CN216169067U - Foam dressing - Google Patents

Abstract

The utility model discloses a foam dressing which comprises a protective layer, a polyurethane layer, a pressure-sensitive adhesive layer, a dressing layer and a release layer which are sequentially arranged; the polyurethane layer is 15um ~ 25um transparent polyurethane film, be equipped with the through-hole on the pressure sensitive adhesive layer, the sandwich layer is polyurethane foam, be equipped with a plurality of aperture on the polyurethane foam, be equipped with the aquogel granule in the aperture. The foam dressing disclosed by the utility model is simple in structure and convenient to use, and through the arrangement of the hydrophilic polyurethane foam, foam holes are fine and smooth, so that the new granulation is prevented from growing into the foam holes, and meanwhile, the foam dressing is not adhered to wounds; and the drug-loaded hydrogel particles in the polyurethane foam can continuously and uniformly release bacteriostatic and analgesic drug components to the wound part, prevent wound infection and reduce pain of patients during treatment.

Description

Foam dressing

Technical Field

The utility model relates to the technical field of dressings, in particular to a foam dressing.

Background

The foam dressing is a functional dressing and is used for the seepage management of wounds. Compared with common gauze, oil gauze and the like, the polyurethane film on the surface layer of the foam dressing has a waterproof and antibacterial function, the foam layer of the dressing core can maintain a wet environment at a wound after absorbing seepage and promote the healing of the wound, and the softness of the foam is also suitable for a patient lying in bed and is pasted on the sacral tail part, the hip part and other parts to play a role in preventing and treating pressure sores;

currently, the foam dressing is easy to stick to the wound during the application process, and the situation of wound infection can occur.

Based on the above situation, the present invention provides a foam dressing, which can effectively solve one or more of the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a foam dressing. The foam dressing disclosed by the utility model is simple in structure and convenient to use, and through the arrangement of the hydrophilic polyurethane foam, foam holes are fine and smooth, so that the new granulation is prevented from growing into the foam holes, and meanwhile, the foam dressing is not adhered to wounds; and the drug-loaded hydrogel particles in the polyurethane foam can continuously and uniformly release bacteriostatic and analgesic drug components to the wound part, prevent wound infection and reduce pain of patients during treatment.

The utility model is realized by the following technical scheme:

a foam dressing comprises a protective layer, a polyurethane layer, a pressure-sensitive adhesive layer, a dressing layer and a release layer which are sequentially arranged;

the polyurethane layer is 15um ~ 25um transparent polyurethane film, be equipped with the through-hole on the pressure sensitive adhesive layer, the sandwich layer is polyurethane foam, be equipped with a plurality of aperture on the polyurethane foam, be equipped with the aquogel granule in the aperture.

The utility model aims to provide a foam dressing. The foam dressing disclosed by the utility model is simple in structure and convenient to use, and through the arrangement of the hydrophilic polyurethane foam, foam holes are fine and smooth, so that the new granulation is prevented from growing into the foam holes, and meanwhile, the foam dressing is not adhered to wounds; and the drug-loaded hydrogel particles in the polyurethane foam can continuously and uniformly release bacteriostatic and analgesic drug components to the wound part, prevent wound infection and reduce pain of patients during treatment.

Preferably, the hydrogel particles are sodium alginate hydrogel with a shell-core structure.

Preferably, the protective layer is glassine paper, a PET film or a PP film.

Preferably, the polyurethane film is a hydrophilic high moisture-permeable polyurethane film.

Preferably, the release layer is glassine release paper, CCK release paper or PET release paper.

Preferably, the polyurethane foam has a density of 80-150 kg/m3, and the pore diameter of the small pores is 100-275 um.

Preferably, the cross section of the through hole is circular or rhombic.

Preferably, the protective layer is provided with a writing adhesive tape.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

the foam dressing disclosed by the utility model is simple in structure and convenient to use, and through the arrangement of the hydrophilic polyurethane foam, foam holes are fine and smooth, so that the new granulation is prevented from growing into the foam holes, and meanwhile, the foam dressing is not adhered to wounds; and the drug-loaded hydrogel particles in the polyurethane foam can continuously and uniformly release bacteriostatic and analgesic drug components to the wound part, prevent wound infection and reduce pain of patients during treatment.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of the pressure-sensitive adhesive layer of the present invention.

Detailed Description

In order that those skilled in the art will better understand the technical solutions of the present invention, the following description of the preferred embodiments of the present invention is provided in conjunction with specific examples, but it should be understood that the drawings are for illustrative purposes only and should not be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

Example 1:

as shown in fig. 1 to 2, the present invention provides a foam dressing, which comprises a protective layer 1, a polyurethane layer 2, a pressure sensitive adhesive layer 3, a dressing layer 4 and a release layer 5, which are sequentially arranged;

polyurethane layer 2 is 15um ~ 25um transparent polyurethane film, be equipped with through-hole 31 on the pressure sensitive adhesive layer 3, compress sandwich layer 4 and be polyurethane foam, be equipped with a plurality of aperture 41 on the polyurethane foam, be equipped with the aquogel granule in the aperture 41.

