Lisa F Chen

US Patent:

20140350348, Nov 27, 2014

Filed:

May 22, 2014

Appl. No.:

14/285495

Inventors:

- Palo Alto CA, US
Lisa Chen - Stanford CA, US
Zhenan Bao - Stanford CA, US
Darren Lipomi - San Diego CA, US
Michael V. McConnell - Stanford CA, US
Ada Shuk Yan Poon - San Leandro CA, US

International Classification:

A61B 5/00
A61B 5/03
A61B 5/024

US Classification:

600300

Abstract:

Aspects of the present disclosure are directed to pressure sensing. As may be implemented in accordance with one or more embodiments, an external energy field is applied to a resonant circuit having inductive conductors separated by a compressible dielectric, for wirelessly detecting pressure. Specifically, the resonant circuit is responsive to the energy field and applied pressures by operating in respective states exhibiting different resonant frequencies that are based upon pressure-related compression of the compressible dielectric. These resonant frequencies, or a change in the resonant frequencies, can be used as an indication of the pressure.