Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1976-06-22
1977-08-09
Lutter, Frank W.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
23292, 128214R, 128DIG5, 210 83, 210360R, 210515, 210516, 210537, 210540, 210DIG23, 222 94, B01D 3302, B04B 300
Patent
active
040409597
ABSTRACT:
A bag for the separation of components in blood by gravitational settlement or centrifugation, has an upper chamber and a lower chamber connected by a slender neck, there being access conduits to each of said chambers and said neck. The bag is so dimensioned that for blood having a normal hematocrit the interfaces between packed red cells and the buffy coat and between the buffy coat and the plasma will lie within the neck. The neck can then be clamped off or otherwise sealed to separate the phases sharply and to permit virtually 100% recovery of the plasma and the packed red cells. In a second embodiment, the buffy coat can be isolated and seals within the system opened to permit intermixing of the plasma and the packed red blood cells under completely sterile conditions. A special support makes it possible for the blood bag to be subjected without distortion to centrifugation.
REFERENCES:
patent: 2848995 (1958-08-01), Ryan
patent: 3187750 (1965-06-01), Tenczar
patent: 3375824 (1968-04-01), Krakauer et al.
patent: 3513976 (1970-05-01), James
patent: 3520471 (1970-07-01), Faust
patent: 3545671 (1970-12-01), Ross
patent: 3554256 (1971-01-01), Anderson
patent: 3800947 (1974-04-01), Smith
patent: 3911918 (1975-10-01), Turner
patent: 3949744 (1976-04-01), Clarke
Berman Irwin R.
Nathan Ira M.
Lutter Frank W.
Sever Frank
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