methods (or embodiments) are all within the scope of protection of this application.

[0191] Whenever a range of values ​​is indicated in this application, it refers to any of the listed values ​​(fractions and integers) that fall within the indicated range. The phrases “range between the first indicated value and the second indicated value” and “range from the first indicated value to the second indicated value” are used interchangeably in this application and refer to the values ​​indicated by the first and second indications, as well as all fractional and integer values ​​in between.

[0192] As used herein, when used in conjunction with numerical values ​​and / or ranges, the terms “about” and / or “approximately” generally refer to numerical values ​​and / or ranges that are close to the given value and / or range. In some cases, the terms “about” and “approximately” may mean within ±10% of the value. For example, in some cases, “about 100 [units]” may mean within ±10% of 100 (e.g., 90 to 110). The terms “about” and “approximately” are used interchangeably.

[0193] As used in this application, the singular forms “an,” “a,” and “the” include the plural forms unless the context clearly specifies otherwise. For example, the terms “a compound” or “at least one compound” can include a variety of compounds, including mixtures thereof.

[0194] The term "basically composed of" means that a composition, method, or structure may include additional ingredients, steps, and / or components, provided that these additional ingredients, steps, and / or components do not significantly alter the fundamental and novel properties of the claimed composition, method, or structure.

[0195] The implementation of the methods and / or systems of this application may include performing or fully performing selected tasks manually, automatically, or in a combination thereof. Furthermore, the actual instruments and equipment used in the implementation of the methods and / or systems of this application, using an operating system, may implement several selected tasks via hardware, software, firmware, or a combination thereof.

[0196] For example, the hardware used to perform the selected task according to embodiments of this application can be implemented in the form of a chip or circuit. As software, the task selected according to embodiments of this application can be implemented as multiple software instructions executable by a computer using any suitable operating system. In exemplary embodiments of this application, one or more tasks of exemplary embodiments of the method and / or system according to this application are performed by a data processor, such as a computing platform for executing multiple instructions. Optionally, the data processor includes volatile memory for storing instructions and / or data and / or non-volatile memory for storing instructions and / or data, such as a magnetic hard disk and / or removable media. Optionally, a network connection is also provided. A display and / or user input devices such as a keyboard or mouse are also optionally provided.

[0197] It should be understood that certain features of this application described in the context of a single implementation for clarity can also be provided in combination in a single implementation. Conversely, multiple features of this application described in the context of a single implementation for brevity can also be provided individually or in any suitable sub-combination or, as appropriate, in any other implementation of this application. Certain features described in the context of multiple implementations should not be considered essential features of those implementations unless the implementation does not function without these elements.

[0198] Although this application has been described in conjunction with its specific embodiments, it will be apparent to those skilled in the art that many alternatives, modifications, and variations are possible. Therefore, it is intended to include all such alternatives, modifications, and variations falling within the spirit and broad scope of the appended claims.

Claims

1. An ultrasonic power control method, characterized in that, The method includes: To obtain the ultrasonic output power and transducer temperature of the transducer; When the ultrasonic output power is not within the specified power range and the transducer temperature exceeds the specified temperature range, determine the trend of change of the ultrasonic output power relative to the specified power range; Based on the changing trend, determine the ultrasound signal parameters that match the changing trend; The ultrasonic signal parameters of the ultrasonic drive signal are adjusted to match the changing trend so that the ultrasonic output power of the transducer is within the specified power range. The ultrasonic drive signal is used to drive the transducer to output ultrasonic waves.

2. The method according to claim 1, characterized in that, The step of determining the ultrasound signal parameters matching the changing trend based on the changing trend includes: When the trend of change is decreasing, the frequency of the ultrasonic driving signal is determined as the ultrasonic signal parameter that matches the trend of change; When the trend of change is increasing, the amplitude of the ultrasonic driving signal is determined as an ultrasonic signal parameter that matches the trend of change.

3. The method according to claim 1, characterized in that, The adjustment of the ultrasonic signal parameters of the ultrasonic drive signal to match the changing trend includes: When the ultrasonic signal parameter is frequency, the voltage sampling signal and current sampling signal of the ultrasonic drive signal are acquired; Based on the voltage sampling signal and the current sampling signal, the impedance and phase difference are obtained; The frequency adjustment amount is determined based on the impedance and the phase difference, and the frequency adjustment amount is positively correlated with both the impedance and the phase difference; The frequency of the ultrasonic drive signal is adjusted according to the frequency adjustment amount so that the ultrasonic output power of the transducer is within the specified power range under the drive of the frequency-adjusted ultrasonic drive signal.

