KR102649811B1 - Compression hemostasis band device capable of detecting deviation of hemostasis area - Google Patents

Abstract

One embodiment of the present invention is to prevent the pad, etc. from deviating from the correct pressure point and preventing hemostasis from occurring during the process of compressing/hemostasis the hemostasis area of the recipient based on a compression band and pad after the radial artery puncture procedure. It relates to a compression hemostasis band device that monitors the compression state and is capable of detecting deviation from the hemostasis site.

Description

Compression hemostasis band device capable of detecting deviation of hemostasis area {COMPRESSION HEMOSTASIS BAND DEVICE CAPABLE OF DETECTING DEVIATION OF HEMOSTASIS AREA}

In the examples below, in the process of compressing/hemostasis the patient's hemostasis area based on a compression band and pad after the radial artery puncture procedure, the pad, etc. is placed in a compression state to prevent hemostasis from being separated from the correct pressure point and not achieving hemostasis. It relates to a pressure hemostasis band device that monitors and is capable of detecting deviation from the hemostatic site.

Arterial puncture refers to drawing arterial blood through a syringe from the radial artery, brachial artery, femoral artery, etc. for arterial blood gas analysis.

After collecting arterial blood, the punctured artery is compressed for about 5 minutes to stop the bleeding. At this time, compression bands, pads, gauze, etc. are used to ensure appropriate pressure and hemostasis.

If the recipient waits until hemostasis is completed while wearing a compression band, hemostasis will be achieved without any problems. However, if the recipient moves his or her wrist, hemostasis will not occur normally and bleeding may occur as the pressure area becomes distorted. Side effects such as hematoma may occur.

Therefore, there is a need for a hemostatic band device that can keep the compressed area compressed for an appropriate amount of time after a radial artery puncture procedure.

(Utility model document 1) KR 20-0448284 Y KR 10-0892736 B KR 10-2359636 B

The problem to be solved by an embodiment of the present invention is to overcome the limitations of the conventional radial artery compression/hemostasis band as described above, by detecting whether the patient's pressure area is being normally compressed and applying pressure by the patient or medical staff. The aim is to provide a pressure hemostasis band device capable of detecting deviation from the hemostasis area, generating a predetermined notification when pressure is not applied normally, so that the band can be readjusted.

According to one embodiment, a band portion worn on the wrist of the person receiving the treatment; A compression portion disposed inside the band portion to press the hemostasis area; a sensor unit provided on at least one side of the compression unit and the band unit to measure predetermined data; and a control unit connected to the sensor unit to monitor the pressure state of the hemostasis area based on data detected by the sensor unit, wherein the control unit: generates a predetermined notification based on the pressure state of the hemostasis area. , provides a compression hemostasis band device capable of detecting deviation of the hemostasis area.

In addition, the sensor unit includes: a first sound wave sensor provided on the band unit; And a second sound wave sensor provided in the compression unit, wherein the control unit: Based on the first sound wave sensor and the second sound wave sensor, 1-1 sound wave data and the first sound wave data for a predetermined 1-1 time period. 2-1 1-1 preparation step for recording sound wave data; A 1-2 preparation step of determining whether or not it is worn normally based on the 1-1 sound wave data and the 2-1 sound wave data; If abnormal wearing is determined in the 1-2 preparation step: A band re-wearing notification is generated, and after waiting for a predetermined 1-2 time, the 1-1 preparation step and the 1-2 preparation step are performed. Re-performing preparatory steps 1-3; and when it is determined to be worn normally in the first-second preparation step: monitoring the pressure state of the hemostasis area based on sound wave data; The step of monitoring the compression state of the hemostasis site includes: a 1-1 monitoring step of calculating a 1-1 ratio that is a value obtained by dividing the average amplitude of the 2-1 sound wave data by the average amplitude of the 1-1 sound wave data; A 1-2 monitoring step of recording 1-2 sound wave data and 2-2 sound wave data for a predetermined 1-3 time period based on the first sound wave sensor and the second sound wave sensor; A 1-3 monitoring step of calculating a 1-2 ratio that is a value obtained by dividing the average amplitude of the 2-2 sound wave data by the average amplitude of the 1-2 sound wave data; A 1-4 monitoring step of calculating a 1-3 ratio by dividing the average period of the 2-2 sound wave data by the average period of the 1-2 sound wave data; If the 1-2 ratio deviates from the 1-1 ratio by more than a predetermined 1-4 ratio: a 1-5 monitoring step of determining compression failure; and when the 1-3 ratio is greater than or equal to a predetermined 1-5 ratio: a 1-6 monitoring step of determining that the compression is defective.

And, the sensor unit includes: a camera provided to face the inner direction of the band unit to photograph the wrist of the treatment recipient; and the control unit: based on the camera, a first camera is installed for a predetermined 2-1 time period. 2-1 preparation step for recording video; A 2-2 preparation step of recognizing the first wrist object of the treatment recipient from the first image; A 2-3 preparation step of extracting a 1-1 boundary line and a 1-2 boundary line, which are the boundary lines of the first wrist object in the first image, based on the first wrist object; A 2-4 preparation step of calculating a first wrist thickness, which is the width of the first wrist object in the first image, based on the first wrist object; A 2-5 preparation step of determining whether the wear is normal based on the height of the 1-1 border line and the height of the 1-2 border line; If it is determined that the wearing is abnormal in the 2-5 preparation step: A band re-wearing notification is generated, and after waiting for a predetermined 2-1 time, the 2-1 to 2-5 preparation steps are performed. Re-performing preparatory steps 2-6; and when it is determined to be worn normally in the 2-5 preparation step: monitoring the pressure state of the hemostasis area based on the second image captured by the camera; The step of monitoring the pressure state of the hemostasis area based on the second image includes: a 2-1 monitoring step of recognizing the second wrist object of the recipient from the second image; A 2-2 monitoring step of extracting a 2-1 boundary line and a 2-2 boundary line, which are the boundary lines of the second wrist object in the second image, based on the second wrist object; A 2-3 monitoring step of calculating a second wrist thickness, which is the width of the second wrist object in the second image, based on the second wrist object; A 2-4 monitoring step of calculating a first height difference, which is the difference between the height of the 2-1 boundary line and the height of the 1-1 boundary line; A 2-5 monitoring step of calculating a second height difference, which is the difference between the height of the 2-2 boundary line and the height of the 1-2 boundary line; A 2-6 monitoring step of calculating a 2-1 ratio that is a value obtained by dividing the first height difference by the first wrist thickness; A 2-7 monitoring step of calculating a 2-2 ratio obtained by dividing the second height difference by the first wrist thickness; A 2-8 monitoring step of calculating a 2-3 ratio, which is a value obtained by dividing the first wrist thickness by the second wrist thickness, and calculating a 2-4 ratio, which is a square of the 2-3 ratio; A 2-9 monitoring step of calculating a 2-5 ratio by multiplying the 2-1 ratio by the 2-4 ratio; A 2-10 monitoring step of calculating a 2-6 ratio by multiplying the 2-2 ratio by the 2-4 ratio; And when the absolute value of the 2-5th ratio or the absolute value of the 2-6th ratio is greater than or equal to the predetermined 2-7th ratio: a 2-11th monitoring step of determining that the compression is defective.

