first practical endoscope Background Hello, my name is Kohei Sohara and today I will talk about Olympas corporation and it created a first practical endoscope. In the first place Olympas started to develop a first practical endoscope because Uzi Tatsumi who was a surgeon in Tokyo University hospital asked Olympas to make a practical endoscope. At that time in 1950s, there were not medical equipment which doctor want to use toyour patients 　well. If doctor wanted to look at a medical equipment, doctor only incise a body. So, the patient’s body burden is large and it is so difficult that doctor early detected cancer. Before 1950, in 1932 there was an endoscope which Rudolf Schindler developed. But it was not practical because it was so hard and have a risk of leakage of electricity because it was used a leakage of electricity. So, surgeon “Uzi Tatsumi” and engineers of Olympas started to make a first practical endoscope having an ideal which is “not a risk”, “not a patient’s body burden”, “short exposure time” and “clear picture”. Research Question How did Olympas make the first practical endoscope? Methods and Data ・In 1950, Uzi Tatsumi ask engineer of Olmpas to developed the first practical endoscope. ・At first they heard that doctors lived in japan want the endoscope. ・They developed the dedicated small camera to endoscope. ・They used the optical fiber to endoscope. ・They developed the first practical endoscope. Conclusions and Future Research Developing the practical endoscope contributed to lower death late of cancer. It is easy for doctor and it avoided physical burden of patient because it gat smaller