KR101739650B1 - Apparatus for sensing bubble of satety intravenous infusion - Google Patents

Apparatus for sensing bubble of satety intravenous infusion Download PDF

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Publication number
KR101739650B1
KR101739650B1 KR1020150133294A KR20150133294A KR101739650B1 KR 101739650 B1 KR101739650 B1 KR 101739650B1 KR 1020150133294 A KR1020150133294 A KR 1020150133294A KR 20150133294 A KR20150133294 A KR 20150133294A KR 101739650 B1 KR101739650 B1 KR 101739650B1
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South Korea
Prior art keywords
tube
blood
infrared
bubbles
infrared light
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KR1020150133294A
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Korean (ko)
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KR20170034994A (en
Inventor
양태헌
우삼용
이정은
임채성
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한국표준과학연구원
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/36—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests with means for eliminating or preventing injection or infusion of air into body
    • A61M5/365—Air detectors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/16804—Flow controllers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/16831—Monitoring, detecting, signalling or eliminating infusion flow anomalies
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/3577—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing liquids, e.g. polluted water

Abstract

The present invention relates to a medical bubble detection device, a bubble detection method, a bubble detection notification system, and a notification method for secure fluid infusion / blood injection. More particularly, the present invention relates to a medical bubble detection apparatus for detecting air bubbles in a liquid solution / blood injected by being inserted into one side of a liquid / blood tube for injecting liquid or blood into a patient, An infrared light emitting unit for emitting infrared light; At least one infrared light-receiving unit provided at one side of the tube for receiving infrared rays emitted by the infrared ray emitting unit and measuring the amount of light in real time; And analyzing means for detecting presence / absence of air bubbles in the infusion / blood based on the measurement data measured by the infrared light receiving portion. [0002] The present invention relates to a medical bubble detection device for safe infusion / blood injection.

Description

Technical Field [0001] The present invention relates to a bubble detection notification system and a notification method for safe infusion /

The present invention relates to a medical bubble detection device, a bubble detection method, a bubble detection notification system, and a notification method for secure fluid infusion / blood injection.

There are many cases where a bubble (air bubble) is present in the liquid in a device for transferring a substance made of chemical, drug, blood or other liquid through a tube / tube.

In particular, in the medical field, such as an infusion pump, a hemodialyzer, a medical circulation assist device, and the like, air embolism in which vascular tissue is injured when air bubbles are injected may occur, which is more dangerous. Air embolism occurs when air bubbles circulate along arteries or veins, blocking blood vessels. This occurs when bubbles are included during the process of forcible infusion of fluid, anesthetic fluid, or blood in the operating room, recovery room, and neonatal room. These air embolisms can cause serious illnesses by blocking the blood vessels of the brain, pulmonary veins, and cardiovascular system (adults are 8 ml, newborn infants are at risk of death from inflow of air bubbles). 1 schematically shows a configuration of a conventional drug injection device 1. As shown in Fig. Figure 2 shows an X-ray of a patient with air embolism.

In addition, when air bubbles enter the fuel in automobiles or other equipment, efficiency may be reduced or the engine may be damaged. There are also a number of fields in which it is necessary to detect air bubbles in tubes or vials through which liquid flows in a variety of industries. The present invention mainly focuses on medical drug / blood infusion pumps, medical circulation aids, It can be applied as it is.

The infusion pump 1 is basically composed of a supply means 4 for moving the drug of the tube 6 connected to the fluid bag / liquid bottle, a bubble generator An air sensor, an occlusion sensor that detects clogging when the tube is broken when the drug enters the tube, the lock of the fluid set is locked, or the fluid is solidified, And a drop sensor that senses the drop of liquid from the cylinder of the liquid set is optionally installed.

A conventional drug injection device uses an ultrasonic wave bubble sensor to detect bubbles in a tube. An ultrasonic wave bubble sensor (5) is a device that inserts a tube through which a drug flows between an emitting part of an ultrasonic wave and a receiving part of an ultrasonic wave, and when the ultrasonic wave passes through the air, the ultrasonic wave is weakened to detect bubbles.

In a conventional infusion pump 1, an ultrasonic wave bubble sensor 5 is used to detect bubbles 3 in a fluid-set tube 6 through which a drug flows, If the receiving part is not closely contacted, the bubble 3 may malfunction due to the presence of bubbles. Even if the tube is erroneously mounted a little while the tube is mounted, it may cause malfunction as in the case of bubbles. Particularly, In this case, the bubble sensor does not detect bubbles in the liquid set tube 6.

