Apparatus and method for preparation of a hemodialysis solution optionally containing bicarbonate
Patent 4202760 Issued on May 13, 1980. Estimated Expiration Date: 
July 24, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
July 24, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorsAssigneeApplicationNo. 05/927322 filed on 07/24/1978US Classes:252/364, SOLVENTS137/101.11, Main line flow displaces or entrains material from reservoir210/101, Proportionate feed means210/321.71, Dialyzer with dialysate proportioning means210/647, Maintaining critical concentration(s)210/96.2, With membrane222/63, Motor control422/256, Liquid-liquid contact means422/44BLOOD TREATING DEVICE FOR TRANSFUSIBLE BLOODExaminersPrimary: Hart, Charles N.Assistant: Sadowski, David R. Attorney, Agent or FirmInternational ClassesA61M 1/16 (20060101)B01F 5/00 (20060101) B01F 5/10 (20060101) AbstractApparatus and method for make up of a hemodialysis solution and supply of same to an artificial kidney; the solution optionally contains bicarbonate in any desired amount. The apparatus comprises a recirculation loop which mixes a hemodialysis dialysate concentrate with deaerated water and may include another interconnected recirculation loop adopted to form an aqueous bicarbonate solution. Both recirculation loops mix the concentrates in the recirculation fluid in venturi means operated by continuously controlling the velocity of fluid flowing therethrough to create suction to inject the requisite quantity of concentrate to form the final desired composition in the product hemodialysis solution.Other References
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