| 摘要 |
There is disclosed an ultrasonic shockwave transducer for use in lithotripsy, hypothermia and like treatments for generating ultrasonic shock waves and transmitting them to a concretion or tissue to be destroyed. The transducer is arranged to focus the energy of the ultrasonic shock waves proportionally onto at least two points disposed on a line disposed about the main axis of, and being spaced from the radiation surface of, the transducer, the line being arbitrarily curved in three dimensions.
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