In addition, the 2-2 preparation step and the 2-1 monitoring step include: extracting a first image, which is the last frame, from the first image or the second image; generating a second image by converting the color code of pixels whose color code is outside a predetermined range among each pixel of the first image to #000000; extracting a first boundary line, which is a boundary line of an area with a color code of #000000, from the second image; extracting a second borderline from among the first borderlines, excluding the border area of the second image; extracting a plurality of first point pairs consisting of two points spaced apart from each other by a predetermined distance from among the pixels of the second boundary line; For each of the first point pairs, drawing a first line segment that connects two points included in each first point pair; For each of the first line segments, calculating a first slope, which is the slope of each first line segment; calculating a second slope that is an average of the first slopes; extracting third slopes within a predetermined error range from the second slope among the first slopes; extracting second point pairs that are first point pairs corresponding to the third slopes; drawing a curve connecting the second pair of points; and designating an area located between the pair of curves as the first wrist object or the second wrist object.

Additionally, the step of extracting the third slopes includes: calculating fourth slopes by performing a difference calculation on the second slope for each of the first slopes; calculating a first root mean square (RMS) from the fourth slope; extracting fifth slopes whose absolute value is less than or equal to the first root mean square of the fourth slopes; calculating a second root mean square from the fifth slope; Among the fifth slopes, extracting sixth slopes whose absolute value is less than or equal to the second root mean square; And designating the sixth slopes as the third slopes; comprising: drawing a curve connecting the second pair of points: for each pair of second points, included in each pair of second points A first curve drawing step of calculating first coordinates, which are the coordinates of each of the two points; a second curve drawing step of adding the first coordinates to a first array; A third curve drawing step of extracting four second coordinates based on the first coordinates, which are first coordinates whose distance to the border area of the second image is within 4 orders of magnitude closer; a fourth curve drawing step of calculating six first distances, which are the distances between the four second coordinates, and extracting a second distance, which is a median value among the first distances; A fifth curve drawing step of extracting a third coordinate that is one of the second coordinates; A sixth curve drawing step of adding the third coordinate to a second array; a seventh curve drawing step of deleting the third coordinate from the first array; With respect to the third coordinate, 'the third distance, which is the distance between each of the 'first coordinates included in the first array' and the third coordinate, is closest, and the third distance is 80% of the second distance. An eighth curve drawing step of extracting fourth coordinates that are less than or equal to %; A ninth curve drawing step of adding the fourth coordinate to a second array; A tenth curve drawing step of deleting the fourth coordinate from the first array; An 11th curve that specifies the 4th coordinate as a new 3rd coordinate and repeats the '8th curve construction step to the 10th curve construction step' until the new 4th coordinate is not extracted in the 8th curve construction step. construction stage; A twelfth curve drawing step of drawing a first curve connecting fourth coordinates included in the second array; A thirteenth curve drawing step of extracting a fifth coordinate included in the first array from among the second coordinates; A fourteenth curve drawing step of adding the fifth coordinate to a third array; a fifteenth curve drawing step of deleting the fifth coordinate from the first array; With respect to the fifth coordinate, 'the fourth distance, which is the distance between each of the 'first coordinates included in the first array' and the fifth coordinate, is closest, and the fourth distance is 80 degrees of the second distance. A 16th curve drawing step of extracting a 6th coordinate that is less than or equal to %; A seventeenth curve drawing step of adding the sixth coordinate to a third array; An 18th curve drawing step of deleting the sixth coordinate from the first array; A 19th curve that specifies the 6th coordinate as a new 5th coordinate and repeats the '16th curve construction step to the 18th curve construction step' until the new 6th coordinate is not extracted in the 16th curve construction step. construction stage; and a twentieth curve drawing step of drawing a second curve connecting the sixth coordinates included in the third array.

According to one embodiment, it is possible to detect whether the patient's pressure area is being normally compressed based on a predetermined sensor.

In addition, by generating a predetermined notification when pressure is not applied normally, it is possible to alert the patient or medical staff to take action.

Also, by detecting the pulse, the pressure status can be monitored based on the pulse.

In addition, the compression state can be monitored by photographing the wrist area with a camera and calculating the degree to which the wrist area deviates from the center of the compression band.

In addition, by reducing the video/image data processing load of the control unit, it is possible to configure a device that operates based on a low-cost/ultra-small/low-power microcomputer/CPU.

Figure 1 is a perspective view showing a pressure hemostasis band device capable of detecting deviation from a hemostatic area according to an embodiment of the present invention.
Figure 2 is a flowchart showing a control method of a pressure hemostasis band device capable of detecting departure from the hemostasis area according to an embodiment of the present invention.
Figure 3 is a flowchart showing the steps of monitoring the pressure state of the hemostasis area based on sound wave data in the control method of a pressure hemostasis band device capable of detecting departure of the hemostasis area according to an embodiment of the present invention.
Figure 5 is a diagram of sound wave data shown to explain the step of monitoring the pressure state of the hemostasis area based on sound wave data in the control method of a pressure hemostasis band device capable of detecting departure of the hemostasis area according to an embodiment of the present invention. .
Figure 5 shows a second image used in the step of monitoring the pressure state of the hemostasis area based on the second image of the control method of a pressure hemostasis band device capable of detecting departure of the hemostasis area according to an embodiment of the present invention. It is a drawing.

