Ultrasonic ablation system and control method thereof

Abstract

The invention discloses an ultrasonic ablation system and a control method thereof, and relates to the technical field of medical instruments. The ultrasonic ablation system comprises an ultrasonic control device, a driving device, an ablation catheter and an ultrasonic transducer; a driving control end of the driving device is connected with the ultrasonic control device, a driving output end of the driving device is connected with a first end of the ablation catheter, and an ultrasonic transducer is arranged at a second end of the ablation catheter; the ultrasonic control device is used for determining an angle interval of a to-be-ablated target relative to the rotation center of the ultrasonic transducer, determining a control signal according to the angle interval, and outputting the control signal to the driving device; and the driving device is used for receiving the control signal, driving the ultrasonic transducer to rotate at a set rate based on the control signal, and controlling the output power of the ultrasonic transducer according to the control signal in the rotating process of the ultrasonic transducer. By the adoption of the technical scheme, the target to be ablated can be effectively removed, and meanwhile damage to other body tissue except the target to be ablated is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to an ultrasonic ablation system and a control method thereof. Background Art

[0002] The ablation device is a device widely used in the medical field. It is mainly used to destroy or remove diseased tissue through radio frequency, ultrasound, freezing, chemical damage, etc., and has broad application prospects in the medical field.

[0003] However, in existing radiofrequency ablation and cryoablation, by transferring heat energy and low-temperature energy, it is easy to damage the inner wall of the blood vessel while ablating the nerves outside the blood vessel wall; and existing ultrasonic ablation and chemical ablation have the risk of damaging adjacent body tissues.

[0004] Therefore, how to reduce the damage to other body tissues other than the ablation target while ablating the diseased tissue is a technical problem that needs to be solved urgently. Summary of the invention

[0005] The present application provides an ultrasonic ablation system and a control method thereof to reduce damage to other body tissues other than the ablation target.

[0006] According to one aspect of the present application, there is provided an ultrasonic ablation system, comprising: an ultrasonic control device, a driving device, an ablation catheter and an ultrasonic transducer;

[0007] The driving control end of the driving device is connected to the ultrasonic control device, the driving output end of the driving device is connected to the first end of the ablation catheter, and the second end of the ablation catheter is provided with the ultrasonic transducer;

[0008] The ultrasonic control device is used to determine the angle interval of the target to be ablated relative to the rotation center of the ultrasonic transducer, and determine a control signal according to the angle interval, and output the control signal to the driving device;

[0009] The driving device is used to receive the control signal, and drive the ultrasonic transducer to rotate at a set speed based on the control signal, and control the output power of the ultrasonic transducer according to the control signal during the rotation of the ultrasonic transducer.

[0010] Optionally, the control signal includes a rate control signal and a power control signal; in terms of determining the control signal according to the angle interval, the ultrasonic control device is specifically used for:

[0011] If the angle interval is 360 degrees, determining that the rate control signal is a first rate control signal, and determining that the power control signal is a first power control signal;

[0012] The first rate control signal is used to enable the driving device to control the ultrasonic transducer to rotate at a first rate based on the first rate control signal, and the first power control signal is used to enable the driving device to control the output power of the ultrasonic transducer to a first power based on the first power control signal.

[0013] Optionally, the control signal includes a power control signal; in terms of determining the control signal according to the angle interval, the ultrasonic control device is specifically used for:

[0014] If the angle interval is less than 360 degrees, when the ultrasonic transducer rotates within the angle interval, the power control signal is determined to be a first power control signal, and when the ultrasonic transducer rotates outside the angle interval, the power control signal is determined to be a second power control signal;

[0015] Among them, the first power control signal is used to enable the driving device to control the output power of the ultrasonic transducer to be a first power based on the first power control signal, and the second power control signal is used to enable the driving device to control the output power of the ultrasonic transducer to be a second power based on the second power control signal, and the first power and the second power are not equal.

[0016] Optionally, the control signal further includes a rate control signal; in terms of determining the control signal according to the angle interval, the ultrasonic control device is further used to:

[0017] If the angle interval is less than 360 degrees, when the ultrasonic transducer rotates within the angle interval, the rate control signal is determined to be a first rate control signal, and when the ultrasonic transducer rotates outside the angle interval, the rate control signal is determined to be a second rate control signal;

[0018] The first rate control signal is used to enable the driving device to control the ultrasonic transducer to rotate at a first rate based on the first rate control signal, and the second rate control signal is used to enable the driving device to control the ultrasonic transducer to rotate at a second rate based on the second rate control signal, and the first rate and the second rate are not equal.

[0019] Optionally, the ultrasonic ablation system further comprises a catheter monitoring device, and the catheter monitoring device comprises a synchronous detection module;

[0020] The synchronization detection module is used to detect the current rotation position of the ultrasonic transducer and output a rotation synchronization signal;

[0021] The ultrasonic control device is also used to receive the rotation synchronization signal and determine the control signal according to the rotation synchronization signal;

[0022] The driving device is used to receive the rotation synchronization signal and control the output power of the ultrasonic transducer according to the rotation synchronization signal during the rotation of the ultrasonic transducer.

[0023] Optionally, the catheter monitoring device further includes a processing module, a temperature detection module, a state identification module and an access detection module;

[0024] The connection detection module is used to obtain the connection status of the ablation catheter at the driving output end of the driving device, and output a connection detection signal to the processing module;

[0025] The state identification module is used to identify the parameter information of the ablation catheter when the connection state is connected, determine the use state of the ablation catheter according to the parameter information, and output a use detection signal to the processing module;

[0026] The temperature detection module is used to detect the current temperature of the ultrasonic transducer when the use state is not in use, and output a temperature detection signal to the processing module;

[0027] The processing module is used to receive the connection detection signal, the use detection signal and the temperature detection signal, and output a first detection control signal, a second detection control signal and a third detection control signal to the temperature detection module, the state identification module and the access detection module respectively based on the connection detection signal, the use detection signal and the temperature detection signal;

[0028] The processing module is further configured to feed back at least one of the connection detection signal, the use detection signal and the temperature detection signal to the ultrasonic control device.

[0029] Optionally, it also includes: a temperature regulating device;

[0030] The ultrasonic control device is also used to receive the temperature detection signal, determine a temperature control signal according to the temperature detection signal, and output the temperature control signal to the temperature adjustment device;

[0031] The temperature regulating device is used to receive the temperature control signal and control the temperature of the ultrasonic transducer according to the temperature control signal.

[0032] Optionally, it also includes: an ultrasonic ablation host and a handle;

[0033] The ablation host and the handle are electrically connected via a cable, and the ablation host and the handle are also communicatively connected via an optical cable;

[0034] The ultrasonic control device is arranged in the ultrasonic ablation main unit, and at least part of the structure of the driving device is arranged in the handle.

[0035] Optionally, the ultrasonic ablation host further includes a power module;

[0036] The power supply module includes a switch key, a switch unit, a first isolated power supply and a second isolated power supply;

[0037] The control end of the switch unit is connected to the switch key, the first end of the switch unit is electrically connected to the power supply grid, and the second end of the switch unit is electrically connected to the first isolated power supply and the second isolated power supply respectively; the first isolated power supply is also electrically connected to the ultrasonic control device; and the second isolated power supply is also electrically connected to the drive device.

[0038] Optionally, the ultrasonic ablation host further includes a storage module; the power supply module further includes a power-off delay unit;

[0039] The switch indicating end of the switch unit is electrically connected to the storage module; the storage module is electrically connected to the first isolation power supply through the power-off delay unit.

