TWM458207U - Detectable wound dressing - Google Patents

Abstract

A wound dressing with detectability used in the surface of wounds. It includes a surface composite of film with pressure sensitive adhesive, a detection layer, a dressing layer to absorb exudates, and a releasable bottom layer. The detection layer changes color by contacting with the exudates. When the dressing layer becomes saturated, exudates permeate the detection layer and a color change thereof. The color change is visible and reminds users to replace a new wound dressing.

Description

Sensing wound dressing

The present invention relates to a sensory wound dressing, and more particularly to a medical dressing having a multi-layer structure, which is mainly applied to the wound surface of the skin, and uses the dressing material to absorb the color change after the exudate, and reminds the user to replace the dressing.

When the human skin is scratched, cut, burned, or lacerated, it needs to be protected with a medical grade dressing at the wound site, but the dressing has limited absorption rate for the exudate, especially when the wound has excessive exudate. Because it is in an excessively humid environment for a long time, it is prone to skin ulceration and even cause bacterial infection, which in turn causes secondary damage to the wound.

Traditional dressings such as gauze or bandages can scar the wound and require frequent replacement, which can easily lead to new tissue formation and damage to the wound. In recent years, it has been found that the process of wound healing requires a moderately moist environment, which can help cells to swim and make the skin grow smoothly. Therefore, a series of wet wound dressing products have been developed, including hydrocolloid dressing and foam dressing. And hydrogel dressing, etc. In the case of a higher water absorption rate water gel dressing, it can absorb physiological saline equivalent to 20 times its own weight, but it is still slightly insufficient when it encounters the initial stage of the wound or a large and deep wound, and the wet wound dressing is sucked. After wet, it affects its stickiness Sex, making it easy to fall off as the biggest drawback. In order to solve the above problems, complete this creation.

Therefore, the main purpose of this creation is to provide a sensory wound dressing that has a warning function that can be used to alert the exudate.

For the above purposes, the present sensing wound dressing (as shown in Figure 1) has a structural design comprising a surface layer of a film material, a lower surface coated with a pressure sensitive adhesive; and a sensing layer disposed on the surface layer. At the lower center; the wound contact layer is disposed under the sensing layer, and has the function of absorbing wound exudate; and a bottom layer is disposed under the wound contact layer, which is composed of a release paper or a release film.

The main purpose of this creation is to absorb the color change of the exudate after the sensing layer, and to remind the user to replace the dressing.

11‧‧‧ surface layer

12‧‧‧Sensor layer

13‧‧‧ wound contact layer

14‧‧‧ bottom layer

21‧‧‧Face

22‧‧‧Sensor layer

23‧‧‧ wound contact layer

24‧‧‧ bottom

Figure 1 is an embodiment of a creative sensing wound dressing.

Figure 2 is another embodiment of a creative sensing wound dressing.

In order to make the above-mentioned objects, features and advantages of the present invention more comprehensible, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings, which are described as follows: The sensing wound dressing of the present invention (such as 1)); the surface layer 11 is a film material, and the lower surface is coated with a pressure-sensitive adhesive; a sensing layer 12 is disposed at a central position below the surface layer, and the sensing layer is formed by dispersing the sensing molecules in the hydrogel; Below the test layer is a wound contact layer 13, which is composed of a hydrogel or a hydrophilic colloid; a bottom release paper or a release film 14 is disposed under the wound contact layer; that is, the four are bonded together and costly. Measurement Type wound dressing.

The surface film material of the artificial sensing type dressing may be a polyurethane (PU) film, a polyethylene (PE) film, a polyethylene terephthalate (PET) film or a polypropylene (PP) film.

The sensing layer film material of the artificial sensing type dressing may be gauze, woven fabric, non-woven fabric, paper, hydrogel layer or hydrophilic colloid layer. The hydrogel layer is composed of a hydrogel. Hydrogels include natural hydrogels and synthetic hydrogels. Natural hydrogels include gelatin, chitin, collagen, sodium alginate, and hyaluronic acid. Synthetic hydrogels include acrylic resins, silicone resins or polyurethane resins. Further, the hydrogel layer may be composed of a hydrogel and a gauze, a woven fabric, a non-woven fabric or paper.

The aforementioned sensing layer is formed by dispersing a sensing molecule in a thin film material, wherein the sensing molecule may be a moisture sensing agent such as cobalt chloride. pH indicators such as bromocresol purple, chlorophenol red, bromocresol blue, p-nitrophenol, azolitmin, phenolsulfonphthalein Neutral red staining solution, rosolic acid, o-cresolsulfonephthalein, α-naphtholphthalein, polar test agent such as 6-diphenyl- 4-(2,4,6-triphenyl-1-pyridinium)phenoxyl salt dye ( Reichardt's Dye ).

The wound contact layer material of the artificial sensing dressing may be gauze, woven fabric, non-woven fabric, paper, hydrogel layer or hydrophilic colloid layer. The hydrogel layer is composed of a hydrogel. Hydrogels include natural hydrogels and synthetic hydrogels. Natural hydrogels include gelatin, chitin, collagen, sodium alginate, and hyaluronic acid. Synthetic hydrogels include acrylic resins, silicone resins, and polyurethane resins. In addition, the hydrogel layer can also be composed of hydrogel and gauze, Woven, non-woven or paper.

