Anti-adhesion antibacterial hydrocolloid dressing patch

Abstract

The utility model discloses an anti-adhesion antibacterial hydrocolloid dressing patch, which relates to the technical field of medical dressings and comprises a dressing patch main body, and an anti-diffusion covered edge and an auxiliary patch which are sequentially arranged on the edge of the dressing patch main body from inside to outside, release paper is arranged on the sides, facing the skin, of the dressing patch body and the auxiliary patch. The dressing patch body is sequentially composed of a hydrocolloid base layer, an alginate dressing core layer and a covering layer film from inside to outside, and every two of the hydrocolloid base layer, the alginate dressing core layer and the covering layer film are tightly bonded through pressure-sensitive adhesive. An antibacterial layer is arranged in the hydrocolloid base layer, and through holes are formed in the hydrocolloid base layer and the antibacterial layer; the dressing patch does not adhere to a wound and can absorb a large amount of seepage, meanwhile, a wet healing environment is provided for the wound, and the dressing patch has an antibacterial effect and can effectively promote wound healing.

Description

Technical Field

[0001] The utility model relates to the technical field of medical dressings, in particular to an anti-adhesion antibacterial hydrocolloid dressing patch. Background Art

[0002] The skin has specific tolerance limits, chemical stability, and physiological activity. When the skin is subjected to external physical stimuli exceeding its own tolerance limit, physical skin wounds will be formed. When the skin is subjected to strong chemical stimuli from the external environment, chemical skin wounds will be formed. Whether it is a physical skin wound or a chemical skin wound, during wound healing, it needs to go through four stages, namely the hemostasis stage, the inflammatory reaction stage, the proliferation stage, and the tissue reconstruction stage.

[0003] Hydrogel dressings keep the wound moist and have the effect of autolytic debridement, which is beneficial to the migration of epithelial cells and the growth of granulation tissue. At the same time, hydrogels can be used as carriers or sustained-release systems for drugs; foam dressings can absorb a large amount of exudate and provide a moist and closed healing environment for the wound; alginate dressings have high absorbency, provide a moist environment for the wound, can perform ion exchange with the wound, promote the proliferation of wound cells, and accelerate wound healing; carbon fiber dressings have high adsorption performance and can reduce or eliminate wound odor; hydrocolloid dressings support autolytic debridement, do not adhere to the wound, and have good compliance;

[0004] However, single dressings have many deficiencies. For example, hydrogel dressings cannot absorb exudate and are prone to macerating the wound; foam dressings cannot be used for dry wounds and autolytic debridement; alginate dressings are also not suitable for dry wounds, have certain residues, and are not easy to clean completely; carbon fiber dressings have insufficient strength and are prone to falling off; hydrocolloid dressings are not suitable for wounds with a large amount of exudate. In order to overcome the various defects of single dressings, the composite application of multiple dressings has been innovated and applied;

[0005] As disclosed in Chinese Patent CN2012201834331, a carboxymethyl chitosan and calcium alginate composite biological dressing includes a non-woven fabric layer, a composite dressing layer and a protective layer. The composite dressing layer selects carboxymethyl chitosan silver and calcium alginate to form a composite functional layer, combining the antibacterial property of chitosan silver and the high moisture absorption and hemostatic properties of calcium alginate; Chinese Patent CN2012203315315 discloses a medical composite activated carbon fiber dressing, which selects activated carbon fiber as the adsorption layer and alginate fiber as the binding layer, combining the high adsorption property of activated carbon fiber and the antibacterial and hemostatic properties of alginate fiber; Chinese Patent CN2015208892914 discloses an alginate non-woven fabric composite dressing, which punches and fills a hydrogel drug in the alginate non-woven fabric, utilizing the high moisture absorption of alginate and the antibacterial and debriding functions of the hydrogel drug; however, there are still some deficiencies in the functions of the above-mentioned disclosed composite dressings, such as insufficient ability to absorb exudate, or easy residue when directly applying drug components to the wound, or easy detachment and contamination of the dressing functional layer to the wound, resulting in defects such as difficult wound cleaning.

