Limited backflow reflux valve and method

Details Limited backflow reflux valve and method Limited backflow reflux valve and method

1997-04-29

1998-04-28

McDermott, Corrine M.

Surgery

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

Material introduced into and removed from body through...

604 93, 604 30, 604247, 604249, 604183, 137512, A61M 3100

Patent

active

057438722

ABSTRACT:
A limited backflow reflux valve for connection between a syringe, catheter, and bulk container of injection fluid. The reflux valve permits injection of fluid from the syringe through the catheter into the patient, and also permits refilling of the syringe from the bulk container, without disconnection of any tubing. The reflux valve also permits a limited volume of fluid to backflow from the catheter into the syringe, so that the catheter may be checked for patency, but prevents any further backflow along this path after this limited volume. Therefore, the limited backflow reflux valve not only permits injection through the catheter, but also permits both withdrawal of blood from the patient and refilling of the syringe from the bulk contrast media container, without requiring disconnection of the catheter or other tubing and without risk of contamination of the syringe or introduction of air, increasing the efficiency of the injection process, enhancing safety, and reducing waste of injection fluid.

REFERENCES:
patent: 3957051 (1976-05-01), Topham
patent: 4210173 (1980-07-01), Choksi et al.
patent: 4246932 (1981-01-01), Raines
patent: 4341224 (1982-07-01), Stevens
patent: 4546791 (1985-10-01), Huang
patent: 4668215 (1987-05-01), Allgood
patent: 4729401 (1988-03-01), Raines
patent: 5034000 (1991-07-01), Freitas et al.
patent: 5129416 (1992-07-01), Ackroyd
patent: 5148828 (1992-09-01), Farnham
patent: 5423751 (1995-06-01), Harrison et al.

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