The Experts below are selected from a list of 42 Experts worldwide ranked by ideXlab platform
Ada S Y Poon - One of the best experts on this subject based on the ideXlab platform.
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Midfield Wireless Powering for Implantable Systems
Proceedings of the IEEE, 2013Co-Authors: John S Ho, Ada S Y PoonAbstract:Efficient wireless power transfer across tissue is highly desirable for removing bulky energy storage components. Most existing power transfer systems are conceptually based on coils linked by slowly varying magnetic fields (less than 10 MHz). These systems have many important capabilities, but are poorly suited for tiny, millimeter-scale Implants where extreme asymmetry between the source and the receiver results in weak coupling. This paper first surveys the analysis of near-field power transfer and associated strategies to optimize efficiency. It then reviews analytical models that show that significantly higher efficiencies can be obtained in the electromagnetic midfield. The performance limits of such systems are explored through optimization of the source, and a numerical example of a Cardiac Implant demonstrates that millimeter-sized devices are feasible.
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wireless power transfer to a Cardiac Implant
Applied Physics Letters, 2012Co-Authors: John S Ho, Lisa Y Chen, Ada S Y PoonAbstract:We analyze wireless power transfer between a source and a weakly coupled Implant on the heart. Numerical studies show that mid-field wireless powering achieves much higher power transfer efficiency than traditional inductively coupled systems. With proper system design, power sufficient to operate typical Cardiac Implants can be received by millimeter-sized coils.
John S Ho - One of the best experts on this subject based on the ideXlab platform.
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Midfield Wireless Powering for Implantable Systems
Proceedings of the IEEE, 2013Co-Authors: John S Ho, Ada S Y PoonAbstract:Efficient wireless power transfer across tissue is highly desirable for removing bulky energy storage components. Most existing power transfer systems are conceptually based on coils linked by slowly varying magnetic fields (less than 10 MHz). These systems have many important capabilities, but are poorly suited for tiny, millimeter-scale Implants where extreme asymmetry between the source and the receiver results in weak coupling. This paper first surveys the analysis of near-field power transfer and associated strategies to optimize efficiency. It then reviews analytical models that show that significantly higher efficiencies can be obtained in the electromagnetic midfield. The performance limits of such systems are explored through optimization of the source, and a numerical example of a Cardiac Implant demonstrates that millimeter-sized devices are feasible.
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wireless power transfer to a Cardiac Implant
Applied Physics Letters, 2012Co-Authors: John S Ho, Lisa Y Chen, Ada S Y PoonAbstract:We analyze wireless power transfer between a source and a weakly coupled Implant on the heart. Numerical studies show that mid-field wireless powering achieves much higher power transfer efficiency than traditional inductively coupled systems. With proper system design, power sufficient to operate typical Cardiac Implants can be received by millimeter-sized coils.
Elias Mossialos - One of the best experts on this subject based on the ideXlab platform.
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prices for Cardiac Implant devices may be up to six times higher in the us than in some european countries
Health Affairs, 2018Co-Authors: Martin Wenzl, Elias MossialosAbstract:Medical devices are estimated to account for 6 percent of health expenditures in the US and 7 percent in European Union (EU) countries. Cardiac Implants are a large segment of the market, but littl...
Martin Wenzl - One of the best experts on this subject based on the ideXlab platform.
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prices for Cardiac Implant devices may be up to six times higher in the us than in some european countries
Health Affairs, 2018Co-Authors: Martin Wenzl, Elias MossialosAbstract:Medical devices are estimated to account for 6 percent of health expenditures in the US and 7 percent in European Union (EU) countries. Cardiac Implants are a large segment of the market, but littl...
Elisabeth Dufour-gergam - One of the best experts on this subject based on the ideXlab platform.
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Energy harvesting system for Cardiac Implant applications
2011 Symposium on Design Test Integration & Packaging of MEMS MOEMS (DTIP), 2011Co-Authors: Martin Deterre, Bertrand Boutaud, Renzo Dalmolin, Jean Jacques Chaillout, Elie Lefeuvre, Sebastien Boisseau, Elisabeth Dufour-gergamAbstract:The miniaturization process in active medical Implantable devices is driving the development of novel energy sources such as small volume, high longevity energy harvesting systems. In this study, we present an approach for the design of an inertial energy scavenger powering Cardiac Implants from heart generated vibrational energy. The heart acceleration spectrum has been measured and analyzed. Achievable power level and design parameters are determined from a spectral analysis to about 100µW before electronics efficiencies for a 0.5 cm3 volume.