Hereinafter, embodiments will be described in detail with reference to the attached drawings. However, various changes can be made to the embodiments, so the scope of the patent application is not limited or limited by these embodiments. It should be understood that all changes, equivalents, or substitutes for the embodiments are included in the scope of rights.

Specific structural or functional descriptions of the embodiments are disclosed for illustrative purposes only and may be modified and implemented in various forms. Accordingly, the embodiments are not limited to the specific disclosed form, and the scope of the present specification includes changes, equivalents, or substitutes included in the technical spirit.

Terms such as first or second may be used to describe various components, but these terms should be interpreted only for the purpose of distinguishing one component from another component. For example, a first component may be named a second component, and similarly, the second component may also be named a first component.

When a component is referred to as being “connected” to another component, it should be understood that it may be directly connected or connected to the other component, but that other components may exist in between.

The terms used in the examples are for descriptive purposes only and should not be construed as limiting. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the embodiments belong. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless explicitly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

In addition, when describing with reference to the accompanying drawings, identical components will be assigned the same reference numerals regardless of the reference numerals, and overlapping descriptions thereof will be omitted. In describing the embodiments, if it is determined that detailed descriptions of related known technologies may unnecessarily obscure the gist of the embodiments, the detailed descriptions are omitted.

According to one embodiment, a band portion (1) worn on the wrist of the person receiving the treatment; A compression portion (2) disposed inside the band portion (1) to press the hemostasis area; a sensor unit provided on at least one side of the compression unit (2) and the band unit (1) to measure predetermined data; and a control unit connected to the sensor unit to monitor the pressure state of the hemostasis area based on data detected by the sensor unit, wherein the control unit: generates a predetermined notification based on the pressure state of the hemostasis area. , provides a compression hemostasis band device capable of detecting deviation of the hemostasis area.

The band portion (1) may be composed of a band made of cotton or polymer material with a certain degree of elasticity.

Velcro (3) is attached to one side of the band portion (1), so that the size/range of wearing can be adjusted to suit the size of the wrist of the recipient.

The compression unit (2) is arranged/fixed/connected to protrude from the inside of one side of the band unit (1), and can press the hemostasis area based on the elastic force/tension of the band unit (1).

According to the structure of the pressure part 2 and the band part 1, when the person receiving the treatment wears the band part 1, one side of the band part 1 is spread apart from the wrist by the pressure part 2.

The sensor unit may use at least one of various sensors according to embodiments described later.

An embodiment that uses a combination of sound wave-based pulse detection according to one embodiment and camera 4-based wrist departure detection according to another embodiment is also possible.

The control unit may be a wearable device, and may be connected to one side of the band unit 1 to generate initial settings and sound notifications or send a notification message to a medical staff terminal.

In addition, the sensor unit includes: a first sound wave sensor provided on the band unit (1); And a second sound wave sensor provided in the compression unit (2), wherein the control unit: Based on the first sound wave sensor and the second sound wave sensor, generates a 1-1 sound wave sensor for a predetermined 1-1 time period. A 1-1 preparation step (S100) of recording data and 2-1 sound wave data; A 1-2 preparation step (S200) of determining whether or not it is worn normally based on the 1-1 sound wave data and the 2-1 sound wave data; If it is determined that the band is worn abnormally in the 1-2 preparation step (S200): A band re-wearing notification is generated, and after waiting for a predetermined 1-2 time, the 1-1 preparation step (S100) and the 1st The 1-3 preparation step (S300) of re-performing the 1-2 preparation step (S200); And if it is determined to be worn normally in the 1-2 preparation step: monitoring the pressure state of the hemostasis area based on sound wave data (S400); and the sound wave data The step (S400) of monitoring the compression state of the hemostasis area based on: 1- the average amplitude (A) of the 2-1 sound wave data divided by the average amplitude (A) of the 1-1 sound wave data 1-1st monitoring step (S401) of calculating the ratio; A 1-2 monitoring step (S402) of recording 1-2 sound wave data and 2-2 sound wave data for a predetermined 1-3 time period based on the first sound wave sensor and the second sound wave sensor; A 1-3 monitoring step (S403) of calculating a 1-2 ratio, which is a value obtained by dividing the average amplitude (A) of the 2-2 sound wave data by the average amplitude (A) of the 1-2 sound wave data; A 1-4 monitoring step (S404) of calculating a 1-3 ratio by dividing the average period (P) of the 2-2 sound wave data by the average period (P) of the 1-2 sound wave data; If the 1-2 ratio deviates from the 1-1 ratio by more than a predetermined 1-4 ratio: a 1-5 monitoring step (S405) of determining that the compression is defective; and when the 1-3 ratio is greater than or equal to a predetermined 1-5 ratio: a 1-6 monitoring step (S406) of determining that the compression is defective.

The first sound wave sensor is provided on the band portion 1, directly contacts the wrist of the patient and detects the pulse (sound wave) of the patient.

The second sound wave sensor is provided in the compression unit 2, is spaced apart from the wrist of the recipient, indirectly contacts the wrist of the recipient through the compression portion 2, and detects the pulse (sound wave) of the recipient.

Therefore, in one embodiment of the present invention, the compression state can be monitored based on the difference between the pulse measured by direct contact and the pulse measured by indirect contact through the compression unit 2.

Based on the first sound wave sensor and the second sound wave sensor, 1-1 sound wave data (data of the first sound wave sensor) and 2-1 sound wave data (data of the second sound wave sensor) for a predetermined 1-1 time ) In the 1-1 preparation step (S100) of recording, immediately after the person receiving the treatment wears the device for hemostasis, the 1-1 sound wave data and the second sound wave data are received from each sound wave sensor in order to confirm the normal wearing condition for the first time. -1 Measure sound wave data.

Here, the 1-1 time may be approximately 10 to 30 seconds.

