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  • External shock-wave therapy (ESWT) systems designed to produce shock waves from piezoelectric generators. These systems typically consist of several thousand piezoelectric (ceramic) elements usually ordered in an arrangement similar to a mosaic that are placed in a water-filled tank which are excited by a high-voltage pulse generator. Ultrasonic vibrations, resulting in shock waves, are created by alternating stress/strain changes in the material. Piezoelectric ESWT systems are intended to produce mechanical and biological effects on tissues. Both dedicated systems are intended to produce mechanical and biologic effects for orthopedic use. Systems that provide strong mechanical effects (i.e., lithotripters) for the destruction of renal and/or gallbladder stones are available.
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