Electrical audio signal processing systems and devices – Stethoscopes – electrical
Patent
1992-12-16
1994-11-22
Isen, Forester W.
Electrical audio signal processing systems and devices
Stethoscopes, electrical
429 96, 429100, A61B 704
Patent
active
053675754
ABSTRACT:
An electronic stethoscope which is adapted to receive auscultatory sounds from a body, is adapted to transmit the auscultatory sounds to a user, or other medical device which is adapted to be powered by a battery. The stethoscope has a chestpiece adapted to utilized in cooperation with the body, an acoustical transducer cooperating with the chestpiece for receiving the auscultatory sounds and transforming the auscultatory sounds into an electrical input signal. The stethoscope or medical device has an electronic processor for processing the electrical signal. The stethoscope has a speaker for converting the electrical output signal into an acoustical output signal and an earpiece receiving the acoustical output signal and providing the acoustical output signal to the user. The chestpiece (or housing of the medical device) has a cavity adapted to contain the battery. A battery carriage is insertable into the cavity of the chestpiece and is adapted to receive the battery before the battery carriage is inserted into the cavity of the chestpiece or housing. The battery carriage provides electrical continuity from the positive terminal of the battery to power supply circuitry when the battery carriage is inserted into the cavity of the chestpiece or housing. The battery carriage receives the battery in only one orientation with the positive terminal of the battery coupled to the positive electrical connection.
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Dieken Alan P.
Drake Gerald E.
Bauer William D.
Griswold Gary L.
Isen Forester W.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
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