Israeli-founded startup ART Medical has developed sensor-based smart tubes to monitor ICU patients on intubation, intravenous feeding and catheters.  They can detect and alert nurses and physicians of pneumonia or any abnormalities with gastric reflux, saliva, urine output etc.

https://www.timesofisrael.com/israeli-startup-creates-sensor-based-tubes-for-better-patient-monitoring/

http://www.globes.co.il/en/article-art-medical-seeks-to-make-hospitals-safer-1001191870