24 October 2012 Wireless glucose monitoring watch enabled by an implantable self-sustaining glucose sensor system
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Proceedings Volume 8548, Nanosystems in Engineering and Medicine; 85481G (2012) https://doi.org/10.1117/12.946334
Event: SPIE Nanosystems in Engineering + Medicine, 2012, Incheon, Korea, Republic of
Implantable glucose sensors can measure real time blood glucose as compared to conventional techniques involving drawing blood samples and in-vitro processing. An implantable sensor requires energy source for operation with wire inout provision for power and sending signals. Implants capable of generation-transmission of sensory signals, with minimal or no power requirement, can solve this problem. An implantable nanosensor design has been presented here, which can passively detect glucose concentration in blood stream and transmit data to a wearable receiver-recorder system or a watch. The glucose sensitive component is a redox pair of electrodes that generates voltage proportional to glucose concentration. The bio-electrode, made of carbon nanotubes-enzyme nanocluster, has been investigated because of the large surface area for taping electrical signals. This glucose sensor can charge a capacitor, which can be a part of a LCR resonance/inductive coupling based radio frequency (RF) sensor telemetry. Such a system can measure change in glucose concentration by the induced frequency shift in the LCR circuit. A simultaneous power transmission and signal transmission can be achieved by employing two separate LCR oscillating loops, one for each operation. The corresponding coupling LCR circuits can be housed in the wearable receiving watch unit. The data logged in this glucose monitoring watch can be instrumental in managing blood glucose as trigger for an insulin dispensing payload worn on person or implanted.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Pratyush Rai, Pratyush Rai, Vijay K. Varadan, Vijay K. Varadan, "Wireless glucose monitoring watch enabled by an implantable self-sustaining glucose sensor system", Proc. SPIE 8548, Nanosystems in Engineering and Medicine, 85481G (24 October 2012); doi: 10.1117/12.946334; https://doi.org/10.1117/12.946334

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