Title :
Pressure sensed non-invasively directly on the extra corporeal bloodline tube
Author :
Andersson, Rasmus ; Loyd, D. ; Ask, P.
Author_Institution :
Dept. of Biomed. Eng., Linkoping Univ., Sweden
Abstract :
To clinically measure blood pressure at extra corporeal bloodlines involves a hazard due to the infection risk and a risk for thrombosis formation. The aim was to design a non-invasive pressure sensor, measuring directly on a tube section. A modified tube cross-section was used to improve sensitivity. Using the developed sensing principle, a consistent relation (r=0.999) was obtained between pressure and output signal. The output was stable and an acceptable drift within the temperature-range. The method shows great promise for applications in monitoring of the dialysis process.
Keywords :
blood pressure measurement; patient monitoring; patient treatment; pressure sensors; airtrap; clinical treatment modalities; consistent relation; developed sensing principle; dialysis process monitoring; external pressure transducer; extracorporeal bloodline tube; output signal; relief pumping; thrombosis formation; tube cross-section design; Aluminum; Biomedical measurements; Blood; Force measurement; Force sensors; Mechanical sensors; Patient monitoring; Pressure measurement; Sensor phenomena and characterization; Transducers;
Conference_Titel :
Engineering in Medicine and Biology Society, 2001. Proceedings of the 23rd Annual International Conference of the IEEE
Print_ISBN :
0-7803-7211-5
DOI :
10.1109/IEMBS.2001.1019497