In addition, the medium of the career image of the ultrasonic wave is partially heated to cause cavitation in which small bubbles are generated in the liquid, and the pressure when the bubbles generated by this cavitation burst and the pressure in the bubbles Due to the discharge of ultrasound, the material undergoes a mechanical action or chemical change. For example, bacteria or red blood cells are destroyed when they are subjected to ultrasound, and polymers and the like are broken off.

Therefore, this chemistry or erythrocyte destruction may cause problems for use in drug / blood injection devices. In addition, it is difficult to reduce the size of the ultrasonic wave detection area when detecting air bubbles by an ultrasonic wave. Therefore, when the size of bubbles detected by a conventional drug injection pump is small, There is a problem. Ultrasonic waves, especially in the chemical action, cause cavitation in the liquid, which generates fine bubbles in the liquid, and it can generate strong heat as it bursts, possibly damaging the drug.

Particularly, in a part of a liquid set for a cancer patient used in a drug infusion device, the surface of the liquid set is made rough, and an ultrasonic wave bubble sensor may have bubbles in the tube due to the air existing on the rough surface of the tube. There is a problem that the bubble can not be detected due to malfunction.

Also, in terms of technology and economy, the ultrasonic generator is complicated to implement, and the material cost is high and the power consumption is also high. In the case of the drug infusion device, this part is also important because the time it takes for the battery to operate must be long enough for the patient to work outside the room.

In other words, it is difficult to secure the stability by using the ultrasonic bubble detection sensor in the past, and there is a problem of small bubbles, atomic bond breakage, oxidation / reduction occurrence due to cavitation, errors due to contact conditions with the liquid tube, It is difficult to realize with low power and it is difficult to apply at present hospital.

Korea Patent Publication No. 2013-0037350 Japanese Patent Application Laid-Open No. 10-263078 Japanese Patent Laid-Open No. 2008-541902

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide an infrared ray receiving apparatus, By adopting the method of detecting the bubbles in the tube, it does not cause a chemical reaction to the drug administered compared to the conventional ultrasonic bubble sensor, and even in the case of blood, the action of destroying the red blood cells does not occur, In addition, in the case of the conventional ultrasonic bubble sensor, the ultrasonic transmission part or the receiving part may not be in close contact with the tube when the tube is mounted. In this case, the infrared sensor according to the present invention may not bubble For safe infusion / blood injection To provide ryoyong bubble detecting device, the bubble detection methods it is an object.

Particularly, in some cases, a rough surface is formed on the surface of the tube, so that it is impossible to detect air bubbles in the conventional ultrasonic bubble sensor. In this case, according to one embodiment of the present invention, the infrared bubble sensor Irrespective of the surface condition (roughness) of the surface of the liquid set, it is possible to detect the air bubbles in the tube, and in particular, in the case of the blood-related injection device or the medical circulation assist device, the ultrasonic wave destroys the red blood cells The infrared bubble sensor according to an embodiment of the present invention does not pose a risk to the blood to be administered or circulated, and thus can be used safely for detecting bubbles in the blood. A medical bubble detection device for infusion, a bubble detection method, There is.

According to an embodiment of the present invention, there is provided a bubble detection device for medical use, a bubble detection method, and a bubble detection method for injecting safe fluid / blood which can be implemented at low cost and can be driven at low power consumption, compared with existing ultrasonic bubble sensors, The purpose is to provide.

Further, according to the embodiment of the present invention, the presence or absence of bubbles is detected based on the slope value of the measurement data graph for the amount of light measured by the infrared light-receiving part, rather than the light amount value, The present invention is directed to a medical bubble detection device and a bubble detection method for injecting safe liquid / blood into a blood vessel.

According to an embodiment of the present invention, not only bubble detection but also notification means for transmitting bubble presence information can be transmitted to a user terminal set by a communication means such as a medical staff, a guardian, etc., A medical bubble detection notification system capable of monitoring injection status and information in real time, and a bubble detection notification method.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are not intended to limit the invention to the precise form disclosed. It can be understood.

A first object of the present invention is to provide a medical bubble detection device for detecting bubbles in injected liquid / blood mounted on one side of a liquid / blood tube for injecting liquid or blood into a patient, An infrared ray emitting portion for irradiating the tube side with infrared rays; At least one infrared light-receiving unit provided at one side of the tube for receiving infrared rays emitted by the infrared ray emitting unit and measuring the amount of light in real time; And analyzing means for detecting the presence or absence of air bubbles in the infusion / blood based on the measurement data measured by the infrared light receiving portion. The medical bubble detection device for safe infusion / blood injection may be achieved.

