CN210019931U

CN210019931U - Wound dressing with indication function

Info

Publication number: CN210019931U
Application number: CN201822123863.4U
Authority: CN
Inventors: 陈孟专; 谭国斌
Original assignee: Star Of Life International Ltd By Share Ltd
Current assignee: Star Of Life International Ltd By Share Ltd
Priority date: 2018-12-18
Filing date: 2018-12-18
Publication date: 2020-02-07
Anticipated expiration: 2028-12-18

Abstract

If a user does not properly replace a new wound dressing with a commercially available wound dressing (e.g., OK bandage) while covering his/her wound with it, the dressing layer of the wound dressing may absorb too much tissue fluid (exudate), which may lead to wound re-infection. In view of the above, the present invention particularly provides a wound dressing with indication function composed of a substrate, a sensing layer and a dressing layer. When the wound dressing with the indicating function is applied, a wound on the skin is covered by the dressing layer; and then, when the tissue fluid of the wound seeps out of the dressing layer and enters the sensing layer, the sensing layer sends out a dressing change indication in a mode of displaying at least one color, at least one character or at least one pattern. Therefore, the user or the medical staff can accurately master the change time point of the wound dressing through the dressing change instruction.

Description

Wound dressing with indication function

Technical Field

The present invention relates to the field of Wound dressings (Wound dressing), and more particularly, to a Wound dressing with indication function.

Background

According to a narrowly defined definition, a wound is an injury to skin tissue. It is well known that under conditions where the body's own blood clotting functions properly, bleeding from skin wounds can be coagulated by platelets; however, for persons with poor blood clotting functions, it is desirable to use a hemostatic product to stop the continued bleeding from a skin wound. The direct compression hemostasis method and the tourniquet hemostasis method are two most commonly used hemostasis methods; the direct pressure hemostasis method is specifically implemented by covering a skin wound with a dressing and applying pressure to the skin wound through the dressing to prevent the wound from bleeding continuously. The commercially available OK bandage is a wound dressing using direct compression hemostasis.

Fig. 1 shows a perspective exploded view of a prior art wound dressing. As shown in fig. 1, the conventional wound dressing 1' mainly includes in structure: a substrate 10 'and a coating layer 11';

wherein, the dressing layer 11 'is disposed on the surface of the substrate 10', and the substrate 10 'is covered with an adhesive layer 12'. On the other hand, two release films 13 ' are coated on the substrate 10 ' and adjacent to two sides of the dressing layer 11 '. The wound dressing 1' is very simple to use. Firstly, the two release films 13' must be torn off; then, after covering the wound on the skin with the dressing layer 11 ', the adhesive layer 12' on the surface of the base material 10 'is pressed against the skin by pressing the bottom surface of the base material 10'.

Even though the conventional wound dressing 1 'has the advantages of simple structure and easy use, the inventor of the present invention has learned that similar wound dressings 1' exhibit the following defects and shortcomings in practical use based on the experience of designing wound dressings for years and the feedback information of users:

(1) if the user does not properly replace the wound dressing 1 ' with a new one after covering his/her wound or wound with this wound dressing 1 ', if the dressing layer 11 ' has already absorbed too much tissue fluid (exudate), there is a possibility that reinfection of the wound may occur.

(2) In view of the above, if the user peels off the wound dressing 1 'from the skin with the dressing layer 11' that has absorbed too much tissue fluid having dried, secondary injury to the wound may be caused by the adhesion of tissue fluid, blood clots, or scabs.

It can be seen from the above description that it is necessary to redesign the wound dressing to have the special function of indicating the time of replacement, so as to effectively avoid the situations described in the above points 1 and 2 during the process of using the wound dressing. In view of the above, the inventors of the present invention have made intensive studies and creation, and finally, have developed a novel wound dressing with indication function.

SUMMERY OF THE UTILITY MODEL

The main objective of the present invention is to provide a wound dressing with indication function, which mainly comprises a substrate, a sensing layer, and a dressing layer. When the wound dressing with the indicating function is applied, a wound on the skin is covered by the dressing layer; and then, when the tissue fluid of the wound seeps out of the dressing layer and enters the sensing layer, the sensing layer sends out a dressing change indication in a mode of displaying at least one color, at least one character or at least one pattern. Therefore, the user or the medical staff can accurately master the change time point of the wound dressing through the dressing change instruction.

To achieve the above-mentioned objective of the present invention, the present inventors provide an embodiment of the wound dressing with indication function, which includes:

a substrate;

a sensing layer disposed on the surface of the substrate; and

a dressing layer arranged on the sensing layer for covering a wound;

when the tissue fluid of the wound seeps out of the dressing layer and enters the sensing layer, the sensing layer sends out a dressing change indication in a mode of displaying at least one color, at least one character or at least one pattern.

