Head-compliant microstrip split ring resonator for non-invasive healing monitoring after craniosynostosis-based surgery

Autor: Mauricio David Perez, Seung Hee Jeong, Sujith Raman, Daniel Nowinski, Zhigang Wu, Syaiful M.S. Redzwan, Jacob Velander, Zhiwei Peng, Klas Hjort, Robin Augustine
Jazyk: angličtina
Rok vydání: 2019
Předmět:
bone
phantoms
surgery
skin
elasticity
bending
biomechanics
paediatrics
split ring resonators
microstrip resonators
patient monitoring
liquid alloys
microwave resonators
biomedical equipment
bone grafts
calvarial defects
osteogenesis process
dielectric properties
resonance frequency
computational head models
head phantom models
human head
newborn children
defect area
monitoring systems
post-operative monitoring
bone healing
head-compliant microstrip split ring resonator
noninvasive healing monitoring
craniosynostosis-based surgery
soft proximity-coupled split-ring resonator
highly directive proximity-coupled split-ring resonator
copper
polydimethylsiloxane
liquid alloy
calvarial bone osteogenesis
computational software technology microwave studio-based simulation
head curvatures
skin elasticity
reconstructive surgical procedures
Medical technology
R855-855.5
Zdroj: Healthcare Technology Letters (2019)
Druh dokumentu: article
ISSN: 2053-3713
DOI: 10.1049/htl.2018.5083
Popis: A soft and highly directive, proximity-coupled split-ring resonator fabricated with a liquid alloy, copper and polydimethylsiloxane (PDMS) is presented. The same was designed for sensing osteogenesis of calvarial bone. As dielectric properties of bone grafts in ossifying calvarial defects should change during the osteogenesis process, devices like this could monitor the gradual transformation of the defect into bone by differentiating changes in the dielectric properties as shifts in the resonance frequency. Computational Software Technology (CST) Microwave Studio®-based simulation results on computational head models were in good agreement with laboratory results on head phantom models, which also included the comparison with an in-vivo measurement on the human head. A discussion based on an inductive reasoning regarding dynamics’ considerations is provided as well. Since the skin elasticity of newborn children is high, stretching and crumpling could be significant. In addition, due to typical head curvatures in newborn children, bending should not be a significant issue, and can provide higher energy focus in the defect area and improve conformability. The present concept could support the development of soft, cheap and portable follow-up monitoring systems to use in outpatient hospital and home care settings for post-operative monitoring of bone healing after reconstructive surgical procedures.
Databáze: Directory of Open Access Journals
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