An investigation of the performance of NiTi shape memory alloy based bone fixation device

This project has involved design of a new bone fixation device made of NiTi shape memory alloy. Conceptual designs were generated by using Product Design Specification (PDS) and brainstorming methods. The concept evaluation of the conceptual designs has been carried out by means of weighted ob...

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Main Author:	Yong, Thian Haw
Format:	Thesis
Language:	English
Published:	2015
Subjects:	Shape memory alloys Fracture fixation Fracture mechanics - Case studies
Online Access:	http://psasir.upm.edu.my/id/eprint/67809/1/fk%202015%20108%20ir.pdf
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id	my-upm-ir.67809
record_format	uketd_dc
spelling	my-upm-ir.678092019-04-01T01:37:43Z An investigation of the performance of NiTi shape memory alloy based bone fixation device 2015-09 Yong, Thian Haw This project has involved design of a new bone fixation device made of NiTi shape memory alloy. Conceptual designs were generated by using Product Design Specification (PDS) and brainstorming methods. The concept evaluation of the conceptual designs has been carried out by means of weighted objective method and the conceptual design that scores highest was chosen as the best design concept. The concept of Nitinol Stitch was the most suitable for bone fixation device because of large size of fracture coverage and excellent adaptability to bone geometry when compared to other design concepts. The new bone fixation device model was fabricated by using NiTi shape memory alloy as its main constituent. Performance of the newly designed bone fixation device model made of NiTi shape memory alloy was evaluated. Meanwhile, commercial finite element analysis (FEA) software, Abaqus was used to analyze the mechanics of model as well as its behavior, so that the installation process during orthopedic surgery can be simulated. A prototype has been fabricated. Heat test was conducted in laboratory to investigate the actual performance of the prototype. Experimental data were compared to the simulation data for result validation. From simulation, it is found that the gap between two bone fragments has been reduced from 2mm to 0.2mm. However, slipping occurred during experiment, the gap has increased up to 6.54mm. The simulation result was further explored to justify the device’s feasibility. The findings of this research will provide one of the possibilities that can be made to solve shortcomings of a few existing SMA based bone fixation devices as reviewed in literature. The research has led to a conclusion that the newly designed device, Nitinol Stitch, has shown its potential advantages in orthopedics by offering a new alternative in fixing bone fracture. The design and experimental processes throughout the project can be used as a reference for future development of other SMA based bone fixation devices. Shape memory alloys Fracture fixation Fracture mechanics - Case studies 2015-09 Thesis http://psasir.upm.edu.my/id/eprint/67809/ http://psasir.upm.edu.my/id/eprint/67809/1/fk%202015%20108%20ir.pdf text en public masters Universiti Putra Malaysia Shape memory alloys Fracture fixation Fracture mechanics - Case studies
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English
topic	Shape memory alloys Fracture fixation Fracture mechanics - Case studies
spellingShingle	Shape memory alloys Fracture fixation Fracture mechanics - Case studies Yong, Thian Haw An investigation of the performance of NiTi shape memory alloy based bone fixation device
description	This project has involved design of a new bone fixation device made of NiTi shape memory alloy. Conceptual designs were generated by using Product Design Specification (PDS) and brainstorming methods. The concept evaluation of the conceptual designs has been carried out by means of weighted objective method and the conceptual design that scores highest was chosen as the best design concept. The concept of Nitinol Stitch was the most suitable for bone fixation device because of large size of fracture coverage and excellent adaptability to bone geometry when compared to other design concepts. The new bone fixation device model was fabricated by using NiTi shape memory alloy as its main constituent. Performance of the newly designed bone fixation device model made of NiTi shape memory alloy was evaluated. Meanwhile, commercial finite element analysis (FEA) software, Abaqus was used to analyze the mechanics of model as well as its behavior, so that the installation process during orthopedic surgery can be simulated. A prototype has been fabricated. Heat test was conducted in laboratory to investigate the actual performance of the prototype. Experimental data were compared to the simulation data for result validation. From simulation, it is found that the gap between two bone fragments has been reduced from 2mm to 0.2mm. However, slipping occurred during experiment, the gap has increased up to 6.54mm. The simulation result was further explored to justify the device’s feasibility. The findings of this research will provide one of the possibilities that can be made to solve shortcomings of a few existing SMA based bone fixation devices as reviewed in literature. The research has led to a conclusion that the newly designed device, Nitinol Stitch, has shown its potential advantages in orthopedics by offering a new alternative in fixing bone fracture. The design and experimental processes throughout the project can be used as a reference for future development of other SMA based bone fixation devices.
format	Thesis
qualification_level	Master's degree
author	Yong, Thian Haw
author_facet	Yong, Thian Haw
author_sort	Yong, Thian Haw
title	An investigation of the performance of NiTi shape memory alloy based bone fixation device
title_short	An investigation of the performance of NiTi shape memory alloy based bone fixation device
title_full	An investigation of the performance of NiTi shape memory alloy based bone fixation device
title_fullStr	An investigation of the performance of NiTi shape memory alloy based bone fixation device
title_full_unstemmed	An investigation of the performance of NiTi shape memory alloy based bone fixation device
title_sort	investigation of the performance of niti shape memory alloy based bone fixation device
granting_institution	Universiti Putra Malaysia
publishDate	2015
url	http://psasir.upm.edu.my/id/eprint/67809/1/fk%202015%20108%20ir.pdf
_version_	1747812518627115008

An investigation of the performance of NiTi shape memory alloy based bone fixation device

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