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Published on: June 1, 2012
Integrated electronic/fluidic microneedle system for glucose sensing and insulin delivery
Xinshuo Huang1, Baoming Liang1, Shuang Huang2
1State Key Laboratory of Optoelectronic Materials and Technologies; Guangdong Province Key Laboratory of Display Material and Technology; School of Electronics and Information Technology; Sun Yat-Sen University, Guangzhou, 510006, China.
This study introduces an integrated electronic/fluidic microneedle patch (IEFMN) for continuous glucose monitoring and insulin delivery. The device offers precise diabetes management with minimally invasive microneedles and improved glucose sensing accuracy.
Area of Science:
- Biomedical Engineering
- Materials Science
- Nanotechnology
Background:
- Accurate blood glucose regulation is crucial for diabetes diagnosis and management.
- Artificial pancreas systems integrate continuous glucose monitoring (CGM) and insulin pumps for closed-loop control.
- Microneedle technology offers less invasive glucose monitoring but faces challenges in infection risk and sensitivity.
Purpose of the Study:
- To develop an integrated electronic/fluidic microneedle patch (IEFMN) for simultaneous glucose sensing and insulin delivery.
- To enhance diabetes management through a miniaturized, closed-loop system.
- To address limitations of existing microneedle technologies.
Main Methods:
- Development of an IEFMN with minimally invasive microneedles for reduced discomfort and infection risk.
- Utilized wired enzyme functionalization to mitigate oxygen deprivation and lower operating voltages for glucose sensing.
- Incorporated hollow microneedles for precise insulin delivery.
Main Results:
- The IEFMN system demonstrated high sensitivity, selectivity, and a wide response range for glucose detection with reduced interference.
- Wired enzyme functionalization improved accuracy and lowered sensing potential.
- In vivo studies in rats confirmed real-time subcutaneous glucose tracking and effective insulin delivery for blood glucose regulation.
Conclusions:
- The developed IEFMN system shows promising performance for in vivo glucose detection and insulin delivery.
- This technology has the potential to advance real-time, intelligent, and controllable diabetes management.
- The IEFMN offers a minimally invasive and accurate approach for integrated diabetes care.
