Negative pressure dressing patch

Abstract

The utility model relates to a negative-pressure dressing plaster. The negative-pressure dressing plaster comprises a main sticking layer, a frame sticking layer, a frame release film and a main release film, the frame pasting layer is arranged on the periphery of the main pasting layer and connected with the main pasting layer. The frame release film is in a folded shape, and half folded edges of the frame release film are at least symmetrically arranged below one opposite edge of the frame pasting layer in a pasting mode. And the main release film is adhered to the lower part of the main adhesive layer. Through the inner and outer layered design of the adhesive layer, the outer layer of the adhesive layer is provided with the upper frame release film and the lower frame release film with certain hardness, so that the adhesive tape is very convenient to use and is not easy to scrap.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a dressing patch for a negative pressure dressing device. Background Technology

[0002] Negative pressure dressings are a new type of wound management device that has been used clinically in recent years. Traditional dressings provide passive drainage, drawing exudate from the surface of granulation tissue. Negative pressure dressings, on the other hand, provide active drainage, drawing exudate from the wound surface onto the outer dressing so that it can drain from deeper blood vessels. Current negative pressure dressing devices use an airtight connection between the dressing and a negative pressure device. The device creates negative pressure on the dressing to drain the exudate, and its core power component is a pneumatic pump, including a vacuum pump and a piezoelectric pump. Dressings are used to achieve an airtight seal on the skin surface. Due to their strong adhesiveness and the ultra-thin and soft adhesive layer designed for tight adhesion, dressings are prone to misalignment when removing the release liner during application. Furthermore, the ultra-thin adhesive layer can cause adhesion between layers, easily rendering the dressing unusable or resulting in a loss of airtightness, thus affecting or eliminating the negative pressure application. Additionally, the ultra-thin and very soft nature of the adhesive layer, such as the PU film, makes it difficult to apply pressure smoothly by grasping the edges of the dressing after peeling off the release liner. This requires extreme care and easily leads to adhesion and ruin of the dressing. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a negative pressure dressing that is easy to use and not easily damaged.

[0004] The technical solution to achieve the purpose of this utility model is to provide a negative pressure dressing, including a main adhesive layer, a border adhesive layer, a border release film and a main release film; the border adhesive layer is disposed on the outer periphery of the main adhesive layer and connected to the main adhesive layer;

[0005] The release film for the border is folded in half, and the release film for the border is symmetrically adhered to the lower edge of one opposite edge of the border adhesive layer by at least half of its folded side;

[0006] The main release film is placed below the main adhesive layer.

[0007] Furthermore, the aforementioned negative pressure dressing also includes a frame; the frame is release paper, the shape of which is consistent with the frame adhesive layer, and the frame is correspondingly adsorbed and disposed above the frame adhesive layer.

[0008] Furthermore, the frame features a broken notch.

[0009] Furthermore, the aforementioned negative pressure dressing also includes a core layer and a perforated silicone layer; the core layer is a composite layer, including a support layer and an absorbent layer that are sequentially bonded together from bottom to top, the support layer being made of sandwich fabric with interlayered mesh yarn; the absorbent layer being made of super absorbent fiber SAF.

[0010] The perforated silicone layer is made of silicone gel;

[0011] The core layer is located below the center of the main adhesive layer, and the perforated silicone layer is located below the core layer.

[0012] The main release film is applied below the main adhesive layer, the perforated silicone layer, and the edge adhesive layer.

[0013] Furthermore, the core layer has a hollow observation window; the outer periphery of the perforated silicone layer is 0% larger than the outer periphery of the core layer.

[0014] Furthermore, both the main adhesive layer and the border adhesive layer are made of medical waterproof PU film. The main adhesive layer is rectangular, and the border adhesive layer is a corresponding square. The main adhesive layer and the border adhesive layer are an integral piece, with the border adhesive layer integrally connected to the outer periphery of the main adhesive layer.

[0015] The release film for the border is symmetrically applied below the opposite edges of the long side of the border adhesive layer.

[0016] Furthermore, both the main adhesive layer and the border adhesive layer are made of medical waterproof PU film. The main adhesive layer is rectangular, and the border adhesive layer is a corresponding square. The border adhesive layer is attached to the perimeter of the main adhesive layer from the top or bottom.

[0017] The release film for the border is symmetrically applied below the opposite edges of the long side of the border adhesive layer.

[0018] Furthermore, the aforementioned negative pressure dressing also includes a negative pressure connecting component, which includes a connecting buckle and a breathable membrane; the main adhesive layer is provided with a first vent hole in the core layer area;

[0019] The connector includes a base plate and a columnar nested seat connected to the center of the base plate. The base plate and the nested seat are provided with a second vent hole that runs vertically through the base plate. The upper opening of the nested seat is provided with a connector mounting groove for connecting a negative pressure instrument. The bottom of the nested seat is provided with an annular closing cover plate at the connection between it and the base plate. The outer wall of the nested seat is provided with a quarter turn of external thread on each side. The base plate is provided with protruding limiting tenons on both sides of the nested seat.

