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Bos Medicare Surgical Spare diaphragm & soft ear tips provided absolutely free of cost Reliable & High Acoustic Sensitivity offer an advantage to Health Care Professionals when listening to Heart, Lung and Blood Pressure Soundsstethoscope, medical instrument used in listening to sounds produced within the body, chiefly in the heart or lungs. It was invented by the French physician R.T.H. Laënnec, who in 1819 described the use of a perforated wooden cylinder to transmit sounds from the patient’s chest (Greek: stēthos) to the physician’s ear.
