I don't know exactly what it's for(other than I'm assuming amplification of breath sounds???
it's an earpiece that is specially molded to fit your ear like a hearing aide. it's attached to a piece of rubber tubing that connects to a stethescope bell that connects to the patients chest with 2 way tape. or it attaches to an esophogeal stethescope, (like an ng tube) and you can listen to heart tones and breaths sounds continuously throughout the case.
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