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超声用于治疗已超过40余年,治疗许多疾病如溃疡、运动损伤、产伤、带状疱疹、椎间盘脱出等。既使用了超声波的热效应,也使用了其他的生物物理效应。本文集中讲述其生理作用、临床效用和安全使用问题.一、基础与生理效应(一)基础超声是需要弹性介质传播的机械波,取正弦波动形式,因而也具有波长、频率(>20KHz)、幅度和速度等参数。超声治疗机含有两大部分:一是电子线路,二是换能器(超声头)。换能器件是具有压电特性的物质,将电能转换为机械能,许多超声治疗机
Ultrasound has been used for more than 40 years to treat many diseases such as ulcers, sports injuries, birth trauma, shingles, disc herniation and so on. Other than the use of the thermal effects of ultrasound, other biophysical effects are used. First, the basic and physiological effects (A) of the basic Ultrasound is the need for elastic media to spread the mechanical wave, take the form of sinusoidal fluctuations, which also has a wavelength, frequency (> 20KHz), amplitude And speed and other parameters. Ultrasound treatment machine contains two parts: one is the electronic circuit, the second is the transducer (ultrasound head). Transducer is a material with piezoelectric properties, the electrical energy is converted to mechanical energy, many ultrasonic therapy machine