WO2017041386A1

WO2017041386A1 - System and method for monitoring extent of wound infection

Info

Publication number: WO2017041386A1
Application number: PCT/CN2015/098615
Authority: WO
Inventors: 张贯京; 陈兴明
Original assignee: 深圳市前海颐老科技有限公司
Priority date: 2015-09-12
Filing date: 2015-12-24
Publication date: 2017-03-16
Also published as: CN105250074A

Abstract

Provided are a system and method for monitoring the extent of wound infection. The system for monitoring extent of wound infection comprises a monitoring device (1), a bandage main body (2), and a smart sensor (20) arranged on the bandage main body (2). The monitoring device (1) comprises a photodiode (10), a first light source (121) for producing light of a first wavelength, a fiber optic coupler (14), and a processor (16). The smart sensor (20) comprises a first multi-mode optical fiber (201), a second multi-mode optical fiber (203), and a single-mode optical fiber (202); the surface of the single-mode optical fiber (202) is coated with a pH-sensitive membrane (2020) layer. The processor (16) is used for calculating, according to the photocurrent produced by the light of first wavelength illuminating the photodiode (10), the absorption of the light of first wavelength by the pH-sensitive membrane (2020) and according to a preset correlation between pH value and absorption, determining the pH value of a current wound. The processor (16) is also used for determining, according to the preset correlation between the pH value and extent of wound infection, the extent of infection of the current wound.

Description

Wound infection degree monitoring system and method

Technical field

The invention relates to a wound first aid device, in particular to a wound infection degree monitoring system and method.

Background technique

Bandages are materials used to secure and protect the wound. Ordinary bandages come in a variety of styles. The simplest one is a single shed, made of gauze or cotton, for the limbs, tail, head and chest and abdomen. The other is a complex bandage, which can be made into various shapes according to the body part and shape. The material is a double-layer cotton cloth, and cotton of different thickness can be sandwiched between the double-layer cotton cloths, and a cloth strip is arranged around the knot so as to be knotted and fixed, such as an eye. Bandages, back waist bandages, front chest bandages, abdominal bandages, etc.

However, the above bandages are only suitable for dressing and hemostasis, and it is impossible to monitor the wound. The doctor or the patient cannot understand the degree of infection of the wound through the bandage. Further, the bandage cannot remind the patient to change the medicine according to the degree of infection of the wound.

Summary of the invention

The main object of the present invention is to provide a wound infection degree monitoring system, which aims to solve the problem that the ordinary bandage cannot monitor the infection degree of the wound and remind the patient to change the medicine according to the degree of infection.

In order to achieve the above object, the present invention provides a wound infection degree monitoring system, comprising: a monitoring device, a bandage body, and a smart sensor disposed on the bandage body, wherein the monitoring device comprises a photodiode, a first light source, a fiber coupler and a processor, the photodiode being coupled to the processor, the first light source being coupled to the fiber coupler;

The smart sensor includes a first multimode fiber, a second multimode fiber, and a single mode fiber, and the single mode fiber is located between the first multimode fiber and the second multimode fiber and forms a straight line connection. The surface of the single-mode optical fiber is coated with a layer of PH-sensitive film, and the smart sensor is located on the wound when the bandage body is attached to the wound;

The fiber coupler is coupled to the first multimode fiber, and the second multimode fiber is coupled to the photodiode;

The first light source is configured to generate light of a first wavelength and transmit the light of the first wavelength to the fiber coupler;

The fiber coupler is configured to transmit the light of the first wavelength to the first multimode fiber, and the light of the first wavelength passes through the single mode fiber to the second multimode fiber;

The photodiode is configured to receive light of a first wavelength from a second multimode fiber and generate a photocurrent when the light of the first wavelength illuminates the photodiode;

The processor is configured to calculate, according to the photocurrent generated by the photodiode of the first wavelength, the absorption rate of the light of the first wavelength by the PH sensitive film, and preset according to the PH value and the absorption rate Correspondence relationship, determining the pH value of the current wound; and

The processor is further configured to determine the degree of infection of the current wound according to a preset correspondence between the PH value and the degree of infection of the wound.

Preferably, the absorption rate of the light of the first wavelength by the PH-sensitive film is a rate of change of the photocurrent generated by the light of the first wavelength being irradiated onto the photodiode.

