Multiple sample needle assembly with vein indication

Details Multiple sample needle assembly with vein indication Multiple sample needle assembly with vein indication

1982-08-30

1983-11-22

Coven, Edward M.

Surgery

Truss

Pad

128771, A61B 514

Patent

active

044162901

ABSTRACT:
A multiple liquid sample needle assembly is provided which utilizes a housing with a porous filter which is gas permeable and liquid impermeable for providing gas displacement venting for gas displaced by a liquid sample received in the housing. The invention incorporates a translucent or transparent housing for determining whether access to the liquid sample in question has been obtained. The filter of the assembly cooperates with the sequential application of a plurality of vacuum collection tubes to close off passage of air therethrough during the taking of the samples. In addition, the assembly is arranged to accommodate separate I.V. and negative pressure cannulas, or a single cannula with an I.V. and negative pressure point at opposite ends thereof.

REFERENCES:
patent: 3640393 (1972-02-01), Hurtig
patent: 3734080 (1973-05-01), Petterson et al.
patent: 3814079 (1974-06-01), Le Roy
patent: 3877465 (1975-04-01), Miyake
patent: 4066067 (1978-01-01), Micheli
patent: 4207870 (1980-06-01), Eldridge
patent: 4312362 (1982-01-01), Kaufman
patent: 4340068 (1982-07-01), Kaufman

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