Inventors:
Nigel Wright - California PA, US
Jeremy Thomas Harbaugh - Cranberry Twp PA, US
Michael John Zang - Allison Park PA, US
Joseph Stephen Beri - Gibsonia PA, US
Douglas Mark Zatezalo - Allison Park PA, US
Tom Monahan - Cranberry Twp PA, US
Ronald Robert Fox - Glenshaw PA, US
International Classification:
A61M 1/14, G01N 29/02
Abstract:
This disclosure relates to detecting fluid in medical tubing. In certain aspects, a method is performed by a data processing apparatus. The method includes controlling repetitive activation of the ultrasonic transmitter. The method also includes receiving a signal from the ultrasonic receiver during an activation of the ultrasonic transmitter. The method also includes determining that fluid is absent or present in a portion of the medical fluid tube based on a comparison between the signal and a threshold value.