WO2015172415A1 - 多档位溶栓设备及其控制方法 - Google Patents

多档位溶栓设备及其控制方法 Download PDF

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Publication number
WO2015172415A1
WO2015172415A1 PCT/CN2014/079255 CN2014079255W WO2015172415A1 WO 2015172415 A1 WO2015172415 A1 WO 2015172415A1 CN 2014079255 W CN2014079255 W CN 2014079255W WO 2015172415 A1 WO2015172415 A1 WO 2015172415A1
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Prior art keywords
signal
control unit
excitation signal
pulse excitation
amplifying circuit
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PCT/CN2014/079255
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English (en)
French (fr)
Inventor
刘政
陈耀
毛志林
白宁
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深圳市威尔德医疗电子有限公司
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Publication of WO2015172415A1 publication Critical patent/WO2015172415A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N7/00—Ultrasound therapy

Definitions

  • the invention relates to a thrombolytic device, in particular to a multi-position thrombolytic device capable of adjusting different frequencies, sound pressure and sound intensity.
  • the thrombolytic device mainly uses the cavitation effect of ultrasonic waves to decompose the thrombus, and the decomposed thrombus is discharged out of the body to achieve the purpose of treating thrombosis.
  • the cavitation effect of ultrasonic waves is closely related to the parameters of ultrasonic frequency, sound pressure and sound intensity. Ultrasonic waves with different frequencies, sound pressure and sound intensity will produce cavitation effects of different intensities and cavitation of different intensities. The effect differs in the rate of decomposition and degree of decomposition of the thrombus.
  • the frequency, sound pressure, sound intensity, etc. of the ultrasonic waves emitted by the thrombolysis devices on the market are now fixed.
  • the treatment with such ultrasonic frequency, sound pressure, and sound intensity fixed thrombolytic equipment is not effective and the efficiency is not high.
  • the object of the present invention is to solve the deficiencies of the prior art and to provide a multi-position thrombolysis device capable of adjusting different frequencies, sound pressures and sound intensities.
  • a multi-position thrombolytic device includes: a CPU control unit, a button control unit, a programmable logic control unit (FPGA), a display unit, a power amplification unit, an impedance matching circuit, a thrombolysis probe, a current voltage detector, and a power supply unit.
  • the button control unit is configured to issue a command signal and transmit the command signal to the CPU control unit.
  • the CPU control unit is connected to the button control unit for receiving the command signal from the button control unit, processing and analyzing the command signal, and transmitting the processing analysis result to the programmable logic control unit.
  • the programmable logic control unit is coupled to the CPU control unit for receiving a command signal processed and analyzed from the CPU control unit and generating a first pulse excitation signal.
  • the display unit is connected to the programmable logic control unit for displaying the acoustic frequency signal, the sound pressure signal, the sound intensity signal and the pulse width signal during the thrombolysis process.
  • the power amplifying unit is connected to the programmable logic control unit for amplifying the first pulse excitation signal and generating a second pulse excitation signal of frequency conversion, amplitude, waveform and intermittent transmission.
  • the impedance matching circuit is respectively connected with the power amplifying unit and the thrombolysis probe, and is used for impedance matching and tuning matching between the second pulse excitation signal and the thrombolysis probe.
  • a thrombolysis probe converts the second pulsed excitation signal into an ultrasonic wave.
  • a current-voltage detector is connected between the thrombolysis probe and the CPU control unit for detecting the working state of the thrombolysis probe.
  • the power supply unit is respectively connected to the CPU control unit, the programmable logic control unit, and the power amplifying unit for supplying power thereto.
  • the power amplifying unit comprises a small signal controllable amplifier and a broadband linear power amplifying circuit, and the small signal controllable amplifier is connected with a programmable logic control unit (FPGA) for initial amplification of the first excitation signal;
  • the linear power amplifying circuit is connected to the small signal controllable amplifier to further amplify the first excitation signal and generate a first excitation signal for frequency conversion, amplitude, waveform and intermittent transmission.
  • the broadband linear power amplifying circuit comprises a first-stage amplifying circuit, a second-stage amplifying circuit, a three-stage amplifying circuit and a matching output circuit, and the first-stage amplifying circuit, the second-stage amplifying circuit, the three-stage amplifying circuit and the matching output circuit are in turn Electrical connection.
  • the first-stage amplifying circuit comprises a first input terminal electrically connected to the small-signal amplifier, a first output end, and a first power amplifying circuit between the first input end and the first output end; the first input end The first transmission line transformer and a transmission controller located between the first transmission line transformer and the small signal amplifier; the transmission controller receives the first pulse excitation signal amplified by the small signal amplifier and transmits the first pulse to the first transmission line transformer, and the first transmission line transformer
  • the first pulse excitation signal is divided into two third pulse excitation signals, and the two third pulse excitation signals are amplified by the first power amplification circuit to form two fourth pulse excitation signals and transmitted to the first output terminal.
