CN209154217U - A new type of medical hydrogel composite dressing - Google Patents

Abstract

The utility model discloses a kind of new medical hydrogel combine dressing, including off-style paper layer, fill out medicine layer, anti-bacterial hydrogel layer, sorptivety buffer layer, air-permeable layer and back sheet.Off-style paper layer is double-layer structure, and there is removing notch in centre.Filling out medicine layer is domes, inside has and promotees epidermal growth factor and hemostatic plaster, is contacted with wound with antibacterial, hemostasis, and wound healing effect is promoted.Anti-bacterial hydrogel layer is that gel applies core, and one side is contacted with medicine layer is filled out；The other side is gear-like structure, is in contact with sorptivety buffer layer, effectively increase contact area, is conducive to the absorption to wound fluid.The utility model when in use pushes release paper aside, and being fitted on wound on one side for medicine layer is filled out, simple and easy to use, which has the functions such as very strong sepage absorbability and superior antibacterial, anti-inflammatory, hemostasis.

Description

A new type of medical hydrogel composite dressing

technical field

The utility model belongs to the technical field of medical water dressings, in particular to a novel medical hydrogel composite dressing.

Background technique

Traditional medical dressings, such as medical absorbent cotton, gauze, etc., have a mesh structure, a simple production process, a wide range of applications, a wide range of raw materials, low prices, good absorption of wound exudate, and a certain protective effect on wounds. However, traditional medical dressings also have obvious shortcomings. The wound cannot be kept moist, which is not conducive to wound healing. When the dressing is changed, the wound adheres, damages the new granulation tissue and causes pain, and has poor antibacterial ability, easy infection, and poor hemostatic effect.

In order to keep the wound moist, hydrogel-based dressings have gradually appeared. The hydrogel has a unique three-dimensional network structure, which can effectively lock the water in it, so that the water content of the hydrogel can be as high as 95%. Moreover, it can slowly release water, maintain the slightly moist environment of the wound, and promote wound healing. Moreover, the hydrogel usually has a certain ability to absorb liquid and can slowly absorb the wound exudate. It can not meet the nursing stage with more exudation in the early stage of the wound, and the hydrogel needs to be replaced, which greatly limits the clinical application of this type of dressing.

In the process of wound healing, it is usually necessary to prevent bacterial infection. The traditional method is to apply additional antibiotics to the wound and then cover the wound and the medicine with a dressing. The operation and use are complicated. Therefore, it gradually appears that the antibacterial agent is loaded on the dressing to realize dressing. Direct antibacterial effect on wounds.

Therefore, research and development of a functional composite dressing that can create a closed wetting environment for the wound surface, promote wound healing, and have significant antibacterial and hemostatic effects, and can eliminate odors, has become an urgent technical problem to be solved.

Utility model content

Purpose of the invention: Aiming at the deficiencies in the prior art, the purpose of this utility model is to provide a novel medical hydrogel composite dressing.

Technical scheme: In order to realize the above-mentioned purpose of the invention, the technical scheme adopted by the present utility model is as follows:

A novel medical hydrogel composite dressing, comprising a release paper layer, a drug filling layer, an antibacterial hydrogel layer, an absorption buffer layer, a breathable layer and a backing layer sequentially arranged from an inner layer to an outer layer. The drug layer is a plurality of strip-like structures embedded in the antibacterial hydrogel layer, one side of the drug filling layer is close to the release paper layer, and the other surfaces are embedded in the antibacterial hydrogel layer, and the antibacterial hydrogel layer One side is close to the release paper layer, and the other side is connected with the absorption buffer layer.

Preferably, the cross-section of the drug-filled layer is arched, and the epidermal growth factor EGF and hemostatic ointment are filled in the drug-filled layer.

Preferably, the antibacterial hydrogel layer is an antibacterial hydrogel layer made of a biopolymer material, and the biopolymer material is carrageenan, chitosan or cellulose, within the antibacterial hydrogel layer Set with amoxicillin or ampicillin.

Preferably, the connection surface of the antibacterial hydrogel layer and the absorbing buffer layer is a gear-like structure that meshes with each other.

Preferably, the absorption buffer layer is a superabsorbent resin, the breathable layer is a polyurethane film, the backing layer is a medical tape made of medical polypropylene or non-woven fabric, and the release paper layer is PET Or a release paper sheet, and a peeling cut is provided in the middle of the release paper sheet.

Preferably, the antibacterial hydrogel layer, the absorbent buffer layer, the breathable layer and the backing layer are formed by composite connection between two adjacent layers in the form of gluing and/or hot pressing.

Preferably, the size of the backing layer is not smaller than the size of the breathable layer, the size of the breathable layer is not smaller than the size of the absorbent buffer layer, and the size of the release paper layer is not smaller than the size of the antibacterial hydrogel layer.

Preferably, the edge of the release paper layer should exceed the edge of the corresponding antibacterial hydrogel layer by 1-2 cm.

