A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
182/15
A61M 1/16 (2006.01)
Patent
CA 1042814
HEMO DIALYZER SYSTEM EMPLOYING TWO DIALYSATE SOLUTIONS Abstract of the Disclosure A novel dialysis system is disclosed for both making and using a hemo dialyzer employing two novel dialysate solutions. The dialyzer per se used in the system comprises a clamp assembly enclosing three parallel plate dialyzer boards. Between each pair of boards a pair of semi- permeable filtration media is enclosed. A total of six chambers is formed, three between each pair of dialyzer boards. The two chambers bounded by the semi-permeable filtra- tion media form a portion of the flow path for the liquid to be dialyzed, in this case, blood. Of the remaining four chambers, two form a portion of a flow path for one dialy- sate solution and the other two chambers form a portion of the flow path for the remaining dialysate solution. Suitable connections are made on each of the boards for the intro- duction and withdrawal of the two dialysate solutions and suitable ports are provided to communicate with the membrane formed chambers for the introduction and withdrawal of the liquid to be dialyzed. The two novel dialysate solutions are similar in that neither contain any concentration of urea. However, one of the dialysate solutions is hypertonic, that is, it contains a greater concentration of other constituents to be dialyzed than does the liquid to be dialyzed. The other dialysate solution is hypotonic with respect to the other constituents to be dialyzed, that is, it contains a lower concentration of these constituents than does the liquid to be dialyzed. The rate of dialysis is greatly increased by the use of two different dialysate solutions as compared with the prior art processes which employ one dialysate solution. This greatly- increased dialysis rate enables the use of the parallel plate dialyzer, the use of which had substantially been discontinued.
208859
Ackerman Roy A.
Fialkoff Sheldon L.
Na
Tri-Flo Research Laboratories
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