  • the two-stage amplifying circuit includes a second power amplifying circuit electrically connected to the first output end, a second output end, and a second transmission transformer between the second power amplifying circuit and the second output end;
  • the power amplifying circuit receives the two fourth pulse excitation signals transmitted from the first output end and then amplifies and forms two second pulse excitation signals again, and the two fifth pulse excitation signals form a four-way sixth pulse excitation signal through the second transmission transformer. And passed to the second output.
  • the three-stage amplifying circuit includes a third input end electrically connected to the second output end, a third output end, and a third power amplifying circuit between the third input end and the third output end; the third input The terminal receives the four sixth pulse excitation signals transmitted from the second output terminal and transmits the signals to the third power amplifying circuit, and is amplified by the third power amplifying circuit to form four fourth pulse excitation signals and is transmitted to the third output terminal.
  • the matching output circuit includes a fourth input electrically coupled to the third output, an output matching terminal, and a fourth transformer between the fourth input and the output matching terminal; the fourth input receives the third output
  • the four seventh pulse excitation signals transmitted from the terminal, the fourth seventh pulse excitation signal form a second pulse excitation signal through the fourth transformer, and the second pulse excitation signal is transmitted to the impedance matching circuit through the output matching end.
  • the button control unit includes a single chip microcomputer and a button connected to the single chip microcomputer, the button is used to issue an instruction, and the single chip computer converts the command into a command signal.
  • Another solution of the invention is:
  • a multi-position thrombolysis device control method includes the following steps:
  • the first step is to turn on the power and turn on the power
  • the second step is to initialize the programmable logic control unit
  • the third step is to detect an input signal of the button, and the button control unit detects the input signal and transmits the signal to the CPU control unit;
  • the fourth step is processed by the CPU control unit, and the CPU control unit processes and analyzes the signal, and determines the signal. If the signal is valid, it is transmitted to the programmable logic control unit, and proceeds to the fifth step; if the signal is invalid , then move to the third step;
  • the first excitation signal is generated, and after receiving the valid signal, the programmable logic control unit generates a corresponding first excitation signal; the first excitation signal corresponds to an ultrasonic wave of frequency, sound pressure, sound intensity and pulse width. And displayed on the display unit;
  • the power amplification unit receives the first excitation signal, and the signal is amplified to generate a second excitation signal;
  • the impedance matching circuit receives the second excitation signal to achieve impedance matching and tuning matching between the second excitation signal and the thrombolysis probe;
  • ultrasonic waves are generated, and the thrombolysis probe generates a corresponding ultrasonic wave by matching and tuning matching with the impedance of the second excitation signal.
  • the beneficial effects of the present invention are: according to different parts of the human body and different degrees of thrombus, the programmable logic control unit (FPGA) is controlled by the button control unit to generate a first excitation signal, and the first excitation signal is amplified to generate a second The excitation signal, the thrombolysis probe then converts the second excitation signal into ultrasonic waves of different frequencies, sound pressures, sound intensities, pulse widths, and pulse frequencies to efficiently treat the patient.
  • FPGA programmable logic control unit
  • Figure 1 is a block diagram showing the structure of the present invention
  • FIG. 2 is a block diagram of a broadband linear power amplifying circuit in the present invention
  • FIG. 3 is a first-stage amplification circuit diagram of the present invention.
  • Figure 4 is a diagram of a secondary amplification circuit in the present invention.
  • Figure 5 is a three-stage amplifying circuit diagram of the present invention.
  • Figure 6 is a diagram showing a matching output circuit in the present invention.
  • Figure 7 is a control flow chart of the present invention.
  • a multi-position thrombolytic device includes a CPU control unit 160 , a display unit 100 , a button control unit 150 , a power supply unit 130 , a programmable logic control unit (FPGA ) 120 , and a power amplification unit 110 .
  • the programmable logic control unit (FPGA) 120 is respectively connected to the display unit 100, the power amplifying unit 110, the CPU control unit 160 and the power supply unit 130, and the power amplifying unit 110 is connected to the thrombolysis probe 170 through the impedance matching circuit 140, and the CPU control unit 160
  • the power control unit 150 is connected to the power supply unit 130 by being connected to the button control unit 150, the power supply unit 130, and the thrombolysis probe 170, respectively.
  • the current voltage detector 180 is connected between the thrombolysis probe 170 and the CPU control unit 160 for detecting the operating state of the thrombolysis probe 170.
  • the power supply unit 130 is connected to and supplied with power to the CPU control unit 160, the small signal controllable amplifier 111, the wideband linear power amplifying circuit 112, and the programmable logic control unit (FPGA) 120, respectively.
  • the button control unit 150 includes a single chip microcomputer and a button connected to the single chip microcomputer.
  • the MCU is directly connected to the CPU control unit 160.
  • the button includes a frequency control button and a sound pressure control button.
  • the button is sent to the CPU control unit 160 after being converted into a command signal by the MCU.
  • the CPU control unit 160 processes and analyzes the command signal, and transmits the processing and analysis results to the programmable logic control unit (FPGA) 120.
