Fig. 1

Image of the pre-clinical experiment using raw chicken esophagus. To test the amount of the heat sufficient to cauterize only its mucosal layer without heat denaturing its muscle layer. A Diode Laser System ADL-20 generated 810-nm wavelength laser during the active mode, which was guided through the glass fiber, and a metal cap attached to the top of the glass fiber (arrow) was heated with the laser emission