An Electronic Osteosynthesis Implant for Continuous Load Monitoring using a Strain Gauge

Publikationstyp
Conference Paper
Publikationsdatum
2021-10
Sprache
English
Author
Adam, Christian orcid-logo
Barth, Tobias 
Münch, Matthias 
Seide, Klaus 
Krautschneider, Wolfgang 
Institut
Integrierte Schaltungen E-9 
TORE-URI
http://hdl.handle.net/11420/11729
Citation
IEEE Biomedical Circuits and Systems Conference (BioCAS 2021)
Contribution to Conference
IEEE Biomedical Circuits and Systems Conference, BioCAS 2021 
Publisher DOI
10.1109/BioCAS49922.2021.9644959
Scopus ID
2-s2.0-85124248630
The utilization of strain gauges for monitoring the applied mechanical load to osteosynthesis plates using electronic implants was reported several times in literature. The technique was found to provide valuable information for monitoring the fracture healing process and for improving the rehabilitation. This paper introduces a new electronic osteosynthesis implant, which uses supercapacitors as an energy storage for short term autonomous operation. Moreover, a bluetooth low energy (BLE) transceiver is integrated into the system, which covers larger distances and is less sensitive to misalignment than the commonly used inductive data transmission. This improves the usability of the proposed system for the patients. The system can continuously sample and transmit strain values at a sampling rate of 5 Hz for more than 10 min without being recharged. More than 60 cm of distance in any practically relevant direction can be covered by the BLE data transmission if the implant is placed 5 cm deep in a phantom. The implant dimensions of 20 mm x 16 mm still fit on osteosynthesis plates for larger bones.
Schlagworte
bluetooth low energy
continuous monitoring
osteosynthesis
strain measurement
wireless power transfer