  • the programmable logic control unit (FPGA) 120 After receiving the command signal processed and analyzed by the CPU control unit 160, the programmable logic control unit (FPGA) 120 generates a first pulse excitation signal, and the first pulse excitation signal is amplified by the power amplification unit 110 to generate a frequency conversion, a variable amplitude, and a variable waveform.
  • the second pulse excitation signal is transmitted to the thrombolysis probe 170 via the impedance matching and tuning matching of the impedance matching circuit 140, and the thrombolysis probe 170 converts the second pulse excitation signal into an ultrasonic wave to treat the patient.
  • the programmable logic control unit (FPGA) 120 generates an LVDS signal timing (low voltage differential signal timing) corresponding to the first pulse excitation signal, and the LVDS signal timing is used to control the display of the display unit 100 to display the frequency of the ultrasonic wave. Sound pressure, sound intensity and pulse width for human-computer interaction.
  • the current voltage detector 180 is connected between the thrombolysis probe 170 and the CPU control unit 160 for detecting the operating state of the thrombolysis probe 170.
  • the power supply unit 130 is configured to supply power to the CPU control unit 160, the programmable logic control unit (FPGA) 120, and the power amplifying unit 110.
  • the power amplifying unit 110 includes a small signal controllable amplifier 111 and a broadband linear power amplifying circuit 112.
  • the small signal controllable amplifier 111 is coupled to a programmable logic control unit (FPGA) 120 for initial amplification of the first pulsed excitation signal.
  • the broadband linear power amplifying circuit is connected between the small signal amplifier 111 and the impedance matching circuit 140 for further amplifying the first pulse excitation signal, and generating a frequency conversion, a variable amplitude, a variable waveform and an intermittent second pulse excitation signal. It is passed to the impedance matching circuit 140.
  • the broadband linear power amplifying circuit includes a first-stage amplifying circuit 21, a second-stage amplifying circuit 22, a three-stage amplifying circuit 23, and a matching output circuit 24, a first-stage amplifying circuit 21, a second-stage amplifying circuit 22,
  • the three-stage amplifying circuit 23 and the matching output circuit 24 are electrically connected in order.
  • the first-stage amplifying circuit 21 includes a first input terminal 211 electrically connected to the small-signal amplifier 111, a first output terminal 213, and a first power between the first input terminal 211 and the first output terminal 213.
  • the amplifying circuit 212 has a first input terminal 211 including a first transmission line transformer and a transmission controller located between the first transmission line transformer and the small signal amplifier 111.
  • the first power amplifying circuit 212 includes two MOS tubes (Q8 and Q9), a second transmission line transformer T15, a third transmission line transformer T20, and a fourth transmission line transformer T14.
  • the transmitting controller receives the first pulse excitation signal that is initially amplified by the small signal amplifier 111 and transmits the first pulse excitation signal to the first transmission line transformer.
  • the first transmission line transformer divides the stepped amplified first pulse excitation signal into two third pulse excitation signals, two paths.
  • the three-pulse excitation signal is amplified by the first power amplifying circuit 212 to form two fourth pulse excitation signals and transmitted to the first output terminal 213.
  • the secondary amplifier circuit 22 includes a second power amplifying circuit 221 electrically connected to the first output terminal 213, a second output terminal 223, and a second power amplifier circuit 221 and a second output terminal 223.
  • the second power amplifying circuit 221 includes a second input terminal connected to the first output terminal 213, two MOS transistors (Q1 and Q2), and a fifth transmission line transformer T1.
  • the second power amplifying circuit 221 receives the two fourth pulse excitation signals transmitted from the first output terminal 213 and then amplifies and forms two second pulse excitation signals again, and the two fifth pulse excitation signals form a four-way through the second transmission transformer 222.
  • the sixth pulse excitation signal is passed to the second output 223.
  • the three-stage amplifying circuit 23 includes a third input terminal 231 electrically connected to the second output terminal 223, a third output terminal 233, and a third between the third input terminal 231 and the third output terminal 233.
  • the third power amplifying circuit 232 includes four MOS tubes, a sixth transmission line transformer T19, a seventh transmission line transformer T2, an eighth transmission line transformer T17, a ninth transmission line transformer T4, a tenth transmission line transformer T12, and an eleventh transmission line transformer T9. .
  • the third input terminal 231 receives the four sixth pulse excitation signals transmitted from the second output terminal 223 and transmits the signals to the third power amplifying circuit 232, and is amplified by the third power amplifying circuit 232 to form four fourth pulse excitation signals and transmitted.
  • the third output 233 is given.
  • the matching output circuit 24 includes a fourth input terminal 241 electrically coupled to the third output terminal 233, an output matching terminal 243, and a fourth transformer 242 between the fourth input terminal 241 and the output matching terminal 243.
  • the fourth input terminal 241 receives the fourth seventh pulse excitation signal transmitted from the third output terminal 233, and the fourth seventh pulse excitation signal forms a second pulse excitation signal through the fourth transformer 242, and the second pulse excitation signal passes through the output matching end.
