Multiple sample needle assembly with vein entry indicator

Details Multiple sample needle assembly with vein entry indicator Multiple sample needle assembly with vein entry indicator

1981-07-20

1983-11-22

Howell, Kyle L.

Surgery

Truss

Pad

128763, 128764, A61B 514

Patent

active

044162910

ABSTRACT:
A multiple sample needle assembly useful in collecting liquid samples from a source comprises a housing with a chamber therein. A first cannula is in fluid communication with the chamber and is adapted for insertion into a liquid source. A second cannula is also in fluid communication with the chamber and is adapted to deliver liquid passing through the chamber to a liquid collector. A gas-permeable, liquid-impermeable porous member is positioned in the lumen of the second cannula. The second cannula preferably includes at least one side hole and an operable valve for collecting liquid from the second cannula by diverting liquid flowing therethrough away from the liquid-impermeable member.

REFERENCES:
patent: 3200813 (1965-08-01), Cristakis
patent: 3469572 (1969-09-01), Nehring
patent: 3874367 (1975-04-01), Ayres
patent: 3886930 (1975-06-01), Ryan
patent: 4207870 (1980-06-01), Eldridge

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