Pre-evacuated blood collection tube with anti-hemolysis baffle s

Details Pre-evacuated blood collection tube with anti-hemolysis baffle s Pre-evacuated blood collection tube with anti-hemolysis baffle s

1982-09-28

1985-01-08

Fisher, Richard V.

Liquid purification or separation

Filter

Movable medium

210927, 210516, 210359, 422101, 215247, 128763, 604190, 604230, B01D 3300

Patent

active

044926340

ABSTRACT:
An improved pre-evacuated blood sampling collection tube having two oppositely positioned rubber stoppers sealing the corresponding oppositely positioned open ends of the said cylindrical tube, and interposed within the said tube is a slideable perpendicularly placed filtration disc that filters and separates the cellular elements of the whole blood from its fluid counterpart during the process of centrifugation. One embodiment of the tube having a special structural extension baffle at one of the two sealing rubber stoppers, said structural extension found proximal to the puncturable entrant area of the blood specimen into the tube, acts as the structural baffle that prevents or curtails hymolysis of the red blood cells during the sudden onrush of blood from the blood source through the bore of the collection needle, and into the vacuum of the said collection tube. Another alternative embodiment comprising of a cylindrical tube with only one open end sealed by a corresponding rubber stopper having a structural extension baffle system, and without an internally located filtration disc.

REFERENCES:
patent: 1737844 (1929-12-01), Heineman et al.
patent: 2618264 (1952-11-01), Bloxsom
patent: 3661265 (1972-05-01), Greenspan
patent: 3814248 (1974-06-01), Lawhead
patent: 3848579 (1974-11-01), Villa-Real
patent: 3881640 (1975-05-01), Noble
patent: 3897337 (1975-07-01), Ayres
patent: 4295476 (1981-10-01), Quaas

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