Investigation of a Passive Sensor Array for Diagnosis of Loosening of Endoprosthetic Implants
作者： Cathérine Ruther , Christian Schulze , Andrea Boehme , Hannes Nierath , Hartmut Ewald
DOI: 10.3390/S130100001
关键词:
摘要: Currently, imaging methods are used to diagnose loosening of endoprosthetic implants, but fail achieve 100% accuracy. In this study, a passive sensor array which is based on the interaction between magnetic oscillators inside implant and an excitation coil outside patient was investigated. The excited produce sound in audible range, varies according extent loosening. By performing several experimental tests, optimized guarantee reproducible selective emission. Variation distance demonstrated definite influence quality generated signal. Furthermore, numerical design analysis using boundary element method for consideration field selectivity during excitation. simulation showed higher with C-shape compared cylindrical coil. Based these investigations, system reveals potential detection Future aims include further miniaturization measurements determine sensitivity proposed system.
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