Preferably, the monitoring device further comprises a second light source connected to the fiber coupler, the second light source is for generating light of a second wavelength, and the fiber coupler is further configured to use the first wavelength The light and the second wavelength of light are collected into a bundle of combined light and emitted to a first multimode fiber, the combined light passing through the single mode fiber to the second multimode fiber.

Preferably, the photodiode is further configured to receive light of a second wavelength of the combined light from the second multimode fiber, and generate a photocurrent when the second wavelength of light illuminates the photodiode, if When the photocurrent when the second wavelength of light illuminates the photodiode is not within the preset range, the transmission path of the first wavelength of light and the second wavelength of light is corrected by the fiber coupler until the second wavelength of light is irradiated The photocurrent of the photodiode is within a preset range.

Preferably, the PH sensitive film comprises three pH indicator agents, which are bromophenol blue, phenol red and bromocresol red purple.

Preferably, the bandage body comprises a cover layer, a drug layer and an adhesive layer, the cover layer is adhered to the drug layer, and the drug layer is pasted with the adhesive layer, wherein:

The drug layer is provided with an adhesive strip for pasting the adhesive layer and a plurality of bumps including lysozyme, and the bump is disposed on a surface of the drug layer and the adhesive layer, the drug layer An adhesive strip is disposed on a peripheral edge of the surface of the drug layer and the adhesive layer, and the drug layer is an adhesive structure that can be peeled off from the adhesive layer;

The adhesive layer is provided with a plurality of meshes and an adhesive strip for sticking to the edge of the wound, and the adhesive strip of the adhesive layer is disposed on the peripheral edge of the surface of the adhesive layer, the adhesive layer and the drug layer When pasted, the bumps are embedded in the mesh, the bumps contacting the wound to sterilize the wound by lysozyme.

Preferably, the system further comprises a display device for prompting the user to replace the drug layer based on the degree of infection of the wound.

In another aspect, the present invention also provides a method for monitoring the degree of wound infection using the wound infection degree monitoring system described above, the method comprising the steps of:

The first light source generates light of a first wavelength;

Transmitting, by the fiber coupler, the first wavelength of light to the first multimode fiber of the smart sensor, the first wavelength of light passing through the single mode fiber to the second multimode fiber of the smart sensor;

When the photodiode receives the light of the first wavelength from the second multimode fiber of the smart sensor, generating a photocurrent when the light of the first wavelength illuminates the photodiode;

The processor calculates the absorption rate of the light of the first wavelength by the PH sensitive film according to the photocurrent generated by the light of the first wavelength, and determines the corresponding relationship between the PH value and the absorption rate. The pH value of the current wound; and

The processor determines the degree of infection of the current wound based on a predetermined correspondence between the pH value and the degree of infection of the wound.

Preferably, the method further comprises the step of alerting the user to replace the drug layer by the display device according to the degree of infection of the current wound.

Compared with the prior art, the wound infection degree monitoring system of the present invention adopts the above technical solution, and achieves the following technical effects: monitoring the degree of infection of the wound, and reminding the patient to change the medicine according to the degree of infection, which is beneficial for timely treatment of the wound.

DRAWINGS

1 is a functional architecture diagram of a preferred embodiment of a wound infection degree monitoring system of the present invention;

2 is a schematic structural view of a smart sensor in a wound infection degree monitoring system of the present invention;

Figure 3 is a schematic view of the smart sensor in the wound infection degree monitoring system of the present invention when it is attached to a wound;

Figure 4 is a flow chart of a preferred embodiment of the method for detecting the degree of wound infection of the present invention;

Figure 5 is a schematic view showing a preferred embodiment of the preset correspondence between the absorption rate and the pH value of the present invention;

Figure 6 is a cross-sectional structural view showing a preferred embodiment of the bandage body in the wound infection degree monitoring system of the present invention;

Figure 7 is a plan view showing the structure of a preferred embodiment of the drug layer in the body of the bandage of the present invention;

Figure 8 is a plan view showing a preferred embodiment of the adhesive layer in the bandage body of the present invention;

Figure 9 is a cross-sectional structural view showing the combination of a bump and a mesh in the body of the bandage of the present invention.