Preferably, the thickness of the release paper layer is 0.1-2mm, the thickness of the drug filling layer is 0.3-1.2mm, the thickness of the antibacterial hydrogel layer is 1.5-5mm, and the thickness of the absorption buffer layer is 1-5mm, the thickness of the breathable layer is 0.5-2mm, and the thickness of the backing layer is 0.5-4mm.

Preferably, the thickness of the release paper layer is 0.35mm, the thickness of the drug filling layer is 0.8mm, the thickness of the antibacterial hydrogel layer is 2mm, the thickness of the absorption buffer layer is 3mm, and the thickness of the breathable layer is 3mm. The thickness of the layer was 2 mm and the thickness of the backing layer was 2 mm.

Beneficial effect: Compared with the prior art, the utility model has the following advantages:

1. Fast and powerful absorption capacity of exudate;

2. Low permeability, keeping the wound moist and avoiding repeated mechanical damage when changing dressings;

3, easy to use, good compliance, suitable for all parts of the body;

4, heat insulation, buffer external impact;

5. GF promotes wound healing and reduces scarring

6, hemostasis, antibacterial, prevent infection.

The antibacterial hydrogel layer in the medical hydrogel composite dressing of the utility model is in direct contact with the wound to protect, promote healing, prevent infection and relieve pain and other therapeutic effects. When the wound liquid absorbed by the antibacterial hydrogel layer reaches a certain amount It is automatically absorbed by the absorbent buffer layer to ensure that the wound maintains a good moist environment. The absorbent buffer layer has strong absorbing power and excellent elasticity and adaptability, which can well relieve the wound caused by external force. damage. EGF in the filling layer promotes wound healing and reduces the generation of scars, and hemostatic ointment is beneficial to wound hemostasis and healing.

Description of drawings

Fig. 1 is a schematic diagram of the structure of a new type of medical hydrogel composite dressing;

Figure 2 is a schematic diagram of the structure of the new medical hydrogel composite dressing.

Detailed ways

The present utility model is further explained below in conjunction with the accompanying drawings.

As shown in Figures 1 and 2, the side close to the skin is defined as the inner layer, and the novel medical hydrogel composite dressing of the present application comprises a release paper layer 1, a drug filling layer 2, The antibacterial hydrogel layer 3, the absorption buffer layer 4, the breathable layer 5 and the backing layer 6, the drug filling layer 2 is a plurality of spaced strip structures embedded in the antibacterial hydrogel layer 3, and one side of the drug filling layer 2 The antibacterial hydrogel layer 3 is closely attached to the release paper layer 1 on one side, and the other side is connected to the absorption buffer layer 4 . When in use, the release paper layer 1 is torn off from the dressing and discarded, and the drug filling layer 2 is in full contact with the antibacterial hydrogel layer 3 and the wound surface.

The cross section of the medicine filling layer 2 is arched, and the medicine filling layer 2 is filled with epidermal growth factor EGF and hemostatic ointment. The drug filling layer 2 composed of EGF and bacitretin is in full contact with the wound surface to stop bleeding, promote wound healing, and reduce the generation of scars.

The antibacterial hydrogel layer 3 is an antibacterial hydrogel layer 3 made of a biopolymer material, the biopolymer material is carrageenan, chitosan or cellulose, and amoxicillin or amoxicillin is arranged in the antibacterial hydrogel layer 3. Penicillins such as ampicillin.

. The antibacterial hydrogel 3 of this example is made of biopolymer carrageenan and amoxicillin added to treat or prevent wound infection and promote wound healing. The antibacterial hydrogel layer 3 releases antibacterial ingredients to produce an antibacterial effect on the wound, and the hydrogel maintains the moist environment of the wound to avoid wound adhesion.

The connection surface of the antibacterial hydrogel layer 3 and the absorbing buffer layer 4 is a gear-like structure that meshes with each other. The contact area between the antibacterial hydrogel layer 3 and the absorption buffer layer 4 is increased, and the exudate of the wound can be quickly absorbed by the absorption buffer layer 4 through the antibacterial hydrogel layer 3 to avoid the contamination of the wound by the exudate. and maceration of the skin to promote faster wound healing.

The absorption buffer layer 4 is made of high water absorbent resin, the breathable layer 5 is made of polyurethane film, the backing layer 6 is medical tape made of medical polypropylene or non-woven fabric, and the release paper layer 1 is PET or release Paper, the size of the release paper layer 1 is not smaller than the size of the antibacterial hydrogel layer 3, and the release paper layer 1 can prevent the dressing from being contaminated during storage. There is a peeling cut 7 in the middle of the release paper sheet, which is convenient for quick tearing off during use.

The antibacterial hydrogel layer 3, the absorbing buffer layer 4, the breathable layer 5 and the backing layer 6 are compositely connected and molded in the form of gluing and/or hot pressing between the two adjacent layers.

The size of the backing layer 6 is not smaller than the size of the breathable layer 5 , and the size of the breathable layer 5 is not smaller than the size of the absorbent buffer layer 4 to protect the dressing. Preferably, the edge of the release paper layer 1 should exceed the edge of the corresponding antibacterial hydrogel layer 3 by 1-2 cm.