[0040] Optionally, the ultrasonic ablation system further comprises a foot switch, and the foot switch is communicatively connected with the ultrasonic control device;

[0041] The foot switch is used to output a foot signal to the ultrasonic control device through a contact state;

[0042] The control signal includes a power control signal; the ultrasonic control device is further used to receive the foot pedal signal and determine the power control signal according to the foot pedal signal;

[0043] The power control signal is used to enable the driving device to control the output power of the ultrasonic transducer based on the power control signal.

[0044] According to another aspect of the present application, a control method for an ultrasonic ablation system is provided, the control method comprising:

[0045] Acquire the position of the target to be ablated and the position of the rotation center of the ultrasonic transducer;

[0046] Determining an angular interval of the target to be ablated relative to the rotation center of the ultrasonic transducer based on the position of the target to be ablated and the position of the rotation center;

[0047] Based on the angle interval, determining a control signal;

[0048] The control signal is sent, and the control signal is used to enable the driving device to control the rotation speed and output power of the ultrasonic transducer based on the control signal.

[0049] Optionally, the control signal includes a rate control signal and a power control signal;

[0050] Based on the angle interval, determining a control signal includes:

[0051] If the angle interval is 360 degrees, determining that the rate control signal is a first rate control signal, and determining that the power control signal is a first power control signal;

[0052] The first rate control signal is used to enable the driving device to control the ultrasonic transducer to rotate at a first rate based on the first rate control signal, and the first power control signal is used to enable the driving device to control the output power of the ultrasonic transducer to a first power based on the first power control signal.

[0053] Optionally, the control signal includes a power control signal;

[0054] Based on the angle interval, determining a control signal includes:

[0055] If the angle interval is less than 360 degrees, determining whether the ultrasonic transducer is rotated to within the angle interval;

[0056] If the ultrasonic transducer rotates to the angle interval, determining that the power control signal is a first power control signal;

[0057] If the ultrasonic transducer does not rotate to the angle interval, determining that the power control signal is a second power control signal;

[0058] Among them, the first power control signal is used to enable the driving device to control the output power of the ultrasonic transducer to be a first power based on the first power control signal, and the second power control signal is used to enable the driving device to control the output power of the ultrasonic transducer to be a second power based on the second power control signal, and the first power and the second power are not equal.

[0059] Optionally, the control signal also includes a rate control signal;

[0060] Based on the angle interval, determining a control signal further includes:

[0061] If the ultrasonic transducer rotates to the angle interval, determining that the rate control signal is a first rate control signal;

[0062] If the ultrasonic transducer does not rotate to the angle interval, determining that the rate control signal is a second rate control signal;

[0063] The first rate control signal is used to enable the driving device to control the ultrasonic transducer to rotate at a first rate based on the first rate control signal, and the second rate control signal is used to enable the driving device to control the ultrasonic transducer to rotate at a second rate based on the second rate control signal, and the first rate and the second rate are not equal.

[0064] The technical solution of the present application can control and drive the ultrasonic transducer connected to the ablation catheter through an ultrasonic control device and a driving device, and flexibly control the output power of the ultrasonic transducer when it is rotated to different angles according to the angular range of the target to be ablated relative to the rotation center of the ultrasonic transducer; the ultrasonic ablation system can effectively remove the target ablation area while minimizing damage to surrounding healthy tissue through highly intelligent design and precise control mechanism, and can adjust the rotation rate and output power of the ultrasonic transducer in real time according to the angular range to ensure safety and accuracy during the ablation process, thereby significantly improving the ablation effect and reducing the risk of complications.

[0065] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present application, nor is it intended to limit the scope of the present application. Other features of the present application will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0067] Figure 1 is a structural schematic diagram of an ultrasonic ablation system provided in an embodiment of the present application;

[0068] Figure 2 is a rotation schematic diagram of an ultrasonic transducer provided in an embodiment of the present application;

[0069] Figure 3 is a rotation schematic diagram of another ultrasonic transducer provided in an embodiment of the present application;

[0070] Figure 4 is a structural schematic diagram of another ultrasonic ablation system provided in an embodiment of the present application;

[0071] Figure 5is a schematic structural diagram of another ultrasonic ablation system provided in an embodiment of the present application;

[0072] Figure 6 is a structural schematic diagram of another ultrasonic ablation system provided in an embodiment of the present application;

[0073] Figure 7 It is a flow chart of a control method of an ultrasonic ablation system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0074] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0075] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0076] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application. The technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application.

[0077] Figure 1 is a schematic diagram of the structure of an ultrasonic ablation system provided in an embodiment of the present application, with reference to Figure 1The ultrasonic ablation system includes an ultrasonic control device 010, a driving device 020, an ablation catheter 030 and an ultrasonic transducer 041. The driving control end 021 of the driving device 020 is connected to the ultrasonic control device 010, the driving output end 022 of the driving device 020 is connected to the first end of the ablation catheter 030, and the second end of the ablation catheter 030 is provided with an ultrasonic transducer 041. In an optional embodiment, the ablation catheter 030 and the driving device 020 are pluggable. In another optional embodiment, the catheter tip 040 can be provided at the topmost position of the second end of the ablation catheter 030, and the catheter tip 040 can be made of silicone. When the second end of the ablation catheter 030 is inserted into the human body, the catheter tip 040 can play a guiding role and reduce the discomfort of foreign matter entering the human body. In other optional embodiments, the ultrasonic transducer 041 can also be directly connected to the second end of the ablation catheter 030 (not shown in the figure), and the specific setting method of the ultrasonic transducer 041 is not limited in the embodiment of the present application.

[0078] The ultrasonic control device 010 is used to determine the angular interval of the target to be ablated relative to the rotation center of the ultrasonic transducer 041, and determine the control signal according to the angular interval, and output the control signal to the driving device 020. The driving device 020 is used to receive the control signal output by the ultrasonic control device 010, and drive the ultrasonic transducer 041 to rotate at a set rate based on the control signal. In an optional embodiment, the driving device 020 can drive the ultrasonic transducer 041 to rotate through the transmission mechanism (not shown in the figure) of the ablation catheter 030, and control the output power of the ultrasonic transducer 041 according to the control signal during the rotation of the ultrasonic transducer 041.

[0079] The ultrasonic control device 010 includes but is not limited to hardware control devices such as printed circuit boards and integrated circuit chips for performing various functions. The executable functions include but are not limited to logical operations, signal processing and other functions. The control signals output by the ultrasonic control device 010 to the driving device 020 include but are not limited to communication signals such as electrical signals, optical signals, and electromagnetic waves. In an optional embodiment, the control signals output by the ultrasonic control device 010 to the driving device 020 include rate control signals and power control signals to control the rotation rate and output power of the ultrasonic transducer through the driving device 020. The driving device 020 includes but is not limited to components such as a power converter, a motor driver, a motor, and a transmission mechanism. The power converter can convert direct current into alternating current, the motor driver can control the speed, direction, acceleration, etc. of the motor, the motor can convert electrical energy into mechanical energy, the transmission mechanism can convert the rotation of the motor into the rotation of the connector between the driving device 020 and the ablation catheter 030, and the connector can convert the rotation of the transmission mechanism in the driving device 020 into the rotation of the transmission mechanism in the ablation catheter 030, and finally drive the rotation of the ultrasonic transducer 041. In an optional implementation, the driving device 020 may further include a power module (not shown in the figure), which can output an ultrasonic driving waveform to control the output power of the ultrasonic transducer 041 .

[0080] The ultrasonic transducer 041 can convert electrical energy into ultrasonic waves. The ultrasonic waves generated by the ultrasonic transducer 041 can be precisely focused on the target lesion, and the non-invasive ablation of the lesion can be achieved by converting the mechanical effect into thermal effect and cavitation effect to cause coagulative necrosis of the tissue near the target.