The display unit may further include a display unit for displaying the measurement data in real time, and the analyzing unit may detect the presence or absence of bubbles based on the slope of the light amount graph according to the time displayed on the display unit.

The analysis means may determine that the meniscus of the bubbles passes through the tube when the slope of the graph exceeds a predetermined slope value.

In addition, the analyzing means may detect the amount of bubbles by sensing the flow rate of the liquid / blood based on the slope value of the graph.

The light emitting unit may further include a light emission control unit for controlling the infrared light emitting unit to emit infrared light in a pulse shape having a specific period.

The apparatus may further include a moving unit for adjusting the position of the infrared ray receiving unit.

The infrared ray receiving unit includes at least one first infrared ray receiving unit disposed at a position opposite to the infrared ray emitting unit so that the infrared ray emitted from the infrared ray emitting unit is received, And at least one second infrared ray-receiving unit installed at a specific angle from the first infrared-ray receiving unit.

The bubble detection device may further include detachment means for detachably attaching the bubble detection device to the tube.

A second object of the present invention is to provide a method for detecting air bubbles in infused liquid / blood which is mounted on one side of a liquid / blood tube for injecting liquid or blood into a patient, the method comprising the steps of: Mounting a medical bubble detection device having a light receiving portion and analysis means; Injecting fluid or blood into the tube; The infrared ray emitting unit irradiates infrared rays into the tube, the infrared ray receiving unit receives the infrared ray and measures the amount of light in real time; The amount of light measured at the infrared light receiving portion is changed drastically when a meniscus of bubbles contained in the tube passes through the infrared light emitting portion; And detecting the presence or absence of air bubbles on the basis of the degree of change of the amount of light. The medical bubble detection method for safe infusion of blood / blood can be achieved.

In addition, in the measuring step, the display unit may display the measurement data measured in the infrared light-receiving unit in real time, and in the sensing, the analyzing means may calculate the slope value of the light amount graph, And when it exceeds the set slope value, it judges that the meniscus of the bubble passes through the tube.

In the detecting step, the analyzing unit may detect the flow rate of the liquid / blood based on the slope value of the graph.

A third object of the present invention is to provide a medical bubble detection notification system for detecting bubbles in injected liquid / blood attached to one side of a liquid / blood tube for injecting liquid or blood into a patient, A storage unit for storing the liquid or blood; a supplying unit for supplying the liquid or the blood stored in the storing unit to the tube side; An infrared light emitting unit provided at one side of the tube and irradiating the tube side with infrared light and at least one infrared light receiving unit provided at one side of the tube for receiving the infrared light irradiated by the infrared light emitting unit and measuring the amount of light in real time, Bubble detection device; A display unit for displaying the measurement data with respect to the light amount measured by the infrared light receiving unit in real time; Analyzing means for determining whether the meniscus of the bubbles passes through the tube and detecting the presence or absence of bubbles in the tube when the tilt value of the light amount graph according to the time displayed on the display unit exceeds a predetermined inclination value; And notification means for transmitting a notification signal when bubbles are detected in the tube by the analyzing means. The medical bubble detection notification system for safe infusion / blood injection can be achieved.

The control unit may further include a control unit for controlling the supply unit to stop operation when the bubble is sensed in the tube by the analysis unit.

The analyzing means senses the flow rate of the liquid / blood based on the slope value of the graph, and the controller controls the supply means based on the flow velocity value sensed by the analyzing means to adjust the flow rate .

The analyzing unit may further include communication means for transmitting a notification signal indicating presence / absence of bubbles to the predetermined user terminal.

A fourth object of the present invention is to provide a method for detecting and reporting bubbles in infused liquid / blood attached to one side of a liquid / blood tube for injecting liquid or blood into a patient, comprising the steps of: Mounting a medical bubble detection device having an infrared light receiving portion and analysis means; Injecting fluid or blood into the tube; The infrared ray emitting unit irradiates infrared rays into the tube, the infrared ray receiving unit receives the infrared ray and measures the amount of light in real time; Displaying the measurement data measured in the infrared light receiving unit in real time on the display unit; The amount of light measured at the infrared light receiving portion is changed drastically when a meniscus of bubbles contained in the tube passes through the infrared light emitting portion; When the analysis means determines that the meniscus of the bubbles passes through the tube and detects the presence or absence of bubbles in the tube when the slope value of the light amount graph according to the time displayed on the display unit exceeds a predetermined slope value ; And transmitting a notification signal when the notification means has caused the bubble to be detected in the tube by the analyzing means. The medical bubble detection notification method for safe infusion / blood injection may be achieved.

