Pulse wave analysis device
First Claim
1. A pulse wave analysis device comprising:
- pressurization means for applying pressure to a body surface of a living body;
pressure detection means for detecting pressure applied at the body surface;
memory means for storing data of pulse wave variation patterns which represent changes in amplitude levels of said pulse wave corresponding to changes in the pressure;
pulse wave detection means for detecting pulse waves through a pulse wave detection site on the body surface where the pressurization means applies pressure; and
means for identifying pulse wave variation patterns, based on the pulse waves detected by the pulse wave detection means, and on the data stored in the memory means, the pulse wave variation patterns being changes in amplitude levels of said pulse wave corresponding to changes in the pressure applied at the detection site.
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Accused Products
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.
135 Citations
7 Claims
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1. A pulse wave analysis device comprising:
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pressurization means for applying pressure to a body surface of a living body; pressure detection means for detecting pressure applied at the body surface; memory means for storing data of pulse wave variation patterns which represent changes in amplitude levels of said pulse wave corresponding to changes in the pressure; pulse wave detection means for detecting pulse waves through a pulse wave detection site on the body surface where the pressurization means applies pressure; and means for identifying pulse wave variation patterns, based on the pulse waves detected by the pulse wave detection means, and on the data stored in the memory means, the pulse wave variation patterns being changes in amplitude levels of said pulse wave corresponding to changes in the pressure applied at the detection site. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A pulse wave analysis device comprising:
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pressurization means for applying pressure at a detection site on a living body; pressure detection means for detecting pressure applied at the detection site on the body; pulse wave detection means for detecting pulse waves at the detection site on the body; pressure control means for stepwise varying the pressure applied at the detection site by the pressurization means; control means for setting the pressure applied at the detection site at each of plural target values; and diagnosis means for diagnosing the pulse waves detected at the pressure determined by the control means to detect the characteristics of the body on the basis of changes in amplitude levels of said pulse wave corresponding to changes in the pressure applied at the detection site.
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Specification