  • 243 is passed to the impedance matching circuit 140.
  • the first step is to turn on the power and turn on the power
  • the second step is to initialize the programmable logic control unit
  • the third step is to detect an input signal of the button, and the button control unit detects the input signal and transmits the signal to the CPU control unit;
  • the fourth step is processed by the CPU control unit, and the CPU control unit processes and analyzes the signal, and determines the signal. If the signal is valid, it is transmitted to the programmable logic control unit, and proceeds to the fifth step; if the signal is invalid , then move to the third step;
  • the first excitation signal is generated, and after receiving the valid signal, the programmable logic control unit generates a corresponding first excitation signal; the first excitation signal corresponds to an ultrasonic wave of frequency, sound pressure, sound intensity and pulse width. And displayed on the display unit;
  • the power amplification unit receives the first excitation signal, and the signal is amplified to generate a second excitation signal;
  • the impedance matching circuit receives the second excitation signal to achieve impedance matching and tuning matching between the second excitation signal and the thrombolysis probe;
  • ultrasonic waves are generated, and the thrombolysis probe generates a corresponding ultrasonic wave by matching and tuning matching with the impedance of the second excitation signal.
  • the frequency control button and the sound pressure control button are issued, and the command is processed by the single-chip computer to form a command signal, and is transmitted to the CPU control unit 160 for analysis and processing by the CPU control unit 160.
  • the programmable logic control unit (FPGA) 120 Passed to the programmable logic control unit (FPGA) 120, the programmable logic control unit (FPGA) 120 receives the command signal of the CPU control unit 160, generates a first excitation signal, and the first excitation signal is initially amplified by the small signal controllable amplifier 111.
  • the broadband linear power amplifying circuit 112 forms a second excitation signal, and the second excitation signal is impedance matched and tuned by the impedance matching circuit 140, so that the thrombolysis probe 170 emits a frequency, sound pressure, and sound intensity.
  • Ultrasonic waves with pulse width and pulse frequency decompose the thrombus by the cavitation effect of the ultrasonic wave.
