High intensity focused ultrasound therapy

    HIFU piezo ceramic technology as a new clinical treatment method, mainly including extracorporeal shock wave lithotripsy (ESWL)therapy, HIFU tumor treatment and extracorporeal shock wave lithotripsy (ESWL) treatment technology.

     Extracorporeal shock wave lithotripsy is the use of ultrasound or lower-intensity shock waves emitted from outside the human body.Through the water body into the human body, the focusing piezo is focused and spread, and the high-intensity shock wave formed by the focus is broken and located in the focal point.The stone in the human body at the point, the broken stone fragments, and the method of excretion with the urine flow.Together with CT and nuclear magnetic resonance, it is known as the three new medical technologies in the 20th century. This technology has completely changed.The treatment of high intensity focused ultrasound relies mainly on the traditional method of open surgery and is a revolution in the treatment of calculus.So far, extracorporeal shock wave lithotripsy has become the treatment of choice for the treatment of urinary stones .

The study of the therapy started in the 1950s. Lamport and Ne~an reported in 1950.Continuous ultrasonic non-contact comminution of calculi in human body, but since it has not been used for a long time.New breakthroughs of piezoelectric crystal transducer have brought research into this technology . Soviet scientist Jutkin in the 1950s.It was found in the experiment that the piezo ceramics wave can be destroyed by the shock wave generated between the two electrodes ultrasonic high focusing piezo is used in the discharge water, and thereafter American urologists use this principle to smash a male patient with a shock wave through a mirror .The skin of the person's skin is the body's liquid-electric shock wave was first obtained in the former Soviet Union in the 1960s,schmieds and Eisenberger followed the idea of breaking the skin of the former Soviet Union shock wave started research on the basics of medical HIFU ultrasound piezo ceramic, using spark discharge devices in the water tank to generate shock waves.

Focusing transducer is achieved by means of the inner surface reflection of the metal ellipsoid, thus laying a liquid-electric shock wave and an ellipsoid focusing.The engineering technology foundation has been developed and used up to now. After that, Professor Chaussy, a German urologist, presided over EsWL.Animal experiments and clinical studies, Chaussy and colleagues in 1978.Based on a large number of researches, an extracorporeal shock wave high focus ultrasound piezo with a sink type and two sets of orthogonal x-ray positioning systems was designed in 1980 .which  introduced HM-I extracorporeal shock wave lithotripsy using Chaussy's structural design in February of the same year, Dr. Sauerbruch first used clinical extracorporeal shock waves to treat patients with kidney stones.And in May 1981 officially announced the "successful use of in vitro water focused shock wave is crushing kidney knot by clinical research report of stone in 1984. The company launched a more complete HM commercialization.The crusher has been widely used in Europe, the United States and other countries, and ESWL has developed rapidly since then.