[0020] The breathable membrane is a disc-shaped membrane made of ePTFE material. The breathable membrane is adhered to the lower end face of the connector to block the second vent hole, and the second vent hole is located in the center of the breathable membrane.

[0021] The lower end face of the connecting buckle and the breathable membrane is strongly adhered to the upper surface of the main adhesive layer with glue, and the second vent is directly opposite the first vent of the main adhesive layer.

[0022] This invention has several advantages: The negative pressure dressing of this invention features a layered design with inner and outer adhesive layers. The outer layer of the adhesive layer has a rigid upper and lower release liner, making it very convenient to use and less prone to damage. During use, the operator first peels off the main release liner, then grasps the four corner release liners and the outer edge to adhere the entire main adhesive layer to the patient's skin. The presence of the release liners and the outer edge provides a certain degree of rigidity to the edges of the main adhesive layer, facilitating adhesion and preventing bending or sticking. Furthermore, the presence of the release liners ensures that the main adhesive layer acts as a base. The edge of the adhesive layer will not lose its adhesiveness due to being gripped by hand, thus preventing a loss of seal or curling after application. After the main adhesive layer is applied, peel off the two edge release films. The folded edge release films are easy to peel off; simply grasp the lower edge release film and peel it off to the other half of the edge release film attached to the adhesive layer. Peeling is done naturally from the inside out, which helps the adhesive layer adhere smoothly and tightly to the skin surface. Finally, the upper edge of the adhesive layer can be easily peeled off through the break notch, completing the adhesion to the skin. Then, connect it to the negative pressure device via the connecting buckle to perform negative pressure dressing treatment. Attached Figure Description

[0023] Figure 1 This is a schematic diagram (front view) of a negative pressure dressing patch according to the present invention.

[0024] Figure 2 for Figure 1 Top view;

[0025] Figure 3 This is a three-dimensional structural diagram of a negative pressure dressing patch according to the present invention;

[0026] Figure 4 This is a schematic diagram illustrating the manufacturing process of a negative pressure dressing patch according to this utility model;

[0027] Figure 5 This is an exploded view of a negative pressure dressing patch of this utility model during use;

[0028] Figure 6 for Figure 1 Enlarged schematic diagram of part A;

[0029] Figure 7 This is a schematic diagram of another structure of a negative pressure dressing patch according to the present invention;

[0030] Figure 8 for Figure 7Enlarged schematic diagram of part B.

[0031] The markings in the above figures are as follows: main adhesive layer 1, border adhesive layer 2, core layer 3, perforated silicone layer 4, border 5, fracture notch 51, border release film 6, main release film 7, connecting buckle 8, nesting seat 81, breathable film 9. Detailed Implementation

[0032] The technical solutions in the embodiments of this application will be clearly described below with reference to the accompanying drawings. It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, the first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0033] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, with the front view as the reference positional relationship. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0034] (Example 1)

[0035] See Figures 1 to 5 The negative pressure dressing in this embodiment includes a main adhesive layer 1, a border adhesive layer 2, a core layer 3, a perforated silicone layer 4, a border 5, a border release film 6, a main release film 7, and a negative pressure connecting assembly.

[0036] Both the main adhesive layer 1 and the border adhesive layer 2 are made of medical-grade waterproof PU film (polyurethane film), which has strong adhesion, can firmly adhere to the skin, and is breathable, allowing water vapor to pass through but not liquid water; 80% of the exudate will evaporate. In this embodiment, the main adhesive layer 1 is rectangular, and the border adhesive layer 2 is a corresponding square. The main adhesive layer 1 and the border adhesive layer 2 are integrally formed, with the border adhesive layer 2 integrally connected to the outer periphery of the main adhesive layer 1.

[0037] The core layer 3 is a composite layer, consisting of a support layer and an absorbent layer layered together from bottom to top. The support layer is made of sandwich fabric with interlayered mesh yarn, which is durable and belongs to the premium warp-knitted fabric category. The thickness of the sandwich fabric interlayered mesh yarn is about 2-3mm in its normal state, and it has the functions of guiding flow, plasticity and preventing overall collapse. Its mesh gaps are dense on one side and sparse on the other. The dense side has a pore size of 1mm and the sparse side has a pore size of 2mm. The 1mm pore size faces downward. The absorbent layer is made of super absorbent fiber SAF, which has a super absorbent function and can absorb 200 times its own weight in water. It will not cause changes in the length of the fiber material due to water absorption, and the fiber properties will not decrease. The thickness of the absorbent layer is about 2-3mm.

