Acoustic power adjusting circuit and ultrasonic therapeutic apparatus

Abstract

The utility model provides a sound power adjusting circuit and an ultrasonic therapeutic apparatus with the adjustable sound power, the sound power adjusting circuit comprises a main control module, a programmable power supply module and a power control module, the main control module generates a voltage modulation signal and / or a pulse modulation signal according to target output power required by treatment, and the power control module outputs the voltage modulation signal and / or the pulse modulation signal to the programmable power supply module; the programmable power supply module and the power control module carry out voltage modulation and duty ratio modulation on the ultrasonic signals according to the voltage modulation signals and the pulse modulation signals output by the main control module respectively so as to change the sound pressure amplitude and the duty ratio of the ultrasonic signals, and finally the ultrasonic signals consistent with the target output power are output through the output module. When the ultrasonic therapeutic apparatus is used for treating the patient, the ultrasonic signal output of the sound pressure amplitude and / or the duty ratio corresponding to the target output power can be determined according to the actual condition of the patient, single or synchronous adjustment of the sound power is achieved, and various treatment scenes can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic electronic circuits, and particularly relates to a sound power adjustment circuit and an ultrasonic therapeutic apparatus. Background Art

[0002] An ultrasonic therapeutic apparatus is a clinical medical device that uses ultrasonic waves for disease treatment. Its working principle is based on the action of ultrasonic wave energy with a certain power intensity on human tissues, and physical treatment is performed on human tissues using the thermal effect, mechanical effect, and / or cavitation effect of ultrasonic waves. During the treatment process, different levels of sound power output need to be selected according to the treatment site and symptoms.

[0003] There are two traditional ways to change the sound power output. The first is to adjust the output power by changing the duty cycle of the ultrasonic signal. Although this method can quickly change the output power, the sound pressure output at different levels of output power is the same. The second is to adjust the output power by changing the amplitude of the ultrasonic signal. This method can achieve adjustable sound pressure at different levels, but its power adjustment range is relatively large. Especially when the power output is low, the change amplitude of the sound pressure is large, which undoubtedly increases the difficulty of regulation.

[0004] It can be seen that the existing ultrasonic therapeutic apparatus still has defects in adjusting the output sound power, and cannot synchronously adjust the sound power and sound pressure, so that the output ultrasonic signal can meet various treatment scenarios and make the patient more comfortable during the treatment process. Summary of the Utility Model

[0005] The utility model provides a sound power adjustment circuit and an ultrasonic therapeutic apparatus with adjustable sound power to solve the technical problem in the prior art that the sound power and sound pressure cannot be synchronously adjusted, and the ultrasonic signals with different powers output are not sufficient to meet various treatment scenarios.

[0006] In a first aspect, an embodiment of the present application provides a sound power adjustment circuit, which is applied to an ultrasonic therapeutic apparatus. The adjustment circuit includes:

[0007] An input module, which is connected to an ultrasonic signal generator and an external input power supply in the ultrasonic therapeutic apparatus; the input module is used to receive the ultrasonic signal sent by the ultrasonic signal generator and the input voltage output by the external input power supply;

[0008] A main control module, which is used to generate a voltage modulation signal and / or a pulse modulation signal according to the target output power of the ultrasonic therapeutic apparatus;

[0009] A programmable power supply module, connected to the input module and the main control module; the programmable power supply module is configured to receive the input voltage and the voltage modulation signal, and adjust the amplitude of the input voltage according to the voltage modulation signal, generate and output the modulated ultrasonic voltage;

[0010] A power control module, connected to the input module and the main control module; the power control module is configured to receive the ultrasonic signal and the pulse modulation signal, and adjust the duty cycle of the ultrasonic signal according to the pulse modulation signal, generate and output the modulated ultrasonic signal;

[0011] An output module, respectively connected to the programmable power supply module and the power control module; the output module is configured to receive the modulated ultrasonic voltage and the modulated ultrasonic signal, and output an ultrasonic signal consistent with the target output power.

[0012] In some embodiments, the programmable power supply module includes a DCDC buck-boost chip, a first capacitor, a boost unit, a buck unit, a third capacitor, and a first inductor;

[0013] The DCDC buck-boost chip includes a VIN input terminal, a signal input terminal, a first drive terminal, a second drive terminal, a boost control terminal, a buck control terminal, a third drive terminal, a fourth drive terminal, and a VOUT output terminal; the VIN input terminal of the DCDC buck-boost chip is connected to the VIN input terminal of the programmable power supply module for obtaining the input voltage; the signal input terminal of the DCDC buck-boost chip is connected to the main control module for obtaining the voltage modulation signal; the VOUT output terminal of the DCDC buck-boost chip is connected to the output terminal of the programmable power supply module for outputting the ultrasonic voltage;

