Abstract: A tube set intended for extracorporeal treatment of blood and similar perishable liquids, e.g. by dialysis, includes a spacer adapted to rigidly connect an inlet end of a pump segment for a tube pump to an outlet end of the pump segment. The spacer is adapted to transfer liquid to and from the pump segment. Ports may be provided in the spacer for the purpose of withdrawing liquid samples from the spacer or supplying reagents or priming fluids to the liquid flowing through the spacer. A stay formed integrally with the spacer supports the spacer against the tube pump.

Abstract: An improvement in a drip chamber for use with a tube set adapted for the extracorporeal treatment of blood and similar perishable liquids, e.g. in conjunction with dialysis, wherein the drip chamber having a lid which includes an inlet, a duct connected thereto, an outlet, a drip forming means and a sampling port structurally arranged to enable sampling of the liquid before it drips from the drip forming means. When the tube set is used as a venous branch between a dialyser and a patient, many diverse functions intended to be performed in conjunction with the venous branch can be performed in or on the drip chamber.