Abstract: An acoustic otoscope generates volume change excitations of either a trapezoidal or sinusoidal waveforms which are coupled into a sealed ear canal using a speculum tip. The change in volume results in a pressure change, for which a pressure measurement is taken during the volume change excitation interval. In one example, a trapezoidal time-domain volume change is presented, and a pressure measurement waveform is stored, the pressure measurement waveform thereafter examined to find a change of slope point in time, after which the pressure measurement waveform is scaled to be equal to the volume change waveform at that same point in time, a difference between scaled pressure measurement and volume excitation is formed, and examined for peak value prior to the earlier determined change in slope point in time.
Type:
Application
Filed:
June 1, 2018
Publication date:
December 5, 2019
Applicant:
Otonexus Medical Technologies, Inc.
Inventors:
Mark A Moehring, Jay A. Chesavage, Weigang WANG, Dong Ho Choi
Abstract: An otoscope uses differential reflected response of optical energy at an absorption range and an adjacent wavelength range to determine the presence of water (where the wavelengths are water absorption wavelength and adjacent non-absorption excitation wavelengths). In another example of the invention, the otoscope utilizes OCT in combination with absorption and non-absorption range for bacteria and water.
Type:
Grant
Filed:
May 31, 2017
Date of Patent:
July 23, 2019
Assignee:
OtoNexus Medical Technologies, Inc.
Inventors:
Jay A. Chesavage, Mark A. Moehring, George A Gates, Daniel Kreindler
Abstract: An OCT apparatus and method for characterization of a fluid adjacent to a tympanic membrane has a low coherence source which is coupled to a splitter which has a measurement path and a reference path. The reference path is temporally modulated for length, and the combined signals from the reference path and the measurement path are applied to a detector. The detector examines the width of the response and the time variation when an optional excitation source is applied to the tympanic membrane, the width of the response and the time variation forming a metric indicating the viscosity of a fluid adjacent to the tympanic membrane being measured.
Abstract: An ultrasound signal processor uses an excitation generator to cause displacement of a tympanic membrane while a series of ultrasound pulses are applied to the tympanic membrane. Phase differences between a transmitted signal and received signal are examined to determine the movement of the tympanic membrane in response to the applied excitation. An examination of the phase response of the tympanic membrane provides a determination as to whether the fluid type behind the tympanic membrane is one of: no fluid, serum fluid, or purulent fluid.
Type:
Application
Filed:
July 13, 2015
Publication date:
January 19, 2017
Applicant:
OTONEXUS MEDICAL TECHNOLOGIES, INC.
Inventors:
Mark A. MOEHRING, Jay A. CHESAVAGE, Rahul SINGH, George Gates, Danny Kreindler