A smart orthopedic compression device based on a polymeric stress memory actuator

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

12 Scopus Citations
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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)222-229
Journal / PublicationMaterials and Design
Volume97
Online published23 Feb 2016
Publication statusPublished - 5 May 2016
Externally publishedYes

Abstract

In current practice of compression therapy, there has been a challenge of compression controlling and need for multiple devices to achieve different functions. Herein, the potential of a thermal-sensitive memory polymer, namely, polyurethane (MPU), is explored in designing a prototype that acts as a flexible bandage system to provide dual benefits (heat and pressure) simultaneously for a desired compression. After preconditioning, the thermomechanical behavior of the MPU becomes repeatable and consistent, which can be programmed to remember (store) and retrieve reversibly a prescribed internal stress, responsive to an external stimulus around its transition temperature (Ttrans). The smart bandage system is then built using the MPU actuator which integrates electric resistive wires as both a heat source for thermal therapy and stimulus for trigger control. The compression can also be easily switched between static and dynamic (massage) modes using a pro-set thermal stimulus. This paper also addresses several challenging issues and design considerations for the prototype. Theoretical analyses have been applied to predict the device performance, showing excellent agreement with experimental results. This work sheds insights for broadening the applications of stress memory and for engineering smart products needing stimulus responsive forces such as dynamic cushions, pressure garment and electronic actuators.

Research Area(s)

  • Bandage, Compression therapy, Massaging, Polyurethane, Pressure, Shape memory polymer, Stress memory, Venous disorders

Citation Format(s)

A smart orthopedic compression device based on a polymeric stress memory actuator. / Kumar, Bipin; Hu, Jinlian; Pan, Ning; Narayana, Harishkumar.

In: Materials and Design, Vol. 97, 05.05.2016, p. 222-229.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal