Surgery – Respiratory method or device – Ozone or ion generation
Patent
1976-05-24
1978-03-21
Truluck, Dalton L.
Surgery
Respiratory method or device
Ozone or ion generation
128214E, 137556, 222 39, 222 49, 340282, A61M 514
Patent
active
040797368
ABSTRACT:
The combination drug administration device and alarm system is adapted to be connected to a source of intravenous liquid and to a patient. A container is provided having a inlet and an outlet. A piston is slidably mounted in the container for movement between extended and retracted positions. A stem is secured to the piston and has a portion thereof remaining out of the container during movement between the extended and retracted positions. A switch is provided and is mounted on the stem exterior of the container so that the switch means can be slidably positioned on the stem and will be retained on the stem in an adjusted predetermined position thereon but which will not impede movement of the piston and the stem in the container. The switch has an operating member adapted to be engaged by the container as the piston and the stem move as liquid is being dispensed from the container to cause actuation of an alarm when a predetermined quantity of liquid has been dispensed from the container which is less than the total amount of liquid in the container.
The method is for administering a drug in an intravenous liquid from a source of intravenous liquid to a patient by the use of the container having an inlet and an outlet with a piston slidably mounted in the container and a stem secured to the piston and extending out of the container. A predetermined amount of the intravenous liquid is provided in the container and a drug is mixed into the liquid in the container. The liquid with the drug therein is then dispensed to the patient through the outlet. An alarm is initiated when a predetermined amount less than the total amount of the liquid in the container has been dispensed to the patient to provide a pre-alarm.
REFERENCES:
patent: 1410530 (1922-03-01), Larche
patent: 2761445 (1956-09-01), Cherkin
patent: 2865371 (1958-12-01), Dorbecker et al.
patent: 3425415 (1969-02-01), Gordon et al.
patent: 3543752 (1970-12-01), Hesse et al.
patent: 3884228 (1975-05-01), Hahn
patent: 3965897 (1976-06-01), Lundquist
Truluck Dalton L.
Valleylab
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