CN117045432A

CN117045432A - Foam dressing capable of applying direct-current electric field, and device and method for promoting skin wound healing

Info

Publication number: CN117045432A
Application number: CN202311010383.6A
Authority: CN
Inventors: 王良
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-08-11
Filing date: 2023-08-11
Publication date: 2023-11-14

Abstract

The invention relates to the technical field of wound healing, in particular to a foam dressing capable of applying a direct-current electric field, and a device and a method for promoting skin wound healing. The foam dressing sequentially comprises a wound contact layer, a conductive layer, an absorption retention layer and a backing layer; the conductive layer is provided with a buckle plug which penetrates through the absorption retention layer and the backing layer and is used for being communicated with a component capable of applying a direct current electric field. The foam dressing can utilize direct current to perform the functions of diminishing inflammation, easing pain, softening scar and the like on the wound, and promote the wound to heal more quickly; the dressing can not only seal the wound and absorb the seepage and provide the effect of wet healing environment, but also provide a stable direct current electric field for the wound; and the layer structure is simple, can realize disposable application and use, need not to apply separately, has effectively simplified the use.

Description

Foam dressing capable of applying direct-current electric field, and device and method for promoting skin wound healing

Technical Field

The invention relates to the technical field of wound healing, in particular to a foam dressing capable of applying a direct-current electric field, and a device and a method for promoting skin wound healing.

Background

Various products for promoting wound healing in the current market mainly aim at wounds with more seepage and deeper wounds, or provide moist environments for wounds such as burns, skin areas and the like, and the functional research and development of the products are mainly focused on the aspects of accelerating healing and preventing the wounds from being polluted.

However, during the wound healing process, there are often problems of inflammation and pain, and these complications have a negative effect on wound healing, so that it is difficult to significantly increase the wound healing speed of these products in practical use. In addition, after wound healing, scars are present and these products have poor prophylactic effects on scars.

In the prior art, products for promoting wound healing by combining electrification and dressing are available, but the products have complex structures, are inconvenient to use and are not beneficial to popularization and use.

Disclosure of Invention

The invention aims to provide a foam dressing capable of applying a direct-current electric field, and a device and a method for promoting skin wound healing.

The technical scheme for solving the technical problems is as follows:

the invention provides a foam dressing capable of applying a direct-current electric field, which sequentially comprises a wound contact layer, a conductive layer, an absorption retention layer and a backing layer; the conductive layer is provided with a buckle plug which penetrates through the absorption retention layer and the backing layer and is used for being communicated with a component capable of applying a direct current electric field.

Further, a plurality of seepage absorbing holes are respectively formed in the wound contact layer and the conductive layer, and the positions of the seepage absorbing holes in the wound contact layer and the conductive layer are in one-to-one correspondence.

Further, the pore diameter of the liquid-permeable absorbing pore is 1-1.5 mm, and the center distance between two adjacent liquid-permeable absorbing pores is 4.5-5.5 mm.

Further, the material of the wound contact layer is silicone.

Further, the absorbing retention layer is made of polyurethane, and the backing layer is made of polyurethane.

Further, the thickness of the wound contact layer is 0.1-1 mm, the thickness of the conductive layer is 0.1-1 mm, the thickness of the absorbing retention layer is 3-4 mm, and the thickness of the backing layer is 0.1-1 mm.

The invention also provides a preparation method of the foam dressing, which comprises the steps of adhering the wound contact layer to one side of the conductive layer, thermally pressing and fixing the absorption retention layer to the other side of the conductive layer, and thermally pressing and fixing the backing layer to the absorption retention layer.

The present invention also provides a device for promoting healing of a skin wound comprising a foam dressing and an assembly to which a DC electric field can be applied; the foam dressing is the foam dressing, and the component capable of applying a direct current electric field is electrically connected with the buckle plug;

the component capable of applying the direct current electric field comprises a negative electrode patch and a direct current power supply; the positive pole of DC power supply with buckle plug electricity is connected, the negative pole with negative pole paster electricity is connected, the negative pole paster is used for attaching on skin.

