Medical fluid control device for a medical fluid line system

A medical fluid control device for a medical fluid line system, the medical fluid control device comprising:

• a fluid flow housing having a cylindrical inner chamber with an inlet-side connection port, an outlet-side connection port for connecting to a further functional component of the fluid line system, and an injection port which is provided with an openable closure element, wherein the inlet-side connection port and outlet-side connection port are located on opposite sides of the cylindrical inner chamber, and the injection port is oriented at 90 degrees relative to the inlet-side connection port and the outlet-side connection port with respect to a rotation axis of the cylindrical inner chamber;
• an adjustment member movably mounted within the cylindrical inner chamber and configured to rotate about the rotation axis of the cylindrical inner chamber, the adjustment member having:
• a first flow channel section extending into the adjustment member at a first location, a second flow channel section extending into the adjustment member at a second location located opposite the first location, and a third flow channel section extending into the adjustment member at a third location, the third location being oriented at 90 degrees relative to the first location and second location with respect to the rotation axis of the cylindrical inner chamber,
• wherein the adjustment member is movable about the rotation axis of the cylindrical inner chamber between at least:
• a first position in which the first flow channel section faces the inlet-side connection port, the second flow channel section faces the outlet-side connection port and the third flow channel section faces the injection port, and
• a second position in which the first flow channel section faces the injection port, the second flow channel section faces a portion of the cylindrical inner chamber opposite the injection port, and the third flow channel section faces the outlet-side connection port;
• and
• a first mechanical flow acceleration means located within the third flow channel section of the adjustment member, the first mechanical flow acceleration means being configured to assist with inside flushing of the injection port during a fluid throughflow when the adjustment member is in the first position;
• wherein:
• the third flow channel section comprises a channel wall defining a first longitudinal axis,
• the first mechanical flow acceleration means comprises a tube wall inside the channel wall that defines a second longitudinal axis, and
• the second longitudinal axis is coaxial in its entirety with the first longitudinal axis.