KR20190009079A - Wearable Blood Pressure Monitor And Method For Providing Blood Pressure Using The Same - Google Patents

Abstract

According to an embodiment of the present invention, provided is a wearable blood pressure monitor and a method for providing blood pressure using the same. The wearable blood pressure monitor according to the present invention comprises: a blood pressure measurement unit for measuring blood pressure of a measurement target part by being worn on a human body; an altitude measurement unit for sensing an altitude change of the measurement target part due to a movement of the measurement target part; and a blood pressure correction unit for correcting an actual blood pressure value measured by the blood pressure measurement unit to a value measured at the height of a heart. The altitude measurement unit includes: an altitude difference sensing unit for sensing a first altitude difference that is a vertical distance between an altitude reference point set as a reference position of the measurement target part when calculating the altitude change and an actual measured point where the measurement target part is positioned at a time when blood pressure measurement is performed by the blood pressure measurement unit; and an altitude difference detection unit for detecting an altitude difference between the altitude reference point and a heart and a second altitude difference that is a vertical distance between the actual measured point and the heart from the first altitude difference. In addition, the blood pressure correction unit corrects the actual blood pressure value by using the second altitude difference to calculate a corrected blood pressure value corresponding to the performance of the blood pressure measurement on the measurement target part at the height of the heart.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a wearable blood pressure monitor,

The present invention relates to a blood pressure monitor and a blood pressure providing method, and more particularly, to a wearable blood pressure monitor capable of providing an accurate blood pressure value in consideration of a position where an actual blood pressure (actual blood pressure value) is measured and an altitude difference The present invention relates to a method for providing a blood pressure.

Generally, the blood pressure is measured as the blood pressure on the wall of the blood vessel, and the heart repeats shrinkage and relaxation about 60 to 80 times per minute. When the heart contracts and pushes out the blood, the pressure on the blood vessel is called 'contracting blood pressure' and is called 'hypertension' because it is the highest. In addition, when the heart relaxes and receives blood, the pressure of the blood pressure is called 'relaxed blood pressure' and the lowest is called 'the lowest blood pressure'.

The normal blood pressure of a normal person is 120 mmHg in shrinking blood pressure and 80 mmHg in relaxed blood pressure. More than 1 out of 4 adults in Korea are hypertensive, and this ratio has been increasing rapidly since the age of 40, and some patients are classified as hypotensive.

The problem of hypertension is that when left without proper management of hypertension, it may cause other complications that may pose life threatening diseases such as eye disease, kidney disease, arterial disease, brain disease, heart disease, Patients who are at risk of complications or who have complications should be monitored and monitored for persistent blood pressure.

BACKGROUND ART [0002] Various kinds of blood pressure measuring devices have been developed as interest in health related diseases and geriatric diseases such as hypertension has increased. The blood pressure measurement method includes a Korotkoff sounds method, an oscillometric method, and a tonometric method.

The stethoscope method is a typical pressure measurement method. In the process of decompressing the blood flow by applying sufficient pressure to the body part passing through the arterial blood, the pressure at the moment when the pulse sound is heard for the first time is measured by systolic pressure And the pressure at the moment when the pulsation disappears is measured by diastolic pressure.

The oscillometric method and the tonometric method are applied to a digitized blood pressure measuring device. The oscillometric method is a method in which the body part through which the arterial blood passes is decompressed at a constant speed so as to block the arterial blood flow as in the stethoscopic method or a pulse wave generated during the pressure step- And measures systolic blood pressure and diastolic blood pressure.

Here, the pressure at the time when the amplitude of the pulse wave is maximum can be measured by the systolic blood pressure or the diastolic blood pressure, and the pressure when the rate of change of the pulse wave amplitude is rapidly changed is measured by the systolic blood pressure or the diastolic blood pressure You may.

In the process of reducing pressure at a constant rate after pressurization, the systolic blood pressure is measured ahead of the moment when the amplitude of the pulse wave is maximum, and the diastolic blood pressure is measured later than the moment when the amplitude of the pulse wave is maximum. On the contrary, in the process of increasing the blood pressure at a constant speed, the systolic blood pressure is measured later than the moment when the amplitude of the pulse wave is the maximum, and the diastolic blood pressure is measured ahead of the moment when the amplitude of the pulse wave is maximum.

