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Instrument- Mounted Pressure-Sensing System For Surgical Applications

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Title:Instrument- Mounted Pressure-Sensing System For Surgical Applications
Authors:Lum, Isaac
Contributors:Electrical Engineering (department)
Date Issued:Aug 2017
Publisher:University of Hawaiʻi at Mānoa
Abstract:Pressurized liquid may be utilized during an operation to inflate or clean a
bodily cavity. If high pressures are sustained within the body, bodily injury may
occur. This thesis discusses a system designed for physicians for monitoring internal
fluid pressures as a physiological measurement. The pressure data is taken though a
disposable, instrument-mounted, piezoresistive FlexiForce sensor, and
measurements are displayed to the physician in real-time. The physician can then
opt to receive alerts when an excessive pressure has been reached, to help avoid
post-surgical complications. A linear pressure-voltage calibration procedure was
developed using carefully measured deadweights, and a liquid-environment
simulation device. Repeatability, hysteresis, reproducibility, linearity, and
temperature-dependency tests were performed to characterize performance and
determine the viability of such a system. The system was determined to be a good
candidate for further experimentation, with a typical measurement error of ± 4.5%.
Description:M.S. Thesis. University of Hawaiʻi at Mānoa 2017.
Rights:All UHM dissertations and theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission from the copyright owner.
Appears in Collections: M.S. - Electrical Engineering

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