[0081] Exemplarily, the second end of the ablation catheter 030 may be inserted into a blood vessel near the target to be ablated, and the position of the rotation center of the ultrasonic transducer and the position of the target to be ablated may be observed by using digital subtraction angiography (DSA) technology and an angiography method assisted by an electronic computer, and a zero point (0 degrees of the rotation angle of the ultrasonic transducer 041, also referred to as a reference point or a starting point) may be determined, so that the ultrasonic control device 010 may determine the angle interval of the target to be ablated relative to the rotation center of the ultrasonic transducer 041. The angle interval is greater than or equal to 0 degrees and less than or equal to 360 degrees.

[0082] The ultrasonic control device 010 and the driving device 020 can be connected in communication, and the ultrasonic control device 010 can output a control signal to the driving device 020 to control the driving device 020. The driving device 020 can receive the control signal output by the ultrasonic control device 010, and based on the control signal, control the rotation rate and output power of the ultrasonic transducer 041. In an optional embodiment, the ultrasonic control device 010 can output a rate control signal to the driving device 020, so that the driving device 020 controls the ultrasonic transducer 041 to rotate at a fixed rate; when the ultrasonic transducer 041 rotates to within the angle range, the ultrasonic control device 010 can output a power control signal to the driving device 020, so that the driving device 020 controls the output power of the ultrasonic transducer 041 to be greater than 0 watts (W); when the ultrasonic transducer 041 rotates to outside the angle range, the ultrasonic control device 010 can output a power control signal to the driving device 020, so that the driving device 020 controls the output power of the ultrasonic transducer 041 to be 0 watts (W). Among them, the rotation position of the ultrasonic transducer 041 can be determined by the line connecting the rotation center of the ultrasonic transducer 041 and the target point, or, it can also be determined by the line connecting the rotation center of the ultrasonic transducer 041 and the center of the ultrasonic transducer 041, but is not limited to this. The present application does not make any specific limitation on the determination of the rotation position of the ultrasonic transducer 041.

[0083] On the basis of the above embodiment, the driving device 020 can also control the output power of the ultrasonic transducer 041 to be 0w before the ultrasonic transducer 041 reaches the set speed, and control the output power of the ultrasonic transducer 041 to be greater than 0w after the ultrasonic transducer 041 reaches the set speed and when the ultrasonic transducer 041 rotates to within the angle range.

[0084] In other optional embodiments, the ultrasonic control device 010 may also use the ultrasonic transducer 041 to scan the target to be ablated, obtain the position of the target to be ablated, and then determine the angular range of the target to be ablated relative to the rotation center of the ultrasonic transducer 041. The embodiment of the present application does not limit how to determine the angular range of the target to be ablated relative to the rotation center of the ultrasonic transducer 041.

[0085] It should be noted that the angle interval is determined by the ultrasonic control device, and may be determined by angiography and computer-assisted determination of the angle interval where the lesion is located, or may be determined by scanning with the ultrasonic transducer 041, or may be determined by other methods, and the ultrasonic control device may be able to determine the angle interval where the lesion is located by user input. During the working time period of the ultrasonic ablation system, after the position of the ablation catheter and the zero point of the ultrasonic transducer are determined, the angle interval generally does not change. In an optional embodiment, after the ablation catheter is inserted into the blood vessel, one or more rotational ablations are performed, and the size of the lesion may change after the rotational ablation. To avoid excessive ablation, the ultrasonic control device may re-determine the angle interval, and the angle interval may change at this time. The ultrasonic ablation system may perform ultrasonic ablation according to the new angle interval.

[0086] The ultrasonic ablation system provided in the embodiment of the present application can control and drive the ultrasonic transducer connected to the ablation catheter through an ultrasonic control device and a driving device, and flexibly control the output power of the ultrasonic transducer when it is rotated to different angles according to the angular range of the target to be ablated relative to the rotation center of the ultrasonic transducer; the ultrasonic ablation system can effectively remove the target ablation area while minimizing damage to surrounding healthy tissue through highly intelligent design and precise control mechanism, and can adjust the rotation rate and output power of the ultrasonic transducer in real time according to the angular range to ensure safety and accuracy during the ablation process, thereby significantly improving the ablation effect and reducing the risk of complications.

[0087] Optional, continue to refer to Figure 1 A balloon 050 is also arranged outside the tube wall of the second end of the ablation catheter 030. The ultrasonic ablation system also includes an irrigation pump 060. At least one liquid pipeline (not shown in the figure) can also be arranged in the cavity of the ablation catheter 030. One end of the liquid pipeline can be connected to the irrigation pump 060, and the other end of the liquid pipeline can be connected to the balloon 050. The irrigation pump 060 is also connected to the ultrasonic control device 010. The ultrasonic control device 010 can output a liquid control signal to the irrigation pump 060. The irrigation pump 060 can receive the liquid control signal and control the content of the liquid in the balloon 050 based on the liquid control signal, thereby controlling the volume of the balloon 050 to move or fix the catheter tip 040 and the ultrasonic transducer 041.

[0088] Optionally, the ultrasonic ablation system further includes a foot switch 090, which is in communication with the ultrasonic control device 010; the foot switch 090 is used to output a foot signal to the ultrasonic control device 010 through a contact state; the ultrasonic control device 010 is also used to receive the foot signal and determine a power control signal according to the foot control signal. The power control signal is used to enable the driving device 020 to control the output power of the ultrasonic transducer 041 based on the power control signal.

[0089] Exemplarily, when both hands of the operator are occupied, a foot switch 090 can be used to output a foot signal to the ultrasonic control device 010, so that the ultrasonic control device 010 can determine a power control signal based on the foot signal, and output the power control signal to the drive device 020, thereby enabling the drive device 020 to control the output power of the ultrasonic transducer 041 based on the power control signal, which is conducive to flexible control of the output power of the ultrasonic transducer 041.

[0090] In the previous embodiments, the basic structure and basic working principle of the ultrasonic ablation system are introduced. Next, the specific working principles of the ultrasonic control device 010 and the driving device 020 in the ultrasonic ablation system are described in detail. Figure 2 is a rotation diagram of an ultrasonic transducer provided in an embodiment of the present application, with reference to Figure 2 The control signal includes a rate control signal and a power control signal; in terms of determining the control signal according to the angle interval AR, the ultrasonic control device 010 is specifically used for: if the angle interval AR is 360 degrees, then determining the rate control signal as the first rate control signal, and determining the power control signal as the first power control signal.

[0091] Among them, the first rate control signal is used to enable the driving device 020 to control the ultrasonic transducer 041 to rotate at a first rate based on the first rate control signal, and the first power control signal is used to enable the driving device 020 to control the output power of the ultrasonic transducer 041 to be a first power based on the first power control signal. In an optional embodiment, the first power is greater than 0w.

[0092] For example, continue to refer to Figure 2Through the focusing effect of ultrasound, the energy of ultrasound can be focused on a specific area to form a linear damage area LDA from the target point to the rotation center P of the ultrasonic transducer 041. Taking the perspective from the second end to the first end of the ablation catheter 030, the ultrasonic transducer 041 rotates in a clockwise direction as an example. If the angle interval AR is 360 degrees, the angle of the zero point RZ is the starting angle, and the angle of one rotation is within the angle interval AR. When the ultrasonic transducer 041 rotates to different angles, the driving device 020 can control the ultrasonic transducer 041 to output the first power based on the first power control signal, that is, output ultrasonic energy of the same intensity, so that the linear damage area LDA forms a circular surface damage area FDA, ensuring that the targets to be ablated around the outer periphery of the vascular wall can be evenly ablated.