Next, in the tonometric method, a constant pressure of a magnitude not blocking the blood flow of the artery is applied to the body part, and the blood pressure can be continuously measured using the size and shape of the pulse wave generated at this time.

A device for measuring blood pressure in various ways as described above, that is, a blood pressure monitor is the most basic medical device for measuring the blood pressure which is the basis of the health index, and is almost indispensably provided in general medical clinics. It is widely used for measurement.

Most blood pressure monitors currently in use are designed to measure in the upper arm similar to the heart height, but products capable of measuring blood pressure on the wrist or finger have also been developed for portability and ease of measurement. The above-described wrist blood pressure monitor or finger blood pressure monitor is advantageous in that it is convenient to carry and easy to measure at any time since it is smaller in size than a brachial blood pressure monitor.

On the other hand, the blood pressure actually measured may vary depending on the blood pressure measurement site. Even if the blood pressure measurement site is the same, the actual measurement blood pressure may vary depending on the height. In general, This is the preferred method for obtaining the value.

However, since the height difference between the height of the blood pressure measurement site and the height of the heart is not constant or varies with the blood pressure measurement as in the blood pressure measurement using the blood pressure meter such as the wrist blood pressure meter or the finger blood pressure monitor described above, The reliability of the blood pressure measurement can not be secured and the stability of the blood pressure measurement may be deteriorated.

Korean Patent Publication No. 10-2010-0118331, November 5, 2010

An object of the present invention is to provide a blood pressure monitor capable of providing an accurate blood pressure value in consideration of a height difference (altitude difference) between the measurement target site and a heart under a situation where a height of a heart is different from a measurement target site where blood pressure is measured at an arbitrary blood pressure measurement timing And a blood pressure providing method using the same, that is, a blood pressure correcting method.

More particularly, the present invention relates to a wearable sphygmomanometer capable of providing a blood pressure value with high accuracy by correcting a blood pressure measured at a position corresponding to a heart height when a blood pressure is measured at a height different from the heart, and a blood pressure providing method using the same The purpose is to provide.

One form of the present invention is a wearable sphygmomanometer, comprising: a blood pressure measuring part to be worn on a human body to measure a blood pressure of a part to be measured; An altitude measurement unit for sensing an altitude change of the measurement target site due to the movement of the measurement target site; And a blood pressure correcting unit for correcting the actual blood pressure value measured by the blood pressure measuring unit to a value measured at the heart height. Wherein the altitude measurement unit calculates the altitude change based on a difference between a altitude reference point set at a reference position of the measurement target site and a first reference position at a time when the blood pressure measurement is performed by the blood pressure measurement unit, An altitude difference detecting unit for detecting an altitude difference and an altitude difference detecting unit for detecting an altitude difference between the altitude reference point and the heart and a second altitude difference being a vertical distance between the actual spot and the heart from the first altitude difference; The blood pressure correcting unit corrects the actual blood pressure value using the second elevation difference so that the corrected blood pressure value corresponding to the blood pressure measurement for the measurement target site at the heart height is calculated.

Wherein the altimeter comprises: And an altitude setting unit for setting an altitude difference between the altitude reference point and the heart.

The altitude difference between the altitude reference point and the heart may be set by a value directly input from the outside of the blood pressure monitor to the altitude setting unit.

On the other hand, the altitude difference between the altitude reference point and the heart may be set by a value input to the altitude setting unit in the altitude difference sensing unit.

The sphygmomanometer may further include a reference point setting unit for setting the altitude reference point. The reference point setting unit may set the altitude reference point using the altitude difference sensing unit.

The altitude setting unit and the reference point setting unit may include at least one of an acceleration sensor, an altitude sensor, and a differential pressure sensor.

The sphygmomanometer may further include a blood pressure change rate providing unit for providing a reference change rate of the blood pressure per unit height in order to calculate the corrected blood pressure value.

The blood pressure change rate providing unit may obtain the reference change rate of the blood pressure from the difference between the blood pressure values measured in a state where the measurement target site is located at the altitude reference point and the heart height respectively and the altitude difference between the altitude reference point and the heart.