4. The method according to claim 3, characterized in that, The step of determining the frequency adjustment amount based on the impedance and the phase difference includes: Obtain the preset upper limit of impedance and upper limit of phase difference; Based on the impedance difference between the impedance and the upper limit of the impedance, and the phase difference between the phase difference and the upper limit of the phase difference, the impedance weight and the phase difference weight are determined. The impedance weight is positively correlated with the impedance, and the phase difference weight is positively correlated with the phase difference. Based on the impedance weight and the phase difference weight, the impedance and the phase difference are weighted and calculated to obtain the frequency adjustment amount.

5. The method according to claim 4, characterized in that, The step of weighting the impedance and the phase difference based on the impedance weight and the phase difference weight to obtain the frequency adjustment amount includes: The impedance is normalized to obtain the normalized impedance. The phase difference is normalized to obtain the normalized phase difference; The normalized impedance and the normalized phase difference are weighted and calculated based on the impedance weight and the phase difference weight to obtain the frequency adjustment amount.

6. The method according to claim 1, characterized in that, The adjustment of the ultrasonic signal parameters of the ultrasonic drive signal to match the changing trend, so that the ultrasonic output power of the transducer is within the specified power range under the drive of the ultrasonic drive signal with adjusted parameters, includes: When the ultrasonic signal parameter is amplitude, the target output power of the transducer is obtained; The power deviation value is determined based on the target output power and the ultrasonic output power; Based on the power deviation value, an amplitude adjustment coefficient is determined, and the amplitude adjustment coefficient is positively correlated with the power deviation value; The amplitude of the ultrasonic drive signal is adjusted according to the amplitude adjustment coefficient so that the ultrasonic output power output by the transducer is within the specified power range under the drive of the amplitude-adjusted ultrasonic drive signal.

7. The method according to claim 6, characterized in that, Determining the amplitude adjustment coefficient based on the power deviation value includes: Obtain the slope of the power change of the ultrasonic output power; Based on the power deviation value and the power change slope, a comprehensive power deviation is determined, wherein the comprehensive power deviation is positively correlated with both the power deviation value and the power change slope; An amplitude adjustment coefficient is determined based on the overall power deviation, and the amplitude adjustment coefficient is positively correlated with the overall power deviation.

8. The method according to any one of claims 1 to 7, characterized in that, The method further includes: Obtain the target transducer temperature of the transducer; The temperature deviation value is determined based on the target transducer temperature and the transducer temperature. Based on the temperature deviation value, an injection adjustment coefficient is determined, and the injection adjustment coefficient is positively correlated with the temperature deviation value; The parameters of the injection pump transmitted to the injection pump are adjusted according to the injection adjustment coefficient so that the temperature of the transducer after the injection pump parameters are adjusted is within the specified temperature range, wherein the injection pump is used to regulate the temperature of the transducer.

9. The method according to claim 8, characterized in that, The determination of the infusion adjustment coefficient based on the temperature deviation value further includes: Obtain the temperature change slope of the transducer; Based on the temperature deviation value and the temperature change slope, a comprehensive temperature deviation is determined; Based on the overall temperature deviation, an injection adjustment coefficient is determined, which is positively correlated with the overall temperature deviation.

10. An ultrasonic power control device, characterized in that, The device includes: The acquisition module is used to acquire the ultrasonic output power and transducer temperature of the transducer; A trend determination module is used to determine the trend of change of the ultrasonic output power relative to the specified power range when the ultrasonic output power is not within the specified power range and the transducer temperature exceeds the specified temperature range. The parameter determination module is used to determine the ultrasound signal parameters that match the changing trend based on the changing trend. An adjustment module is used to adjust the ultrasonic signal parameters of the ultrasonic drive signal to match the changing trend, so that the ultrasonic output power of the transducer is within the specified power range, and the ultrasonic drive signal is used to drive the transducer to output ultrasonic waves.

