Liquid purification or separation – Processes – Including controlling process in response to a sensed condition
Patent
1997-06-16
1999-03-02
Kim, John
Liquid purification or separation
Processes
Including controlling process in response to a sensed condition
210 85, 210 86, 210 90, 210 97, 210103, 210104, 210108, 210111, 210142, 210143, 2101952, 210650, 210741, 210744, 210798, 210805, 604 4, 604 5, 604 6, 604 65, 604 67, B01D 6100, B01D 6118, A61M 100, A61M 134
Patent
active
058766111
ABSTRACT:
An apparatus is disclosed for salvaging a patient's own blood during intraoperative surgical procedures and reinfusing the blood, washed and filtered, to the patient substantially continuously, on-line and in real-time. The apparatus comprises suction means, admixing means for admixing aspirated blood with a washing fluid, filtering means for filtering the admixture through an emboli filter, monitoring means for measuring the amount of cellular component volume in the aspirated, filtered blood, filtration means for removing excess fluid and impurities from the blood, and reinfusion means for introducing the washed and filtered blood to the patient free of emboli. The apparatus is structured to introduce washing fluid to the aspirated blood in proportion to the measured hematocrit level of the blood that is aspirated. Methods are disclosed for priming of the system, cleaning and flushing the apparatus of blood clots and debris by means of reverse filtration and filtration of blood for reinfusion. Methods for automated control of the blood salvaging system and operation are also disclosed.
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