Automatically closed dripping apparatus for intravenous administ

Details Automatically closed dripping apparatus for intravenous administ Automatically closed dripping apparatus for intravenous administ

1992-09-28

1993-08-10

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

A61M 516

Patent

active

052344142

ABSTRACT:
A dripping apparatus for intravenous administration includes: an intravenous container filled with a medical liquid in the container, a reservoir connected to the intravenous container having a diaphragm formed in a lower portion of the reservoir, a delivery tube connected to the reservoir for directing the medical liquid from the container and the reservoir to an injection needle or cannula into a patient's body through a dripping flow rate adjuster, and a floatable valve slidably held in the diaphragm in the reservoir, in which the valve is operatively floated to open a valve opening in the diaphragm by the liquid in the reservoir for performing the dripping operation and upon an exhausting or empty in the reservoir, the valve will gravitationally descend to close the valve opening for preventing air entrance into the needle and preventing a backflow of a patient's blood to clog the needle.

REFERENCES:
patent: 4449976 (1984-05-01), Kamen
patent: 4731060 (1988-03-01), Catalano
patent: 4870987 (1989-10-01), Cheng

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