A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
182/15.2
A61M 1/16 (2006.01)
Patent
CA 1167388
ABSTRACT OF THE INVENTION This invention provides an automated single pass dialy- sate supply apparatus and a method for conducting hemodialysis treatments when the apparatus is used. The apparatus is of the closed circuit type and provides a pair of cylinders, each equipped with a hydraulically driven diaphragm, which supply fresh dialysate to and remove spent dialysate from an artifi- cial kidney on an alternating time basis; the improvement resides in the means which sense the difference in time of arrival of the end of stroke of each diaphragm and automati- cally counteract these differences to either maintain or restore synchronization of the instant of end of stroke of each diaphragm in each half cycle of operation. The hemodialysis treatment method permits operator pre- setting of the desired ultrafiltrate removal rate and insures maintenance of that preset rate throughout the hemodialysis treatment period.
368119
Egler Mark S.
Landau Julian I.
Papanek Thomas H.
Cordis Dow Corp.
Gowling Lafleur Henderson Llp
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