The invention also provides a method for promoting skin wound healing, which is implemented by the device.

The beneficial effects of the invention are as follows:

(1) The foam dressing capable of applying the direct-current electric field can utilize the direct-current electric field to perform the functions of diminishing inflammation, easing pain, softening scars and the like on wounds, and promote the wounds to heal more quickly;

(2) The foam dressing capable of applying the direct current electric field can not only seal wounds, absorb seepage and provide the effect of a wet healing environment, but also provide a stable direct current electric field for the wounds; the buckle plug penetrating through the absorption retention layer and the backing layer is arranged on the conductive layer, so that the conductive layer can be conveniently communicated with a component capable of applying a direct current electric field, and the practical use is further facilitated;

(3) The foam dressing capable of applying the direct-current electric field has a simple layer structure, can be applied once, does not need to be applied to multiple layers respectively, and effectively simplifies the use mode.

Drawings

FIG. 1 is a schematic diagram of the construction of a foam dressing of the present invention capable of applying a DC electric field;

fig. 2 is a schematic structural view of a conductive layer in the foam dressing capable of applying a dc electric field according to the present invention.

In the drawings, the list of components represented by the various numbers is as follows:

1. a wound contact layer; 2. a conductive layer; 21. a buckle plug; 3. an absorptive retention layer; 4. a backing layer.

Detailed Description

The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.

As shown in fig. 1 and 2, the foam dressing capable of applying a direct current electric field of the present invention comprises a wound contact layer 1, a conductive layer 2, an absorbing retention layer 3 and a backing layer 4 in this order; the conductive layer 2 is provided with a buckle plug 21, and the buckle plug 21 penetrates through the retention absorbing layer 3 and the backing layer 4 and is used for communicating with a component capable of applying a direct current electric field.

According to the foam dressing capable of applying the direct-current electric field, the conductive layer 2 is added, so that the foam dressing generates conductive capacity after contacting or absorbing seepage, and after the foam dressing is communicated with a component capable of applying the direct-current electric field, the effects of diminishing inflammation, easing pain, softening scars and the like on wounds can be achieved by utilizing the direct-current electric field, and the wounds can be promoted to heal more quickly; not only can close the wound and absorb the seepage, but also can provide a stable direct current electric field for the wound. The buckle plug 21 penetrating through the absorption retention layer 3 and the backing layer 4 is arranged on the conductive layer 2, so that the conductive layer 2 can be conveniently communicated with a component capable of applying a direct current electric field, and the practical use is further facilitated.

By utilizing the product, the synergistic effect of wet healing and tissue repair promotion by an electric field can be realized, and the foam dressing can be used for sealing wounds, absorbing a large amount of seepage and providing a wet healing environment; but also promote the growth of epidermis and contents by a direct current electric field to promote the wound healing speed and reduce scar generation.

In addition, the foam dressing capable of applying the direct-current electric field has a simple layer structure, can be applied once, does not need to be applied to multiple layers respectively, and effectively simplifies the use mode.

Preferably, a plurality of seepage absorbing holes are respectively arranged on the wound contact layer 1 and the conductive layer 2, and the positions of the seepage absorbing holes on the wound contact layer 1 and the conductive layer 2 are in one-to-one correspondence; the seepage absorption holes are formed in the wound contact layer 1 and the conductive layer 2, so that the transfer of wound seepage can be promoted, and the wound seepage can be contacted with the conductive layer 2 through the wound contact layer 1 more quickly, and the conductive efficiency is improved.

