Silicone elastomeric-based materials of soft pneumatic actuator for lower-limb rehabilitation: Finite element modelling and prototype experimental validation

This study describes the basic design, material selection, fabrication, and evaluation of soft pneumatic actuators (SPA) for lower-limb rehabilitation compression therapy. SPAs can be a promising technology in proactive pressure delivery, with a wide range of dosages for treating venous-related dise...

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Main Authors: Bakeri, Hanisah, Hasikin, Khairunnisa, Abd Razak, Nasrul Anuar, Rizal, Mohd Razman, Khamis, Abd Alghani, Annuha, Muhammad Ammar, Tajuddin, Abbad, Reza, Darween
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Published: MDPI 2023
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Online Access:http://eprints.um.edu.my/38484/
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spelling my.um.eprints.384842024-07-15T08:21:08Z http://eprints.um.edu.my/38484/ Silicone elastomeric-based materials of soft pneumatic actuator for lower-limb rehabilitation: Finite element modelling and prototype experimental validation Bakeri, Hanisah Hasikin, Khairunnisa Abd Razak, Nasrul Anuar Rizal, Mohd Razman Khamis, Abd Alghani Annuha, Muhammad Ammar Tajuddin, Abbad Reza, Darween QH301 Biology Medical technology T Technology (General) This study describes the basic design, material selection, fabrication, and evaluation of soft pneumatic actuators (SPA) for lower-limb rehabilitation compression therapy. SPAs can be a promising technology in proactive pressure delivery, with a wide range of dosages for treating venous-related diseases. However, the most effective design and material selection of SPAs for dynamic pressure delivery have not been fully explored. Therefore, a SPA chamber with two elastomeric layers was developed for this study, with single-side inflation. The 3D deformation profiles of the SPA chamber using three different elastomeric rubbers were analyzed using the finite element method (FEM). The best SPA-compliant behavior was displayed by food-grade silicone A10 Shore with a maximum deformation value of 25.34 mm. Next, the SPA chamber was fabricated using A10 Shore silicone and experimentally validated. During the simulation in FEM, the air pressure was applied on the inner wall of the chamber (i.e., the affected area). This is to ensure the applied pressure was evenly distributed in the inner wall while the outer wall of the chamber remained undeformed for all compression levels. During the inflation process, pressure will be applied to the SPA chamber, causing exerted pressure on the skin which is then measured for comparison. The simulation and experimental results show an excellent agreement of pressure transmission on the skin for the pressure range of 0-120 mmHg, as depicted in the Bland-Altman plots. The findings exhibited promising results in the development of the SPA chamber using low-cost and biocompatible food-grade silicone. MDPI 2023-03 Article PeerReviewed Bakeri, Hanisah and Hasikin, Khairunnisa and Abd Razak, Nasrul Anuar and Rizal, Mohd Razman and Khamis, Abd Alghani and Annuha, Muhammad Ammar and Tajuddin, Abbad and Reza, Darween (2023) Silicone elastomeric-based materials of soft pneumatic actuator for lower-limb rehabilitation: Finite element modelling and prototype experimental validation. Applied Sciences-Basel, 13 (5). ISSN 2076-3417, DOI https://doi.org/10.3390/app13052977 <https://doi.org/10.3390/app13052977>. 10.3390/app13052977
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic QH301 Biology
Medical technology
T Technology (General)
spellingShingle QH301 Biology
Medical technology
T Technology (General)
Bakeri, Hanisah
Hasikin, Khairunnisa
Abd Razak, Nasrul Anuar
Rizal, Mohd Razman
Khamis, Abd Alghani
Annuha, Muhammad Ammar
Tajuddin, Abbad
Reza, Darween
Silicone elastomeric-based materials of soft pneumatic actuator for lower-limb rehabilitation: Finite element modelling and prototype experimental validation
description This study describes the basic design, material selection, fabrication, and evaluation of soft pneumatic actuators (SPA) for lower-limb rehabilitation compression therapy. SPAs can be a promising technology in proactive pressure delivery, with a wide range of dosages for treating venous-related diseases. However, the most effective design and material selection of SPAs for dynamic pressure delivery have not been fully explored. Therefore, a SPA chamber with two elastomeric layers was developed for this study, with single-side inflation. The 3D deformation profiles of the SPA chamber using three different elastomeric rubbers were analyzed using the finite element method (FEM). The best SPA-compliant behavior was displayed by food-grade silicone A10 Shore with a maximum deformation value of 25.34 mm. Next, the SPA chamber was fabricated using A10 Shore silicone and experimentally validated. During the simulation in FEM, the air pressure was applied on the inner wall of the chamber (i.e., the affected area). This is to ensure the applied pressure was evenly distributed in the inner wall while the outer wall of the chamber remained undeformed for all compression levels. During the inflation process, pressure will be applied to the SPA chamber, causing exerted pressure on the skin which is then measured for comparison. The simulation and experimental results show an excellent agreement of pressure transmission on the skin for the pressure range of 0-120 mmHg, as depicted in the Bland-Altman plots. The findings exhibited promising results in the development of the SPA chamber using low-cost and biocompatible food-grade silicone.
format Article
author Bakeri, Hanisah
Hasikin, Khairunnisa
Abd Razak, Nasrul Anuar
Rizal, Mohd Razman
Khamis, Abd Alghani
Annuha, Muhammad Ammar
Tajuddin, Abbad
Reza, Darween
author_facet Bakeri, Hanisah
Hasikin, Khairunnisa
Abd Razak, Nasrul Anuar
Rizal, Mohd Razman
Khamis, Abd Alghani
Annuha, Muhammad Ammar
Tajuddin, Abbad
Reza, Darween
author_sort Bakeri, Hanisah
title Silicone elastomeric-based materials of soft pneumatic actuator for lower-limb rehabilitation: Finite element modelling and prototype experimental validation
title_short Silicone elastomeric-based materials of soft pneumatic actuator for lower-limb rehabilitation: Finite element modelling and prototype experimental validation
title_full Silicone elastomeric-based materials of soft pneumatic actuator for lower-limb rehabilitation: Finite element modelling and prototype experimental validation
title_fullStr Silicone elastomeric-based materials of soft pneumatic actuator for lower-limb rehabilitation: Finite element modelling and prototype experimental validation
title_full_unstemmed Silicone elastomeric-based materials of soft pneumatic actuator for lower-limb rehabilitation: Finite element modelling and prototype experimental validation
title_sort silicone elastomeric-based materials of soft pneumatic actuator for lower-limb rehabilitation: finite element modelling and prototype experimental validation
publisher MDPI
publishDate 2023
url http://eprints.um.edu.my/38484/
_version_ 1805881108541210624
score 13.209306