Pulse wave analysis device
First Claim
1. A pulse wave analysis device comprising:
- pressure detection means for detecting pressure applied at a detection site on a living body;
pulse wave detection means for detecting pulse waves at the detection site of the body; and
means for identifying, from among a plurality of predetermined patterns, a variation pattern of the pulse waves detected by the pulse wave detection means on the basis of changes in amplitude levels of said pulse waves corresponding to changes in the pressure applied at the detection site.
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Abstract
A pulse wave analysis device for analyzing the condition of a human body is disclosed. A cuff band is wrapped around the tip of the second finger of a subject'"'"'s hand. When the operator depresses the beginning-of-measurement key, the finger tip is pressed at various pressures by means of an air pump and a pressure sensor. Pulse wave signals at different pressure values are automatically measured by an optical fingertip plethysmogram sensor. The signals are transmitted to a CPU through a BPF, an amplifier, and an ADC. The CPU performs FFT analyses on the signals and determines to which pattern from among the patterns stored in a ROM the pattern level of the pulse wave spectrum for a given pressure value is closest, and displays the result on a display unit as a test result indicating the viscoelasticity of the subject'"'"'s peripheral circulation tissue.
56 Citations
12 Claims
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1. A pulse wave analysis device comprising:
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pressure detection means for detecting pressure applied at a detection site on a living body; pulse wave detection means for detecting pulse waves at the detection site of the body; and means for identifying, from among a plurality of predetermined patterns, a variation pattern of the pulse waves detected by the pulse wave detection means on the basis of changes in amplitude levels of said pulse waves corresponding to changes in the pressure applied at the detection site. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification