KR20200075625A - Smart band type apparatus and method for measuring both arm pulse simultaneously - Google Patents

Abstract

The present invention relates to a blood pressure measuring device, which may be worn on one wrist. In one embodiment of the present invention, the blood measuring device may comprise: a pulse sensor in contact with radial artery at one wrist; a photoplethysmography (PPG) sensor disposed adjacent to the pulse sensor so that the radial artery at one wrist and capillary vessel of the other finger are closed by pressing at least a portion of the other finger; and a processor calculating blood pressure by analyzing results of the PPG sensor and the pulse sensor.

Description

Simultaneous measuring device and method for smart band type double arm vein {SMART BAND TYPE APPARATUS AND METHOD FOR MEASURING BOTH ARM PULSE SIMULTANEOUSLY}

Blood pressure measuring device. More specifically, it relates to an apparatus and method for measuring blood pressure using a smart band or the like.

A pulse diagnosis is a kind of diagnostic method that aims to examine the pulse and obtain the necessary data in case of a dialectic by looking at the pulse. It is a representative diagnostic method to grasp the health condition and disease of the human body by observing changes in the pulses of the arteries that exude to the body surface. The number of pulses, rhythm, size, duration, etc. can be checked to determine the heart function or arterial properties.

Specifically, in the pulse pulse, the left and right pulses have different internal organs. For example, the left veins are associated with the heart, liver, and kidney, and the right veins are associated with the lungs, spleen, and kidneys. Therefore, a method of diagnosing left and right veins together is needed. In addition, the two indicators of blood pressure and pulse are indicators that change depending on various conditions and environments (physical activity, sleep, food and beverage, stress, external temperature, etc.). .

International Patent Publication No. WO2013/141419 (published on September 26, 2013) proposes a biometric system for evaluating vascular and cardiopulmonary function using both hands.

According to an embodiment, a blood pressure measuring device that can be worn on one wrist, comprising: a pulse sensor contacting the radial artery of the wrist; A PPG (Photoplethysmography) sensor that is at least partially pressed by the other finger to close the radial artery of the one wrist and the capillaries of the other finger, and is disposed adjacent to the pulse sensor; And a processor for analyzing the results of the PPG sensor and the pulse sensor to calculate blood pressure.

According to another embodiment, the pulse sensor includes a plurality of pulse sensor arrays, and the multiple pulse sensor arrays provide a blood pressure measuring device for measuring pulse waves when the radial artery of the one wrist is pressed.

According to another embodiment, the processor also discloses a blood pressure measuring device for calculating the blood pressure by measuring at least one of a pressing force, a pressing speed, a pressing acceleration, and a pressing direction when the pulse sensor array is two-dimensionally distributed.

According to another embodiment, a communication unit configured to transmit the blood pressure calculated by the processor to an external display device may be further included.

According to another embodiment, the processor is provided with a blood pressure measuring device that calculates blood pressure by analyzing a result when at least one of the pressing force, the pressing speed, the pressing acceleration, and the pressing direction is within a predetermined range.

According to another embodiment, a storage unit for storing a result when at least one of the pressing force, the pressing speed, the pressing acceleration, and the pressing direction is within a predetermined range may be further included.

According to an embodiment, the processor is provided with a blood pressure measuring device that analyzes the results of the PPG sensor and the pulse sensor to calculate at least one of average blood pressure, systolic blood pressure, and diastolic blood pressure.

According to one side, a blood pressure measurement method performed at least temporarily by a blood pressure measurement device that can be worn on one side of the wrist, the pulse sensor comprising: measuring a pulse wave of the radial artery of one wrist; A photoplethysmography (PPG) sensor in which at least a portion is pressed by the other finger, causing the radial artery of the one wrist and the capillaries of the other finger to close and measuring the pulse wave of the other finger; And a processor calculating blood pressure by analyzing the measurement results of the PPG sensor and the pulse sensor.

According to another aspect, the step of measuring the pulse wave by the pulse sensor discloses a blood pressure measurement method, wherein the pulse sensor measures a pulse wave when the pulse sensor including a plurality of pulse sensor arrays presses the radial artery of the wrist.

