Design and development of an automated metered dose inhaler (MDI) for asthmatic patient
To date, infant with illness associated with the pulmonary airway is treated by a doctor using a spacer device with metered dose inhaler (MDI) to allow the infant to breathe in the medication known as salbutamol. Current asthma spacer does not provide systematic way of monitoring and displaying t...
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| Main Author: | |
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| Format: | Thesis |
| Language: | English English English |
| Published: |
2018
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/2149/1/24p%20TSEN%20VUI%20HIN.pdf http://eprints.uthm.edu.my/2149/2/TSEN%20VUI%20HIN%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/2149/3/TSEN%20VUI%20HIN%20WATERMARK.pdf |
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| Summary: | To date, infant with illness associated with the pulmonary airway is treated by a doctor
using a spacer device with metered dose inhaler (MDI) to allow the infant to breathe in
the medication known as salbutamol. Current asthma spacer does not provide systematic
way of monitoring and displaying the percentage value of the propellant. Furthermore,
user non-compliance is found to contribute towards longer recovery rate. Therefore, this
product is designed and developed capable of detecting the propellant level inhaled by the
infant by using a MQ-6 gas sensor and monitoring its percentage value. The display of
available puffs of MDI canister and the battery indicator for the system are also included
in the device. The automated actuation MDI was required a push button to press the MDI
canister where this project utilised Arduino Nano as the microcontroller to control the
system operation and all the reading values will be displayed on the OLED. RGB LED is
also used to visualise the propellant level. The obtained results of the detection of
propellant in voltage from the MQ-6 gas sensors were analysed in MATLAB to make
comparison through the obtained results. Without propellant, voltage recorded is
0.640±0.024V whereas high concentration of propellant displayed voltage of
1.126±0.020V. The mean standard error rate of propellant detection is 5.584%. The first
design of the actuation device and interface monitoring display of automated MDI were
recorded the highest percentage which is 75% and 80%. The concentration of propellant
depends on the ambient temperature due to the MQ-6 gas sensor required minimum
working temperature between 20
C. The mean weight of the MDI canister for
each puff is 6.257mg and the standard deviation is 3.629mg. Due to experiment conducted,
the speed and pressure of pressing MDI canister causes variability in the released of
salbutamol and propellant. Observation proved that ambient temperature and propellant
released amount also influenced the final reading from the automated actuation MDI.
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