Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1989-01-30
1991-07-16
Rosenbaum, C. Fred
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604187, 604191, 604218, 604220, 604246, A61M 3700
Patent
active
050321170
ABSTRACT:
A syringe for the gravity-feed intravenous administration of drugs and the like comprises three hollow, elongated, cylindrical, outer, middle and inner barrels nested concentrically and tandemly within each other and means for suspending the syringe above a patient. The middle barrel has an open end with a rubber stopper on it slidably and sealingly disposed within the outer barrel to adjustably define a liquid-receiving volume therein. The inner barrel has a hollow interior, an open external end containing a microbial filter through which its interior is vented to ambient pressure, and a closed end having a sharp, hollow needle communicating with the interior and extending outwardly therefrom. Selective advancement of the inner barrel toward the rubber stopper causes the needle to penetrate the stopper and vent the volume to ambient pressure through the interior of the inner barrel and the filter, whereby liquid medication in the volume may gravity-feed through an established primary or secondary I.V. set to the patient.
REFERENCES:
patent: 657440 (1900-09-01), McCaw
patent: 1234582 (1917-07-01), Trueblood
patent: 2866457 (1958-12-01), Moore
patent: 2939459 (1960-06-01), Lazarte et al.
patent: 3401692 (1968-09-01), Harris
patent: 4059109 (1977-11-01), Tischlinger
patent: 4171698 (1979-01-01), Genese
patent: 4313440 (1982-02-01), Ashley
patent: 4424057 (1984-01-01), House
patent: 4465476 (1984-08-01), Gahwiler
patent: 4516969 (1985-05-01), Kintner
patent: 4581016 (1986-04-01), Gettig
patent: 4642102 (1987-02-01), Ohmori
patent: 4685910 (1987-08-01), Schweizer
patent: 4693706 (1987-09-01), Ennis
patent: 4702737 (1987-10-01), Pizzino
patent: 4772273 (1988-09-01), Alchas
Akers, et al., "Intravenous Drug Delivery Primer", American Journal of Hospital Pharmacy, vol. 44, pp. 2528-2533, Nov., 1987.
Arant Gene W.
Lawrence Don C.
Polutta Mark O.
Rosenbaum C. Fred
LandOfFree
Tandem syringe does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tandem syringe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tandem syringe will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-127985