A composite foam dressing patch

Abstract

The utility model discloses a kind of composite foam dressings, specifically related to medical supplies technical field, including outer film layer, waterproof layer is adhered to outer film layer outside, first film layer is adhered to outer film layer inside periphery, heat preservation buffer layer is adhered to outer film layer inside middle part, the heat preservation buffer layer is fixed with absorption layer on side away from outer film layer. The device judges whether to replace contact layer by observing the absorption condition of absorption layer from outside, replace contact layer after absorption saturation of absorption layer, tear outer film layer, then tear absorption layer, contact layer and heat preservation buffer layer in inside, tear second film layer above new heat preservation buffer layer, then adhere new heat preservation buffer layer with outer film layer, finally, outer film layer is torn again and adhered to skin, so as to reach when replacing dressing can replace inside alone, avoid the whole tear down and feel stronger and tear range larger and tear down wound.

Description

Technical Field

[0001] This utility model relates to the field of medical supplies technology, specifically to a composite foam dressing patch. Background Technology

[0002] Composite foam dressings are medical wound care products that combine the advantages of multiple materials. Their structural design revolves around three core objectives: exudate management, wound protection, and ease of use. A typical structure includes a backing layer, adhesive tape, a foam composite layer, and a protective layer. Some products also incorporate silicone or hydrocolloid components to enhance performance.

[0003] Composite foam dressings are widely applicable to the management of various acute and chronic wounds, especially excelling in the following scenarios: stage II-IV pressure ulcers, diabetic foot ulcers, and lower extremity venous ulcers, requiring long-term absorption of exudate and maintenance of a moist wound environment; postoperative and acute wounds: donor site wounds, abrasions, first- and second-degree burns, and secondary healing of surgical incisions, reducing secondary injury during dressing changes; pressure ulcer prevention: for high-risk groups such as long-term bedridden elderly and paralyzed patients, reducing the incidence of pressure ulcers through pressure relief and moisturizing functions. Existing composite foam dressings involve directly sticking the adhesive tape to the wound during use. When changing the dressing, the entire tape is peeled off before a new one is applied. Peeling off the tape results in significant skin stretching, which can easily tear the wound and remove a large amount of the skin hair around the wound, causing considerable discomfort. To facilitate removal, a raised corner is usually provided on the tape. However, since dressings are typically worn for extended periods, especially when the wound is located on a mobile area such as the arm or leg, this raised corner can rub against the outside, causing the tape to detach easily. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a composite foam dressing that can effectively solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: This utility model provides a composite foam dressing, including an outer film layer, a waterproof layer adhered to the outer side of the outer film layer, a first coating layer adhered to the outer periphery of the inner side of the outer film layer, a heat-insulating buffer layer adhered to the middle of the inner side of the outer film layer, an absorbent layer fixed to the side of the heat-insulating buffer layer away from the outer film layer, and a contact layer fixed to the side of the absorbent layer.

[0006] Furthermore, the outer film layer is made of polyurethane film, and multiple vent holes are provided through the outer side of the outer film layer.

[0007] Furthermore, the absorbent layer is made of polyurethane foam, and the length and width of the waterproof layer are greater than the length and width of the absorbent layer, respectively.

[0008] Furthermore, a second film layer is adhered to the side of the heat insulation buffer layer away from the absorbent layer. The heat insulation buffer layer and the outer film layer are used together. The length and width of the absorbent layer are greater than the length and width of the heat insulation buffer layer, and the absorbent layer is adhered to the inner side of the outer film layer on all four sides.

[0009] Furthermore, the contact layer is made of silicone soft polysiloxane gauze, and the thermal insulation buffer layer is made of porous cotton.

[0010] Furthermore, an adhesive strip is adhered to one corner of the inner side of the outer film layer, and two adhesive strips are provided.

[0011] The technical solution provided by this utility model has the following advantages compared with the known prior art: 1. This application determines whether to replace the contact layer by observing the absorption of the absorbent layer from the outside. After the absorbent layer is saturated, the contact layer is replaced. The outer film layer is torn open, and then the inner absorbent layer, contact layer and thermal insulation buffer layer are torn off. The second film layer on top of the new thermal insulation buffer layer is torn off, and then the new thermal insulation buffer layer is bonded to the outer film layer. Finally, the torn part of the outer film layer is re-bonded to the skin. This allows the inner layer to be replaced separately when changing the dressing, avoiding the discomfort of tearing off the whole dressing and the tearing of the wound by a large area.

[0012] 2. This application uses two adhesive strips to ensure that after the four corners of the outer film layer are adhered to the skin, the corners will not lift up, and subsequent friction will have less impact on the outer film layer. This allows the edge corner to adhere to the skin, and also makes it easier to remove the dressing later.

[0013] 3. The thermal insulation buffer layer in this application is breathable and has a certain thickness, providing a certain cushioning when the wound is touched by the outside. The outer film layer is designed with ventilators to allow air to pass through, thus achieving good overall breathability and providing simple protection for the wound. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model. Figure 2 This is a schematic diagram of the inner side of the outer thin film layer structure of this utility model; Figure 3 This is a schematic diagram of the overall structure of this utility model from the outside. Figure 4 This is a schematic diagram of a portion of the layer structure of this utility model.

[0016] The labels in the diagram represent: 1. Outer film layer; 11. Ventilation holes; 2. Waterproof layer; 3. First coating layer; 4. Adhesive strip; 5. Second coating layer; 6. Thermal insulation buffer layer; 7. Absorbent layer; 8. Contact layer. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0018] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0019] This application discloses a composite foam dressing, including an outer film layer 1, a waterproof layer 2 adhered to the outer side of the outer film layer 1, a first coating layer 3 adhered to the outer periphery of the inner side of the outer film layer 1, a heat-insulating buffer layer 6 adhered to the middle of the inner side of the outer film layer 1, an absorbent layer 7 fixed to the side of the heat-insulating buffer layer 6 away from the outer film layer 1, and a contact layer 8 fixed to the side of the absorbent layer 7.

