CN221180810U - Super absorbent dressing with high air permeability - Google Patents

Abstract

The super absorbent dressing with high air permeability comprises a surface layer, a bottom layer and a middle layer, wherein the middle layer is positioned between the surface layer and the bottom layer, the surface layer is in contact with a wound surface, the surface layer and the bottom layer are air-permeable non-woven fabrics layers, the middle layer is an SAP foam composite layer and consists of a foam body and a plurality of SAP blocks distributed in the foam body, and the SAP blocks longitudinally penetrate through the foam body; the intermediate layer is an SAP foam composite layer, has higher air permeability, can ensure the liquid absorption and liquid storage capacity of the dressing, is soft enough, and is suitable for wounds at different positions.

Description

Super absorbent dressing with high air permeability

Technical Field

The utility model relates to a medical dressing, in particular to a super absorbent dressing with high air permeability.

Background

Medical dressing used in modern clinic gradually develops towards high-end, and foam dressing is a common choice in clinic because of the porous property and good water absorption. However, due to the porous nature, the liquid may diffuse and accumulate around the edges or in a downward direction by gravity, which may lead to seepage from the edges or to maceration of the wound surface. Therefore, when the foam dressing is used, the foam dressing needs to be replaced frequently, so that the pain of a patient is increased, and the nursing difficulty of medical care is increased.

On this basis, technicians use super absorbent resin as a layer of dressing to enhance the ability of the dressing to absorb permeate so as to reduce the number of dressing changes. However, the polymer resin is hard, can only be used for leveling wound surfaces, and has low comfort; in addition, the surface of the polymer resin easily becomes uneven after water absorption, thereby leading to the unsmooth fitting with the wound surface; most importantly, although the liquid absorbing capacity is improved relative to foam, the air permeability is insufficient relative to foam dressing.

Disclosure of utility model

In order to overcome the problems, the utility model provides a novel super absorbent dressing with high air permeability and high comfort.

The technical scheme of the utility model is as follows: the utility model provides a super dressing that absorbs water of high gas permeability, including top layer, bottom and intermediate level, the intermediate level is located the top layer and the bottom is in the middle of, and the top layer is in contact with the surface of a wound, and top layer and bottom are ventilative non-woven fabrics layer, and the intermediate level is the SAP foam composite bed, comprises foam body and a plurality of SAP pieces of distribution in the foam body, and the SAP piece vertically runs through the foam body.

Further, the SAP blocks are distributed in a uniform distribution or in a non-uniform distribution with a dense middle and sparse periphery.

Further, a hollow air vent is arranged in the middle of the SAP block.

Further, the breathable non-woven fabric layer of the surface layer is one of the following: the hot air non-woven fabric layer, the PE perforation film layer and the anti-adhesion film layer with holes.

Further, the apertured anti-stick film layer is one of the following: a porous hydrogel film layer or a perforated hydrogel film layer.

Further, the breathable nonwoven layer of the bottom layer is one of the following: waterproof PP non-woven fabrics layer, waterproof SMS non-woven fabrics layer, waterproof all-cotton water thorn non-woven fabrics layer.

Further, the surface layer and the middle layer, and the middle layer and the bottom layer are fixedly connected through spot gluing.

Further, the SAP blocks are fixedly connected with the foam body through point gluing.

Further, the angle of the SAP pieces is vertical or inclined.

Further, the surface layer, the bottom layer and the intermediate layer are laminated together in order and independently for use.

Due to the adoption of the technical scheme, compared with the traditional product, the utility model has the beneficial effects that the intermediate layer is the composite layer of the SAP foam, and the utility model has the following advantages:

Compared with the traditional foam dressing, the SAP material is added to enable the dressing to be super-absorbent, so that the liquid absorption and storage capacity of the foam dressing is enhanced;

Compared with the traditional dressing containing the SAP layer, the air permeability of the foam is improved, the defects of high hardness and poor bending property of the whole layer of SAP dressing are avoided, the SAP dressing can be used for wounds at more positions, and the SAP dressing is not limited to leveling wound surfaces; in addition, the cost is lower than that of a dressing with a simple SAP layer through the combination of the SAP and the foam, and the cost performance is higher;

The combination of the SAP and the foam also fully utilizes the water retention capacity of the SAP, and the relative uniform distribution of the seepage in the whole dressing can be realized due to the multipoint distribution mode of the SAP.