The elevation difference sensing unit may include at least one of an acceleration sensor, an elevation sensor, and a differential pressure sensor.

According to another aspect of the present invention, there is provided a blood pressure providing method for a wearable sphygmomanometer, comprising the steps of: (a) receiving a blood pressure of a measurement target site where blood pressure measurement is performed and an altitude change of the measurement target site due to movement of the measurement target site; And (b) correcting an actual blood pressure value for the measurement target site to a value measured at the heart height. In the step (a), when the altitude change is calculated, the altitude reference point set at the reference position of the measurement target site and the vertical distance between the actual measurement point at which the measurement target site is located at the time of measurement of the blood pressure for the measurement target site Detecting a first altitude difference, and detecting an altitude difference between the altitude reference point and the heart and a second altitude difference being a vertical distance between the actual spot and the heart from the first altitude difference; The step (b) corrects the actual blood pressure value using the second elevation difference so that the corrected blood pressure value corresponding to the blood pressure measurement for the measurement target site at the heart height is calculated.

The blood pressure providing method may further include setting an altitude reference point between the altitude reference point and the heart and the altitude reference point.

In the present invention, the lowest point of the heart when the measurement target site moves may be set as the altitude reference point, but the present invention is not limited thereto.

Wherein the step (a) can detect the first altitude difference continuously or in a discontinuous manner at intervals of time according to a change in time; The step (b) may calculate the corrected blood pressure value continuously or discontinuously at intervals of time (for example, at regular intervals). That is, the present invention can provide a blood pressure value that is automatically measured in real time.

According to the present invention, it is possible to improve the reliability and stability of the blood pressure value provided by the blood pressure monitor, and if the accuracy of the blood pressure value displayed on the blood pressure meter is lowered and the necessity of calibration (necessity of re-setting) Resetting can be performed.

Further, the present invention can provide a more accurate blood pressure value by reflecting a change in altitude according to the movement of a hand or a finger during the measurement of the blood pressure, and furthermore, correcting the measured blood pressure value automatically measured in real time Continuous or discontinuous corrected blood pressure values can be provided so that the patient or the medical staff can observe the change of the blood pressure change with time and can be made more detailed in health care, blood pressure management.

BRIEF DESCRIPTION OF THE DRAWINGS The features and advantages of the present invention will become better understood with reference to the following description taken in conjunction with the following detailed description of embodiments of the invention,
1 is a block diagram showing the configuration of a blood pressure monitor according to an embodiment of the present invention;
2 is a diagram illustrating an example of a setting process for a blood pressure monitor according to an embodiment of the present invention (as viewed from the side);
FIG. 3 is a diagram showing an example of blood pressure measurement (viewed from the side) by the blood pressure monitor according to the embodiment of the present invention at an arbitrary blood pressure measurement timing; FIG.
4 is a flowchart schematically illustrating a blood pressure providing method according to an embodiment of the present invention;
5 is a view illustrating another example of a setting process for a blood pressure monitor according to an embodiment of the present invention (a front view);
FIG. 6 is a diagram showing an example of blood pressure measurement (a state viewed from the front) for measuring blood pressure by a blood pressure monitor according to an embodiment of the present invention at an arbitrary time of blood pressure measurement; FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention in which the objects of the present invention can be specifically realized will be described with reference to the accompanying drawings. In describing the embodiments, the same names and the same symbols are used for the same configurations, and additional description therefor will be omitted below.

The terminology used herein is for the purpose of describing an embodiment of the present invention and is not intended to limit the present invention. For example, terms including ordinal numbers such as " first "and" second "may be used to distinguish between elements of the same name, but do not define or limit the number of elements.

And when an element is referred to as being "connected" or "connected" to another element, it may be directly or indirectly connected to the other element, But also the relationship that is indirectly connected.

In this specification, the terms "comprises" or "having ", or the like, mean that there is a feature, number, step, operation, element, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Hereinafter, one embodiment of a blood pressure monitor and a blood pressure providing method using the same according to the present invention will be described with reference to FIGS. 1 to 4. FIG.

