WO2021196306A1

WO2021196306A1 - Visualized body temperature patch

Info

Publication number: WO2021196306A1
Application number: PCT/CN2020/085840
Authority: WO
Inventors: 文萍; 姚吉龙
Original assignee: 深圳市妇幼保健院
Priority date: 2020-04-01
Filing date: 2020-04-21
Publication date: 2021-10-07

Abstract

Disclosed is a visualized body temperature patch. The visible body temperature patch comprises a transparent surface layer (10), an adhesive bottom layer (30) and a color development middle layer (20). The adhesive bottom layer (30) is suitable for being bonded to the body surface of a measured person; and the color development middle layer (20) is arranged between the transparent surface layer (10) and the adhesive bottom layer (30), and the color development middle layer (20) comprises a heat conduction layer (201) and a thermosensitive color-changing layer (202), the heat conduction layer (201) being used for absorbing heat of the body surface of a human body, and the thermosensitive color-changing layer (202) being located above the heat conduction layer (201) and used for sensing the temperature of the heat conduction layer (201) to change colors. The visualized body temperature patch can be attached to the body surface, such as the forehead part, of the measured person, the thermochromic principle of a thermosensitive color-changing material is used for displaying the temperature by means of colors, and compared with a traditional thermometer or temperature-measuring gun, the visible body temperature patch can greatly improve efficiency, prevent people from clustering during group temperature measurement, and reduce the risk of infection clustering, and since the visualized body temperature patch is kept at the forehead part, the body temperature of the measured person can be obtained at any time, without carrying out frequent measurement, such that labor costs and time costs are significantly reduced, and in addition, the visualized body temperature patch is low in price and convenient to popularize and use.

Description

Visual body temperature sticker

Technical field

The invention relates to the technical field of body temperature detection equipment, in particular to a visual body temperature sticker.

Background technique

Body temperature measurement, as one of the most commonly used health testing methods, is widely used in various places, such as hospitals, homes, and public places. Under normal circumstances, body temperature can be measured with thermometers, thermometers and other measuring equipment.

However, in some special cases, the use of thermometers and thermometers to measure body temperature still has some insurmountable shortcomings. For example, in some outbreaks of infectious diseases, such as the outbreak of new coronavirus pneumonia since January 2020, it is a A highly contagious disease, it is easy to cause mass infection, and one of the obvious symptoms of the disease is fever. Therefore, one of the prevention and screening methods of the disease is body temperature measurement.

During the outbreak of this kind of infectious disease, in order to prevent cross-infection, people need to take body temperature measurement when entering various public places (such as office buildings, communities, shopping malls, hospitals, etc.). Moreover, because of the frequent movement of people and rapid changes in body temperature, , Need to measure body temperature frequently. Obviously, the use of traditional thermometers and thermometers to measure body temperature in such public places has low efficiency, and is likely to cause gathering of people and increase the risk of infection. In addition, frequent measurement requires a lot of labor and time costs.

Summary of the invention

The present invention aims to solve one of the technical problems in the related art at least to a certain extent. For this reason, the purpose of the present invention is to provide a visual body temperature patch.

In order to achieve the foregoing objective, the visual body temperature sticker according to an embodiment of the present invention includes:

Transparent surface layer

Adhesive bottom layer, which is suitable for sticking to the body surface of the subject;

A color-developing intermediate layer, the color-developing intermediate layer is arranged between the transparent surface layer and the adhesive bottom layer, the color-developing intermediate layer includes a thermally conductive layer and a thermosensitive color changing layer, and the thermally conductive layer is used to absorb the human body Heat from the body surface, the thermosensitive color changing layer is located above the heat conductive layer, and is used to sense the temperature of the heat conductive layer to change color.

The visual body temperature sticker provided by the embodiment of the present invention can be affixed to the body surface of a subject, for example, on the forehead. Using the thermochromic principle of the thermochromic material, the temperature can be displayed by color. In use, the subject can keep the visual body temperature patch pasted on the forehead. In this way, when entering and leaving public places, the administrator can obtain the subject’s body temperature by observing the visual body temperature patch, instead of using it. The on-site measurement with a clinical thermometer or a thermometer can greatly improve efficiency, prevent people from gathering, and reduce the risk of cluster infection. Moreover, since the visual temperature patch is kept on the forehead, the temperature of the subject can be known at any time , No frequent measurement is required, labor cost and time cost are greatly reduced, in addition, its low price is easy to promote and use.

In addition, the visual body temperature patch according to the foregoing embodiment of the present invention may also have the following additional technical features:

According to an embodiment of the present invention, the thermosensitive color changing layer includes a plurality of thermosensitive color changing patches, and the plurality of thermosensitive color changing patches are sequentially pasted on the heat conductive layer along the predetermined direction, and each of the The discoloration temperature of the thermal discoloration patch is different.

According to an embodiment of the present invention, the color changing temperature of the plurality of the thermosensitive color changing patches increases sequentially along the predetermined direction.

According to an embodiment of the present invention, the color change temperature of the thermosensitive color changing patch is between 35°C and 40°C.

According to an embodiment of the present invention, the thermally conductive layer is a graphene material or a nano-carbon material.

According to an embodiment of the present invention, the transparent surface layer includes a visible window area and a non-visible ink area, and the visible window is opposite to the thermochromic layer to see through the color change of the thermochromic layer The non-visible ink area is formed by coating ink outside the visible window area.

According to an embodiment of the present invention, the visible window area includes a plurality of visible windows, and the plurality of visible windows correspond to a plurality of the thermosensitive color-changing patches in a one-to-one manner;

The non-visible ink area is provided with a plurality of temperature indication marks corresponding to the plurality of the visible windows one-to-one.

According to an embodiment of the present invention, the thermosensitive color change layer is a reversible thermochromic material.

According to an embodiment of the present invention, the visual body temperature patch is suitable for being pasted on the forehead of the subject.

The additional aspects and advantages of the present invention will be partly given in the following description, and partly will become obvious from the following description, or be understood through the practice of the present invention.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, without creative work, other drawings can be obtained based on the structure shown in these drawings.

FIG. 1 is a schematic structural diagram of a visual body temperature patch according to an embodiment of the present invention;

Figure 2 is an exploded view of the visual body temperature patch according to an embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a visual body temperature patch according to another embodiment of the present invention.

Reference signs:

Transparent surface layer 10;

Visual window area 101;

Visual window 101a;

Invisible ink area 102;

Chromogenic intermediate layer 20;

Thermally conductive layer 201;

Thermochromic layer 202;

Thermosensitive patch 202a;

Adhesive bottom layer 30;

Release paper layer 31.

The realization of the objectives, functional characteristics and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention, but should not be understood as a limitation of the present invention. Based on the embodiments of the present invention, those of ordinary skill in the art have not made any creative labor prerequisites. All other embodiments obtained below belong to the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", " The orientation or positional relationship indicated by "circumferential", "radial", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must be It has a specific orientation, is constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more than two, unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. , Or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the present invention can be understood according to specific situations.

In the present invention, unless expressly stipulated and defined otherwise, the "above" or "below" of the first feature of the second feature may include direct contact between the first and second features, or may include the first and second features Not in direct contact but through other features between them. Moreover, the "above", "above" and "above" of the first feature on the second feature include the first feature directly above and obliquely above the second feature, or it simply means that the first feature is higher in level than the second feature. The “below”, “below” and “below” of the second feature of the first feature include the first feature directly below and obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.

Hereinafter, the visual body temperature patch according to the embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIGS. 1 to 2, the visual body temperature patch provided according to an embodiment of the present invention includes a transparent surface layer 10, an adhesive bottom layer 30 and a color-developing middle layer 20.

