The rapid growth of Medical Internet of Things devices, such as wearable heart monitors, smart insulin pumps, and remote patient monitoring systems, has transformed healthcare by enabling real-time diagnostics and personalized treatment. However, the sensitive nature of healthcare data and the limited resources of these devices create significant challenges in ensuring data privacy, meeting regulatory requirements, and maintaining energy efficiency. Traditional cloud-based artificial intelligence solutions often fail to address these challenges because they require centralized data storage, which increases the risk of privacy breaches and violates regulations like the Health Insurance Portability and Accountability Act and the General Data Protection Regulation. To overcome these limitations, this paper proposes a novel framework that combines adaptive differential privacy with federated edge artificial intelligence to enable secure, distributed learning across medical Internet of Things networks. Consider a scenario where a hospital uses wearable heart monitors to detect irregular heartbeats in patients. These devices collect sensitive health data, which is sent to a central server for analysis. However, this centralized approach poses a risk: if the server is hacked, patient data could be exposed, leading to privacy violations and legal penalties. Additionally, the constant transmission of data to the cloud drains the battery life of the wearable devices, making them less practical for long-term use. Our framework addresses these issues by enabling the wearable devices to analyze data locally, without sending it to a central server. This not only protects patient privacy but also reduces energy consumption, extending the battery life of the devices. Our framework introduces adaptive differential privacy mechanisms that dynamically adjust the level of noise added to data based on the sensitivity of the information and the capabilities of the medical Internet of Things devices. For example, data from a cancer monitoring device would require stronger privacy protections compared to data from a fitness tracker. This ensures compliance with privacy regulations while maintaining high diagnostic accuracy. Additionally, we propose a hierarchical federated learning architecture where edge servers act as intermediaries between medical Internet of Things devices and a central server. This reduces communication overhead and enables real-time diagnostics with sub-100-millisecond latency, critical for applications like irregular heartbeat detection in wearable heart monitors. To address the energy constraints of medical Internet of Things devices, we implement lightweight lattice-based homomorphic encryption for secure model aggregation. This approach allows computations to be performed on encrypted data, ensuring privacy without requiring significant computational resources. Our experiments show that this method reduces energy consumption by 40 percent compared to traditional federated learning frameworks, making it suitable for battery-powered devices like smart insulin pumps and wearable sensors. We validate our framework using the Wearable Stress and Affect Detection dataset and synthetic heart data generated using generative adversarial networks. The results demonstrate robust performance in detecting medical anomalies, such as irregular heartbeats, while effectively resisting privacy attacks like membership inference. A case study on smart insulin pumps further highlights the practicality of our approach. By training low blood sugar prediction models across 10,000 devices in a federated manner, we achieved 92 percent diagnostic accuracy while blocking 99 percent of privacy attacks. This work bridges the gap between privacy-preserving artificial intelligence and edge computing, offering a scalable, energy-efficient solution for next-generation medical Internet of Things applications. By aligning with emerging standards like the National Institute of Standards and Technology’s Privacy Framework and the European Telecommunications Standards Institute’s edge artificial intelligence specifications, our framework sets a new benchmark for secure, real-time healthcare diagnostics. It also addresses ethical concerns by ensuring that artificial intelligence models are transparent and explainable, fostering trust among healthcare providers and patients. In conclusion, our framework provides a comprehensive solution to the challenges of privacy, compliance, and energy efficiency in medical Internet of Things networks. It enables secure, real-time diagnostics while ensuring that sensitive patient data remains private and protected. This research has significant implications for the future of healthcare, paving the way for widespread adoption of medical Internet of Things devices in clinical and remote settings. By integrating cutting-edge technologies like adaptive differential privacy, federated learning, and edge artificial intelligence, we offer a robust and scalable approach to transforming healthcare delivery.
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