The blood pressure monitor according to one embodiment of the present invention is a portable blood pressure monitor, and more specifically, a wearable blood pressure monitor (Wearable Measuring Device of Blood Pressure).

That is, the present invention is a portable blood pressure monitor that is worn on a human body to measure a blood pressure of a measurement target site, and corrects an actual measurement value, that is, an actual blood pressure value measured at the measurement target site, to obtain a corrected blood pressure value.

The blood pressure monitor according to the present invention includes a blood pressure measuring unit 10 for measuring the blood pressure of the above-described measurement target region, an altitude measurement unit 20 for sensing an altitude change of the measurement target site due to the movement of the measurement target site, And a blood pressure correction unit 30 for correcting the actual blood pressure value Pm measured at a predetermined time or an arbitrary time by the blood pressure measurement unit 10 to a value measured at the heart height.

In the present embodiment, the altimeter 20 includes an altimeter sensor 21 and an altimeter detector 22.

The altitude difference sensing unit 21 is configured to detect an altitude change. The elevation difference detection unit 22 detects an elevation difference (height difference) between the position M of the measurement target site and the heart C at the time when the blood pressure measurement unit 10 measures the blood pressure of the measurement target unit, .

Examples of the site to be measured include a wrist or a finger, and a blood pressure meter for measuring the blood pressure of the wrist is known as a wrist blood pressure monitor that is worn on the wrist like a wristwatch. A finger blood pressure meter for measuring the blood pressure of the finger is also known And the blood pressure measuring unit 10 is disposed at the measurement target site and measures arterial blood pressure of the corresponding part, for example, a wrist or a finger.

In the present embodiment, it is a matter of course that the measurement target site is a wrist, and the present embodiment is not limited to the portable wrist blood pressure monitor or the portable blood pressure monitor to which the present invention is applicable. For example, . ≪ / RTI >

The elevation difference sensing unit 21 calculates an altitude difference between the altitude reference point R set at the reference position of the measurement target site and the time at which the blood pressure measurement is performed by the blood pressure measurement unit 10, It senses the first godocha (H ₁₎ the vertical distance measured between the point (M) of the measurement target area locations.

In other words, the elevation difference sensing unit 21 is configured to sense the altitude change of the blood pressure sensing unit 10 worn on the measurement target region, and is configured to detect a vertical distance between the altitude reference point R and the measurement point M And detects the first altitude difference (H ₁ ). When a person (user) wearing the blood pressure monitor makes a walk, the body organs, for example, the arm where the measurement target site is located move back and forth in accordance with the user's walking pattern. During the user's walking, the blood pressure measurement unit 10 passes the altitude reference point R and the measurement point M set on the movement locus of the wrist, The controller 21 senses the vertical distance between the altitude reference point R and the actual point M during the movement of the arm, that is, the first altitude difference H ₁ .

The elevation difference detection unit 22 detects the elevation difference between the elevation reference point R and the heart C and the elevation difference H between the elevation reference point R and the heart C from the first elevation difference H ₁ , And detects a second altitude difference (H ₂ ) which is a distance.

The second elevation difference (H ₂ ) can be obtained by the following equation (1).

In Equation (1), H is a vertical distance (altitude difference) between the elevation reference point R and the heart C.

Next, the blood pressure correction unit 30 calculates the corrected blood pressure value Pc corresponding to the measurement of the blood pressure with respect to the measurement target site at the heart height using the second elevation difference (H ₂ ) The actual blood pressure value Pm is corrected.

The altitude measurement unit 20 may further include an altitude setting unit 23 for setting an altitude difference H between the altitude reference point R and the heart C. [

The altitude difference H between the altitude reference point R and the heart C may be set by a value input directly to the altitude setting unit 23 from outside the blood pressure monitor. For example, when the user walks the arm while swinging his / her arms back and forth, the arbitrary position to which the measurement target part (wrist) can pass may be referred to as an arbitrary position to which the user's measurement target part can pass, (R), and after measuring the height from the point (the position set as the altitude reference point) to the heart, the value can be inputted to the altitude setting unit of the blood pressure monitor.