According to an embodiment of the present invention, the infrared ray emitted from the infrared ray emitting part is transmitted through the tube, and the infrared ray receiving part detects the infrared ray amount to detect bubbles in the tube. Thus, compared to the conventional ultrasonic bubble sensor In addition, in the case of a conventional ultrasonic bubble sensor, it is possible to detect the bubble in the tube by the ultrasonic transmitter or the receiver when the tube is attached, The infrared sensor according to the present invention has the effect of detecting bubbles in the tube even if the tube, the light emitting part and the light receiving part are not closely attached to each other.

Particularly, in some cases, a rough surface is formed on the surface of the tube, so that it is impossible to detect air bubbles in the conventional ultrasonic bubble sensor. In this case, according to one embodiment of the present invention, the infrared bubble sensor Irrespective of the surface condition (roughness) of the surface of the liquid set, it is possible to detect the air bubbles in the tube, and in particular, in the case of the blood-related injection device or the medical circulation assist device, the ultrasonic wave destroys the red blood cells The infrared bubble sensor according to the embodiment of the present invention has an advantage that it can be suitably used for detecting bubbles in the blood because it does not pose a risk to the blood to be administered or circulated.

Also, according to the embodiment of the present invention, it is possible to implement the ultrasonic bubble sensor in a simpler manner, lower cost, and less power consumption than the conventional ultrasonic bubble sensor.

Further, according to the embodiment of the present invention, the presence or absence of bubbles is detected based on the slope value of the measurement data graph for the amount of light measured by the infrared light-receiving part, rather than the light amount value, .

According to an embodiment of the present invention, not only bubble detection but also notification means for transmitting bubble presence information can be transmitted to a user terminal set by a communication means such as a medical staff, a guardian, etc., It has the advantage of monitoring injection status and information in real time.

It should be understood, however, that the effects obtained by the present invention are not limited to the above-mentioned effects, and other effects not mentioned may be clearly understood by those skilled in the art to which the present invention belongs It will be possible.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description, serve to further the understanding of the technical idea of the invention, It should not be construed as limited.
1 is a schematic view showing a configuration of a conventional drug infusion device,
Figure 2 shows the X-ray of the patient with air embolism
3 is a perspective view of a medical bubble detection device for safe infusion / blood injection according to an embodiment of the present invention,
FIG. 4 and FIG. 5 are perspective views of a medical bubble detecting device according to an embodiment of the present invention mounted on a tube,
6A is a perspective view of an infrared ray emitting unit according to an embodiment of the present invention,
6B is a perspective view of an infrared ray receiving portion according to an embodiment of the present invention,
FIG. 7A is a graph showing a light amount change graph according to time displayed on a display according to an embodiment of the present invention,
FIG. 7B is an enlarged view of a portion A in FIG. 7A,
FIG. 8 is a graph schematically showing a graph of a light amount change according to bubbles in a tube according to an embodiment of the present invention,
9 is a cross-sectional view illustrating an infrared ray emitting unit according to an embodiment of the present invention and an infrared ray receiving unit moved by a moving unit with respect to a tube,
10 is a cross-sectional view illustrating an infrared ray emitting unit according to an embodiment of the present invention and three infrared ray receiving units arranged to be spaced apart from each other by a specific angle with respect to a tube,
FIG. 11 is a graph showing a graph of the amount of light of the first infrared ray receiving unit and the second infrared ray receiving unit when the infrared ray is transmitted in a liquid state according to an embodiment of the present invention, and a graph of the amount of infrared rays transmitted through the first infrared ray receiving unit and the second infrared ray receiving unit A table schematically showing a light amount graph,
12 is a graph showing an infrared optical graph irradiated in a pulse form of a specific period according to an embodiment of the present invention,
13 is a block diagram of a medical bubble detection notification system for safe infusion / blood injection according to an embodiment of the present invention;
FIG. 14 is a block diagram of a medical bubble detection notification system for safe infusion / blood injection according to an embodiment of the present invention;
FIG. 15 is a flowchart illustrating a medical bubble detection notification method for safe infusion / blood injection according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, and advantages of the present invention will become more readily apparent from the following description of preferred embodiments with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art.

In this specification, when an element is referred to as being on another element, it may be directly formed on another element, or a third element may be interposed therebetween. Also in the figures, the thickness of the components is exaggerated for an effective description of the technical content.

Embodiments described herein will be described with reference to cross-sectional views and / or plan views that are ideal illustrations of the present invention. In the drawings, the thicknesses of the films and regions are exaggerated for an effective description of the technical content. Thus, the shape of the illustrations may be modified by manufacturing techniques and / or tolerances. Accordingly, the embodiments of the present invention are not limited to the specific forms shown, but also include changes in the shapes that are produced according to the manufacturing process. For example, the etched area shown at right angles may be rounded or may have a shape with a certain curvature. Thus, the regions illustrated in the figures have attributes, and the shapes of the regions illustrated in the figures are intended to illustrate specific forms of regions of the elements and are not intended to limit the scope of the invention. Although the terms first, second, etc. have been used in various embodiments of the present disclosure to describe various components, these components should not be limited by these terms. These terms have only been used to distinguish one component from another. The embodiments described and exemplified herein also include their complementary embodiments.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. The terms "comprises" and / or "comprising" used in the specification do not exclude the presence or addition of one or more other elements.

In describing the specific embodiments below, various specific details have been set forth in order to explain the invention in greater detail and to assist in understanding it. However, it will be appreciated by those skilled in the art that the present invention may be understood by those skilled in the art without departing from such specific details. In some instances, it should be noted that portions of the invention that are not commonly known in the description of the invention and are not significantly related to the invention do not describe confusing reasons to explain the present invention.

Hereinafter, the configuration and function of the medical bubble detection device 10 for safe fluid injection / blood injection according to an embodiment of the present invention and the bubble detection method will be described.

The medical bubble detection device 10 according to an embodiment of the present invention is mounted on one side of a sap tube 6 for injecting sap, blood, drug, etc. (hereinafter collectively referred to as sap) (3) in the liquid. The medical bubble detection device 10 according to an embodiment of the present invention basically uses an infrared sensor.

FIG. 3 shows a perspective view of a medical bubble detection device 10 for safe infusion / blood injection according to an embodiment of the present invention. 4 and 5 are perspective views of the medical bubble detecting apparatus 10 according to an embodiment of the present invention mounted on the tube 6. As shown in Fig. 6A is a perspective view of the infrared ray emitting unit 11 according to an embodiment of the present invention. 6B is a perspective view of an infrared ray receiving unit 12 according to an embodiment of the present invention.

3 and 4 and 5, the medical bubble detecting device 10 for safe infusion / blood infusion according to an embodiment of the present invention includes an infrared ray emitting portion 11, an infrared ray receiving portion 12, The analyzing means 30, the attaching / detaching means 40, the battery 51 for supplying power, and the like.

The medical bubble detecting apparatus 10 according to the embodiment of the present invention is installed such that the tube 6 through which the fluid flows by the attachment and detachment means 40 is mounted between the infrared ray emitting portion 11 and the infrared ray receiving portion 12 .

Therefore, the infrared ray emitting portion 11 is provided at one side of the tube 6 and irradiates the infrared ray toward the tube 6 side so as to be substantially perpendicular to the longitudinal direction of the tube 6. [ The infrared ray receiving unit 12 receives the infrared ray irradiated by the infrared ray emitting unit 11 and measures the quantity of light in real time.

The analyzing means 30 detects the presence or absence of bubbles 3 in the liquid based on the measurement data measured by the infrared ray receiving unit 12. [

The medical bubble detecting apparatus 10 according to an embodiment of the present invention includes a display unit 20 for displaying measurement data on the amount of light measured by the infrared ray receiving unit 12 in real time.

FIG. 7A is a graph showing a change in light amount with time displayed on a display according to an embodiment of the present invention, and FIG. 7B is an enlarged view of a portion A in FIG. 7A.

FIG. 8 is a graph schematically showing a graph of a change in light amount according to bubbles 3 in the tube 6 according to an embodiment of the present invention.

The analysis unit 30 detects the presence or absence of the bubble 3 based on the slope value of the light amount graph according to the time displayed on the display unit 20.

7A and FIG. 7B and FIG. 8, the measurement data according to the time displayed on the display unit 20 is obtained by irradiating infra-red light to the inflow liquid and measuring the amount of light received by the infrared light- And the amount of light received by the infrared ray receiving unit 12 are different from each other.

In particular, when the infrared rays are irradiated to the meniscus side of the bubble 3, as shown in FIG. 8, the amount of light is drastically changed by the lens effect.

Therefore, the analyzing means 30 according to the embodiment of the present invention is characterized in that when the slope of the graph for the measurement data exceeds the predetermined slope value, the meniscus of the bubble 3 passes through the tube 6 And senses the bubbles 3 flowing in the liquid.

