Patent · US Active

Respiratory apparatus with improved flow-flattening detection

US8707953B2 · kind B2 · utility

9Cited by

64References

40Claims

0Family size

Assignee

ResMed Corp. · AU

Inventor

Peter John Deacon Wickham · Sydney, AU

Key dates

Filing date	Aug 15, 2012
Grant date	Apr 29, 2014
Priority date	—
Expiry date	Aug 15, 2032

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61M2016/0039
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

In a respiratory apparatus for treatment of sleep apnea and other disorders associated with an obstruction of a patient's airway and which uses an airflow signal, an obstruction index is generated which detects the flattening of the inspiratory portion of the airflow. The obstruction index is used to differentiate normal and obstructed breathing. The obstruction index is based upon different weighting factors applied to sections of the airflow signal thereby improving sensitivity to various types of respiration obstructions.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.