Phonostethoscope conversion unit for amplification and clarifica

Details Phonostethoscope conversion unit for amplification and clarifica Phonostethoscope conversion unit for amplification and clarifica

1975-08-15

1977-09-13

Claffy, Kathleen H.

H04R 146, A61B 704

Patent

active

040484440

ABSTRACT:
A phonostethoscope conversion unit for use with conventional stethoscopes in order to amplify and clarify critical body sounds by interposing a pair of detachable electronic conversion units at the earpiece locations to optionally provide improved operational characteristics. The electronic units are located at the terminal end of the vibrating air column so as to provide an amplified version of the sounds of interest in a manner which the user has been attuned by experience to expect from his instrument, and further to minimize the impact of the units during stethoscope usage when the electronic assist capability is not in use.

REFERENCES:
patent: 3247324 (1966-04-01), Cefaly et al.
patent: 3396241 (1968-08-01), Anderson et al.
patent: 3493695 (1970-02-01), Stork
patent: 3846585 (1974-11-01), Slosberg
patent: 3894196 (1975-07-01), Briskey

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