  • the programmable logic control unit (FPGA) 120 generates an LVDS signal timing (low voltage differential signal timing) corresponding to the first excitation signal, and the LVDS signal timing is used to control the display of the display unit 100 to realize human-machine interaction.
  • LVDS signal timing low voltage differential signal timing
  • Another command is issued to the frequency control button and the sound pressure control button, which is sequentially generated by the single chip microcomputer, the CPU control unit 160, and the programmable logic control unit (FPGA) 120.
  • Another first excitation signal after passing through the small signal controllable amplifier 111, the broadband linear power amplifying circuit 112, and the impedance matching circuit 140, generates another frequency, frequency, sound pressure, sound intensity, and the like in the thrombolysis probe 170. Ultrasonic waves with pulse width and pulse frequency.
  • the programmable logic control unit (FPGA) 120 generates another LVDS signal timing (low voltage differential signal timing). The LVDS signal timing controls the display of the display unit 100 to facilitate issuing corresponding commands to the control buttons and the sound pressure control buttons. .

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Abstract

一种多档位溶栓设备，包括：CPU控制单元（160），按键控制单元（150），可编程逻辑控制单元（FPGA）（120），显示单元（100），功率放大单元（110），阻抗匹配电路（140），溶栓探头（170），电流电压检测器（180）和电源单元（130）。按键控制单元（150）发出指令信号并将该指令信号传递给CPU控制单元（160）。CPU控制单元（160）对该指令信号进行分析和处理。可编程逻辑控制单元（120）接收处理和分析后的指令信号，产生第一脉冲激励信号。显示单元（100）显示超声波频率信号、声压信号和脉冲宽度信号。功率放大单元（110）对第一脉冲激励信号进行放大，并产生第二脉冲激励信号。溶栓探头（170）将第二脉冲激励信号转化为超声波。它能根据需要产生出不同频率、声压、脉冲宽度、脉冲频率的超声波，对不同患者不同程度的血栓进行高效的治疗。

Description

多档位溶栓设备及其控制方法
技术领域：
本发明涉及一种溶栓设备，尤其是一种可调节不同频率、声压和声强的多档位溶栓设备。
背景技术：
溶栓设备主要是利用超声波的空化效应将血栓分解，分解后的血栓再排出体内，达到治疗血栓的目的。现代许多实验研究表明，超声波的空化效应与超声波的频率、声压、声强等参数密切相关，不同频率、声压、声强的超声波会产生不同强度的空化效应，不同强度的空化效应对血栓的分解速度和分解程度不同。
现在市场上的溶栓设备发出的超声波的频率、声压、声强等都是固定的。针对人体不同部位不同程度的血栓，利用这种超声波频率、声压、声强固定的溶栓设备进行治疗，治疗效果不好，效率不高。
发明内容：
本发明的目的是解决现有技术不足，提供一种可调节不同频率、声压和声强的多档位溶栓设备。
本发明的技术方案为：
一种多档位溶栓设备包括:CPU控制单元，按键控制单元，可编程逻辑控制单元（FPGA），显示单元，功率放大单元，阻抗匹配电路，溶栓探头，电流电压检测器和电源单元。按键控制单元用于发出指令信号并将该指令信号传递给CPU控制单元。CPU控制单元与按键控制单元连接，用于接收来自按键控制单元的指令信号，并对该指令信号进行处理和分析，并将处理分析结果发送给可编程逻辑控制单元。可编程逻辑控制单元与CPU控制单元连接，用于接收来自CPU控制单元处理和分析后的指令信号，并产生第一脉冲激励信号。显示单元与可编程逻辑控制单元连接，用于显示溶栓过程中的声波频率信号、声压信号、声强信号和脉冲宽度信号。功率放大单元与可编程逻辑控制单元连接，用于对第一脉冲激励信号进行放大，并产生变频、变幅、变波形及间歇性发射的第二脉冲激励信号。阻抗匹配电路分别与功率放大单元和溶栓探头连接，用于实现第二脉冲激励信号与溶栓探头之间的阻抗匹配和调谐匹配。溶栓探头将所述第二脉冲激励信号转化为超声波。电流电压检测器连接在溶栓探头与CPU控制单元之间，用于检测溶栓探头的工作状态。电源单元分别与CPU控制单元、可编程逻辑控制单元、功率放大单元连接，用于为其提供电源。