According to another aspect, when the plurality of pulse sensor arrays are two-dimensionally distributed, a blood pressure measuring method is further provided, which further comprises measuring at least one of a pressing force, a pressing speed, a pressing acceleration, and a pressing direction.

According to another side, the communication unit may further include transmitting the blood pressure calculated by the processor to an external display device.

According to another aspect, the step of calculating the blood pressure includes analyzing a result when at least one of the pressing force, the pressing speed, the pressing acceleration, and the pressing direction is within a predetermined range, and calculating the blood pressure. Is presented.

According to another aspect, a method may further include a step of storing a result when the storage unit is within a predetermined range of at least one of the pressing force, the pressing speed, the pressing acceleration, and the pressing direction.

According to one side, the calculating of the blood pressure may be a step of calculating at least one of average blood pressure, systolic blood pressure, and diastolic blood pressure by analyzing the results of the PPG sensor and the pulse sensor.

According to one embodiment, a software program stored in a computer-readable recording medium, which is executed by the computer to process data related to blood pressure measurement, and the program: processes data received from an external blood pressure measurement device to receive the data. A set of instructions for determining that the data to be generated corresponds to at least one of average blood pressure, systolic blood pressure, and diastolic blood pressure; A set of instructions for processing the data and rendering blood pressure values corresponding to the data; And a set of instructions for processing the data and rendering a graph of blood pressure values corresponding to the data.

1 is a block diagram of a blood pressure measuring device according to an embodiment.
2 is a cross-sectional view of a blood pressure measuring apparatus according to an embodiment.
3 is a cross-sectional view of a blood pressure measuring device when a user's wrist is wrapped according to an embodiment.
4 is a flowchart illustrating a blood pressure measurement method according to an embodiment.
5 shows a state of a mobile phone that can be linked to a blood pressure measuring device according to an embodiment.
6 shows a graph of PPG and radial arterial wave according to an embodiment.
7 illustrates a case of displaying information on a pressing speed, etc. according to an embodiment.
8 is a diagram illustrating a state in which only valid data is filtered according to an embodiment.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, the scope of rights is not limited or limited by these embodiments. The same reference numerals in each drawing denote the same members.

The terminology used in the description below has been selected to be general and universal in the related technical field, but may have other terms depending on technology development and/or changes, conventions, and technical preferences. Therefore, the terms used in the following description should not be understood as limiting the technical idea, and should be understood as exemplary terms for describing the embodiments.

Also, in certain cases, some terms are arbitrarily selected by the applicant, and in this case, detailed meanings will be described in the corresponding description. Therefore, the terms used in the description below should be understood based on the meaning of the term and the entire contents of the specification, not just the name of the term.

1 is a block diagram of a blood pressure measuring device according to an embodiment. The blood pressure measuring apparatus 100 according to an embodiment may include a pulse sensor 110, a PPG sensor 120, and a processor 130. According to another embodiment, it is also possible to further include a communication unit (not shown) and a storage unit (not shown).

In addition, the blood pressure measuring apparatus 100 according to an embodiment may be worn on one user's wrist, and this content will be described in detail in FIGS. 2 to 3.

The pulse sensor 110 may be disposed in contact with the radial artery of one wrist. The pulse sensor 110 may measure pulse waves sensed from the radial artery of one wrist in contact.

At least a portion of the pulse sensor 110 is pressed by the other finger so that the pulse sensor 110 can be in close contact with the radial artery of the one wrist. More specifically, when the user presses the PPG (Photoplethysmography) sensor 120 disposed adjacent to the pulse sensor with the other finger, the pulse sensor 110 disposed on the opposite side of the PPF sensor 120 is pressed together. .

The size of the pressure may be, but not limited to, the degree to which the radial artery of the one wrist and the capillaries of the other finger are closed.

The pulse sensor 110 may continuously measure the pulse wave measured from the radial artery of one wrist. The measured pulse wave may be processed together with the pulse wave measured by the PPG sensor 120 by the processor 130 to calculate blood pressure.