 In addition, the analysis means 30 according to an embodiment of the present invention can sense the flow rate of the liquid flowing in the tube 6 based on the slope value of the measurement data. Therefore, based on the measured flow rate value, the control unit 50 can control the fluid supply means 4 composed of a flow rate measuring pump or the like to adjust the flow rate of the fluid in the tube 6. [

In addition, the medical bubble detecting apparatus 10 according to the embodiment of the present invention may include a moving unit 13 for adjusting the position of the infrared ray receiving unit 12. 9 is a sectional view showing an infrared ray emitting portion 11 according to an embodiment of the present invention and an infrared ray receiving portion 12 moved by a moving means 13 with respect to a tube 6.

As shown in FIG. 9, it can be seen that the moving means 13 is configured to change the position and angle of the infrared ray receiving portion 12. Therefore, the position and angle of the infrared ray receiving portion 12 are changed by the moving means 13, and the infrared light receiving portion 12 is positioned at an optimum position to reliably distinguish the bubble 3 from the bubble 3, taking into account the refraction, reflection, The infrared light-receiving portion 12 can be disposed.

In addition, the infrared ray receiving unit 12 according to an embodiment of the present invention may be arranged in a plurality of positions so as to be spaced from each other by a specific angle. 10 is a sectional view showing an infrared ray emitting part 11 according to an embodiment of the present invention and three infrared ray receiving parts 12 arranged so as to be separated from each other by a specific angle with respect to the tube 6. As shown in FIG. 11 is a graph showing a light amount graph of the first infrared ray receiving unit 12-1 and the second infrared ray receiving unit 12-2 when the infrared ray is transmitted in the liquid inflow condition according to an embodiment of the present invention, The light amount graphs of the first infrared ray receiving section 12-1 and the second infrared ray receiving section 12-2 are schematically shown.

11, the infrared ray receiving unit 12 according to an embodiment of the present invention may include at least one infrared ray receiving unit 11 disposed at a position opposite to the infrared ray emitting unit 11 so that the infrared ray irradiated from the infrared ray emitting unit 11 is received. A second infrared ray receiving unit 12-2 provided at a predetermined angle from the first infrared ray receiving unit 12-1 so as to receive the infrared ray refracted and reflected by the tube 6, As shown in FIG.

11, the amount of light in both the first infrared ray receiving section 12-1 and the second infrared ray receiving section 12-2 is changed suddenly in the fluid state and the bubble state 3, The slope of the meniscus is rapidly changed. Therefore, the analysis means 30 analyzes both of the measurement data measured by the first infrared-ray receiving portion 12-1 and the second infrared-ray receiving portion 12-2, and calculates the air bubble in the tube 6 based on the slope value of the graph 3) can be detected more precisely.

The medical bubble detection apparatus 10 according to an embodiment of the present invention may include a light emission control unit 14 that controls the infrared ray emission unit 11 to emit infrared rays in a pulse form having a specific period .

FIG. 12 shows an infrared light graph illuminated in pulse form at a specific period according to an embodiment of the present invention. As shown in FIG. 12, in order to reduce the power consumption of the infrared ray emitting unit 11, it is possible to control the infrared ray to be irradiated in a pulse form having a specific period. In addition, the frequency and duration of the pulse can be determined taking into account the average flow rate of the fluid.

Hereinafter, a method of detecting air bubbles in the liquid using the above-described medical bubble detecting device 10 will be described. The aforementioned medical bubble detection device 10 is first attached to the infusion tube 6 by the attachment / detachment means 40 so as to be located between the infrared ray emitting portion 11 and the infrared ray receiving portion 12.

When the inflow of the liquid into the tube 6 is started by the liquid supply means 4, the infrared ray emitting portion 11 irradiates the infrared ray to the tube 6 side, and the infrared ray receiving portion 12 receives the irradiated infrared ray And the measurement data is acquired by measuring the light quantity in real time.

The display unit 20 displays the measurement data measured by the infrared ray receiving unit 12 in real time. When the meniscus of the bubbles 3 contained in the tube 6 passes through the infrared ray emitting portion 11, the amount of light measured by the infrared ray receiving portion 12 is rapidly changed.

When the quantity of light changes abruptly, the analysis means 30 senses the presence or absence of the bubble 3 based on the degree of change of the quantity of light. Specifically, when the slope value of the graph of the amount of light according to the time displayed on the display unit 20 exceeds a predetermined slope value, the analysis means 30 determines that the meniscus of the bubble 3 It is determined to pass through the tube 6 and the bubble 3 is sensed.

