US 5,431,174 A · Method of fluid delivery and collection

Abstract

A method of using a multi-compartment fluid assembly for calibrating an apparatus external to the assembly, while conveniently maintaining sterility. The method includes providing calibration fluid in a closed calibration container disposed within a bag that includes a connector for conveying fluids between the interior of the bag and a conventional intravascular tube. In use, fluids may be directed through the external apparatus and the intravascular tube and into the bag's interior. At an appropriate time, the calibration container is opened and the calibration fluid is withdrawn from the container to the intravascular tube, through the connector, without mixing the calibration fluid with any fluids in a remaining volume of the bag. Subsequently, the calibration fluid is transferred from the intravascular tube to the bag's interior, again through the connector.

Claims7

Dependent claims

A method of using a multi-compartment fluid assembly for calibrating an apparatus external to the assembly, comprising:

providing a calibration fluid in a closed calibration container disposed within a bag, the bag having a connector for fluid communication between the interior of the bag and a conventional intravascular tube;
opening the calibration container;
withdrawing the calibration fluid from the calibration container to the intravascular tube through the connector, without mixing the calibration fluid with any fluids in a remaining volume of the bag;
and
subsequently transferring the calibration fluid from the intravascular tube to the bag's interior, through the connector.

2 more elements

A method of using a multi-compartment fluid assembly for calibrating an infusion fluid delivery and blood chemistry analysis system connected to a fluid source containing infusion fluid, the system having a pump, an intravascular tube with a connector, and an electrode array for measuring characteristics of blood entering the system, comprising:

providing a calibration fluid in a closed calibration container disposed within a bag, the bag having a connector for fluid communication between the interior and the exterior of the bag;
mating the intravascular tube's connector with the bag's connector;
pumping the infusion fluid from the fluid source through the intravascular tube and the electrode array;
transferring the infusion fluid from the intravascular tube to the bag's interior, through the mated connectors of the intravascular tube and the bag;
opening the calibration container;
withdrawing the calibration fluid from the calibration container to the intravascular tube through the mated connectors of the intravascular tube and the bag, without mixing the calibration fluid with the infusion fluid in the bag;
calibrating the electrode array with the calibration fluid;
and
subsequently transferring the calibration fluid from the intravascular tube to the bag's interior, through the mated connectors of the intravascular tube and the bag.

6 more elements

Dependencies are inferred from the claim text.

Method of fluid delivery and collection

Life of this patent

Method of fluid delivery and collection

Life of this patent

Abstract

Claims7