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A system for preparing a fluid intended for a medical procedure substantially at the time of use by mixing of at least one concentrate in powder form with water. The system includes a reservoir for a source of water, at least one vessel containing a concentrate in powder form and a concentrate fluid

A system for preparing a fluid intended for a medical procedure substantially at the time of use by mixing of at least one concentrate in powder form with water. The system includes a reservoir for a source of water, at least one vessel containing a concentrate in powder form and a concentrate fluid circuit for withdrawing a small quantity of water from the reservoir and passing same through the vessel containing the concentrate 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circuit communicating with the reservoir so that the produced concentrate fluid is mixed with the rest of the water withdrawn from the reservoir. In a preferred embodiment, the vessel comprises a self-contained cartridge containing a quantity 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, hemodiafiltration and hemofiltration. However, it may also be used for the preparation of fluids for other medical procedures or treatments as well.

대표청구항 ▼

A system for preparing a fluid for a medical procedure by mixing of at least one concentrate in powder form with water, said system comprising: a source of water; a vessel for containing a concentrate in powder form; first fluid conducting means having a first end communicating with said source of w

A system for preparing a fluid for a medical procedure by mixing of at least one concentrate in powder form with water, said system comprising: a source of water; a vessel for containing a concentrate in powder form; first fluid conducting means having a first end communicating with said source of water for withdrawing water from said source of water, and a second end for delivering a prepared solution; second fluid conducting means communicating with said source or water and with an inlet of said vessel for introducing water from said source of water into said vessel to produce a concentrate fluid containing dissolved powder concentrate in water; third fluid conducting means communicating with an outlet of said vessel and with a mixing point in said first fluid conducting means intermediate said first and second ends for conducting said concentrate fluid from said vessel into said first fluid conducting means to be mixed with fluid being conducted through said first fluid conducting means to thereby produce a prepared solution in said first fluid conducting means for delivery to said second end of said first fluid conducting means; measuring means in said first fluid conducting means downstream of said mixing point for measuring the composition of the prepared solution obtained by mixing of said concentrate fluid and water in said first fluid conducting means; and flow regulating means in said third fluid conducting means responsive to said measuring means for controlling the flow of said concentrate fluid from said vessel.