[0093] Optional, Figure 3 is another rotation schematic diagram of an ultrasonic transducer provided in an embodiment of the present application, with reference to Figure 3 , the control signal includes a power control signal; in terms of determining the control signal according to the angle interval AR, the ultrasonic control device 010 is specifically used for: if the angle interval AR is less than 360 degrees, then when the ultrasonic transducer 041 rotates to within the angle interval AR, determining that the power control signal is a first power control signal, and when the ultrasonic transducer 041 rotates to outside the angle interval AR, determining that the power control signal is a second power control signal.

[0094] The first power control signal is used to make the driving device 020 control the output power of the ultrasonic transducer 041 to be the first power based on the first power control signal, and the second power control signal is used to make the driving device 020 control the output power of the ultrasonic transducer 041 to be the second power based on the second power control signal, and the first power and the second power are not equal. In one embodiment, the first power is greater than the second power, and in another embodiment, the second power is 0w.

[0095] Exemplarily, taking the perspective from the second end to the first end of the ablation catheter 030, the ultrasonic transducer 041 rotates in a clockwise direction as an example. If the angle interval AR is 40 degrees, specifically 180-220 degrees, the angle of the ultrasonic transducer 041 rotating from 180 degrees to 220 degrees is within the angle interval AR. At this stage, the driving device 020 can control the output power of the ultrasonic transducer 041 to be 40w (first power) based on the first power control signal; the angle of the ultrasonic transducer 041 rotating from 0 degrees to 180 degrees and from 220 degrees to 360 degrees are both outside the angle interval AR. At this stage, the driving device 020 can control the output power of the ultrasonic transducer 041 to be 0w (second power) based on the second power control signal. In this way, the nerves located within the angle interval AR (targets to be ablated) can be removed, and the nerves located outside the angle interval AR will not be removed. At this time, the linear damage area LDA can form a fan-shaped surface damage area FDA, so that the ultrasonic ablation system can achieve selective ablation outside the blood vessel wall, thereby achieving ablation of the target to be ablated while avoiding damage to other body tissues around the target to be ablated.

[0096] In an optional embodiment, continue to refer to Figure 3 , the control signal includes a power control signal; in terms of determining the control signal according to the angle interval AR, the ultrasonic control device 010 is specifically used for: if the angle interval AR includes multiple sub-intervals AR', the control signal includes multiple sub-power control signals, and the multiple sub-power control signals correspond to the multiple sub-intervals AR' one-to-one, and when the ultrasonic transducer 041 rotates to the corresponding sub-interval AR', the power control signal is determined to be the corresponding sub-power control signal. Each sub-power control signal is used to make the ultrasonic transducer 041 rotate to the corresponding sub-interval AR' and output the transmission power corresponding to the corresponding sub-power control signal.

[0097] Exemplarily, in different sub-intervals AR', the maximum thickness of the target to be ablated is different along the direction from the target point of the ultrasonic transducer 041 to the rotation center P. When the ultrasonic transducer 041 rotates to the sub-interval AR' where the maximum thickness of the target to be ablated is thicker, the driving device 020 can control the ultrasonic transducer 041 to output a larger transmission power based on the sub-power control signal, that is, to output a stronger ultrasonic energy, which is beneficial to ablate all the targets to be ablated in the sub-interval AR'. When the ultrasonic transducer 041 rotates to the sub-interval AR' where the maximum thickness of the target to be ablated is smaller, the driving device 020 can control the ultrasonic transducer 041 to output a smaller transmission power based on the sub-power control signal, that is, to output a weaker ultrasonic energy, which is beneficial to ablate all the targets to be ablated in the sub-interval AR' while reducing damage to other body tissues around the target to be ablated, and avoiding excessive damage to other body tissues around the target to be ablated.

[0098] It should be noted that the figure only exemplarily shows an angle range relative to the rotation center of the ultrasonic transducer. In other optional embodiments, the rotation center relative to the ultrasonic transducer may have multiple angle ranges, which is not limited in the present application.

[0099] It should also be noted that one or more angle intervals can be divided into different sub-intervals. When the ultrasonic transducer rotates to different sub-intervals, the power output by the ultrasonic transducer can be the same or different. This application does not limit this. The output power of the ultrasonic transducer when it rotates to different sub-intervals can be set according to actual needs to achieve high-precision ablation within the angle interval. However, the power output when the ultrasonic transducer rotates to the angle interval is different from the power output when the ultrasonic transducer rotates to outside the angle interval. Generally, the power output when the ultrasonic transducer rotates to the angle interval is greater than 0w, and the power output when the ultrasonic transducer rotates to outside the angle interval is 0w, so as to achieve selective ablation of nerves within the angle interval and not ablate nerves outside the angle interval.

[0100] On the basis of the above embodiment, the control signal also includes a rate control signal; in terms of determining the control signal according to the angle interval AR, the ultrasonic control device 010 is specifically used for: if the angle interval is less than 360 degrees, then when the ultrasonic transducer 041 rotates to within the angle interval AR, determining that the rate control signal is a first rate control signal; and when the ultrasonic transducer 041 rotates to outside the angle interval AR, determining that the rate control signal is a second rate control signal.

[0101] The first rate control signal is used to enable the driving device 020 to control the ultrasonic transducer 041 to rotate at a first rate based on the first rate control signal, and the second rate control signal is used to enable the driving device 020 to control the ultrasonic transducer 041 to rotate at a second rate based on the second rate control signal, and the first rate and the second rate are not equal. In an optional embodiment, both the first rate and the second rate are greater than 0 revolutions per second (rps / s), and the first rate is less than the second rate.

[0102] For example, continue to refer to Figure 3, taking the perspective from the second end to the first end of the ablation catheter 030, the ultrasonic transducer 041 rotates in the clockwise direction as an example, if the angle interval AR is 40 degrees, specifically 180-220 degrees, the angle of the ultrasonic transducer 041 rotating from 180 degrees to 220 degrees is within the angle interval AR, and at this stage the driving device 020 can control the rotation rate of the ultrasonic transducer 041 to be 2rps / s (first rate) based on the first rate control signal; the angle of the ultrasonic transducer 041 rotating from 0 degrees to 180 degrees, and the angle of the ultrasonic transducer rotating from 220 degrees to 360 degrees are both outside the angle interval AR, and at this stage the driving device 020 can control the rotation rate of the ultrasonic transducer 041 to be 4rps / s (second rate) based on the second rate control signal. In this way, while achieving selective ablation, the time taken for the ultrasonic transducer 041 to rotate one circle can be reduced, thereby improving work efficiency.

[0103] In an optional embodiment, the ultrasonic control device 010 is further specifically used for: if the angle interval AR is less than 360 degrees, determining a deceleration interval (not shown in the figure) before the ultrasonic transducer 041 rotates to the angle interval AR, and an acceleration interval (not shown in the figure) after the ultrasonic transducer 041 rotates to the angle interval AR, and when the ultrasonic transducer 041 rotates into the deceleration interval, determining that the rate control signal is a deceleration control signal, and when the ultrasonic transducer 041 rotates into the acceleration interval, determining that the rate control signal is an acceleration control signal.

[0104] The deceleration control signal is used to enable the driving device 020 to control the ultrasonic transducer 041 to rotate at a first acceleration based on the deceleration control signal, and the acceleration control signal is used to enable the driving device 020 to control the ultrasonic transducer 041 to rotate at a second acceleration based on the acceleration control signal.

[0105] Specifically, the rotation rate of the ultrasonic transducer 041 when it rotates to the deceleration interval is greater than or equal to the first rate and less than or equal to the second rate; the rotation rate of the ultrasonic transducer 041 when it rotates to the acceleration interval is also greater than or equal to the first rate and less than or equal to the second rate.

