KR102031131B1 - Apparatus for detecting hypodemic vein using near infrared optical system - Google Patents

Abstract

A blood vessel detection device is disclosed. The apparatus includes a display unit, a light emitting unit for emitting near infrared rays having a wavelength of any one of 780 or 850 nanometers to a subject, a filter unit for passing only light corresponding to the emitted wavelength among light reflected from the subject, and a filter unit. And a controller which photographs a subject according to the light that is passed and generates an image, and a controller which displays the generated image through a display unit.

Description

Vessel detection device using near infrared optical system {APPARATUS FOR DETECTING HYPODEMIC VEIN USING NEAR INFRARED OPTICAL SYSTEM}

The present invention relates to an apparatus for detecting blood vessels using a near infrared optical system and a method of controlling the same. More particularly, the apparatus for detecting blood vessels using a near infrared optical system for detecting blood vessels using an image of a subject acquired by light of a specific wavelength and its control method It is about a method.

Intravenous injection in a hospital is a field that requires skill so that it can be performed only by a professional nurse hired separately. However, in the situation where nurses continue to be socially short, securing an experienced nurse for intravenous injection is becoming increasingly difficult.

In addition, it is determined whether the intravenous injection is successful by inserting the catheter into the vein. If the syringe is not injected into the vein correctly, only a small amount of venous blood flows out, so it is not known whether the procedure is successful. Since the catheter used once must be thrown out obligatoryly, as the procedure is repeated, the effort and cost for intravenous injection is inevitably consumed.

In addition, it is difficult to find veins in infants, the elderly, or patients with dark skin, and thus, a need for accurate intravenous injection has emerged.
(Patent Document 1) KR10-0823886 B1

The present invention is directed to the above-described needs, and an object of the present invention is to provide a blood vessel detection apparatus using a near-infrared optical system for visualizing blood vessels, especially veins, by irradiating the skin with light of a specific wavelength, and a control method thereof.

In order to achieve the above object, the blood vessel detection device according to an embodiment of the present invention is a display unit, a light emitting to the subject, which is a skin containing a near-infrared blood vessel having a wavelength of any one of 780 or 850 nanometers, including the blood vessels A light emitting unit, a filter unit for passing only the light corresponding to the emitted wavelength of light reflected from the subject, a photographing unit for photographing the subject according to the light passed from the filter unit to generate an image, and displays the generated image on the display unit A light emitting unit for emitting near-infrared light having a wavelength of 780 nanometers to the subject; And a second light emitting part that emits near-infrared light having a wavelength of 850 nanometers to the subject, wherein the controller selectively drives the first and second light emitting parts, respectively, and obtains the first light by the selective driving. And sequentially displaying a second image on the display unit, wherein the first and second images may include only a blood vessel and a silhouette of the subject including the same.

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The filter unit may include a first filter unit configured to pass only light corresponding to a wavelength of 780 nanometers of light reflected from the subject, and a second filter unit configured to pass only light corresponding to a wavelength of 850 nanometers of light reflected from the subject. The controller may drive one of the first and second filter units in response to any one of the first and second light emitting units.

The display may be a projector, and the controller may display the generated image on a subject.

In addition, the controller may display an image corresponding to the blood vessel on the skin to match the subcutaneous blood vessel.

In addition, the controller may adjust the magnification of the image corresponding to the blood vessel so as to match the subcutaneous blood vessel and display the same on the skin.

The controller may display an image corresponding to a blood vessel in a first color, and display an image corresponding to the blood vessel in a second color that is a complementary color with respect to the first color.

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According to at least one of the embodiments of the present invention, since the visualization of blood vessels, especially veins is made clearly by irradiating the skin with light of a specific wavelength, there is an effect that the success rate of injection into the blood vessels is improved.

Further scope of the applicability of the present invention will become apparent from the following detailed description. However, various changes and modifications within the spirit and scope of the present invention can be clearly understood by those skilled in the art, and therefore, specific embodiments, such as the detailed description and the preferred embodiments of the present invention, should be understood to be given by way of example only.

