Dynamically calibrated blood pressure reference value electronic sphygmomanometer

Abstract

The invention is a type of electronic sphygmomanometer with dynamically calibrated blood pressure reference value, which is determined based on the objective condition of human blood pressure fluctuation influenced by various factors such as age, date and time of measurement, and establishes age/blood pressure reference value, date/blood pressure reference value and time/blood pressure reference. The value database, or through mathematical operations, obtains the real-time standard blood pressure reference value under the specific conditions of the subject's age, test date, and test time, and calibrates it as a benchmark for judging the abnormality state of the real-time blood pressure measurement value. This improves the ability of the sphygmomanometer in producing an accurate judgement of the subject's blood pressure, and reduces the margin of error for false positive tests or false negative tests.

Claims

1. An electronic sphygmomanometer comprising: a blood pressure data acquisition component, a microprocessor (MCU), and a display, wherein: the electronic sphygmomanometer is configured with dynamically calibrated blood pressure reference values; a real-time blood pressure reference value (BP.sub.reference) is dynamically calibrated by age, date and measurement time based on
BP.sub.reference=blood pressure reference standard value (BP.sub.stand)+blood pressure fluctuation value (BP), where BP includes age blood pressure fluctuation value (BP.sub.age), date blood pressure fluctuation value (BP.sub.date), and time blood pressure fluctuation value (BP.sub.time), and the real-time blood pressure reference value is calculated based on
BP.sub.reference=BP.sub.stand+BP.sub.age+BP.sub.date+BP.sub.time; the MCU is configured to analyze a deviation between a real-time blood pressure and the real-time standard blood pressure reference value in order to describe an abnormality status of the real-time blood pressure; b. the real-time blood pressure reference value (BP.sub.reference) is determined by the MCU through a search of a first database having blood pressure reference values in association with ages, a second database having blood pressure reference values in association with date, and a third data base having blood pressure reference values in association with measurement time based on:
BP.sub.reference=BP.sub.stand+BP=
BP.sub.reference=BP.sub.stand+BP.sub.age+BP.sub.date+BP.sub.time, where BP=BP.sub.age+BP.sub.date+BP.sub.time; the display is configured to display: the real-time blood pressure reference value, the real-time blood pressure; and an analysis of the real-time blood pressure including a warning of the abnormality status.

2. The electronic sphygmomanometer of claim 1, wherein: the first database is a data collection of the ages of a population group and corresponding blood pressure reference values (BP.sub.reference); the second database is a data collection of the date of measurement and corresponding blood pressure reference values (BP.sub.reference); the third database is a data collection of the time of measurement and corresponding blood pressure reference values (BP.sub.reference); the first, second, and third databases are stored in a read-only memory (ROM).

3. The electronic sphygmomanometer of claim 1, wherein: the ages of the population group are collected by a human-computer interaction (HCI), including a touch screen, key input and voice input; the date of measurement and the time of measurement are provided by an MCU clock unit, an independent clock unit, or a WIFI signal timing.

4. The electronic sphygmomanometer of claim 1, wherein the analysis of the real-time blood pressure includes the real-time blood pressure reference value (BP.sub.reference) displayed in a single-side arrow-shaped graphic frame with an arrow pointing to a middle position of a blood pressure warning bar.

Description

BRIEF DESCRIPTION OF DRAWINGS

(1) FIG. 1 is a schematic block diagram of a dynamically calibrated electronic sphygmomanometer with a blood pressure reference value according to the present invention.

(2) FIG. 2 is a schematic diagram of a display interface of a blood pressure reference value dynamic calibration electronic blood pressure monitor according to the present invention.

(3) FIG. 3 is a flow chart of the dynamic calibration procedure of the blood pressure reference value.

(4) FIG. 4 is a table of age/blood pressure (systolic/diastolic) reference value data.

(5) FIG. 5 is a graph of date/blood pressure (systolic/diastolic pressure) fluctuations.

(6) FIG. 6 is a graph of time/blood pressure (systolic/diastolic pressure) fluctuations.

DETAILED DESCRIPTION OF THE INVENTION

(7) The specific embodiments of the invention will be described in detail below with reference to the accompanying drawings. As shown in FIG. 1, the present invention is composed of six parts, specifically including a blood pressure (heart rate) data acquisition unitS106, a measured subject information data input unitS101, a database (age/blood pressure reference value, date/blood pressure reference value, time/blood pressure reference value) storage unitS102, an microprocessor MCUS103, a displayS104 and a power supplyS105. The solid line represents the frame part of existing electronic sphygmomanometers. The information data input unitS101 and data storage unitS102 of the measured object are shown by the dashed line frame and are contents of the invention new to existing sphygmomanometers.

(8) FIG. 2 is a schematic diagram of a display unit according to the invention. The dashed line frame portionS201, S202is a content of the proposed invention that is new to existing sphygmomanometers, which are the real-time blood pressure reference value data display and the age data display. Age data can be input through a touch screen or a key input method (conventional technology design, not shown on FIG. 2) to adjust the age data to match the age of the measured subject. Then the MCU can use the displayed data as the age data of the measured subject.

(9) The real-time blood pressure reference value data is displayed in a single-sided arrow-shaped graphic frame. The arrow points to the middle position of the blood pressure warning bar, and the image intuitively indicates the meaning of the blood pressure reference value.

(10) The clock display (circuit) is a standard configuration of an existing electronic sphygmomanometer, providing date (day, month, year) and time data, including a MCU-driven clock unit, an independent clock unit independent of the MCU, and a wireless (eg WIFI) timing clock unit. The date and measurement time data of this sphygmomanometer invention can be obtained through the above three methods. When the blood pressure monitor (sphygmomanometer) is powered on, the MCU obtains the date and time data to dynamically calibrate the blood pressure reference value with the date and measurement time data.

(11) FIG. 3 is a flowchart of the dynamic calibration procedure of the blood pressure reference value of this invention. The program flow is as follows: 1. After the power of the sphygmomanometer is turned on, the system (MCU) is initializedstep S301; 2. The default age data is the median age (36-40 years), the standard blood pressure reference value is 120/80, step S302; 3. Collect the date data and adjust the blood pressure reference value, step S303; 4. Collect time data and adjust the blood pressure reference value, step S304; 5. Does the age match the default agestep S305? If not, the age data is used to modify the blood pressure reference valuestep S306. If yes, maintain the age data as the default value, and maintain the blood pressure reference value as corrected by time datastep S307. That is, when the condition data of the measured age, measurement date, and measurement time are obtained, the system (MCU) dynamically calibrates the real-time blood pressure reference value data of the measured subject through database search and conventional mathematical operations.

(12) In addition to the real-time standard blood pressure reference data through three conditions of age, date and time dynamic calibration procedure, the real-time blood pressure measurement procedure of the electronic sphygmomanometer of the present invention is the same as the existing electronic sphygmomanometers. After the real-time blood pressure measurement data is generated, the MCU compares and calculates the real-time blood pressure data with the real-time standard blood pressure reference value data to determine the (ab)normality state of the measured subject, and drives the display to display the real-time blood pressure data and blood pressure abnormality information of the measured subject.