Patent ID: 9414771
Filing Date: 2016-08-16
CPC Classification: A61B

Claim Text:
1. A system for monitoring respiration of a subject, comprising: a first sensor system configured for substantially continuously determining a first anatomical characteristic representing a first linear displacement of the subject's rib cage in a first orientation; a second sensor system configured for substantially continuously determining a second anatomical characteristic representing a first linear displacement of the subject's abdomen in said first orientation, and for substantially continuously determining a third anatomical characteristic representing a first axial displacement of the subject's chest wall; a posture sensor configured for detecting when the subject is in one of a plurality of orientations; a memory configured to store a first empirical relationship that determines a rib cage volume-motion coefficient, an abdomen volume-motion coefficient, and a chest wall volume-motion coefficient, and a second empirical relationship that determines a ventilation characteristic as a function of said first, second and third anatomical characteristics and said rib cage, abdomen and chest wall volume-motion coefficients; and a processor configured for determining said ventilation parameter with said second empirical relationship and for determining a first ventilation parameter associated with said detected subject orientation, wherein one of the first and second sensor systems acquires a base-line ventilation characteristic, and a third empirical relationship correlates said acquired base-line ventilation characteristic to a ventilation parameter determined with said second empirical relationship.