KR20230072262A - Affected condition monitoring device, and dressing for condition monitoring comprising the same - Google Patents

Abstract

One embodiment of the present invention, a semi-permeable membrane, one side of which is in contact with the affected area and can transmit exudate generated from the affected area; a pH detection layer positioned on the semi-permeable membrane and displaying different colors according to the pH of the exudate; an optical detection layer located on the pH detection layer and detecting a color change signal and converting it into an electrical signal; a light source layer positioned on the light detection layer; and an IC module located on the light source layer and connected to the optical detection layer to sense an electrical signal, which is located between the semi-permeable membrane and the pH detection layer and reflects light incident on the optical detection layer. It provides a wound condition monitoring device characterized in that it further comprises; a reflective layer that increases the color change signal.
The affected part condition monitoring device enables intuitive identification of the condition of the affected part through color change, and precise diagnosis can be made by quantifying electrical signals.
In addition, since it is integrally formed, the structure is simple and the possibility of miniaturization is high.

Description

Wound condition monitoring device and wound condition monitoring dressing including the same {AFFECTED CONDITION MONITORING DEVICE, AND DRESSING FOR CONDITION MONITORING COMPRISING THE SAME}

The present invention relates to a device for monitoring the condition of an affected area and a dressing for monitoring the condition of the affected area including the same, and more particularly, to a device for measuring pH from exudate generated in the affected area and detecting it with an optical signal and an electrical signal, and comprising the same It's about dressing.

When a defect such as a wound occurs in the skin, our body tends to defend the defect and self-heal. At this time, a wound dressing is used as an auxiliary material for effectively healing the defect and increasing the healing speed.

Since a general dressing forms a form surrounding the affected area, in order to determine the condition of the affected area, the condition of the affected area can be determined only by removing the dressing and visually identifying or taking a sample.

Removing the dressing to check the condition of the affected area is a necessary action, but there are several problems. Healing of the affected area proceeds more efficiently in a moist environment where substances involved in healing such as leukocytes and macrophages contained in the exudate can smoothly perform their role than in a dry environment.

Therefore, drying the affected area by repeated removal of the dressing is negative for the healing of the affected area, and there is also a concern that the adhesive material of the dressing may damage the affected area or sensitive skin around the affected area when the dressing is removed.

Therefore, attempts have been made to quickly and accurately diagnose the condition of the affected area while minimizing the removal of the dressing.

For example, Republic of Korea Patent Publication No. 10-2014-0044906 (name: wound dressing and treatment method) is an absorbent layer for absorbing exudate generated from the affected area; A wound dressing comprising an area allowing observation of the absorbent layer is configured to enable indirect confirmation of the condition of the affected area, and another configuration includes an indicator indicating the time to replace the dressing to provide a suitable time for dressing replacement and repetitive It has the effect of preventing damage caused by phosphorus dressing removal.

However, the above prior literature has a limitation in that only an approximate state can be checked in terms of identifying the state of the affected part through the absorbent layer, and the demand for precise diagnosis or rapid diagnosis has not been resolved.

Therefore, there is still an urgent need to develop a technology capable of quickly and accurately diagnosing the condition of the affected area while faithfully performing the basic function of the dressing to protect the affected area from the outside by wrapping the affected area.

Republic of Korea Patent Publication No. 10-2014-0044906

An object of the present invention for solving the above problems is to attach to the affected area to protect the affected area from the outside, and to quickly check the overall degree of infection or healing of the affected area with the naked eye through intuitive color change. It is to provide a monitoring device and dressing.

Another object of the present invention is to provide an apparatus and a dressing for monitoring the condition of an affected part, which enables precise diagnosis by converting a color change that intuitively and quickly indicates the condition of the affected part into an electrical signal.

Another object of the present invention is to provide a dressing and a device for monitoring the condition of an affected area with high reliability and accuracy by further improving a configuration for expressing the pH of exudate as a color change and a configuration for converting the color change into an electrical signal.

The technical problem to be achieved by the present invention is not limited to the above-mentioned technical problem, and other technical problems not mentioned can be clearly understood by those skilled in the art from the description below. There will be.

