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Powering a Ventricular Assist Device (VAD) With the Free-Range Resonant Electrical Energy Delivery (FREE-D) System
By: Bonde, P.; Sample, A.P.; Waters, B.H.; Smith, J.R.;
2012 / IEEE
This item was taken from the IEEE Periodical ' Powering a Ventricular Assist Device (VAD) With the Free-Range Resonant Electrical Energy Delivery (FREE-D) System ' Wireless data communication technology has eliminated wired connections for data transfer to portable devices. Wireless power technology offers the possibility of eliminating the remaining wired connection: the power cord. For ventricular assist devices (VADs), wireless power technology will eliminate the complications and infections caused by the percutaneous wired power connection. Integrating wireless power technology into VADs will enable VAD implants to become a more viable option for heart failure patients (of which there are 80 000 in the United States each year) than heart transplants. Previous transcutaneous energy transfer systems (TETS) have attempted to wirelessly power VADs ; however, TETS-based technologies are limited in range to a few millimeters, do not tolerate angular misalignment, and suffer from poor efficiency. The free-range resonant electrical delivery (FREE-D) wireless power system aims to use magnetically coupled resonators to efficiently transfer power across a distance to a VAD implanted in the human body, and to provide robustness to geometric changes. Multiple resonator configurations are implemented to improve the range and efficiency of wireless power transmission to both a commercially available axial pump and a VentrAssist centrifugal pump . An adaptive frequency tuning method allows for maximum power transfer efficiency for nearly any angular orientation over a range of separation distances. Additionally, laboratory results show the continuous operation of both pumps using the FREE-D system with a wireless power transfer efficiency upwards of 90%.
Wireless Power Transfer Efficiency
Ventricular Assist Device
Free-range Resonant Electrical Energy Delivery System
Wireless Data Communication Technology
Percutaneous Wired Power Connection
Heart Failure Patients
Transcutaneous Energy Transfer Systems
Wireless Power Transmission Range
Wireless Power Transmission Efficiency
Ventrassist Centrifugal Pump
Adaptive Frequency Tuning Method
Integrated Circuit Modeling
Magnetic Resonance Imaging
Power System Planning
Magnetically Coupled Resonators
Ventricular Assist Device (vad)
Inductive Power Transmission
General Topics For Engineers