Abstract: A peristaltic pump is described for operating simultaneously on two fluid lines having different wall thicknesses comprising a rotatable head having rollers and enclosed within a hollow body. The hollow body has a central axis with an internal first cylindrical surface portion at a first radius R from the axis, and a second cylindrical surface portion at a second radius r from the axis. The interspace between the periphery of the respective roller and the respective cylindrical surface portion is arranged to perfectly occlude the respective different sized fluid line.

Abstract: A chuck device comprises clamp elements having, at one end, an underlying tooth and a conical surface conjugated with the surface of a centrifugation cell. The clamp elements are uniformly distributed on the circumference of a plate including a surface upon which the bottom of the cell rests. The clamp elements are pivoted on the plate so as to be rotatable in radial planes, and can be locked in the closed position.

Abstract: The device comprises a single needle circuit having lines for admitting whole blood drawn from a patient to a continuously rotating rotor, re-introducing red cells and collecting plasma, the lines being respectively connected to the three outlets of a coupling static block rigidly attached to the rotor, two photocell-lightsource assemblies being further provided for automatically cyclically switching over the blood pick up and red cells introduction steps in the device steady state condition of operation.

Abstract: The device comprises a rotor formed with a circumferential groove including a widening with an apertured bottom whereat two monitoring stroboscopes are arranged, the groove being provided for engaging with the red cell and plasma exit end of a disposable bag, the other end whereof is so designed and arranged as to receive whole blood.

Abstract: A portable machine for regenerative dialysis comprises a dialyzing liquid reservoir in which is immersed a suction duct connected to a heating tube the temperature of which is controlled by a thermal probe pair piloting a temperature adjusting element. The outlet of the heating tube is connected to the suction side of a dialyzing liquid pump having a first and second delivery ducts opening in the dialyzing liquid reservoir wherein are interposed a dialyzer element and a dialyzing liquid regenerating cartridge respectively.