一种优选方案是功率放大单元包括小信号可控放大器和宽频带线性功率放大电路，小信号可控放大器与可编程逻辑控制单元（FPGA）连接，用于对第一激励信号初步放大；宽频带线性功率放大电路与小信号可控放大器连接，对第一激励信号进一步放大，并产生变频、变幅、变波形及间歇性发射的第一激励信号。
一种优选方案是宽频带线性功率放大电路包括一级放大电路、二级放大电路、三级放大电路和匹配输出电路，一级放大电路、二级放大电路、三级放大电路和匹配输出电路依次电连接。
一种优选方案是一级放大电路包括与小信号放大器电连接的第一输入端、第一输出端和位于第一输入端与第一输出端之间的第一功率放大电路；第一输入端包括第一传输线变压器和位于第一传输线变压器与小信号放大器之间的发射控制器；发射控制器接收小信号放大器初步放大的第一脉冲激励信号后传递给第一传输线变压器，第一传输线变压器将第一脉冲激励信号分成两路第三脉冲激励信号，两路第三脉冲激励信号经第一功率放大电路放大后形成两路第四脉冲激励信号并传递给第一输出端。
一种优选方案是二级放大电路包括与第一输出端电连接的第二功率放大电路、第二输出端和位于第二功率放大电路与第二输出端之间的第二传输变压器；第二功率放大电路接收第一输出端传递过来的两路第四脉冲激励信号后再次放大形成两路第五脉冲激励信号，两路第五脉冲激励信号经第二传输变压器形成四路第六脉冲激励信号并传递给第二输出端。
一种优选方案是三级放大电路包括与第二输出端电连接的第三输入端、第三输出端和位于第三输入端与第三输出端之间的第三功率放大电路；第三输入端接收第二输出端传递过来的四路第六脉冲激励信号并传递给第三功率放大电路，经第三功率放大电路放大后形成四路第七脉冲激励信号并传递给第三输出端。
一种优选方案是匹配输出电路包括与第三输出端电连接的第四输入端、输出匹配端和位于第四输入端与输出匹配端之间的第四变压器；第四输入端接收第三输出端传递过来的四路第七脉冲激励信号，四路第七脉冲激励信号经第四变压器形成第二脉冲激励信号，第二脉冲激励信号经输出匹配端传递给阻抗匹配电路。
一种优选方案是按键控制单元包括单片机和与单片机连接的按键，按键用于发出指令，单片机将指令转化为指令信号。
本发明的另一种方案为：
一种多档位溶栓设备控制方法，包括以下步骤：
第一步，开机，接通电源；
第二步，可编程逻辑控制单元初始化；
第三步，检测按键的输入信号，按键控制单元检测到输入信号，并传递给CPU控制单元；
第四步，CPU控制单元处理，CPU控制单元接收信号后进行处理和分析，并对该信号进行判断，如果该信号有效，则传递给可编程逻辑控制单元，进入第五步；如果该信号无效，则转入第三步；
第五步，产生第一激励信号，可编程逻辑控制单元接收有效的信号后，产生一种对应的第一激励信号；第一激励信号对应一种频率、声压、声强、脉冲宽度的超声波，并在显示单元上显示；
第六步，功率放大，功率放大单元接收第一激励信号后，并对该信号进行放大产生第二激励信号；
第七步，阻抗匹配，阻抗匹配电路接收第二激励信号，实现第二激励信号与溶栓探头之间的阻抗匹配和调谐匹配；
第八步，产生超声波， 溶栓探头通过与第二激励信号的阻抗匹配和调谐匹配后产生相对应的一种超声波。
综合上述方案可知，本发明有益效果是：根据人体不同部位，不同程度的血栓，通过按键控制单元控制可编程逻辑控制单元（FPGA）产生第一激励信号，第一激励信号经过放大后产生第二激励信号，溶栓探头再将第二激励信号转换成不同频率、声压、声强、脉冲宽度、脉冲频率的超声波，对患者进行高效的治疗。
附图说明
图1为本发明的结构方框图；
图2为本发明中的宽频带线性功率放大电路框图;
图3为本发明中的一级放大电路图;
图4为本发明中的二级放大电路图;
图5为本发明中的三级放大电路图；
图6为本发明中的匹配输出电路图；
图7为本发明的控制流程图。
具体实施方式：
为阐述本发明的思想及目的，下面将结合附图和具体实施例对本发明作进一步的说明。
如图1至图7所示，一种多档位溶栓设备包括CPU控制单元160、显示单元100、按键控制单元150、电源单元130、可编程逻辑控制单元（FPGA）120、功率放大单元110、阻抗匹配电路140、溶栓探头170和电流电压检测器180。
可编程逻辑控制单元（FPGA）120分别与显示单元100、功率放大单元110、CPU控制单元160和电源单元130连接，功率放大单元110通过阻抗匹配电路140与溶栓探头170连接，CPU控制单元160分别与按键控制单元150、电源单元130和溶栓探头170连接，功率放大单元110与电源单元130连接。电流电压检测器180连接在溶栓探头170与CPU控制单元160之间，用于检测溶栓探头170的工作状态。电源单元130分别与CPU控制单元160、小信号可控放大器111、宽频带线性功率放大电路112、可编程逻辑控制单元（FPGA）120连接，并为其提供电源。
按键控制单元150包括单片机和与单片机连接的按键。其中，单片机直接与CPU控制单元160连接，按键包括频率控制按键和声压控制按键，按键发出指令经单片机转化为指令信号后传递给CPU控制单元160。CPU控制单元160接收该指令信号后对其进行处理和分析,并将处理和分析结果发送给可编程逻辑控制单元（FPGA）120。可编程逻辑控制单元（FPGA）120接收CPU控制单元160处理和分析的指令信号后，产生第一脉冲激励信号，第一脉冲激励信号经功率放大单元110的放大，产生变频、变幅、变波形及间歇性发射的第二脉冲激励信号。第二脉冲激励信号经阻抗匹配电路140的阻抗匹配和调谐匹配后传递给溶栓探头170，溶栓探头170将第二脉冲激励信号转化为一种超声波，对患者进行治疗。同时，可编程逻辑控制单元（FPGA）120产生一种与第一脉冲激励信号相对应的LVDS信号时序（低压差分信号时序），LVDS信号时序用于控制显示单元100的显示，显示出超声波的频率、声压、声强和脉冲宽度，实现人机互动。电流电压检测器180连接在溶栓探头170与CPU控制单元160之间，用于检测溶栓探头170的工作状态。电源单元130用于为CPU控制单元160、可编程逻辑控制单元（FPGA）120、功率放大单元110提供电源。
