A sensing tube with an integrated piezoelectric flow sensor for liver transplantation

Author

Jung, Wooseok ; Li, Chunyan ; Kim, Dong-Sik ; Ahn, Chong H.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Cincinnati, Cincinnati, OH, USA

fYear

2009

fDate

3-6 Sept. 2009

Firstpage

4469

Lastpage

4472

Abstract

An innovative sensing tube with an integrated piezoelectric flow sensor to measure flow rate in portal vein during liver transplantation has been developed and characterized in this work. This smart tube aims to measure flow rates in the portal vein in a real-time continuous format with high reliability. The PVDF-TrFE piezoelectric flow sensor integrated in a tube was able to measure flow rates with the sensitivity of 0.02 mVpp per 20 mL/min in the range of portal vein flow rate. It also showed excellent operational stability for 120 minutes with a standard deviation of 0.084 mVpp. The tube can be used as a clinical tool for assessing the need for portal vein inflow modification during liver transplantation.

Keywords

blood flow measurement; blood vessels; flow sensors; intelligent sensors; liver; piezoelectric devices; flow rate; integrated piezoelectric flow sensor; liver transplantation; operational stability; portal vein; sensing tube; smart tube; time 120 min; Biosensing Techniques; Blood Flow Velocity; Electromagnetic Fields; Equipment Design; Liver Transplantation; Polyvinyls; Portal Vein;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2009. EMBC 2009. Annual International Conference of the IEEE

Conference_Location

Minneapolis, MN

ISSN

1557-170X

Print_ISBN

978-1-4244-3296-7

Electronic_ISBN

1557-170X

Type

conf

DOI

10.1109/IEMBS.2009.5333823

Filename

5333823