[0006] Therefore, in order to enrich and improve the functions of the composite dressing and overcome the defects of drug residue and difficult wound cleaning existing in the existing functional dressings, it is necessary to further improve the structure of the functional dressing. Utility Model Content

[0007] The purpose of the present utility model is to provide an anti-adhesion antibacterial hydrocolloid dressing patch, which does not adhere to the wound, can absorb a large amount of exudate, provides a moist healing environment for the wound, and has an antibacterial effect, and can effectively promote wound healing.

[0008] To achieve the above purpose, the present utility model provides the following technical solution: an anti-adhesion antibacterial hydrocolloid dressing patch, including a dressing patch main body, and an anti-diffusion edging and an auxiliary patch are sequentially arranged on the edge of the dressing patch main body from inside to outside; a release paper is arranged on the side of the dressing patch main body and the auxiliary patch facing the skin; the dressing patch main body is sequentially composed of a hydrocolloid base layer, an alginate core layer, and a covering layer film from inside to outside, and the hydrocolloid base layer, the alginate core layer, and the covering layer film are tightly bonded to each other through a pressure-sensitive adhesive; an antibacterial layer is arranged in the hydrocolloid base layer, and through holes are formed in the hydrocolloid base layer and the antibacterial layer.

[0009] In order to prevent external moisture and bacteria from entering the wound, and at the same time allow the gas and water vapor inside the wound to be discharged, maintaining the moist healing environment of the wound, as a preferred anti-adhesion antibacterial hydrocolloid dressing patch of the present utility model, the covering layer film is a polyurethane film, a polyurethane film, a silicone film or a hot-rolled non-woven fabric.

[0010] In order to be able to absorb a large amount of exudate, preferably in an anti-adhesive and antibacterial hydrocolloid dressing patch of the present utility model, a non-woven fabric layer is provided on the alginate dressing core layer. The thickness of the alginate dressing core layer is 2 mm, and the thickness of the non-woven fabric layer is 0.5 mm.

[0011] In order to ensure the stability of the dressing on the wound and prevent the dressing patch from falling off or shifting, preferably in an anti-adhesive and antibacterial hydrocolloid dressing patch of the present utility model, the auxiliary patch is made of medical adhesive tape.

[0012] In order to facilitate the replacement of the dressing patch, preferably in an anti-adhesive and antibacterial hydrocolloid dressing patch of the present utility model, a tear strip is provided on the edge of the auxiliary patch.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] The dressing patch of the present utility model is composed of a dressing patch main body, an anti-diffusion edge band provided on the edge of the dressing patch main body, and an auxiliary patch. The edge of the dressing patch main body is strengthened by the anti-diffusion edge band to avoid delamination and breakage. The auxiliary patch can ensure the stability of the dressing on the wound and prevent the dressing patch from falling off or shifting. Through the hydrocolloid base layer, the alginate dressing core layer and the covering film, the dressing patch does not adhere to the wound, can absorb a large amount of exudate, provides a moist healing environment for the wound, and has an antibacterial effect, which can effectively promote wound healing. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of the present utility model;

[0016] Figure 2 It is a schematic structural diagram of the dressing patch main body and the release paper of the present utility model;

[0017] Figure 3 It is a schematic cross-sectional structural diagram of the dressing patch main body of the present utility model.

[0018] In the figure: 1. Dressing patch main body; 2. Anti-diffusion edge band; 3. Auxiliary patch; 4. Release paper; 5. Hydrocolloid base layer; 6. Alginate dressing core layer; 7. Covering film; 8. Antibacterial layer; 9. Through hole; 10. Non-woven fabric layer; 11. Tear strip. Detailed Embodiments