FIG. 2 shows an example in which the user places the upper body and the arms are laid down in the gravitational direction (dotted line), that is, the lowest point of the heart when the measurement target site, that is, , But the position of the altitude reference point R is not limited to this.

The altitude difference H between the altitude reference point R and the heart C may be set by a value input to the altitude setting unit 23 in the altitude difference sensing unit 21 . Specifically, the blood pressure monitor is positioned at a position where the blood pressure sensing unit is worn, that is, a region to be measured (wrist) is set at a point at which the altitude reference point R is set and the same height as the heart height, The altitude setting unit 23 can receive the altitude change between the points, that is, the altitude difference.

The altitude difference H between the altitude reference point R and the heart C can be set in the setting mode of the blood pressure monitor, particularly in the altitude setting mode. For example, the altitude setting mode is selected in the setting mode of the blood pressure monitor, and the blood pressure meter, that is, the region where the blood pressure measuring unit 10 is worn is positioned at the same point as the heart height, An altitude difference between the two points detected by the altitude difference sensing unit 21 is input to the altitude setting unit 23 when the setting key or the button is pressed for detection, Is set to an altitude difference (H) between the reference point (R) and the heart (C).

In order to set the altitude reference point R, the reference point setting unit 50 may be provided in the blood pressure monitor according to the present embodiment. The reference point setting unit 50 may set the altitude reference point R using the altitude difference sensing unit 21.

The setting of the elevation reference point R may be performed in the reference point setting mode. For example, after selecting the reference point setting mode in the setting mode of the blood pressure monitor, a portion worn by the blood pressure measuring unit 10 is set at a position to be set as the altitude reference point R, Button), the position can be set to the altitude reference point (R).

The setting unit of one of the altitude setting unit 23 and the reference point setting unit 50 may include at least one of an acceleration sensor, an altitude sensor, an angle sensor, and a differential pressure sensor. In this case, the altitude setting unit 23 and the reference point setting unit 50 can perform their own setting functions regardless of the altitude difference sensing unit 21. [

The blood pressure monitor according to the present embodiment may further include a blood pressure change rate providing unit 50 for providing a rate of change of blood pressure per unit height, that is, a reference change rate A, in order to calculate the corrected blood pressure value Pc.

The blood pressure change rate providing unit 60 may calculate the blood pressure change rate from the difference between the blood pressure values measured in a state where the measurement target site is located at the altitude reference point R and the heart height respectively and the altitude difference H between the altitude reference point and the heart, The reference change rate A of the blood pressure can be obtained.

For example, the reference change rate A can be obtained by the following equation (2).

A is the average rate of change of the blood pressure with respect to the height change of the blood pressure measurement site when the blood pressure monitor is set.

The Ph is a measured value measured by the blood pressure measuring unit 10 while the measurement target site is set at the heart height in the setting process of the sphygmomanometer and Pr is a measured value measured by the altitude reference point R in the setting process of the sphygmomanometer, As an actual measured value measured by the blood pressure measuring unit 10 with the measurement target site in the measurement target region, the Pr in the present embodiment is positioned at a position lower than the heart (for example, The lowest point in the heart).

The setting of the sphygmomanometer may be performed through a process of measuring a user's Ph and Pr in a sphygmomanometer setting mode of an initial use stage after purchasing a product (sphygmomanometer). Of course, when the accuracy of the sphygmomanometer is lowered, resetting of the sphygmomanometer is possible as if the scale is zeroed.

The elevation difference sensing unit 21 may include at least one of an acceleration sensor, an elevation sensor, an angle sensor, and a differential pressure sensor.

For example, when the reference point setting mode is performed in a state where the blood pressure measuring unit 10 mounted on the measurement target site (wrist), that is, the blood pressure monitor according to the present embodiment is set at the position to be set at the altitude reference point R, Position information such as altitude / orientation / direction / angle of the blood pressure monitor located at the altitude reference point R is input to the reference point setting unit 50, and the position is set as the altitude reference point. Therefore, when the information sensed by the sensor constituting the altimeter difference sensing unit 21 matches the information set as the altitude reference point R or falls within a predetermined error range when the sphygmomanometer worn on the wrist moves, (First elevation difference) with the point M at which the blood pressure is measured by the blood pressure measuring unit 10 at an arbitrary timing or at a predetermined timing is calculated as the elevation reference point R .

