NFC Powered Implantable Temperature Sensor

Kifle, Yonatan; Wikner, J. Jacob; Zötterman, Johan; Rydén, Louise; Farnebo, Simon

doi:10.1109/embc.2019.8856607

Cited by 6 publications

(3 citation statements)

References 2 publications

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“…By changing the transmission protocol to NFC or RFID, it is possible to develop sensors without a battery (“passive devices”) however, the inductive coils available today are quite large compared to a mandible reconstruction plate and the penetration depth of the signal into soft tissue is quite low [ 24 ]. Furthermore, recording can only be achieved when the receiver is placed next to the coil; a continuous measurement is hardly possible anymore [ 25 , 26 ]. Nevertheless, these techniques seem to be a promising option for devices in the maxillofacial region as induction coils are constantly being developed and, if desired, they can also be incorporated directly into the plate with the strain sensor.…”

Section: Discussionmentioning

confidence: 99%

Feasibility of Implant Strain Measurement for Assessing Mandible Bone Regeneration

et al. 2022

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Nonunion is one of the most dreaded complications after operative treatment of mandible fractures or after mandible reconstruction using vascularized and non-vascularized bone grafts. Often diagnosis is made at advanced stage of disease when pain or complications occur. Devices that monitor fracture healing and bone regeneration continuously are therefore urgently needed in the craniomaxillofacial area. One promising approach is the strain measurement of plates. An advanced prototype of an implantable strain measurement device was tested after fixation to a locking mandible reconstruction plate in multiple compression experiments to investigate the potential functionality of strain measurement in the mandibular region. Compression experiments show that strain measurement devices work well under experimental conditions in the mandibular angle and detect plate deformation in a reliable way. For monitoring in the mandibular body, the device used in its current configuration was not suitable. Implant strain measurement of reconstruction plates is a promising methodical approach for permanent monitoring of bone regeneration and fracture healing in the mandible. The method helps to avoid or detect complications at an early point in time after operative treatment.

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Section: Discussionmentioning

confidence: 99%

Feasibility of Implant Strain Measurement for Assessing Mandible Bone Regeneration

et al. 2022

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“…Several research groups, including our own, are working on such solutions. [105][106][107] The probe would use a small battery or some kind of inductive energy source and transfer data to an external monitor. The probe would not be removed after the postoperative monitoring period.…”

Section: Lmentioning

confidence: 99%

Laser Speckle Contrast Imaging in Reconstructive Surgery

Zötterman

2020

Linköping University Medical Dissertations

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“…On the one hand, active implantable sensors require electrical energy that is usually supplied by batteries or by wireless power transfer (WPT) methods that need coils or other bulky energy transducers, limiting their size and spatial applicability [6] [7]. For example, in [8] an implantable temperature sensor powered by NFC is proposed, containing a square-shaped coil of 25 mm × 25 mm. On the other hand, sensors with passive electronics also typically require large components for interrogation.…”

Section: Introductionmentioning

confidence: 99%

Injectable Temperature Sensors Based on Passive Rectification of Volume-Conducted Currents

Becerra-Fajardo

García-Moreno

Llano

et al. 2021

2021 IEEE Biomedical Circuits and Systems Conference (BioCAS)

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In situ monitoring of biomedical parameters with implantable sensors can provide information to trigger interventional or therapeutic actions. However, these sensors require bulky components for power or for interrogation that hinder miniaturization. We have proposed a wireless sensing method based in passive rectification of high frequency current bursts that flow through the tissues by volume conduction.Here we report the evaluation of a 0.98 mm-thick, passive, and flexible temperature sensor based on this method. The injectable microsensor obtained an accuracy of ±2.1%. This opens the possibility of continuous and in situ temperature sensing with minimal invasiveness.

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NFC Powered Implantable Temperature Sensor

Cited by 6 publications

References 2 publications

Feasibility of Implant Strain Measurement for Assessing Mandible Bone Regeneration

Feasibility of Implant Strain Measurement for Assessing Mandible Bone Regeneration

Laser Speckle Contrast Imaging in Reconstructive Surgery

Injectable Temperature Sensors Based on Passive Rectification of Volume-Conducted Currents

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