Specifically, the transparent surface layer 10 may be a transparent film or a transparent sheet, and may be made of transparent plastic, with a thickness of 0.1 to 1 mm.

The adhesive bottom layer 30 is suitable for sticking to the body surface of the test subject, that is, during use, the visible body temperature sticker can be pasted on the body surface of the test subject by using the adhesive bottom layer.

The color-developing intermediate layer 20 is arranged between the transparent surface layer 10 and the adhesive bottom layer 30. The color-developing intermediate layer 20 includes a thermally conductive layer 201 and a thermosensitive color changing layer 202. The thermally conductive layer 201 is used to absorb the human body. Heat of the body surface, the thermosensitive color changing layer 202 is located above the heat conductive layer 201, and is used to sense the temperature of the heat conductive layer 201 to change color.

In other words, the color-developing intermediate layer 20 is mainly composed of a thermally conductive layer 201 and a thermosensitive color changing layer 202. The thermally conductive layer 201 is located on the adhesive bottom layer 30, and the thermosensitive color changing layer 202 is provided on the thermally conductive layer 201. The thermosensitive color changing layer 202 It is made of thermochromic material. The thermochromic material has thermochromic properties, that is, it absorbs the spectrum and changes color when heated or cooled. When the visual body temperature sticker is attached to the body surface of the examinee, the thermally conductive layer 201 can absorb the heat of the examinee, and the thermochromic layer 202 is provided on the thermally conductive layer 201, so the thermally conductive layer 201 can conduct heat To the thermochromic layer 202, the thermochromic layer 202 produces a color change after being heated. For example, when the temperature of the thermochromic layer 202 reaches a predetermined temperature, the thermochromic layer 202 changes from one color to another color, for example, from The white color changes to black or red. In this way, the body temperature of the subject can be known by observing the color of the thermochromic layer 202.

It should be noted that the inventor found through research that although thermochromic materials can sense temperature and produce color changes, when the thermochromic materials are directly applied to the human body, the sensitivity of the thermochromic materials to temperature perception is not ideal. It is difficult to accurately and reliably reflect changes in body temperature. By providing a thermally conductive layer 201 at the bottom of the thermochromic layer 202, the thermal conductivity of the thermally conductive layer 201 can be used to quickly conduct heat from the surface of the subject to the thermochromic layer 202, thereby enabling the thermochromic layer 202 to be able to The color changes according to the temperature change of the examinee, which accurately and reliably reflects the body temperature of the examinee.

Preferably, the thermally conductive layer 201 can be made of graphene or nano-carbon material. The graphene-based nano-carbon has a higher thermal conductivity and good thermal conductivity. The inventor found through experiments that it was used as the thermally conductive layer 201 to be placed on the adhesive bottom layer. Between 30 and the thermochromic layer 202, rapid heat conduction can be realized, so that the thermochromic layer 202 is quickly heated and produces accurate, stable and reliable color changes, thereby achieving the effect of body temperature indication.

In addition, the thermochromic layer 202 preferably uses a reversible thermochromic material. The reversible thermochromic material means that after its temperature exceeds a predetermined temperature (color change temperature), it changes from one color to another. When the temperature drops to The color can be restored to the original color after the discoloration temperature is below. Since body temperature changes dynamically, it may increase in a period of time (for example, when fever), and may decrease in another period of time (for example, when fever is reduced). Therefore, the use of reversible thermochromic materials can follow As the body temperature drops, the reversible thermochromic material can restore the original color, so that the current body temperature state of the subject can be displayed more accurately and reliably.

