Method for analysis of single pulse pressure waves
First Claim
1. A method for analyzing pressure signals derivable from pressure measurements on or in a body of a human being or animal, comprising the steps of sampling said signals at specific intervals, and converting thus sampled pressure signals into pressure-related digital data with a time reference, wherein for selectable time sequences the method comprises the further steps of:
- a) identifying from said digital data single pressure waves related to cardiac beat-induced pressure waves, b) computing time sequence parameters of said single pressure waves during individual of said time sequences, and c) establishing an analysis output selected from one or more of said time sequence parameters of said single pressure waves during individual of said time sequences;
c1) balanced position of amplitude (Δ
P)/latency (Δ
T) combinations, c2) balanced position of rise time coefficients (Δ
P/Δ
T), c3) absolute mean pressure for said single pressure waves of said time sequence.
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Abstract
This invention relates to a method for analysing pressure-signals derivable from pressure measurements on or in a body of a human being or animal, comprising the steps of identifying during given time sequences in a series of time sequences the single pressure waves, including related parameters [pressure amplitude ΔP, latency (ΔT), rise time coefficient (ΔP/ΔT)], determining numbers of single pressure waves with pre-selected combinations of two or more of said single pressure wave parameters during said time sequence. For the time sequences is further determined the balanced positions of single wave parameters. Two-dimensional values of balanced position may be presented as a one dimensional value after weighting of the matrix cells. The signal processing method may be used for more optimal detection of single pressure waves by means of non-invasive sensor devices.
17 Citations
35 Claims
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1. A method for analyzing pressure signals derivable from pressure measurements on or in a body of a human being or animal, comprising the steps of sampling said signals at specific intervals, and converting thus sampled pressure signals into pressure-related digital data with a time reference,
wherein for selectable time sequences the method comprises the further steps of: -
a) identifying from said digital data single pressure waves related to cardiac beat-induced pressure waves, b) computing time sequence parameters of said single pressure waves during individual of said time sequences, and c) establishing an analysis output selected from one or more of said time sequence parameters of said single pressure waves during individual of said time sequences;
c1) balanced position of amplitude (Δ
P)/latency (Δ
T) combinations,c2) balanced position of rise time coefficients (Δ
P/Δ
T),c3) absolute mean pressure for said single pressure waves of said time sequence. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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Specification