The implementation of an MBAN gateway

Abstract

Epilepsy is a severe neurological disorder that affects every aspect of a patient’s life. Unfortunately, there is no complete cure for everyone on the market yet. However, a lot of work has been done on seizure prevention. The entire project details the proof of concept implementation of a secure and reliable MBAN (Medical Body Area Network) used for seizure prevention. The principal objective of the MBAN system is to set up and maintain secure connections between the nodes of the MBAN system and store and analyze the received data in the cloud. Therefore, a suitable gateway is needed, which is created in this work. The gateway concerns a mobile application constructed with the Flutter SDK. The main ability of the applicaton is to communicate with the implantable medical device, which in the demonstration is the node the gateway is connected to using BLE. The application is designed for Android and iOS and is connected to the AWS cloud service in which the data is stored and analyzed with a simple function that checks whether the received heart rate is above a certain threshold. This function can be easily replaced by a more extensive function. In addition, the application displays user health metrics such as the heart rate, connection state, and it can update the firmware of the implantable medical device. The security measures taken in this project concern setting up the BLE connection with an OOB (Out Of Band) channel for key sharing, after which the key is used to encrypt the data streams. Additionally, the data in the cloud is encrypted.