Also, the pulse sensor 110 may be configured with a plurality of pulse sensor arrays. For example, a plurality of pulse sensors may be arranged in two dimensions. A plurality of pulse sensor arrays arranged in two dimensions may further measure a direction, a pressing force, a pressing speed, and a pressing acceleration, in which the pulse sensor 110 presses the radial artery by the other finger.

The PPG sensor 120 is a light volume pulse wave measuring device that can measure the pulse wave of the other finger using an optical method. That is, it is possible to measure the pulse wave of one wrist and the finger on the opposite side measured by the pulse sensor.

The PPG sensor 120 may be pressed with the other finger and, for example, pressurization may be performed to the extent that the capillaries of the other finger are closed. While controlling the pressing force, the pulse wave of the finger capillaries can be measured using a volume change in an optical manner.

The processor 130 may calculate blood pressure by analyzing measurement results of the PPG sensor and the pulse sensor. As described above, since left and right pulse waves have different organs and organs related to them in Oriental medicine, it is necessary to measure pulse waves of both hands individually. Accordingly, the pulse wave measured by the pulse sensor 110 and the PPG sensor 120 may be synthesized to calculate information related to blood pressure or the like.

According to one embodiment, the processor 130 does not use all pulse waves measured by the pulse sensor and the PPG sensor, and may use only pulse wave information corresponding to a predetermined criterion. In detail, when pressure direction, pressure velocity, and pressure acceleration are measured by a plurality of pulse sensor arrays, information on blood pressure or the like is obtained by using pulse waves as effective data when the measured values are included in a predetermined criterion. Can be calculated.

For example, data when the pressurization speed or the pressurization acceleration is inappropriate may be excluded, and according to another embodiment, when all conditions are satisfied in consideration of the predetermined criteria in consideration of the pressing force, the pressing direction, the pressurization speed, and the pressurization acceleration Only data from can be used as valid data.

As a result, the processor 130 may calculate information related to blood pressure using pulse wave data on the left and right sides. By way of example and not limitation, mean blood pressure (MBP), systolic blood pressure (SBP), and diastolic blood pressure (DBP) can be calculated.

The blood pressure measuring apparatus according to an embodiment may further include a communication unit and a storage unit. The communication unit may transmit the measured pulse wave information and the information related to the calculated blood pressure to the user's mobile phone terminal using a wireless communication method. Alternatively, according to another embodiment, in the case of medical information, it may be transmitted to a device authorized by a medical doctor through a separate wired connection.

The storage unit may store pulse wave information measured by the pulse sensor 110 and the PPG sensor 120. According to one embodiment, it is also possible to store only valid data filtered by the processor. That is, only valid measurement data in which the pressing speed, pressing acceleration, pressing direction and pressing force satisfy predetermined criteria can be stored.

In addition, according to another embodiment, information related to blood pressure calculated by the processor may be further stored. For example, it is also possible to store all of the various information measured and calculated, such as average blood pressure, systolic blood pressure, diastolic blood pressure, left pulse wave over time, and right pulse wave.

2 is a cross-sectional view of a blood pressure measuring apparatus according to an embodiment. The blood pressure measuring apparatus 200 according to an embodiment may include a pulse sensor 210, a PPG sensor 220, a processor 230, and a wrist band 240.

Another blood pressure measuring device in one embodiment may be worn on one side of the wrist, and may be worn on both the left and right wrists. The blood pressure measuring device 200 is a cross-sectional view as viewed from the side, and the pulse sensor 210 shows a plurality of pulse sensor arrays arranged in two dimensions.

A plurality of PPG sensors 220 may also be disposed in some cases, and may be disposed on opposite sides of the pulse sensor 210. When the PPG sensor is pressed, the pulse sensors on the opposite sides are also disposed adjacent to each other so that they can be pressed together.

The processor 230 may be disposed under the blood pressure measurement device 200, and may further include a storage unit (not shown), a battery (not shown), and a communication unit (not shown). It is only an exemplary drawing, and the processor 230 is not necessarily disposed below, and only needs to be connected to the pulse sensor 210 and the PPG sensor 220.