Drawings

FIG. 1 is a schematic cross-sectional view of a super absorbent dressing A of example 1 of the present utility model;

FIG. 2 is a schematic view of an intermediate layer in example 1 of the present utility model;

FIG. 3 is a schematic cross-sectional view of a super absorbent dressing B of example 2 of the present utility model;

FIG. 4 is a schematic view of an intermediate layer in example 2 of the present utility model;

FIG. 5 is a schematic cross-sectional view of a super absorbent dressing C of example 3 of the present utility model;

Fig. 6 is a schematic diagram of an intermediate layer in example 3 of the present utility model.

Description of the embodiments

The utility model discloses a super absorbent dressing with high air permeability, which comprises a surface layer, a bottom layer and an intermediate layer arranged between the surface layer and the bottom layer, wherein the surface layer, the bottom layer and the intermediate layer are sequentially laminated. The surface layer and the bottom layer are both non-woven fabrics, and the middle layer is a super absorbent resin foam composite layer, namely an SAP foam composite layer. The middle layer takes foam as a body, and the foam has the advantages of good overall softness and bending property. A plurality of through holes are uniformly or unevenly drilled on the foam body vertically or obliquely, and penetrate through the foam body to form hollow slotted holes. The slot hole is filled with the compressed and blocked super absorbent resin or the compressed and blocked super absorbent resin with a through hole in the middle. The foam has the advantages that the water absorption and water retention capacity of the super absorbent resin is exerted, so that the dressing becomes the super absorbent dressing, and meanwhile, the foam has high air permeability because of the porosity of the foam body; the air permeability of the compressed and agglomerated super absorbent resin with the through hole in the middle is stronger. One of the non-uniform perforation modes is a distribution mode with dense middle and sparse periphery, and the distribution mode has the advantages that the adsorption capacity of the middle position can be exerted to the greatest extent when the foam body is contacted with a wound surface, and meanwhile, the periphery position has less water-absorbing resin, so that the foam body has better flexibility and bendability, is more beneficial to the lamination of the wound surface, and reduces the risk of seepage flowing out from the periphery.

The surface layer is a non-woven fabric layer, the surface layer is a layer which is in direct contact with the wound, and a hot air non-woven fabric layer, a PE perforated film layer or an anti-adhesion film layer with holes is preferably selected. The hot air non-woven fabric has a through hole structure and good air permeability; likewise, the PE punching film layer has a through hole structure and good air permeability, and in addition, the PE punching film layer has the advantage of not adhering to wounds. The porous anti-adhesion membrane layer can be made of porous hydrogel or made by punching the hydrogel, and has the advantages of contact with wound surface, non-adhesion, good comfort and capability of guaranteeing the air permeability.

The bottom layer in the utility model is also a non-woven fabric layer, and a waterproof non-woven fabric layer is preferably selected, and a waterproof PP non-woven fabric layer or a waterproof SMS non-woven fabric layer or a waterproof all-cotton spun-laced non-woven fabric layer can be selected. The waterproof non-woven fabric layer has the main function of preventing seepage from seeping to the outer side of the bottom layer to pollute clothes or bed sheets; and the infection problem caused by the penetration of external liquid into the wound surface is avoided.

The surface layer and the middle layer, and the middle layer and the bottom layer are connected by dot-shaped gluing, and can be independently arranged without being adhered to each other. Spot gluing is a common way in the bonding of a dressing layer to a layer, by spot-coating a number of glue spots on the bonding surface, by means of glue spot bonding. Its advantages are high adhesion and no influence on air permeability. In the SAP foam composite layer, the SAP bulk material and the foam can be glued in a dot mode or can be independently arranged.

The following detailed description of specific embodiments of the utility model is provided in connection with the accompanying drawings.

Example 1

As shown in fig. 1 and 2, the present utility model provides a super absorbent dressing a with high air permeability, comprising a surface layer 11, a bottom layer 13 and a middle layer 12, which are sequentially laminated. The surface layer 11 is a hot air non-woven fabric layer, and the bottom layer 13 is a waterproof PP non-woven fabric layer. The middle layer 13 comprises a foam body 14 and SAP blocks 15, wherein a plurality of vertical through holes are uniformly distributed on the foam body 14, and the through holes are filled with the SAP blocks 15 which are tightly compressed.

In use, the surface layer 11 contacts the wound surface and covers the wound, exudates from the wound enter the intermediate layer 12 through the surface layer 11, wherein the SAP block 15 has super-absorbent and water-retaining properties, the foam body 14 has porous air-permeable and super-absorbent properties, and the intermediate layer 12 formed by the foam body is used for absorbing and retaining the exudates; the bottom layer 13 serves to prevent external liquids from penetrating the wound surface and from flowing out of the dressing.