[0106] Exemplarily, continuing to take the perspective from the second end to the first end of the ablation catheter 030, the ultrasonic transducer 041 rotates in the clockwise direction, the angle interval AR is 180-220 degrees, the deceleration interval is 175-180 degrees, and the acceleration interval is 220-225 degrees as an example, when the ultrasonic transducer 041 rotates from 0 degrees to 175 degrees, the driving device 020 can control the rotation rate of the ultrasonic transducer 041 to be 4rps / s (the second rate) based on the second rate control signal; when the ultrasonic transducer 041 rotates from 175 degrees to 180 degrees, the driving device 020 can control the ultrasonic transducer 041 to rotate at a first acceleration deceleration based on the deceleration control signal until the rotation rate of the ultrasonic transducer 041 reaches 2rps / s. s / s (first rate); when the ultrasonic transducer 041 rotates from 180 degrees to 220 degrees, the driving device 020 can control the rotation rate of the ultrasonic transducer 041 to 2rps / s (first rate) based on the first rate control signal; when the ultrasonic transducer 041 rotates from 220 degrees to 225 degrees, the driving device 020 can control the ultrasonic transducer 041 to rotate at the second acceleration based on the acceleration control signal until the rotation rate of the ultrasonic transducer 041 reaches 4rps / s (second rate); when the ultrasonic transducer 041 rotates from 225 degrees to 360 degrees, the driving device 020 can control the rotation rate of the ultrasonic transducer 041 to 4rps / s (second rate) based on the second rate control signal. In this way, it can be ensured that when the ultrasonic transducer 041 rotates to the angle interval AR, the rotation rate can reach the first rate, so as to achieve uniform ablation and improve the ablation effect.

[0107] In summary, the ultrasonic control device 010 and the driving device 020 can effectively remove the target to be ablated while reducing damage to other body tissues other than the target to be ablated. In order to further optimize the ablation process of the ultrasonic control device 010 and the driving device 020, the embodiment of the present application also provides an ultrasonic ablation system including a catheter monitoring device.

[0108] Figure 4 is a schematic diagram of the structure of another ultrasonic ablation system provided in an embodiment of the present application, with reference to Figure 3 and Figure 4 The ultrasonic ablation system further includes a catheter monitoring device 070, which includes a synchronization detection module 071; the synchronization detection module 071 is used to detect the current rotation position of the ultrasonic transducer 041 and output a rotation synchronization signal. The ultrasonic control device 010 is also used to receive the rotation synchronization signal and determine the control signal according to the rotation synchronization signal. The driving device 020 is also used to receive the rotation synchronization signal and control the output power of the ultrasonic transducer 041 according to the rotation synchronization signal during the rotation of the ultrasonic transducer 041.

[0109] The current rotation position may be any position during the rotation of the ultrasonic transducer 041, any angle between 0 and 360 degrees, a position within an angle interval including the lesion, or a position outside an angle interval not including the lesion. The synchronous detection module 071 includes but is not limited to sensors such as encoders, rotary transformers, Hall effect sensors, optical sensors, and gyroscopes.

[0110] Exemplarily, the synchronization detection module 071 and the ultrasonic control device 010 can be digitally connected, and the synchronization detection module 071 can identify and output the rotation phase information of the motor in the driving device 020, so that the ultrasonic control device 010 can obtain the current rotation position of the ultrasonic transducer 041 through the synchronization detection module 071 (the motor and the ultrasonic transducer 041 rotate synchronously), and the ultrasonic control device 010 can determine whether the current rotation position of the ultrasonic transducer 041 is rotated to the angle interval AR based on the current rotation position of the ultrasonic transducer 041, and determine the power control signal accordingly, and output the power control signal to the driving device 020, so that the driving device 020 can control the output power of the ultrasonic transducer 041 based on the power control signal. For example, when the ultrasonic transducer 041 rotates to within the angle interval AR, the ultrasonic control device 010 can output a power control signal to the driving device 020, and the driving device 020 can control the output power of the ultrasonic transducer 041 to be the first power based on the power control signal; when the ultrasonic transducer 041 rotates to outside the angle interval AR, the ultrasonic control device 010 can output a power control signal to the driving device 020, and the driving device 020 can control the output power of the ultrasonic transducer 041 to be the second power based on the power control signal; the first power is greater than 0w, and the second power is 0w. In this way, the ultrasonic energy output of the ultrasonic transducer 041 and the rotation position of the ultrasonic transducer 041 can be synchronized in real time to achieve precise selective ablation.

[0111] In other optional embodiments, the driving device 020 may also obtain the current rotation position through the synchronization detection module 071, and control the output power of the ultrasonic transducer 041 according to the current rotation position and angle range.

[0112] Exemplarily, the synchronization detection module 071 is digitally connected to the driving device 020, and the power module in the driving device 020 can obtain the rotation phase information of the motor, that is, the current rotation position of the ultrasonic transducer 041, through the synchronization detection module 071, and when the ultrasonic transducer 041 rotates to within the angle interval AR, the output power of the ultrasonic transducer 041 is controlled to be the first power, and when the ultrasonic transducer 041 rotates to outside the angle interval AR, the output power of the ultrasonic transducer 041 is controlled to be the second power. Real-time synchronization between the ultrasonic energy output of the ultrasonic transducer 041 and the rotation position of the ultrasonic transducer 041 can also be achieved.

[0113] Optional, continue to refer to Figure 4 The catheter monitoring device 070 also includes a processing module 072 , a temperature detection module 073 , a state identification module 074 and an access detection module 075 . The access detection module 075 is used to obtain the connection status of the ablation catheter 030 at the driving output end of the driving device 020, and output a connection detection signal to the processing module 072; the state identification module 074 is used to identify the parameter information of the ablation catheter 030 when the connection status is connected, and determine the usage status of the ablation catheter 030 according to the parameter information, and output a usage detection signal to the processing module 072; the temperature detection module 073 is used to obtain the current temperature of the ultrasonic transducer 041 when the usage status is not in use, and output a temperature detection signal to the processing module 072; the processing module 072 is used to receive the connection detection signal, the usage detection signal and the temperature detection signal, and based on the connection detection signal, the usage detection signal and the temperature detection signal, output a first detection control signal, a second detection control signal and a third detection control signal to the temperature detection module 073, the state identification module 074 and the access detection module 075 respectively; the processing module 072 is also used to feed back at least one of the connection detection signal, the usage detection signal and the temperature detection signal to the ultrasonic control device 010.

[0114] Exemplarily, the processing module 072 can control the access detection module 075, the state identification module 074 and the temperature detection module 073 to work, and can also receive the detection and identification results of the access detection module 075, the state identification module 074 and the temperature detection module 073. The processing module 072 can control the temperature detection module 073 to obtain the current temperature of the ultrasonic transducer 041 after the driving device 020 is connected to the ablation catheter 030; the processing module 072 can also control the access detection module 075 to continue to detect whether the driving device 020 is connected to the ablation catheter 030 after receiving the current temperature, and control the temperature detection module 073 to continue to obtain the current temperature of the ultrasonic transducer 041 after the driving device 020 is connected to the ablation catheter 030 until the driving device 020 is no longer connected to the ablation catheter 030.

[0115] Based on the above embodiment, the processing module 072 may feed back one or more of the detection and identification results of the access detection module 075 , the state identification module 074 and the temperature detection module 073 to the ultrasonic control device 010 and / or the driving device 020 .

