公开(公告)号：US11751817B2

公开(公告)日：2023-09-12

申请号：US15701091

申请日：2017-09-11

Applicant: UNIVERSITY HEALTH NETWORK

Inventor： T. Douglas Bradley ,  Geoffrey Roy Fernie ,  Hisham Alshaer ,  Ahmad Ziad Akl

IPC: A61B5/00 ,  A61B7/00

CPC classification number: A61B5/7282 ,  A61B5/7475 ,  A61B7/003 ,  A61B5/4818 ,  A61B5/6803

Abstract: Disclosed herein are breathing disorder identification, characterization and diagnosis methods, devices and systems. In general the disclosed methods, devices and systems may rely on the characterization of breath sound amplitudes, periodic breath sounds and/or aperiodic breath sounds to characterize a breathing disorder as obstructive (e.g. obstructive sleep apnea—OSA) or non-obstructive (e.g. central sleep apnea—CSA).

公开(公告)号：US10278639B2

公开(公告)日：2019-05-07

申请号：US14694198

申请日：2015-04-23

Applicant: UNIVERSITY HEALTH NETWORK

Inventor： Hisham Alshaer ,  T. Douglas Bradley

IPC: A61B5/08 ,  A61B5/00 ,  A61B7/00

Abstract: Described herein are various embodiments of a method and system for sleep detection. For example, in one embodiment, a method is described for automatically characterizing digitized breath sounds recorded from a subject over time as indicative of the subject being one of asleep and awake. This method comprises identify individual breathing cycles in a given segment of the recorded breath sounds; calculating one or more preset breathing cycle characteristics from the identified breathing cycles; evaluating a relative regularity of the calculated characteristics for the given segment; and upon the relative regularity satisfying a preset high regularity condition, outputting a sleep status indicator that the subject was likely asleep during the segment, otherwise outputting a wake indicator that the subject was likely awake during the segment.

公开(公告)号：US09949667B2

公开(公告)日：2018-04-24

申请号：US13710160

申请日：2012-12-10

Applicant: UNIVERSITY HEALTH NETWORK

Inventor： Hisham Alshaer ,  Geoffrey Roy Fernie ,  T. Douglas Bradley ,  Oleksandr Igorovich Levchenko ,  Steven M. Pong

IPC: A61B5/087 ,  A61B7/00 ,  A61B5/097 ,  A61B5/00

CPC classification number: A61B5/087 ,  A61B5/097 ,  A61B5/4818 ,  A61B5/7257 ,  A61B7/003

Abstract: Disclosed is a mask for use in respiratory monitoring and/or diagnostics. The mask comprises at least one transducer responsive to sound and/or airflow for generating a signal, and a support structure to rest on the subject's face. In one embodiment, the support structure comprises two or more limbs that provide a transducer support for supporting the transducer at a distance from a nose and mouth area, allowing monitoring via the transducer of sound and/or airflow produced by the subject. Also described is a mask comprising a transducer responsive to airflow for generating a signal and a support structure to rest on the subject's face and extend outwardly over a nose and mouth area to provide a transducer support supporting the transducer at a distance from a nose and mouth area of the subject's face and at a preset orientation, for monitoring via the transducer of airflow produced by the subject.