An evaluation of exhaled flow measuring mouthpieces for breath sampling devices

Author

de Silva, Geethanga ; Beyette, Fred R.

Author_Institution

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

fYear

2014

fDate

26-30 Aug. 2014

Firstpage

5768

Lastpage

5771

Abstract

A study is conducted to determine the dimensions of an exhaled flow measuring mouthpiece for a breath-sampling device that requires breathing for an extended period of time. Fleisch, Pitot and Venturi type differential pressure based flow measuring mouthpieces of various dimensions are evaluated. Inner diameters (IDs) of the cylinder shaped Fleisch, Pitot and Venturi mouthpieces are varied from 5mm to 25mm. Based on the study, we conclude IDs ranging from 8.75mm to 12.5mm for Fleisch type, IDs ranging from 10mm to 12.5mm for Pitot type and ID of 10mm for Venturi type are the most suitable dimensions for a breath sampling device.

Keywords

biomedical equipment; biomedical measurement; pneumodynamics; Fleisch mouthpiece; Pitot mouthpiece; Venturi mouthpiece; breath sampling device; cylinder shaped mouthpiece; differential pressure mouthpiece; exhaled flow measuring mouthpiece; inner diameter; size 10 mm to 12.5 mm; size 5 mm to 25 mm; size 8.75 mm to 12.5 mm; Distance measurement; Electron tubes; Fluid flow measurement; Ports (Computers); Pressure measurement; Standards; Three-dimensional displays;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society (EMBC), 2014 36th Annual International Conference of the IEEE

Conference_Location

Chicago, IL

ISSN

1557-170X

Type

conf

DOI

10.1109/EMBC.2014.6944938

Filename

6944938