CN219148212U - Cellulose dressing - Google Patents

Abstract

The present utility model provides a cellulose dressing comprising: a backing layer; the bacterial cellulose liquid absorbing layer is arranged on the back lining layer and is of a three-dimensional net-shaped porous spongy structure; the self-adhesive hydrogel layer is arranged on the bacterial cellulose liquid absorbing layer; and the release layer is adhered to the self-adhesive hydrogel layer. The cellulose dressing provided by the utility model has strong waterproof, antibacterial and liquid absorbing capabilities, and can improve the satisfaction of users.

Description

Cellulose dressing

Technical Field

The utility model relates to the technical field of dressing supplies, in particular to a cellulose dressing.

Background

The self-adhesive wound dressing product is a passive product contacting the wound surface of a human body. The product is a functional dressing prepared by coating an adhesive on a fiber layer through a spot coating process, is required to have high liquid absorption and high antibacterial property, is used for treating wounds difficult to heal, and is especially used for treating wounds difficult to heal with high exudation and high potential infection risk.

The existing self-adhesive wound dressing has the following problems: 1. the liquid absorption capacity is not strong and is only about 6 times of the self weight; 2. the antibacterial agent has no or weak antibacterial property, and has no any killing or inhibiting effect on bacteria which are easy to grow on the wound surface and are difficult to heal, such as staphylococcus aureus, pseudomonas aeruginosa and other pathogenic bacteria.

Disclosure of Invention

The utility model provides a cellulose dressing, which solves the problems of low liquid absorption capacity, no bacteria or weak bacteria resistance of the dressing in the prior art.

In order to solve the above technical problems, the solution provided by the embodiment of the present utility model is as follows:

a cellulose dressing, comprising:

a backing layer;

the bacterial cellulose liquid absorbing layer is arranged on the back lining layer and is of a three-dimensional net-shaped porous spongy structure;

the self-adhesive hydrogel layer is arranged on the bacterial cellulose liquid absorbing layer;

and the release layer is adhered to the self-adhesive hydrogel layer.

Optionally, the bacterial cellulose liquid absorbing layer and the self-adhesive hydrogel layer are equal in area.

Optionally, the areas of the backing layer and the release layer are equal and larger than the area of the bacterial cellulose absorbent layer or the self-adhesive hydrogel layer.

Optionally, the area of the backing layer and the release layer is 2 times the area of the bacterial cellulose wicking layer or the self-adhesive hydrogel layer.

Optionally, the release layer includes:

the first release layer and the second release layer are arranged side by side with the first release layer;

the first release layer is provided with a first folded edge;

the second release layer is provided with a second folding edge which is attached to the first folding edge.

Optionally, the self-adhesive hydrogel layer is chitosan agar hydrogel; the chitosan agar hydrogel is coated on the bacterial cellulose liquid absorbing layer in a back-shaped mode to form a back-shaped hydrogel coating.

Optionally, the coating width of the reverse-square hydrogel coating is 0.5-1.5 mm, and the coating gap is 1.0-2.0 mm.

Optionally, the backing layer is a nonwoven fabric or a polyurethane film.

Optionally, the backing layer is coated with a pressure sensitive adhesive.

Optionally, the release layer is a glassine release paper.

The scheme of the utility model at least comprises the following beneficial effects:

the cellulose dressing provided by the scheme of the utility model comprises a back lining layer; the bacterial cellulose liquid absorbing layer is arranged on the back lining layer and is of a three-dimensional net-shaped porous spongy structure; the self-adhesive hydrogel layer is arranged on the bacterial cellulose liquid absorbing layer; and the release layer is adhered to the self-adhesive hydrogel layer, and the cellulose dressing has the advantages of simple integral structure, convenient use, strong liquid absorption capability, water resistance and bacteria resistance, can reduce the workload of operators and improves the satisfaction of users.

Drawings

FIG. 1 is a front view of a cellulose dressing provided by an embodiment of the present utility model;

fig. 2 is an exploded view of a cellulose dressing provided by an embodiment of the present utility model.