Preferably, the aperture of the liquid-permeable absorbing holes is 1-1.5 mm, and the center distance between two adjacent liquid-permeable absorbing holes is 4.5-5.5 mm; the aperture and the distance can ensure that the liquid seepage is fully absorbed, and the performance of the conductive layer 2 can be ensured to be stable, because the amount of the liquid seepage of the wound is not great, if the aperture and the hole spacing of the liquid seepage absorbing holes are too large, the liquid seepage absorbing effect is uneven, the integral effect of the current on the wound is affected, and if the aperture and the hole spacing of the liquid seepage absorbing holes are too small, the liquid seepage absorbing capacity is insufficient, the conductive effect is reduced, and some liquid seepage is retained and deposited between the skin and the wound contact layer 1, so that the wound healing is negatively affected.

Preferably, the material of the wound contact layer 1 is silicone. The common adhesive component of the dressing at present is mainly acid adhesive, the adhesive has great damage to skin and no conductivity, skin allergy is easy to cause when the dressing is applied, and the normal skin is damaged when the dressing is torn off; the present invention thus uses silicone as the material of the wound contact layer 1, which composition is skin friendly.

Preferably, the absorbing and retaining layer 3 is made of polyurethane, and polyurethane is used as the material of the absorbing and retaining layer 3, so that wound exudate can be well absorbed and retained.

Preferably, the backing layer 4 is made of polyurethane; the polyurethane material is used as the material of the backing layer 4, so that the outside moisture and pollutants can be effectively isolated, and meanwhile, the seepage liquid can be evaporated in a gas form, so that the wound is ensured to be clean and the proper humidity is ensured.

Preferably, the conductive layer 2 is made of a metal material which is conductive and harmless to the human body, such as copper, aluminum, stainless steel, etc.

Preferably, the thickness of the wound contact layer 1 is 0.1-1 mm, the thickness of the conductive layer 2 is 0.1-1 mm, the thickness of the absorbent retention layer 3 is 3-4 mm, and the thickness of the backing layer 4 is 0.1-1 mm.

The preparation method of the foam dressing comprises the steps of adhering the wound contact layer 1 to one side of the conductive layer 2, then fixing the absorption retention layer 3 to the other side of the conductive layer 2 in a hot pressing mode, and finally fixing the backing layer 4 to the absorption retention layer 3 in a hot pressing mode.

The wound contact layer 1 is first bonded to the conductive layer 2 so that the two can be well mated. And the absorption retention layer 3 and the backing layer 4 are respectively fixed in a hot pressing mode, so that the firmness between layers can be ensured, and the problem of falling off in the using process is prevented.

When the seepage absorbing holes are formed in the wound contact layer 1 and the conductive layer 2, holes can be punched in the corresponding positions of the wound contact layer 1 and the conductive layer 2 respectively, then the two layers are bonded, or the two layers can be bonded first, and then the holes are punched. The mode of bonding before punching is adopted, so that the two layers of seepage absorption holes can be matched better.

The device for promoting skin wound healing comprises a foam dressing and an assembly capable of applying a direct current electric field; the foam dressing is the foam dressing, and the component capable of applying a direct current electric field is electrically connected with the buckle plug 21; the component capable of applying the direct current electric field comprises a negative electrode patch and a direct current power supply; the positive pole of DC power supply is connected with buckle plug 21 electricity, and the negative pole is connected with negative pole paster electricity, and the negative pole paster is used for attaching on the skin.

Specifically, when the skin wound protective device is used, the foam dressing is firstly applied to and completely covers the skin wound, then the negative electrode patch is applied to the skin around the skin wound, and the direct current power supply is started. The voltage of the direct current power supply is 10V-25V, and the current intensity is 10-20mA.

The invention is illustrated by the following specific examples.

Examples

The experimental subject of this example is a pig. The experimental mode is that after the artificial wound with similar area is manufactured on the pig body, the experimental group adopts the device for promoting the skin wound to heal, and the control group is completely treated in a conventional mode, namely only dressing for healing is applied.

The experimental group of this example was embodied by selecting a foam dressing 1-2cm larger than the wound periphery after the wound was completely cleaned, and completely covering the application and wound site. After application, the snap-in plug 21 of the conductive layer 2 is exposed.