In the 1-2 preparation step (S200) of determining whether the device is worn normally based on the 1-1 sound wave data and the 2-1 sound wave data, it is determined whether the current state in which the device is worn is normal.

If it is determined that the band is worn abnormally in the 1-2 preparation step (S200): A band re-wearing notification is generated, and after waiting for a predetermined 1-2 time, the 1-1 preparation step (S100) and the 1st In the 1-3 preparation step (S300) of re-performing the 1-2 preparation step (S200), since the hemostasis area is not normally pressed, the device generates a predetermined notification (notification to re-wear the band), and After waiting 1-2 hours (5 to 10 seconds), repeat the above-described process again.

If it is determined to be worn normally in the first and second preparation steps: monitoring the pressure state of the hemostasis area based on sound wave data (S400); in the current state of normal wear, the current state of normal wear can be maintained for at least 5 minutes. To prevent this, the compression condition is monitored and a predetermined notification is generated when the compression condition is abnormal.

In the 1-1 monitoring step (S401) of calculating the 1-1 ratio, which is the average amplitude (A) of the 2-1 sound wave data divided by the average amplitude (A) of the 1-1 sound wave data, The 1-1 sound wave data, which is data measured through direct contact with the patient's wrist while wearing the device normally, is compared with the 2-1 sound wave data, which is data measured through indirect contact.

For example, the 1-1 ratio can be calculated to be about 60% (when the amplitude (A) of the pulse measured by direct contact is 100, the amplitude (A) of the pulse measured by indirect contact is 60 approx).

In the 1-2 monitoring step (S402) of recording the 1-2 sound wave data and the 2-2 sound wave data for a predetermined 1-3 time period based on the first sound wave sensor and the second sound wave sensor, During the 1st to 3rd hours, which is the section (time) in which the wearing state of the device is to be checked, 1st-2 sound wave data, which is data measured through direct contact with the wrist of the subject, and 2nd-, which is data measured through indirect contact, 2 Measure the sound wave data.

A 1-3 monitoring step (S403) of calculating a 1-2 ratio, which is a value obtained by dividing the average amplitude (A) of the 2-2 sound wave data by the average amplitude (A) of the 1-2 sound wave data; And a first calculating the 1-3 ratio by dividing the average period (P) (or average BPM) of the 2-2 sound wave data by the average period (P) (or average BPM) of the 1-2 sound wave data. In the -4 monitoring step (S404), the 1-2 sound wave data, which is data measured through direct contact with the wrist of the patient, is compared with the 2-2 sound wave data, which is data measured through indirect contact.

If the 1-2 ratio deviates from the 1-1 ratio by more than a predetermined 1-4 ratio: a 1-5 monitoring step (S405) of determining that the compression is defective; And if the 1-3 ratio is greater than or equal to the predetermined 1-5 ratio: the 1-6 monitoring step (S406) of determining that the compression is defective; in the indirect contact compared to the amplitude (A) of the pulse measured by direct contact. When the amplitude (A) of the pulse measured by the pulse is excessively lower than the normal state, or when the period (P) (or BPM) is measured differently due to the measurement of some pulses being omitted from the pulse measured by indirect contact. This can be judged as poor compression.

For example, in normal compression conditions, BPM will be measured at the same or nearly similar level (within a certain error range) for both the 2-2 sound wave data and the 1-2 sound wave data, but some pulse portions are included in the 2-2 sound wave data. If the measurement of is omitted, the BPM may be measured excessively low, and the 1-3 ratio may be measured very low.

In addition, the sensor unit includes: a camera 4 that is provided to face the inner direction of the band unit 1 and takes pictures of the wrist of the patient, and the control unit: based on the camera 4, determines a predetermined amount. A 2-1 preparation step of recording the first image for a 2-1 time period; A 2-2 preparation step of recognizing the first wrist object of the treatment recipient from the first image; A 2-3 preparation step of extracting a 1-1 boundary line and a 1-2 boundary line, which are the boundary lines of the first wrist object in the first image, based on the first wrist object; A 2-4 preparation step of calculating a first wrist thickness, which is the width of the first wrist object in the first image, based on the first wrist object; A 2-5 preparation step of determining whether the wear is normal based on the height of the 1-1 border line and the height of the 1-2 border line; If it is determined that the wearing is abnormal in the 2-5 preparation step: A band re-wearing notification is generated, and after waiting for a predetermined 2-1 time, the 2-1 to 2-5 preparation steps are performed. Re-performing preparatory steps 2-6; And if it is determined to be worn normally in the 2-5 preparation step: monitoring the pressure state of the hemostasis area based on the second image captured by the camera 4; controlled according to a control method including The step of monitoring the pressure state of the hemostasis area based on the second image includes: a 2-1 monitoring step of recognizing the second wrist object of the person receiving the treatment from the second image; A 2-2 monitoring step of extracting a 2-1 boundary line (B1) and a 2-2 boundary line (B2), which are boundaries of the second wrist object in the second image, based on the second wrist object; A 2-3 monitoring step of calculating a second wrist thickness, which is the width of the second wrist object in the second image, based on the second wrist object; A 2-4 monitoring step of calculating a first height difference, which is the difference between the height of the 2-1 boundary line (B1) and the height of the 1-1 boundary line; A 2-5 monitoring step of calculating a second height difference, which is the difference between the height of the 2-2 boundary line and the height of the 1-2 boundary line; A 2-6 monitoring step of calculating a 2-1 ratio that is a value obtained by dividing the first height difference by the first wrist thickness; A 2-7 monitoring step of calculating a 2-2 ratio obtained by dividing the second height difference by the first wrist thickness; A 2-8 monitoring step of calculating a 2-3 ratio, which is a value obtained by dividing the first wrist thickness by the second wrist thickness, and calculating a 2-4 ratio, which is a square of the 2-3 ratio; A 2-9 monitoring step of calculating a 2-5 ratio by multiplying the 2-1 ratio by the 2-4 ratio; A 2-10 monitoring step of calculating a 2-6 ratio by multiplying the 2-2 ratio by the 2-4 ratio; And when the absolute value of the 2-5th ratio or the absolute value of the 2-6th ratio is greater than or equal to the predetermined 2-7th ratio: a 2-11th monitoring step of determining that the compression is defective.

