Patent ID: 7766841
Filing Date: 2010-08-03
Classification: A61B

Abstract:
1. A sleep diagnosis device comprising: a three-dimensional acceleration sensor, a posture detecting means for detecting a posture of a patient from a DC component of said three-dimensional acceleration sensor, and a breathing movement detecting means for detecting a breathing movement of the patient from an AC component of said three-dimensional acceleration sensor, wherein said breathing movement detecting means includes: a one-dimensional converting means for generating one-dimensional acceleration data from the three-dimensional acceleration data obtained by said three-dimensional acceleration sensor; an inflection point detecting means for detecting inflection points of a variation of said one-dimensional acceleration data from the one-dimensional acceleration data generated by said one-dimensional converting means; and a breathing movement calculating means for calculating the breathing movement of the patient from the inflection points of the variation of the one-dimensional acceleration data obtained by said inflection point detecting means.