Abstract: A device for the introduction of contrast medium into an anus preater shaped in the abdominal wall using an inlet pipe to be inserted into the anus, which comprises an inlet pipe surrounded by a bell-shaped device that is open toward the abdominal wall and rests, at its circumference with a circular ring contact area, against the abdominal wall and with a circular bladder in its interior, that also rests against the abdominal wall in the area between the contact area and the inlet pipe and which is capable of being put under excess pressure.

Abstract: A surgical milling tool includes a body having a hemispherically-shaped outer surface and defining an internal cavity. Cutting blades carried at spaced locations on the outer surface are operative to mill tissues of a joint socket when the tool is introduced and rotated in the socket. Holes are formed through the outer surface and communicate with the internal cavity to channel cut-off tissues into the cavity as the tool is rotated. A tool support is releasably connected to the tool body to assist in positioning and rotating the body. The support includes a cover which releasably closes the body cavity to retain cut-off tissues within the cavity. Several related tool body and tool support embodiments are described which include structures for releasably drivingly connecting the tool body and the tool support. Some of the embodiments include movable latching elements for securing connections formed between the tool bodies and the tool supports.