Patent ID: 6950699
Filing Date: 2005-09-27
Classification: A61B

Abstract:
1. A probe for measuring tissue water content in a region of interest in the brain, the probe comprising: an implantable tissue water content sensor having two plates with a proximal and distal end, the two plates being separated by a dielectric material and the distal end being implantable in brain tissue; an impedance matching circuit coupled to the proximal end of one of the plates; a first output terminal coupled to the matching circuit and a second output terminal coupled to one of the plates; a remotely positioned frequency spectrum analyzer receiving an output signal from the first and second output terminals; and a digital computer having a display, the digital computer having an input coupled to the output signal from the water content probe and the spectrum analyzer, the computer programmed to display the resonant frequency of the sensor indicative of water content in the brain tissue.