[0116] Exemplarily, the ultrasonic control device 010 may also receive the identification result of the state identification module 074 through the processing module 072, and after determining that the ablation catheter 030 is an unused ablation catheter 030, control the driving device 020 to start working, so as to avoid the reuse of the used ablation catheter 030 and cause cross infection; the ultrasonic control device 010 may also control the temperature detection module 073 to start working through the processing module 072 after the driving device 020 starts working; if the ablation catheter 030 is a used ablation catheter 030, an alarm is issued, an alarm message is output, and the driving device 020 is controlled not to work. After the driving device 020 starts working, the driving device 020 may receive the detection result of the temperature detection module 073 through the processing module 072, and reduce the output power of the ultrasonic transducer 041 when the temperature is high, so as to perform overheat protection.

[0117] In an optional embodiment, the catheter monitoring device 070 also includes a current detection module and a voltage detection module (not shown in the figure), and the processing module 072 can control the current detection module and the voltage detection module to work and receive the detection results of the current detection module and the voltage detection module. The processing module 072 can also feed back one or more detection results of the current detection module and the voltage detection module to the ultrasonic control device 010 and / or the driving device 020 to perform overcurrent protection and / or overvoltage protection.

[0118] In another optional embodiment, the ultrasonic control device 010 can also receive one or more of the detection and identification results of the access detection module 075, the state identification module 074 and the temperature detection module 073 through the processing module 072, and output an image data signal to the connected display screen according to the detection and identification results, so that the display screen displays the above detection and identification results.

[0119] Optionally, the ultrasonic ablation system further includes a temperature regulating device (not shown in the figure). The ultrasonic control device 010 is also used to receive a temperature detection signal, determine a temperature control signal according to the temperature detection signal, and output the temperature control signal to the temperature regulating device; the temperature regulating device is controlled to receive a temperature control signal, and control the temperature of the ultrasonic transducer 041 according to the temperature control signal.

[0120] In an optional embodiment, the temperature regulating device may include a heating module and a cooling module, and the temperature regulating device may be disposed in the perfusion pump 060. When the current temperature of the ultrasonic transducer 041 is high, the temperature of the liquid in the liquid pipeline may be reduced, thereby reducing the temperature of the ultrasonic transducer 041; when the current temperature of the ultrasonic transducer 041 is low, the temperature of the liquid in the liquid pipeline may be increased, thereby increasing the temperature of the ultrasonic transducer 041. In this way, the ultrasonic transducer 041 can be stabilized within a reasonable range, which is conducive to improving the ablation effect and reducing complications.

[0121] The structures and working principles of devices such as the ultrasonic control device, the drive device, and the catheter monitoring device have been introduced above. In order to achieve more efficient operation and collaborative work, the embodiment of the present application further provides an ultrasonic ablation system, which can integrate and combine some structures in the ultrasonic ablation system to improve the overall efficiency and performance of the ultrasonic ablation system.

[0122] Figure 5 is a schematic diagram of the structure of another ultrasonic ablation system provided in an embodiment of the present application, Figure 6 is a schematic diagram of the structure of another ultrasonic ablation system provided in an embodiment of the present application, with reference to Figure 5 and Figure 6 The ultrasonic ablation system further includes an ultrasonic ablation host 100 and a handle 200. The ultrasonic control device 010 is disposed in the ultrasonic ablation host 100, and at least part of the structure of the driving device 020 is disposed in the handle 200. The ultrasonic ablation host 100 and the handle 200 are electrically connected via a cable 001, and the ultrasonic ablation host 100 and the handle 200 are also communicatively connected via an optical cable 002.

[0123] Exemplarily, the ultrasonic ablation host 100 is connected to a power line, and a power module 110 is provided in the ultrasonic ablation host 100. The ultrasonic control device 010 and the driving device 020 can receive electrical signals from the power supply network through the power module 110. The power converter, motor driver, motor, and transmission mechanism (not shown in the figure) in the driving device 020 can be provided in the handle 200, and the power module (not shown in the figure) in the driving device 020 can be provided in the ultrasonic ablation host 100. The ultrasonic control device 010 in the ultrasonic ablation host 100 can exchange information with devices outside the ultrasonic ablation host 100 through optical fiber signals, and the ultrasonic control device 010 in the ultrasonic ablation host 100 can also exchange information with other devices in the ultrasonic ablation host 100 through optical fiber signals, for example, the ultrasonic control device 010 in the ultrasonic ablation host 100 can also exchange information with the power module located in the ultrasonic ablation host 100 through optical fiber signals. Fiber optic materials are generally not conductive, so there is no need to consider voltage resistance issues and they are not easily susceptible to electrical interference. This helps improve anti-interference capabilities and reduce signal attenuation. Fiber optic connections also help simplify wiring, save internal space, and reduce wiring requirements.

[0124] In other optional embodiments, all structures of the driving device 020 can be arranged on the handle 200, that is, the power converter, motor driver, motor, transmission mechanism, power module, etc. (not shown in the figure) in the driving device 020 can be arranged on the handle 200.

[0125] On the basis of the above embodiment, the ultrasonic ablation system further includes a catheter monitoring device 070, which can be disposed in the handle 200. The catheter monitoring device 070 can also receive an electrical signal from the power supply grid through the power module 110 in the ultrasonic ablation host 100. The ultrasonic control device 010 in the ultrasonic ablation host 100 can exchange information with the catheter monitoring device 070 through optical fiber signals.

[0126] Exemplarily, the synchronization detection module 071, the processing module 072, the temperature detection module 073, the state recognition module 074 and the access detection module 075 in the catheter monitoring device 070 can exchange information through electrical signals. Communication isolation and / or digital isolation (not shown in the figure) can be set in the handle 200 to convert the electrical signals interacted by the catheter monitoring device 070 into optical fiber signals, and the optical fiber signals are used to interact with the ultrasonic control device 010 and the driving device 020, which is beneficial to enhance the anti-interference performance during signal transmission, and can also make the catheter monitoring device 070 float to increase the anti-interference performance. In addition, the power supply can be effectively isolated to ensure the safety of electricity use.

[0127] Optional, continue to refer to Figure 6The ultrasonic ablation host 100 also includes a power module 110, which includes a switch key 120, a switch unit 130, a first isolated power supply 140, and a second isolated power supply 150. The control end 131 of the switch unit 130 is connected to the switch key 120, the first end 132 of the switch unit 130 is electrically connected to the power supply grid, and the second end 133 of the switch unit 130 is electrically connected to the first isolated power supply 140 and the second isolated power supply 150 respectively; the first isolated power supply 140 is also electrically connected to the ultrasonic control device 010; the second isolated power supply 150 is also electrically connected to the driving device 020.

[0128] The switch key 120 is used to control the conduction state of the switch unit 130. The operator can control the switch unit 130 to be turned on or off by pressing the switch key 120, thereby powering on or off the ultrasonic ablation system. The first isolated power supply 140 and the second isolated power supply 150 can completely isolate the power supply grid from the ground through an isolation transformer to prevent the power supply grid fluctuation from affecting the ultrasonic ablation system and the equipment, ensuring that the ultrasonic ablation system can operate stably, and can also reduce the ground current to prevent leakage current from causing harm to the operator or user.

[0129] Exemplarily, the switch key 120 may include a power switch 121 and an emergency stop switch 122, and both the power switch 121 and the emergency stop switch 122 may control the conduction state of the switch unit 130. The first end 132 of the switch unit 130 may be electrically connected to the power supply grid via a power line, and the power supply grid includes but is not limited to a 220V power supply grid and a 110V power supply grid. In an optional embodiment, the first end 132 of the switch unit 130 may be electrically connected to the power supply grid via a switch protection circuit and a filter circuit. In another optional embodiment, the switch unit 130 is also provided with an indicator light (not shown in the figure), and when the switch unit 130 is turned on, the indicator light is on, and when the switch unit 130 is disconnected, the indicator light is off.

