Laennec invented the stethoscope. Agreeing that the sound is transmitted on some materials, made a kind of trumpet with paper and supported in the patient's chest. After this test, began to investigate different materials to augment the apparatus.
This invention was a breakthrough in medicine, and very helpful for doctors before stethoscope existed, doctors had to listen to the sick supporting her head on the chest of the patient, but this had several issues: in the case of women, there was an embarrassment for them; if they were obese patients, it was not possible to hear well; when the patient did not care for your toilet (a very common situation), was very unpleasant for the doctor, as well as in the case of infectious diseases. However with this invention will avoid all sorts of problems and that the results were better and patients could be better treatment.
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