The implementation, functional features, and advantages of the present invention will be further described in conjunction with the embodiments.

detailed description

The specific embodiments, structures, features and functions of the present invention are described in detail below with reference to the accompanying drawings and preferred embodiments. It is to be understood that the specific embodiments of the invention are not intended to be construed

In order to achieve the object of the present invention, the present invention provides a wound infection degree monitoring system for detecting the degree of infection of a wound, thereby facilitating the doctor or the patient to understand the condition of the wound and facilitating the healing of the wound.

As shown in Fig. 1, Fig. 1 is a functional structural diagram of a preferred embodiment of the wound infection degree monitoring system of the present invention. In the present embodiment, the wound infection degree monitoring system 100 includes a monitoring device 1, a bandage body 2, and a smart sensor 20.

The monitoring device 1 includes a photodiode 10, a first light source 121, a second light source 122, a fiber coupler 14, a processor 16, and a display device 18. The first light source 121 and the second light source 122 are connected to the fiber coupler 14 , the photodiode 10 is connected to the processor 16 , and the processor 16 is connected to the display device 18 .

The first light source 121 is configured to generate light of a first wavelength and transmit the light of the first wavelength to the fiber coupler 14. In this embodiment, the light of the first wavelength is 590 nm light.

The second light source 122 is configured to generate light of a second wavelength and transmit light of the second wavelength to the fiber coupler 14. In this embodiment, the light of the second wavelength is light of a wavelength of 860 nanometers.

The fiber coupler 14 combines the light of the first wavelength and the light of the second wavelength into a bundle of combined light, and corrects the propagation path of the combined light. Specifically, the fiber coupler 14 converts two different wavelengths of light (ie, a first wavelength of light and a second wavelength of light) into a combined light by refracting and transmitting, that is, So that the two different wavelengths of light propagation paths are consistent.

The photodiode 10 is configured to receive combined light, and convert the light of the first wavelength and the light of the second wavelength (ie, the optical signal) of the combined light into corresponding electrical signals (ie, light of the first wavelength and second The light of the wavelength is irradiated to the photocurrent generated by the photodiode 10). In other embodiments, the photodiode 10 can also receive light of a first wavelength (or light of a second wavelength) separately, and convert light of a first wavelength (or light of a second wavelength) into a corresponding electric quantity. signal.

The processor 16 is configured to acquire, according to the photodiode 10, the first wavelength of light corresponding to the converted electrical signal and the second wavelength of light corresponding to the converted electrical signal, and the first wavelength of light corresponding to the converted electrical signal And the second wavelength of light is analyzed and processed corresponding to the converted electrical signal to monitor the degree of infection of the wound.

The display device 18 is configured to display the light of the first wavelength corresponding to the converted electrical signal and the light of the second wavelength corresponding to the converted electrical signal. Further, the display device 18 is further configured to display the pH value of the wound and the wound. The degree of infection.

The smart sensor 20 is disposed on the attachment surface of the bandage body 2. The adhesive surface is provided with a medical adhesive, so that the bandage body 2 can be attached to the skin of the human body without falling off. The smart sensor 20 can be located anywhere on the attachment surface of the bandage body 2 (as long as the bandage body 2 can completely cover the smart sensor 20). The bandage body 2 can be, but is not limited to, a medical tape.

Referring to FIG. 2, FIG. 2 is a schematic structural diagram of a smart sensor in a wound infection degree monitoring system according to the present invention. The smart sensor 20 includes a first multimode fiber 201, a second multimode fiber 203, and a single mode fiber 202. The single mode fiber 202 is located between the first multimode fiber 201 and the second multimode fiber 203 and forms a straight line connection. The first multimode fiber 201, the second multimode fiber 203, and the single mode fiber 202 are cylindrical. The surface of the single mode fiber 202 is covered with a layer of PH sensitive film 2020, which is prepared by a sol and gel method. The pH sensitive film 2020 includes a plurality of pH indicator agents. Specifically, the pH sensitive film 2020 includes three pH indicator agents (eg, bromophenol blue, phenol red, and bromocresol red purple). Through the pH indicator on the PH sensitive membrane 2020, as shown in FIG. 3, FIG. 3 is a schematic diagram of the smart sensor 20 in the wound infection degree monitoring system of the present invention, which can monitor the wound 3 PH value (can be monitored from pH 2.0~9.0). By monitoring the pH of the wound 3, the degree of infection of the wound 3 can be judged. For example, a pH between 4.0 and 4.5 is normal, indicating that there is no infection of wound 3, and a pH between 7.5 and 9.0 is abnormal, indicating that the wound 3 is inflamed. Specifically, when the pH of the wound 3 changes, the color of the pH indicator on the pH sensitive film 2020 changes, so that the absorption rate of light of the first wavelength also changes.

