Liquid purification or separation – Processes – Including controlling process in response to a sensed condition
Patent
1997-12-12
1999-11-23
Walker, W. L.
Liquid purification or separation
Processes
Including controlling process in response to a sensed condition
210 85, 604122, B01D 3500, C02F 100
Patent
active
059894385
ABSTRACT:
A blood filter is disclosed which actively removes unwanted particles from the blood without using passive elements such as a cartridge. The blood filter includes a housing having a blood inlet area for receiving blood to be filtered, a blood outlet area for providing filtered blood to a patient, and a blood return area for returning blood having unwanted particles to a reservoir. A plurality of independent blood paths extend from the inlet area to the outlet area of the housing for separate flows of blood therethrough. An array of detectors is placed adjacent the exterior of each blood path for detecting unwanted particles in the blood flowing therethrough. An array of valves is placed in operable relationship with the blood paths to close selected ones of the blood paths when unwanted particles are detected. Blood return conduits open to divert the particle-containing blood to a reservoir. Several arrays of detectors and valve combinations may be provided for redundancy. A feedback and control circuit monitors the number of closed blood paths and sends control or alarm signals when the outlet blood flow reduces below a predetermined minimum. A spiral-shaped inlet manifold distributes the incoming blood into different regions corresponding to mass to help improve the efficiency of the filter.
REFERENCES:
patent: 3560754 (1971-02-01), Kamentsky
patent: 3791517 (1974-02-01), Friedman
patent: 3935876 (1976-02-01), Massie et al.
patent: 4014206 (1977-03-01), Taylor
patent: 4068521 (1978-01-01), Cosentino et al.
patent: 4231366 (1980-11-01), Schael
patent: 4280495 (1981-07-01), Lampert
patent: 4711715 (1987-12-01), Polaschegg
patent: 4863590 (1989-09-01), Ohnishi et al.
patent: 4963253 (1990-10-01), Yen
patent: 4966691 (1990-10-01), Brous
patent: 5055198 (1991-10-01), Shettigar
patent: 5147544 (1992-09-01), Vescovini
patent: 5185086 (1993-02-01), Kaali et al.
patent: 5188604 (1993-02-01), Orth
patent: 5431811 (1995-07-01), Tusini et al.
patent: 5478526 (1995-12-01), Sakai et al.
patent: 5540841 (1996-07-01), Gsell et al.
patent: 5605630 (1997-02-01), Shibata
patent: 5837200 (1998-11-01), Diessel et al.
Baxter International Inc.
Cumberbatch Guy L.
Muramatsu Yasuo
Vinitskaya Lena
Walker W. L.
LandOfFree
Active blood filter and method for active blood filtration does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Active blood filter and method for active blood filtration, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Active blood filter and method for active blood filtration will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1217300