05097122 is referenced by 303 patents and cites 3 patents.

An optical motion sensor is provided for monitoring movement of a mechanical device, particularly such as an infusion pump of the type used for controlled delivery of medication to a patient. The motion sensor includes a disk member mounted upon a selected mechanical output component driven by the infusion pump, such that the disk member undergoes displacement during normal pump operation. The disk member defines a pattern of reflective and substantially nonreflective surface zones which are alternately illuminated by a light source during normal pump operation. A light detector responds to the level of reflection from the disk member to provide an output signal which varies according to disk member displacement. This output signal is connected to a controller for comparison with drive signals supplied to the infusion pump, to verify proper mechanical output operation of the pump.

Title
Medication infusion system having optical motion sensor to detect drive mechanism malfunction
Application Number
7/509936
Publication Number
5097122
Application Date
April 16, 1990
Publication Date
March 17, 1992
Inventor
Richard E Purvis
Glendale
CA, US
Fredric C Colman
Granada Hills
CA, US
Agent
Stuart O Lowry
Leslie S Miller
Assignee
Pacesetter Infusion
CA, US
IPC
G01D 5/34
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