In one embodiment of the present invention for achieving the above technical problem, an apparatus for monitoring the condition of an affected area includes a semi-permeable membrane having one surface in contact with the affected area and allowing exudate generated from the affected area to pass through; a pH detection layer positioned on the semi-permeable membrane and displaying different colors according to the pH of the exudate; an optical detection layer located on the pH detection layer and detecting a color change signal and converting it into an electrical signal; a light source layer positioned on the light detection layer; and an IC module located on the light source layer and connected to the optical detection layer to detect an electrical signal, wherein the IC module is located between the semi-permeable membrane and the pH detection layer and reflects light to be incident to the optical detection layer. It may further include a reflective layer that increases the color change signal to be.

In an embodiment of the present invention, the pH detection layer may include at least one selected from the group consisting of methyl red, bromothymol blue, thymol blue, universal indicator, and combinations thereof.

In an embodiment of the present invention, the photodetection layer may be a photodiode having a PN junction structure.

In an embodiment of the present invention, the P-type semiconductor of the photodiode may include at least one selected from the group consisting of MoSe ₂ , WSe ₂ , Te, P-doped-Si, P-doped-GaAs, and combinations thereof. can include

In an embodiment of the present invention, the N-type semiconductor of the photodiode is at least one selected from the group consisting of MoS ₂ , IGZO, WS ₂ , N-doped-Si, N-doped-GaAs, and combinations thereof. can include

Another embodiment of the present invention for achieving the above technical problem is a possible modified form of the device for monitoring the condition of the affected area, and a semi-permeable membrane having one surface in contact with the affected area and permeable to exudate generated from the affected area; a light source layer positioned on the semi-permeable membrane; a pH detection layer positioned on the light source layer and displaying different colors according to the pH of the exudate; an optical detection layer located on the pH detection layer and detecting a color change signal and converting it into an electrical signal; a reflective layer disposed on the optical detection layer and reflecting light to increase a color change signal incident to the optical detection layer; and an IC module positioned on the reflective layer and connected to the optical detection layer to detect an electrical signal.

In an embodiment of the present invention, the pH detection layer may include at least one selected from the group consisting of methyl red, bromothymol blue, thymol blue, universal indicator, and combinations thereof.

In an embodiment of the present invention, the photodetection layer may be a photodiode having a PN junction structure.

Another embodiment of the present invention for achieving the above technical problem is a dressing for monitoring the condition of the affected area and the configuration of the condition monitoring device; a cover portion positioned to cover an outer surface of the affected area condition monitoring device except for one surface of the affected area condition monitoring device contacting the affected area and visually identifying a color change of the affected area condition monitoring device from the outside; and a fixing part extending from the outer surface of the cover part and having one surface in contact with the affected part and made of an adhesive material to fix the affected part condition monitoring device to the affected part.

In an embodiment of the present invention, the cover part may include at least one selected from the group consisting of polyurethane, hydrocolloid, calcium alginate, hydrofiber, hydrophobic polymer, and combinations thereof.

In an embodiment of the present invention, the pH detection layer may include at least one selected from the group consisting of methyl red, bromothymol blue, thymol blue, universal indicator, and combinations thereof.

In an embodiment of the present invention, the photodetection layer may be a photodiode having a PN junction structure.

According to the configuration as described above, the present invention can grasp the pH change through the exudate of the affected area without removing the dressing attached to the affected area, and can intuitively grasp the state of the affected area through an optical signal such as a color change accordingly.

In addition, since the optical signal is converted into an electrical signal such as current or voltage, it is possible to quantify the signal measured in the affected area, and through this, precise diagnosis can be made.

In addition, unlike the prior art, since the detection unit, the light source unit, and the analysis and conversion unit (IC module) are integrally formed, the structure is simple and the possibility of miniaturization is high.

The effects of the present invention are not limited to the above effects, and should be understood to include all effects that can be inferred from the detailed description of the present invention or the configuration of the invention described in the claims.

1 is a diagram showing the structure of an apparatus for monitoring the condition of an affected area according to an embodiment of the present invention.
Figure 2 is a view showing a deformable structure of another embodiment of the diseased area monitoring device of the present invention.
Figure 3 is a view showing a cross-section of a dressing for monitoring the condition of the affected area, which is another embodiment of the present invention.
Figure 4 is a schematic diagram of the case where the dressing for monitoring the condition of the affected area is implemented as a product.
5 is data confirming that the affected area monitoring device, which is an embodiment of the present invention, can effectively identify color change according to pH.

