CN213373002U

CN213373002U - Foam dressing with isolation function

Info

Publication number: CN213373002U
Application number: CN202021295638.XU
Authority: CN
Inventors: 张锐; 鲁建国; 冯幼强
Original assignee: Zhende Medical Co Ltd
Current assignee: Zhende Medical Co Ltd
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2021-06-08
Anticipated expiration: 2030-07-06

Abstract

The utility model relates to a prevent that neogenesis tissue from growing into inside the foam dressing, the foam dressing that has the isolation function of the surface of a wound when avoiding taking off the product, the utility model discloses in current foam dressing and surface of a wound contact one side, increase one deck isolation layer material, this kind of isolation layer material has microporous structure, can not influence the absorption of foam material to liquid. Meanwhile, the isolating layer material is a microporous net structure with a smooth surface, cells are difficult to adhere to the isolating layer material, and neogenetic tissues cannot grow into the foam material through the isolating layer. The isolation layer material can be a mesh cloth woven by common nylon monofilaments or PET monofilaments, or a mesh cloth woven by nylon monofilaments or PET monofilaments with antibacterial/antibacterial functions; because the antibacterial component is added during the production of the raw materials, when the wound seepage contacts with the isolating layer, the antibacterial component can be slowly released, so that the antibacterial function is exerted in the microenvironment between the dressing and the wound.

Description

Foam dressing with isolation function

Technical Field

The utility model belongs to medical dressing class, in particular to prevent that neogenesis tissue from growing into inside the foam dressing, avoid taking off the foam dressing that has the isolation function of the damage surface of a wound when removing the product.

Background

The medical dressings are various in types, and have no specific shapes such as gauze, drug-impregnated gauze, non-woven fabric with tiny pores and the like, so that the medical dressings can be used at will, but have operation troubles.

In general, gauze type dressings easily absorb wound secretions, but have no protective ability against bacterial infection, and in particular, they are noted that they delay treatment by drying the wound, and they are stuck to the wound to be inconvenient to exchange, and there are also damages of new tissues and pain associated therewith. And the pus is generated in the early stage of treatment, so the dressing is replaced for a plurality of times in one day. In order to overcome these drawbacks, many dressings have been developed and used, but these dressings have problems such as insufficient ability to adjust the absorption and moisture permeability, remaining residues when they are placed in close contact with a wound and exchanged, and the like, and thus they cannot be widely used and are only suitable for a specific wound.

The types of dressings mainly used at present are of a film type, a hydrocolloid type, a hydrogel type, a non-woven type, a polyurethane foam type, and the like. Particularly exemplified are dressings of high therapeutic effect such as hydrocolloid type, hydrogel type, nonwoven type, polyurethane foam type, and the like.

The traditional foam dressing is suitable for the wounds with moderate exudation and no infection on the surface in each wound healing stage. The foam dressing has the advantages of high absorption property, proper moisture permeability, super-strong exudate locking capacity, maintenance of the optimal wound healing environment, good maintenance of the micro-moist environment for wound healing, promotion of the generation of new blood vessels and granulation tissues, contribution to the migration of new epithelial cells, great shortening of the wound healing time, reduction of dressing change times and reduction of treatment cost.

The main defects are as follows: (1) the foam material is directly contacted with the wound surface, and the new granulation tissue can grow into the micropores of the foam material. When the dressing is removed, the wound surface new tissue can be damaged, so that the pain of a patient can be brought, and the adverse effect on wound surface repair can be brought. (2) The foam dressing is mainly used for nursing chronic wounds, the nursing time of the wounds is long, and the risk of infection is high.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a foam dressing with isolation layer, isolation layer material has antibacterial function concurrently.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a foam dressing with an isolation function comprises a back lining layer, a foam material layer, an isolation layer and a release paper layer; one side of the foam material layer is fixedly connected with the isolation layer, and the other side of the foam material layer is fixed with the back lining layer; the surface of the isolation layer is uniformly provided with a plurality of through micropores.

Preferably, the thickness of the spacer layer is 30 to 100 μm.

Preferably, the pore size of the micropores in the separation layer is 50 to 200 μm.

Preferably, the pore opening rate of the micropores on the isolation layer is 40-80%.

Preferably, the barrier layer is welded by adhesive or ultrasonic welding to a foam layer which is secured to the backing layer by adhesive.

Preferably, the isolation layer is woven by nylon monofilaments or PET monofilaments with an antibacterial or bacteriostatic function.

Preferably, the thickness of the foam layer is 3-8 mm.

Preferably, the end part of the release paper layer is provided with a folded edge.

The utility model discloses in current foam dressing and surface of a wound contact one side, increase one deck isolation layer material, this kind of isolation layer material has microporous structure, can not influence the absorption of foam material to liquid. Meanwhile, the isolating layer material is a microporous net structure with a smooth surface, cells are difficult to adhere to the isolating layer material, and neogenetic tissues cannot grow into the foam material through the isolating layer. The isolation layer material can be a mesh cloth woven by common nylon monofilaments or PET monofilaments, or a mesh cloth woven by nylon monofilaments or PET monofilaments with antibacterial/antibacterial functions; because the antibacterial component is added during the production of the raw materials, when the wound seepage contacts with the isolating layer, the antibacterial component can be slowly released, so that the antibacterial function is exerted in the microenvironment between the dressing and the wound.

The utility model has the advantages that: the utility model is woven into a net by nylon granules or PET master batches or monofilaments which are formed by adding antibacterial/bacteriostatic materials through blending and weaving, a plurality of uniform micropores are formed on the surface, the absorption of the foam material to liquid is not influenced, cells are difficult to adhere to the isolation layer, and neogenetic tissues can not penetrate through the isolation layer to grow into the foam material, so that the wound surface is prevented from being damaged when the product is uncovered; the wound dressing does not produce medicine immersion and medicine residue on the wound, maintains the sterile clean environment of the wound, does not adhere to the wound, can absorb a large amount of seepage, provides a moist healing environment for the wound, has the effects of antibiosis and autolysis debridement, can effectively promote the wound healing, can avoid the peculiar smell of the wound, and is convenient and comfortable to use.

Drawings

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

fig. 2 is a plan view of the present invention.

In the figures, 1. backing layer; 2. a layer of foam material; 3. an isolation layer; 4. a release paper layer; 5. folding edges; 6. and (4) micro-pores.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following describes the integral transparent dressing in detail with reference to the attached drawings.

Example 1

Referring to fig. 1 and fig. 2, the embodiment provides a foam dressing with an isolation and bacteriostasis function, which includes a backing layer 1, a release paper compounded on one side of the backing layer 1, a foam layer 2 adhered on the other side of the backing layer 1 by an adhesive, an isolation layer 3 welded on the other side of the foam layer 2 by an adhesive or ultrasonic waves, and a plurality of uniformly distributed micropores 6 formed on the surface of the isolation layer 3;

the foam material layer 2 is polyurethane foam, the thickness is 5mm, and the backing layer 1 is a polyurethane film material; the isolation layer 3 is mesh cloth woven by nylon monofilaments or PET monofilaments with an antibacterial function, the monofilaments are nylon granules or PET master batches and an antibacterial material which is blended and woven, and the antibacterial material comprises but is not limited to silver ions, guanidino Polymer (PHGC), quaternary ammonium salt and copper ions; the thickness of the isolation layer 3 was 65 μm, the pore diameter of the micropores was 190 μm, and the opening ratio was 70%.

The end part of the release paper layer 4 is provided with a folded edge 5 which is convenient for tearing.

This embodiment is at present foam dressing and surface of a wound contact one side, increases one deck isolation layer material, and this kind of isolation layer material has microporous structure, can not influence the absorption of foam to liquid. Meanwhile, the isolating layer material is a microporous net structure with a smooth surface, cells are difficult to adhere to the isolating layer material, and neogenetic tissues cannot grow into the foam material through the isolating layer. The isolation layer material is added with the antibacterial component during the production of the raw materials, so that the antibacterial component can be slowly released when the wound exudate contacts with the isolation layer, and the antibacterial function is exerted in the microenvironment between the dressing and the wound.

Example 2

the foam material layer 2 is polyurethane foam, the thickness is 5mm, and the backing layer 1 is a polyurethane film material; the isolation layer 3 is mesh cloth woven by nylon monofilaments or PET monofilaments; the thickness of the isolation layer 3 was 65 μm, the pore diameter of the micropores was 190 μm, and the opening ratio was 70%.

This embodiment is at present foam dressing and surface of a wound contact one side, increases one deck isolation layer material, and this kind of isolation layer material has microporous structure, can not influence the absorption of foam to liquid. The isolation layer is mainly by the screen cloth that nylon monofilament or PET monofilament were worked out, and this kind of isolation layer material is a smooth micropore network structure in surface simultaneously, and the cell not only is difficult to the adhesion on the isolation layer material, and neogenesis tissue can't see through the isolation layer moreover and grow into foam.

It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims

1. A foam dressing with an isolation function is characterized by comprising a back lining layer, a foam material layer, an isolation layer and a release paper layer; one side of the foam material layer is fixedly connected with the isolation layer, and the other side of the foam material layer is fixed with the back lining layer; the surface of the isolation layer is uniformly provided with a plurality of through micropores.

2. The foam dressing with a barrier function according to claim 1, wherein the thickness of the barrier layer is 30-100 μm.

3. The foam dressing with the isolating function as claimed in claim 1, wherein the pore size of the micropores on the isolating layer is 50-200 μm.

4. The foam dressing with an isolation function as claimed in claim 1, wherein the isolation layer has a micro-pore opening rate of 40-80%.

5. The foam dressing having a barrier function according to claim 1, wherein the barrier layer is bonded to the foam layer by an adhesive or ultrasonic welding, and the foam layer is fixed to the backing layer by an adhesive.

6. The foam dressing with the function of isolation as claimed in claim 1, wherein the isolation layer is woven into a net by nylon monofilaments or PET monofilaments with the functions of bacteriostasis and antibiosis.

7. The foam dressing with an isolation function as claimed in claim 1, wherein the thickness of the foam material layer is 3-8 mm.

8. The foam dressing with the function of insulation according to any one of claims 1-7, characterized in that the end of the release paper layer is provided with a hem.