EP0249243A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Electronic blood pressure meter
Assignee: Kai Isao
•
Filing: 1987-06-12
•
Granted: —
•
Expires: 2007-06-12
Abstract
Abstract An electronic blood pressure meter, equipped with the functions of computing at least a single relative pulse wave amplitude value in relation with a maximum pulse wave amplitude value, computing a blood pressure value from the cuff pressure when an amplitude of the pulse wave signal has coincided with the relative amplitude value during a change in the amplitude value of the pulse wave signal, and using the reference pressure value thus obtained in accordance with a certain arithmetic formula. If desired, a different process may be selected for determining a blood pressure depending on an initial cuff pressure. This electronic blood pressure allows a measurement to be completed in a very short time and minimizes the discomfort of the person whose blood pressure is to measured through reduction of the maximum cuff pressure. Yet the mathematical formula can be reduced to a simple arithmetic algorithm and is therefore easy to implement.
Inventors
- 👤 Osamu Omron Tateisi Electronics Co. Shirasaki
- 👤 Hiroshi Omron Tateisi Electronics Co. Ogawa
- 👤 Yoshinori Omron Tateisi Electronics Co. Miyawaki
- 👤 Kazuhiro Omron Tateisi Electronics Co. Matumoto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 09:22
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/02; A61B5/021; A61B5/022; A61B5/02108; A61B5/02116
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
213 words
An electronic blood pressure meter, comprising a cuff, a pressurization means for pressurizing the cuff, a pressure detection means for detecting a fluid pressure inside the cuff, a pulse wave detection means for detecting a pulse wave component contained in an output signal of the pressure detecting means, a pulse wave amplitude value computing means for computing a pulse wave amplitude value from the pulse wave component detected by the pulse wave component detecting means, and a blood pressure determining means for determining a systolic pressure and a diastolic pressure from an output signal of the pulse wave amplitude computing means, further comprising: a relative amplitude value computing means for computing at least a single relative pulse wave amplitude value in relation with a maximum pulse wave amplitude value obtained by the pulse wave amplitude value computing means; a reference pressure value computing means for computing a blood pressure value from the cuff pressure when an amplitude of the pulse wave signal has coincided with the relative amplitude value during a change in the amplitude value of the pulse wave signal; and a blood pressure computing means for computing a blood pressure value using the reference pressure value obtained by the reference pressure value computing means in accordance with a certain arithmetic formula.
Claim 2
Dependent Claim
213 words
An electronic blood pressure meter, comprising a cuff, a pressurization means for pressurizing the cuff, a pressure detection means for detecting a fluid pressure inside the cuff, a pulse wave detection means for detecting a pulse wave component contained in an output signal of the pressure detecting means, a pulse wave amplitude value computing means for computing a pulse wave amplitude value from the pulse wave component detected by the pulse wave component detecting means, and a blood pressure determining means for determining a systolic pressure and a diastolic pressure from an output signal of the pulse wave amplitude computing means, further comprising: a relative amplitude value computing means for computing at least a single relative pulse wave amplitude value in relation with a maximum pulse wave amplitude value obtained by the pulse wave amplitude value computing means; a reference pressure value computing means for computing a blood pressure value from the cuff pressure when an amplitude of the pulse wave signal has coincided with the relative amplitude value during a change in the amplitude value of the pulse wave signal; and a blood pressure computing means for computing a blood pressure value using the reference pressure value obtained by the reference pressure value computing means in accordance with a certain arithmetic formula.
Claim 3
Dependent Claim
89 words
An electronic blood pressure meter as defined in claim 1, wherein the reference pressure value used in the step of computing the systolic pressure includes the diastolic pressure obtained during a same measurement process according to an arbitrary but different method and a second reference blood pressure which is different from the former, the systolic pressure being determined by adding a fraction of a pressure difference between the diastolic pressure and the second reference blood pressure to either one of the diastolic pressure and the second reference blood pressure.
Claim 4
Dependent Claim
89 words
An electronic blood pressure meter as defined in claim 1, wherein the reference pressure value used in the step of computing the diastolic pressure includes the systolic pressure obtained during a same measurement process according to an arbitrary but different method and a second reference blood pressure which is different from the former, the diastolic pressure being determined by subtracting a fraction of a pressure difference between the systolic pressure and the second reference blood pressure to either one of the systolic pressure and the second reference blood pressure.
Claim 5
Dependent Claim
84 words
An electronic blood pressure meter as defined in claim 1, wherein the relative amplitude value which is used in the process of obtaining the systolic pressure is a pulse wave amplitude value at an arbitrary cuff pressure which is higher than a cuff pressure at which the maximum pulse wave amplitude is detected, and a ratio of the pulse wave amplitude value at the arbitrary cuff pressure to the maximum pulse wave amplitude value is used in the process of computing the diastolic pressure.
Claim 6
Dependent Claim
84 words
An electronic blood pressure meter as defined in claim 1, wherein the relative amplitude value which is used in the process of obtaining the systolic pressure is a pulse wave amplitude value at an arbitrary cuff pressure which is lower than a cuff pressure at which the maximum pulse wave amplitude is detected, and a ratio of the pulse wave amplitude value at the arbitrary cuff pressure to the maximum pulse wave amplitude value is used in the process of computing the diastolic pressure.
Claim 7
Dependent Claim
30 words
An electronic blood pressure meter as defined in any one of preceding claims, wherein a different process is selected for determining a blood pressure depending on an initial cuff pressure.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.