US 2019/0099125 A1 · METHOD AND APPARATUS FOR NON-INVASIVE DETECTION OF PHYSIOLOGICAL AND PATHO-PHYSIOLOGICAL SLEEP CONDITIONS

Abstract

Method and apparatus for the non-invasive detection of certain breathing conditions, certain sleep disordered breathing conditions, or assessment of the person's myocardial contractility and its dynamic changes, comprising steps of: determining the sleep or wake status of a person, monitoring circulatory pulse waveforms and amplitude normalized pulse wave systolic upstrokes recorded from a person's body and determining at least one index of the upstroke to characterize the strength of the contraction of the heart during the systolic upstroke during a series of heart beats relating to a breathing cycle or an absent anticipated breathing cycle of the patient, and determining that a certain change in a breathing condition, a sleep disordered breathing condition, or assessment of the person's myocardial contractility and its dynamic changes, has occurred when a specific change in the sleep disordered breathing analysis, and the at least one index of the upstroke has been detected.

Claims30

Dependent claims

A method for the non-invasive detection of certain medical conditions and physiological states, comprising the steps of:

monitoring circulatory pulse waveforms recorded from a person's body;
monitoring circulatory pulse systolic upstroke waveforms recorded from a person's body;
normalizing said circulatory pulse systolic upstroke waveforms such that the magnitude of the trough to peak amplitude of each such systolic upstroke is set to a predetermined value;
determining at least one index of the upstroke to characterize the strength of the contraction of the heart during the systolic upstroke phase of a heart beat;
determining changes of said at least one index of the upstroke to characterize the strength of the contraction of the heart during a series of heart beats related to a breathing cycle or to an absent anticipated breathing cycle of the patient,
and determining the certain medical conditions and physiological states based on changes of the at least one index of the upstroke related to a breathing cycle of the patient or to an absent anticipated breathing cycle.

3 more elements

A system for the non-invasive detection of certain medical conditions and physiological states in a person, comprising:

a device that monitors circulatory pulse waveforms recorded from the person's body and monitors circulatory pulse systolic upstroke waveforms recorded from the person's body;
wherein the device:
normalizes said circulatory pulse systolic upstroke waveforms such that the magnitude of the trough to peak amplitude of each such systolic upstroke is set to a predetermined value;
determines at least one index of the upstroke to characterize the strength of the contraction of the heart during the systolic upstroke phase of a heart beat;
determines changes of said at least one index of the upstroke during a series of heart beats wherein said at least one upstroke index is related to the breathing cycle, or to an absent anticipated breathing cycle, of the person;
and,
determines that the certain medical conditions and physiological states based upon the at least one index of the upstroke has been detected.

4 more elements

Dependencies are inferred from the claim text.

Method and apparatus for non-invasive detection of physiological and patho-physiological sleep conditions

Life of this patent

Method and apparatus for non-invasive detection of physiological and patho-physiological sleep conditions

Life of this patent

Abstract

Claims30