[0014] The first end of the first capacitor is connected to the first input terminal of the programmable power supply module, and the second end of the first capacitor is connected to the preset voltage terminal; the first end of the boost unit is connected to the first input terminal of the programmable power supply module, the second end of the boost unit is connected to the first driving terminal of the DCDC buck-boost chip, the third end of the boost unit is connected to the second driving terminal of the DCDC buck-boost chip, the fourth end of the boost unit is connected to the boost control terminal of the DCDC buck-boost chip, and the fifth end of the boost unit is connected to the preset voltage terminal; the first end of the buck unit is connected to the output terminal of the programmable power supply module, the second end of the buck unit is connected to the third driving terminal of the DCDC buck-boost chip, the third end of the buck unit is connected to the fourth driving terminal of the DCDC buck-boost chip, the fourth end of the buck unit is connected to the buck control terminal of the DCDC buck-boost chip, and the fifth end of the buck unit is connected to the preset voltage terminal; the first end of the third capacitor is connected to the output terminal of the programmable power supply module, and the second end of the third capacitor is connected to the preset voltage; the first end of the first inductor is connected to the third end of the boost unit, and the second end of the first inductor is connected to the third end of the buck unit;

[0015] The DCDC buck-boost chip is configured to generate a boost modulation signal according to the voltage modulation signal to control the boost unit to output an ultrasonic voltage higher than the input voltage; and is configured to generate a buck modulation signal according to the voltage modulation signal to control the buck unit to output an ultrasonic voltage lower than the input voltage.

[0016] In some embodiments, the DCDC buck-boost chip further includes a first power output terminal;

[0017] The boost unit includes a first switching transistor, a second switching transistor, and a sixth capacitor; wherein, the control terminal of the first switching transistor is connected to the second end of the boost unit, the first end of the first switching transistor is connected to the first end of the boost unit, and the second end of the first switching transistor is connected to the third end of the boost unit; the control terminal of the second switching transistor is connected to the fourth end of the boost unit, the first end of the second switching transistor is connected to the second end of the first switching transistor, and the second end of the second switching transistor is connected to the fifth end of the boost unit; the first end of the sixth capacitor is connected to the first power output terminal, and the second end of the sixth capacitor is connected to the second end of the first switching transistor.

[0018] In some embodiments, the DCDC buck-boost chip further includes a second power output terminal;

[0019] The step-down unit includes a third switching transistor, a fourth switching transistor, and an eighth capacitor; wherein, the control terminal of the third switching transistor is connected to the second terminal of the step-down unit, the first terminal of the third switching transistor is connected to the first terminal of the step-down unit, and the second terminal of the third switching transistor is connected to the third terminal of the step-down unit; the control terminal of the fourth switching transistor is connected to the fourth terminal of the step-down unit, the first terminal of the fourth switching transistor is connected to the second terminal of the third switching transistor, and the second terminal of the fourth switching transistor is connected to the fifth terminal of the step-down unit; the first terminal of the eighth capacitor is connected to the second power output terminal, and the second terminal of the eighth capacitor is connected to the second terminal of the third switching transistor.

[0020] In some embodiments, the programmable power supply module further includes a first current detection unit composed of a first resistor, a second resistor, a third resistor, and a second capacitor, a second current detection unit composed of a fourth resistor, a fifth resistor, a sixth resistor, and a fourth capacitor, and a seventh capacitor and a ninth capacitor; the DCDC buck-boost chip further includes a first current detection terminal, a second current detection terminal, a third current detection terminal, a fourth current detection terminal, and a VCC power supply terminal;

[0021] The first terminal of the first resistor is connected to the first terminal of the first capacitor, and the second terminal of the first resistor is connected to the first terminal of the first switching transistor; the first terminal of the second resistor is connected to the first terminal of the first resistor, and the second terminal of the second resistor is connected to the first current detection terminal; the first terminal of the third resistor is connected to the second terminal of the first resistor, and the second terminal of the third resistor is connected to the second current detection terminal; the first terminal of the second capacitor is connected to the second terminal of the second resistor, and the second terminal of the second capacitor is connected to the second terminal of the third resistor;

[0022] The first terminal of the fourth resistor is connected to the first terminal of the third switching transistor, and the second terminal of the fourth resistor is used to output the ultrasonic voltage; the first terminal of the fifth resistor is connected to the first terminal of the fourth resistor, and the second terminal of the fifth resistor is connected to the third current detection terminal; the first terminal of the sixth resistor is connected to the second terminal of the fourth resistor, and the second terminal of the sixth resistor is connected to the fourth current detection terminal; the first terminal of the fourth capacitor is connected to the second terminal of the fifth resistor, and the second terminal of the fourth capacitor is connected to the second terminal of the sixth resistor;

[0023] The first terminal of the seventh capacitor is connected to the VCC terminal of the DCDC buck-boost chip, and the second terminal of the seventh capacitor is connected to the preset voltage terminal; the first terminal of the ninth capacitor is connected to the VOUT output terminal of the DCDC buck-boost chip, and the second terminal of the ninth capacitor is connected to the preset voltage terminal.

[0024] In some embodiments, the buck-boost DCDC chip is a buck-boost chip with the model number SP1260HN.

