3D direct printing of silicone meniscus implant using a novel heat-cured extrusion-based printer

The first successful direct 3D printing, or additive manufacturing (AM), of heat-cured silicone meniscal implants, using biocompatible and bio-implantable silicone resins is reported. Silicone implants have conventionally been manufactured by indirect silicone casting and molding methods which are e...

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Main Authors: Luis, Eric, Pan, Matthew Houwen, Sing, Swee Leong, Bajpai, Ram, Song, Juha, Yeong, Wai Yee
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2020
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Online Access:https://hdl.handle.net/10356/145383
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1453832020-12-26T20:11:32Z 3D direct printing of silicone meniscus implant using a novel heat-cured extrusion-based printer Luis, Eric Pan, Matthew Houwen Sing, Swee Leong Bajpai, Ram Song, Juha Yeong, Wai Yee School of Mechanical and Aerospace Engineering School of Chemical and Biomedical Engineering Lee Kong Chian School of Medicine (LKCMedicine) Singapore Centre for 3D Printing Engineering 3D Printing Meniscus Implant The first successful direct 3D printing, or additive manufacturing (AM), of heat-cured silicone meniscal implants, using biocompatible and bio-implantable silicone resins is reported. Silicone implants have conventionally been manufactured by indirect silicone casting and molding methods which are expensive and time-consuming. A novel custom-made heat-curing extrusion-based silicone 3D printer which is capable of directly 3D printing medical silicone implants is introduced. The rheological study of silicone resins and the optimization of critical process parameters are described in detail. The surface and cross-sectional morphologies of the printed silicone meniscus implant were also included. A time-lapsed simulation study of the heated silicone resin within the nozzle using computational fluid dynamics (CFD) was done and the results obtained closely resembled real time 3D printing. Solidworks one-convection model simulation, when compared to the on-off model, more closely correlated with the actual probed temperature. Finally, comparative mechanical study between 3D printed and heat-molded meniscus is conducted. The novel 3D printing process opens up the opportunities for rapid 3D printing of various customizable medical silicone implants and devices for patients and fills the current gap in the additive manufacturing industry. National Research Foundation (NRF) Published version This research is supported by the National Research Foundation, Prime Minister’s Office, Singapore under its Medium-Sized Center Funding scheme and the NTU Start-Up Grant. 2020-12-21T01:47:51Z 2020-12-21T01:47:51Z 2020 Journal Article Luis, E., Pan, M. H., Sing, S. L., Bajpai, R., Song, J., & Yeong, W. Y. (2020). 3D direct printing of silicone meniscus implant using a novel heat-cured extrusion-based printer. Polymers, 12(5), 1031-. doi:10.3390/polym12051031 2073-4360 https://hdl.handle.net/10356/145383 10.3390/polym12051031 32370046 5 12 1031 en Polymers © 2020 by the Authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering
3D Printing
Meniscus Implant
spellingShingle Engineering
3D Printing
Meniscus Implant
Luis, Eric
Pan, Matthew Houwen
Sing, Swee Leong
Bajpai, Ram
Song, Juha
Yeong, Wai Yee
3D direct printing of silicone meniscus implant using a novel heat-cured extrusion-based printer
description The first successful direct 3D printing, or additive manufacturing (AM), of heat-cured silicone meniscal implants, using biocompatible and bio-implantable silicone resins is reported. Silicone implants have conventionally been manufactured by indirect silicone casting and molding methods which are expensive and time-consuming. A novel custom-made heat-curing extrusion-based silicone 3D printer which is capable of directly 3D printing medical silicone implants is introduced. The rheological study of silicone resins and the optimization of critical process parameters are described in detail. The surface and cross-sectional morphologies of the printed silicone meniscus implant were also included. A time-lapsed simulation study of the heated silicone resin within the nozzle using computational fluid dynamics (CFD) was done and the results obtained closely resembled real time 3D printing. Solidworks one-convection model simulation, when compared to the on-off model, more closely correlated with the actual probed temperature. Finally, comparative mechanical study between 3D printed and heat-molded meniscus is conducted. The novel 3D printing process opens up the opportunities for rapid 3D printing of various customizable medical silicone implants and devices for patients and fills the current gap in the additive manufacturing industry.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Luis, Eric
Pan, Matthew Houwen
Sing, Swee Leong
Bajpai, Ram
Song, Juha
Yeong, Wai Yee
format Article
author Luis, Eric
Pan, Matthew Houwen
Sing, Swee Leong
Bajpai, Ram
Song, Juha
Yeong, Wai Yee
author_sort Luis, Eric
title 3D direct printing of silicone meniscus implant using a novel heat-cured extrusion-based printer
title_short 3D direct printing of silicone meniscus implant using a novel heat-cured extrusion-based printer
title_full 3D direct printing of silicone meniscus implant using a novel heat-cured extrusion-based printer
title_fullStr 3D direct printing of silicone meniscus implant using a novel heat-cured extrusion-based printer
title_full_unstemmed 3D direct printing of silicone meniscus implant using a novel heat-cured extrusion-based printer
title_sort 3d direct printing of silicone meniscus implant using a novel heat-cured extrusion-based printer
publishDate 2020
url https://hdl.handle.net/10356/145383
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