Evolution of the stethoscope by MARCELLY FATIMA ZANOVELLO

The first one

marcellyzanovello — 2022-03-23 20:33:35 UTC

In 1816, French doctor René Laennec invented the first stethoscope using a long laminated paper tube to channel sound from the patient's chest to the ear.

2022-03-23 20:44:51 UTC

Until arriving at the models we have today, there were several evolutions and modifications. Laennec himself experimented with models of wood, ivory and other types of materials.

1829

2022-03-23 20:45:49 UTC

Charles James Blasius Williams, one of Laennec's most brilliant disciples, built a binaural model

1851

2022-03-23 20:48:15 UTC

Dr. George Philip Camman developed a device that is very close to current models. It was a great advance, as it easily adapted to the examiner's ear and could be carried

1940

2022-03-23 20:52:47 UTC

Stethoscopes with “double-sided” parts became standard. One side of the piece that comes into contact with the patient's chest is called the diaphragm (a plastic disc that closes the opening

Littman

2022-03-23 20:53:54 UTC

In 1961, Dr. David Littman, a leading cardiologist and international authority on electrocardiography, described the model that has come to be the most used in medical practice today.