Reversible thermochromic materials generally include inorganic reversible thermochromic materials, organic reversible thermochromic materials and liquid crystal reversible thermochromic materials. Inorganic reversible thermochromic materials generally include metals and their oxides, metal complexes, vanadates, complex salts and tungstates. Organic reversible thermochromic materials generally include spiro rings, polyaromatic rings containing CH=CH, Schiff bases, and triphenylmethanes. Liquid crystal reversible thermochromic materials generally include smectic liquid crystals, nematic liquid crystals, and brain steroid liquid crystals. According to the inventor’s further research, it is found that the temperature range of the inorganic reversible thermochromic material and the organic reversible thermochromic material is narrow, and the temperature display accuracy is not high, while the liquid crystal reversible thermochromic material has high color sensitivity and can be used in a wide range. The temperature zone changes, and the light resistance stability is good. Therefore, it is preferable to use a liquid crystal reversible thermochromic material as the thermochromic layer 202 in the present invention, so that the visual body temperature sticker can display more accurately and stably The body temperature of the subject, and the temperature accuracy is high.

It is understandable that a release paper layer 31 can be attached to the bottom of the adhesive bottom layer 30. When in use, the release paper layer 31 can be peeled off and torn off, and then the adhesive bottom layer 30 can be pasted on the face of the subject. That's it.

In some embodiments of the present invention, the thermosensitive color changing layer 202 includes a plurality of thermosensitive color changing patches 202a, and the plurality of thermosensitive color changing patches 202a are sequentially pasted on the thermally conductive layer 201 along the predetermined direction. The color changing temperature of each of the thermosensitive color changing patches 202a is different. For example, in the example of FIG. 1, there are five thermosensitive color-changing patches 202 a, and five thermo-sensitive color-changing patches 202 a are arranged on the thermally conductive layer 201 at intervals along the length direction of the thermally conductive layer 201.

In other words, the thermochromic layer 202 includes a plurality of thermochromic patches 202a, and the color change temperatures of these thermochromic patches 202a are all different. When the thermally conductive layer 201 conducts heat to these thermochromic patches 202a, if When the temperature reaches the color change temperature of a certain thermochromic patch 202a, the color of the thermochromic patch 202a changes, and the other thermochromic patch 202a keeps the color unchanged because the temperature has not reached the color change temperature. In this way, The current body temperature of the subject can be obtained through the thermosensitive color-changing patch 202a whose color changes.

In other words, since the color change temperatures of the multiple thermochromic patches 202a are different, the multiple thermochromic patches 202a can be used to indicate different temperatures, so that a wider range of body temperature data can be measured.

Advantageously, the discoloration temperature of the plurality of thermosensitive color-changing patches 202a increases in sequence along the predetermined direction. More advantageously, the color-changing temperature of the thermosensitive color-changing patch 202a is between 35°C and 40°C. For example, the discoloration temperatures of the five thermochromic patches 202a are 36°C, 37°C, 38°C, 39°C, and 40°C, respectively. In this way, when the subject's body temperature gradually rises, each thermochromic patch can be made 202a changes colors sequentially, and then displays the temperature change from low to high, thereby facilitating more intuitively knowing the body temperature of the subject, and the user experience is better.

It is understandable that the number of thermosensitive color-changing patches and the configuration of the color-changing temperature can be configured according to the temperature measurement requirements and some critical temperature in medicine. For example, in medicine, when the body temperature reaches 38.5°C, a forced cooling method is required to cool down. Therefore, a thermochromic patch can be configured to have a color change temperature of 38.5°C (as shown in Figure 3). In this way, the thermochromic patch can detect whether the subject's body temperature reaches 38.5°C, which is beneficial to medicine. The critical temperature detection.

1 to 2, in an embodiment of the present invention, the transparent surface layer 10 includes a visible window area 101 and a non-visible ink area 102, the visible window 101a and the thermochromic layer 202 In contrast, to see through the color change of the thermosensitive color changing layer 202, the non-visible ink area 102 is formed by coating ink outside the visible window area 101.

That is to say, in this embodiment, a visible window area 101 is reserved on the top or bottom surface of the transparent surface layer 10, and the non-visible ink area 102 is formed by ink printing in other areas other than the visible window area 101. Since the transparent surface layer 10 is made of transparent material, the visible window area 101 can see through the thermochromic layer 202 below it, so that when the thermochromic layer 202 changes color, it can pass through the visible window area 101 Intuitively know the temperature of the subject.

