Abstract: A connecting device for a medical infusion system includes a connection piece which has a connecting profile for the connection of a functional part of the infusion system. The connecting device also has a resiliently flexible, cup-like valve body which is arranged in the connection piece and has a valve casing and cap-shaped top region which is provided with a slit arrangement. Further, the connecting device has a dimensionally stable base portion on which a base ring of the valve casing is supported and which is firmly connected to the connection piece. In the unloaded initial state, the valve casing has a convex internal contour which, starting from the cap-shaped top region, first expands in the direction of the base ring and subsequently narrows again, forming an O-like internal longitudinal section. The connecting device can be in the form of a three-way stopcock for an infusion system.

Abstract: A medical fluid control device for a medical fluid line system includes a fluid flow housing with at least one connection port for connecting to a further functional component of the fluid line system and which has an injection port with an openable closure element, and also having an adjustment member which is mounted movably in the fluid flow housing and which has flow channel sections which, depending on an adjustment position of the adjustment member, can be moved toward the at least one connection port and/or the injection port for a fluid throughflow. Assigned to at least one flow channel section of the adjustment member and/or to the injection port is at least one mechanical flow acceleration mechanism which assists with inside flushing of the injection port during a fluid throughflow.

Abstract: A medical fluid control device for a medical fluid line system includes a fluid flow housing with at least one connection port for connecting to a further functional component of the fluid line system and which has an injection port with an openable closure element, and also having an adjustment member which is mounted movably in the fluid flow housing and which has flow channel sections which, depending on an adjustment position of the adjustment member, can be moved toward the at least one connection port and/or the injection port for a fluid throughflow. Assigned to at least one flow channel section of the adjustment member and/or to the injection port is at least one mechanical flow acceleration mechanism which assists with inside flushing of the injection port during a fluid throughflow.

Abstract: A connecting device for a medical infusion system includes a connection piece which has a connecting profile for the connection of a functional part of the infusion system. The connecting device also has a resiliently flexible, cup-like valve body which is arranged in the connection piece and has a valve casing and cap-shaped top region which is provided with a slit arrangement. Further, the connecting device has a dimensionally stable base portion on which a base ring of the valve casing is supported and which is firmly connected to the connection piece. In the unloaded initial state, the valve casing has a convex internal contour which, starting from the cap-shaped top region, first expands in the direction of the base ring and subsequently narrows again, forming an O-like internal longitudinal section. The connecting device can be in the form of a three-way stopcock for an infusion system.