Lithotripsy system using ultrasound to locate calculi
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United States of America Patent
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Nov 26, 1991
Issued Date -
N/A
app pub date -
Jul 11, 1990
filing date -
May 24, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A calculi locator is provided having at least one ultrasound transducers in combination with a shock wave generator. The ultrasound transducer is rotatable about the longitudinal axis of a reflector of the shock wave generator. The shock wave generator includes a target focal point. The transducer is used to assure positional coincidence of the true location of the calculi and of the target focal point. Alternatively, either a mathematical correction unit is used or iterative measurements are used to correct for refraction errors in the location of the imaged calculi.
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