Fluid sample collection device

Details Fluid sample collection device Fluid sample collection device

1980-01-07

1981-03-17

Smith, William F.

Surgery

Truss

Pad

128763, 128766, 233 26, 422100, A61B 1000

Patent

active

042561205

ABSTRACT:
An evacuated blood sample collection tube is provided with a stopper carrying a one-way valve for preventing blood drawn into the tube from flowing back to the patient, and for preventing blood trapped in the valve after a sample has been taken, from flowing to the sample during centrifugal blood phase separation. The valve includes an elastomeric valve member and a ring member which moves in response to centrifugal forces to a position in which it applies pressure on the valve member to maintain the valve closed during centrifugation.

REFERENCES:
patent: 3159159 (1964-12-01), Cohen
patent: 3459177 (1969-08-01), Deuschle
patent: 3706305 (1972-12-01), Berger et al.
patent: 3771965 (1973-11-01), Grama
patent: 3838843 (1974-10-01), Bernhard
patent: 3874367 (1975-04-01), Ayres
patent: 3942514 (1976-03-01), Ogle
patent: 3965889 (1976-06-01), Sacha
patent: 4112924 (1978-09-01), Ferrara et al.
patent: 4134512 (1979-01-01), Nugent
patent: 4207870 (1980-06-01), Eldridge

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