Acoustic otoscope
US11445942B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2018 |
| Grant date | Sep 20, 2022 |
| Priority date | — |
| Expiry date | Aug 26, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/7246
- WIPO fieldMedical technology
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.