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System for the preparation of a fluid concentrate intended for medical use

  • US 5,348,389 A
  • Filed: 10/26/1992
  • Issued: 09/20/1994
  • Est. Priority Date: 02/19/1990
  • Status: Expired due to Term
First Claim
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1. Apparatus for the preparation of a concentrate solution for use as a medical solution from water and undissolved powder comprising water supply means for supplying said water, dissolution means for dissolving said undissolved powder in said water, said dissolution means comprising a container initially retaining a predetermined amount of said undissolved powder therein whereby said water supply means is adapted to supply said water to said container and at least a portion of said predetermined amount of undissolved powder can be initially dissolved in said water so as to provide a partially prepared concentrate solution in said container, withdrawal means for withdrawing said partially prepared concentrate solution from said container, and recirculation means including pump means for recirculating said partially prepared concentrate solution in a recirculating path including said container for further dissolution of said predetermined amount of undissolved powder until all of said predetermined amount of undissolved powder becomes dissolved in said partially prepared concentrate solution to further concentrate said partially prepared concentrate solution to a predetermined final concentration, said recirculation means further including at least one conduit for providing a flow path for said concentrate solution during said recirculation, said at least one conduit being connected between said pump means and said container so as to form said recirculation path therebetween, and connector means arranged between said container and said at least one conduit for permitting said container to be selectively connected and disconnected from said at least one conduit whereby said container is adapted to be subsequently connected to a medical treatment apparatus.

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