Blood sampler device

Details Blood sampler device Blood sampler device

1986-03-06

1987-06-16

Truluck, Dalton L.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604 4, 604183, 604246, 128765, A61M 500

Patent

active

046733868

ABSTRACT:
Method and apparatus are disclosed for drawing blood from an injection site through an arterial line connected to a fluid supply. The apparatus includes a variable capacity pump mechanism housing having inner walls defining an interior chamber. The housing includes first and second ports connected to a variable capacity interior chamber. A retractable piston is disposed within the housing and is adapted to traverse within the chamber. A piston sealing member is provided about the piston in slidable sealing engagement with the chamber walls to cause fluid to be drawn into the chamber, thereby facilitating the extraction of a blood sample along the arterial line without the need to discharge an initial sample containing disproportionate amounts of supply fluid.

REFERENCES:
patent: 986263 (1911-03-01), Bevill
patent: 4105500 (1978-08-01), Libman et al.
patent: 4114617 (1978-09-01), Turner et al.
patent: 4263922 (1981-04-01), White
patent: 4289648 (1981-09-01), Hoskins et al.
patent: 4316473 (1982-02-01), Beskin
patent: 4341224 (1982-07-01), Stevens
patent: 4370987 (1983-02-01), Bazell et al.
patent: 4385637 (1983-05-01), Akhavi
patent: 4457753 (1984-07-01), Pastrone
patent: 4533348 (1985-08-01), Wolfe et al.

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