Example 2:

as shown in fig. 1 to 2, the present invention provides a foam dressing, which comprises a protective layer 1, a polyurethane layer 2, a pressure sensitive adhesive layer 3, a dressing layer 4 and a release layer 5, which are sequentially arranged;

polyurethane layer 2 is 15um ~ 25um transparent polyurethane film, be equipped with through-hole 31 on the pressure sensitive adhesive layer 3, compress sandwich layer 4 and be polyurethane foam, be equipped with a plurality of aperture 41 on the polyurethane foam, be equipped with the aquogel granule in the aperture 41, this aquogel granule has medicine carrying slow release function.

Hydrogel particles in the polyurethane foam are hydrogel particles with a shell-core structure, the shell layer of the hydrogel particles is sodium alginate hydrogel, and the core of the hydrogel particles is drug gel. After the foam dressing is applied to a wound with liquid seepage, and the applied liquid seepage is wet, the hydrogel particles continuously release the medicine to the wound site through the applied liquid seepage layer. Compared with a dressing which directly adds the medicine to the foam, the hydrogel particle has the slow release function, the medicine is uniformly released and can be continuously released for a long time, and the medicine can continuously and uniformly act on the whole treatment time for a patient with the application time of 3-7 days.

The hydrogel particle drug-carrying component can be a bacteriostatic component, the bacteriostatic component is one or more of polyhexamethylene biguanide hydrochloride, chlorhexidine acetate and benzalkonium chloride, and the hydrogel particle drug-carrying component can continuously play a bacteriostatic role in wounds and prevent the wounds from being infected;

the drug-carrying component of the hydrogel particles can be lidocaine or lidocaine hydrochloride, and the hydrogel particles can relieve pain of wounds in the treatment period and relieve pain of patients.

Further, in another embodiment, the hydrogel particle is a sodium alginate hydrogel with a shell-core structure.

Further, in another embodiment, the protective layer 1 is glassine paper, a PET film, or a PP film.

Further, in another embodiment, the polyurethane film is a hydrophilic highly moisture permeable polyurethane film.

The hydrophilic high-moisture-permeability polyurethane film is characterized in that hydrophilic carboxyl and alcohol group functional groups are introduced during synthesis, the film has higher air permeability and moisture permeability compared with common polyurethane films on the market at present, the positive cup water vapor permeability reaches 3000g/24H x m2 (YY/T0471.2 standard test), the hardness is Shore A40-60, and the film is soft and comfortable when being pasted on human skin.

Further, in another embodiment, the release layer 5 is glassine release paper, CCK release paper or PET release paper.

Further, in another embodiment, the polyurethane foam has a density of 80-150 kg/m3, and the pore diameter of the small pore 41 is 100-275 um.

Because of the fine pore size of the polyurethane foam, the polyurethane foam has the advantages of extremely fast liquid absorption and locking performance, and can prevent the granulation from growing into foam gaps and can not adhere to new wound tissues.

Further, in another embodiment, the through hole 31 has a circular or diamond-shaped cross section.

Further, in another embodiment, the protective layer 1 is provided with a writing tape 11.

The writing adhesive tape 11 can facilitate medical care personnel to record medical care information when being applied.

The foam dressing of the present invention can be easily manufactured or used by those skilled in the art according to the description of the present invention and the attached drawings, and can produce the positive effects described in the present invention.

Unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms of "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.

Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.

Claims (8)

1. A foam dressing characterized by: the adhesive tape comprises a protective layer, a polyurethane layer, a pressure-sensitive adhesive layer, a sandwich layer and a release layer which are sequentially arranged;

the polyurethane layer is 15um ~ 25um transparent polyurethane film, be equipped with the through-hole on the pressure sensitive adhesive layer, the sandwich layer is polyurethane foam, be equipped with a plurality of aperture on the polyurethane foam, be equipped with the aquogel granule in the aperture.

2. The foam dressing of claim 1, wherein: the hydrogel particles are sodium alginate hydrogel with a shell-core structure.

3. The foam dressing of claim 1, wherein: the protective layer is glassine paper, a PET film or a PP film.

4. The foam dressing of claim 1, wherein: the polyurethane film is a hydrophilic high-moisture-permeability polyurethane film.

5. The foam dressing of claim 1, wherein: the release layer is glassine release paper, CCK release paper or PET release paper.

6. The foam dressing of claim 1, wherein: the polyurethane foam has a density of 80-150 kg/m3, and the aperture of the small hole is 100-275 um.

7. The foam dressing of claim 1, wherein: the cross section of the through hole is circular or rhombic.

8. The foam dressing of claim 1, wherein: and a writing adhesive tape is arranged on the protective layer.

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