Example 2

As shown in fig. 3 and 4, the present embodiment provides a super absorbent dressing B having high air permeability, which includes a surface layer 21, a middle layer 22, and a bottom layer 23 in this order. The surface layer 21 is connected with the middle layer 22 and the bottom layer 23 through point gluing. Wherein the surface layer 21 is a PE perforated film layer, and the bottom layer 23 is a waterproof SMS non-woven fabric layer. The middle layer 23 comprises a foam body 24 and SAP blocks 25 fixed in the foam body, wherein a plurality of through holes are unevenly distributed on the foam body 24, the distribution rule is that the middle is dense and the periphery is sparse, and the inner walls of the through holes are fixedly connected with the SAP blocks 25 through dot-shaped glue.

When in use, the surface layer 21 is contacted with the wound, covers the wound, and exudates of the wound enter the middle layer 22 through the surface layer 21, so that the surface layer 21 has good air permeability and is not easy to adhere to the wound; the central wound position with more exudate positions is contacted with the central position of the dressing, the SAP block 25 with more dense positions has the function of rapid liquid absorption and retention, and the foam body 24 at the periphery has the function of porous ventilation; the bottom layer 23 serves to prevent external liquids from penetrating the wound surface and from flowing out of the dressing.

Example 3

As shown in fig. 5 and 6, the present embodiment provides a super absorbent dressing C having high air permeability, comprising a surface layer 31, a middle layer 32 and a bottom layer 33 laminated in this order. Wherein, top layer 31 is foraminiferous anti-adhesion rete, can be self porous anti-adhesion rete, also can be through the anti-adhesion rete that punches, and this embodiment selects porous hydrogel membrane, and it has anti-adhesion, comfortable gas permeability's effect. The bottom layer 33 is a waterproof all-cotton spunlaced nonwoven layer. The middle layer 32 includes a foam body 34, an SAP block 35, and ventilation holes 36; the foam body 34 is uniformly or unevenly distributed with a plurality of through holes, and the through holes are filled with the SAP blocks 35 which are tightly compressed, wherein the SAP blocks 35 are characterized by having a ventilation hole 36 which penetrates up and down in the middle.

When in use, the surface layer 31 is contacted with a wound and covers the surface of the wound, exudates from the wound enter the middle layer 32 through the surface layer 31, the middle layer 32 is used for absorbing and storing the exudates, and the bottom layer 33 is used for preventing external liquids from penetrating into the wound surface and flowing out of the dressing.

The ventilation holes 36 in the intermediate layer 32 enhance the ventilation effect of the SAP block site, allowing the dressing to have higher ventilation.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (10)

1. The utility model provides a super dressing that absorbs water of high gas permeability, includes top layer, bottom and intermediate level, the intermediate level be located the top layer with the bottom in the middle of, the top layer contact with the surface of a wound, its characterized in that, the top layer with the bottom be ventilative non-woven fabrics layer, the intermediate level be the SAP foam composite bed, by the foam body with distribute a plurality of SAP pieces in the foam body constitute, the SAP piece vertically run through the foam body.

2. The superabsorbent dressing of claim 1 wherein the SAP blocks are distributed in a uniform distribution or in a non-uniform distribution with a dense middle and a sparse periphery.

3. The super absorbent dressing as set forth in claim 1, wherein said SAP block has a hollow air hole in the middle.

4. The super absorbent dressing of claim 1, wherein said breathable nonwoven layer of said top layer is one of the following: the hot air non-woven fabric layer, the PE perforation film layer and the anti-adhesion film layer with holes.

5. The highly breathable superabsorbent dressing of claim 4 wherein the apertured anti-adhesive film layer is one of the following: a porous hydrogel film layer or a perforated hydrogel film layer.

6. The superabsorbent dressing of claim 1 wherein the breathable nonwoven layer of the bottom layer is one of the following: waterproof PP non-woven fabrics layer, waterproof SMS non-woven fabrics layer, waterproof all-cotton water thorn non-woven fabrics layer.

7. The super absorbent dressing of claim 1, wherein said surface layer is fixedly connected to said intermediate layer and said intermediate layer is fixedly connected to said bottom layer by spot gluing.

8. The superabsorbent dressing of claim 1 wherein the SAP block is fixedly attached to the foam body by dispensing adhesive.

9. The superabsorbent dressing of claim 1 wherein the SAP block is angled vertically or obliquely.

10. The super absorbent dressing as set forth in claim 1 wherein the top layer, the bottom layer and the middle layer are laminated together independently in sequence for use.