The wrist band 240 is configured to be worn on a user's wrist, and according to an embodiment, the wrist band 240 may be made of a material used for a watchband, such as rubber, leather, plastic, and aluminum.

By the wrist band 240, the user can wear the blood pressure measuring device 200 on the wrist area similar to a watch as usual, and when the user wants to measure the blood pressure, the PPG sensor 220 is pressed at any time. It is possible.

3 is a view showing a state of use of a blood pressure measuring device that wraps one user's wrist according to an embodiment. The user may wear a blood pressure measuring device on one wrist 360 and press the PPG sensor using the other finger 350.

Since it can be inconvenient to press the wrist in the normal wearing state, it is usually possible to wear it by adjusting the wristband with a suitable circumference, and when measuring blood pressure, press the PPG sensor with the other finger 350 to measure the pulse wave. Can.

Specifically, when a blood pressure measuring device is worn on one wrist and the PPG sensor is pressed with the other finger 350, a pulse sensor (or a plurality of pulse sensor arrays) on the opposite side of the PPG sensor causes the radial artery 370 to be pressed. do. Pressurization presses the other finger simultaneously by action and reaction, so the radial artery 370 and the capillaries of the finger are pressed simultaneously. The intensity of the pressing force may be, for example, the degree to which the radial artery and capillaries are closed.

4 is a flowchart illustrating a blood pressure measurement method according to an embodiment. Blood pressure measurement method according to an embodiment of the PPG sensor pressure step 410, pulse sensor pulse wave measurement step 420, PPG pulse wave measurement step 421, pressure, acceleration, direction measurement step 430, the allowable range filtering step 440, a result value correction step 450 and a left and right pulse pressure calculation step 460.

The PPG sensor pressing step 410 is a step in which the PPG sensor is pressed by the user's other finger. When the PPG sensor is pressurized to a certain level, pulse wave measurement can be started.

The pulse sensor pulse wave measurement step 420 and the PPG pulse wave measurement step 421 are steps of measuring pulse waves by the pulse sensor and the PPG sensor. Each sensor is pressed by a finger, and the pulse sensor and the PPG sensor can measure pulse waves in their own ways. The PPG sensor may use an optical method, and the pulse sensor may use a pressure measurement method.

Measurement of pulse wave can be continuously measured for a certain period of time, and the start and end can be designated by using a separate device (eg, a mobile phone terminal) interlocked with a blood pressure measuring device.

The pressurization speed, acceleration, and direction measurement step 430 is a step of measuring the pressurization speed, acceleration, and direction when the pulse sensor is composed of a plurality of pulse sensor arrays. When a plurality of pulse sensor arrays are arranged in two dimensions, the direction of pressure can be measured, and acceleration and speed can be calculated using the pressure measurement.

The allowable range filtering step 440 is a step of performing filtering on whether or not a predetermined criterion is satisfied in consideration of the calculated pressing speed, pressing acceleration, pressing direction, and pressing force. For example, if the pressurization speed is faster or slower than a predetermined criterion, it can be regarded as noise or outliers and filtered.

Only pulse wave information of valid data that satisfies a predetermined criterion in the filtering step 440 may be used for blood pressure calculation or the like.

The result value correction step 450 is a step of correcting the measured pulse wave value. For example, the value removed in the filtering step 440 may be compensated by using a measurement neighbor value. The step of compensating the value is described in detail in FIG. 8.

The left and right pulse pressure calculation step 460 is a step of calculating the left and right pulse pressure using the filtered and corrected pulse wave information. For example, although it is expressed as left and right pulse pressure, information on the highest blood pressure, the lowest blood pressure, and the average blood pressure can be further calculated. It is also possible to calculate the average pulse pressure on the left and right sides.

5 shows a state of a mobile phone that can be linked to a blood pressure measuring device according to an embodiment. The blood pressure measurement device may display blood pressure related information in conjunction with a user's mobile phone terminal.

Specifically, the blood pressure measuring device may be connected to the user's mobile phone terminal using a communication unit, and may transmit various data measured and calculated to the mobile phone terminal.

