Container for collection of concentrate

A plug connector for use with a bag to accommodate solid or fluid concentrate for the preparation of dialysis fluid using a dialysis machine, having two plug components, whose first plug component is attached on the opening of the bag, and whose second plug component is disposed on the dialysis machine and is connected to a dialysis fluid feed line, wherein the second plug component consists of a socket body, in which an essentially cylindric recess open to the surroundings is designed, into which the first plug component can be inserted, and in which, in a valve chamber, a valve element is shiftably disposed, the valve chamber is linked to an outlet channel, and an inlet channel opens into a region of the recess, in which the valve element is shiftable, the valve element being shiftable toward the input side of the second plug component in a forward position, in which the inlet channel and the outlet channel are in fluid communication with each other and in which the inlet channel and the outlet channel are not in fluid communication with the input side of the second plug component, and the valve element being shiftable away from the input side in a backward position, in which the inlet channel and the outlet channel are in fluid communication with the input side of the second plug component and the valve element is preloaded by means of an elastic element in the forward position.

Apparatus for dialysis, comprising:

• a dialysis machine having a dialysis fluid feed line;
• a bag to accommodate solid or fluid concentrate for preparation of dialysis fluid, said bag including a bag body and at least one opening;
• a first plug component provided on the opening, which plug sealingly surrounds the opening, the first plug component having an inlet for fluid flowing out of the dialysis machine and an outlet for diluted concentrate flowing back to the dialysis machine;
• a second plug component disposed on the dialysis machine and connected to the dialysis fluid feed line, the second plug component comprising a socket body in which an essentially cylindrical recess open to its environment is provided into which the first plug component is insertable and in which a valve element preloaded in a closed position by means of an elastic element is shiftably disposed in a valve chamber, the valve chamber being linked to an outlet channel and an inlet channel opening into a region of the recess in which the valve element is shiftable;
• and
• detachable means for coupling the first and second plug components, whereby when the first and second plug components are connected a first flow path from the dialysis machine to the bag and a second flow path back from the bag to the dialysis machine are formed.