At the same time, the analyzing means 30 senses the flow rate of the liquid based on the slope value of the graph. Based on the flow rate value, the emission control unit 14 controls the infrared ray emitting unit 11 to calculate the frequency and duration of the infrared ray pulse And the flow rate can be controlled by controlling the fluid supply means 4. [

Hereinafter, the configuration, function, and notification method of the medical bubble detection notification system 100 for safe infusion of fluid according to an embodiment of the present invention will be described. 13 is a block diagram of a medical bubble detection notification system 100 for safe infusion / blood injection according to an embodiment of the present invention. 14 is a block diagram of a medical bubble detection notification system 100 for safe infusion of fluid according to an embodiment of the present invention.

The medical bubble detection notification system 100 according to an embodiment of the present invention includes all the components of the bubble detection device 10 described above. And a supply unit 4 for supplying the liquid stored in the storage unit to the tube 6. The infrared ray emitting unit 11 and the infrared ray receiving unit 12 A bubble detection device 10 for a raw material including an analysis means 30, a display portion 20 and a detachment means 40; a notification means 60; a communication means 70; .

The bubble detection device 10 includes an infrared ray emitting portion 11 for emitting infrared light to the tube 6 side and an infrared ray emitting portion 11 for receiving the infrared ray irradiated by the infrared ray emitting portion 11 to measure the amount of light in real time A display unit 20 for displaying at least one infrared light receiving unit 12 and measurement data on the amount of light measured by the infrared light receiving unit 12 in real time and a display unit 20 for displaying a slope The analysis means 30 for judging the meniscus of the bubble 3 to pass through the tube 6 and detecting the presence or absence of the bubble 3 in the tube 6 when the value exceeds the predetermined slope value .

When the bubble 3 is sensed in the tube 6 by the analyzing means 30, the notifying means 60 sends a notification signal. The notification means 60 can send a notification signal to the user, such as the notification speaker 61 or the like, and can transmit the notification signal visually to the user, such as the notification LED 62 or the like. The specific form, method and means are not limited to the scope of the present invention as long as it can inform the user whether or not the bubble (3) is present.

The control unit 50 can also control to stop the supply of the liquid by the supply unit 4 when the analysis unit 30 detects the bubble 3 in the tube 6. [ As described above, the analyzing means 30 can sense the flow rate of the liquid based on the slope value of the graph, and the control unit 50 controls the flow rate of the liquid based on the flow velocity value sensed by the analyzing means 30, The emission control unit 14 can control the frequency and the duration of the infrared pulse by controlling the infrared ray emitting unit 11 based on the flow rate value.

The medical bubble detection notification system 100 according to an embodiment of the present invention may further include information on the presence or absence of the bubble 3 determined by the analysis means 30 through the communication unit 70, Lt; / RTI > That is, information on the presence or absence of the bubbles 3 is transmitted to the user terminal 80 set by the medical staff, the caregiver, and the like.

Hereinafter, a medical bubble detection notification method for safe infusion / blood injection according to an embodiment of the present invention will be described. FIG. 15 is a flowchart illustrating a medical bubble detection notification method for safe infusion / blood injection according to an embodiment of the present invention.

First, the above-described medical bubble detecting device 10 is mounted by the attachment / detachment means 40 so that the liquid receiving tube 6 is positioned between the infrared ray emitting portion 11 and the infrared ray receiving portion 12 (S1).

Then, when the liquid is injected into the tube 6 by the supply means 4 (S2), the infrared ray emitting portion 11 irradiates infrared rays toward the tube 6, and the infrared ray receiving portion 12 receives the irradiated infrared rays And the amount of light is measured in real time (S3).

Then, the display unit 20 displays measurement data measured by the infrared light-receiving unit 12 in real time (S4). When the meniscus of the bubbles 3 contained in the tube 6 passes through the infrared ray emitting portion 11, the amount of light measured by the infrared ray receiving portion 12 is rapidly changed (S5).

When the slope value of the light amount graph according to the time displayed on the display unit 20 exceeds the predetermined slope value, the analysis means 30 causes the meniscus of the bubble 3 to pass through the tube 6 And the presence or absence of the bubble 3 in the tube 6 is sensed (S6).

When it is determined by the analysis means 30 that the bubble 3 is present in the liquid, the notification means 60 sends a notification signal via the notification speaker 61 and the notification LED 62 (S7) .

The information on the presence or absence of the bubble 3 determined by the analysis means 30 is transmitted to the predetermined user terminal 80 through the communication means 70 (S8). That is, information on the presence or absence of the bubbles 3 is transmitted to the user terminal 80 set by the medical staff, the caregiver, and the like.