Hereinafter, the present invention will be described with reference to the accompanying drawings. However, the present invention may be embodied in many different forms and, therefore, is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part is said to be "connected (connected, contacted, combined)" with another part, this is not only "directly connected", but also "indirectly connected" with another member in between. "Including cases where In addition, when a part "includes" a certain component, it means that it may further include other components without excluding other components unless otherwise stated.

Terms used in this specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as "include" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Hereinafter, with reference to attached Figure 1, an embodiment of the present invention, the affected area condition monitoring device 10 will be described in detail.

1 is a diagram showing the structure of an apparatus 10 for monitoring the condition of an affected area according to an embodiment of the present invention.

As shown in Figure 1, the present invention, the affected area monitoring device 10 is a semi-permeable membrane 100, one surface of which is in contact with the affected area and exudate generated from the affected area can pass through; a pH detection layer 300 positioned on the semi-permeable membrane 100 and displaying different colors according to the pH of the exudate; an optical detection layer 400 located on the pH detection layer 300 and detecting a color change signal and converting it into an electrical signal; a light source layer 500 positioned on the light detection layer 400; and an IC module 600 positioned on the light source layer 500 and connected to the light detection layer 400 to detect an electrical signal, wherein the semi-permeable membrane 100 and the pH detection layer 300 It is characterized in that it may further include; a reflective layer 200 located between and increasing the color change signal incident to the light detection layer 400 by reflecting light.

Looking at the technical idea, the object of the present invention is to provide a device that can monitor the condition of the affected area without removing the dressing, etc. included in the dressing to protect the affected area.

First, it is known that affected areas such as wounds release exudates of different pH depending on the degree of healing or infection. In other words, it can be expected that the degree of healing or infection of the affected area can be grasped by analyzing the pH of the exudate.

Therefore, the present invention converts the pH of the exudate into an optical signal through the pH detection layer 300 including a material that emits a different color depending on the pH, and the converted optical signal is intuitively recognized by the naked eye without a separate device. Therefore, it intuitively and immediately reflects the condition of the affected area without removing the dressing.

Since the state of the affected part converted into an optical signal through the pH detection layer 300 is not quantitative, there is a problem in that accurate and precise diagnosis is difficult. To solve this problem, the present invention includes an optical detection layer 400 capable of quantifying the condition of the affected area by converting the optical signal into an electrical signal.

The photodetection layer 400 may be a photodiode having a PN junction structure. In addition, a device capable of quantifying the emitted electrical signal by varying the degree of excitation according to the intensity of light is provided. can be included

It is converted into an electrical signal through the optical detection layer 400, and the quantified state of the affected area is transmitted to the IC module 600 connected to the optical detection layer 400, and the IC module 600 transmits the quantified state of the affected area. Analyze and interpret and derive valid results. At this time, the configuration of the IC module 600 may be configured differently according to the purpose of monitoring.

In order to further improve the device 10 for intuitive, immediate, and at the same time accurate and precise diagnosis without removing the dressing using the mechanism described above, the present invention may further include a reflective layer 200.

The reflective layer 200 helps the pH detection layer 300 receive more light from the light source layer 500 and helps the pH detection layer 300 emit more optical signals. Increases the accuracy and reliability of given monitoring.

Specifically, the pH detection layer 300 depends on the pH of the exudate and simultaneously receives light irradiated from the light source layer 500 and emits a color change or optical signal. Therefore, it can be expected that more optical signals are emitted as more light is irradiated.

Therefore, the reflection layer 200 serves to reflect the light emitted from the light source layer 500 and transmit it to the pH detection layer 300, and at the same time, the reflection layer 200 reflects the light emitted from the pH detection layer 300. It serves to reflect optical signals and send them to the optical detection layer 400 so that more optical signals can be transmitted to the optical detection layer 400 . Accordingly, the present invention can more precisely and accurately monitor the condition of the affected part.

Based on the described technical idea, each configuration will be examined in detail below.

In an embodiment of the present invention, the semi-permeable membrane 100 may be a membrane having one surface in contact with the affected area and having a porous structure or a fluid channel through which exudate extracted from the affected area may pass.

