Chemistry: physical processes
Patent
1977-11-11
1978-11-28
Krizmanich, George H.
Chemistry: physical processes
233 24, 128214E, 128DIG3, 233 19R, B04B 1300
Patent
active
041272315
ABSTRACT:
The support arm is used in an apparatus for the centrifugal liquid processing of whole blood wherein whole blood is withdrawn from a donor and passed through a flexible tubing of a fluid system of the apparatus into a bowl thereof where the blood is centrifuged to separate the same into at least three components. One component which is to be collected is withdrawn through a flexible tubing at a fixed rate of volumetric displacement while the other two components are withdrawn through flexible tubings at variable rates of volumetric displacement. The other two components are recombined and returned to the donor. The withdrawal of the one component is optically monitored to determine whether or not either one of the other components is being mixed with the one component. The support arm is positioned above the bowl for guiding the tubings to the bowl in a first position and is pivotal horizontally to a second position where the bowl can be easily removed. A releasable latch member holds the arm in the first position and mounts an optical sensing system for monitoring the withdrawal of the one component through a light transmissive portion of the flexible tubing, through which the one component is being withdrawn.
REFERENCES:
patent: 2692725 (1954-10-01), Hensgen
patent: 3401876 (1968-09-01), Lucas
patent: 3812482 (1974-05-01), Clark
patent: 3902660 (1975-09-01), Barber
patent: 3986442 (1976-10-01), Khoja et al.
Gutierrez Louis F.
Khoja Mirza A.
Perone John T.
Baxter Travenol Laboratories Inc.
Collins Henry W.
Flattery Paul C.
Krizmanich George H.
Vigil Thomas R.
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