Interference resistant biomedical transducer
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United States of America Patent
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-
Nov 15, 1988
Grant Date -
N/A
app pub date -
Nov 13, 1986
filing date -
Nov 13, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An interference resistant biomedical transducer for monitoring the acoustic output of a patient's cardiac or respiratory system which provides a high degree of rejection of acoustic noise and spurious electromagnetic signals. The transducer comprises a piezoelectric diaphragm assembly having electrodes which produce a differential output signal. The transducer housing includes a massive metal disc and a compliant handle which provide a mechanical filter to remove undesired signals such as those related to motion of the patient and ambient acoustic noise.
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