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Ultrasound can act on people to achieve the purpose of treatment. With the development of science and technology, its scope of use is becoming more and more extensive, greatly exceeding some conventional therapies. Ultrasonic treatment of diseases is a kind of natural therapy. It has been used in clinical medicine for 50 to 60 years. Major hospitals across the country have accumulated quite rich clinical experience. The therapeutic effect is recognized all over the world, without harm and side effects to human body.

Ultrasonic therapeutic instrument refers to an instrument that can treat a certain disease by applying ultrasonic energy to the diseased part of the human body, entering the deep tissue of the human musculoskeletal tissue, reaching the depth of the lesion, according to the efficacy of ultrasound that can produce warmth, physics, chemistry and vibration in the human body, and its characteristics of strong directivity, energy concentration and strong penetration.

The principle of ultrasonic therapeutic instrument is based on the following three

1. mechanical effect: ultrasonic vibration can cause material movement in tissues and cells. Due to the fine massage of ultrasound, the cytoplasm flows, cells vibrate, rotate and rub; Cell massage can change the permeability of cell membrane, stimulate the diffusion process of cell semi permeable membrane, promote metabolism, accelerate blood and lymph circulation, improve cell ischemia and blood oxygen status, improve tissue nutrition, change protein synthesis rate, change the internal structure of cells, lead to changes in cell function, improve regeneration skills, make hard connective tissue look at the eyes, soften the tissue, and enhance penetration, This is the unique characteristic of ultrasonic treatment, so it has a unique "conditioning effect".

2. thermophilic effect: human tissue has a relatively large ability to absorb ultrasonic energy. When ultrasonic propagates in human tissue, its energy is continuously absorbed by the tissue and becomes heat. The result is the temperature height of tissue cells.

Heat generation process is an energy conversion process in which mechanical energy becomes heat energy in a medium. Namely "endogenous heat". Ultrasound thermotherapy can increase blood circulation, accelerate metabolism, improve local tissue nutrition and enhance enzyme activity. In general, the warming effect of ultrasound is particularly significant on bone and connective tissue.

3. physical and chemical effects, mechanical effects and thermal effects of ultrasound can also promote a number of physical and chemical changes, resulting in the following five effects: dispersion, thixotropic, depolymerization, anti-inflammatory and cell repair.