Title :
A device to measure inhalation with a powder inhaler
Author :
Fagerström, Per-Olof ; Wendel, Thomas ; Berggren, Lennart ; Nilsson, Goran
Author_Institution :
AB Draco, Lund, Sweden
Abstract :
A spirometer using a Turbuhaler dry powder inhaler as a flow head was designed. Using a single-board computer to calculate inhalation parameters and to control the user interface and auto-zeroing of the pressure transducer simplified the construction. The nonlinear relationship between pressure drop over the flow head and flow was linearized using a table in ROM. The resolution obtained was 2% at 5 L/min and 0.2% at 100 L/min. The equipment was found easy to use during clinical tests
Keywords :
biomedical equipment; biomedical measurement; flow measurement; pneumodynamics; Turbuhaler dry powder inhaler; clinical tests; flow head; inhalation measurement device; inhalation parameters calculation; nonlinear relationship; pressure transducer auto-zeroing; single-board computer; spirometer; user interface; Computer interfaces; Drugs; Fluid flow measurement; Powders; Pressure control; Read only memory; Research and development; Testing; Transducers; User interfaces;
Conference_Titel :
Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in
Conference_Location :
Seattle, WA
DOI :
10.1109/IEMBS.1989.96551
