Hemodialysis apparatus with automatic adjustment of dialysis sol

Details Hemodialysis apparatus with automatic adjustment of dialysis sol Hemodialysis apparatus with automatic adjustment of dialysis sol

1990-03-19

1992-03-03

Hafer, Robert A.

Surgery

Blood drawn and replaced or treated and returned to body

604 5, 604 6, 210 87, 210646, A61M 500

Patent

active

050928368

ABSTRACT:
The invention concerns a hemodialysis apparatus with a hemodialyser (10), which on the blood side has a blood pump (30) to convey blood from a patient to the dialyser (10) and on the dialysis solution side has a dialysis solution pump (20) to convey dialysis solution to the dialyser. The hemodialysis apparatus has a control device (100) whereby a signal derived from the magnitude of the blood flow is fed to the said device on the input side and whereby the said device gives a signal on the output side as a function of the blood flow in order to adjust the dialysis solution flow. With an automatic control device of this type dialysis concentrate, prepared water and energy can be saved. The predetermined control function can be a linear function. It can also be given in the form of numerical data which is fed into a matrix in the control device (100) which for every blood flow of one particular dialyser (10) gives a dialysis solution flow at which a certain percentage of clearance is achieved when the dialysis solution flow is continuous.

REFERENCES:
patent: 4353368 (1982-10-01), Slovak et al.
patent: 4650458 (1987-03-01), Dahlberg et al.
patent: 4776837 (1988-10-01), Kopp
patent: 4828543 (1989-05-01), Weiss et al.
patent: 4885001 (1989-12-01), Leppert
patent: 4894164 (1990-01-01), Polaschegg
patent: 4923598 (1990-05-01), Schal

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