As shown in FIG. 1, the camera 4 is placed on one side of the band portion 1 or the compression portion 2 so that when worn, it is spaced a predetermined distance (height) away from the wrist of the recipient and faces the wrist. It can be fixed.

In the 2-1 preparation step of recording the first image for a predetermined 2-1 time based on the camera 4, immediately after the patient wears the device for hemostasis, the normal wearing state is first confirmed. To do this, the first image captured from the camera 4 is read.

Here, the 2-1 time may be approximately 5 to 30 seconds.

The 2-2 preparation step of recognizing the first wrist object of the patient from the first image is based on a predetermined artificial intelligence-based object recognition algorithm or steps according to an embodiment of the present invention described later. 1 From the images captured in the video, distinguish the skin (wrist) part of the person being treated and parts other than the skin (floor, wall, surroundings, etc.).

A 2-3 preparation step of extracting a 1-1 boundary line and a 1-2 boundary line, which are the boundary lines of the first wrist object in the first image, based on the first wrist object; The boundaries on both sides of , that is, the 1-1 boundary line and the 1-2 boundary line, are extracted respectively.

As shown in FIG. 5, the 1-1 boundary line and the 1-2 boundary line in the form of two straight lines/curves spaced apart from each other by a certain distance can be extracted from the still screen of the image.

In the 2-4 preparation step of calculating the first wrist thickness, which is the width of the first wrist object in the first image, based on the first wrist object, the 1-1 boundary line and the 1-2 boundary line The first wrist thickness, which is this spaced distance, is calculated.

According to the above-described process, it is possible to remember how much of the subject's wrist is captured by the camera 4 when in a normal compression state, and based on this, to detect a state in which compression is not performed normally due to a twisted wrist or device.

In the 2-5 preparation step of determining whether or not it is worn normally based on the height of the 1-1 border line and the height of the 1-2 border line, the 1-1 border line and the Based on the height of the 1-1 border line and the height of the 1-2 border line, which are values representing the distances between the 1-2 border lines, determine whether the compression unit 2 is placed at the correct position (hemostatic site) on the wrist. can do.

For example, normal wear is determined based on whether the height of the 1-1 border line and the height of the 1-2 border line are within a certain error range, and the compression unit 2 (camera 4) is positioned at the center of the wrist. It can be induced to be placed.

If it is determined that the wearing is abnormal in the 2-5 preparation step: A band re-wearing notification is generated, and after waiting for a predetermined 2-1 time, the 2-1 to 2-5 preparation steps are performed. In the 2-6 preparatory step of re-performing, since the hemostasis area is not normally compressed, the device generates a predetermined notification (notification to re-wear the band), and the 2-1 time (5 to 10 seconds) is After waiting, repeat the above-mentioned process again.

If it is determined to be worn normally in the 2-5 preparation step: monitoring the pressure state of the hemostasis area based on the second image captured by the camera 4; in the current state of normal wear, the current state of normal wear is at least The compression status is monitored so that it can be maintained for more than 5 minutes, and a predetermined notification is generated when the compression status is abnormal.

In the description of the present invention, in order to distinguish it from the first image, which is the image used in the initial setting, the image captured during the monitoring process is referred to as the second image, and the first wrist, which is the wrist part of the treatment recipient recognized in the first image, is referred to as the second image. In order to distinguish it from the object, the wrist of the subject recognized in the second image is referred to as the second wrist object.

In the 2-1 monitoring step of recognizing the second wrist object of the patient from the second image, the second wrist object of the patient is recognized from the last frame (the most recently captured frame) of the second image. do.

A 2-2 monitoring step of extracting a 2-1 boundary line (B1) and a 2-2 boundary line (B2), which are the boundary lines of the second wrist object in the second image, based on the second wrist object; , Boundaries on both sides of the second wrist object, that is, a 2-1 boundary line (B1) and a 2-2 boundary line (B2), are extracted, respectively.

As shown in FIG. 5, the 2-1 boundary line and the 2-2 boundary line in the form of two straight lines/curves spaced apart from each other by a certain distance can be extracted from the still screen of the image.

A 2-3 monitoring step of calculating a second wrist thickness, which is the width of the second wrist object in the second image, based on the second wrist object; in the 2-1 boundary line and the 2-2 boundary line The second wrist thickness, which is this separated distance, is calculated.

In the 2-4 monitoring step of calculating a first height difference, which is the difference between the height of the 2-1 borderline and the height of the 1-1 borderline, the height of the 1-1 borderline is a value measured in the initial setting process. Wow, the height difference of the 2-1 boundary line, which is the value measured in the monitoring process (currently), is calculated.

In the 2-5 monitoring step of calculating a second height difference, which is the difference between the height of the 2-2 borderline and the height of the 1-2 borderline, the height of the 1-2 borderline is a value measured in the initial setting process. Wow, the height difference of the 2-2 boundary line, which is the value measured in the monitoring process (currently), is calculated.

A 2-6 monitoring step of calculating a 2-1 ratio, which is a value obtained by dividing the first height difference by the first wrist thickness, in which the first height difference value occupies a certain ratio compared to the first wrist thickness. Calculate the 2-1 ratio, which is a value representing

A 2-7 monitoring step of calculating a 2-2 ratio, which is a value obtained by dividing the second height difference by the first wrist thickness, to determine what proportion the second height difference value occupies compared to the first wrist thickness. Calculate the 2-2 ratio, which is the value shown.

Therefore, the deviation of the pressure area can be determined in proportion to the thickness of the patient's wrist.

In the 2-8 monitoring step of calculating the 2-3 ratio, which is the value of dividing the first wrist thickness by the second wrist thickness, and calculating the 2-4 ratio, which is the square of the 2-3 ratio, the initial setting process The 2nd-3rd ratio, which is a comparison between the wrist thickness in the normal compression state and the wrist thickness in the monitoring process (current), is calculated, and the 2nd-4th ratio, which is the square of the wrist thickness, is calculated.

At this time, in the initial setting process (2-n preparation step), the first wrist thickness is set to the maximum value (the thickest length of the wrist thickness is the first wrist thickness), so that the 2-3 ratio is a value of 1 or more. It can be processed to have .