11. An ultrasonic ablation device, characterized in that, The ultrasonic ablation device includes a main control component and an ultrasonic drive component, the ultrasonic drive component being connected to the main control component; the ultrasonic ablation device is also connected to a transducer. The ultrasonic driving component is used to generate an ultrasonic driving signal under the control of the main control component, and to feed back the ultrasonic output power of the transducer driven by the ultrasonic driving signal to the main control component. The main control component is used to acquire the ultrasonic output power and transducer temperature of the transducer; when the ultrasonic output power is not within a specified power range and the transducer temperature exceeds a specified temperature range, it determines the trend of change of the ultrasonic output power relative to the specified power range; based on the trend of change, it determines ultrasonic signal parameters that match the trend of change; and adjusts the ultrasonic signal parameters of the ultrasonic drive signal that match the trend of change. The ultrasonic drive component is also used to receive adjusted ultrasonic signal parameters and update the ultrasonic drive signal based on the adjusted ultrasonic signal parameters so that the ultrasonic output power of the transducer is within the specified power range.

12. The device according to claim 11, characterized in that, The ultrasonic driving component includes a signal control unit, an ultrasonic signal generating unit, and a sampling unit; the output terminal of the signal control unit is connected to the input terminal of the ultrasonic signal generating unit, the control terminal of the signal control unit is connected to the output terminal of the sampling unit, and the sampling unit is located between the output terminal of the ultrasonic signal generating unit and the input terminal of the transducer; The signal control unit is used to control the ultrasonic signal generating unit under the control of the main control component; The ultrasonic signal generating unit is used to generate ultrasonic drive signals under the control of the signal control unit; The sampling unit is used to sample the ultrasonic output power of the transducer under the drive of the ultrasonic driving signal, and to feed back the ultrasonic output power to the main control component through the signal control unit.

13. The device according to claim 12, characterized in that, The ultrasonic driving component also includes a power amplifier power supply unit; The power amplifier power supply unit is used to adjust the amplitude of the ultrasonic drive signal under the control of the signal control unit.

14. The device according to claim 12, characterized in that, The sampling unit includes a voltage sampling circuit, a current sampling circuit, and a power calculation circuit; the input terminals of the voltage sampling circuit and the current sampling circuit are respectively connected to the output terminal of the ultrasonic signal generating unit, and the output terminals of the voltage sampling circuit and the current sampling circuit are respectively connected to the input terminal of the power calculation circuit; the output terminal of the power calculation circuit is connected to the signal control unit. A voltage sampling circuit is used to sample the ultrasonic drive signal to obtain a voltage sampling signal; A current sampling circuit is used to sample the ultrasonic drive signal to obtain a current sampling signal; A power calculation circuit is used to obtain the power of the sampled signal based on the voltage sampling signal and the current sampling signal; The power calculation circuit is also used to obtain the acoustic-electric conversion efficiency of the transducer, and to convert the power of the sampled signal using the acoustic-electric conversion efficiency to obtain the ultrasonic output power of the transducer.

15. An ultrasonic ablation system, characterized in that, The ultrasonic ablation system includes ultrasonic ablation equipment and a transducer; The ultrasonic ablation device is used to acquire the ultrasonic output power and transducer temperature of the transducer; when the ultrasonic output power is not within a specified power range and the transducer temperature exceeds a specified temperature range, it determines the trend of change of the ultrasonic output power relative to the specified power range; based on the trend of change, it determines ultrasonic signal parameters that match the trend of change; and it adjusts the ultrasonic signal parameters of the output ultrasonic drive signal so that the ultrasonic output power of the transducer is within the specified power range, wherein the ultrasonic drive signal is used to drive the transducer to output ultrasonic waves. The transducer is used to generate ultrasonic waves under the drive of the ultrasonic driving signal.

16. The system according to claim 15, characterized in that, The ultrasonic ablation system also includes an ultrasonic ablation catheter, the working end of which is provided with a balloon, and the transducer is located inside the balloon.

17. The system according to claim 16, characterized in that, The ultrasonic ablation system also includes an infusion pump and an infusion pump tubing; The infusion pump is communicatively connected to the ultrasonic ablation device and is connected to the ultrasonic ablation conduit via the infusion pump tube; The infusion pump, under the control of the ultrasonic ablation device, is used to flow coolant through the balloon via the infusion pump tube to regulate the temperature of the transducer.

18. The system according to claim 15, characterized in that, The ultrasonic ablation system also includes a catheter drive handle; The conduit drive handle is used to acquire an electromotive force signal, which is used to characterize the temperature of the transducer. The electromotive force signal is obtained by a temperature sensor that collects the temperature of the transducer. The temperature sensor is located on the transducer. The catheter drive handle is also used to convert the electromotive force signal into the transducer temperature and to output the transducer temperature to the ultrasonic ablation device.

19. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 9.

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