An asymmetric dialysis tube as an integrated part of a pressure-monitoring sensor
2001 (English)In: Technology and Health Care, ISSN 0928-7329, Vol. 9, no 5, 417-425 p.Article in journal (Refereed) Published
A sensor has been designed consisting of a tube holder with a force transducer and a tube with a modified cross-section. The holder has a lid that encloses the tube. By having a stiff holder and a compliant tube, the idea is that the intraluminal pressure in the tube can be obtained from the measured force. The method is intended for non-invasive pressure measurements in blood or dialysate tubes.
We have used a tube cross-sectional geometry where the outer surface is elliptic and the inner surface is circular with a relation of 2:1 between the thinnest and thickest tube sides. The pressure transducer system shows a linear relationship between the applied pressure and the sensor output (r = 0.999). Within the temperature range, 32°–36°C, which corresponds to the blood and dialysate temperatures, the sensor accuracy is within ±0.8 kPa (±6 mm Hg). This indicates that the sensor should be clinically useful during dialysis and similar applications.
Place, publisher, year, edition, pages
2001. Vol. 9, no 5, 417-425 p.
Non-invasive pressure sensor, asymmetric tube, dialysis, extracorporeal tube, profile analysis
Medical and Health Sciences
IdentifiersURN: urn:nbn:se:liu:diva-29584Local ID: 14961OAI: oai:DiVA.org:liu-29584DiVA: diva2:250401