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A system-level model of a wireless power and data transmission system with a closed-loop epileptic seizure detector and suppressor device for low-power implantable applications is proposed using the MATLAB Simulink software. The proposed system transmits power and bidirectional data through a single inductive link with a monitoring unit, and records high-resolution intracranial-EEG (iEEG) signals by multiple electrode channels. The recording signals are processed in the analog domain and feed a digital signal processing block to extract five time-domain features to detect the seizure onsets, using datasets from Inselspital Bern. Subsequently, a current-mode multi-channel electrical stimulator is activated according to the seizure detection signal and delivers the electrical pulses to the brain. How to use System Simulink file can be opened in MATLAB Simulink and the whole system can be found. Or, the script of Controlled.m can be opened, the initial parameter should be given and after clicking on the Run button, the system-level modeling simulation results are shown in the separate figures. Publication These system-level models are used in the following conference paper: System-Level Modeling of a Safe Autonomous Closed-loop Epileptic Seizure Control Implant Funding source This project has been supported by the SNSF under project No.200020-18254

Inductive power transfer (IPT) is a developing technique for wireless power and data communication systems in the application of implanted medical devices (IMDs). Multiple implants are developed to cover large areas and satisfy the clinical requirements of distributed and long-term biological data acquisition or treatment. In this paper, an analysis of wirelessly-powered implants is proposed to efficiently provide the required power to send and receive data from multiple implants to the external unit. The concept of using different operation frequencies for each implant is also presented, while data transmission employs amplitude and load shift keying (ASK and LSK) for forward and backward telemetry, respectively. How to use MATLAB codes can be complied separately by simply clicking the RUN button.The simulation results are shown in separate figures. This research was done by Mr. Yuxuan Zhou in his master's thesis project in 2022. Publication These inductive link modelsare used in the following conference paper for multiple powering applications: Simultaneous Wireless Power and Data Transmission Through a Single Inductive Link For Multiple Implantable Medical Devices Funding source This project has been supported by theSNSFunder project No.200020-18254