In addition, the semi-permeable membrane 100 may be composed of a material that has adhesive properties and absorbs or transmits exudate from the wound site.

For example, it may be a material containing at least one selected from the group consisting of hydrocolloids, wood cellulose fibers (natural pulp), hydrophilic polymers, and combinations thereof.

In addition, the semi-permeable membrane 100, in direct contact with the affected area, can be configured to include materials that can be included in or used together with conventional medical dressings, such as sterilization materials, moisturizing materials, and treatment materials, and also in the form of gel (gel). ) and the like may be modified and configured in consideration of the use of a medical dressing.

Next, in an embodiment of the present invention, the reflective layer 200 is located on the semi-permeable membrane 100, and monitors by reflecting the optical signal emitted by the pH detection layer 300 and the light emitted by the light source. It serves to increase the accuracy and reliability of

The reflective layer 200 may be formed in a simple manner in which it is stacked and fixed on the semipermeable membrane 100 . However, it is not limited thereto and may be formed including a manufacturing method that can be commonly used to form a laminated structure.

The reflective layer 200 may include a porous structure or a fluid channel as a configuration. This is because the exudate from the affected area must be able to pass through the reflective layer 200 and reach the pH detection layer 300 . Alternatively, for the same reason, the reflective layer 200 may have a reflector located only in a portion of the reflective layer.

The reflective layer 200 may be formed of metal or glass to reflect light, and may have a flat or concave shape. If it is flat, it has the advantage of being able to transmit uniform light to the pH detection layer 300 by reflecting light parallelly and uniformly like a flat mirror. There is an advantage in that light incident on the layer 300 can be concentrated.

Next, in the embodiment of the present invention, the pH detection layer 300 is located on the reflective layer 200 and includes a material that emits a different color according to the pH of the exudate, and accordingly, the pH information of the exudate is optically displayed. It plays a role in converting into a signal.

The pH detection layer 300 may be formed by a simple method of stacking and fixing on the reflective layer 200 . However, it is not limited thereto and may be formed including a manufacturing method that can be commonly used to form a laminated structure.

A substance that emits a different color depending on the pH of the exudate means a substance containing a pH indicator, for example, at least one selected from the group consisting of Methyl Red, Bromothymol blue, Thymol blue, Universal indicator, and combinations thereof. can However, it is not limited thereto, and any material that changes color depending on pH should be construed as being included in the present invention.

Next, in the embodiment of the present invention, the light detection layer 400 is located on the pH detection layer 300 and detects the color change signal emitted by the pH detection layer 300 to electrical signals such as current or voltage. plays a role in converting

The light detection layer 400 may be formed by a simple method of stacking and fixing on the pH detection layer 300 . However, it is not limited thereto and may be formed including a manufacturing method that can be commonly used to form a laminated structure.

The photodetection layer 400 may be a photodiode, particularly a photodiode having a PN junction structure. However, it is not limited thereto, and any device capable of measuring a current that flows when excited by light should be interpreted as being included in the photodetection layer 400 of the present invention.

In the case where the photodetection layer 400 is a photodiode and has a PN junction structure, the P-type semiconductor is a material having characteristics of a P-type semiconductor itself through thin film processing and synthesis, such as Te and WSe ₂ and at least one selected from a group in which P-doping is performed on Si or GaAs to operate as a P-type, and the N-type semiconductor of the photodiode is synthesized with a thin film process such as MoS ₂ , IGZO, and WS ₂ Through, it may include at least one selected from the group that operates as N-type by forming N-doping in Si or GaAs and a material having characteristics of an N-type semiconductor itself.

Next, in the embodiment of the present invention, the light source layer 500 is positioned on the light detection layer 400 and serves as a light source for irradiating light to the pH detection layer 300 .

The light source layer 500 may be formed by a simple method of stacking and fixing on the light detection layer 400 . However, it is not limited thereto and may be formed including a manufacturing method that can be commonly used to form a laminated structure.

In the light source layer 500, the light source may be at least one selected from the group consisting of a light source capable of generating an RGB light source within the structure itself using an optical fiber and an LED, and a combination thereof.

