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CMOS image sensor-based implantable glucose sensor using glucose-responsive fluorescent hydrogel.

Takashi Tokuda¹, Masayuki Takahashi², Kazuhiro Uejima¹

¹Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5Takayama-cho, Ikoma, Nara 630-0192, Japan.

Biomedical Optics Express

|November 27, 2014

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This summary is machine-generated.

This study introduces a novel implantable glucose sensor using optical sensing with a fluorescent hydrogel. The device, built on a CMOS image sensor, shows feasibility for glucose monitoring in vitro and in vivo.

Area of Science:

Biomedical Engineering
Materials Science
Optical Sensing

Background:

Accurate glucose monitoring is crucial for diabetes management.
Existing glucose sensors face challenges like limited lifespan and invasiveness.
Optical sensing offers a promising alternative for glucose detection.

Purpose of the Study:

To develop and validate a novel implantable glucose sensor utilizing an optical-sensing scheme.
To integrate a CMOS image sensor with a glucose-responsive fluorescent hydrogel for enhanced detection.
To assess the sensor's performance through in vitro and in vivo experiments.

Main Methods:

Fabrication of a wired implantable glucose sensor on a flexible polyimide substrate.
Integration of a CMOS image sensor, UV LEDs, optical filter, and fluorescent hydrogel.

Keywords:

(000.0000) General (000.2700) General science

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Utilizing fluorescence changes in the hydrogel upon glucose interaction for measurement.

Conducting in vitro and in vivo experiments to verify sensor functionality.

Main Results:

Successful integration of all components onto a flexible substrate.
Demonstrated glucose-responsive fluorescence changes in the hydrogel.
Validation of the sensor's feasibility and performance in both laboratory and biological settings.
Successful in vivo experiments confirming the sensor's potential for continuous glucose monitoring.

Conclusions:

The proposed CMOS image sensor-based implantable glucose sensor is a viable technology.
The optical-sensing scheme utilizing fluorescent hydrogels offers a promising approach for glucose monitoring.
Further development could lead to improved diabetes management tools.