The mobile phone terminal may display various information received through a display. In FIG. 5, for example, a user terminal displays a target pressure, a current pressure, a pressing acceleration, a pressing speed, and a pressing direction. In addition, the mobile phone terminal may show a change in the pulse wave of the radial artery and the change in the PPG pulse wave over time.

In addition, the user terminal can control the measurement of the blood pressure measurement device using the start and end measurement buttons, and it is also possible to transmit data to a separate terminal using an email, a messenger, or the like.

6 shows a graph of PPG and radial arterial wave according to an embodiment. The PPG amplitude change and the radial arterial wave change over time according to an embodiment are illustrated. Information related to blood pressure is calculated using the measured PPG and radial arterial wave. The graph of FIG. 6 is illustrative only and is not limited thereto.

7 illustrates a case of displaying information on a pressing speed, etc. according to an embodiment. That is, the contents of the user's mobile phone terminal displaying blood pressure-related information are specifically shown.

The target pressurization is expressed in mmHg units, and a suitable predetermined pressurization range may be indicated by a dotted range. Correspondingly, the current pressure level can be displayed together.

It is also possible to display information regarding the pressurization speed and acceleration. Appropriate pressing speeds and pressing acceleration regions in a predetermined range may be similarly indicated by dotted lines, and the current pressing speeds and accelerations may be indicated by solid circles. Since the solid circle is located inside the dotted circle, it is being measured with an appropriate pressing speed and pressing acceleration that meets the predetermined criteria. The pressing direction can also be indicated in this way. In FIG. 7, this is exemplarily expressed as such, but is not limited thereto.

8 is a diagram illustrating a state in which only valid data is filtered according to an embodiment. 8 exemplarily shows a state of the pulse wave signal according to the time measured by the blood pressure measuring device.

The signal that is removed from the pulse wave signal shown in FIG. 8 means a signal that is removed by filtering a signal that does not meet a predetermined criterion in step 440 of FIG. 4. When the signal is removed, since there is no pulse wave information measured at the corresponding time, the measurement value can be corrected by linear fitting in a dotted line. This is only an example, and it is possible to measure and calculate without excluding the corresponding value and correcting the resulting value.

The device described above may be implemented with hardware components, software components, and/or combinations of hardware components and software components. For example, the devices and components described in the embodiments include, for example, processors, controllers, arithmetic logic units (ALUs), digital signal processors (micro signal processors), microcomputers, field programmable arrays (FPAs), It may be implemented using one or more general purpose computers or special purpose computers, such as a programmable logic unit (PLU), microprocessor, or any other device capable of executing and responding to instructions. The processing device may run an operating system (OS) and one or more software applications running on the operating system. Further, the processing device may access, store, manipulate, process, and generate data in response to the execution of the software. For convenience of understanding, a processing device may be described as one being used, but a person having ordinary skill in the art, the processing device may include a plurality of processing elements and/or a plurality of types of processing elements. It can be seen that may include. For example, the processing device may include a plurality of processors or a processor and a controller. In addition, other processing configurations, such as parallel processors, are possible.

The software may include a computer program, code, instruction, or a combination of one or more of these, and configure the processing device to operate as desired, or process independently or collectively You can command the device. Software and/or data may be interpreted by a processing device, or to provide instructions or data to a processing device, of any type of machine, component, physical device, virtual equipment, computer storage medium or device. , Or may be permanently or temporarily embodied in the transmitted signal wave. The software may be distributed on networked computer systems and stored or executed in a distributed manner. Software and data may be stored in one or more computer-readable recording media.

The method according to the embodiment may be implemented in the form of program instructions that can be executed through various computer means and recorded on a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, or the like alone or in combination. The program instructions recorded on the medium may be specially designed and configured for the embodiments or may be known and usable by those skilled in computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical media such as CD-ROMs, DVDs, and magnetic media such as floptical disks. Includes hardware devices specifically configured to store and execute program instructions such as magneto-optical media, and ROM, RAM, flash memory, and the like. Examples of program instructions include high-level language code that can be executed by a computer using an interpreter, etc., as well as machine language codes produced by a compiler. The hardware device described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

Although the embodiments have been described by the limited drawings, those skilled in the art can make various modifications and variations from the above description. For example, the described techniques are performed in a different order than the described method, and/or the components of the described system, structure, device, circuit, etc. are combined or combined in a different form from the described method, or other components Alternatively, proper results can be achieved even if replaced or substituted by equivalents.

Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

100:

Claims (15)

A blood pressure measuring device that can be worn on one wrist,
A pulse sensor in contact with the radial artery of the one wrist;
A PPG (Photoplethysmography) sensor that is at least partially pressed by the other finger to close the radial artery of the one wrist and the capillaries of the other finger, and is disposed adjacent to the pulse sensor; And
Processor for calculating blood pressure by analyzing the results of the PPG sensor and the pulse sensor
Blood pressure measuring device comprising a.
According to claim 1,
The pulse sensor includes a plurality of pulse sensor arrays, and the multiple pulse sensor arrays measure blood pressure when the radial artery of the wrist is pressed.
According to claim 2,
The processor measures the blood pressure by measuring at least one of a pressing force, a pressing speed, a pressing acceleration, and a pressing direction when the pulse sensor array is two-dimensionally distributed.
According to claim 3,
Communication unit for transmitting the blood pressure calculated by the processor to an external display device
Blood pressure measuring device further comprising a.
According to claim 4,
The processor,
A blood pressure measuring device that calculates blood pressure by analyzing a result when at least one of the pressing force, pressing speed, pressing acceleration, and pressing direction is within a predetermined range.
The method of claim 5,
Storage unit for storing a result when at least one of the pressing force, pressing speed, pressing acceleration and pressing direction is within a predetermined range
Blood pressure measuring device further comprising a.
The method of claim 6,
The processor,
Blood pressure measuring device for calculating at least one of the average blood pressure, systolic blood pressure, and diastolic blood pressure by analyzing the results of the PPG sensor and the pulse sensor.
In the blood pressure measuring method is performed at least temporarily by a blood pressure measuring device that can be worn on one side of the wrist,
A pulse sensor measuring a pulse wave of a radial artery on one side of the wrist;
A photoplethysmography (PPG) sensor in which at least a portion is pressed by the other finger, causing the radial artery of the one wrist and the capillaries of the other finger to close and measuring the pulse wave of the other finger; And
The processor calculates blood pressure by analyzing the measurement results of the PPG sensor and the pulse sensor.
Blood pressure measurement method comprising a.
The method of claim 8,
The pulse sensor measures the pulse wave,
When the pulse sensor, which includes a plurality of pulse sensor arrays, presses the radial artery of the wrist, measuring the pulse wave.
The method of claim 9,
When the plurality of pulse sensor arrays are two-dimensionally distributed, measuring at least one of a pressing force, a pressing speed, a pressing acceleration, and a pressing direction.
Blood pressure measurement method further comprising a.
The method of claim 10,
The communication unit transmits the blood pressure calculated by the processor to an external display device.
Blood pressure measurement method further comprising a.
The method of claim 11,
The step of calculating the blood pressure,
The blood pressure measurement method of calculating blood pressure by analyzing a result when at least one of the pressing force, the pressing speed, the pressing acceleration, and the pressing direction is within a predetermined range.
The method of claim 12,
The storage unit stores the result when the at least one of the pressing force, pressing speed, pressing acceleration, and pressing direction is within a predetermined range.
Blood pressure measurement method further comprising a.
The method of claim 11,
The step of calculating the blood pressure,
The blood pressure measurement method is a step of calculating at least one of average blood pressure, systolic blood pressure, and diastolic blood pressure by analyzing the results of the PPG sensor and the pulse sensor.
A software program stored on a computer-readable recording medium, executed by the computer to process data associated with blood pressure measurement, the program comprising:
A set of instructions for processing data received from an external blood pressure measuring device and determining that the received data corresponds to at least one of average blood pressure, systolic blood pressure, and diastolic blood pressure;
A set of instructions for processing the data and rendering blood pressure values corresponding to the data; And
A set of instructions for processing the data and rendering a graph of blood pressure values corresponding to the data
Programs that include.

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