Next, in an embodiment of the present invention, the IC module 600 is located on the light source layer 500 and is electrically connected to the light detection layer 400 . The optical detection layer 400 converts optical signals into electrical signals and transmits them to the IC module 600. The IC module 600 receives the electrical signals and performs analysis and processing according to monitoring purposes.

The IC module 600 may be formed in a simple manner in which it is stacked and fixed on the light source layer 500 . However, it is not limited thereto and may be formed including a manufacturing method that can be commonly used to form a laminated structure.

It may be configured to have various functions according to the monitoring purpose, and may further include a display unit for displaying monitoring results in some cases.

Hereinafter, a modified form of the affected part condition monitoring device 10, which is another embodiment of the present invention, will be described with reference to FIG. 2.

Figure 2 is a view showing a deformable structure of the affected part condition monitoring device 10, which is another embodiment of the present invention.

This embodiment is an affected part condition monitoring device 20 in which the arrangement order of the components in the affected part condition monitoring device 10 described above is different.

In the description, components overlapping with the affected part condition monitoring device 10 described above should be interpreted in the same way, and overlapping descriptions will be omitted and the differences will be mainly described.

The modified form 20 includes a semi-permeable membrane 100, one surface of which is in contact with the affected area and through which exudate generated from the affected area can pass; a light source layer 500 positioned on the semi-permeable membrane 100; a pH detection layer 300 positioned on the light source layer 500 and displaying different colors according to the pH of the exudate; an optical detection layer 400 located on the pH detection layer 300 and detecting a color change signal and converting it into an electrical signal; a reflective layer 200 disposed on the optical detection layer 400 and reflecting light to increase a color change signal incident to the optical detection layer 400; and an IC module 600 positioned on the reflective layer 200 and connected to the optical detection layer 400 to detect an electrical signal.

In addition, the position of the light source layer 500 can be changed under the condition that light can be irradiated to the pH detection layer 300, and the reflection layer 200 also reflects the light emitted from the light source layer 500. If the conditions that can be sent to the pH detection layer 300 and that the optical signal emitted from the pH detection layer 300 can be sent to the light detection layer 400 are met, the position can be changed.

In the modified form 20 of this embodiment that satisfies the above conditions, since the reflective layer 200 is above the pH detection layer 300, the reflective layer 200 does not have to include a porous structure or a fluid channel for passing exudate. There is an advantage.

In addition, it is characterized in that the distance between the light source layer 500 and the pH detection layer 300 is relatively short. Since the material showing different colors according to the pH of the exudate included in the pH detection layer 300 is not a light emitting body, it must be irradiated with light from a light source to emit or reflect an optical signal.

Therefore, the short distance between the light source layer 500 and the pH detection layer 300 has an advantage of enabling the pH detection layer 300 to emit more optical signals.

Since other configurations are the same as those of the affected area monitoring device 10 described above, the pH detection layer 300 includes at least one selected from the group consisting of methyl red, bromothymol blue, thymol blue, universal indicator, and combinations thereof. The photodetection layer 400 may include a photodiode having a PN junction structure.

Hereinafter, referring to FIGS. 3 and 4, another embodiment of the present invention, a dressing 30 for monitoring the condition of an affected area, will be described in detail. In the description, components overlapping with the affected part condition monitoring device 10 described above should be interpreted in the same way, and overlapping descriptions will be omitted and the differences will be mainly described.

Figure 3 is a view showing a cross-section of the dressing 30 for monitoring the condition of the affected area, which is another embodiment of the present invention.

Figure 4 is a schematic diagram of the case where the dressing 30 for monitoring the condition of the affected area is implemented as a product.

As shown in Figure 3, the dressing 30 for monitoring the condition of the affected area includes the device 10 for monitoring the condition of the affected area; The affected area condition monitoring device 10 is positioned to cover the outer surface of the affected area condition monitoring device 10 except for one surface in contact with the affected area, and the color change of the affected area condition monitoring device 10 can be visually identified from the outside. Cover unit 700 that can; and a fixing part 800 extending from the outer surface of the cover part 700 and having one surface in contact with the affected part and made of an adhesive material to fix the affected part condition monitoring device 10 to the affected part. to be characterized

At this time, the affected part condition monitoring device 10 should be interpreted as including the modified form 20 hereinafter.