[0025] In some embodiments, the power control module includes a logic AND gate;

[0026] The first input terminal of the logic AND gate is connected to the output terminal of the ultrasonic signal generator, and the second input terminal of the logic AND gate is connected to the PWM signal output terminal of the main control module; the logic AND gate is used to modulate the duty cycle of the ultrasonic signal output by the ultrasonic signal generator according to the duty cycle of the PWM signal output by the main control module, and output the modulated ultrasonic signal through its output terminal.

[0027] In some embodiments, the main control module uses a microcontroller with the model number STM8L152K4.

[0028] In a second aspect, an embodiment of the present application further provides an ultrasonic therapeutic apparatus, including:

[0029] An ultrasonic signal generator for generating an initial ultrasonic signal;

[0030] The acoustic power adjustment circuit according to any embodiment of the first aspect;

[0031] A signal amplifier connected to the output module of the acoustic power adjustment circuit for amplifying the modulated ultrasonic signal;

[0032] A transducer connected to the signal amplifier for converting the ultrasonic signal into an acoustic energy signal acting on human tissue.

[0033] In some embodiments, the ultrasonic signal generator is an ultrasonic signal frequency generator with the model number MS5351M.

[0034] The acoustic power adjustment circuit and the ultrasonic therapeutic apparatus with adjustable acoustic power provided by the embodiments of the present application. The acoustic power adjustment circuit includes a main control module, a programmable power supply module and a power control module. Among them, the main control module generates a voltage modulation signal and / or a pulse modulation signal according to the target output power required for treatment. The programmable power supply module and the power control module respectively perform voltage modulation and duty cycle modulation on the ultrasonic signal according to the voltage modulation signal and the pulse modulation signal output by the main control module to change the sound pressure amplitude and duty cycle of the ultrasonic signal, and finally output an ultrasonic signal consistent with the target output power through the output module. The present application realizes that when treating a patient with an ultrasonic therapeutic apparatus, the ultrasonic signal output corresponding to the sound pressure amplitude and / or duty cycle corresponding to the target output power can be determined according to the actual situation of the patient, realizes the single or synchronous adjustment of the acoustic power, enables the output ultrasonic signals with different powers to meet various treatment scenarios, and has a better treatment effect. Brief Description of the Drawings

[0035] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with this application, and are used together with the specification to explain the principles of this application.

[0036] Figure 1 Schematic diagram of the structure of an ultrasonic therapeutic apparatus provided by an embodiment of this application;

[0037] Figure 2 Schematic diagram of the structure of a sound power adjustment circuit provided by an embodiment of this application;

[0038] Figure 3 Circuit diagram of a programmable power supply module provided by an embodiment of this application;

[0039] Figure 4 Circuit diagram of a sound power adjustment circuit provided by an embodiment of this application.

[0040] Through the above-mentioned accompanying drawings, specific embodiments of this application have been shown, and there will be more detailed descriptions hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by referring to specific embodiments. Detailed Description of the Embodiments

[0041] The present utility model will be further described in detail below in conjunction with the accompanying drawings through specific embodiments. Similar elements in different embodiments are labeled with related similar element numbers. In the following embodiments, many detailed descriptions are provided to enable a better understanding of this application. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, or methods. In some cases, some operations related to this application are not shown or described in the specification to avoid overwhelming the core part of this application with excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the descriptions in the specification and general technical knowledge in the art.

[0042] In addition, the features, operations, or characteristics described in the specification can be combined in any appropriate manner to form various embodiments. At the same time, the steps or actions in the method description can also be reordered or adjusted in an obvious manner by those skilled in the art. Therefore, the various sequences in the specification and drawings are only for clearly describing a certain embodiment and do not mean that they are the necessary sequences, unless it is stated that a certain sequence must be followed.

[0043] The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of this application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are usually of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after. And the "connection" and "coupling" mentioned in this application, unless otherwise specified, both include direct and indirect connection (coupling).

[0044] The following will specifically describe the technical solution of this application and how the technical solution of this application solves the above technical problems with specific embodiments. These several specific embodiments below can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of this application will be described below with reference to the drawings.

[0045] Figure 1 It is a schematic structural diagram of an ultrasonic therapeutic apparatus provided by an embodiment of this application. As Figure 1 shown, the ultrasonic therapeutic apparatus provided by this embodiment includes an ultrasonic signal generator 110, an acoustic power adjustment circuit 120, a signal amplifier 130, and a transducer 140.