Here, the 2-3 ratio is squared to calculate the 2-4 ratio, and the change in wrist thickness can be further weighted to determine the compression state.

A 2-9 monitoring step of calculating a 2-5 ratio by multiplying the 2-1 ratio by the 2-4 ratio; and a 2-10 monitoring step of calculating a 2-6 ratio by multiplying the 2-2 ratio by the 2-4 ratio; Multiplying the ratios yields the 2-6 ratio, which is a value indicating how much the wrist deviates from its normal compression state.

When the absolute value of the 2-5 ratio or the absolute value of the 2-6 ratio is greater than or equal to the predetermined 2-7 ratio: the 2-11 monitoring step of determining that the compression is defective; in the predetermined value, the calculated values are predetermined values. If it is above the standard value (2-7 ratio), it can be judged as poor compression.

In addition, the 2-2 preparation step and the 2-1 monitoring step include: extracting a first image (I1), which is the last frame, from the first image or the second image; generating a second image (I2) by converting the color code of pixels whose color code is outside a predetermined range among each pixel of the first image (I1) to #000000; extracting a first boundary line, which is a boundary line of an area with a color code of #000000, from the second image (I2); extracting a second boundary line from among the first boundary lines, excluding the border (B) area of the second image (I2); extracting a plurality of first point pairs consisting of two points spaced apart from each other by a predetermined distance from among the pixels of the second boundary line; For each of the first point pairs, drawing a first line segment that connects two points included in each first point pair; For each of the first line segments, calculating a first slope, which is the slope of each first line segment; calculating a second slope that is an average of the first slopes; extracting third slopes within a predetermined error range from the second slope among the first slopes; extracting second point pairs that are first point pairs corresponding to the third slopes; drawing a curve connecting the second pair of points; and designating an area located between the pair of curves as the first wrist object or the second wrist object.

The 2-2 preparation step and the 2-1 monitoring step are: extracting the first image (I1), which is the last frame, from the first image or the second image; in the first image that is the subject of analysis/judgment Or, from the second image (the first image is designated in the 2-2 preparation step and the second image is designated in the 2-1 monitoring step), the first image I1 (still) is the last frame (most recent frame). image) is extracted.

Among each pixel of the first image (I1), converting the color code of pixels whose color code is outside a predetermined range to #000000 to generate a second image (I2); In the step, the color code corresponding to the skin color Replace/convert all pixels in areas other than to #000000 (black).

At this time, the 'predetermined range' may be a predetermined value based on data collection on skin color, etc.

For example, based on #FBCEB1, the '10' range for each RGB color is specified to be included in the 'predetermined range', and the color code included between #EBBEA1 and #FFDEC1 is regarded as the skin color, and the Pixels that fall outside the range can be converted to #000000.

In the step of extracting a first boundary line, which is a boundary line of an area with a color code of #000000, from the second image (I2), from an area with a color code of #000000 (black) in the second image (I2). , extract the first boundary line, which is the boundary line (outline).

In the step of extracting a second borderline from among the first borderlines, excluding the border (B) area of the second image (I2), the border (B) area that is the outline of the second image (I2) from among the first borderlines Except, the second boundary line, which is the outline of the wrist object, is extracted.

extracting a plurality of first point pairs consisting of two points spaced apart from each other by a predetermined distance from among the pixels of the second borderline; randomly extracting a plurality of pixels included in the second borderline; A plurality of first point pairs are extracted by matching pixels included in other second boundary lines spaced a predetermined distance from each other.

Here, it is preferable that the first point pairs include both end points of the second boundary line.

For each of the first point pairs, drawing a first line segment that is a line segment connecting two points included in each first point pair; connecting the two points included in each first point pair, forming a plurality of first Draw the line segments.

Accordingly, a plurality of first line segments of the same length are drawn along the second boundary line.

In the step of calculating a first slope, which is a slope of each first line segment, for each of the first line segments, slopes of the first line segments are respectively calculated.

In the step of calculating a second slope that is an average value of the first slopes, a second slope that is an average value of all first slopes is calculated.

In the step of extracting third slopes that are within a predetermined error range from the second slope among the first slopes, only the first slopes that are within a certain error range with respect to the second slope, which is the average value among the first slopes, are extracted, Designated as the third slope.

In the step of extracting second point pairs, which are first point pairs corresponding to the third slopes, the first point pairs corresponding to each of the extracted third slopes are designated as second point pairs.

In the step of drawing a curve connecting the second pair of points, a pair of curves is drawn by connecting the second pair of points.

In the step of designating an area located between the pair of curves as the first wrist object or the second wrist object, the portion between the pair of curves, which is the outline of the wrist object, is designated as the first wrist object (in the first image) Or, it is designated as the second wrist object (in the second image).

