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In Vivo Continuous Biosensing: Design Considerations and Emerging Technologies
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DOI：10.1002/smll.74958.png)
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Abstract
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In vivo biosensing technologies are revolutionizing how health and disease are monitored by enabling continuous, real-time measurement of biomarkers within the body. From the first enzymatic electrode biosensor developed to modern integrated sensing devices, progress in materials science, microelectronics, and bioengineering has expanded the scope of implantable sensors. Key requirements such as high analytical performance, long-term biocompatibility, safe energy supply, and reliable wireless communication must be met for successful clinical translation. Major application areas include metabolic monitoring (exemplified by continuous glucose monitors for diabetes), cardiovascular management, neural interfaces for brain activity, inflammatory disease tracking, oncology, transplant organ monitoring, bladder dysfunction management, and biomechanical strain sensing. This review provides a comprehensive overview of design strategies for in vivo biosensors, categorized into three implantation approaches: material-based implants, injectable microdevices, and surgical implants. We discuss the historical development, state-of-the-art examples, and design considerations for each strategy. A comparative analysis highlights their respective advantages and limitations. Finally, we examine the overarching challenges and future perspectives that will guide the next generation of implantable biosensing devices toward widespread clinical impact.
Keywords:
bioelectronics
biosensor
emerging technologies
microelectronics
risk analysis
systems engineering
wearable computer
wireless
Journal
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12.1
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3.0W
Citations:
16.4W
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Cited Papers