[0046] In this embodiment, the ultrasonic therapeutic apparatus is a medical device that uses high-frequency sound waves (ultrasound) to generate thermal and mechanical effects in human tissues to achieve the treatment purpose. The ultrasonic signal generator 110, as the core of the entire system, is used to generate an initial ultrasonic signal, and the frequency of the signal is usually between 1 and 20 megahertz, and the specific frequency depends on the treatment requirements. The acoustic power adjustment circuit 120 is connected to the ultrasonic signal generator 110, and is used to receive the signal of the ultrasonic signal generator 110 and adjust the power of the signal as needed. By adjusting the power, the penetration depth and treatment effect of the ultrasound in human tissues can be controlled. This is crucial for ensuring the safety and effectiveness of the treatment. The signal amplifier 130 is connected to the output of the acoustic power adjustment circuit 120, and is used to amplify the signal adjusted by the acoustic power adjustment circuit 120 to enhance its energy, so as to ensure that the signal has sufficient energy to drive the transducer 140. The transducer 140 is used to convert the amplified electrical signal into ultrasonic vibrations and transmit them to the treatment head, and finally act on human tissues. The transducer 140 is a key component in the ultrasonic therapeutic apparatus, which determines the generation and propagation efficiency of the ultrasound. Through the transducer 140, the ultrasound can accurately act on human tissues to produce the desired treatment effect.

[0047] It should be noted that the main improvement of this embodiment lies in the specific implementation manner in which the acoustic power adjustment circuit 120 adjusts the power of the received initial ultrasonic signal as needed. Therefore, the acoustic power adjustment circuit 120 of the present application can be used in any ultrasonic therapeutic apparatus, having the technical effects of the upper acoustic power adjustment circuit 120, and does not limit the specific structure of the ultrasonic therapeutic apparatus. Other structures of the ultrasonic therapeutic apparatus provided by the present application (such as the housing and other structures) will not be elaborated herein.

[0048] As is well known, an ultrasonic therapeutic apparatus is a medical device that utilizes high-frequency sound waves (ultrasonic waves) to generate thermal effects and mechanical effects in human tissues to achieve the purpose of treatment. The necessity of acoustic power adjustment in an ultrasonic therapeutic apparatus lies in its ability to adapt to different treatment requirements, ensure treatment safety, improve treatment efficiency, and meet diverse application scenarios. Different patients, different diseases, and different stages of diseases have different absorption capabilities and treatment requirements for ultrasonic energy. The acoustic power adjustment function allows doctors to precisely set the output power of the ultrasonic therapeutic apparatus according to the specific conditions of the patient to achieve personalized treatment. By adjusting the acoustic power, the distribution and penetration depth of ultrasonic energy in human tissues can be optimized, thereby improving the treatment effect. For example, in ultrasonic drug penetration therapy, an appropriate acoustic power can promote better penetration of the drug into the target tissue. At the same time, by adjusting the acoustic power, doctors can shorten the treatment time and improve the treatment efficiency on the premise of ensuring the treatment effect, especially for patients who frequently receive ultrasonic treatment. During the treatment process, excessive ultrasonic energy may cause tissue damage or even burns. The acoustic power adjustment function allows doctors to monitor and adjust the output power in real time during the treatment process to ensure that the ultrasonic energy is within a safe range and avoid unnecessary harm to the patient.

[0049] As described in the background art, the existing acoustic power adjustment methods generally adopt amplitude modulation or changing the pulse duty cycle adjustment method. Among them, the amplitude modulation method changes the output amplitude of the ultrasonic wave to achieve the purpose of changing the power. Although this method can adjust the ultrasonic power, there are changes in the amplitude of the ultrasonic wave under different gears, which causes changes in the acoustic pressure. When the power adjustment range is large, especially in the low-power output state, the acoustic pressure will be greatly reduced, increasing the adjustment difficulty. And the pulse duty cycle adjustment method changes the average power output of the ultrasonic wave by changing the time interval ratio of ultrasonic emission and stop to achieve the purpose of adjusting the acoustic power. This method can quickly change the power output by changing the duty cycle of the modulation pulse, but it cannot change the acoustic pressure, and the acoustic pressure remains the same in all gears. It can be seen that when the existing technology adjusts the acoustic power output, it cannot more flexibly apply to more application scenarios while taking into account both the duty cycle and the acoustic pressure of the ultrasonic signal.

[0050] The following elaborates on the specific process of the method for performing fuse control on the acoustic power adjustment circuit 120.

[0051] Figure 2 The figure is a schematic structural diagram of a sound power adjustment circuit provided by an embodiment of the present application. As Figure 2 shown, the sound power adjustment circuit 120 provided in this embodiment includes an input module 210, a main control module 220, a programmable power supply module 230, a power control module 240, and an output module 250.

[0052] In this embodiment, the input module 210 is connected to the ultrasonic signal generator 110 in the ultrasonic therapeutic apparatus, and is used to receive the initial ultrasonic signal emitted by the ultrasonic signal generator 110. At the same time, it is also connected to an external input power supply, and is used to receive the input voltage output by the external input power supply.

[0053] The main control module 220 is connected to the input module 210. The main control module 220 is used to obtain a control signal input from the outside. The information represented by the control signal includes the target output power that the ultrasonic therapeutic apparatus needs to output. The main control module 220 generates and outputs a voltage modulation signal and / or a pulse modulation signal according to the target output power of the ultrasonic therapeutic apparatus.

