Continuous Non-Invasive Glucose Monitoring via Contact Lenses: Current Approaches and Future Perspectives

被引:35
作者
Bamgboje, David [1 ]
Christoulakis, Iasonas [2 ]
Smanis, Ioannis [1 ]
Chavan, Gaurav [1 ]
Shah, Rinkal [1 ]
Malekzadeh, Masoud [1 ]
Violaris, Ioannis [3 ]
Giannakeas, Nikolaos [2 ]
Tsipouras, Markos [3 ]
Kalafatakis, Konstantinos [2 ]
Tzallas, Alexandros [2 ]
机构
[1] Univ Massachusetts, Dept Elect & Comp Engn, Lowell, MA 01854 USA
[2] Univ Ioannina, Sch Informat & Telecommun, Dept Informat & Telecommun, Arta 47100, Greece
[3] Univ Western Macedonia, Dept Elect & Comp Engn, Kozani 50131, Greece
来源
BIOSENSORS-BASEL | 2021年 / 11卷 / 06期
关键词
contact lenses; glucose sensor; biosensors; low power; wireless health monitoring; non-invasive monitoring; BIOFUEL CELL;
D O I
10.3390/bios11060189
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Diabetes mellitus (DM) is a chronic disease that must be carefully managed to prevent serious complications such as cardiovascular disease, retinopathy, nephropathy and neuropathy. Self-monitoring of blood glucose is a crucial tool for managing diabetes and, at present, all relevant procedures are invasive while they only provide periodic measurements. The pain and measurement intermittency associated with invasive techniques resulted in the exploration of painless, continuous, and non-invasive techniques of glucose measurement that would facilitate intensive management. The focus of this review paper is the existing solutions for continuous non-invasive glucose monitoring via contact lenses (CLs) and to carry out a detailed, qualitative, and comparative analysis to inform prospective researchers on viable pathways. Direct glucose monitoring via CLs is contingent on the detection of biomarkers present in the lacrimal fluid. In this review, emphasis is given on two types of sensors: a graphene-AgNW hybrid sensor and an amperometric sensor. Both sensors can detect the presence of glucose in the lacrimal fluid by using the enzyme, glucose oxidase. Additionally, this review covers fabrication procedures for CL biosensors. Ever since Google published the first glucose monitoring embedded system on a CL, CL biosensors have been considered state-of-the-art in the medical device research and development industry. The CL not only has to have a sensory system, it must also have an embedded integrated circuit (IC) for readout and wireless communication. Moreover, to retain mobility and ease of use of the CLs used for continuous glucose monitoring, the power supply to the solid-state IC on such CLs must be wireless. Currently, there are four methods of powering CLs: utilizing solar energy, via a biofuel cell, or by inductive or radiofrequency (RF) power. Although, there are many limitations associated with each method, the limitations common to all, are safety restrictions and CL size limitations. Bearing this in mind, RF power has received most of the attention in reported literature, whereas solar power has received the least attention in the literature. CLs seem a very promising target for cutting edge biotechnological applications of diagnostic, prognostic and therapeutic relevance.
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页数:15
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