1 is an example of a block diagram relating to a blood vessel detection apparatus according to the present invention,
2 is an example of a flowchart relating to a control method of a blood vessel detecting apparatus according to the present invention;
3 to 4 are diagrams for explaining the visualization of blood vessels according to near infrared rays of various wavelengths,
5 is an example of an image displayed by the blood vessel detecting apparatus according to the present invention;
6 is an example of a block diagram of an injection device according to the present invention;
7 is an example of a flowchart of a control method of an injection device according to the present invention;
8 is an example of a perspective view of an injection device according to the present invention.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings, and the same or similar components are denoted by the same reference numerals regardless of the reference numerals, and redundant description thereof will be omitted. The suffixes "module" and "unit" for components used in the following description are given or used in consideration of ease of specification, and do not have distinct meanings or roles from each other. In addition, in describing the embodiments disclosed herein, when it is determined that the detailed description of the related known technology may obscure the gist of the embodiments disclosed herein, the detailed description thereof will be omitted. In addition, the accompanying drawings are intended to facilitate understanding of the embodiments disclosed herein, but are not limited to the technical spirit disclosed herein by the accompanying drawings, all changes included in the spirit and scope of the present invention. It should be understood to include equivalents and substitutes.

Terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

When a component is said to be "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that another component may be present in the middle. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

Singular expressions include plural expressions unless the context clearly indicates otherwise.

The terms "comprise" or "having" in the present application are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and that one or more other features It should be understood that it does not exclude in advance the possibility of the presence or addition of numbers, steps, operations, components, parts or combinations thereof.

Although there is no corresponding code in a specific drawing described in the present application, if there is a corresponding sign in the drawings described before, it can be described by marking it.

1 is an example of a block diagram of a blood vessel detection apparatus according to the present invention. Referring to FIG. 1, the blood vessel detecting apparatus 100 includes a light emitting unit 110, a filter unit 120, a photographing unit 130, a controller 140, and a display unit 150.

The light emitter 110 is a component for radiating light to irradiate a subject located in a specific direction. The light emitting unit 110 may be implemented as a light emitting device (LED), and light is emitted under the control of the controller 140. In particular, the light emitting unit 110 may be implemented as an LED emitting only a near infrared ray of a specific wavelength. The light emitting unit 110 may be formed in a plurality so as to correspond to each of the light of a plurality of wavelengths, and can be detached to the blood vessel detection apparatus 100 by the user's selection. Therefore, the controller 140 may drive only one selected from among the plurality of light emitting units, or sequentially select and drive one of the plurality of light emitting units.

The filter unit 120 passes only light corresponding to a specific wavelength or a specific wavelength band, and filters or blocks light corresponding to the other wavelength or wavelength band. For example, if light having a wavelength of 780 nanometers is irradiated to the subject from the light emitting unit 110, the filter unit 120 passes only the light having a wavelength of 780 nanometers of the light reflected from the subject, and then photographing unit 130. Can be provided as an image sensor. The filter unit 120 may be formed in plural to correspond to each of light of a plurality of wavelengths, and may be detachable from the blood vessel detecting apparatus 100 by a user's selection. Therefore, the controller 140 may drive only one selected from among the plurality of filter units, and selectively display the input image according to the selected filter unit through the display unit 150. Alternatively, the controller 140 may sequentially select and drive one of the plurality of filter units, and sequentially display the input image according to the selected filter unit through the display unit 150.

The photographing unit 130 processes an image frame such as a still image or a moving image obtained by the image sensor. The processed image frame may be displayed on the display unit 150 or stored in a memory (not shown). Therefore, the photographing unit 130 may provide the control unit 140 to process an image of a specific wavelength provided from the filter unit 120.