[0054] The programmable power supply module 230 is connected to the input module 210 and the main control module 220. The programmable power supply module 230 is used to receive the input voltage and the voltage modulation signal, and adjust the amplitude of the input voltage according to the voltage modulation signal, and generate and output a modulated ultrasonic voltage. Among them, the programmable power supply module 230 adjusts the amplitude of the input voltage according to the voltage modulation signal, and can generate an ultrasonic voltage higher than the input voltage or an ultrasonic voltage lower than the input voltage to realize the sound pressure control of the ultrasonic signal, that is, the sound pressure can be adjusted under different output powers.

[0055] The power control module 240 is connected to the input module 210 and the main control module 220. The power control module 240 is used to receive the ultrasonic signal and the pulse modulation signal, and adjust the duty cycle of the ultrasonic signal according to the pulse modulation signal, and generate and output a modulated ultrasonic signal. Among them, the pulse modulation signal output by the main control module 220 is a PWM signal, and the power control module 240 changes the intermittent ratio of the ultrasonic signal according to the duty cycle of the PWM signal, and further adjusts the average power output of the ultrasonic signal to achieve the purpose of adjusting the sound power.

[0056] The output module 250 is respectively connected to the programmable power supply module 230 and the power control module 240. The output module 250 is used to receive the modulated ultrasonic voltage and the modulated ultrasonic signal, and output an ultrasonic signal consistent with the target output power.

[0057] In summary, for the acoustic power adjustment circuit provided in the embodiments of the present application, the main control module generates a voltage modulation signal and / or a pulse modulation signal according to the target output power required for treatment. The program-controlled power supply module and the power control module respectively perform voltage modulation and duty cycle modulation on the ultrasonic signal according to the voltage modulation signal and the pulse modulation signal output by the main control module, so as to change the sound pressure amplitude and duty cycle of the ultrasonic signal. Finally, the ultrasonic signal consistent with the target output power is output through the output module. The present application realizes that when treating a patient with an ultrasonic therapeutic apparatus, the ultrasonic signal output corresponding to the sound pressure amplitude and / or duty cycle corresponding to the target output power can be determined according to the actual situation of the patient, realizes the single or synchronous adjustment of the acoustic power, enables the ultrasonic signals with different output powers to meet various treatment scenarios, and has a better treatment effect.

[0058] Figure 3 The following is a circuit diagram of the program-controlled power supply module provided by an embodiment of the present application. As Figure 3 shown, in this embodiment, the program-controlled power supply module 230 includes a DCDC buck-boost chip U1, a first capacitor C1, a boost unit, a buck unit, a third capacitor C3, and a first inductor L1.

[0059] Specifically, the DCDC buck-boost chip U1 includes a VIN input terminal, a signal input terminal, a first drive terminal, a second drive terminal, a boost control terminal, a buck control terminal, a third drive terminal, a fourth drive terminal, and a VOUT output terminal; the VIN input terminal of the DCDC buck-boost chip U1 is connected to the input terminal of the program-controlled power supply module 230 for obtaining the input voltage of the external input power supply; the signal input terminal of the DCDC buck-boost chip U1 is connected to the main control module 220 for obtaining the voltage modulation signal; the VOUT output terminal of the DCDC buck-boost chip U1 is connected to the output terminal of the program-controlled power supply module 230 for outputting the ultrasonic voltage.

[0060] The first end of the first capacitor C1 is connected to the input end of the programmable power supply module 230, and the second end of the first capacitor C1 is connected to the preset voltage terminal, that is, grounded; the first end of the boost unit is connected to the input end of the programmable power supply module 230, the second end of the boost unit is connected to the first drive end of the DCDC buck-boost chip U1, the third end of the boost unit is connected to the second drive end of the DCDC buck-boost chip U1, the fourth end of the boost unit is connected to the boost control end of the DCDC buck-boost chip U1, and the fifth end of the boost unit is connected to the preset voltage terminal, that is, grounded; the first end of the buck unit is connected to the output end of the programmable power supply module 230, the second end of the buck unit is connected to the third drive end of the DCDC buck-boost chip U1, the third end of the buck unit is connected to the fourth drive end of the DCDC buck-boost chip U1, the fourth end of the buck unit is connected to the buck control end of the DCDC buck-boost chip U1, and the fifth end of the buck unit is connected to the preset voltage terminal, that is, grounded; the first end of the third capacitor C3 is connected to the output end of the programmable power supply module 230, and the second end of the third capacitor C3 is connected to the preset voltage; the first end of the first inductor L1 is connected to the third end of the boost unit, and the second end of the first inductor L1 is connected to the third end of the buck unit.

[0061] The DCDC buck-boost chip U1 is configured to generate a boost modulation signal according to a voltage modulation signal to control the boost unit to output an ultrasonic voltage higher than the input voltage; and is configured to generate a buck modulation signal according to the voltage modulation signal to control the buck unit to output an ultrasonic voltage lower than the input voltage.

[0062] More specifically, the DCDC buck-boost chip U1 further includes a first power output terminal and a second power output terminal, which are respectively configured to provide drive voltages to the boost unit and the buck unit.

