Instrumented Spinal Cord Surrogate Using Optical Fiber: Role of the Fiber's Location
Autor: | Bora Ung, Éric Wagnac, Prabin Pradhan, Yann Facchinello, Yvan Petit, Louis-Marie Peyrache, Jean-Marc Mac-Thiong |
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Rok vydání: | 2017 |
Předmět: |
Materials science
Optical fiber Traumatic spinal cord injury 0206 medical engineering Biomechanics 02 engineering and technology Anatomy medicine.disease Compression (physics) Spinal cord 020601 biomedical engineering law.invention 03 medical and health sciences 0302 clinical medicine medicine.anatomical_structure Spinal cord compression law medicine Continuous recording Fiber 030217 neurology & neurosurgery |
Zdroj: | Biomedical Engineering. |
DOI: | 10.2316/p.2017.852-028 |
Popis: | In vitro replication of traumatic spinal cord injury is necessary to understand its biomechanics and to improve prevention devices and care. During the trauma, the spinal cord withstands an impaction at high velocity. In order to fully assess spinal cord compression, a physical spinal cord surrogate instrumented with bare optical fibers is a promising avenue. The sensing is based on light transmission loss observed in optical fibers subjected to bending. In this paper, the role of the fibers' position within the surrogate is presented and discussed. The closer the fiber from the surface of the spinal cord, the more sensitive it is to small compression magnitude. A threshold value of 15 % was observed for the fiber located at the upper surface of the surrogate. However, this fiber was not able to record compression over 40 %. Another fiber located in the middle of the surrogate was needed to record compression between 40 % to 85 %. Using two fibers allows continuous recording of compressions ranging from 15 % to 85 %. This study shows the relevance of using multiple fibers in order to fully assess the compression of the spinal cord surrogate. |
Databáze: | OpenAIRE |
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