Patent Number: 6,254,572

Title: Medical fluid injector having watchdog circuit

Abstract: A medical fluid injector includes: an air detection system for detecting air in the neck of the syringe; a hand-operated control lever for controlling movement of the injector ram; magnetic conductors for delivering magnetic fields from a power head face plate to an internal circuit board to permit detection of different face plates; a tilt sensor detecting the tilt angle of the power head to control the speed of motion brought about by the hand-operated control lever and to control an invertible display; and a monitor microcontroller for monitoring the behavior of the central processing unit to detect and react to error conditions.

Inventors: Knipfer; James E. (Ft. Wright, KY), Stern; Mitchell G. (Centerville, OH)

Assignee: Liebel Flarsheim Company

International Classification: A61M 5/145 (20060101); A61M 5/36 (20060101); A61M 001/00 ()

Expiration Date: 07/03/2018