Apparatus and method for electronically predicting pleural pressure from pulse wave signals
First Claim
1. A pressure predicting apparatus for predicting pleural or esophageal pressure based upon pulse wave signals which are continuously connected to each other in a time sequential manner, the apparatus comprising:
- first means for acquiring a first variation signal indicative of a condition of a variation contained in the pulse wave signals based upon the pulse wave signals;
second means for acquiring a second variation signal representative of a condition of a variation contained in the first variation signal based upon the first variation signal; and
prediction means for predicting a pleural pressure based on a difference between the first variation signal and the second variation signal.
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Abstract
A pleural pressure is predicted from pleural pressure based upon pulse wave signals, which are continuously produced and picked up in a time sequential manner. A first variation signal indicative of a condition of a variation contained in the pulse wave signals is acquired based upon the pulse wave signals. A second variation signal representative of a condition of a variation contained in the first variation signal is acquired based upon the first variation signal. The pleural pressure is predicted based on a difference between the first variation signal and the second variation signal.
20 Citations
27 Claims
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1. A pressure predicting apparatus for predicting pleural or esophageal pressure based upon pulse wave signals which are continuously connected to each other in a time sequential manner, the apparatus comprising:
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first means for acquiring a first variation signal indicative of a condition of a variation contained in the pulse wave signals based upon the pulse wave signals;
second means for acquiring a second variation signal representative of a condition of a variation contained in the first variation signal based upon the first variation signal; and
prediction means for predicting a pleural pressure based on a difference between the first variation signal and the second variation signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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16. A pressure predicting method for predicting pleural or esophageal pressure based upon pulse wave signals, which are continuously connected to each other in a time sequential manner, the method comprising steps of:
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acquiring a first variation signal indicative of a condition of a variation contained in pulse wave signals;
acquiring a second variation signal representative of a condition of a variation contained in the first variation signal; and
predicting a pleural pressure based on a difference between the first variation signal and the second variation signal. - View Dependent Claims (27)
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Specification