Diagnostic apparatus for analyzing arterial pulse waves

• US 20040267141A1
• Filed: 06/16/2004
• Published: 12/30/2004
• Est. Priority Date: 01/07/1993
• Status: Active Grant

• Current Assignee: Hiroshi Kasahara, Hitoshi Ishiyama, Kazuhiko Amano, Kazuo Kodama
• Original Assignee: Hiroshi Kasahara, Hitoshi Ishiyama, Kazuhiko Amano, Kazuo Kodama
• Inventors: Amano, Kazuhiko, Kasahara, Hiroshi, Kodama, Kazuo, Ishiyama, Hitoshi
• Granted Patent: US 7,465,274 B2
• Time in Patent Office: Days
• US Class Current: 600/500
• CPC Class Codes: A61B 2562/0247 Pressure sensors
• CPC Class Codes: A61B 2562/043 in a linear array
• CPC Class Codes: A61B 5/021 Measuring pressure in heart or blood vessels A61B5/0205 takes precedence
• CPC Class Codes: A61B 5/02108 from analysis of pulse wave characteristics
• CPC Class Codes: A61B 5/4854 Diagnosis based on concepts of traditional oriental medicine
• CPC Class Codes: A61B 5/6806 Gloves
• CPC Class Codes: A61B 5/7257 using Fourier transforms
• CPC Class Codes: G16H 10/60 for patient-specific data, e.g. for electronic patient records
• CPC Class Codes: G16H 15/00 ICT specially adapted for medical reports, e.g. generation or transmission thereof
• CPC Class Codes: G16H 40/63 for local operation
• CPC Class Codes: G16H 50/50 for simulation or modelling of medical disorders

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

1. 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.

2. A pulse wave analyzing apparatus as in claim 1, 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”

.

3. A pulse wave analyzing apparatus as in claim 1, 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.

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

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.

6. A diagnostic apparatus as in claim 5, 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”

.

7. A diagnostic apparatus as in claim 5, 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.

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

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

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

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

12. 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.

13. A diagnostic apparatus as in claim 12, 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.

14. 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.