Reference numerals illustrate: 1. a backing layer; 2. bacterial cellulose liquid absorbing layer; 3. a self-adhesive hydrogel layer; 4. a release layer; 41. a first release layer; 411. a first hem; 42. a second release layer; 421. and a second flanging.

Detailed Description

Exemplary embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.

As shown in fig. 1, an embodiment of the present utility model proposes a cellulose dressing comprising:

a backing layer 1;

the bacterial cellulose liquid absorption layer 2 is arranged on the backing layer 1, and the bacterial cellulose liquid absorption layer 2 is of a three-dimensional net-shaped porous sponge-like structure;

a self-adhesive hydrogel layer 3 disposed on the bacterial cellulose absorbent layer 2;

and a release layer 4 bonded to the self-adhesive hydrogel layer 3.

In this embodiment, the backing layer 1, the bacterial cellulose absorbent layer 2, the self-adhesive hydrogel layer 3 and the release layer 4 are sequentially laminated; the backing layer 1, the bacterial cellulose liquid absorbing layer 2 and the self-adhesive hydrogel layer 3 are sequentially adhered and fixed, and the release layer 4 is adhered to the backing layer 1 and the self-adhesive hydrogel layer 3 in a stripping manner; before the cellulose dressing is used, the backing layer 1 and the release layer 4 play a role in protecting the bacterial cellulose absorbent layer 2 and the self-adhesive hydrogel layer 3; when the cellulose dressing is used, the release layer 4 is peeled off from the self-adhesive hydrogel layer 3, and the self-adhesive hydrogel layer 3 is attached to a wound surface on the skin of a user, so that the proper humidity and low-oxygen environment of the wound surface can be maintained;

the bacterial cellulose liquid absorption layer 2 is of a three-dimensional net-shaped porous spongy structure, the liquid absorption multiple of the bacterial cellulose liquid absorption layer is more than or equal to 50, the three-dimensional net-shaped porous spongy structure can rapidly absorb and lock seepage on a wound surface, a micro-wetting environment for wound healing can be maintained, and meanwhile, a certain buffer function is achieved, so that new granulation tissues are prevented from being subjected to secondary mechanical damage in a closed environment, and pain of patients is relieved; in addition, the three-dimensional reticular porous spongy structure can ensure that the cellulose dressing has good air permeability, water permeability and strong liquid absorption capacity, and the wound healing is accelerated;

the bacterial cellulose is a linear polymer formed by connecting a plurality of D-glucopyranosides through 1,4 glycosidic bonds.

In an alternative embodiment of the present utility model, the self-adhesive hydrogel layer 3 is chitosan agar hydrogel; the chitosan agar hydrogel is coated on the bacterial cellulose liquid absorbing layer 2 in a back-shaped mode to form a back-shaped hydrogel coating.

In the embodiment, the self-adhesive hydrogel layer 3 is chitosan agar hydrogel which has good biocompatibility, degradability and moisture retention, and the chitosan agar hydrogel is used as a wound dressing, so that the wound surface can be kept moist, exudates can be absorbed, the surface is smooth, adhesion is not easy, and wound granulation tissues are not damaged when changing the dressing;

the chitosan agar hydrogel is coated on the bacterial cellulose liquid absorbing layer 2 in a back-shaped manner, so that seepage on a wound surface can be ensured to be quickly transferred into the bacterial cellulose liquid absorbing layer 2; meanwhile, the chitosan component in the self-adhesive hydrogel layer 3 has excellent antibacterial property, the antibacterial rate of the self-adhesive hydrogel layer on escherichia coli, staphylococcus aureus, pseudomonas aeruginosa and hemolytic streptococcus is over 99.0 percent, pathogenic bacteria existing on a wound surface can be obviously inhibited or killed, and the hydrogel component in the self-adhesive hydrogel layer 3 can maintain proper humidity and low-oxygen environment of the wound surface, so that wound surface healing is promoted.