[0019] Please refer to Figures 1 to 3, an anti-adhesion antibacterial hydrocolloid dressing patch, comprising a dressing patch main body 1, and an anti-diffusion edge 2 and an auxiliary patch 3 are sequentially arranged on the edge of the dressing patch main body 1 from inside to outside; a release paper 4 is arranged on the side of the dressing patch main body 1 and the auxiliary patch 3 facing the skin; the dressing patch main body 1 is sequentially composed of a hydrocolloid base layer 5, an alginate core layer 6, and a covering film 7 from inside to outside, and the hydrocolloid base layer 5, the alginate core layer 6, and the covering film 7 are tightly bonded to each other through a pressure-sensitive adhesive; an antibacterial layer 8 is arranged in the hydrocolloid base layer 5, and through holes 9 are formed in the hydrocolloid base layer 5 and the antibacterial layer 8.

[0020] In this embodiment: When the dressing patch is not in use, the release paper 4 seals and protects the side of the dressing patch main body 1 and the auxiliary patch 3 facing the skin. Tearing off the release paper 4 makes it easy to use the dressing patch. The anti-diffusion edge 2 strengthens the edge of the dressing patch main body 1 to avoid delamination and breakage. The auxiliary patch 3 can ensure the stability of the dressing on the wound, preventing the dressing patch from falling off or shifting; the hydrocolloid base layer 5 is in direct contact with the skin. The hydrocolloid base layer 5 is made by mixing water-soluble polymer particles (such as sodium carboxymethylcellulose, pectin, etc.) with adhesives such as rubber, making the dressing patch have excellent absorption performance and adhesion performance. It can absorb wound exudate, keep the wound moist, and at the same time closely adhere to the wound to prevent bacteria from invading. The antibacterial layer 8 in the hydrocolloid base layer 5 plays an antibacterial role; the alginate core layer 6 is located on the other side of the hydrocolloid base layer 5. The thickness of the alginate core layer 6 is twice that of the hydrocolloid base layer 5, and the alginate core layer 6 has a strong liquid absorption capacity (it can absorb 13 - 20 times its own weight of liquid). Through the through holes 9, when the alginate dressing contacts a liquid rich in sodium ions, calcium and sodium ions will exchange to form a hydrophilic gel-like substance, which helps to maintain the wet environment of the wound. At the same time, the gel-like substance is not easily adhered to the wound, so that when changing the dressing, the pain of the patient can be reduced and secondary damage to the wound can be avoided. Therefore, it is relatively easy to change. At the same time, there is a hydrocolloid base layer 5 below the alginate core layer 6, so that the dressing fibers of the alginate core layer 6 are not easily left on the wound. The covering film 7 is located on the alginate core layer 6, making the dressing patch have good air permeability and water resistance. It can prevent external moisture and bacteria from entering the wound, and at the same time allow the gas and water vapor inside the wound to escape, maintaining the wet healing environment of the wound, so that the dressing patch does not adhere to the wound, can absorb a large amount of exudate, and at the same time provides a moist healing environment for the wound, and makes the dressing patch have an antibacterial effect, which can effectively promote wound healing.

[0021] As a technical optimization scheme of the present utility model, the covering film 7 is a polyurethane film, a polyurethane film, a silicone film or a hot-rolled non-woven fabric.

[0022] In this embodiment, the polyurethane film, the polyurethane film, the silicone film or the hot-rolled non-woven fabric all have good air permeability and water resistance, which can prevent external moisture and bacteria from entering the wound, while allowing the gas and water vapor inside the wound to escape, maintaining the moist healing environment of the wound, and enhancing the elasticity and durability of the enhanced covering film 7.

[0023] As a technical optimization scheme of the present utility model, a non-woven fabric layer 10 is provided on the alginate core layer 6. The thickness of the alginate core layer 6 is 2 mm, and the thickness of the non-woven fabric layer 10 is 0.5 mm.

[0024] In this embodiment, the thickness of the alginate core layer 6 increases the overall thickness of the dressing patch, which can absorb a large amount of exudate, provide a moist healing environment for the wound, and the non-woven fabric layer 10 can prevent the drug from directly contacting the wound.

