DocumentCode
129277
Title
Magnetically-powered implantable Doppler blood flow meter
Author
Sai Chun Tang ; Vilkomerson, D. ; Chilipka, Tom
Author_Institution
Med. Sch., Dept. of Radiol., Harvard Univ., Boston, MA, USA
fYear
2014
fDate
3-6 Sept. 2014
Firstpage
1622
Lastpage
1625
Abstract
Implantable active devices use batteries for power, requiring expensive and unwieldy metal enclosures. Some such devices are re-charged via magnetic fields, but require external coils to be close to and well aligned with internal coils. We show here a different method: powering a device using segmented Helmholtz coils, allowing much greater leeway in internal coil location; and transmitting magnetically wide-bandwidth data. A proof-of-concept experiment demonstrates practicality.
Keywords
Doppler effect; acoustic wave transmission; biomedical equipment; biomedical ultrasonics; blood flow measurement; external coils; implantable active devices; internal coil location; magnetic fields; magnetically wide-bandwidth data transmission; magnetically-powered implantable Doppler blood flow meter; metal enclosures; segmented Helmholtz coils; Batteries; Capacitors; Coils; Doppler effect; Impedance; Implants; Transducers; Diffraction grating transducer; Doppler blood flow meter; implantable device; segmented coil; wireless power transfer;
fLanguage
English
Publisher
ieee
Conference_Titel
Ultrasonics Symposium (IUS), 2014 IEEE International
Conference_Location
Chicago, IL
Type
conf
DOI
10.1109/ULTSYM.2014.0402
Filename
6931879
Link To Document