The shape of the bandage body 2 may be, but not limited to, a rectangle, a square, a circle, or the like. In the present embodiment, in order to facilitate monitoring the degree of infection of the wound, the smart sensor 20 is disposed at an intermediate position of the bandage body 2 such that the smart sensor 20 is located at the position of the wound when the bandage body 2 is just pasted to the wound ( Or, the area with the most severe wounds). As shown in FIG. 3, when the bandage body 2 is attached to the wound 3, the smart sensor 20 is positioned on the wound 3.

As shown in FIG. 1, the fiber coupler 14 is coupled to a first multimode fiber 201, the second multimode fiber 203 is coupled to a photodiode 10, and the fiber coupler 14 combines light (ie, by wavelength) A combined light of 590 nm light and 860 nm wavelength light is emitted to the first multimode fiber 201 such that the combined light passes through the first multimode fiber 201, the single mode fiber 202, and the second multimode Optical fiber 203.

When the combined light propagates in the single mode fiber 202, the PH sensitive film 2020 can absorb light of a first wavelength to a different extent, and the light sensitive film 2020 absorbs light of a first wavelength. Rate is affected by changes in the pH of the injured port 3. The PH-sensitive film 2020 has a predetermined correspondence relationship between the absorption rate of the light of the first wavelength and the pH of the wound 3. Specifically, the PH value of the wound 3 is larger, and the PH-sensitive film 2020 is The absorption rate of light of one wavelength is higher. The pH-sensitive film 2020 has a preset correspondence relationship between the absorption rate of the light of the first wavelength and the pH value of the wound 3, is obtained according to a large number of experimental tests, and is stored in the monitoring device 1. As shown in FIG. 5, FIG. 5 is a schematic diagram of a preferred embodiment of the preset relationship between the absorption rate and the pH value of the present invention. When the pH is 2, the PH-sensitive film 2020 is light of the first wavelength. The absorption rate is 0. If the pH is 4, the absorption rate of the light of the first wavelength is 2020.

In this embodiment, it is to be noted that the photodiode 10 obtains light of a first wavelength from the second multimode fiber 203, and converts the light of the first wavelength into an electrical signal, according to The electrical signal converted into light of the first wavelength calculates the absorption rate of the light of the first wavelength by the pH sensitive film 2020. The electrical signal refers to the photocurrent generated on the photodiode 10 due to the illumination of the first wavelength of light. Wherein the intensity of the light of the first wavelength is proportional to the photocurrent. The PH-sensitive film 2020 absorbs light of the first wavelength to different degrees, and weakens the intensity of the light of the first wavelength.

In the present embodiment, the absorption rate of the light of the first wavelength by the PH-sensitive film 2020 is the rate of change of the photocurrent generated by the light of the first wavelength being irradiated onto the photodiode 10. Specifically, a=c/b, where b is the photocurrent obtained by the photodiode 10 when the light of the first wavelength is not absorbed, and c is the photosensitive film of the first wavelength The photocurrent obtained by the photodiode 10 when 2020 is absorbed, a is the rate of change of the photocurrent, that is, the absorption rate of the light of the first wavelength by the pH sensitive film 2020.

When the combined light propagates in the single mode fiber 202, the PH sensitive film 2020 does not light the second wavelength due to the pH indicator property on the PH sensitive film 2020 (ie, light of a wavelength of 860 nm) is absorbed, and therefore, it is possible to correct whether the optical path of the combined light is correct by the light of the second wavelength. Specifically, the photodiode 10 obtains light of a second wavelength from the second multimode fiber 203 and converts light of the second wavelength into an electrical signal. The electrical signal refers to the photocurrent generated on the photodiode 10 due to the illumination of the second wavelength of light. If the photocurrent generated by the second wavelength of light irradiation is within a predetermined range (for example, between thirty microamps and forty microamps), it indicates that the propagation path of the combined light is correct, if the second wavelength is The photocurrent generated by the light illumination is not within a preset range (for example, between thirty microamps and forty microamps), indicating that the propagation path of the combined light is incorrect, and the fiber coupler 14 is adjusted such that the second wavelength The photocurrent generated by the light irradiation is within a preset range.

