Stethoscope with diaphragm head adapter

Details Stethoscope with diaphragm head adapter Stethoscope with diaphragm head adapter

1989-12-21

1991-02-26

Fuller, Benjamin R.

Acoustics

Anatomic or prosthetic relation

Ear and mouth

181132, 181137, A61B 702

Patent

active

049954733

ABSTRACT:
A stethoscope head adapter for a diaphragm microphone is provided. The adapter creates a smaller surface area for the diaphragm microphone without diminishing the acoustical reception by the diaphragm of normal or pathological conditions in a patient. The adapter is made from an elastomeric material to permit easy placement on the stethoscope head and to provide an effective acoustical seal against the uneven surface of the skin of a patient. A secondary diaphragm may also be provided in the adapter to focus the reception by the diaphragm microphone of the specific frequencies desired to be monitored. With the adapter on the stethoscope head, the intensities of sound at frequencies not desired to be monitored are attenuated when compared with the use of the stethoscope head without the adapter present.

REFERENCES:
patent: 2513985 (1950-07-01), Woodruff et al.
patent: 2529562 (1950-12-01), Martin
patent: 3223195 (1965-12-01), Allen
patent: 3366198 (1968-01-01), Littmann
patent: 3601218 (1971-08-01), Reynolds, Jr.
patent: 4200169 (1980-04-01), MacDonald, III et al.
patent: 4440258 (1984-04-01), Packard
patent: 4475619 (1984-10-01), Packard
patent: 4502562 (1985-03-01), Nelson

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