Expert system on basis of ultrasonic physiotherapeutic apparatus

The technology of an expert system and a physiotherapy apparatus is applied in the field of intelligent ultrasonic physiotherapy apparatus, which can solve the problems of single treatment frequency, complicated operation, and single treatment head, etc., and achieve the effects of high output sound power, improving equipment efficiency, and improving treatment effect.

Active Publication Date: 2014-12-17
SUZHOU INST OF BIOMEDICAL ENG & TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The treatment area of ​​single frequency is limited, and when the patient needs to treat multiple areas, additional equipment is needed to complete the treatment.
During the treatment process, due to differences in temperature and environment, the resonance frequency of the ultrasonic therapy head changes. Since the current ultrasonic physiotherapy equipment does not have the function of automatic frequency tracking, frequency imbalance will occur, which will cause impedance mismatch and reduce efficiency. , seriously does not work properly
[0006] Most of the existing ultrasonic physiotherapy instruments are complicated to operate and do not have the function of expert treatment. The treatment frequency is mostly single and fixed at 1MHz or 3MHz, the output sound power is within 2W / cm2, and the effective area of ​​the treatment head is relatively small with a single treatment head.
Occasionally, a physiotherapy instrument with dual frequency and dual treatment heads has a large difference in the effective treatment area of ​​the 1MHz and 3MHz treatment heads, the output sound power is small, and there is no automatic frequency tracking function.

Method used

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  • Expert system on basis of ultrasonic physiotherapeutic apparatus
  • Expert system on basis of ultrasonic physiotherapeutic apparatus
  • Expert system on basis of ultrasonic physiotherapeutic apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] see figure 1 As shown, an intelligent dual-frequency ultrasonic physiotherapy instrument includes a power supply module 1, a human-computer interaction module 2, a main control module 3, a DDS module 4, a power amplifier module 5, a treatment head module 6, a frequency tracking module 7 and a temperature control module 8 . The power supply module 1 includes a 220V AC to DC 15V power supply module 101, and the 220V AC to DC 15V power supply module 101 is connected with a level conversion module 102; the 220V AC to DC 15V power supply module 101 converts AC 220V to DC 15V To provide power to the push-pull power amplifier circuit 503; the level conversion module 102 converts the DC 15V voltage into various voltages required by the main control module 3 and the human-computer interaction module 2.

[0038] The human-computer interaction module 2 includes a touch screen 201 and a status display light 202; through the touch screen 201, various treatment parameters can be se...

Embodiment 2

[0053] See attached image 3 , The microprocessor controls the DDS integrated chip to generate ultrasonic excitation signals. The DDS integrated chip adopts AD9851 of AD Company, and the output frequency is up to 180MHz. It can generate output signals such as sine wave, square wave and triangle wave, etc., with low power consumption. The microprocessor is connected through the serial bus, and the 50MHz active crystal oscillator is used as the reference clock. The output sine wave excitation signal passes through the low-pass filter circuit composed of R, L, and C; the signal after filtering out the harmonic interference enters the duty cycle adjustment Circuit; the duty cycle adjustment circuit is composed of high-speed analog switches, and the microprocessor realizes the control of the duty cycle of the excitation signal by adjusting the duty cycle of the input B-terminal signal: when the B-terminal is high, fout=fin; when the B-terminal is low Usually, fout=GND(0V), within a...

Embodiment 3

[0055] See attached Figure 4 , in the power amplifier module, U4 forms a first-stage amplifier circuit, and the excitation signal is input from the same-phase terminal to form the same-phase proportional amplifier circuit. The magnification factor is determined by the ratio of the output resistance of the digital potentiometer to R3. The size of the resistance value, so as to control the size of the output voltage, and further realize the control of the output power; the output power of U4 is about 1W; C5 is a coupling capacitor; Q3 constitutes a secondary amplifier circuit, and R4 and R5 constitute a bias after voltage division circuit, R6 and C6 are used for feedback compensation. After Q3 is amplified, the output power reaches about 5W, which is coupled to the push-pull power amplifier circuit through transformer T1; V_set1 and V_set2 are used to set the quiescent working current of Q1 and Q2. Adjustment, Q1 and Q2 are power MOS tubes, T2 is an output transformer, and L4 i...

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Abstract

The invention discloses an expert system on the basis of an ultrasonic physiotherapeutic apparatus. The expert system comprises an ultrasonic therapeutic apparatus and an expert control module. The ultrasonic therapeutic apparatus comprises a power supply module, a human-computer interaction module, a master control module, a DDS (direct digital synthesizer) module, a power amplifier module, a therapeutic head module and a frequency tracking module. Each ultrasonic therapeutic head of each therapeutic head comprises 2-5 ultrasonic transmitting heads which are combined with one another, and each transmitting head is independently controlled by the master control module. The expert control module comprises preset expert medication which can be called via the human-computer interaction module, and different frequency or frequency combination, power and therapeutic time parameters can be preset in the expert medication according to different diseases. The therapeutic head module is provided with the multiple therapeutic heads and absorption structures, and absorption components of the therapeutic heads are approximately conical absorption covers. Output frequencies and output power of each ultrasonic transmitting head can be set differently by the expert medication, so that acting depth and section of each ultrasonic transmitting head around a central therapeutic position of a patient and the size of the section of the ultrasonic transmitting head around the central therapeutic position of the patient can be optimized.

Description

technical field [0001] The invention relates to an intelligent ultrasonic physiotherapy instrument, in particular to a high-tech ultrasonic physiotherapy instrument for in vitro physical therapy of patients with organic cardiovascular disease and sports trauma. Background technique [0002] The action of ultrasonic waves on human tissues will produce certain biological effects, such as mechanical effects, thermal effects, cavitation effects, etc., which can be used to achieve certain therapeutic purposes, which is the so-called ultrasonic physiotherapy. [0003] The attenuation value of ultrasound in biological tissue increases almost linearly with frequency, that is, the higher the frequency, the larger the attenuation coefficient and the faster the attenuation. Different ultrasound frequencies will cause the ultrasound signal to enter the human body at different depths; on the other hand, excessive Ultrasonic radiation can cause harm to the human body, and different doses ...

Claims

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Application Information

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IPC IPC(8): A61N7/00
Inventor 郑陈琪杨杰顾华东陈瑞涛
Owner SUZHOU INST OF BIOMEDICAL ENG & TECH CHINESE ACADEMY OF SCI
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