[0025] As a technical optimization scheme of the present utility model, the auxiliary patch 3 is made of medical adhesive tape.

[0026] In this embodiment, the auxiliary patch 3 is made of medical adhesive tape. The medical adhesive tape has an anti-allergic effect, and the adhesive layer of the medical adhesive tape can ensure the stability of the dressing on the wound, preventing the dressing patch from falling off or shifting.

[0027] As a technical optimization scheme of the present utility model, a tear tab 11 dressing patch is provided on the edge of the auxiliary patch 3.

[0028] In this embodiment, through the tear tab 11, it is convenient to lift the auxiliary patch 3, which is easy to replace and clean.

[0029] Working principle: Tear off the release paper 4, and it is easy to use the dressing patch. The dressing patch can be attached to the patient's wound. The auxiliary patch 3 can ensure the stability of the dressing on the wound and prevent the dressing patch from falling off or shifting. The hydrocolloid base layer 5 is in direct contact with the skin, making the dressing patch have excellent absorption performance and adhesion performance. It can absorb the wound exudate, keep the wound moist, and at the same time closely adhere to the wound to prevent bacteria from invading. The thickness of the alginate dressing core layer 6 is twice that of the hydrocolloid base layer 5, and the alginate dressing core layer 6 has a strong liquid absorption capacity. Through the through hole 9, when the alginate dressing contacts the liquid rich in sodium ions, calcium and sodium ions will exchange to form a hydrophilic gel-like substance, which helps to maintain the wet environment of the wound. At the same time, the gel-like substance is not easy to adhere to the wound, so when changing the dressing, it can reduce the pain of the patient and avoid causing secondary damage to the wound. Therefore, the replacement is relatively easy. At the same time, there is a hydrocolloid base layer 5 under the alginate dressing core layer 6, making it difficult for the dressing fibers of the alginate dressing core layer 6 to remain on the wound. The covering film 7 is located on the alginate dressing core layer 6, making the dressing patch have good air permeability and water resistance. It can prevent external moisture and bacteria from entering the wound, and at the same time allow the gas and water vapor inside the wound to escape, maintaining the wet healing environment of the wound. As a result, the dressing patch does not adhere to the wound, can absorb a large amount of exudate, provide a moist healing environment for the wound, and has an antibacterial effect, effectively promoting wound healing.

[0030] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An anti-adhesion antibacterial hydrocolloid dressing patch, characterized in that: The invention comprises a dressing patch body (1), and an anti-diffusion edging (2) and an auxiliary patch (3) are arranged on the edge of the dressing patch body (1) in sequence from the inside to the outside; a release paper (4) is arranged on the side of the dressing patch body (1) and the auxiliary patch (3) facing the skin; the dressing patch body (1) is composed of a hydrocolloid base layer (5), an alginate core layer (6), and a covering film (7) in sequence from the inside to the outside, and the hydrocolloid base layer (5), the alginate core layer (6), and the covering film (7) are tightly bonded to each other through pressure-sensitive adhesive; an antibacterial layer (8) is arranged in the hydrocolloid base layer (5), and through holes (9) are opened on the hydrocolloid base layer (5) and the antibacterial layer (8).

2. The anti-adhesion antibacterial hydrocolloid dressing patch according to claim 1, characterized in that: The covering layer film (7) is a polyurethane film, a polyurethane film, an organic silicon film or a hot-rolled non-woven fabric.

3. The anti-adhesion antibacterial hydrocolloid dressing patch according to claim 1, characterized in that: A non-woven fabric layer (10) is arranged on the alginate core layer (6); the thickness of the alginate core layer (6) is 2 mm, and the thickness of the non-woven fabric layer (10) is 0.5 mm.

4. The anti-adhesion antibacterial hydrocolloid dressing patch according to claim 1, characterized in that: The auxiliary patch (3) is made of medical adhesive tape.

5. The anti-adhesion antibacterial hydrocolloid dressing patch according to claim 1, characterized in that: A tear sheet (11) is provided on the edge of the auxiliary patch (3).

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