The application program is stored in a memory (not shown) and may be driven to perform an operation of the blood vessel detection apparatus 100 under the control of the controller 140. The controller 140 controls the overall operation of the blood vessel detection apparatus 100 in addition to the operation related to the application program. The controller 140 processes signals, data, information, etc. input or output through various components, stores them in a memory (not shown), or displays them through the display unit 150, thereby providing information or functions appropriate to a user. Can be provided or processed. For example, the controller 140 may perform processing such as contrast control or image sharpening on the detected image using software such as an open cv program.

The display unit 150 displays information processed by the blood vessel detecting apparatus 100. The display unit 150 may display various visual information such as execution screen information of an application program, a user interface (UI), a graphic user interface (GUI) according to the execution screen information, and the like. The display unit 150 may be implemented as a general LCD display, or may be implemented in the form of a beam projector.

The display unit 150 may be implemented as a touch screen by forming a layer structure with the touch sensor or being integrally formed. The touch screen may serve as a user input unit that provides an input interface between the user and the blood vessel detecting apparatus 100, and may also provide an output interface between the user and the blood vessel detecting apparatus 100.

2 is an example of a flowchart of a control method of a blood vessel detecting apparatus according to the present invention.

First, the subject may be positioned to face the light emitting unit 110 and the imaging unit 130 of the blood vessel detection apparatus 100. In this case, the subject may be skin of a human body or an animal. The skin can include subcutaneous blood vessels.

Thereafter, the blood vessel detecting apparatus 100 may emit NIR light having a specific wavelength to the subject (S210). In more detail, the controller 140 may control the NIR to emit light through the light emitter 110 so that the NIR may be irradiated to the subject.

In this case, the near-infrared light emitted is preferably near-infrared light corresponding to any one of wavelengths of 780 or 850 nanometers. Referring to FIG. 3, which shows a graph showing the degree of absorption of blood according to the wavelength of light, the blood passing through the subcutaneous blood vessel shows an increase in the absorption rate of light at a wavelength of 780 or 850 nanometers. Therefore, in order to visualize only blood vessels by photographing skin, it is preferable to irradiate the skin with light corresponding to a wavelength of 780 or 850 nanometers.

In addition, the image input through the photographing unit 130 is preferably an image corresponding to any one of the wavelength of 780 or 850 nanometers. Therefore, the filter unit 120 that passes only the light corresponding to any one of the wavelength of 780 or 850 nanometer is formed on the front of the image sensor of the photographing unit 130, the filter unit 120 is emitted from the light reflected from the subject Only light corresponding to the wavelength emitted from the unit 110 may pass (S220).

Thereafter, the light passing through the filter unit 120 is input to the photographing unit 130, and the controller 140 generates an image according to the reflected light (S230). That is, the light input to the photographing unit 130 corresponds to one of wavelengths of 780 or 850 nanometers, and the controller 140 displays an image through the display unit 150 through image processing as described above. (S240). In this case, the display unit 150 may be displayed through a general LCD, and at the same time may be displayed through a beam projector.

Referring to FIG. 4, which shows an image showing the degree of detection of subcutaneous blood vessels according to the wavelength of light, it can be seen that the subcutaneous blood vessels are the clearest images at a wavelength of 850 nanometers compared to 730 or 940 nanometers. Therefore, the controller 140 may display only the silhouette of the blood vessel and the subject (ie, the human body including the skin) through the display unit 150.

In addition, the controller 140 may display the blood vessel in the first color, the remaining skin in the second color, and the first and second colors may be complementary colors. Therefore, the user can visually determine the location of blood vessels best.

Meanwhile, as described above, the display unit 150 may be implemented as a beam projector, and the beam projector may directly display a corresponding image on a subject, that is, a human body. FIG. 5 illustrates a case in which a beam projector displays an image through a human body, and a blood vessel image is matched with a blood vessel of a subject and displayed. In this case, the controller 140 may adjust the magnification or the irradiation position of the image so that the size or position of the actual vessel and the displayed vessel image are identically matched.

