RESPIRATORY WAVEFORM ANALYZER
First Claim
1. A respiratory waveform analyzer, operable to analyze a respiratory waveform, which is generated based on a temporal change of a concentration of a component in respiratory gas of a subject, the respiratory waveform analyzer comprising:
- a respiratory gas concentration generator which generates a concentration signal based on an output signal from a sensor that is placed to measure the concentration of the component;
a flatness calculator which calculates a flatness indicative of flat degree of the respiratory waveform based on a temporal change of the concentration signal; and
a reliability calculator which calculates a reliability of the respiratory waveform based on the flatness and the concentration signal.
1 Assignment
0 Petitions
Accused Products
Abstract
A respiratory waveform analyzer, operable to analyze a respiratory waveform, which is generated based on a temporal change of a concentration of a component in respiratory gas of a subject, includes: a respiratory gas concentration generator which generates a concentration signal based on an output signal from a sensor that is placed to measure the concentration of the component; a flatness calculator which calculates a flatness indicative of flat degree of the respiratory waveform based on a temporal change of the concentration signal; and a reliability calculator which calculates a reliability of the respiratory waveform based on the flatness and the concentration signal.
29 Citations
20 Claims
-
1. A respiratory waveform analyzer, operable to analyze a respiratory waveform, which is generated based on a temporal change of a concentration of a component in respiratory gas of a subject, the respiratory waveform analyzer comprising:
-
a respiratory gas concentration generator which generates a concentration signal based on an output signal from a sensor that is placed to measure the concentration of the component; a flatness calculator which calculates a flatness indicative of flat degree of the respiratory waveform based on a temporal change of the concentration signal; and a reliability calculator which calculates a reliability of the respiratory waveform based on the flatness and the concentration signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A respiratory waveform analyzer, operable to analyze a respiratory waveform, which is generated based on a temporal change of a concentration of a component in respiratory gas of a subject, the respiratory waveform analyzer comprising:
-
a respiratory gas concentration detector which converts a analog output signal from a sensor that is placed to detect the concentration of the component, to a digital respiratory gas signal; a respiratory gas concentration calculator which generates a respiratory waveform signal based on the respiratory gas signal from the respiratory gas concentration detector; and a concentration detection value corrector which corrects the respiratory waveform signal corresponding to the respiratory gas signal, in accordance with a ratio of the respiratory gas signal to a predetermined reference value.
-
-
15. A respiratory waveform analyzer, operable to analyze a respiratory waveform, which is generated based on a temporal change of a concentration of a component in respiratory gas of a subject, the respiratory waveform analyzer comprising:
-
a respiratory airway adaptor in which the respiratory gas of the subject flows, the respiratory airway adaptor provided with a sensor that measures the concentration of the component to output a signal; a respiratory gas concentration generator which generates a concentration signal based on the signal output by the sensor, the concentration signal indicating degree of the concentration; and a liquid detector which detects a liquid in the respiratory airway adaptor based on the concentration signal. - View Dependent Claims (16, 17, 18, 19, 20)
-
Specification