The blood pressure correcting unit 30 obtains the corrected blood pressure value Pc by correcting the actual blood pressure value Pm using the above-described data, and the corrected blood pressure value is provided to the user by the display device or various output devices . In other words, the blood pressure monitor may further include a blood pressure display unit 40 for outputting the corrected blood pressure value Pc.

The corrected blood pressure value Pc can be obtained by the following equation (3), but the calculation method of the corrected blood pressure value is not limited thereto.

In Equation (3), g is the gravitational acceleration, and rho is the density of the blood.

Hereinafter, an embodiment of a method of providing a blood pressure according to the present invention, that is, a method of providing a corrected blood pressure value, will be described.

A method of providing a blood pressure according to an embodiment of the present invention is a method for providing a blood pressure value measured at a predetermined blood pressure measurement site, i.e., a measurement target site such as a wrist or a finger, And the blood pressure is converted to correspond to the actually measured value, thereby providing a corrected blood pressure.

The blood pressure providing method includes the steps of receiving a blood pressure (blood pressure measured by the blood pressure measuring unit 10), that is, an actual blood pressure value Pm measured at the measurement target site in a state where the blood pressure monitor is worn on the above- The corrected blood pressure value Pc is calculated / provided by correcting the blood pressure value actually measured at the measurement target portion to a value measured at the heart height.

More specifically, the blood pressure providing method according to the present embodiment includes: (a) receiving an actual blood pressure (Pm) of a measurement target site where blood pressure measurement is performed and an altitude change of the measurement target site due to the movement of the measurement target site (S1), and correcting the actual blood pressure value (Pm) with respect to the measurement target site to a value measured at the heart height (S2).

The method of claim 1, wherein the calculating of the altitude change comprises: calculating an elevation reference point (R) set at a reference position of the measurement target site and a time at which the measurement target site is located at a time of performing blood pressure measurement actual point (M) the vertical distance of the measured point from the first godocha; and the altitude reference point (R) and godocha (H) of the first godocha (H ₁₎ between the heart for sensing the (H ₁₎ between the (M And a second altitude difference (H ₂ ) which is a vertical distance between the heart and the heart.

The second elevation difference (H ₂ ) is used to calculate the corrected blood pressure value (Pc) corresponding to the measurement of the blood pressure of the measurement target site at the heart height, in step (b) Corrects the actual blood pressure value Pm, and consequently acquires and outputs the corrected blood pressure value.

In order to provide the above-described corrected blood pressure value Pc, the blood pressure providing method according to the present embodiment includes the steps of setting an altitude difference H between the altitude reference point R and the heart, and the altitude reference point R B1).

The altitude difference H between the altitude reference point R and the heart C may be set by a value input directly to the altitude setting unit 23 from outside the blood pressure monitor.

Alternatively, the altitude difference H between the elevation reference point R and the heart C may be set by a value input to the altitude setting unit 23 in the altitude difference sensing unit 21. [

The above-described contents of the blood pressure monitor can be equally applied to the above-described examples of setting the elevation reference point R and the elevation difference H between the heart and the elevation reference point R. [

In the present embodiment, the step (a) of detecting the altitude change and measuring the blood pressure of the measurement target site at a predetermined time or at any time may include: The first elevation difference H ₁ can be detected continuously or discontinuously at intervals of time. That is, the blood pressure measuring unit 10 may measure the blood pressure continuously or intermittently.

Therefore, in step (b) (S2), the corrected blood pressure value Pc can be calculated continuously or discontinuously at intervals of time. Therefore, the present embodiment can provide the corrected blood pressure value Pc based on the actual blood pressure value Pm that is automatically measured in real time.

More specifically, the corrected blood pressure value Pc can be obtained by Equations (1) to (3) and displayed on a blood pressure display unit such as an LCD screen (S3).

In order to calculate the corrected blood pressure value Pc, the rate of change of the blood pressure per unit height, that is, the reference change rate A may be set or set up.

