A SYSTEM FOR PREPARING A FLUID INTENTED FOR A MEDICAL PROCEDURE BY MIXING AT LEAST ONE CONCENTRATE IN POWDER FORM WITH WATER AND A CARTRIDGE INTENDED TO BE USED IN SAID SYSTEM

摘要

A system for preparing a fluid intended for a medical procedure substantially at the time of use by mixing of at least one concentrate (11) in powder form with water. The system includes a reservoir (2) for a source of water, at least one vessel (10) containing a concentrate in powder form and a concentrate fluid circuit (8) for withdrawing a small quantity of water from the reservoir (2) and passing same through the vessel (10) containing the concentrate (11) in powder form in order to dissolve the concentrate to produce a concentrate fluid, and for then conducting the concentrate fluid to a primary fluid circuit (1) communicating with the reservoir (2) so that the produced concentrate fluid is mixed with the rest of the water withdrawn from the reservoir 2. In a preferred embodiment, the vessel comprises a self-contained cartridge (10) containing a quantitiy of concentrate in powder form therein which is suitable for one treatment procedure. The system is intended in particular for the preparation of fluids for use in connection with medical procedures such as hemodialysis, hemodialfiltration and hemofiltration. However, it may also be used for the preparation of fluids for other medical procedures or treatments as well. The invention includes also a cartridge intended to be used in the system as the above mentioned vessel (10) and containing a quantitiy of powder concentrate suitable for one treatment.