Patent ID: 8934953
Filing Date: 2015-01-13
Classification: A61B,A61F

Abstract:
1. An apparatus for detecting intracranial temperature and blood oxygenation in a patient, said apparatus comprising a transducer having a working surface for placement against a patient's cranium, said transducer including a microwave antenna defining an aperture at or near said working surface, said antenna being tuned to a first frequency that produces a first output signal indicative of heat emanating from within a cranium against which it is placed, an oxygen saturation sensor sharing said aperture, said sensor including an electromagnetic radiation emitter which directs electromagnetic radiation across the aperture to a radiation detector, said detector senses any radiation not absorbed by a cranium against which the transducer is placed and produces a corresponding second output signal, and a control unit connected to the transducer, said control unit including a display, a radiometer centered on said first frequency and which receives said first output signal and produces a corresponding temperature signal, and a processor to process the second output signal and calculate an oxygenation value for display by the control unit, and further wherein said antenna is a rectangular waveguide having a pair of opposite broader walls and a pair of opposite narrower walls which define broader and narrower boundaries of said aperture, and the emitter and detector are located opposite one another at said narrower boundaries.