The aforementioned hydrogel layer is formed by crosslinking and curing water, acrylic monomer, poly(ethylene glycol) acrylate, and glycerin.

The hydrophilic colloid layer component described above is obtained by crosslinking and solidifying white oil, sodium methylcarboxylate and an antioxidant such as 2,6-dibutyl-4-methylphenol (BHT).

The bottom layer of the artificial sensing type dressing is composed of a release paper or a release film. It can be in the form of a single piece or a double piece. The two-piece film is formed by overlapping or non-overlapping two left and right release papers or release films, and the contact portion has a form of folding or unfolding, which is convenient for the user to tear off.

As shown in Figures 1 and 2, this is the second aspect of the creative sensing wound dressing.

The operation steps of the present sensing type wound dressing are illustrated by the following figure in the first figure:

1. The underlying release paper 14 is torn off.

2. Attach the wound contact layer 13 to the wound first.

3. Apply pressure to the periphery of the surface layer 11, so that it is applied flat on the outside of the wound, that is, the operation is completed.

The sensing wound dressing of the present invention is compared with the traditional dressing. When the wound contact layer absorbs too much exudate to penetrate into the sensing layer, the sensing layer will change color to remind the user to replace it to avoid bacterial infection or skin ulceration of the wound. Etc.

In summary, the representative embodiments of the present invention can achieve the intended functions and purposes of the present invention, and the present invention has been described in detail so that it can be implemented by those skilled in the art. However, the above-mentioned representative embodiments are merely illustrative, and all modifications of equivalent structures and similar modifications that do not depart from the spirit of the present invention are within the scope of the present invention.

11‧‧‧ surface layer

12‧‧‧Sensor layer

13‧‧‧ wound contact layer

14‧‧‧ bottom layer

Claims (19)

A sensing type wound dressing comprises: a surface layer which is a film material, a lower surface of which is coated with a pressure sensitive adhesive; and a sensing layer is disposed at a central position below the surface layer to disperse the sensing molecules therein and absorb the same a color change occurs after the exudate to remind the user to replace the dressing; a wound contact layer is provided below the sensing layer for absorbing wound exudate; and a bottom layer is disposed under the wound contact layer by the release paper Or a release film. For example, in the sensing wound dressing of claim 1, wherein the film material of the surface layer may be a polyurethane (PU) film, a polyethylene (PE) film, a polyethylene terephthalate (PET) film or polypropylene ( PP) film. The sensing wound dressing of claim 1, wherein the sensing layer is gauze, woven fabric, non-woven fabric, paper, hydrogel layer or hydrophilic colloid. A sensing wound dressing according to item 3 of the patent application, wherein the hydrogel layer is formed by crosslinking a hydrogel. For example, the sensing wound dressing of claim 4, wherein the hydrogel is composed of gelatin, chitin, collagen, sodium alginate, hyaluronic acid, acrylic resin, silicone resin or polyurethane resin. A sensory wound dressing according to claim 3, wherein the hydrogel layer is composed of a hydrogel and gauze, woven fabric, non-woven fabric or paper. A sensing wound dressing according to claim 6 wherein the hydrogel is gelatin, chitin, collagen, sodium alginate, hyaluronic acid, acrylic resin, silicone resin or polyurethane resin. For its ingredients. The sensing wound dressing of claim 1, wherein the sensing layer may be gauze, woven fabric, non-woven fabric, paper, hydrogel layer or hydrophilic colloid. A sensing wound dressing according to claim 8 wherein the hydrogel layer is cured by cross-linking of the hydrogel. A sensing wound dressing according to claim 9 wherein the hydrogel is composed of gelatin, chitin, collagen, sodium alginate, hyaluronic acid, acrylic resin, silicone resin or polyurethane resin. A sensory wound dressing according to claim 8 wherein the hydrogel layer is composed of a hydrogel and a gauze, a woven fabric, a non-woven fabric or a paper. For example, the sensing type wound dressing of claim 11 wherein the hydrogel is composed of gelatin, chitin, collagen, sodium alginate, hyaluronic acid, acrylic resin, silicone resin or polyurethane resin. The sensing wound dressing of claim 8 wherein the sensing molecule of the sensing layer is a moisture sensing agent, a pH indicator or an extreme sensor. A sensing wound dressing according to claim 13 wherein the moisture sensing agent is cobalt chloride. For example, the sensing wound dressing of claim 13 wherein the pH indicator can be bromocresol purple, chlorophenol red, bromophenol blue, p-nitrophenol (p) -nitrophenol), azolitmin, phenolsulfonphthalein, neutral red staining solution, rosolic acid, o-cresolsulfonephthalein or alpha-naphtholphthalein (α-naphtholphthalein). The sensing type wound dressing according to claim 13 of the patent application, wherein the polar detecting agent is a 6-diphenyl-4-(2,4,6-triphenyl-1-pyridinium) phenoxide inner salt dye. ( Reichardt's Dye ). A sensing wound dressing according to claim 1, wherein the release paper or the release film may be in the form of a single piece or a double piece. For example, in the sensing type wound dressing of claim 17, wherein the two pieces are formed by two left and right release papers or a release film. For example, in the sensing type wound dressing of claim 17, wherein the two pieces are formed by overlapping two left and right release papers or release films, and the contact portions are in a form of folding or unfolding.