esophagoscope

In 1881 he developed improved models of the esophagoscope and gastroscope.

An esophagoscope is inserted through the mouth or nose and down the throat into the esophagus.

An esophagoscope is a thin, tube-like instrument with a light and a lens for viewing.

He also devised several medical instruments, including an early esophagoscope that was modification of the "Waldenburg esophagoscope".

General kinds of the scopes are bronchoscope, esophagoscope, gastroscope, duodenoscope, rectoscope, cystoscope, laperoscope, and so on.

Kirstein performed the first direct laryngoscopy in Berlin, using an esophagoscope he had modified for this purpose; he called this device an autoscope.

Dr. Shinya began developing colonoscopic techniques with an esophagoscope from Olympus Optical Co., Ltd..

In 1871, at the society of physicians in Vienna, Carl Stoerk demonstrated an esophagoscope made of two telescopic metal tubes, initially devised by Waldenburg in 1870.