The blood pressure change rate providing unit 60 is configured to calculate a blood pressure change rate of the subject based on a difference between blood pressure values measured in a state where the measurement target site is located at the altitude reference point R and a heart height, , The reference change rate A of the blood pressure can be obtained.

For the method of setting the reference change rate A, the method described in the embodiment of the blood pressure monitor according to the present invention, for example, the formula (2) can be applied. In other words, the reference change rate A can be obtained by the following equation (2).

The example of providing the corrected blood pressure value Pc, that is, the blood pressure providing method according to the present invention may be implemented in other manners as illustrated in the following equations (4) and (5).

In Equation (4), Pm is an actual blood pressure value obtained by measuring the blood pressure of the measurement target site at an arbitrary blood pressure measurement timing, H ₂ is a height difference (altitude difference: H ₁ ), and A is a rate of change of the blood pressure with respect to a change in height of the measurement target site, that is, the above-described standard change rate.

In Equation (5), Ph is an actual blood pressure value obtained by measuring the blood pressure at the blood pressure measurement site while the measurement target site is placed at the heart height in the blood pressure monitor setting process, Pr is a height Is an actual blood pressure value obtained by measuring the blood pressure of the measurement target portion with the car H, and H ₂ (second elevation difference) = HH ₁ .

As described above, Ph is an actual blood pressure value measured by the blood pressure measuring unit 10 while the measurement target site is set at the heart height in the setting mode of the sphygmomanometer, Pr is the actual blood pressure value measured in the setting mode of the sphygmomanometer, The actual blood pressure value measured by the blood pressure measuring unit 10 at the blood pressure value of the measurement target site measured at the position where the height difference H is placed, that is, the altitude reference point R.

Referring to FIGS. 5 and 6, the user wears a sphygmomanometer on the wrist, as in the present embodiment, and measures Ph and Pr described above.

In other words, the user wears a sphygmomanometer on his / her wrist, lifts his / her arm and puts the sphygmomanometer at the heart height, performs blood pressure measurement (Ph measurement), moves the arm with the sphygmomanometer on the same site, Is a value obtained by performing a measurement (Pr measurement), that is, a value measured by the blood pressure measurement unit 10. [

The setting of the blood pressure monitor described above is performed by measuring the Ph and Pr by only moving the arm while maintaining the same posture (for example, standing or sitting position). At this time, the difference between the measured height of Pr and the height H of the heart can be set by the altitude measurement unit 20 or the altitude setting unit 23 described above. H denotes an altitude difference, i.e., a vertical distance between a virtual horizontal plane passing through the measurement position of Pr, that is, the altitude reference point R, and a virtual horizontal plane passing through the heart.

When Ph, Pr, and H are obtained through the above-described process, the A value is calculated / obtained by using the above-described expression (2).

When the setting of the blood pressure monitor is completed as described above, the user performs the blood pressure measurement in a state in which the blood pressure monitor is worn on the measurement target site, that is, the wrist, every time the blood pressure measurement is required.

Pm is a blood pressure value obtained by measuring the blood pressure of the measurement target site at a predetermined timing (predetermined timing) or at an arbitrary timing.

For example, as shown in FIG. 6, the user wears a blood pressure monitor on his / her wrist, places the measurement target site (wrist) at a lower position than the heart, maintains the position, The blood pressure may be measured by the blood pressure measuring unit continuously or discontinuously during the movement of the arm.

In the above-described Pm measurement process, the first elevation difference (H ₁ ) obtained by the elevation measurement unit 20 means a vertical distance between a virtual horizontal plane passing the Pm measurement position and a virtual horizontal plane passing through the heart.

When the measurement of Pm is performed as described above, the corrected blood pressure value Pc described above is calculated by the above-described Equations 1 and 2, and the corrected blood pressure value is supplied to the blood pressure display unit (display device) Output / display.

The blood pressure display unit 40 is configured to output the corrected blood pressure value calculated by the blood pressure correction unit 30 to the outside so that the user and / or the medical staff can know it.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or scope of the invention as defined in the appended claims. .

Therefore, the above-described embodiments are to be considered as illustrative rather than restrictive, and thus the present invention is not limited to the above description, but may be modified within the scope of the appended claims and equivalents thereof.

