Indwelling intravenous needle with two blood-backflow passage ro

Details Indwelling intravenous needle with two blood-backflow passage ro Indwelling intravenous needle with two blood-backflow passage ro

1992-05-05

1994-01-18

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604272, A61M 5178

Patent

active

052795721

ABSTRACT:
An indwelling intravenous needle having two blood backflow passage routes. One is an internal cavity of a metallic internal needle, which is the basic construction of an indwelling intravenous needle of a conventional type. The other is being a groove provided on the surface of the internal needle extending from the proximal cutting-edge to the internal-needle base is disclosed. By visually observing blood backflows in these two passage routes separately, the indwelling intravenous needle can be pierced into the vein accurately, quickly and safely.

REFERENCES:
patent: 3081770 (1963-03-01), Hunter
patent: 3714945 (1973-02-01), Stanley
patent: 4020835 (1977-05-01), Nordstrom et al.
patent: 4186750 (1980-02-01), Patel
patent: 4203436 (1980-05-01), Grimsrud
patent: 4850373 (1989-07-01), Zatloukal et al.
patent: 4894052 (1990-01-01), Crawford

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