This relates to a shutter for a rectoscope, comprising a bolt insertable into the anterior terminal cross section of the rectoscope tube, and a terminal part rigidly connected to the bolt, arranged at a distance corresponding approximately with the length of the rectoscope.
4215678 - Endoscope - Owned by Propper Manufacturing Co., Inc. (Long Island City, NY) Heine Optotechnik GmbH & Co. KG (Herrsching,DE)
An endoscope includes a light conducting outer tube and a light absorbing inner tube, with the inner tube being located concentric with the outer tube and being spaced a distance radially inwardly from the outer tube so as to maintain total internal reflection in the light conducting material of the outer tube.
