Method and apparatus for ultrafiltration in hemodialysis

Details Method and apparatus for ultrafiltration in hemodialysis Method and apparatus for ultrafiltration in hemodialysis

1998-02-27

2000-03-28

Stright, Ronald

Chemical apparatus and process disinfecting, deodorizing, preser

Blood treating device for transfusible blood

604 4, A61M 3700, A61M 114

Patent

active

060427841

ABSTRACT:
A method and device for accurately determining the volume of and replacing ultrafiltrate in hemodiafiltration using an ultrafiltrate balance chamber that is subdivided by a movable partition into two balance chamber halves. The two balance-chamber halves being alternately filled, one with ultrafiltrate and the other with substituate, such that the volume of ultrafiltrate is balanced against the volume of substituate. The filling of one chamber with ultrafiltrate or substituate displaces an equal volume of substituate or ultrafiltrate from the other chamber half and diverts the displaced ultrafiltrate or substituate from the balance chamber. The filling volume of the ultrafiltrate balance chamber is used to determine the ultrafiltrate volume or the volume of substituate.

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patent: 5725776 (1998-03-01), Kenley et al.
patent: 5792367 (1998-08-01), Mattisson et al.

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