Additionally, the step of extracting the third slopes includes: calculating fourth slopes by performing a difference calculation on the second slope for each of the first slopes; calculating a first root mean square (RMS) from the fourth slope; extracting fifth slopes whose absolute value is less than or equal to the first root mean square of the fourth slopes; calculating a second root mean square from the fifth slope; Among the fifth slopes, extracting sixth slopes whose absolute value is less than or equal to the second root mean square; And designating the sixth slopes as the third slopes; comprising: drawing a curve connecting the second pair of points: for each pair of second points, included in each pair of second points A first curve drawing step of calculating first coordinates, which are the coordinates of each of the two points; a second curve drawing step of adding the first coordinates to a first array; A third curve drawing step of extracting four second coordinates based on the first coordinates, which are first coordinates that are within 4 ranks of the closest distance to the border (B) area of the second image (I2); a fourth curve drawing step of calculating six first distances, which are the distances between the four second coordinates, and extracting a second distance, which is a median value among the first distances; A fifth curve drawing step of extracting a third coordinate that is one of the second coordinates; A sixth curve drawing step of adding the third coordinate to a second array; a seventh curve drawing step of deleting the third coordinate from the first array; With respect to the third coordinate, 'the third distance, which is the distance between each of the 'first coordinates included in the first array' and the third coordinate, is closest, and the third distance is 80% of the second distance. An eighth curve drawing step of extracting fourth coordinates that are less than or equal to %; A ninth curve drawing step of adding the fourth coordinate to a second array; A tenth curve drawing step of deleting the fourth coordinate from the first array; An 11th curve that specifies the 4th coordinate as a new 3rd coordinate and repeats the '8th curve construction step to the 10th curve construction step' until the new 4th coordinate is not extracted in the 8th curve construction step. construction stage; A twelfth curve drawing step of drawing a first curve connecting fourth coordinates included in the second array; A thirteenth curve drawing step of extracting a fifth coordinate included in the first array from among the second coordinates; A fourteenth curve drawing step of adding the fifth coordinate to a third array; a fifteenth curve drawing step of deleting the fifth coordinate from the first array; With respect to the fifth coordinate, 'the fourth distance, which is the distance between each of the 'first coordinates included in the first array' and the fifth coordinate, is closest, and the fourth distance is 80 degrees of the second distance. A 16th curve drawing step of extracting a 6th coordinate that is less than or equal to %; A seventeenth curve drawing step of adding the sixth coordinate to a third array; An 18th curve drawing step of deleting the sixth coordinate from the first array; A 19th curve that specifies the 6th coordinate as a new 5th coordinate and repeats the '16th curve construction step to the 18th curve construction step' until the new 6th coordinate is not extracted in the 16th curve construction step. construction stage; and a twentieth curve drawing step of drawing a second curve connecting the sixth coordinates included in the third array.

In the step of calculating fourth slopes by calculating the second slope with respect to each of the first slopes, the fourth slopes are calculated by subtracting the second slope, which is an average value, from each of the first slopes.

In the step of calculating a first root mean square (RMS) from the fourth slope, the root mean square value is calculated based on the fourth slope values expressed as positive, negative, or 0.

Among the fourth slopes, in the step of extracting fifth slopes whose absolute value is less than or equal to the first root mean square, only the fourth slopes whose absolute value is less than or equal to the first root mean square are extracted and designated as the fifth slope.

In the step of calculating the second root mean square from the fifth slope, the root mean square is calculated again based on the extracted fifth slopes.

Among the fifth slopes, in the step of extracting sixth slopes whose absolute value is less than or equal to the second root mean square, only the fifth slopes whose absolute value is less than or equal to the second root mean square are extracted and designated as the sixth slope.

In the step of designating the sixth slopes as the third slopes, the extracted sixth slopes are extracted as third slopes.

According to this process, the tilt of parts other than the wrist (palm, etc.) is not designated as the third tilt.

For each pair of second points, a first curve drawing step of calculating first coordinates, which are the coordinates of each of the two points included in each pair of second points; Calculate coordinates. Here, the coordinates can be calculated in such a way that the lower left point of the border B area of the second image I2 is (0, 0).

In the second curve drawing step of appending the first coordinates to the first array, the first coordinates are stored/added to a predetermined array.

Here, an array refers to any one of a collection, and may refer to a collection whose size (length) can be changed.

Based on the first coordinates, a third curve drawing step of extracting four second coordinates, which are first coordinates whose distance to the border B of the second image I2 is within 4 ranks, Extract the first coordinates within the 4th order of distance from the border (B) area of the second image (I2), that is, the x-axis, y-axis, x=n, and y=m four straight lines, and use them as second coordinates. Specify (where n is the number of pixels in the vertical direction of the second image (I2), and m is the number of pixels in the horizontal direction of the second image (I2).

Accordingly, the four end points of the area representing skin color, such as the wrist, are extracted as second coordinates.

A fourth curve drawing step of calculating six first distances, which are the distances between the four second coordinates, and extracting a second distance, which is the median value among the first distances; in the diagonal component or wrist of the first distances, A second distance is extracted, which is a value (median value) representing the width (thickness) portion of the wrist, rather than the longitudinal distance.

Here, as shown in FIG. 5, the first image and the second image are preferably captured by a camera 4 having an angle of view that captures the length of the wrist longer than the thickness of the wrist.

In the fifth curve drawing step of extracting a third coordinate that is one of the second coordinates, one of the second coordinates is arbitrarily designated as the third coordinate, and steps described later are performed.

In the sixth curve drawing step of adding the third coordinate to the second array, the third coordinate is added to the second array to draw one curve. The third coordinate added in this step can be the starting point of the first curve.

In the seventh curve drawing step of deleting the third coordinate from the first array, the third coordinate already extracted to draw the first curve is deleted from the first array to prevent duplicate calculation.

With respect to the third coordinate, 'the third distance, which is the distance between each of the 'first coordinates included in the first array' and the third coordinate, is closest, and the third distance is 80% of the second distance. In the eighth curve drawing step of extracting the fourth coordinate that is less than or equal to %, the first coordinate that is closest to the third coordinate (the third distance is shortest) is found and designated as the fourth coordinate.

At this time, the first coordinate having the third distance exceeding 80% of the thickness of the wrist (second distance) is not designated as the fourth coordinate.

In the ninth curve drawing step of adding the fourth coordinate to the second array, the extracted fourth coordinate is added to the second array for drawing the first curve.

In the tenth curve drawing step of deleting the fourth coordinate from the first array, the fourth coordinate already extracted to draw the first curve is deleted from the first array to prevent duplicate calculation.

An 11th curve that specifies the 4th coordinate as a new 3rd coordinate and repeats the '8th curve construction step to the 10th curve construction step' until the new 4th coordinate is not extracted in the 8th curve construction step. In the drawing step, with respect to the nth extracted fourth coordinate, this is substituted into the 8th curve drawing step to the 10th curve drawing step as a new third coordinate to extract a new (n+1th) fourth coordinate. .

If, in the eighth curve drawing step, the distance from the third coordinate to the nearest first coordinate (third distance) exceeds 80% of the second distance, this is 'another second coordinate', so according to the process described later. It is used to draw the second curve, and the repetition ends without extracting the fourth coordinate anymore.

In the twelfth curve drawing step of drawing a first curve connecting the fourth coordinates included in the second array, the first curve is drawn by drawing a brush on the fourth coordinates included in the second array in order.

