Modelling the shape memory properties of 4D printed polylactic acid (PLA) for application of disk spacer in minimally invasive spinal fusion

Nindya Aprilia Alief, Sugeng Supriadi, Yudan Whulanza

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Citations (Scopus)

Abstract

One of surgical treatments for relieving low back pain, which is caused by a functional degradation of lumbar disc, can be done by spinal fusion such as Minimally Invasive Transforaminal Lumbar Interbody Fusion (MIx-TLIF) technique. This technique provides stabilization for the spinal vertebrae and the disc or shock absorber between vertebrae. TLIF surgery is done by inserting interbody spacer and bone graft to the lumbar disc through a minimum incision. Here, we fabricated the disk spacer using 4D printing technology. This new technology uses 3D printing to print parts with the ability to change shape over time when exposed to different external stimuli i.e. heat. In order to obtain the right shape transformation, the expansion and thermal distribution of 4D printed polylactic acid model were investigated. It is indicated that specific PLA structure possesses thermal shape memory behavior that can be thermomechanically trained into temporary shape and return to their permanent shape when heated.

Original languageEnglish
Title of host publication3rd Biomedical Engineering''s Recent Progress in Biomaterials, Drugs Development, and Medical Devices
Subtitle of host publicationProceedings of the International Symposium of Biomedical Engineering, ISBE 2018
EditorsPraswasti P.D.K. Wulan, Misri Gozan, Sotya Astutiningsih, Ghiska Ramahdita, Radon Dhelika, Prasetyanugraheni Kreshanti
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735418226
DOIs
Publication statusPublished - 9 Apr 2019
Event3rd International Symposium of Biomedical Engineering''s Recent Progress in Biomaterials, Drugs Development, and Medical Devices, ISBE 2018 - Jakarta, Indonesia
Duration: 6 Aug 20188 Aug 2018

Publication series

NameAIP Conference Proceedings
Volume2092
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference3rd International Symposium of Biomedical Engineering''s Recent Progress in Biomaterials, Drugs Development, and Medical Devices, ISBE 2018
CountryIndonesia
CityJakarta
Period6/08/188/08/18

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