Acoustical stethoscope with electrical filter
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United States of America Patent
Stats
-
Apr 11, 1989
Grant Date -
N/A
app pub date -
Jun 9, 1987
filing date -
Oct 11, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The stethoscope comprises a membrane (2) sensor (1) connected by a tube (3) to ear-pieces (8 & 9). The tube (3) traverses a casing (10) containing an electrical unit connected by a cable (12) to an electrical sensor (11). The electrical unit is sensitive to a given frequency range and comprises an electro-acoustic emitter (19) supplying acoustic signals into conduit (3) which are obtained in response to signals coming from the sensor (11) according to a predetermined scheme.
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