College - Author 1

College of Engineering

Department - Author 1

Biomedical Engineering Department

Degree Name - Author 1

BS in Biomedical Engineering

College - Author 2

College of Engineering

Department - Author 2

Biomedical Engineering Department

Degree - Author 2

BS in Biomedical Engineering



Primary Advisor

Michael Whitt, College of Engineering, Biomedical Engineering Department

Additional Advisors

Sam Slishman, Sponsor


The goal of this project was to design a device that would measure pressure gradient data across the width of an elastic and inelastic tourniquet cuff using a human limb model. The main customer requirements that were focused on were to accurately measure the pressure from a tourniquet, keep the cost down, and be easy to use. The targeted design specifications were to read pressure values ranging from 0-400 mmHg, keep the test length under 5 minutes, and to keep the cost of materials under $400. The design of the device ended up consisting of 5 IV pouches that were custom sealed with an impulse heat sealer and connected to 5 Deltran DPT-100 pressure transducers. When wrapped around with either a CAT, SAM XT, M2 Ratchet, SOF T, Slishman Wrap, and SWAT T tourniquet to apply pressure, the transducers would send the information from the BIO-PAK MP160 and DA100C amplifiers to the software used to collect the data on the computer. The data would then be translated manually and plotted on graphs to interpret the pressure gradient curves. The data from the tests showed an increase of pressure near the center of the elastic tourniquets, while inelastic tourniquets experienced higher pressures near the edges of the cuff. A high amount of variability with the pressures produced by the elastic tourniquets were found when wrapping them widely across the limb. The collected data indicated that the device successfully determined the pressure gradient curves for various different elastic and inelastic tourniquets.