Since the thickness of each functional layer of the composite dressing will affect its effect and the effect of the cooperation between the layers, the thickness of the release paper layer 1 is 0.1-2mm, the thickness of the filling layer 2 is 0.3-1.2mm, and the antibacterial The thickness of the hydrogel layer 3 is 1.5-5mm, the thickness of the absorption buffer layer 4 is 1-5mm, the thickness of the breathable layer 5 is 0.5-2mm, and the thickness of the backing layer 6 is 0.5-4mm.

Preferably in this embodiment, the thickness of the release paper layer 1 is 0.35mm, the thickness of the drug filling layer 2 is 0.8mm, the thickness of the antibacterial hydrogel layer 3 is 2mm, the thickness of the absorption buffer layer 4 is 3mm, and the thickness of the breathable layer 5 is 3mm. The thickness is 2 mm, and the thickness of the backing layer 6 is 2 mm.

The novel hydrogel composite dressing of the utility model has good water absorption and water retention capacity, does not need to be replaced frequently, treats wound exudate in time, has good antibacterial ability, maintains a moist environment on the wound surface, and can promote wound healing and reduce scars. form.

Claims (10)

1. a kind of new medical hydrogel combine dressing, it is characterised in that: including the release paper set gradually by internal layer outer layers Layer (1) fills out medicine layer (2), anti-bacterial hydrogel layer (3), sorptivety buffer layer (4), air-permeable layer (5) and back sheet (6), described to fill out medicine layer It (2) is multiple spaced strip structures of insertion anti-bacterial hydrogel layer (3), the one side for filling out medicine layer (2) is close to release Paper layer (1), remaining surface are embedded in anti-bacterial hydrogel layer (3), and anti-bacterial hydrogel layer (3) one side is close to off-style paper layer (1), Another side is connect with sorptivety buffer layer (4).

2. new medical hydrogel combine dressing according to claim 1, it is characterised in that: described to fill out cutting for medicine layer (2) Face is domed, fills out in medicine layer (2) described filled with rush epidermal growth factor EGF and hemostatic plaster.

3. new medical hydrogel combine dressing according to claim 1, it is characterised in that: the anti-bacterial hydrogel layer (3) be anti-bacterial hydrogel layer (3) made of bioabsorbable polymer material, the bioabsorbable polymer material be carragheen, chitosan or Person's cellulose is provided with Amoxicillin or ampicillin in the anti-bacterial hydrogel layer (3).

4. new medical hydrogel combine dressing according to claim 1 or 3, it is characterised in that: the anti-bacterial hydrogel The joint face of layer (3) and sorptivety buffer layer (4) is pitch wheel shape structure.

5. new medical hydrogel combine dressing according to claim 1, it is characterised in that: the sorptivety buffer layer (4) For super absorbent resin, the air-permeable layer (5) is polyurethane film, and the back sheet (6) is that polypropylene for medical article or nonwoven are fabric At medical proof fabric, the off-style paper layer (1) be PET or the release scraps of paper, among the release scraps of paper be equipped with removing notch (7)。

6. new medical hydrogel combine dressing according to claim 1, it is characterised in that: the anti-bacterial hydrogel layer (3), sorptivety buffer layer (4), air-permeable layer (5) and back sheet (6), it is multiple for gluing and/or the form of hot pressing between adjacent two layers Close connection molding.

7. new medical hydrogel combine dressing according to claim 1, it is characterised in that: the ruler of the back sheet (6) The very little size not less than air-permeable layer (5), the size of the air-permeable layer (5) is not less than the size of sorptivety buffer layer (4), described release The size of paper layer (1) is not less than the size of anti-bacterial hydrogel layer (3).

8. new medical hydrogel combine dressing according to claim 7, it is characterised in that: the off-style paper layer (1) Edge exceeds corresponding anti-bacterial hydrogel layer (3) Ying Bianyuan 1-2cm.

9. new medical hydrogel combine dressing according to claim 1, it is characterised in that: the off-style paper layer (1) With a thickness of 0.1-2mm, the medicine layer (2) of filling out with a thickness of 0.3-1.2mm, the anti-bacterial hydrogel layer (3) with a thickness of 1.5-5mm, The sorptivety buffer layer (4) with a thickness of 1-5mm, the air-permeable layer (5) with a thickness of 0.5-2mm, the back sheet (6) with a thickness of 0.5-4mm。

10. new medical hydrogel combine dressing according to claim 9, it is characterised in that: the off-style paper layer (1) is thick Degree is 0.35mm, the medicine layer (2) of filling out with a thickness of 0.8mm, the anti-bacterial hydrogel layer (3) with a thickness of 2mm, the sorptivety is slow Rush layer (4) with a thickness of 3mm, the air-permeable layer (5) with a thickness of 2mm, the back sheet (6) with a thickness of 2mm.