Apparatus for collecting blood sample

Details Apparatus for collecting blood sample Apparatus for collecting blood sample

1992-05-05

1993-08-24

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

128637, 128763, 128765, 128766, 604 76, B01L 1100

Patent

active

052386554

ABSTRACT:
A blood sample collection apparatus includes a removable plug adapted to fit within the open end of a blood collection tube. A vacuum tube extends through the plug for evacuating air from the collection tube. A pickup tube protrudes outwardly from the plug for supplying blood to a drop tube extending downwardly from the plug with its lower end positioned within the collection tube substantially below the lower end of the vacuum tube. A primary filter is sealed against the underside of the plug to filter the air drawn through the vacuum tube by a portable hand-held vacuum source. The primary filter is a hydrophobic microporous membrane operative to allow airflow therethrough but to block liquid flow therethrough. A secondary filter is operatively interposed between the vacuum tube and he vacuum source for increased safety. Installation of the secondary filter bypasses a bleeder port which renders the apparatus inoperative in the absence of the secondary filter.

REFERENCES:
patent: 3113688 (1963-12-01), Campbell
patent: 4813931 (1989-03-01), Hauze

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