Eddy Current-TMR Sensor for micro-motion detection of orthopaedic implants

R. P. Khokle, S. Cardoso de Freitas, K. Esselle, M. Heimlich, F. Franco, D. Bokor

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

Abstract

Every year millions of people around the world undergo orthopaedic surgeries with partial or complete joint replacements. However, according to the various arthroplasty registers around the world, about 10 % of the implants require re-surgery at some point in their lifetime [1]. About 80-90% of implant failures occur due to mechanical reasons [1-2]. It is proposed in [2], that micromotion of the orthopaedic implants during the limb movement can provide insights on the possible implant failure in the future. For this purpose, it is necessary to monitor the motion of metallic orthopaedic implants with the resolution of the order of tens of microns when the person moves a limb. In this paper, it is proposed to use a small sensor embedded inside the bone at a distance from the orthopaedic implant. The space available for such a sensor is limited to the cylindrical hole of dimensions 3 mm × 10 mm.

Original languageEnglish
Title of host publication2018 IEEE International Magnetic Conference, INTERMAG 2018
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages1
ISBN (Electronic)9781538664254
ISBN (Print)9781538664261
DOIs
Publication statusPublished - 24 Oct 2018
Event2018 IEEE International Magnetic Conference, INTERMAG 2018 - Singapore, Singapore
Duration: 23 Apr 201827 Apr 2018

Conference

Conference2018 IEEE International Magnetic Conference, INTERMAG 2018
CountrySingapore
CitySingapore
Period23/04/1827/04/18

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Khokle, R. P., Cardoso de Freitas, S., Esselle, K., Heimlich, M., Franco, F., & Bokor, D. (2018). Eddy Current-TMR Sensor for micro-motion detection of orthopaedic implants. In 2018 IEEE International Magnetic Conference, INTERMAG 2018 [8508745] Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/INTMAG.2018.8508745