Further, as shown in FIG. 6, FIG. 6 is a schematic cross-sectional structural view of a preferred embodiment of the bandage body in the wound infection degree monitoring system of the present invention. In the embodiment, the bandage body 2 is composed of three layers of materials, respectively The cover layer 22, the drug layer 24 and the adhesive layer 26. The cover layer 22 is adhered to the drug layer 24, and the drug layer 24 is adhered to the adhesive layer 26.

The cover layer 22 is a waterproof non-woven gauze layer, and the waterproof non-woven gauze layer can effectively prevent the external environment from polluting the bandage body 2. The waterproof non-woven gauze layer can be specifically made of waterproof cotton spunlace. A five-woven layer or any other suitable layer of waterproof nonwoven gauze. The surface of the cover layer 22 and the drug layer 24 is coated with a medical ointment such that the cover layer 22 is adhered to the drug layer 24.

As shown in Figure 7, Figure 7 is a schematic plan view of a preferred embodiment of the drug layer in the body of the bandage. In this embodiment, the drug layer 24 includes an adhesive strip 241 located at an edge of the drug layer 24, and the adhesive strip 241 is pasted with the adhesive layer 26, so that the drug layer 24 is adhered. The stickers 26 are pasted together. Further, the surface to which the drug layer 24 and the adhesive layer 26 are pasted (i.e., the surface of the drug layer 24 including the adhesive strip 241) has bumps 240 that are uniformly or unevenly distributed. The bumps 240 may be, but are not limited to, circular bumps, diamond bumps, square bumps, rectangular bumps, or other shaped bumps. The bump 240 is a granule comprising lysozyme which is capable of sterilizing a wound. Since the number of the bumps 240 is large, in other embodiments, the partial bumps 240 are composed of a composite layer of water-containing superabsorbent resin, and the composite layer of the water-absorbing superabsorbent resin is used for absorbing liquid exudation of the wound of the skin, which is beneficial to the skin. The healing of the wound. That is to say, among all the bumps of the drug layer 24, a part is a bump including lysozyme (also referred to as a first bump), and a part is a bump including an aqueous superabsorbent resin (also referred to as a second Bump). The drug layer 24 can be gauze or medical plastic. It should be noted that the drug layer 2 adhered to the surface of the adhesive layer 3 can be torn off. That is to say, the drug layer 2 is an adhesive structure which can be peeled off from the adhesive layer 3, which is convenient for dressing change, is beneficial to the healing of the skin wound, and reduces the secondary damage to the skin wound when the dressing is changed.

As shown in Figure 8, Figure 8 is a plan view of a preferred embodiment of the adhesive layer in the body of the bandage. In this embodiment, the surface to which the adhesive layer 26 and the drug layer 24 are pasted includes a plurality of uniformly or unevenly distributed meshes 260, which may be, but are not limited to, circular, diamond, square. , rectangular or other shaped mesh 260. The other side of the adhesive layer 26 includes an adhesive strip 260 that is located at the peripheral edge of the adhesive layer 26 that is used to adhere to the edge of the wound of the skin. The bandage body 2 further includes a smart sensor 20 located on the adhesive layer 26.

As shown in FIG. 9, FIG. 9 is a schematic cross-sectional structural view showing a combination of a bump and a mesh in the body of the bandage. 7 and FIG. 8, when the adhesive layer 26 is pasted with the drug layer 24, the bump 240 is embedded in the mesh 260 (as shown in FIG. 9, the bump 240 is embedded in the mesh 260). The bump 240 is brought into contact with the wound of the skin to sterilize the wound of the skin and/or to absorb the exudate of the wound. The adhesive layer 26 is gauze or medical plastic, which is light and thin (between 0.01 and 0.1 mm) and soft.

The present invention also provides a method for monitoring the degree of wound infection using the above-described wound infection degree monitoring system. As shown in Fig. 4, Fig. 4 is a flow chart showing a preferred embodiment of the method for detecting the degree of wound infection of the present invention. Referring to FIG. 1, in the embodiment, the method for detecting the degree of wound infection includes the following steps:

Step S10: generating light of a first wavelength and light of a second wavelength. Specifically, light of a first wavelength is generated by the first light source 121, and light of a second wavelength is generated by the second light source 122. Specifically, the light of the first wavelength is light of 590 nm, and the light of the second wavelength is light of 860 nm.