Advantageously, the visible window area 101 includes a plurality of visible windows 101a, and the plurality of visible windows 101a correspond to the plurality of thermochromic patches 202a in a one-to-one correspondence. The non-visible ink area 102 is provided with a plurality of temperature indication marks corresponding to the plurality of the visible windows 101a one-to-one.

In other words, a visible window 101a is provided above each thermochromic patch 202a, through which the color change of the thermochromic patch 202a below it can be seen through. In addition, one side of each visible window 101a is provided with a temperature indication mark corresponding to the discoloration temperature of the thermochromic patch 202a, such as 36, 37, 38, 39, 40, so that in a certain visible window 101a When the color inside changes, the current body temperature value of the testee can be accurately obtained through the temperature indication mark on its side, which is intuitive and convenient.

It is understandable that the visual body temperature patch is suitable for being pasted on the forehead of the subject, that is, the department body temperature patch is set to a size and shape that can be attached to the forehead, and it is placed on the forehead to measure the temperature accurately. Moreover, it is convenient to observe and know the temperature. Of course, the visual body temperature sticker can also be configured to be suitable for sticking to other body surface positions of the subject according to needs.

In the description of this specification, descriptions with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean specific features described in conjunction with the embodiment or example , Structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples and the features of the different embodiments or examples described in this specification without contradicting each other.

The above descriptions are only the preferred embodiments of the present invention, and do not limit the scope of the present invention. Under the inventive concept of the present invention, equivalent structural transformations made by using the contents of the description and drawings of the present invention, or direct/indirect use Other related technical fields are included in the scope of patent protection of the present invention.

Claims

A visual body temperature sticker, which is characterized in that it comprises:

Transparent surface layer

Adhesive bottom layer, which is suitable for sticking to the body surface of the subject;

A color-developing intermediate layer, the color-developing intermediate layer is arranged between the transparent surface layer and the adhesive bottom layer, the color-developing intermediate layer includes a thermally conductive layer and a thermosensitive color changing layer, and the thermally conductive layer is used to absorb the human body Heat from the body surface, the thermosensitive color changing layer is located above the heat conductive layer, and is used to sense the temperature of the heat conductive layer to change color.
The visual body temperature sticker according to claim 1, wherein the heat-sensitive color changing layer comprises a plurality of heat-sensitive color changing patches, and the plurality of heat-sensitive color changing patches are sequentially pasted along the predetermined direction on the On the heat-conducting layer, the color change temperature of each thermosensitive color changing patch is different.
The visual body temperature patch according to claim 2, wherein the color change temperature of the plurality of thermosensitive color change patches increases in sequence along the predetermined direction.
The visual body temperature patch according to claim 2, wherein the color change temperature of the thermosensitive color changing patch is between 35°C and 40°C.
The visual body temperature patch according to claim 1, wherein the thermally conductive layer is made of graphene material or nano-carbon material.
The visual body temperature sticker according to claim 1, wherein the transparent surface layer includes a visible window area and a non-visible ink area, and the visible window is opposite to the thermochromic layer to see through According to the color change of the thermosensitive color changing layer, the non-visible ink area is formed by coating ink outside the visible window area.
The visual body temperature sticker according to claim 6, wherein the visual window area comprises a plurality of visual windows, and the plurality of visual windows correspond to a plurality of the thermosensitive color-changing patches in a one-to-one manner;

The non-visible ink area is provided with a plurality of temperature indication marks corresponding to the plurality of the visible windows one-to-one.
The visual body temperature patch according to claim 1, wherein the thermosensitive color changing layer is a reversible thermosensitive color changing material.
The visual body temperature patch according to any one of claims 1 to 8, wherein the visual body temperature patch is suitable for being pasted on the forehead of a subject.