# US 7,465,274 B2 · Diagnostic apparatus for analyzing arterial pulse waves

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- Number: US 7,465,274 B2
- Document ID: US7465274B2
- Status: Granted
- Kind: B2
- Application number: 10/869,587
- Filed: 2004-06-16
- Published: 2004-12-30
- Granted: 2008-12-16
- Earliest claimed: 1993-01-07
- Assignees: Seiko Epson Corporation
- Inventors: Kazuhiko Amano; Hiroshi Kasahara; Hitoshi Ishiyama; Kazuo Kodama
- Web page: https://patentgrep.com/patent/US7465274B2

## CPC

- A61B 5/4854: {Diagnosis based on concepts of alternative medicine, e.g. homeopathy or non-orthodox}
- A61B 5/021: Measuring pressure in heart or blood vessels
- A61B 5/02108: {from analysis of pulse wave characteristics}
- A61B 5/6806: {Gloves}
- G16H 15/00: ICT specially adapted for medical reports, e.g. generation or transmission thereof
- G16H 40/63: for local operation
- A61B 5/7257: {using Fourier transforms}
- A61B 2562/0247: Pressure sensors
- A61B 2562/043: in a linear array
- G16H 10/60: for patient-specific data, e.g. for electronic patient records
- G16H 50/50: for simulation or modelling of medical disorders
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- G16H: HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA

## Abstract

A pulse waveform of a living body is detected and is analyzed using peak point data or timing data to perform a diagnosis of a condition of the body.

## Claims

### Claim 1

A pulse wave analyzing apparatus comprising: p1 pulse wave detecting means for detecting a pulse waveform from a living body; and
analyzing means for outputting at least one of peak point data or timing data of the pulse waveform detected by said pulse wave detecting means; and
wherein the analyzing means comprises:
differential means for differentiating the pulse waveform detected by the pulse wave detecting means; inflection detecting means for detecting a timing when an output from said differential means is “0”;
count means for counting a sampling clock; and
means for outputting peak point data or timing data for waveform parameters on the basis of the count value counted by the count means and the amplitude of pulse waveform detected by the detecting means when the output from the differential means is “0”.

### Claim 2 (depends on 1)

A pulse wave analyzing apparatus in accordance with claim 1, wherein said living body is a living human body.

### Claim 3

A pulse wave analyzing apparatus comprising:
pulse wave detecting means for detecting a pulse waveform from a living body; and
analyzing means for outputting at least one of peak point data or timing data of the pulse waveform detected by said pulse wave detecting means
wherein said analyzing means comprises:
display means for displaying the pulse waveform detected by said pulse wave detecting means;
designating means for designating a peak point of the pulse waveform displayed in display means; and
means for outputting peak point data or timing data for waveform parameters on the basis of the peak point designated by the designating means.

### Claim 4 (depends on 3)

A pulse wave analyzing apparatus in accordance with claim 3, wherein said living body is a living human body.

### Claim 5

A diagnostic apparatus comprising:
analyzing means for creating waveform parameters from information representing a pulse wave of a living body; and
diagnostic means for performing a diagnosis of a condition of the living body on the basis of the waveform parameters,
wherein said analyzing, means outputs as waveform parameters, peak point data or timing data of the pulse wave obtained from the living body; and
wherein said analyzing means comprises:
differential means for differentiating the pulse waveform parameters;
inflection detecting means for detecting a timing when an output from said differential means is “0”; and
count means for counting a sampling clock; and
means for outputting peak point data or timing data for the pulse waveform parameters on the basis of the count value counted by the count means and the amplitude of the pulse waveform parameters when the output from said differential means is “0”.

### Claim 6 (depends on 5)

A diagnostic apparatus as in claim 5, wherein the diagnostic means perform a diagnosis of a stress level of a living body.

### Claim 7 (depends on 5)

A diagnostic apparatus as in claim 5, wherein the stress level is a physiological stress level.

### Claim 8 (depends on 5)

A diagnostic apparatus as in claim 5, wherein the stress level is a psychological stress level.

### Claim 9 (depends on 5)

A diagnostic apparatus as in claim 5, wherein the diagnostic means performs a diagnosis of a physiological age of said living body.

### Claim 10 (depends on 5)

A diagnostic apparatus as in claim 5, further comprising an inputting means for inputting psychosomatic fatigue levels that are quantified as to the degree of matching with a patient having symptoms that are prominent at high stress levels, and wherein the diagnostic apparatus performs a diagnosis of stress level on the basis of both the waveform parameters and the psychosomatic fatigue levels.

### Claim 11 (depends on 10)

A diagnostic apparatus as in claim 10, wherein said diagnostic means outputs a message asking the degree of matching with the patient having symptoms that are prominent at high stress levels, and further comprising interactive input means for receiving an answer to the message, and said psychosomatic fatigue level is computed on the basis of the answer received by the interactive input means.

### Claim 12 (depends on 5)

A diagnostic apparatus as in claim 5, further comprising a reading means for reading out both psychosomatic fatigue levels that are quantified as to the degree of matching with a patient having symptoms that are prominent at high stress levels and the waveform parameters from a storage media, and wherein the diagnostic means performs a diagnosis on the basis of the read information.

### Claim 13

A diagnostic apparatus comprising:
analyzing means for creating waveform parameters from information representing a pulse wave of a living body; and
diagnostic means for performing a diagnosis of a condition of the living body on the basis of the waveform parameters,
wherein said analyzing means outputs as waveform parameters, peak point data or timing data of the pulse wave obtained from the living body; and
wherein said analyzing means comprises:
display means for displaying the pulse waveform parameters; and
designating means for designating a peak point of the pulse waveform parameters displayed in the display means, and
means for outputting peak point data or timing data for the waveform parameters on the basis of the peak point designated by the designating means.

### Claim 14 (depends on 13)

A diagnostic apparatus as in claim 13, wherein the diagnostic means perform a diagnosis of a stress level of a living body.

### Claim 15 (depends on 13)

A diagnostic apparatus as in claim 13, wherein the stress level is a physiological stress level.

### Claim 16 (depends on 13)

A diagnostic apparatus as in claim 13, wherein the stress level is a psychological stress level.

### Claim 17 (depends on 13)

A diagnostic apparatus as in claim 13, wherein the diagnostic means performs a diagnosis of a physiological age of said living body.

### Claim 18 (depends on 13)

A diagnostic apparatus as in claim 13, further comprising an inputting means for inputting psychosomatic fatigue levels that are quantified as to the degree of matching with a patient having symptoms that are prominent at high stress levels, and wherein the diagnostic apparatus performs a diagnosis of stress level on the basis of both the waveform parameters and the psychosomatic fatigue levels.

### Claim 19 (depends on 18)

A diagnostic apparatus as in claim 18, wherein said diagnostic means outputs a message asking the degree of matching with the patient having symptoms that are prominent at high stress levels, and further comprising interactive input means for receiving an answer to the message, and said psychosomatic fatigue level is computed on the basis of the answer received by the interactive input means.

### Claim 20 (depends on 13)

A diagnostic apparatus as in claim 13, further comprising a reading means for reading out both psychosomatic fatigue levels that are quantified as to the degree of matching with a patient having symptoms that are prominent at high stress levels and the waveform parameters from a storage media, and wherein the diagnostic means performs a diagnosis on the basis of the read information.