Step S11: The light of the first wavelength and the light of the second wavelength are collected into a bundle of combined light by the fiber coupler 14 and sent to the first multimode fiber 201 of the smart sensor 20.

Step S12: determining whether the photocurrent generated by the light of the second wavelength is irradiated to the photodiode is within a preset range. Specifically, the photodiode 10 receives the light of the first wavelength of the combined light from the second multimode optical fiber 203 of the smart sensor 20, and determines whether the photocurrent generated by the light of the second wavelength illuminates the photodiode 10 is within a preset range (eg, , between 30 microamps and 40 microamps). When the photocurrent generated by the light of the second wavelength illuminating the photodiode 10 is not within the preset range, the flow advances to step S13. When the photocurrent generated by the light of the second wavelength illuminating the photodiode 10 is within a preset range, the flow advances to step S14.

Step S13: adjusting the propagation path of the combined light by the fiber coupler 14 until the photocurrent generated by the light of the second wavelength illuminates the photodiode is within a preset range.

Step S14: The photodiode 10 receives the first wavelength of light in the combined light from the second multimode fiber 203, and calculates the PH of the surface of the single mode fiber 202 when the light of the first wavelength passes through the single mode fiber 202 of the smart sensor 20. The absorption rate of the sensitive film to the light of the first wavelength. Specifically, the absorption rate of the light of the first wavelength by the pH-sensitive film 2020 is the rate of change of the photocurrent generated by the light of the first wavelength being irradiated onto the photodiode 10. Specifically, a=c/b, where b is the photocurrent obtained by the photodiode 10 when the light of the first wavelength is not absorbed, and c is the light of the first wavelength by the PH The photocurrent obtained by the photodiode 10 when the sensitive film 2020 is absorbed, a is the rate of change of the photocurrent, that is, the absorption rate of the light of the first wavelength by the pH sensitive film 2020.

Step S15: The processor 16 determines the PH value of the current wound 3 according to a preset correspondence between the absorption rate of the light of the first wavelength and the PH value of the wound by the PH sensitive film 2020. Specifically, as shown in FIG. 5, the wound 3 has a pH of 4 when the absorption rate is 10%.

Step S16: The processor 16 determines the degree of infection of the current wound 3 according to a preset correspondence between the PH value and the degree of infection of the wound, and currently displays the degree of infection of the current wound through the display device 18. Specifically, if the determined pH is between 4.0 and 4.5, indicating that the wound 3 is not infected, the character "normal" is displayed on the display device 18, and if the determined pH is between 7.5 and 9.0, the wound 3 is inflamed, The character "Inflammation" is displayed. In other embodiments, the processor 16 prompts the user to change the medication when the degree of infection of the wound 3 is inflamed, i.e., prompts the user to replace the drug layer 24.

It should be noted that, in the above flowchart, the second light source 122 may not generate light of the second wavelength, and thus, only the light of the first wavelength is transmitted to the first multimode optical fiber 201 of the smart sensor 20 in step S11. And steps S12 and S13 can be omitted.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the invention, and the equivalent structure or equivalent function changes made by the description of the present invention and the drawings are directly or indirectly applied to other related technologies. The fields are all included in the scope of patent protection of the present invention.

Claims

A wound infection degree monitoring system, comprising: a monitoring device, a bandage body, and a smart sensor disposed on the bandage body, wherein the monitoring device comprises a photodiode, a first light source, a fiber coupler, and a processing The photodiode is connected to the processor, and the first light source is connected to the fiber coupler;

The smart sensor includes a first multimode fiber, a second multimode fiber, and a single mode fiber, and the single mode fiber is located between the first multimode fiber and the second multimode fiber and forms a straight line connection. The surface of the single-mode optical fiber is coated with a layer of PH-sensitive film, and the smart sensor is located on the wound when the bandage body is attached to the wound;

The fiber coupler is coupled to the first multimode fiber, and the second multimode fiber is coupled to the photodiode;

The first light source is configured to generate light of a first wavelength and transmit the light of the first wavelength to the fiber coupler;

The fiber coupler is configured to transmit the light of the first wavelength to the first multimode fiber, and the light of the first wavelength passes through the single mode fiber to the second multimode fiber;