In an embodiment of the novel indicating wound dressing, the sensing layer is litmus paper.

In an embodiment of the present novel indicative function wound dressing, the sensing layer comprises:

a supporter having a plurality of holes; and

a sensing agent permeating into the supporter through the plurality of holes.

Drawings

FIG. 1 is an exploded perspective view of a prior art wound dressing;

FIG. 2 shows a first exploded perspective view of an indicating wound dressing of the present invention;

FIG. 3 shows an exemplary application diagram of the novel indicating wound dressing;

FIG. 4 shows a second exploded perspective view of the novel indicating wound dressing;

FIG. 5 shows a perspective view of a substrate;

FIG. 6 shows a perspective view of a substrate;

FIG. 7 shows an exploded perspective view of a sensing layer; and

figure 8 shows a perspective view of the dressing layer.

The main symbols in the figures illustrate:

1 wound dressing with indication function

10 base material

11 sensing layer

12 dressing layer

DRI dressing change indication

14 adhesive layer

15 release film

100 transparent region

101 exposure port

102 pore space

111 support

112 sensing agent

121 bottom layer

122 wound contact layer

1' wound dressing

10' base material

11' dressing layer

12' adhesive layer

13' Release film

Detailed Description

In order to more clearly describe the wound dressing with indication function proposed by the present invention, the following description will be made in detail with reference to the drawings.

Referring to fig. 2, a first exploded perspective view of the wound dressing with indication function of the present invention is shown. Referring also to fig. 3, an exemplary application of the novel indicating wound dressing is shown. As shown in fig. 2, the novel indicative wound dressing 1 mainly includes in structure: a substrate 10, a sensing layer 11, and a dressing layer 12; the sensing layer 11 is disposed on the surface of the substrate 10, and the dressing layer 12 is disposed on the sensing layer 11. In practical application of the novel wound dressing 1 with indication function, the dressing layer 12 is used to cover a wound or a cut on the skin of a human body. As shown in FIGS. 2 and 3, when the tissue fluid of the wound oozes out of the dressing layer 12 and enters the sensing layer 11, the sensing layer 11 emits a dressing change indicator DRI by displaying at least one color, at least one text, or at least one pattern.

Referring to fig. 4, a second exploded perspective view of the novel indicating wound dressing is shown. In order to facilitate the user to cover the wound or the open wound with the novel wound dressing 1 with indication function, as shown in fig. 4, an adhesive layer 14 is particularly coated on the surface of the substrate 10, and two release films 15 are coated on the substrate 10 and are adjacent to two side edges of the sensing layer 11. In brief, to cover a wound with the novel indicating wound dressing 1, the release film 15 must be removed; then, after the wound on the skin is covered by the dressing layer 12, the adhesive layer 14 on the surface of the base material 10 can be attached to the skin by pressing the bottom surface of the base material 10, thereby completing the procedure of covering the wound with the novel wound dressing 1 with indication function.

It should be noted that fig. 2 and 3 show that the bottom surface of the substrate 10 is provided with a transparent area 100, so that the dressing change indication DRI emitted from the sensing layer 11 can be easily displayed through the transparent area 100. Of course, by appropriate design changes to the configuration of the substrate 10, the dressing change indication DRI emitted by the sensing layer 11 can be made to be displayed in different ways. Fig. 5 and 6 both show perspective views of the substrate. In fig. 5, an exposing hole 101 is formed on the bottom surface of the substrate 10 to expose a portion of the sensing layer 11. It is contemplated that when the tissue fluid of the wound seeps out of the dressing layer 12 and into the sensing layer 11, the sensing layer 11 will display a dressing change indication DRI by way of a color, text or pattern display, and the dressing change indication DRI will be displayed through the exposure opening 101. On the other hand, fig. 6 shows that the substrate 10 is a sheet body with a plurality of apertures 102 woven from a plurality of yarns; thus, when the sensing layer 11 emits the dressing change indication DRI by display of color, text or pattern, the dressing change indication DRI is partially displayed through the plurality of apertures 102.

Fig. 7 shows an exploded perspective view of the sensing layer. In the present invention, the simplest embodiment of the sensing layer 11 is litmus paper. However, in some specific applications, the sensing layer 11 may include a support 111 and a sensing agent 112; the carrier 111 is a porous object, such as paper, a polymer fiber integrated body, a natural fiber integrated body, a combination of any two of the above, or a combination of the above three. It is understood that by immersing the carrier 111 in the sensing agent 112, the sensing agent 112 can penetrate into the carrier 111 through the plurality of holes. The present invention is not particularly limited to the kind of the sensing agent 112, which may be a moisture sensing agent, a pH indicator, or a polar sensing agent. The following table (1) exemplarily lists materials of the sensing agents 112 that are commonly used.

