Implanted prosthesis could be subjected to fractures due to defects and to aging. Conventional diagnostic tools involves X-Rays or, more commonly, the onset of the patient's pain due to an irreversible failure. A non-invasive wireless monitoring system is here presented for the early detection of micro-cracks over metallic orthopedic implants. The proposed architecture involves a distributed electrode made of Space Filling Curves connected to the anti-tamper port of a UHF RFID transponder. The occurrence of an even small surface crack is detected in a binary form and transmitted remotely, outside the body following a standard RFID interrogation. The feasibility of the idea is supported by numerical analysis and experimental outcomes with a 3D printed and metallized hip prosthesis mockup. Preliminary results demonstrate a detection distance up to 0.7m, fully compliant with fast and non-collaborative diagnosis in the emerging Personalized Healthcare.
Nappi, S., Gargale, L., Valentini, P.p., Marrocco, G. (2019). RF detection of micro-cracks in orthopedic implants by conformal space filling curves. In 2019 IEEE International Conference on RFID Technology and Applications, RFID-TA 2019 (pp.240-243). Institute of Electrical and Electronics Engineers Inc. [10.1109/RFID-TA.2019.8892196].
RF detection of micro-cracks in orthopedic implants by conformal space filling curves
Valentini P. P.;Marrocco G.
2019-01-01
Abstract
Implanted prosthesis could be subjected to fractures due to defects and to aging. Conventional diagnostic tools involves X-Rays or, more commonly, the onset of the patient's pain due to an irreversible failure. A non-invasive wireless monitoring system is here presented for the early detection of micro-cracks over metallic orthopedic implants. The proposed architecture involves a distributed electrode made of Space Filling Curves connected to the anti-tamper port of a UHF RFID transponder. The occurrence of an even small surface crack is detected in a binary form and transmitted remotely, outside the body following a standard RFID interrogation. The feasibility of the idea is supported by numerical analysis and experimental outcomes with a 3D printed and metallized hip prosthesis mockup. Preliminary results demonstrate a detection distance up to 0.7m, fully compliant with fast and non-collaborative diagnosis in the emerging Personalized Healthcare.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
