撑杆
压力传感器
脊柱侧凸
改装
校准
压力测量
曲率
材料科学
结构工程
生物医学工程
机械工程
工程类
外科
医学
物理
几何学
量子力学
数学
作者
Franz Konstantin Fuss,Asliza Ahmad,Adin Ming Tan,Rizal Razman,Yehuda Weizman
出处
期刊:Sensors
[MDPI AG]
日期:2021-02-06
卷期号:21 (4): 1153-1153
被引量:14
摘要
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.
科研通智能强力驱动
Strongly Powered by AbleSci AI