In the 13th curve drawing step to the 20th curve drawing step, a second curve is drawn based on the remaining second coordinates, and this can be processed in the same manner as the above-described first curve drawing process.

Although embodiments of the present invention have been described in more detail with reference to the accompanying drawings, the present invention is not necessarily limited to these embodiments, and various modifications may be made without departing from the technical spirit of the present invention. . Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but are for illustrative purposes, and the scope of the technical idea of the present invention is not limited by these embodiments. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive. The scope of protection of the present invention should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be construed as being included in the scope of rights of the present invention.

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

1: Band part
2: Compression part
3: Velcro
4: Camera
S100: 1-1 preparation step
S200: 1-2 preparation steps
S300: Preparatory steps 1-3
S400: Step of monitoring the pressure status of the hemostasis area based on sound wave data
S401: 1-1 monitoring step
S402: 1st-2 monitoring step
S403: 1-3 monitoring steps
S404: Monitoring steps 1-4
S405: Monitoring steps 1-5
S406: Monitoring steps 1-6
A: Amplitude
P: period
I1: first image
I2: 2nd image
B: border
B1: 2-1 boundary line
B2: 2-2 boundary line

Claims (3)

A band worn on the wrist of the person receiving the treatment;
A compression portion disposed inside the band portion to press the hemostasis area;
A sensor unit provided on at least one side of the compression unit and the band unit to collect sound wave data and image data; and
Including a control unit connected to the sensor unit and monitoring the pressure state of the hemostasis area based on the data detected by the sensor unit,
The control unit: generates a predetermined notification based on the pressure state of the hemostasis area,
The sensor unit:
A first sound wave sensor provided in the band portion;
A second sound wave sensor provided in the compression unit; and
A camera is provided to face the inner direction of the band unit to photograph the wrist of the patient,
The control unit:
A 1-1 preparation step of recording 1-1 sound wave data and 2-1 sound wave data for a predetermined 1-1 time based on the first sound wave sensor and the second sound wave sensor;
A 1-2 preparation step of determining whether or not it is worn normally based on the 1-1 sound wave data and the 2-1 sound wave data;
If abnormal wearing is determined in the 1-2 preparation step: A band re-wearing notification is generated, and after waiting for a predetermined 1-2 time, the 1-1 preparation step and the 1-2 preparation step are performed. Re-performing preparatory steps 1-3;
If it is determined to be worn normally in the first and second preparation steps: monitoring the pressure state of the hemostasis area based on sound wave data;
A 2-1 preparation step of recording a first image for a predetermined 2-1 time based on the camera;
A 2-2 preparation step of recognizing the first wrist object of the treatment recipient from the first image;
A 2-3 preparation step of extracting a 1-1 boundary line and a 1-2 boundary line, which are the boundary lines of the first wrist object in the first image, based on the first wrist object;
A 2-4 preparation step of calculating a first wrist thickness, which is the width of the first wrist object in the first image, based on the first wrist object;
A 2-5 preparation step of determining whether the wear is normal based on the height of the 1-1 border line and the height of the 1-2 border line;
If it is determined that the wearing is abnormal in the 2-5 preparation step: A band re-wearing notification is generated, and after waiting for a predetermined 2-1 time, the 2-1 to 2-5 preparation steps are performed. Re-performing preparatory steps 2-6; and
If it is determined to be worn normally in the 2-5 preparation step, it is controlled according to a control method including: monitoring the pressure state of the hemostasis area based on the second image captured by the camera,
The step of monitoring the pressure state of the hemostasis area based on the sound wave data is:
A 1-1 monitoring step of calculating a 1-1 ratio that is a value obtained by dividing the average amplitude of the 2-1 sound wave data by the average amplitude of the 1-1 sound wave data;
A 1-2 monitoring step of recording 1-2 sound wave data and 2-2 sound wave data for a predetermined 1-3 time period based on the first sound wave sensor and the second sound wave sensor;
A 1-3 monitoring step of calculating a 1-2 ratio that is a value obtained by dividing the average amplitude of the 2-2 sound wave data by the average amplitude of the 1-2 sound wave data;
A 1-4 monitoring step of calculating a 1-3 ratio by dividing the average period of the 2-2 sound wave data by the average period of the 1-2 sound wave data;
If the 1-2 ratio deviates from the 1-1 ratio by more than a predetermined 1-4 ratio: a 1-5 monitoring step of determining compression failure; and
When the 1-3 ratio is higher than the predetermined 1-5 ratio: a 1-6 monitoring step of determining that the compression is defective,
The step of monitoring the pressure state of the hemostasis area based on the second image is:
A 2-1 monitoring step of recognizing a second wrist object of the treatment recipient from the second image;
A 2-2 monitoring step of extracting a 2-1 boundary line and a 2-2 boundary line, which are the boundary lines of the second wrist object in the second image, based on the second wrist object;
A 2-3 monitoring step of calculating a second wrist thickness, which is the width of the second wrist object in the second image, based on the second wrist object;
A 2-4 monitoring step of calculating a first height difference, which is the difference between the height of the 2-1 boundary line and the height of the 1-1 boundary line;
A 2-5 monitoring step of calculating a second height difference, which is the difference between the height of the 2-2 boundary line and the height of the 1-2 boundary line;
A 2-6 monitoring step of calculating a 2-1 ratio that is a value obtained by dividing the first height difference by the first wrist thickness;
A 2-7 monitoring step of calculating a 2-2 ratio obtained by dividing the second height difference by the first wrist thickness;
A 2-8 monitoring step of calculating a 2-3 ratio, which is a value obtained by dividing the first wrist thickness by the second wrist thickness, and calculating a 2-4 ratio, which is a square of the 2-3 ratio;
A 2-9 monitoring step of calculating a 2-5 ratio by multiplying the 2-1 ratio by the 2-4 ratio;
A 2-10 monitoring step of calculating a 2-6 ratio by multiplying the 2-2 ratio by the 2-4 ratio; and
When the absolute value of the 2-5 ratio or the absolute value of the 2-6 ratio is greater than or equal to the predetermined 2-7 ratio: a 2-11 monitoring step of determining that the compression is defective;
Compression hemostasis band device capable of detecting deviation of hemostasis area
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