Fuss, Franz Konstantin and Ahmad, Asliza and Tan, Adin Ming and Razman, Rizal Mohd and Weizman, Yehuda (2021) Pressure sensor system for customized scoliosis braces. Sensors, 21 (4). ISSN 1424-8220, DOI https://doi.org/10.3390/s21041153.
Full text not available from this repository.Abstract
Hard-shell thoracolumbar sacral orthoses (TLSOs) are used for treating idiopathic scoliosis, a deformation of the spine with a sideways curvature. The pressure required inside the TLSO for ideal corrective results remains unclear. Retrofitting TLSOs with commercially available pressure measurement systems is expensive and can only be performed in a laboratory. The aim of this study was to develop a cost-effective but accurate pressure sensor system for TLSOs. The sensor was built from a piezoresistive polymer, placed between two closed-cell foam liners, and evaluated with a material testing machine. Because foams are energy absorbers, the pressure-conductance curve was affected by hysteresis. The sensor was calibrated on a force plate with the transitions from loading to unloading used to establish the calibration curve. The root mean square error was 12% on average within the required pressure range of 0.01-0.13 MPa. The sensor reacted to the changing pressure during breathing and different activities when tested underneath a chest belt at different tensions. The peak pressure reached 0.135 MPa. The sensor was further tested inside the scoliosis brace during different activities. The measured pressure was 0.014-0.124 MPa. The results from this study enable cheaper and mobile systems to be used for clinical studies on the comfort and pressure of braces during daily activities.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Pressure sensor; Scoliosis brace; Foam properties; Hysteresis; Calibration; Cost-effective development |
| Subjects: | Q Science > QD Chemistry R Medicine > RC Internal medicine > RC1200 Sports Medicine T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Faculty of Sports and Exercise Science (formerly known as Centre for Sports & Exercise Sciences) |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 22 Jul 2022 08:11 |
| Last Modified: | 22 Jul 2022 08:11 |
| URI: | http://eprints.um.edu.my/id/eprint/28094 |
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