Abstract: A drain cassette for a dialysis unit has a fluid channel between venous and arterial connection ports, and a valve may controllably open and close fluid communication between a drain outlet port and the venous connection port or the arterial connection port. A blood circuit assembly and drain cassette may be removable from the dialysis unit, e.g., by hand and without the use of tools. A blood circuit assembly may include a single, unitary member that defines portions of a pair of blood pumps, control valves, channels to accurately position flexible tubing for an occluder, an air trap support, and/or other portions of the assembly. A blood circuit assembly engagement device may assist with retaining a blood circuit assembly on the dialysis unit, and/or with removal of the assembly. An actuator may operate a retainer element and an ejector element that interact with the assembly.

Abstract: A nasal mask assembly having a nare seal for enclosing the nares of a patient and a pair of lateral support members for engaging the cheekbones of a patient and supporting the nasal mask assembly. An associated headgear assembly constructed of semi-rigid members are selectively interconnected for defining a headgear. The nasal mask assembly is interconnected with depending arms of the headgear assembly by contact connectors enabling the nasal mask to be adjusted linearly and angularly with respect to the headgear assembly.

Abstract: Apparatus for producing carbonation flavoured drinks has a number of features. Water introduced to a water break from the mains supply holds a value open whilst the carbonation chamber is being filled. A concentrate supply includes a metering chamber into which concentrate flows under gravity and from which concentrate is discharged by gas pressure. The concentrate containers include means to indicate the type of concentrate therein and the degree of carbonation of water is controlled by detecting this indication. Change-over from one gas supply bottle to another is achieved utilising the pressure of the gas in the bottle to displace an element which effects the change-over. Concentrate in supply containers thereof is cooled by coolant used from cooling the carbonation chamber.