Sea-shell stethoscope head

Details Sea-shell stethoscope head Sea-shell stethoscope head

1994-01-24

1995-05-30

Blankenship, Howard B.

Acoustics

Anatomic or prosthetic relation

Ear and mouth

A61B 702

Patent

active

054203821

ABSTRACT:
The invention is an improved stethoscope head having a conical shell-like head for improved acoustic detection and transmission. In its preferred embodiment, a stethoscope head may be constructed from a sea shell having a relatively broad, generally circular aperture defining a sound chamber opening, said chamber having a naturally polished, sound reflecting, interior surface. The interior surface defines a conical acoustic chamber having a generally helical axis resulting in a deep, yet compact chamber which increases the effective sound power radiated along the axis as acoustic waves propagate thereby functioning as an acoustic transformer and enhancing the fidelity of the received signal while masking unwanted sounds produced by the anatomy.

REFERENCES:
patent: 977503 (1910-12-01), Baylis
patent: 1321266 (1919-11-01), Wilkinson
patent: 2515471 (1950-07-01), Ratzan
patent: 3493075 (1970-02-01), Mendelson et al.

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