In an alternative embodiment of the utility model, the coating width of the reverse-character-shaped hydrogel coating is 0.5-1.5 mm, and the coating gap is 1.0-2.0 mm, so as to ensure that the seepage on the wound surface can be transferred uniformly and rapidly; more preferably, the coating width of the back-shaped hydrogel coating is 1.0mm, and the coating interval is 1.5mm.

In an alternative embodiment of the present utility model, the backing layer 1 is a nonwoven fabric or a polyurethane film.

In this embodiment, the backing layer 1 is a non-woven fabric or a polyurethane film, where the polyurethane film is colorless and transparent, so that an operator can observe whether the cellulose dressing changes color or not, so as to grasp the time of changing the cellulose dressing, and the wound healing of the user is facilitated.

In an alternative embodiment of the present utility model, the surface of the backing layer 1 is coated with a pressure sensitive adhesive; preferably, the hyposensitive adhesive may be an alpha-cyanoacrylate to reduce the chance of skin irritation to the user.

In an alternative embodiment of the present utility model, the release layer 4 is a glassine release paper.

In this embodiment, the release layer 4 is a glassine release paper, and the glassine release paper may be a monosilicon glassine release paper, which is compact, and can effectively protect the bacterial cellulose liquid absorbing layer 2 and the self-adhesive hydrogel layer 3 from extrusion deformation, pollution, and the like; at the same time, when the bacterial cellulose dressing is used, the release layer 4, the self-adhesive hydrogel layer 3 and the back lining layer 1 can be easily peeled off; preferably, the release layer 4 is 80g/m ² Shan Guige release paper.

In an alternative embodiment of the utility model, as shown in fig. 2, the bacterial cellulose wicking layer 2 and the self-adhesive hydrogel layer 3 are of equal area;

further, the areas of the backing layer 1 and the release layer 4 are equal and larger than the area of the bacterial cellulose liquid absorption layer 2 or the self-adhesive hydrogel layer 3;

in this embodiment, the area of the backing layer 1 is equal to that of the release layer 4, and is larger than that of the bacterial cellulose absorbent layer 2 or that of the self-adhesive hydrogel layer 3, so that the release layer 4 can fully protect the backing layer 1, the bacterial cellulose absorbent layer 2 and the self-adhesive hydrogel layer 3, protect the bacterial cellulose absorbent layer 2 and the self-adhesive hydrogel layer 3 from being damaged, and simultaneously protect the backing layer 1 from being clean, prevent the polluted backing layer 1 from contacting the skin or wound of a patient, and cause secondary infection to the wound, and simultaneously protect the backing layer 1 from losing viscosity, firmly adhere to the skin of the patient, and ensure that the bacterial cellulose absorbent layer 2 and the self-adhesive hydrogel layer 3 fully exert medical functions.

In an alternative embodiment of the present utility model, the area of the backing layer 1 and the release layer 4 is 2 times the area of the bacterial cellulose absorbent layer 2 or the self-adhesive hydrogel layer 3; preferably, the backing layer 1 and the release layer 4 have the same shape, so as to further strengthen the protection effect on the bacterial cellulose absorbent layer 2 and the self-adhesive hydrogel layer 3.

In an alternative embodiment of the present utility model, as shown in fig. 2, the backing layer 1 and the release layer 4 are both square, and four corners of the square of the backing layer 1 and the release layer 4 are provided with chamfers;

the square backing layer 1 and the release layer 4 can completely cover the wound of a patient and can be firmly adhered to the skin of the patient, the square four corners are provided with chamfers, the edges are arc-shaped, the use experience is improved, the situation of sharp corner stinging users is effectively avoided, and meanwhile, the chamfers are designed to avoid the situation that cellulose dressing is turned outwards from the four sharp corners, so that the cellulose dressing is not firmly adhered.

In an alternative embodiment of the present utility model, as shown in fig. 2, the release layer 4 includes:

a first release layer 41 and a second release layer 42 arranged side by side with the first release layer 41;

wherein the first release layer 41 has a first folding edge 411;

the second release layer 42 has a second folded edge 421 attached to the first folded edge 411.