In the above, a method of visually amplifying and displaying blood vessels included in the photographed region by photographing a human body or the like has been described. Hereinafter, a description will be made of an injection device for performing injection (injection) to the blood vessel visualized using the blood vessel detection device as described above.

6 is an example of a block diagram of an injection apparatus according to the present invention.

Referring to FIG. 6, the scanning device 200 includes a light emitting unit 210, a filter unit 220, a photographing unit 230, a control unit 240, a display unit 250, and a scanning unit 260.

The light emitter 210 is a component for irradiating a subject located in a specific direction by emitting light. The light emitting unit 210 may be implemented as a light emitting device (LED), and light is emitted by the control of the controller 240. In particular, the light emitting unit 210 may be implemented as an LED emitting only a near infrared ray of a specific wavelength. The light emitting unit 210 may be formed in plural to correspond to each of the light of the plurality of wavelengths, and may be detachable from the scanning device 200 by the user's selection. Therefore, the controller 240 may drive only one selected from among the plurality of light emitting units, or may sequentially drive one of the plurality of light emitting units.

The filter unit 220 passes only light corresponding to a specific wavelength or a specific wavelength band, and filters or blocks light corresponding to the other wavelength or wavelength band. For example, if light having a wavelength of 780 nanometers is irradiated to the subject from the light emitting unit 210, the filter unit 220 passes only the light having a wavelength of 780 nanometers of the light reflected from the subject and the photographing unit 230. Can be provided as an image sensor. The filter unit 220 may be formed in plural to correspond to the light of the plurality of wavelengths, and may be detachable from the scanning device 200 by the user's selection. Accordingly, the controller 240 may drive only one selected from among the plurality of filter units, and selectively display the input image according to the selected filter unit through the display unit 250. Alternatively, the controller 240 may sequentially select and drive one of the plurality of filter units, and sequentially display the input image according to the selected filter unit through the display unit 250.

The photographing unit 230 processes an image frame such as a still image or a moving image obtained by the image sensor. The processed image frame may be displayed on the display 250 or stored in a memory (not shown). Therefore, the photographing unit 230 may provide the control unit 240 to process an image of a specific wavelength provided from the filter unit 220.

The application program may be stored in a memory (not shown) and may be driven to perform an operation of the injection apparatus 200 under the control of the controller 240. The controller 240 controls the overall operation of the injection device 200 in addition to the operation related to the application program. The controller 240 processes signals, data, information, etc. input or output through various components, stores them in a memory (not shown), or displays them on the display 250 to provide information or functions appropriate to a user. Can be provided or processed. For example, the controller 240 may perform processing such as contrast control or image sharpening on the detected image using software such as an open cv program.

In addition, the control unit 240 may control the injection unit 260 according to the processed image to control the injection to the blood vessel included in the skin, which is the subject, which is described in detail with reference to FIGS. 7 to 8. Do it.

The display unit 250 displays information processed by the injection apparatus 200. The display unit 250 may display various visual information such as execution screen information of an application program, a user interface (UI), a graphic user interface (GUI) according to the execution screen information, and the like. The display unit 250 may be implemented as a general LCD display, or may be implemented in the form of a beam projector.

On the other hand, the display unit 250 may be implemented as a touch screen by forming a layer structure or integrally with the touch sensor. The touch screen may serve as a user input unit that provides an input interface between the user and the injection apparatus 200, and may also provide an output interface between the user and the injection apparatus 200.

The scanning unit 260 is a component that scans blood vessels of a human body as a subject, which will be described in detail with reference to FIG. 8.

7 is an example of a flowchart of a control method of an injection device according to the present invention.

First, the subject may be positioned to face the light emitting unit 210 and the photographing unit 230 of the scanning device 200. In this case, the subject may be skin of a human body or an animal. The skin can include subcutaneous blood vessels.

