Hemodialysis apparatus

Details Hemodialysis apparatus Hemodialysis apparatus

2007-07-10

2007-07-10

Kim, John (Department: 1723)

Liquid purification or separation

Automatic control

C210S086000, C210S097000, C210S321650, C210S646000, C210S739000, C210S744000

Reexamination Certificate

active

10484850

ABSTRACT:
A hemodialysis apparatus includes means for measuring or calculating a blood volume or a blood volume change as a blood index level, a hemodialysis means, and a controlling means that controls hemodialysis conditions of the hemodialysis means according to the blood index level. The controlling means controls the hemodialysis means so that hemodialysis operation is carried out without performing water removal at the time of the initiation of the hemodialysis operation until the blood volume stabilizes. The hemodialysis operation is carried out by performing water removal after the blood volume is stabilized by the hemodialysis operation without performing water removal, and that is a constitution so that it is possible to calculate the primary blood volume (BV0) of each patient according to the following formula (I), from % ΔBV of hemodialysis operation which has been carried out before the blood volume is stabilized, and the increased blood volume circulating outside the body. The primary blood volume (BV0)=increased blood volume circulating outside the body (space outside the body)/% ΔBVx. (I), wherein % ΔBVxis the ratio of the volume change of the blood volume (BV) when hemodialysis is performed without performing water removal.

REFERENCES:
patent: 4469593 (1984-09-01), Ishihara et al.
patent: 5416027 (1995-05-01), Baudin et al.
patent: 6602424 (2003-08-01), Kramer et al.
patent: 5-76445 (1993-10-01), None
patent: 11-221275 (1999-08-01), None
patent: 2002-186666 (2002-07-01), None
English translation copy of Japanese Patent No. 11-221275.

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