IT1172345B - Differential stethoscope distinguishing pulse from body noise - Google Patents

Differential stethoscope distinguishing pulse from body noise

Info

Publication number
IT1172345B
IT1172345B IT49160/83A IT4916083A IT1172345B IT 1172345 B IT1172345 B IT 1172345B IT 49160/83 A IT49160/83 A IT 49160/83A IT 4916083 A IT4916083 A IT 4916083A IT 1172345 B IT1172345 B IT 1172345B
Authority
IT
Italy
Prior art keywords
signals
output
noise
differential amplifier
heads
Prior art date
Application number
IT49160/83A
Other languages
Italian (it)
Other versions
IT8349160A0 (en
Inventor
Martin J Slavin
Original Assignee
Intech Systems Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Intech Systems Corp filed Critical Intech Systems Corp
Priority to IT49160/83A priority Critical patent/IT1172345B/en
Publication of IT8349160A0 publication Critical patent/IT8349160A0/en
Application granted granted Critical
Publication of IT1172345B publication Critical patent/IT1172345B/en

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  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)

Abstract

An electronic unit receives electrical signals from microphone elements (16,18) in respective acoustic heads and directs chosen acoustic signals via a tube to the earpieces (20). The two heads are imposed on widely sepd. parts of the body under examination, and their microphone outputs are applied to individual operational amplifiers (26,28) which are followed by gain adjustment potentiometers (36,40) and a differential amplifier (32). The component of the output difference signal representing body noise (e.g. respiration) is minimised by adjustment of the potentiometers (36,40), and the distinguishable difference between the two heartbeat signals is amplified (42) for driving an earphone or loudspeaker (44). The differential amplifier (32) is adjusted for min. output noise by means of a balancing potentiometer (46). The signals may be displayed on an oscilloscope connected to output jacks (48-50).
IT49160/83A 1983-10-14 1983-10-14 Differential stethoscope distinguishing pulse from body noise IT1172345B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT49160/83A IT1172345B (en) 1983-10-14 1983-10-14 Differential stethoscope distinguishing pulse from body noise

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT49160/83A IT1172345B (en) 1983-10-14 1983-10-14 Differential stethoscope distinguishing pulse from body noise

Publications (2)

Publication Number Publication Date
IT8349160A0 IT8349160A0 (en) 1983-10-14
IT1172345B true IT1172345B (en) 1987-06-18

Family

ID=11269816

Family Applications (1)

Application Number Title Priority Date Filing Date
IT49160/83A IT1172345B (en) 1983-10-14 1983-10-14 Differential stethoscope distinguishing pulse from body noise

Country Status (1)

Country Link
IT (1) IT1172345B (en)

Also Published As

Publication number Publication date
IT8349160A0 (en) 1983-10-14

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