Key result
Wireless power-transferred implantable ECG device enables continuous real-time cardiac monitoring in rat model.
Why the study?
Implantable medical devices have limited battery capacity restricting their functionalities, and wireless power transfer technology may overcome this limitation.
Supports preclinical feasibility of wireless implantable ECG; leaves open human translation and safety validation.
Implantable medical devices (IMDs) enable patients to monitor their health anytime and receive treatment anywhere. However, due to the limited capacity of a battery, their functionalities are restricted, and the devices may not achieve their intended potential fully. The most promising way to solve this limited capacity problem is wireless power transfer (WPT) technology. In this study, a WPT based implantable electrocardiogram (ECG) monitoring device that continuously records ECG data has been proposed, and its effectiveness is verified through an animal experiment using a rat model. Our proposed device is designed to be of size 24 × 27 × 8 mm, and it is small enough to be implanted in the rat. The device transmits data continuously using a low power Bluetooth Low Energy (BLE) communication technology. To charge the battery wirelessly, transmitting (Tx) and receiving (Rx) antennas were designed and fabricated. The animal experiment results clearly showed that our WPT system enables the device to monitor the ECG of a heart in various conditions continuously, while transmitting all ECG data in real-time.
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Kim et al. (2020) studied Arrhythmia / Myocardial Infarction (n=8). WPT-based implantable ECG monitoring device was evaluated on Feasibility of continuous ECG monitoring and real-time transmission using wireless power transfer. The wireless power transfer based implantable ECG device successfully enabled continuous monitoring and real-time transmission of ECG data under various heart conditions in a rat model.
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