[0130] The first isolated power supply 140 can convert a high voltage electrical signal of 220V or 110V into a low voltage electrical signal of 12V, and provide it to the ultrasonic control device 010 in the ultrasonic ablation host 100; the second isolated power supply 150 can convert a high voltage electrical signal of 220V or 110V into a medium voltage electrical signal of 48V, and provide it to the driving device 020 in the handle 200. In an optional embodiment, the ultrasonic ablation system further includes a catheter monitoring device 070, which can be disposed in the handle 200. A third isolated power supply (not shown in the figure) can also be disposed in the handle 200 to convert the 48V electrical signal output by the second isolated power supply 150 into a 12V electrical signal and provide it to the catheter monitoring device 070.

[0131] In an optional embodiment, the ultrasonic ablation host 100 further includes a storage module 160, and the switch indication terminal 134 of the switch unit 130 is electrically connected to the storage module 160. The power module 110 further includes a power-off delay unit 170, and the storage module 160 can be electrically connected to the first isolated power supply 140 through the power-off delay unit 170. In an optional implementation, the storage module 160 can be integrated in the ultrasonic control device 010.

[0132] Exemplarily, the storage module 160 can receive the switch indication signal through the switch indication terminal 134 of the switch unit 130 to determine the conduction state of the switch unit 130, and store data when the switch unit 130 is disconnected. The power-off delay unit 170 can provide a delayed power-off time of more than 1s, so that the storage module 160 has enough time to store the data.

[0133] On the basis of the above embodiment, the ultrasonic ablation host 100 further includes a first power-off detection circuit and a second power-off detection circuit (not shown in the figure), the first power-off detection circuit can detect whether the first isolated power supply 140 is powered off, and the second power-off detection circuit can detect whether the second isolated power supply 150 is powered off. The storage module 160 can also be electrically connected to the first power-off detection circuit and the second power-off detection circuit respectively, and store data when the first isolated power supply 140 and / or the second isolated power supply 150 is powered off.

[0134] Optional, continue to refer to Figure 5 and Figure 6 The ultrasonic ablation host 100 further includes a host display screen 180 and a speaker (not shown in the figure), and the host display screen 180 and the speaker can be electrically connected to the ultrasonic control device 010 respectively.

[0135] Exemplarily, the host display screen 180 can be a touch screen, which can display parameter information of the ablation catheter 030, and can also display information such as the output power, rotation rate, and temperature of the ultrasonic transducer 041. The speaker can emit a prompt sound when the ultrasonic transducer 041 starts working, and can also emit an alarm sound when the output power, rotation rate, temperature, and other information of the ultrasonic transducer 041 are abnormal.

[0136] In addition, the ultrasonic ablation host 100 can also be connected to an external display screen, an electronic computer (not shown in the figure), etc. to assist in display and work.

[0137] Based on the same concept, an embodiment of the present application also provides a control method for an ultrasonic ablation system. Figure 7 is a flow chart of a control method of an ultrasonic ablation system provided in an embodiment of the present application, with reference to Figure 7 , control methods include:

[0138] S110 , acquiring the position of the target to be ablated and the position of the rotation center of the ultrasonic transducer.

[0139] S120: Determine an angular interval of the target to be ablated relative to the rotation center of the ultrasound transducer based on the position of the target to be ablated and the position of the rotation center.

[0140] S130. Determine a control signal based on the angle interval.

[0141] S140: Send a control signal, where the control signal is used to enable the driving device to control the rotation rate and output power of the ultrasonic transducer based on the control signal.

[0142] In an optional embodiment, the control signal includes a rate control signal and a power control signal;

[0143] Based on the angle interval, a control signal is determined, including:

[0144] If the angle interval is 360 degrees, determining the rate control signal to be a first rate control signal, and determining the power control signal to be a first power control signal;

[0145] The first rate control signal is used to enable the driving device to control the ultrasonic transducer to rotate at a first rate based on the first rate control signal, and the first power control signal is used to enable the driving device to control the output power of the ultrasonic transducer to be a first power based on the first power control signal.

[0146] In yet another optional embodiment, the control signal comprises a power control signal;

[0147] Based on the angle interval, a control signal is determined, including:

[0148] If the angle interval is less than 360 degrees, it is determined whether the ultrasonic transducer is rotated within the angle interval;

[0149] If the ultrasonic transducer rotates to the angle interval, determining that the power control signal is the first power control signal;

[0150] If the ultrasonic transducer does not rotate to the angle interval, determining that the power control signal is a second power control signal;

[0151] Among them, the first power control signal is used to enable the driving device to control the output power of the ultrasonic transducer to a first power based on the first power control signal, and the second power control signal is used to enable the driving device to control the output power of the ultrasonic transducer to a second power based on the second power control signal, and the first power and the second power are not equal.

[0152] In an optional embodiment, the control signal includes a power control signal;

[0153] Based on the angle interval, the control signal is determined, including:

[0154] If the angle interval includes multiple sub-intervals, the control signal includes multiple sub-power control signals, the multiple sub-power control signals correspond to the multiple sub-intervals one by one, and when the ultrasonic transducer rotates to the corresponding sub-interval, the power control signal is determined to be the corresponding sub-power control signal;

[0155] Each sub-power control signal is used to enable the ultrasonic transducer to rotate to a corresponding sub-interval and output a transmission power corresponding to the corresponding sub-power control signal.

[0156] Based on the above embodiment, the control signal further includes a rate control signal;

[0157] Based on the angle interval, determining the control signal also includes:

[0158] If the ultrasonic transducer rotates to the angle interval, determining that the rate control signal is a first rate control signal;

[0159] If the ultrasonic transducer does not rotate to the angle interval, determining that the rate control signal is a second rate control signal;

[0160] Among them, the first rate control signal is used to enable the driving device to control the ultrasonic transducer to rotate at a first rate based on the first rate control signal, and the second rate control signal is used to enable the driving device to control the ultrasonic transducer to rotate at a second rate based on the second rate control signal, and the first rate and the second rate are not equal.

[0161] The control method of the ultrasonic ablation system provided in the embodiments of the present application is applied to the ultrasonic control device provided in any embodiment of the present application, and is used to control the ultrasonic ablation system provided in any embodiment of the present application, and has the corresponding technical characteristics and beneficial effects of the ultrasonic ablation system. For the contents not fully described in the embodiments of the control method of the ultrasonic ablation system, refer to the above description of the ultrasonic ablation system and will not be repeated here.

[0162] Note that the above are only preferred embodiments of the present application and the technical principles used. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present application. Therefore, although the present application is described in more detail through the above embodiments, the present application is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. An ultrasonic ablation system, characterized in that: include: Ultrasonic control device, driving device, ablation catheter and ultrasonic transducer; The driving control end of the driving device is connected to the ultrasonic control device, the driving output end of the driving device is connected to the first end of the ablation catheter, and the second end of the ablation catheter is provided with the ultrasonic transducer; The ultrasonic control device is used to determine the angle interval of the target to be ablated relative to the rotation center of the ultrasonic transducer, and determine a control signal according to the angle interval, and output the control signal to the driving device; The driving device is used to receive the control signal, and drive the ultrasonic transducer to rotate at a set speed based on the control signal, and control the output power of the ultrasonic transducer according to the control signal during the rotation of the ultrasonic transducer.