In this embodiment, the first release layer 41 and the second release layer 42 have the same size and shape, and the first release layer 41 and the second release layer 42 are disposed on the self-adhesive hydrogel layer 3 side by side and are releasably adhered to the self-adhesive hydrogel layer 3;

and the first edge 411 of the first release layer 41 is attached to the second edge 421 of the second release layer 42, and the arrangement of the first edge 411 and the second edge 421 facilitates the user to peel off the release layer 4 and the self-adhesive hydrogel layer 3.

The cellulose dressing of the utility model, when in specific use: opening the inner packaging bag in a sterile operation, taking out the cellulose dressing, tearing off the release layer 4, attaching the self-adhesive hydrogel layer 3 to the wound surface part, and lightly pressing the back lining layer 1 to firmly combine the cellulose dressing with the wound surface;

according to the embodiment of the utility model, the backing layer, the bacterial cellulose liquid absorbing layer, the self-adhesive hydrogel layer and the release layer are arranged in a layer-by-layer manner, so that the whole dressing has a simple structure; the release layer is made of single-silicon glassine release paper, and the paper is compact, so that the dressing inner core structure can be effectively protected from extrusion deformation, pollution and the like; the self-adhesive hydrogel layer is coated on the bacterial cellulose liquid absorbing layer in a 'back' mode by adopting chitosan agar hydrogel, so that the seepage of a wound surface can be ensured to be quickly transferred into the bacterial cellulose liquid absorbing layer, wherein chitosan components have excellent antibacterial property, and the hydrogel components can maintain proper humidity and low-oxygen environment of the wound surface and accelerate the healing of the wound surface; the bacterial cellulose liquid absorbing layer 2 is of a three-dimensional reticular porous spongy structure, so that the liquid absorbing and waterproof antibacterial capabilities of the cellulose dressing are improved, the workload of nursing staff is further reduced, and the use satisfaction of users is improved.

While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the present utility model.

Claims (10)

1. A cellulose dressing, comprising:

a backing layer (1);

the bacterial cellulose liquid absorption layer (2) is arranged on the back lining layer (1), and the bacterial cellulose liquid absorption layer (2) is of a three-dimensional net-shaped porous spongy structure;

a self-adhesive hydrogel layer (3) arranged on the bacterial cellulose liquid absorption layer (2);

and a release layer (4) adhered to the self-adhesive hydrogel layer (3).

2. A cellulose dressing according to claim 1, characterized in that the bacterial cellulose absorbent layer (2) and the self-adhesive hydrogel layer (3) are of equal area.

3. The cellulose dressing according to claim 2, characterized in that the backing layer (1) and the release layer (4) are of equal area and larger than the area of the bacterial cellulose absorbent layer (2) or the self-adhesive hydrogel layer (3).

4. A cellulose dressing according to claim 3, characterized in that the area of the backing layer (1) and release layer (4) is 2 times the area of the bacterial cellulose absorbent layer (2) or the self-adhesive hydrogel layer (3).

5. The cellulose dressing as claimed in claim 1, characterized in that the release layer (4) comprises:

a first release layer (41) and a second release layer (42) arranged side by side with the first release layer (41);

wherein the first release layer (41) is provided with a first folded edge (411);

the second release layer (42) is provided with a second folded edge (421) which is attached to the first folded edge (411).

6. The cellulose dressing according to claim 1, characterized in that the self-adhesive hydrogel layer (3) is a chitosan agar hydrogel; the chitosan agar hydrogel is coated on the bacterial cellulose liquid absorption layer (2) in a back-shaped mode to form a back-shaped hydrogel coating.

7. The cellulose dressing of claim 6, wherein the coating width of the back-shaped hydrogel coating is 0.5-1.5 mm and the coating gap is 1.0-2.0 mm.

8. A cellulose dressing according to claim 1, characterized in that the backing layer (1) is a nonwoven or polyurethane film.

9. A cellulose dressing according to claim 1, characterized in that the backing layer (1) is coated with a pressure sensitive adhesive.

10. Cellulose dressing according to claim 1, characterized in that the release layer (4) is a glassine release paper.

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