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The power of sound: miniaturized medical implants with ultrasonic links
- Source :
- Micro- and Nanotechnology Sensors, Systems, and Applications IX.
- Publication Year :
- 2017
- Publisher :
- SPIE, 2017.
-
Abstract
- Miniaturized wirelessly powered implants capable of operating and communicating deep in the body are necessary for the next-generation of diagnostics and therapeutics. A major challenge in developing these minimally invasive implants is the tradeoff between device size, functionality, and operating depth. Here, we review two different wireless powering methods, inductive and ultrasonic power transfer, examine how to analyze their power transfer efficiency, and evaluate their potential for powering implantable medical devices. In particular, we show how ultrasonic wireless power transfer can address these challenges due to its safety, low attenuation, and millimeter wavelengths in the body. Finally, we demonstrate two ultrasonically powered implants capable of active power harvesting and bidirectional communication for closed-loop operation while functioning through multiple centimeters of tissue.
- Subjects :
- Sound (medical instrument)
ComputerSystemsOrganization_COMPUTERSYSTEMIMPLEMENTATION
Computer science
business.industry
020208 electrical & electronic engineering
Electrical engineering
02 engineering and technology
AC power
01 natural sciences
Power (physics)
Wavelength
0103 physical sciences
0202 electrical engineering, electronic engineering, information engineering
Maximum power transfer theorem
Wireless
ComputerSystemsOrganization_SPECIAL-PURPOSEANDAPPLICATION-BASEDSYSTEMS
Ultrasonic sensor
Wireless power transfer
business
010301 acoustics
Energy harvesting
Subjects
Details
- ISSN :
- 0277786X
- Database :
- OpenAIRE
- Journal :
- Micro- and Nanotechnology Sensors, Systems, and Applications IX
- Accession number :
- edsair.doi...........28463cd0db55ccdd40ac5ac72d8b43d8