In vitro protocol for validating interface pressure sensors for therapeutic compression garments: Importance of sphygmomanometer placement and initial cuff diameter

  • Inhwa Jung Department of Mechanical Engineering, Kyung Hee University, Yongin, Korea, Republic of.
  • Zhaoqian Xie Department of Civil & Environment Engineering, Northwestern University, Evanston, IL, United States.
  • Qingze Huo Department of Mechanical Engineering, Northwestern University, Evanston, IL, United States.
  • Jongwon Kim Department of Mechanical Engineering, Kyung Hee University, Yongin, Korea, Republic of.
  • Jaehyuk Lee Department of Mechanical Engineering, Kyung Hee University, Yongin, Korea, Republic of.
  • Bowen Ji Department of Mechanical Engineering, Northwestern University, Evanston, IL, USA; Department of Micro/Nano Electronics, Shanghai Jiao Tong University, Shanghai, China.
  • Shuai Xu | stevexu@northwestern.edu Center for Bio-Integrated Electronics, Northwestern University, Evanston, IL, USA; Department of Dermatology, Northwestern University Feinberg School of Medicine, Chicago, IL, United States.

Abstract

An optimal protocol is needed to validate the performance of future interface pressure sensors for compression garments when using a sphygmomanometer. PicoPress® was used on a rigid plastic cylinder (r=4 cm). An FDA-cleared aneroid sphygmomanometer was used to apply pressures from 10-60 mmHg with a diameter of 8 cm or 12 cm placed either beneath the sphygmomanometer’s airbag or fabric cuff. A two-tail t-test was performed (P<0.05 for significance) for all applied pressures. PicoPress® outputs vary with sensor placement (airbag vs fabric cuff) and the initial cuff diameter. Sensor placement overlying the sphygmomanometer’s fabric cuff compared to the airbag led to significantly higher pressures (37%-135%) depending on the cuff diameter size. These differences were nearly all statistically significant (P<0.05). Validation of new interface pressure sensors deploying a sphygmomanometer for calibration should specify the location of sensor placement location and initial diameter with a preference for placement under the airbag.

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Published
2018-02-20
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Original Articles
Supporting Agencies
This work was supported by the Center for Bio-Integrated Electronics of Northwestern University, Northwestern University Pilot Voucher Program (UL1TR001422), and Kyung Hee University (KHU-20150655), John Rogers PhD, Northwestern University
Keywords:
Compression therapy, interface pressure, sensors.
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How to Cite
Jung, I., Xie, Z., Huo, Q., Kim, J., Lee, J., Ji, B., & Xu, S. (2018). In vitro protocol for validating interface pressure sensors for therapeutic compression garments: Importance of sphygmomanometer placement and initial cuff diameter. Veins and Lymphatics, 7(1). https://doi.org/10.4081/vl.2018.7204