As shown in FIG. 4, the dressing 30 for monitoring the condition of the affected part includes the device 10 for monitoring the condition of the affected part and is integrally formed. This can be seen that the structure is very simple and excellent in miniaturization, considering that the existing affected area monitoring devices were configured separately from the measurement unit and the status display unit and connected in a wired manner.

In particular, the simple and miniaturized structure has a great advantage in that it is continuously attached to the affected area so that the condition of the affected area can be immediately and continuously grasped.

Looking at each configuration below, in this embodiment, the affected area condition monitoring device 10 is as described above, and the cover part 700 is the affected area condition monitoring device 10 except for one surface in contact with the affected area. It is located so as to cover the outer surface of the affected part condition monitoring device 10.

At this time, the cover part 700 surrounds the affected part condition monitoring device 10 and serves to mitigate shock and protect the affected part condition monitoring device 10 from the outside, and the form is shown under the condition that the above role can be achieved. 3 and 4 may be configured in various shapes other than the angular rectangular shape, and may also have a multi-layered structure.

In addition, the cover part 700 serves to protect the affected area condition monitoring device 10 and at the same time is characterized in that a color change of the affected area condition monitoring device 10 can be visually identified from the outside.

In addition, the cover part 700 is composed of a hydrophobic material to block the penetration of moisture from the outside, and at the same time, it can play a role in preventing the leakage of the exudate beneficial to the healing of the internal wound.

Therefore, the cover part 700 transmits enough light to visually identify the color change of the affected area condition monitoring device 10, can mitigate impact from the outside, and must be made of a hydrophobic material.

For example, the cover part 700 may include at least one selected from the group consisting of polyurethane, hydrocolloid, calcium alginate, hydrofiber, hydrophobic polymer, and combinations thereof.

Next, in this embodiment, the fixing part 800 is positioned to extend on the outer surface of the cover part 700, and one side is in contact with the affected area or the skin around the affected area and is composed of an adhesive material, so that the affected area condition monitoring device It serves to fix (10) to the affected area. At this time, since the dressing 40 for monitoring the condition of the affected area may be fixed by a separate means such as taping, the cover part 700 does not necessarily have to be made of an adhesive material.

In addition, the fixing part 800 may be made of a material having ductility so as not to be damaged by the movement of the affected part and the body, and may be made of a material having a certain level of hydrophobicity so as not to be vulnerable from external moisture such as sweat.

Additionally, the fixing part 800 may have a porous structure for discharging sweat and enabling ventilation.

Since other configurations are the same as those of the affected area monitoring device 10 described above, the pH detection layer 300 includes at least one selected from the group consisting of methyl red, bromothymol blue, thymol blue, universal indicator, and combinations thereof. The photodetection layer 400 may include a photodiode having a PN junction structure.

Experimental example

Color change confirmation test according to pH

This will be described with reference to FIG. 5 .

Figure 5 is data confirming that the affected area condition monitoring device, which is an embodiment of the present invention, can effectively identify color change according to pH.

This experiment was conducted to check whether the color change of the indicator according to the pH change appeared appropriately (to a distinguishable extent), and was performed by injecting the same amount of commercial pH buffer to the pH indicator having the same ratio at room temperature.

Referring to Figure 5 (a), the first to the third on the left are the results of equally injecting 2 ml of buffer solutions of pH4, pH5 and pH6 to the specified Methyl Red indicator. Since the color is clearly distinguished by the naked eye according to the pH, it was confirmed that the present invention can achieve the effect of identifying the state of the affected area with the naked eye.

In addition, referring to Figure 5 (c), which measured absorbance under the same conditions, the light source corresponding to RGB showed absorbance values classified according to pH, which means that the pH detection layer of the present invention quantitatively measures the pH value according to the affected area. This is a significant result confirming that it can be classified as and quantitatively measured.

Similarly, the first to fourth lines on the right are the results of equally injecting 2 ml of buffer solutions of pH6, pH7, pH8 and pH9 into the specified bromothymol blue indicator. It was possible to distinguish colors with the naked eye according to pH, and it was confirmed that quantitative measurement and classification of pH was possible based on the absorbance value in the light source corresponding to RGB as shown in FIG. 5 (b).

