초록 ▼

A safety system for battery-operated, microprocessor-controlled infusion pumps using separate primary and reserve batteries. When the primary battery nears exhaustion, the reserve battery is switched in and an interval timer is started, but the pump operation is not interfered with. At the expiratio

A safety system for battery-operated, microprocessor-controlled infusion pumps using separate primary and reserve batteries. When the primary battery nears exhaustion, the reserve battery is switched in and an interval timer is started, but the pump operation is not interfered with. At the expiration of the timer interval, the pump is switched to a KVO mode to keep it in minimal operation as long as possible. When the reserve battery also nears exhaustion, the microprocessor is signalled to perform an orderly shutdown routine while battery power is still available. Audible alarms may be provided to apprise nursing personnel of the various phases in the system\s operation.

대표청구항 ▼

The method of providing operational safety for a variable-speed, battery operated infusion pump, comprising the steps of: (a) operating said pump at normal operating speed substantially above the KVO speed in a primary mode wherein said pump is powered by a primary battery, as long as the primary ba

The method of providing operational safety for a variable-speed, battery operated infusion pump, comprising the steps of: (a) operating said pump at normal operating speed substantially above the KVO speed in a primary mode wherein said pump is powered by a primary battery, as long as the primary battery voltage remains above a predetermined threshold level; (b) operating said pump at normal operating speed in a reserve mode wherein said pump is powered at least by a reserve battery for a predetermined time interval after said primary battery voltage drops below said threshold; (c) operating said pump at said KVO speed under reserve battery power following said interval.