[0063] In some embodiments, the boost unit includes a first switching transistor Q1, a second switching transistor Q2, and a sixth capacitor C6; wherein, the control end of the first switching transistor Q1 is connected to the second end of the boost unit, the first end of the first switching transistor Q1 is connected to the first end of the boost unit, and the second end of the first switching transistor Q1 is connected to the third end of the boost unit; the control end of the second switching transistor Q2 is connected to the fourth end of the boost unit, the first end of the second switching transistor Q2 is connected to the second end of the first switching transistor Q1, and the second end of the second switching transistor Q2 is connected to the fifth end of the boost unit; the first end of the sixth capacitor C6 is connected to the first power output terminal, and the second end of the sixth capacitor C6 is connected to the second end of the first switching transistor Q1.

[0064] In some embodiments, the buck unit includes a third switching transistor Q3, a fourth switching transistor Q4, and an eighth capacitor C8. The control terminal of the third switching transistor Q3 is connected to the second terminal of the buck unit. The first terminal of the third switching transistor Q3 is connected to the first terminal of the buck unit. The second terminal of the third switching transistor Q3 is connected to the third terminal of the buck unit. The control terminal of the fourth switching transistor Q4 is connected to the fourth terminal of the buck unit. The first terminal of the fourth switching transistor Q4 is connected to the second terminal of the third switching transistor Q3. The second terminal of the fourth switching transistor Q4 is connected to the fifth terminal of the buck unit. The first terminal of the eighth capacitor C8 is connected to the second power output terminal. The second terminal of the eighth capacitor C8 is connected to the second terminal of the third switching transistor Q3.

[0065] In some embodiments, the DCDC buck-boost chip U1 is a buck-boost chip of model SP1260HN. The buck-boost chip of SP1260HN is a high-efficiency synchronous buck-boost control chip, which can externally connect to take the power of the MOS transistor, and the power selection range of the MOS transistor is relatively wide. MOS transistors with a power of 5-100W can be selected, and the frequency is adjustable, with an efficiency as high as 98%. At the same time, SP1260HN also has a wide input voltage: DC2.7V - 36V, and a wide output voltage: DC2.0V - 36V, with a wider application range. The switching frequency of SP1260HN can be adjusted in three switching frequencies according to application requirements: 200KHZ, 400KHZ, and 600KHZ. The driving voltage of the MOS transistor can also be adjusted in three driving voltages according to application requirements: DC5.0V, DC7.5V, and DC10V to make the MOS reach the best energy efficiency.

[0066] In some embodiments, the programmable power supply module 230 further includes a first current detection unit composed of a first resistor R1, a second resistor R2, a third resistor R3, and a second capacitor C2, a second current detection unit composed of a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, and a fourth capacitor C4, and a seventh capacitor C7 and a ninth capacitor C9. The DCDC buck-boost chip U1 further includes a first current detection terminal, a second current detection terminal, a third current detection terminal, a fourth current detection terminal, and a VCC power supply terminal.

[0067] Specifically, the first terminal of the first resistor R1 is connected to the first terminal of the first capacitor C1. The second terminal of the first resistor R1 is connected to the first terminal of the first switching transistor Q1. The first terminal of the second resistor R2 is connected to the first terminal of the first resistor R1. The second terminal of the second resistor R2 is connected to the first current detection terminal. The first terminal of the third resistor R3 is connected to the second terminal of the first resistor R1. The second terminal of the third resistor R3 is connected to the second current detection terminal. The first terminal of the second capacitor C2 is connected to the second terminal of the second resistor R2. The second terminal of the second capacitor C2 is connected to the second terminal of the third resistor R3.

[0068] The first end of the fourth resistor R4 is connected to the first end of the third switching transistor Q3, and the second end of the fourth resistor R4 is used to output an ultrasonic voltage; the first end of the fifth resistor R5 is connected to the first end of the fourth resistor R4, and the second end of the fifth resistor R5 is connected to the third current detection terminal; the first end of the sixth resistor R6 is connected to the second end of the fourth resistor R4, and the second end of the sixth resistor R6 is connected to the fourth current detection terminal; the first end of the fourth capacitor C4 is connected to the second end of the fifth resistor, and the second end of the fourth capacitor C4 is connected to the second end of the sixth resistor.

[0069] The first end of the seventh capacitor C7 is connected to the VCC terminal of the DCDC buck-boost chip U1, and the second end of the seventh capacitor C7 is connected to the preset voltage terminal, that is, grounded; the first end of the ninth capacitor C9 is connected to the VOUT output terminal of the DCDC buck-boost chip U1, and the second end of the ninth capacitor C9 is connected to the preset voltage terminal, that is, grounded.

[0070] Figure 4 This is the circuit diagram of the sound power adjustment circuit provided by an embodiment of the present application. As Figure 4 shown, in this embodiment, the power control module 240 includes a logic AND gate U2.

