The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 27, 2011
Filed:
Jul. 19, 2006
Yousufali Dalal, St. Louis Park, MN (US);
Yachuan Pu, Minneapolis, MN (US);
John D. Hatlestad, Maplewood, MN (US);
Yousufali Dalal, St. Louis Park, MN (US);
Yachuan Pu, Minneapolis, MN (US);
John D. Hatlestad, Maplewood, MN (US);
Cardiac Pacemakers, Inc., St. Paul, MN (US);
Abstract
This document discusses, among other things, systems and methods for determining sleep state, such as awake, sleeping, non-REM sleep, or REM sleep. Respiration and heart contractions are monitored. A cardio-respiratory ratio such as beats per breath is computed and used in the sleep state determination. Other information, such as heart rate variability (HRV), posture, and activity level can also be used in the sleep state determination. The sleep state information can be used to qualify or trigger storage of other physiological sensor data, or to permit remote sleep study monitoring of a subject, or to control or adjust one or more monitoring, diagnostic, or therapy algorithms, such as, for example a continuous positive airflow pressure (CPAP) device.