Ultrasonic probe suitable for acoustic coupling via a water channel
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United States of America Patent
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Feb 27, 1996
Grant Date -
N/A
app pub date -
Apr 15, 1994
filing date -
Aug 16, 1991
priority date (Note) -
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Abstract
An ultrasonic probe suitable for acoustic-coupling via a water channel, includes a main element with a housing. Housed in watertight fashion in the housing is an ultrasonic oscillator, the oscillator being joined to a protective layer which is flush with the lower surface of the housing. The housing wall encloses a water channel which is connected at the input end to a hose connector and whose output end opens out in the lower surface next to the oscillator. The side wall of the housing immediately next to the lower surface has a physically interlocking coupling element for a nozzle with a matching physically interlocking coupling element to be fitted over the lower surface. The nozzle forms a truncated-conical channel which tapers towards its open end and which fits against the surface of the oscillator at the input end. The nozzle also has a blind-end bore, which forms an extension of the output end of the water channel, and a cross-channel between the blind-end bore and the channel in the nozzle. The nozzle is made of a material whose acoustic impedance is as close as possible to that of water.
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