[0071] Specifically, the first input terminal of the logic AND gate U2 is connected to the output terminal of the ultrasonic signal generator 110, and the second input terminal of the logic AND gate U2 is connected to the PWM signal output terminal of the main control module 220; the logic AND gate U2 is used to modulate the duty cycle of the ultrasonic signal output by the ultrasonic signal generator 110 according to the duty cycle of the PWM signal output by the main control module 220, and output the modulated ultrasonic signal through its output terminal.

[0072] As Figure 4 shown, in this embodiment, the main control module 220 uses a microcontroller of model STM8L152K4. STM8L152K4 is a low-power 8-bit microcontroller (MCU) produced by STMicroelectronics. It uses an enhanced STM8 CPU core to provide higher processing capabilities (up to 16 MIPS at 16 MHz), while maintaining the advantages of the CISC architecture, with improved code density and an optimized low-power operation architecture.

[0073] In other embodiments, the main control module 220 may also be a single-chip microcomputer, FPGA (Field Programmable Gate Array), DSP (Digital Signal Processor), PLC (Programmable Logic Controller), ARM processor, and PC host computer, etc., as long as it can complete a preset program according to instructions.

[0074] In this embodiment, the ultrasonic signal generator 110 uses an ultrasonic signal frequency generator with the model number MS5351M. MS5351M is a clock generator with three-channel output, which can meet the requirements of multi-channel clock signals, can completely replace traditional clock sources such as crystals, crystal oscillators, phase-locked loops, output buffers, etc., reduce the system cost and improve the integration level.

[0075] In summary, the acoustic power adjustment circuit and the ultrasonic therapeutic apparatus with adjustable acoustic power provided by the embodiments of the present application realize that when using the ultrasonic therapeutic apparatus to treat a patient, the ultrasonic signal output corresponding to the sound pressure amplitude and / or duty cycle corresponding to the target output power can be determined according to the actual situation of the patient, realizing the single or synchronous adjustment of the acoustic power, so that the ultrasonic signals with different output powers can meet a variety of treatment scenarios and have better treatment effects.

[0076] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art, without departing from the purpose of the present application and the scope protected by the claims, according to the idea of the present application, can also make several simple deductions, deformations or replacements, all of which fall within the protection scope of the present application.

Claims

1. A sound power regulation circuit, applied to an ultrasonic therapeutic apparatus, characterized in that: include: An input module connected to the ultrasonic signal generator in the ultrasonic therapeutic apparatus and an external input power supply; the input module is used to receive the ultrasonic signal emitted by the ultrasonic signal generator and the input voltage output by the external input power supply; A main control module, used for generating a voltage modulation signal and / or a pulse modulation signal according to a target output power of the ultrasonic therapeutic apparatus; A programmable power supply module is connected to the input module and the main control module; the programmable power supply module is used to receive the input voltage and the voltage modulation signal, and adjust the amplitude of the input voltage according to the voltage modulation signal, and generate and output a modulated ultrasonic voltage; A power control module connected to the input module and the main control module; the power control module is used to receive the ultrasonic signal and the pulse modulation signal, and adjust the duty cycle of the ultrasonic signal according to the pulse modulation signal to generate and output a modulated ultrasonic signal; The output module is connected to the programmable power supply module and the power control module respectively; the output module is used to receive the modulated ultrasonic voltage and the modulated ultrasonic signal, and output an ultrasonic signal consistent with the target output power.

2. The sound power regulation circuit according to claim 1, characterized in that: The programmable power supply module includes a DCDC buck-boost chip, a first capacitor, a boost unit, a buck unit, a third capacitor and a first inductor; The DCDC buck-boost chip includes a VIN input terminal, a signal input terminal, a first driving terminal, a second driving terminal, a boost control terminal, a buck control terminal, a third driving terminal, a fourth driving terminal and a VOUT output terminal; the VIN input terminal of the DCDC buck-boost chip is connected to the VIN input terminal of the programmable power module for obtaining the input voltage; the signal input terminal of the DCDC buck-boost chip is connected to the main control module for obtaining the voltage modulation signal; the VOUT output terminal of the DCDC buck-boost chip is connected to the output terminal of the programmable power module for outputting an ultrasonic voltage; The first end of the first capacitor is connected to the first input end of the programmable power module, and the second end of the first capacitor is connected to the preset voltage end; the first end of the boost unit is connected to the first input end of the programmable power module, the second end of the boost unit is connected to the first driving end of the DCDC buck-boost chip, the third end of the boost unit is connected to the second driving end of the DCDC buck-boost chip, the fourth end of the boost unit is connected to the boost control end of the DCDC buck-boost chip, and the fifth end of the boost unit is connected to the preset voltage end; the first end of the buck unit is connected to the output end of the programmable power module The first end of the first inductor is connected to the third end of the boost unit, the second end of the first inductor is connected to the third end of the boost unit, and the second end of the first inductor is connected to the third end of the buck unit; the first end of the first inductor is connected to the third end of the boost unit, and the second end of the first inductor is connected to the third end of the buck unit; The DCDC buck-boost chip is used to generate a boost modulation signal according to the voltage modulation signal to control the boost unit to output an ultrasonic voltage higher than the input voltage; and to generate a buck modulation signal according to the voltage modulation signal to control the buck unit to output an ultrasonic voltage lower than the input voltage.