Watch (1)

With continuing reference to fig. 2 and 3, and with concurrent reference to fig. 8, a perspective view of the dressing layer is shown. In the present invention, the simplest embodiment of the dressing layer 12 is a fibroin layer. However, in some specific applications, the dressing layer 12 may include a bottom layer 121 connected to the sensing layer 11 and a wound contact layer 122 for covering the wound. In particular, the bottom layer 121 may be paper, a polymer fiber-integrated body, a natural fiber-integrated body, a combination of any two of the above, or a combination of the three. In another aspect, the wound contact layer 122 may be a calcium-degraded natural fiber integrated body or a calcium-degraded natural fiber and polymer fiber integrated body. For example, a fibroin layer and a Calcium-degraded fibroin layer (Calcium-degraded silk layer) can be used as the bottom layer 121 and the wound contact layer 122, respectively.

Further, a wound healing promoter may be impregnated into the fibroin layer (i.e., the base layer 121) and/or the calcium-degraded fibroin layer (i.e., the wound contact layer 122) during the process of manufacturing the dressing layer 12 in such a manner as to impart the dressing layer 12 with an effect of promoting wound healing, the present invention is not particularly limited to the kind of the wound healing promoter, which may be a combination of chrorphine diacetate (CHLORHEXIDIACETE), silver ions, hesperidin-containing orange peel extract, Gastrodia elata extract containing Gastrodia elata glycoside, citrus polyphenol, a combination of hyaluronic acid and at least one vitamin, a weever extract, a combination of a α -helix (α -helix) peptide and a short-winner peptide, a post-immortal jellyfish extract, solarin-like extract, a saussurea involucrata extract, a 4,7-dimethoxy-5-methyl-1,3-benzodioxole (4, 7-dimethoxy-5-1, 3-benzodiazepine extract, a plant extract, a glehnia extract, a glechoma extract, a plant.

Thus, the structural composition of the novel indicating wound dressing is fully and clearly described above; moreover, the present invention has the following advantages as follows:

(1) if a new wound dressing is not properly replaced while the dressing layer of the wound dressing is absorbing too much tissue fluid (exudate) during the process of covering the wound with a commercially available wound dressing (e.g., OK bandage), there is a possibility that the wound may be re-infected. In view of the above, the present invention particularly provides a wound dressing with indication function composed of a substrate, a sensing layer and a dressing layer. When the wound dressing with the indicating function is applied, a wound on the skin is covered by the dressing layer. And then, when the tissue fluid of the wound seeps out of the dressing layer and enters the sensing layer, the sensing layer sends out a dressing change indication in a mode of displaying at least one color, at least one character or at least one pattern. Therefore, the user or the medical staff can accurately master the change time point of the wound dressing through the dressing change instruction.

It should be emphasized that the above detailed description is specific to possible embodiments of the present invention, but this is not intended to limit the scope of the invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.

Claims

1. An indicating function wound dressing comprising:

a substrate;

a sensing layer disposed on the surface of the substrate; and

a dressing layer arranged on the sensing layer for covering a wound;

2. The indicating wound dressing of claim 1, wherein the bottom surface of the substrate defines an exposure opening for exposing a portion of the sensing layer.

3. The indicating wound dressing of claim 1, wherein the bottom surface of the substrate is provided with a transparent area, such that the color, the text, or the pattern can be displayed through the transparent area.

4. The indicating wound dressing of claim 1, wherein the substrate is a sheet with a plurality of apertures woven from a plurality of yarns, such that the color, the text, or the pattern can be partially displayed through the plurality of apertures.

5. The indicating wound dressing of claim 1, wherein the sensing layer is litmus paper.

6. The indicating wound dressing of claim 1, wherein the sensing layer comprises:

a supporter having a plurality of holes; and

a sensing agent permeating into the supporter through the plurality of holes.

7. The functionally-indicating wound dressing of claim 1, wherein the dressing layer comprises a bottom layer connected to the sensing layer and a wound contact layer for covering the wound.

8. The indicating wound dressing of claim 1, wherein the surface of the substrate is covered with an adhesive layer, and two release films are covered on the substrate and adjacent to two sides of the sensing layer.

9. The indicating wound dressing of claim 7, wherein the wound contact layer is a calcium-degraded natural fiber integrated body or a calcium-degraded natural fiber and polymer fiber integrated body.

10. The indicating wound dressing of claim 7, wherein the bottom layer is a fibroin layer and the wound contact layer is a calcium-degraded fibroin layer.

11. The indicating wound dressing according to claim 7, wherein a wound healing promoting agent is impregnated into the fibroin layer and/or the calcium-degraded fibroin layer.