It should be noted that the above-described apparatus and method are not limited to the configurations and methods of the embodiments described above, but the embodiments may be modified so that all or some of the embodiments are selectively combined .

1: Conventional drug infusion device
2: sap
3: Bubble
4: Supply means
5: Ultrasonic bubble sensor
6: Tube
10: medical bubble detection device
11: Infrared ray emitting portion
12: Infrared ray detector
12-1: First infrared ray detector
12-2: Second infrared ray detector
13: Moving means
14:
20:
30: Analytical means
40: attachment / detachment means
50:
60: Notification means
61: Speaker for notification
62: LED for notification
70: Communication means
80: User terminal
100: medical bubble detection notification system

Claims (16)

A medical bubble detection notification system for detecting and reporting bubbles in infused liquid / blood attached to a side of a liquid / blood tube for injecting liquid or blood into a patient,
A storage unit for storing the liquid or blood to be infused to the patient; a supply unit for supplying the liquid or blood stored in the storage unit to the tube side;
An infrared light emitting unit provided at one side of the tube and irradiating the tube side with infrared light and at least one infrared light receiving unit provided at one side of the tube for receiving the infrared light irradiated by the infrared light emitting unit and measuring the amount of light in real time, Bubble detection device;
A display unit for displaying measurement data on the amount of light measured by the infrared light receiving unit in real time;
Analyzing means for determining whether the meniscus of the bubbles passes through the tube and detecting the presence or absence of bubbles in the tube when the tilt value of the light amount graph according to the time displayed on the display unit exceeds a predetermined inclination value;
Notification means for transmitting a notification signal when bubbles are detected in the tube by the analysis means; And
And control means for stopping the operation of the supplying means when the bubble is sensed in the tube by the analyzing means,
Wherein the analyzing means senses the flow rate of the liquid / blood based on the slope value of the graph, and the controller controls the supply means based on the flow velocity value sensed by the analyzing means to adjust the flow rate Medical bubble detection notification system for safe fluid / blood injection.
The method according to claim 1,
Further comprising a light emission control unit for controlling the infrared light emission unit to emit infrared light in a pulse form having a specific period.
3. The method of claim 2,
Further comprising a moving means for adjusting a position of the infrared ray receiving portion. The medical bubble detection notification system for safe infusion / blood injection.
The method of claim 3,
The infrared light-
At least one first infrared light-receiving unit provided at a position opposite to the infrared light-emitting unit so that infrared rays emitted from the infrared light-emitting unit are received,
And at least one second infrared light-receiving unit installed at a predetermined angle from the first infrared-ray receiving unit so that the infrared-ray refracted and reflected by the tube is received.
The method according to claim 1,
Further comprising detachment means for detachably attaching the bubble detection device to the tube. ≪ Desc / Clms Page number 20 >
The method according to claim 1,
Further comprising communication means for transmitting a notification signal indicating presence / absence of bubbles determined by the analysis means to a preset user terminal.
A method for detecting and informing bubbles using a medical bubble detection notification system for safe fluid infusion / blood injection according to claim 1,
Mounting a medical bubble detecting device having an infrared ray emitting portion, an infrared ray receiving portion and analysis means on one side of the tube;
Injecting fluid or blood into the tube;
The infrared ray emitting unit irradiates infrared rays into the tube, the infrared ray receiving unit receives the infrared ray and measures the amount of light in real time;
Displaying the measurement data measured in the infrared light receiving unit in real time on the display unit;
The amount of light measured at the infrared light receiving portion is changed drastically when a meniscus of bubbles contained in the tube passes through the infrared light emitting portion;
When the analysis means determines that the meniscus of the bubbles passes through the tube and detects the presence or absence of bubbles in the tube when the slope value of the light amount graph according to the time displayed on the display unit exceeds a predetermined slope value ; And
And transmitting a notification signal when the notifying means has detected bubbles in the tube by the analyzing means. ≪ RTI ID = 0.0 > 18. < / RTI > delete delete delete delete delete delete delete delete delete
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CN107823754A (en) * 2017-11-27 2018-03-23 钱昱昭 One kind transfusion intelligent management system
CN108175909B (en) * 2018-01-29 2020-09-22 英华达（上海）科技有限公司 Ultrasonic bubble detection method and system
KR102024011B1 (en) * 2018-12-28 2019-09-24 주식회사 유니메딕스 Medicament delivery system
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JP2013094611A (en) 2011-11-07 2013-05-20 Seiko Epson Corp Droplet detecting device
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