10: blood pressure measuring part 20: altitude measuring part
21: altitude difference detecting unit 22: altitude difference detecting unit
23: altitude setting unit 30: blood pressure correction unit
40: blood pressure display part 50: reference point setting part
60: blood pressure change rate provider

Claims (14)

As a wearable sphygmomanometer:
A blood pressure measuring unit which is worn on a human body and measures a blood pressure of a measurement target site;
An altitude measurement unit for sensing an altitude change of the measurement target site due to the movement of the measurement target site; And
And a blood pressure correcting part for correcting the actual blood pressure value measured by the blood pressure measuring part to a value measured at the heart height,
The elevation measuring unit includes:
An altitude difference detecting unit that detects a first altitude difference, which is a vertical distance between an altitude reference point set at a reference position of the measurement target site and a measured position at which the measurement target site is located at the time of measurement of blood pressure by the blood pressure measurement unit, Sensing unit, and
And an altitude difference detection unit for detecting an altitude difference between the elevation reference point and the heart and a second altitude difference which is a vertical distance between the actual site and the heart from the first altitude difference;
Wherein the blood pressure correction unit comprises:
And the actual blood pressure value is corrected using the second elevation difference so that the corrected blood pressure value corresponding to the blood pressure measurement for the measurement target site at the heart height is calculated. The method according to claim 1,
Wherein the altimeter comprises: And an altitude setting unit for setting an altitude difference between the altitude reference point and the heart. 3. The method of claim 2,
Wherein the altitude difference between the altitude reference point and the heart is set by a value directly input from the outside of the blood pressure monitor to the altitude setting unit. 3. The method of claim 2,
Wherein the altitude difference between the altitude reference point and the heart is set by a value input to the altitude setting unit in the altitude difference sensing unit. The method according to claim 1,
And a reference point setting unit for setting the altitude reference point. 6. The method of claim 5,
Wherein the reference point setting unit sets the altitude reference point using the altitude difference sensing unit. 6. The method according to claim 2 or 5,
Wherein the setting unit of one of the altitude setting unit and the reference point setting unit includes at least one of an acceleration sensor, an altitude sensor, an angle sensor, and a differential pressure sensor. The method according to claim 1,
Further comprising a blood pressure change rate providing unit for providing a reference change rate of blood pressure per unit height in order to calculate the corrected blood pressure value. 9. The method of claim 8,
The blood-pressure-change-
And obtains a reference change rate of the blood pressure from a difference between blood pressure values measured in a state where the measurement target site is located at the altitude reference point and a heart height, respectively, and an altitude difference between the altitude reference point and the heart. The method according to claim 1,
Wherein the height difference sensing unit includes at least one of an acceleration sensor, an altitude sensor, an angle sensor, and a differential pressure sensor. A method for providing a blood pressure of a wearable sphygmomanometer comprising:
(A) receiving blood pressure of a region to be measured in which blood pressure is measured and an altitude change of the region to be measured due to movement of the region to be measured; And
(B) correcting an actual blood pressure value for the measurement target site to a value measured at the heart height,
The step (a)
Detecting a first elevation difference, which is a vertical distance between an altitude reference point set at a reference position of the measurement target site and a measured position at which the measurement target site is located at the time of measuring the blood pressure with respect to the measurement target site, Wow,
Detecting an altitude difference between the altitude reference point and the heart and a second altitude difference which is a vertical distance between the actual spot and the heart from the first altitude difference;
The step (b)
Wherein the actual blood pressure value is corrected using the second elevation difference so that the corrected blood pressure value corresponding to the blood pressure measurement with respect to the measurement target site at the heart height is calculated. 12. The method of claim 11,
Further comprising setting an altitude difference between the altitude reference point and the heart and the altitude reference point prior to the step (a). 13. The method according to claim 11 or 12,
Wherein the lowest point of the heart is set as the altitude reference point when the measurement target site moves. 12. The method of claim 11,
Wherein the step (a) comprises: sensing the first altitude difference discontinuously continuously or at a time interval according to a time change; Wherein the step (b) calculates the corrected blood pressure value continuously or discontinuously at intervals of time.

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