研究目的
Investigating the feasibility of a mm-sized implantable medical device (IMD) using ultrasonic power transfer and a hybrid bi-directional data communication link for deep tissue applications.
研究成果
The study successfully demonstrates a proof-of-concept mm-sized implantable device using ultrasonic power transfer and a hybrid bi-directional data link. The prototype achieves safe and high power levels required for implant applications, with potential for further miniaturization and power enhancement. This opens up new possibilities for deep tissue implantable devices with efficient power and data communication.
研究不足
The current prototype demonstrates feasibility but requires further optimization for higher power levels and miniaturization. The study is limited by the prototype's size, power handling capacity, and the need for external testing equipment.
1：Experimental Design and Method Selection:
The study involves designing a mm-sized implantable device that uses ultrasonic power transfer for energy harvesting and a hybrid bi-directional data link for communication. The methodology includes the use of a piezoelectric receiver for ultrasonic energy harvesting, an IC for power recovery and data communication, and an off-chip antenna for RF uplink.
2：Sample Selection and Data Sources:
The implant prototype is tested in chicken meat to simulate human tissue conditions. Measurements include power recovery efficiency, data communication reliability, and system performance under varying conditions.
3：List of Experimental Equipment and Materials:
The setup includes an external ultrasonic transmitter (Olympus A303S-SU), a piezoelectric receiver, an IC designed in 65 nm CMOS process, an off-chip antenna, and measurement equipment for characterizing performance.
4：Experimental Procedures and Operational Workflow:
The implant is tested for power recovery and data communication in a controlled environment simulating deep tissue conditions. Performance metrics such as power efficiency, data rate, and reliability are measured.
5：Data Analysis Methods:
The collected data is analyzed to evaluate the system's performance, including power conversion efficiency, data communication reliability, and overall system feasibility.
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