其中，功率放大单元110包括小信号可控放大器111和宽频带线性功率放大电路112。小信号可控放大器111与可编程逻辑控制单元（FPGA）120连接，用于对第一脉冲激励信号初步放大。宽频带线性功率放大电路连接在小信号放大器111与阻抗匹配电路140之间，用于对第一脉冲激励信号进一步放大，并产生变频、变幅、变波形及间歇性的第二脉冲激励信号并传递给阻抗匹配电路140。
如图2所示，其中，宽频带线性功率放大电路包括一级放大电路21、二级放大电路22、三级放大电路23和匹配输出电路24，一级放大电路21、二级放大电路22、三级放大电路23和匹配输出电路24依次电连接。
如图3所示，一级放大电路21包括与小信号放大器111电连接的第一输入端211、第一输出端213和位于第一输入端211与第一输出端213之间的第一功率放大电路212，第一输入端211包括第一传输线变压器和位于第一传输线变压器与小信号放大器111之间的发射控制器。其中，第一功率放大电路212包括了两个MOS管（Q8和Q9）、第二传输线变压器T15、第三传输线变压器T20、第四传输线变压器T14。
发射控制器接收经小信号放大器111初步放大的第一脉冲激励信号后传递给第一传输线变压器，第一传输线变压器将步放大的第一脉冲激励信号分成两路第三脉冲激励信号，两路第三脉冲激励信号经第一功率放大电路212放大后形成两路第四脉冲激励信号并传递给第一输出端213。
如图4所示，二级放大电路22包括与第一输出端213电连接的第二功率放大电路221、第二输出端223和位于第二功率放大电路221与第二输出端223之间的第二传输变压器222。其中，第二功率放大电路221包括与第一输出端213连接的第二输入端、两个MOS管（Q1和Q2）和第五传输线变压器T1。
第二功率放大电路221接收第一输出端213传递过来的两路第四脉冲激励信号后再次放大形成两路第五脉冲激励信号，两路第五脉冲激励信号经第二传输变压器222形成四路第六脉冲激励信号并传递给第二输出端223。
如图5所示，三级放大电路23包括与第二输出端223电连接的第三输入端231、第三输出端233和位于第三输入端231与第三输出端233之间的第三功率放大电路232。其中，第三功率放大电路232包括四个MOS管、第六传输线变压器T19、第七传输线变压器T2、第八传输线变压器T17、第九传输线变压器T4、第十传输线变压器T12和第十一传输线变压器T9。
第三输入端231接收第二输出端223传递过来的四路第六脉冲激励信号并传递给第三功率放大电路232，经第三功率放大电路232放大后形成四路第七脉冲激励信号并传递给第三输出端233。
如图6所示，匹配输出电路24包括与第三输出端233电连接的第四输入端241、输出匹配端243和位于第四输入端241与输出匹配端243之间的第四变压器242。第四输入端241接收第三输出端233传递过来的四路第七脉冲激励信号，四路第七脉冲激励信号经第四变压器242形成第二脉冲激励信号，第二脉冲激励信号经输出匹配端243传递给阻抗匹配电路140。
如图7所示，下面介绍本发明的多档位溶栓设备控制方法的步骤：
第一步，开机，接通电源；
第二步，可编程逻辑控制单元初始化；
第三步，检测按键的输入信号，按键控制单元检测到输入信号，并传递给CPU控制单元；
第四步，CPU控制单元处理，CPU控制单元接收信号后进行处理和分析，并对该信号进行判断，如果该信号有效，则传递给可编程逻辑控制单元，进入第五步；如果该信号无效，则转入第三步；
第五步，产生第一激励信号，可编程逻辑控制单元接收有效的信号后，产生一种对应的第一激励信号；第一激励信号对应一种频率、声压、声强、脉冲宽度的超声波，并在显示单元上显示；
第六步，功率放大，功率放大单元接收第一激励信号后，并对该信号进行放大产生第二激励信号；
第七步，阻抗匹配，阻抗匹配电路接收第二激励信号，实现第二激励信号与溶栓探头之间的阻抗匹配和调谐匹配；
第八步，产生超声波， 溶栓探头通过与第二激励信号的阻抗匹配和调谐匹配后产生相对应的一种超声波。
在使用时，根据人体不同部位不同程度的血栓，向频率控制按键和声压控制按键发出指令，指令经单片机分析处理后形成指令信号，并传递至CPU控制单元160，经CPU控制单元160分析处理传递至可编程逻辑控制单元（FPGA）120，可编程逻辑控制单元（FPGA）120接收CPU控制单元160的指令信号后，产生第一激励信号，第一激励信号经小信号可控放大器111初步放大和宽频带线性功率放大电路112的进一步放大，形成第二激励信号，第二激励信号经阻抗匹配电路140的阻抗匹配和调谐匹配，使得溶栓探头170发射出一种频率、声压、声强、脉冲宽度、脉冲频率的超声波，通过超声波的空化效应对血栓进行分解。同时，可编程逻辑控制单元（FPGA）120产生一种与第一激励信号相对应的LVDS信号时序（低压差分信号时序），LVDS信号时序用于控制显示单元100的显示，实现人机互动。
当需要治疗别的患者或者不同程度的血栓时，向频率控制按键和声压控制按键发出另一个指令，这个指令依次经单片机、CPU控制单元160、可编程逻辑控制单元（FPGA）120后，产生另一种第一激励信号，再经小信号可控放大器111、宽频带线性功率放大电路112、阻抗匹配电路140后，在溶栓探头170产生另一种频率、频率、声压、声强、脉冲宽度、脉冲频率的超声波。同时，可编程逻辑控制单元（FPGA）120产生另一种LVDS信号时序（低压差分信号时序），这种LVDS信号时序控制显示单元100的显示，便于向控制按键和声压控制按键发出相应的指令。
