Block Medical, Inc.

Baxter International Inc.

Russell C Barton

Maresala Milo

Gregory E Sancoff

Howard S Barr

Edward T Cordner, Jr

Mark McWilliams

Charles N Bunn

The present invention provides a cost-effective, accurate use of multiple batteries in a battery pack,. The battery pack,consisting a plurality of battery cells,. A monitoring circuit,is provided that monitors the battery cells,. The monitoring circuit,is connected to a microprocessor,through an analog-to-digital converter,. The microprocessor,determines the amount of voltage remaining in the battery cells,. The microprocessor,also monitors the voltage output from the battery pack,. When the voltage being supplied by the battery pack,falls below a threshold value, a switching circuit,switches depleted battery cells,with charged battery cells,.

Battery control circuit

A multiple dose infusion controller for controlling the delivery of multiple dosages of an intravenous fluid from a source to a site comprises a compact, portable housing having a slot for removably receiving a segment of a disposable tubing connected to an IV source for transporting an IV fluid to a site, a valve member mounted in the housing for periodically engaging and compressing the tubing for closing the tubing for preventing flow of fluid therethrough, a motor in the housing for driving the valve member upon energization to selected open and closed positions, and controls in the housing for periodically energizing the motor for selectively controlling the flow of the fluid through the tubing in accordance with predetermined delivery times and duration parameters.

Multiple dose control apparatus

A programmable infusion system includes a disposable IV tubing apparatus for conveying intravenous fluid from a source to a patient. A compact, portable case has a receptacle for removably receiving a segment of the disposable apparatus. A peristaltic pump is mounted in the case for engaging the segment of the disposable apparatus and pumping intravenous fluid therethrough. A motor is mounted in the case and is connected for driving the pump upon energization thereof. A bar code reader is mounted in an edge portion of the case for sensing a bar code label attached to the source of intravenous fluid, such as a bag. The bar code label represents the prescribed fluid delivery parameters. These are read and displayed in alphanumeric form by the system when the edge portion of the case containing the bar code reader is passed over the label. A micro-controller mounted in the case energizes the motor so that the peristaltic pump conveys the fluid through the disposable apparatus in accordance with the delivery rate parameters.

Programmable infusion system

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Carlsbad, CA, United States of America

Russell C Barton