Abstract: An endoscopic instrument for the application of ligature binders and a ligature are described. A base body and an actuation part of a handle part are longitudinally displaceable relative to each other against an elastic force within a fixed range. Connected to the actuation part is an actuation rod at whose distal end a first ratchet heat is secured. A shaft, firmly connected to the base body, carries a second ratchet head at its distal end. With the help of the ratchet heads, which are matched to the toothed end zone of a ligature binder, a ligature can be drawn together. A ligature whose end zone has already been inserted into the endoscopic instrument prior to the operation can be brought into a closed shape with the help of a constricted zone in its binding part and of a longitudinal slot in its headpiece.

Abstract: A mediastinoscope having a shaft which is traversed by a photoconductor and an observation optical system, with the shaft being provided at its distal end with an atraumatically shaped cap, the greatest diameter of which is greater in comparison with the diameter of the shaft and into a cavity of which distally has an aperture, channels and the end of the optical system open out. Auxiliary instruments extending through a shaft channel can be conducted distalwards as far as the treatment location.

Abstract: The rectoscope comprises a short, wide tube having a proximal coupling housing or a coupling housing which may be coupled at its distal side to a tube of optional length and width. The coupling housing may be coupled at its proximal side to a mandrel or an instrument carrier which is equipped with axially parallel through-bores, for sealed traversal by an optical system and auxiliary instruments. The tube is rigidly connected to an operating table or the like by means of a handle. Passages through which an inert gas may be introduced into the rectum under pressure lead into the rectoscope through the handle or separately.