Entry indicator device for arterial or intravenous needle

Details Entry indicator device for arterial or intravenous needle Entry indicator device for arterial or intravenous needle

1992-12-16

1994-05-24

Green, Randall L.

Surgery

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

Treating material introduced into or removed from body...

604900, 61M 5178, A61M 5178

Patent

active

053144104

ABSTRACT:
A blood vessel entry indicator device is provided which includes a colored flexible membrane disposed within the transparent body of a hypodermic needle that is stretched over the proximal end of the needle cannula. As the needle reaches the inside of the blood vessel, pressure within the vessel is transferred through the cannula to the membrane which moves or inflates indicating that entry has been achieved. A stopper is provided for arterial use. Because it is pressure sensitive, the invention provides a positive indication of blood vessel entry, avoiding double puncture of the same blood vessel.

REFERENCES:
patent: 2735428 (1956-02-01), Huber
patent: 2735429 (1956-02-01), Huber
patent: 3089489 (1963-05-01), Dunmire
patent: 4108175 (1978-08-01), Orton
patent: 4487605 (1984-12-01), McGaughey et al.
patent: 4828548 (1989-05-01), Walter
patent: 4904240 (1990-02-01), Hoover

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