Stethoscope chestpiece

Details Stethoscope chestpiece Stethoscope chestpiece

1979-08-09

1980-12-16

Gellner, Michael L.

Acoustics

Anatomic or prosthetic relation

Ear and mouth

181137, A61B 702

Patent

active

042390893

ABSTRACT:
A two-microphone stethoscope chestpiece is dislcosed wherein the locking mechanism for securing the shaft within the body of the chestpiece against axial movement and the indexing mechanism for aligning the shaft with the selected microphone are combined into a single spring having a C-shaped portion and a leg extending axially from one end thereof. The spring is positioned partially within grooves in the shaft and partially within corresponding slots in chestpiece body. Upon rotation of the shaft, the leg portion of the spring clicks into one of two opposed slots in the chestpiece body and secures the shaft in proper alignment with the selected microphone.

REFERENCES:
patent: 3152659 (1964-10-01), Littmann
patent: 3224526 (1965-12-01), Weber
patent: 3515239 (1970-06-01), Machlup et al.

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