2. The ultrasonic ablation system according to claim 1, characterized in that: The control signal includes a rate control signal and a power control signal; in terms of determining the control signal according to the angle interval, the ultrasonic control device is specifically used for: If the angle interval is 360 degrees, determining that the rate control signal is a first rate control signal, and determining that the power control signal is a first power control signal; The first rate control signal is used to enable the driving device to control the ultrasonic transducer to rotate at a first rate based on the first rate control signal, and the first power control signal is used to enable the driving device to control the output power of the ultrasonic transducer to a first power based on the first power control signal.

3. The ultrasonic ablation system according to claim 1, characterized in that: The control signal includes a power control signal; in terms of determining the control signal according to the angle interval, the ultrasonic control device is specifically used for: If the angle interval is less than 360 degrees, when the ultrasonic transducer rotates within the angle interval, the power control signal is determined to be a first power control signal, and when the ultrasonic transducer rotates outside the angle interval, the power control signal is determined to be a second power control signal; Among them, the first power control signal is used to enable the driving device to control the output power of the ultrasonic transducer to be a first power based on the first power control signal, and the second power control signal is used to enable the driving device to control the output power of the ultrasonic transducer to be a second power based on the second power control signal, and the first power and the second power are not equal.

4. The ultrasonic ablation system according to claim 3, characterized in that: The control signal also includes a rate control signal; in terms of determining the control signal according to the angle interval, the ultrasonic control device is specifically further used for: If the angle interval is less than 360 degrees, when the ultrasonic transducer rotates within the angle interval, the rate control signal is determined to be a first rate control signal, and when the ultrasonic transducer rotates outside the angle interval, the rate control signal is determined to be a second rate control signal; The first rate control signal is used to enable the driving device to control the ultrasonic transducer to rotate at a first rate based on the first rate control signal, and the second rate control signal is used to enable the driving device to control the ultrasonic transducer to rotate at a second rate based on the second rate control signal, and the first rate and the second rate are not equal.

5. The ultrasonic ablation system according to claim 1, characterized in that: The ultrasonic ablation system further comprises a catheter monitoring device, wherein the catheter monitoring device comprises a synchronous detection module; The synchronization detection module is used to detect the current rotation position of the ultrasonic transducer and output a rotation synchronization signal; The ultrasonic control device is also used to receive the rotation synchronization signal and determine the control signal according to the rotation synchronization signal; The driving device is also used to receive the rotation synchronization signal and control the output power of the ultrasonic transducer according to the rotation synchronization signal during the rotation of the ultrasonic transducer.

6. The ultrasonic ablation system according to claim 5, characterized in that: The catheter monitoring device also includes a processing module, a temperature detection module, a state identification module and an access detection module; The connection detection module is used to obtain the connection status of the ablation catheter at the driving output end of the driving device, and output a connection detection signal to the processing module; The state identification module is used to identify the parameter information of the ablation catheter when the connection state is connected, determine the use state of the ablation catheter according to the parameter information, and output a use detection signal to the processing module; The temperature detection module is used to detect the current temperature of the ultrasonic transducer when the use state is not in use, and output a temperature detection signal to the processing module; The processing module is used to receive the connection detection signal, the use detection signal and the temperature detection signal, and output a first detection control signal, a second detection control signal and a third detection control signal to the temperature detection module, the state identification module and the access detection module respectively based on the connection detection signal, the use detection signal and the temperature detection signal; The processing module is further configured to feed back at least one of the connection detection signal, the use detection signal and the temperature detection signal to the ultrasonic control device.

7. The ultrasonic ablation system according to claim 6, characterized in that: Also includes: Temperature regulating device; The ultrasonic control device is also used to receive the temperature detection signal, determine a temperature control signal according to the temperature detection signal, and output the temperature control signal to the temperature adjustment device; The temperature regulating device is used to receive the temperature control signal and control the temperature of the ultrasonic transducer according to the temperature control signal.

8. The ultrasonic ablation system according to claim 1, characterized in that: Also includes: Ultrasonic ablation host and handle; The ablation host and the handle are electrically connected via a cable, and the ablation host and the handle are also communicatively connected via an optical cable; The ultrasonic control device is arranged in the ultrasonic ablation main unit, and at least part of the structure of the driving device is arranged in the handle.

9. The ultrasonic ablation system according to claim 8, characterized in that: The ultrasonic ablation host also includes a power module; The power supply module includes a switch key, a switch unit, a first isolated power supply and a second isolated power supply; The control end of the switch unit is connected to the switch key, the first end of the switch unit is electrically connected to the power supply grid, and the second end of the switch unit is electrically connected to the first isolated power supply and the second isolated power supply respectively; the first isolated power supply is also electrically connected to the ultrasonic control device; and the second isolated power supply is also electrically connected to the drive device.

10. The ultrasonic ablation system according to claim 9, characterized in that: The ultrasonic ablation host also includes a storage module; the power supply module also includes a power-off delay unit; The switch indicating end of the switch unit is electrically connected to the storage module; the storage module is electrically connected to the first isolation power supply through the power-off delay unit.

11. The ultrasonic ablation system according to claim 8, characterized in that: The ultrasonic ablation system further comprises a foot switch, wherein the foot switch is communicatively connected with the ultrasonic control device; The foot switch is used to output a foot signal to the ultrasonic control device through a contact state; The control signal includes a power control signal; the ultrasonic control device is further used to receive the foot pedal signal and determine the power control signal according to the foot pedal signal; The power control signal is used to enable the driving device to control the output power of the ultrasonic transducer based on the power control signal.

12. A control method for an ultrasonic ablation system, characterized in that: The control method comprises: Acquire the position of the target to be ablated and the position of the rotation center of the ultrasonic transducer; Determining an angular interval of the target to be ablated relative to the rotation center of the ultrasonic transducer based on the position of the target to be ablated and the position of the rotation center; Based on the angle interval, determining a control signal; The control signal is sent, and the control signal is used to enable the driving device to control the rotation speed and output power of the ultrasonic transducer based on the control signal.

13. The control method of the ultrasonic ablation system according to claim 12, characterized in that: The control signal includes a rate control signal and a power control signal; Based on the angle interval, determining a control signal includes: If the angle interval is 360 degrees, determining that the rate control signal is a first rate control signal, and determining that the power control signal is a first power control signal; The first rate control signal is used to enable the driving device to control the ultrasonic transducer to rotate at a first rate based on the first rate control signal, and the first power control signal is used to enable the driving device to control the output power of the ultrasonic transducer to a first power based on the first power control signal.

14. The control method of the ultrasonic ablation system according to claim 12, characterized in that: The control signal comprises a power control signal; Based on the angle interval, determining a control signal includes: If the angle interval is less than 360 degrees, determining whether the ultrasonic transducer is rotated to within the angle interval; If the ultrasonic transducer rotates to the angle interval, determining that the power control signal is a first power control signal; If the ultrasonic transducer does not rotate to the angle interval, determining that the power control signal is a second power control signal; Among them, the first power control signal is used to enable the driving device to control the output power of the ultrasonic transducer to be a first power based on the first power control signal, and the second power control signal is used to enable the driving device to control the output power of the ultrasonic transducer to be a second power based on the second power control signal, and the first power and the second power are not equal.

15. The control method of the ultrasonic ablation system according to claim 14, characterized in that: The control signal also includes a rate control signal; Based on the angle interval, determining a control signal further includes: If the ultrasonic transducer rotates to the angle interval, determining that the rate control signal is a first rate control signal; If the ultrasonic transducer does not rotate to the angle interval, determining that the rate control signal is a second rate control signal; The first rate control signal is used to enable the driving device to control the ultrasonic transducer to rotate at a first rate based on the first rate control signal, and the second rate control signal is used to enable the driving device to control the ultrasonic transducer to rotate at a second rate based on the second rate control signal, and the first rate and the second rate are not equal.

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