Abstract: A main line for delivering a medical solution is connected at one end to a source of liquid. A secondary line is connected at two locations to the main line, bypassing a portion of the main line. A reservoir containing a particulate product is located in the secondary line. During a priming step, liquid is pumped to the reservoir in order to pressurize the reservoir and fill the reservoir to sufficiently immerse the particulate product. This priming step prevents the formation of agglomerates and preferential paths through particulate product. After the reservoir is primed, a fraction of liquid flowing through the main line is diverted into the reservoir and then routed back to the main line to introduce a solution of liquid and particulate product into the main line.

Abstract: A device for preparing a solution for medical use from a liquid and at least one powdered or crystallized salt, comprising:a main line (11) having a first end connected to a source (10) of liquid and a second end for delivering the solution,at least one secondary line (15, 19; 16, 20) joined as a by-pass to the main line (11), this secondary line comprising a reservoir (13, 14) containing a powdered or crystallized salt and having an inlet opening and an outlet opening situated respectively at a high point and a low point of the reservoir (13, 14),means (12, 21, 22) for causing liquid to circulate in the lines,means (17, 21; 18, 22) for producing the immersion of the powdered or crystallized salt in the reservoir (13, 14).

Abstract: Spacers for membrane exchanges whose useful exchange zone is divided by at least one transversal rib directing one of the fluids to the side of the exchange zone where it passes through orifices to circulate subsequently on the opposite face.Application to heat and/or material exchanges with various fluids, especially biological fluids. Particular applications in haemodialysis and in blood oxygenation.