SHPI: Smart Healthcare System for Patients in ICU using IoT

Smart healthcare monitoring systems provide better healthcare service by improving the availability and transparency of health data. However, it also posses serious threats to data security and privacy. As medical internet of things (IoT) are connected to other devices through various networks that provide a suitable attack surface for the intruders. Further, the health data are sensitive, and any breach in security may lead to wrong treatment or compromising the privacy of the patients. In this regard, a secure IoT frame is desirable, which is capable of preserving the integrity and confidentiality of the medical data. In this paper, we have proposed a novel architecture which leverages the blockchain technology to enhance the security and privacy of IoT for healthcare applications. In the proposed architecture called smart healthcare system for patients in ICU (SHPI), critical data is processed in edge computing which is located inside the hospital to reduce the communication latency. In order to provide tramper-proof medical records and data confidentiality SHPI uses blockchain technology and cryptographic methods respectively. Also, a data accessing token system is introduced to separate the group of users based on their roles. This system utilizes smart contracts to record every event for providing transparency in medical activities. In order to describe the working principles a logical analysis is carried out, that shows the system is capable of providing the desired security and privacy.