After the foam dressing is applied, the negative electrode patch is applied to the skin surrounding the wound. The positive electrode of the external direct current power supply is connected with the buckle plug 21, and the negative electrode is connected with the negative electrode patch. At this time, the direct current power supply is connected to form a direct current loop between the wound and the surrounding environment, and the foam dressing can fulfill the purposes of applying a direct current electric field and sealing the wound to create a wet healing environment.

In the use process, the voltage is 15V, and the current intensity is 15mA. In this example, the foam dressing was used for two weeks, and after application, the wound was observed to accelerate wound healing in the experimental group, 40% of the wound was completely healed, and none of the control group was completely healed. .

The method is continued until the wounds of the experimental group and the control group are completely healed, and the healed wounds are observed to find that the surfaces of the wounds of the experimental group are smooth and the colors of the wounds are similar to the colors of surrounding skin; the wound surface of the control group is proliferated to a certain extent, and the color of the wound surface is slightly darker than that of the surrounding skin, which indicates that the wound surface of the control group heals to generate obvious scars.

According to the embodiment, the synergistic effect of wet healing and tissue repair promotion by an electric field can be realized, and the foam dressing can be used for sealing wounds, absorbing a large amount of seepage and providing a wet healing environment; but also can promote the growth of epidermis and contents through a direct current electric field, reduce scar generation, and further promote the healing speed and quality of wounds.

In the description of the present invention, it should be noted that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying a number of technical features which is being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

1. A foam dressing capable of applying a direct current electric field, which is characterized by comprising a wound contact layer (1), a conductive layer (2), an absorption retention layer (3) and a backing layer (4) in sequence; the conductive layer (2) is provided with a buckle plug (21), and the buckle plug (21) penetrates through the absorption retention layer (3) and the backing layer (4) and is used for being communicated with a component capable of applying a direct current electric field.

2. A foam dressing to which a direct current electric field can be applied according to claim 1, wherein a plurality of liquid-permeable absorbing holes are respectively arranged on the wound contact layer (1) and the conductive layer (2), and the positions of the liquid-permeable absorbing holes on the wound contact layer (1) and the conductive layer (2) are in one-to-one correspondence.

3. A foam dressing to which a direct current field can be applied according to claim 2, wherein the pore size of the liquid-permeable absorbing pores is 1-1.5 mm, and the center distance between two adjacent liquid-permeable absorbing pores is 4.5-5.5 mm.

4. A foam dressing to which a direct current electric field can be applied according to any one of claims 1-3, characterized in that the material of the wound contact layer (1) is silicone.

5. A foam dressing capable of applying a direct current field according to any one of claims 1-3, characterized in that the absorbing retention layer (3) is of polyurethane material and the backing layer (4) is of polyurethane material.

6. A foam dressing to which a direct current electric field can be applied according to any one of claims 1-3, characterized in that the thickness of the wound contact layer (1) is 0.1-1 mm, the thickness of the conductive layer (2) is 0.1-1 mm, the thickness of the absorbing retention layer (3) is 3-4 mm, and the thickness of the backing layer (4) is 0.1-1 mm.

7. A method of preparing a foam dressing according to any one of claims 1-6, wherein the wound contact layer (1) is bonded to one side of the conductive layer (2), the absorbent retention layer (3) is heat-pressed to the other side of the conductive layer (2), and finally the backing layer (4) is heat-pressed to the absorbent retention layer (3).

8. A device for promoting healing of a skin wound, comprising a foam dressing and an assembly to which a direct current electric field can be applied; the foam dressing according to any one of claims 1-6, wherein the component to which a direct current electric field can be applied is electrically connected to the snap plug (21);

the component capable of applying the direct current electric field comprises a negative electrode patch and a direct current power supply; the positive pole of DC power supply with buckle plug (21) electricity is connected, the negative pole with negative pole paster electricity is connected, the negative pole paster is used for attaching on skin.

9. A method of promoting healing of a skin wound, wherein the method is performed using the device of claim 8.