3. The sound power regulation circuit according to claim 2, characterized in that: The DCDC buck-boost chip also includes a first power output terminal; The boost unit includes a first switch tube, a second switch tube and a sixth capacitor; wherein the control end of the first switch tube is connected to the second end of the boost unit, the first end of the first switch tube is connected to the first end of the boost unit, and the second end of the first switch tube is connected to the third end of the boost unit; the control end of the second switch tube is connected to the fourth end of the boost unit, the first end of the second switch tube is connected to the second end of the first switch tube, and the second end of the second switch tube is connected to the fifth end of the boost unit; the first end of the sixth capacitor is connected to the first power supply output end, and the second end of the sixth capacitor is connected to the second end of the first switch tube.

4. The sound power regulation circuit according to claim 3, characterized in that: The DCDC buck-boost chip also includes a second power output terminal; The step-down unit includes a third switch tube, a fourth switch tube and an eighth capacitor; wherein the control end of the third switch tube is connected to the second end of the step-down unit, the first end of the third switch tube is connected to the first end of the step-down unit, and the second end of the third switch tube is connected to the third end of the step-down unit; the control end of the fourth switch tube is connected to the fourth end of the step-down unit, the first end of the fourth switch tube is connected to the second end of the third switch tube, and the second end of the fourth switch tube is connected to the fifth end of the step-down unit; the first end of the eighth capacitor is connected to the second power supply output end, and the second end of the eighth capacitor is connected to the second end of the third switch tube.

5. The sound power regulation circuit according to claim 4, characterized in that: The programmable power supply module includes a first current detection unit composed of a first resistor, a second resistor, a third resistor and a second capacitor, a second current detection unit composed of a fourth resistor, a fifth resistor, a sixth resistor and a fourth capacitor, and a seventh capacitor and a ninth capacitor; the DCDC buck-boost chip also includes a first current detection terminal, a second current detection terminal, a third current detection terminal, a fourth current detection terminal and a VCC power supply terminal; The first end of the first resistor is connected to the first end of the first capacitor, and the second end of the first resistor is connected to the first end of the first switch tube; the first end of the second resistor is connected to the first end of the first resistor, and the second end of the second resistor is connected to the first current detection end; the first end of the third resistor is connected to the second end of the first resistor, and the second end of the third resistor is connected to the second current detection end; the first end of the second capacitor is connected to the second end of the second resistor, and the second end of the second capacitor is connected to the second end of the third resistor; The first end of the fourth resistor is connected to the first end of the third switch tube, and the second end of the fourth resistor is used to output the ultrasonic voltage; the first end of the fifth resistor is connected to the first end of the fourth resistor, and the second end of the fifth resistor is connected to the third current detection end; the first end of the sixth resistor is connected to the second end of the fourth resistor, and the second end of the sixth resistor is connected to the fourth current detection end; the first end of the fourth capacitor is connected to the second end of the fifth resistor, and the second end of the fourth capacitor is connected to the second end of the sixth resistor; The first end of the seventh capacitor is connected to the VCC end of the DCDC buck-boost chip, and the second end of the seventh capacitor is connected to the preset voltage end; the first end of the ninth capacitor is connected to the VOUT output end of the DCDC buck-boost chip, and the second end of the ninth capacitor is connected to the preset voltage end.

6. The sound power regulation circuit according to any one of claims 2 to 5, characterized in that: The DCDC buck-boost chip adopts a buck-boost chip with model number SP1260HN.

7. The sound power regulation circuit according to claim 6, characterized in that: The power control module includes a logic AND gate; The first input end of the logic AND gate is connected to the output end of the ultrasonic signal generator, and the second input end of the logic AND gate is connected to the PWM signal output end of the main control module; the logic AND gate is used to modulate the duty cycle of the ultrasonic signal output by the ultrasonic signal generator according to the duty cycle of the PWM signal output by the main control module, and output the modulated ultrasonic signal through its output end.

8. The sound power regulation circuit according to claim 1, characterized in that: The main control module adopts a microcontroller of model STM8L152K4.

9. An ultrasonic therapeutic apparatus, characterized in that: include: An ultrasonic signal generator, used for generating an initial ultrasonic signal; The sound power regulation circuit as claimed in any one of claims 1 to 8; A signal amplifier, connected to the output module of the sound power regulation circuit, for amplifying the modulated ultrasonic signal; The transducer is connected to the signal amplifier and is used to convert the ultrasonic signal into an acoustic energy signal acting on human tissue.

10. The ultrasonic therapeutic apparatus according to claim 9, characterized in that: The ultrasonic signal generator adopts an ultrasonic signal frequency generator of model MS5351M.

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