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A system and process for preparation of dialysis concentrate solution from dry chemicals and water. The source of hemodialysis chemicals for a batch is a drum selectively filled with dry chemicals such that an inner core region therewithin is loaded with chemicals which slurry and dissolve the least

A system and process for preparation of dialysis concentrate solution from dry chemicals and water. The source of hemodialysis chemicals for a batch is a drum selectively filled with dry chemicals such that an inner core region therewithin is loaded with chemicals which slurry and dissolve the least readily. The required amount of water is metered into a mix tank. Water is pumped from the tank into a spray head fitted over the selectively filled drum. Water is injected onto the chemicals within the inner core region by the use of a nozzle having a narrow spray angle. The chemicals within the inner core region are preferentially dissolved or slurried before the other chemicals within the drum. The slurried and dissolved chemicals are removed from the drum by a suction wand and are entirely solubilized in the tank. Cycling of fluid continues from the drum to the tank and vice versa until all of the chemicals in the drum have been removed. Circulation of the fluid is continued until a uniform solution results. The dialysis concentrate solution is filtered and checked for conductivity prior to dilution in a conventional proportioning system for ultimate use in hemodialysis.

대표청구항 ▼

A prepackaged container of all of the dry chemicals needed to prepare an aqueous solution by introduction of water into said container, the prepackaged container including at least one chemical which when admixed with pure water less readily forms a solubilized mixture and slurry than other chemical

A prepackaged container of all of the dry chemicals needed to prepare an aqueous solution by introduction of water into said container, the prepackaged container including at least one chemical which when admixed with pure water less readily forms a solubilized mixture and slurry than other chemicals within the container, the prepackaged container consisting of: (a) a watertight container having a removable lid, (b) a plurality of dry chemicals within said container, and (c) said dry chemicals being positioned within said container such that a predetermined portion of said container consists essentially of only those chemicals which solubilize and form a slurry with pure water less readily than the other chemicals positioned within other portions of said container. A blending system for preparation of hemodialysis solution from water and dry chemicals comprising: (a) a dialysis solution tank; (b) means for supplying water into said tank; (c) a source of hemodialysis chemicals, said chemicals being arranged within said source such that only the chemicals having the slowest solubilization and slurry characteristics are positioned within an inner core region of said source and the other more soluble chemicals are positioned outside of the inner core region; (d) delivery means for conveying water and water-chemical diluent within said tank to said source of chemicals; said delivery means including a nozzle means for directing a high velocity spray of the tank liquid over a spray angle which is directed onto the inner core region of said source of chemicals so as to cause the chemicals therewithin the dissolve and form a slurry before the chemicals outside of the inner core region are substantially dissolved or slurried; (e) pick-up wand means for conveying said dissolved chemicals and slurry within said chemical source to said dialysis solution tank; and (f) dialysis concentrate solution tank mixing means for receiving said dissolved chemicals and slurry from said pick-up wand means for mixing same within said tank.