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Smart ultrasonic physical therapy instrument

A physical therapy instrument and ultrasonic technology, applied in the field of intelligent ultrasonic physical therapy instrument, can solve the problems of single treatment frequency, low efficiency, complicated operation, etc., and achieve the effect of improving treatment effect, convenient use, and improving equipment efficiency

Active Publication Date: 2014-08-13
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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 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 ;

[0043] 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.

[0044] 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 ...

Embodiment 2

[0058] See attached figure 2 , 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 ratio adjustment Circuit; the duty ratio adjustment circuit is composed of high-speed analog switches, and the microprocessor realizes the control of the duty ratio of the excitation signal by adjusting the duty ratio 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 ...

Embodiment 3

[0060] See attached image 3 , 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 amplification 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 is...

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Abstract

The invention discloses a smart ultrasonic physical therapy instrument which is composed of a power module, a master control module, a DDS module, an amplification module, a frequency tracking module, a man-machine interaction module, a therapy head module and a temperature control module. The smart ultrasonic physical therapy instrument further has a professor therapy prescription function, has the advantages of being simple in structure, capable of automatically tracking frequency, high in stability, multiple in frequency, high in output power, easy to operate, and the like, and can be widely applied to external physical therapy for patients with organic cardiovascular diseases and patients with sport injuries.

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): A61N7/02
Inventor 陈瑞涛顾华东郑陈琪杨杰
Owner SUZHOU INST OF BIOMEDICAL ENG & TECH CHINESE ACADEMY OF SCI
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