以上是对发明所提供的多档位溶栓设备及其控制方法进行了详细的介绍，本文中应用了具体个例对本发明的结构原理及实施方式进行了阐述，以上实施例只是用于帮助理解本发明的方法及其核心思想；同时，对于本领域的一般技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，综上，本说明书内容不应理解为对本发明的限制。

Claims (9)

  1. 一种多档位溶栓设备，其特征在于，包括:
    按键控制单元，用于发出指令信号并将该指令信号传递给CPU控制单元；
    CPU控制单元，与按键控制单元连接，用于接收来自按键控制单元的指令信号，并对该指令信号进行处理和分析，并将处理分析结果发送给可编程逻辑控制单元；
    可编程逻辑控制单元，与CPU控制单元连接，用于接收来自CPU控制单元处理和分析后的指令信号，并产生第一脉冲激励信号；
    显示单元，与可编程逻辑控制单元连接，用于显示溶栓过程中的声波频率信号、声压信号、声强信号和脉冲宽度信号；
    功率放大单元，与可编程逻辑控制单元连接，用于对第一脉冲激励信号进行放大，并产生变频、变幅、变波形及间歇性发射的第二脉冲激励信号；
    阻抗匹配电路，阻抗匹配电路分别与功率放大单元和溶栓探头连接，用于实现第二脉冲激励信号与溶栓探头之间的阻抗匹配和调谐匹配；
    溶栓探头，所述溶栓探头将所述第二脉冲激励信号转化为超声波；
    电流电压检测器，所述电流电压检测器连接在溶栓探头与CPU控制单元之间，用于检测溶栓探头的工作状态;
    电源单元，所述电源单元分别与CPU控制单元、可编程逻辑控制单元、功率放大单元连接，用于为其提供电源。
  2. 如权利要求1所述的多档位溶栓设备，其特征在于，所述功率放大单元包括小信号放大器和宽频带线性功率放大电路，所述小信号放大器与可编程逻辑控制单元电连接，用于对所述第一脉冲激励信号初步放大；所述宽频带线性功率放大电路与小信号放大器电连接，对第一脉冲激励信号进一步放大，并产生变频、变幅、变波形及间歇性的第二脉冲激励信号。
  3. 如权利要求2所述的多档位溶栓设备，其特征在于，所述宽频带线性功率放大电路包括一级放大电路、二级放大电路、三级放大电路和匹配输出电路，所述一级放大电路、二级放大电路、三级放大电路和匹配输出电路依次电连接。
  4. 如权利要求3所述的多档位溶栓设备，其特征在于，所述一级放大电路包括与小信号放大器电连接的第一输入端、第一输出端和位于第一输入端与第一输出端之间的第一功率放大电路；所述第一输入端包括第一传输线变压器和位于第一传输线变压器与小信号放大器之间的发射控制器；所述发射控制器接收经小信号放大器初步放大的第一脉冲激励信号后传递给第一传输线变压器，第一传输线变压器将初步放大的第一脉冲激励信号分成两路第三脉冲激励信号，两路第三脉冲激励信号经第一功率放大电路放大后形成两路第四脉冲激励信号并传递给第一输出端。
  5. 如权利要求4所述的多档位溶栓设备，其特征在于，所述二级放大电路包括与第一输出端电连接的第二功率放大电路、第二输出端和位于第二功率放大电路与第二输出端之间的第二传输变压器；所述第二功率放大电路接收第一输出端传递过来的两路第四脉冲激励信号后再次放大形成两路第五脉冲激励信号，两路第五脉冲激励信号经第二传输变压器形成四路第六脉冲激励信号并传递给第二输出端。
  6. 如权利要求5所述的多档位溶栓设备，其特征在于，所述三级放大电路包括与第二输出端电连接的第三输入端、第三输出端和位于第三输入端与第三输出端之间的第三功率放大电路；所述第三输入端接收第二输出端传递过来的四路第六脉冲激励信号并传递给第三功率放大电路，经第三功率放大电路放大后形成四路第七脉冲激励信号并传递给第三输出端。
  7. 如权利要求6所述的多档位溶栓设备，其特征在于，所述匹配输出电路包括与第三输出端电连接的第四输入端、输出匹配端和位于第四输入端与输出匹配端之间的第四变压器；所述第四输入端接收第三输出端传递过来的四路第七脉冲激励信号，四路第七脉冲激励信号经第四变压器形成所述第二脉冲激励信号，第二脉冲激励信号经输出匹配端传递给所述阻抗匹配电路。
  8. 如权利要求1所述的多档位溶栓设备，其特征在于，所述按键控制单元包括单片机和与单片机连接的按键，所述按键用于发出指令，所述单片机将所述指令转化为指令信号。
  9. 一种多档位溶栓设备控制方法，其特征在于，包括以下步骤： 第一步，开机，接通电源；
    第二步，可编程逻辑控制单元初始化；
    第三步，检测按键的输入信号，按键控制单元检测到输入信号， 并传递给CPU控制单元；
    第四步，CPU控制单元处理，CPU控制单元接收信号后进行处理和分析，并对该信号进行判断，如果该信号有效，则传递给可编程逻辑控制单元，进入第五步；如果该信号无效，则转入第三步；
    第五步，产生第一激励信号，可编程逻辑控制单元接收有效的信号后，产生一种对应的第一激励信号；第一激励信号对应一种频率、声压、声强和脉冲宽度的超声波，并在显示单元上显示；
    第六步，功率放大，功率放大单元接收第一激励信号后，并对该信号进行放大产生第二激励信号；
    第七步，阻抗匹配，阻抗匹配电路接收第二激励信号，实现第二激励信号与溶栓探头之间的阻抗匹配和调谐匹配；
    第八步，产生超声波， 溶栓探头通过与第二激励信号的阻抗匹配和调谐匹配后产生相对应的一种超声波。
PCT/CN2014/079255 2014-05-13 2014-06-05 多档位溶栓设备及其控制方法 WO2015172415A1 (zh)

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