Abstract: Automated methods provide hypopnea detection for determining a hypopnea event and/or a severity of a hypopnea event. In some embodiments, a calculated short-term variance of a measured respiratory flow signal are compared to first and second proportions of a calculated long-term variance of the measured flow signal. A detection of the hypopnea may be indicated if the first measure falls below and does not exceed a range of the first and second proportions during a first time period. In some embodiments, a hypopnea severity measure is determined by automated measuring of an area bounded by first and second crossings of a short-term measure of ventilation and a proportion of a long-term measure. The detection methodologies may be implemented for data analysis by a specific purpose computer, a detection device that measures a respiratory airflow or a respiratory treatment apparatus that provides a respiratory treatment regime based on the detected hypopneas.
Abstract: A patient interface is configured to deliver a flow of pressurized breathable gas to a patient's airways. The patient interface includes a central portion with an opening configured to deliver the pressurized breathable gas to the patient's nares. A first stabilizing portion extends from the central portion and is structured to engage an outer side of a respective one of the patient's nostrils. A second stabilizing portion is opposite the first stabilizing portion and extends from the central portion. In addition, the second stabilizing surface is structured to engage an outer side of a respective one of the patient's nostrils. The central portion, the first stabilizing portion and the second stabilizing portion cooperate to form a U-shape configured to cradle the patient's nose so that the tip of the patient's nose remains exposed when the patient interface is mounted on the patient's face.
Type:
Grant
Filed:
August 22, 2018
Date of Patent:
December 24, 2019
Assignee:
RedMed Pty Ltd
Inventors:
Michiel Kooij, Scott Alexander Howard, Justin John Formica, Gerard Michael Rummery, Renee Frances Flower, Adam Francis Barlow, Joel Edward Gibson, Damien Julian Mazzone, Aaron Samuel Davidson, Bernd Christoph Lang, Achim Biener, Michael John Reid, Dieter Heidmann
Abstract: Automated methods provide leak detection that may be implemented in a respiratory treatment apparatus. In some embodiments, the detection apparatus may automatically determine and score different types of leak events during a treatment session, including, for example, continuous mouth leak events and valve-like mouth leak events. The detection methodologies may be implemented as a data analysis of a specific purpose computer or a detection device that measures a respiratory airflow or a respiratory treatment apparatus that provides a respiratory treatment regime based on the detected leak. In some embodiments, the leak detector may determine and report a leak severity index. Such an index may combine data that quantifies different types of leak events.
Type:
Grant
Filed:
July 28, 2011
Date of Patent:
June 25, 2019
Assignee:
RedMed Pty Ltd
Inventors:
Dushyant Rao, Jeffrey Peter Armitstead, Dinesh Ramanan
Inventors:
Andrew Roderick Bath, Mark Bertinetti, Clementine Le Loc'h, Justin John Formica, Matthew Rolf Harrington, Barton John Kenyon, Dimitri Marco Maurer, Joseph Samuel Ormrod, Henri Spaile, Hargopal Verma, Justin Peter Wagemakers, Chengwei Zhu