Abstract: A port catheter includes a port housing and a port chamber formed in the port housing and closed by a septum. The port catheter also includes a first catheter connection communicating with the port chamber for the connection of a first catheter, a second catheter connection for connecting a second catheter connected to an infusion pump and supplying a fluid to the port catheter from the infusion pump, and a third catheter connection communicating with the second catheter connection for connecting a third catheter which discharges the fluid supplied by the infusion pump.

Abstract: Throttle with a throttle path formed from two plane-parallel plates connected with one another, wherein the throttle path include a trough formed in at least one of the two plates and sealed by the other plate, which exhibits on one end an inlet which communicates with the throttle path and on the other end an outlet which communicates with the throttle path, characterized in that both plates are made of glass.

Abstract: Prosthesis for the replacement of heart valves, with a valve ring (10) with a radius R, in which at least two substantially elongated wing valves (12, 14, 16) are mounted so as to rotate about in each case an axis (18) located in the ring plane, the axes (18) in the projection on the ring plane having a distance of 0.5 R to 0.9 R from the center of the ring plane and the edges of the inwardly directed portions engage in flush manner on the edges of the corresponding portions of the other wing valves (12, 14, 16) and in the area (20) of the wing valves (12, 14, 16) pointing in the flow direction in the opened state thereof, said valves are provided with a bevel (24), constructed as a sharp break-away edge (22), running from the outside to the inside in the flow direction.