1Graduate School of Engineering;
Osaka University;
Osaka;
Japan 2Graduate School of Frontier Biosciences;
Osaka University;
Osaka;
Japan 3The Center for Advanced Medical Engineering and Informatics;
Osaka University;
Osaka;
Japan;
Graduate School of Engineering;
Osaka University;
Osaka;
Japan;
Hollow; Optical; Fiber; Carbon; Dioxide; Laser; Bending; Loss; Endoscopic; Therapy;