The photodiode is configured to receive light of a first wavelength from a second multimode fiber and generate a photocurrent when the light of the first wavelength illuminates the photodiode;

The processor is configured to calculate, according to the photocurrent generated by the photodiode of the first wavelength, the absorption rate of the light of the first wavelength by the PH sensitive film, and preset according to the PH value and the absorption rate Correspondence relationship, determining the pH value of the current wound; and

The processor is further configured to determine the degree of infection of the current wound according to a preset correspondence between the PH value and the degree of infection of the wound.
The wound infection degree monitoring system according to claim 1, wherein the bandage body comprises a cover layer, a drug layer and an adhesive layer, the cover layer is adhered to the drug layer, and the drug layer and the adhesive layer are pasted. ,among them:

The drug layer is provided with an adhesive strip for pasting the adhesive layer and a plurality of bumps including lysozyme, and the bump is disposed on a surface of the drug layer and the adhesive layer, the drug layer An adhesive strip is disposed on a peripheral edge of the surface of the drug layer and the adhesive layer, and the drug layer is an adhesive structure that can be peeled off from the adhesive layer;

The adhesive layer is provided with a plurality of meshes and an adhesive strip for sticking to the edge of the wound, and the adhesive strip of the adhesive layer is disposed on the peripheral edge of the surface of the adhesive layer, the adhesive layer and the drug layer When pasted, the bumps are embedded in the mesh, the bumps contacting the wound to sterilize the wound by lysozyme.
The wound infection degree monitoring system according to claim 1, wherein the absorption rate of the first wavelength of light by the pH sensitive film is a photocurrent generated by the light of the first wavelength being irradiated onto the photodiode. Rate of change.
The wound infection degree monitoring system according to claim 3, wherein the bandage body comprises a cover layer, a drug layer and an adhesive layer, the cover layer is adhered to the drug layer, and the drug layer and the adhesive layer are pasted. ,among them:

The drug layer is provided with an adhesive strip for pasting the adhesive layer and a plurality of bumps including lysozyme, and the bump is disposed on a surface of the drug layer and the adhesive layer, the drug layer An adhesive strip is disposed on a peripheral edge of the surface of the drug layer and the adhesive layer, and the drug layer is an adhesive structure that can be peeled off from the adhesive layer;

The adhesive layer is provided with a plurality of meshes and an adhesive strip for sticking to the edge of the wound, and the adhesive strip of the adhesive layer is disposed on the peripheral edge of the surface of the adhesive layer, the adhesive layer and the drug layer When pasted, the bumps are embedded in the mesh, the bumps contacting the wound to sterilize the wound by lysozyme.
The wound infection level monitoring system of claim 1 wherein said monitoring device further comprises a second light source coupled to said fiber optic coupler, said second light source for generating a second wavelength Light, the fiber coupler is further configured to combine the light of the first wavelength and the light of the second wavelength into a bundle of combined light and emit the light to the first multimode fiber, and the combined light passes through the single mode fiber to the The second multimode fiber.
The wound infection degree monitoring system according to claim 5, wherein the bandage body comprises a cover layer, a drug layer and an adhesive layer, the cover layer is adhered to the drug layer, and the drug layer and the adhesive layer are pasted. ,among them:

The drug layer is provided with an adhesive strip for pasting the adhesive layer and a plurality of bumps including lysozyme, and the bump is disposed on a surface of the drug layer and the adhesive layer, the drug layer An adhesive strip is disposed on a peripheral edge of the surface of the drug layer and the adhesive layer, and the drug layer is an adhesive structure that can be peeled off from the adhesive layer;

The adhesive layer is provided with a plurality of meshes and an adhesive strip for sticking to the edge of the wound, and the adhesive strip of the adhesive layer is disposed on the peripheral edge of the surface of the adhesive layer, the adhesive layer and the drug layer When pasted, the bumps are embedded in the mesh, the bumps contacting the wound to sterilize the wound by lysozyme.
The wound infection degree monitoring system according to claim 5, wherein the photodiode is further configured to receive light of a second wavelength of the combined light from the second multimode fiber and generate a second wavelength The photocurrent when the light illuminates the photodiode, and if the photocurrent when the second wavelength of light illuminates the photodiode is not within a preset range, the first wavelength of light is corrected by the fiber coupler and the second The transmission path of the wavelength of light until the photocurrent of the second wavelength of light illuminates the photodiode within a preset range.
The wound infection degree monitoring system according to claim 7, wherein the bandage body comprises a cover layer, a drug layer and an adhesive layer, the cover layer is adhered to the drug layer, and the drug layer and the adhesive layer are pasted. ,among them:

The drug layer is provided with an adhesive strip for pasting the adhesive layer and a plurality of bumps including lysozyme, and the bump is disposed on a surface of the drug layer and the adhesive layer, the drug layer An adhesive strip is disposed on a peripheral edge of the surface of the drug layer and the adhesive layer, and the drug layer is an adhesive structure that can be peeled off from the adhesive layer;

The adhesive layer is provided with a plurality of meshes and an adhesive strip for sticking to the edge of the wound, and the adhesive strip of the adhesive layer is disposed on the peripheral edge of the surface of the adhesive layer, the adhesive layer and the drug layer When pasted, the bumps are embedded in the mesh, the bumps contacting the wound to sterilize the wound by lysozyme.
The wound infection degree monitoring system according to claim 1, wherein said PH sensitive film comprises three pH indicator agents, and said three pH indicator agents are bromophenol blue, phenol red and bromocresol red purple. .
The wound infection degree monitoring system according to claim 9, wherein the bandage body comprises a cover layer, a drug layer and an adhesive layer, the cover layer is adhered to the drug layer, and the drug layer and the adhesive layer are pasted. ,among them:

The drug layer is provided with an adhesive strip for pasting the adhesive layer and a plurality of bumps including lysozyme, and the bump is disposed on a surface of the drug layer and the adhesive layer, the drug layer An adhesive strip is disposed on a peripheral edge of the surface of the drug layer and the adhesive layer, and the drug layer is an adhesive structure that can be peeled off from the adhesive layer;

The adhesive layer is provided with a plurality of meshes and an adhesive strip for sticking to the edge of the wound, and the adhesive strip of the adhesive layer is disposed on the peripheral edge of the surface of the adhesive layer, the adhesive layer and the drug layer When pasted, the bumps are embedded in the mesh, the bumps contacting the wound to sterilize the wound by lysozyme.
The wound infection level monitoring system of claim 10, further comprising a display device for prompting the user to replace the drug layer based on the degree of infection of the wound.
A method for monitoring wound infection degree using the wound infection degree monitoring system according to claim 1, wherein the method comprises the following steps:

The first light source generates light of a first wavelength;

Transmitting, by the fiber coupler, the first wavelength of light to the first multimode fiber of the smart sensor, the first wavelength of light passing through the single mode fiber to the second multimode fiber of the smart sensor;

When the photodiode receives the light of the first wavelength from the second multimode fiber of the smart sensor, generating a photocurrent when the light of the first wavelength illuminates the photodiode;

The processor calculates the absorption rate of the light of the first wavelength by the PH sensitive film according to the photocurrent generated by the light of the first wavelength, and determines the corresponding relationship between the PH value and the absorption rate. The pH value of the current wound; and

The processor determines the degree of infection of the current wound based on a predetermined correspondence between the pH value and the degree of infection of the wound.
The method for monitoring the degree of wound infection according to claim 12, wherein the body of the bandage comprises a cover layer, a drug layer and an adhesive layer, the cover layer is adhered to the drug layer, and the drug layer and the adhesive layer are pasted. ,among them:

The drug layer is provided with an adhesive strip for pasting the adhesive layer and a plurality of bumps including lysozyme, and the bump is disposed on a surface of the drug layer and the adhesive layer, the drug layer An adhesive strip is disposed on a peripheral edge of the surface of the drug layer and the adhesive layer, and the drug layer is an adhesive structure that can be peeled off from the adhesive layer;

The adhesive layer is provided with a plurality of meshes and an adhesive strip for sticking to the edge of the wound, and the adhesive strip of the adhesive layer is disposed on the peripheral edge of the surface of the adhesive layer, the adhesive layer and the drug layer When pasted, the bumps are embedded in the mesh, the bumps contacting the wound to sterilize the wound by lysozyme.
The method of monitoring the degree of wound infection according to claim 13, wherein the method further comprises the step of prompting the user to replace the drug layer by the display device according to the degree of infection of the current wound.