Thereafter, the scanning device 200 may emit near infrared rays of a specific wavelength with respect to the subject (S710). In detail, the controller 240 may control the NIR to emit light through the light emitter 210 so that the NIR may be irradiated to the subject.

In this case, the near-infrared light emitted is preferably near-infrared light corresponding to any one of wavelengths of 780 or 850 nanometers. Referring to FIG. 3, which shows a graph showing the degree of absorption of blood according to the wavelength of light, the blood passing through the subcutaneous blood vessel shows an increase in the absorption rate of light at a wavelength of 780 or 850 nanometers. Therefore, in order to visualize only blood vessels by photographing skin, it is preferable to irradiate the skin with light corresponding to a wavelength of 780 or 850 nanometers.

In addition, the image input through the photographing unit 230 is preferably an image corresponding to any one of the wavelength of 780 or 850 nanometers. Accordingly, a filter unit 220 for passing only light corresponding to any one of wavelengths of 780 or 850 nanometers is formed in front of the image sensor of the photographing unit 230, and the filter unit 220 emits light among light reflected from a subject. Only light corresponding to the wavelength emitted from the unit 210 may be passed (S720).

Thereafter, the light passing through the filter unit 220 is input to the photographing unit 230, and the controller 240 generates an image according to the reflected light (S730). That is, the light input to the photographing unit 230 corresponds to one of wavelengths of 780 or 850 nanometers, and the controller 240 displays an image through the display unit 250 through image processing as described above. (S740). In this case, the display unit 250 may be displayed through a general LCD, and at the same time may be displayed through a beam projector.

Referring to FIG. 4, which shows an image showing the degree of detection of subcutaneous blood vessels according to the wavelength of light, it can be seen that the subcutaneous blood vessels are the clearest images at a wavelength of 850 nanometers compared to 730 or 940 nanometers. Therefore, the controller 240 may display only the silhouette of the blood vessel and the subject (ie, the human body including the skin) through the display 250.

In addition, the control unit 240 may display the blood vessel in the first color, the remaining skin in the second color, and the first and second colors may be complementary colors. Therefore, the user can visually determine the location of blood vessels best.

Meanwhile, as described above, the display unit 250 may be implemented as a beam projector, and the beam projector may directly display a corresponding image on a subject, that is, a human body. FIG. 5 illustrates a case in which a beam projector displays an image through a human body, and a blood vessel image is matched with a blood vessel of a subject and displayed. In this case, the controller 240 may adjust the magnification or the irradiation position of the image such that the size or position of the actual blood vessel and the displayed blood vessel image are equally matched.

Thereafter, the controller 240 may input a subject to be scanned by the scan unit 260, that is, a spot on the skin (S750). The injection point can be set by touching a specific point of blood vessel among images displayed on the touch screen, and pointing by various tools to a specific point of blood vessel image irradiated on the skin by the beam projector. This may be set by this.

Thereafter, the controller 240 may set coordinates corresponding to the scan point set as described above (S760). In detail, the controller 240 may coordinate the photographing area of the subject, that is, the skin. In addition, the controller 240 may coordinate the position of a touch point made on the touch screen or coordinate the position of a specific point of the blood vessel image radiated onto the skin by a beam projector based on the coordinated photographing area. . That is, the scan point set by the user as the scan point may be digitized to a position to be scanned by the scan unit 260. Since the specific scheme of such coordinates is well known, a detailed description thereof will be omitted.

Therefore, the controller 240 may control the scanning unit 260 to be scanned according to the photographing area of the coordinated subject and the scanning point set based thereon (S770). A detailed form and method of the scanning unit 260 scanned for the set scanning point will be described in detail with reference to FIG. 8.

8 is an example of a perspective view of an injection device according to the present invention. Hereinafter, descriptions of parts overlapping with the above description will be omitted.

The support plate 290 supports the injection apparatus 200, and is a component for installing each component, and allows a subject to be photographed and scanned, that is, a part of the human body (for example, a forearm) to be seated. Configuration (not shown).