Specifically, although FIGS. 5 (b) and (c) show differences depending on the light source (wave length 405 nm 532 nm 638 nm corresponding to RGB), it can be seen that the change in color after the indicator and pH change can be observed. there was.

Therefore, it can be concluded from the above results that the present invention can classify the pH according to the change in the state of the affected area as a color change (light signal), and can quantitatively read the light signal using a PN photo diode.

The above description of the present invention is for illustrative purposes, and those skilled in the art can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is indicated by the following claims, and all changes or modifications derived from the meaning and scope of the claims and equivalent concepts should be interpreted as being included in the scope of the present invention.

10: affected area monitoring device
20: deformed form
30: Dressing for monitoring the condition of the affected area
100: semi-permeable membrane
200: reflection layer
300: pH detection layer
400: light detection layer
500: light source layer
600: IC module
700: cover part
800: fixed part

Claims (12)

a semi-permeable membrane, one side of which is in contact with the affected area and through which exudate generated from the affected area can pass;
a pH detection layer positioned on the semi-permeable membrane and displaying different colors according to the pH of the exudate;
an optical detection layer located on the pH detection layer and detecting a color change signal and converting it into an electrical signal;
a light source layer positioned on the light detection layer; and
An IC module located on the light source layer and connected to the light detection layer to detect an electrical signal;
A reflective layer disposed between the semi-permeable membrane and the pH detection layer and reflecting light to increase a color change signal incident to the light detection layer; characterized in that it further comprises, the disease monitoring device. According to claim 1,
The pH detection layer is characterized in that it comprises any one or more selected from the group consisting of Methyl Red, Bromothymol Blue, Thymol blue, Universal indicator and combinations thereof, the affected area monitoring device. According to claim 1,
The photodetection layer is characterized in that the photodiode of the PN junction structure, the affected area monitoring device. According to claim 3,
The P-type semiconductor of the photodiode comprises at least one selected from the group consisting of MoSe ₂ , WSe ₂ , Te, P-doped-Si, P-doped-GaAs, and combinations thereof. condition monitoring device. According to claim 3,
The N-type semiconductor of the photodiode comprises at least one selected from the group consisting of MoS ₂ , IGZO, WS ₂ , N-doped-Si, N-doped-GaAs, and combinations thereof. condition monitoring device. a semi-permeable membrane, one side of which is in contact with the affected area and through which exudate generated from the affected area can pass;
a light source layer positioned on the semi-permeable membrane;
a pH detection layer positioned on the light source layer and displaying different colors according to the pH of the exudate;
an optical detection layer located on the pH detection layer and detecting a color change signal and converting it into an electrical signal;
a reflective layer disposed on the optical detection layer and reflecting light to increase a color change signal incident to the optical detection layer; and
An IC module located on the reflective layer and connected to the optical detection layer to sense an electrical signal; characterized in that it comprises a wound state monitoring device. According to claim 6,
The pH detection layer is characterized in that it comprises any one or more selected from the group consisting of Methyl red, Bromothymol blue, Thymol blue, Universal indicator and combinations thereof, the affected area monitoring device. According to claim 6,
The photodetection layer is characterized in that the photodiode of the PN junction structure, the affected area monitoring device. Claim 1 or claim 6, the affected area monitoring device;
a cover portion positioned to cover an outer surface of the affected area condition monitoring device except for one surface of the affected area condition monitoring device contacting the affected area and visually identifying a color change of the affected area condition monitoring device from the outside; and
Characterized in that it comprises a, a dressing for monitoring the condition of the affected area, which is located on the outer surface of the cover part and is in contact with the affected area and is composed of an adhesive material to fix the affected area monitoring device to the affected area. According to claim 9,
The cover part, characterized in that it comprises at least one selected from the group consisting of polyurethane, hydrocolloid, calcium alginate, hydrofiber, hydrophobic polymer, and combinations thereof, dressing for monitoring the condition of the affected area. According to claim 9,
The pH detection layer is characterized in that it comprises any one or more selected from the group consisting of methyl red, bromothymol blue, thymol blue, universal indicator and combinations thereof, dressing for monitoring the condition of the affected area. According to claim 9,
The optical detection layer is characterized in that the photodiode of the PN junction structure, dressing for monitoring the condition of the affected area.

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