[0020] Reference Appendix Figure 1 The outer film layer 1 is made of polyurethane film. Multiple vent holes 11 are opened through the outer side of the outer film layer 1. Adhesive is applied to the inner side of the outer film layer 1. The adhesive is covered by the first film layer 3. During production, the heat insulation buffer layer 6 is directly bonded to the middle of the outer film layer 1.

[0021] Reference Appendix Figure 3 and 4 The absorbent layer 7 is made of polyurethane foam, which can quickly absorb and lock in wound exudate, prevent maceration of the surrounding skin, and keep the wound bed moist. The length and width of the waterproof layer 2 are greater than the length and width of the absorbent layer 7, respectively. The waterproof layer 2 covers the absorbent layer 7 to prevent external water from contaminating the internal absorbent layer 7.

[0022] Reference Appendix Figure 1 and 4The thermal insulation buffer layer 6 has a second coating layer 5 attached to the side away from the absorption layer 7. The thermal insulation buffer layer 6 and the outer film layer 1 are used together. The length and width of the absorption layer 7 are greater than the length and width of the thermal insulation buffer layer 6, and the absorption layer 7 is attached to the inner side of the outer film layer 1 on all four sides. When replacing the absorption layer 7 and the contact layer 8 in the future, the original layer can be directly peeled off, and the new absorption layer 7 and the second coating layer 5 on the top of the thermal insulation buffer layer 6 can be peeled off to attach the thermal insulation buffer layer 6 to the outer film layer 1.

[0023] Reference Appendix Figure 4 The contact layer 8 is made of soft silicone gauze, which will not tear the newly formed granulation tissue when it is changed, greatly reducing the patient's pain. The heat insulation and buffer layer 6 is made of porous cotton, which can be well breathable and has a certain thickness to provide some cushioning when the wound is touched by the outside.

[0024] Reference Appendix Figure 1 There are two adhesive strips 4 attached to one corner of the inner side of the outer film layer 1. The two adhesive strips 4 are designed to prevent the corners of the outer film layer 1 from lifting up after they are attached to the skin. The subsequent friction has little impact on the outer film layer 1. There are some protrusions at the adhesive strips 4. When it is necessary to tear off the outer film layer 1 later, a cotton swab can be inserted into the protrusion of the adhesive strip 4 to help tear off the outer film layer 1.

[0025] The workflow of this utility model is as follows: First, peel off the first covering layer 3. Align the contact layer 8 with the wound and adhere the first covering layer 3 to the skin near the wound. During use, the absorbent layer 7 absorbs the fluid flowing from the wound. Observe the absorption of the absorbent layer 7 from the outside to determine whether to replace the contact layer 8. Replace the contact layer 8 when it is saturated. There is a partial protrusion at the adhesive strip 4. When it is necessary to peel off the outer film layer 1 later, you can use a cotton swab to insert into the protrusion of the adhesive strip 4 to help peel off the outer film layer 1. After peeling off part of the outer film layer 1, peel off the inner absorbent layer 7, contact layer 8, and thermal insulation buffer layer 6. Peel off the second film layer 5 above the new thermal insulation buffer layer 6, then adhere the new thermal insulation buffer layer 6 to the outer film layer 1, and finally re-adhere the torn part of the outer film layer 1 to the skin. The two adhesive strips 4 ensure that the corners of the outer film layer 1 will not lift after being adhered to the skin, and the subsequent friction will have little impact on the outer film layer 1. The waterproof layer 2 covers the absorbent layer 7 to prevent external water from contaminating the inner absorbent layer 7. The thermal insulation buffer layer 6 is breathable and has a certain thickness, providing a certain cushioning when the wound is touched by the outside.

[0026] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A composite foam dressing, characterized in that: It includes an outer film layer (1), a waterproof layer (2) is adhered to the outside of the outer film layer (1), a first coating layer (3) is adhered to the outer periphery of the inner side of the outer film layer (1), a heat insulation buffer layer (6) is adhered to the middle of the inner side of the outer film layer (1), an absorbent layer (7) is fixed to the side of the heat insulation buffer layer (6) away from the outer film layer (1), and a contact layer (8) is fixed to the side of the absorbent layer (7).

2. The composite foam dressing according to claim 1, characterized in that: The outer film layer (1) is made of polyurethane film, and multiple air vents (11) are provided through the outer side of the outer film layer (1).

3. The composite foam dressing according to claim 1, characterized in that: The absorbent layer (7) is made of polyurethane foam, and the length and width of the waterproof layer (2) are greater than the length and width of the absorbent layer (7), respectively.

4. The composite foam dressing according to claim 1, characterized in that: The thermal insulation buffer layer (6) is attached to a second film layer (5) on the side away from the absorption layer (7). The thermal insulation buffer layer (6) and the outer film layer (1) are used together. The length and width of the absorption layer (7) are greater than the length and width of the thermal insulation buffer layer (6), and the absorption layer (7) is attached to the inner side of the outer film layer (1) on all four sides.

5. A composite foam dressing according to claim 1, characterized in that: The contact layer (8) is made of silicone soft polysiloxane gauze, and the heat insulation buffer layer (6) is made of porous cotton.

6. The composite foam dressing according to claim 1, characterized in that: An adhesive strip (4) is attached to one corner of the inner side of the outer film layer (1), and there are two adhesive strips (4).

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