The pillar 270 is formed and fixed on the support plate 290, and a main body including a light emitting unit 210, a filter unit 230, and a photographing unit 250 may be formed on the pillar 270. . In addition, at least one surface of the pillar 270 in the vertical direction is formed with a vertical rail (R1), the moving plate 280 may move in the vertical direction along the vertical rail (R1). That is, the moving plate 280 may move up and down under the control of the control unit 240 so that the scanning unit 260 may move up and down to the position set as the scanning point.

The scanning unit 260 is formed on one surface of the moving plate 280, and a horizontal rail R2 is formed on at least one surface of the moving plate 280 in the left and right directions. The scan unit 260 may move in the left and right directions along the horizontal rail R2. That is, the scanning unit 240 may move left and right under the control of the control unit 240 so that the scanning unit 260 may move left and right to the position set as the scanning point.

The injection unit 260 includes a fixture 261 and a syringe 262. The syringe 262 includes a hollow cylindrical cylinder and a piston inserted to slide along the inside of the cylinder, and may refer to a generally known form of a medical syringe. The fastener 261 is equipped with a syringe, and moves the syringe with respect to the injection direction, that is, the front-rear direction by the control of the control unit 240, and is located on the horizontal rail (R2) to the left and right directions by the control of the control unit 240 Can be moved.

In this manner, the syringe 262 moves in the vertical direction, the left and right directions, and the front and rear directions, so that the injection can be performed at the position set as the injection point.

The above detailed description should not be construed as limiting in all respects but should be considered as illustrative. The scope of the invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the invention are included in the scope of the invention.

100: blood vessel detection device 110: light emitting unit
120: filter unit 130: the imaging unit
140: control unit 150: display unit
200: scanning device 210: light emitting portion
220: filter unit 230: photographing unit
240: control unit 250: display unit
260: injection unit

Claims (10)

A display unit; A light emitting part for emitting a near infrared ray having a wavelength of any one of 780 or 850 nanometers to a subject, which is skin including subcutaneous blood vessels; A filter unit configured to pass only light corresponding to the emitted wavelength among light reflected from the subject; A photographing unit which photographs the subject and generates an image according to the light passed from the filter unit; And a controller configured to display the generated image through the display unit.
The light emitting unit
A first light emitting part which emits near infrared rays having a wavelength of 780 nanometers to the subject; And
A second light emitting part which emits near infrared rays having a wavelength of 850 nanometers with respect to the subject,
The control unit
Selectively driving the first and second light emitting units, respectively, and sequentially displaying the first and second images acquired by the selective driving through the display unit;
The first and second images are blood vessel detection apparatus using a near-infrared optical system, characterized in that the image containing only the blood vessel and the silhouette of the subject including the same. delete delete delete The method of claim 1,
The filter unit
A first filter unit configured to pass only light corresponding to a wavelength of 780 nanometers of light reflected from the subject; And
A second filter unit configured to pass only light corresponding to a wavelength of 850 nanometers of light reflected from the subject;
The control unit
The blood vessel detection apparatus using the near infrared optical system, characterized in that for driving any one of the first and second filter unit in response to any one of the first and second light emitting unit. The method of claim 1,
The display unit is a projector,
The control unit
The blood vessel detection apparatus using the near infrared optical system, characterized in that for displaying the generated image on the subject. The method of claim 6,
The control unit
An apparatus for detecting blood vessels using a near-infrared optical system, wherein the image corresponding to the blood vessels is displayed on the skin to match the subcutaneous blood vessels. The method of claim 7, wherein
The control unit
The apparatus for detecting blood vessels using a near-infrared optical system, wherein the magnification of the image corresponding to the blood vessels is adjusted to be displayed on the skin so as to match the subcutaneous blood vessels. The method of claim 6,
The control unit
An image corresponding to the blood vessel is displayed in a first color, and an image corresponding to the blood vessel is displayed in a second color that is complementary to the first color (complementary color). . delete

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