[0038] The perforated silicone layer 4 is made of silicone gel, which is adhesive and can be applied to skin wounds. It can maintain the dryness and wetness balance of the wound, release low molecular weight silicone oil, soften scars, accelerate epithelial formation, change the chemical structure of tissues, inhibit collagen fiber proliferation, and has moderate adhesion so that it will not cause secondary damage to the wound when it is removed.

[0039] The core layer 3 is located below the center of the main adhesive layer 1, and the perforated silicone layer 4 is located below the core layer 3. Preferably, the outer periphery of the perforated silicone layer 4 is 10% larger than that of the core layer 3 to provide better airtightness when applied to the skin.

[0040] See Figure 4 Because the negative pressure dressing in this embodiment is a very thin product, therefore, it introduces... Figure 4 The schematic diagram of the manufacturing layered structure shown provides a clearer view of the stacked structure. The frame 5 is a release paper with the same shape as the frame adhesive layer 2. The frame 5 has a tear notch 51 to facilitate peeling. The frame 5 is positioned above the frame adhesive layer 2, and there is a slight adhesion between the frame 5 and the frame adhesive layer 2.

[0041] See Figure 6 There are two release films 6 for the frame. The release films 6 are folded in half. The release films 6 are symmetrically attached to the lower edge of the frame adhesive layer 2 by their folded half. Preferably, they are symmetrically attached to the lower edge of the long side of the frame adhesive layer 2.

[0042] The main release film 7 is attached below the main adhesive layer 1, the perforated silicone layer 4, and the edge adhesive layer 2.

[0043] The main adhesive layer 1 has a first vent hole located in the area of ​​the core layer 3, which in this embodiment is located in the rear center of the core layer 3 area.

[0044] The negative pressure connection assembly includes a connecting buckle 8 and a breathable membrane 9.

[0045] The connecting buckle 8 includes a base plate and a columnar nesting seat 81 connected to the center of the base plate. The base plate and the nesting seat 81 are provided with a second vent hole that runs vertically through the base plate. The upper opening of the nesting seat 81 is provided with a connector mounting groove for connecting a negative pressure instrument. The bottom of the nesting seat 81 is provided with an annular closed cover plate at the connection between it and the base plate. The outer wall of the nesting seat 81 is provided with a quarter turn of external thread on each side. The base plate is provided with protruding limiting tenons on both sides of the nesting seat 81.

[0046] The breathable membrane 9 is a disc-shaped membrane made of ePTFE material. The breathable membrane 9 is adhered to the lower end face of the connecting buckle 8 to block the second vent hole, and the second vent hole is located in the center of the breathable membrane 9.

[0047] The lower end faces of the connecting buckle 8 and the breathable membrane 9 are strongly adhered to the upper surface of the main adhesive layer 1 with glue, and the second vent is directly opposite the first vent of the main adhesive layer 1.

[0048] When using the negative pressure dressing in this embodiment, the operator first peels off the main release film 7, then grasps the four corner release films 6 and the frame 5 to adhere the entire main adhesive layer 1 to the patient's skin surface. The presence of the release films 6 and 5 provides a certain degree of hardness to the edges of the main adhesive layer 1, facilitating adhesion. This hardness prevents bending and adhesion. Furthermore, the release films 6 prevent the frame adhesive layer 2, which forms the edge of the main adhesive layer 1, from losing its adhesiveness due to hand gripping, thus preventing sealing or curling after application. After the main adhesive layer 1 is applied, the two release films 6 are peeled off. The folded release films 6 are easy to peel off; simply grasp the lower release film 6 and peel off the other half of the release film 6 adhered to the frame adhesive layer 2. Peeling is done naturally from the inside out, further facilitating a smooth and tight adhesion of the frame adhesive layer 2 to the skin surface. Finally, the frame 5 above the frame adhesive layer 2 is easily peeled off through the tear notch 51, completing the adhesion to the skin. See [link to relevant documentation]. Figure 5 Then, by connecting it to the negative pressure device via connector 8, negative pressure dressing treatment can be implemented.

[0049] Example 2

[0050] In this embodiment, the core layer 3 is also provided with a hollow observation window, such as a circular observation window. Since the main adhesive layer 1 is transparent while the core layer 3 is not transparent, this observation window is provided to observe the overall condition and negative pressure of the dressing.

[0051] Example 3

[0052] In this embodiment, see Figure 7 and Figure 8 The border adhesive layer 2 is attached from above to the periphery of the main adhesive layer 1 from its edge. Similarly, the border adhesive layer 2 can also be attached from below to the periphery of the main adhesive layer 1 from its edge.

[0053] Obviously, the above embodiments are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all embodiments here. However, these obvious variations or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A negative pressure dressing patch, characterized by: It includes a main adhesive layer, a border adhesive layer, a border release film, and a main release film; the border adhesive layer is disposed on the outer periphery of the main adhesive layer and is connected to the main adhesive layer; The release film for the border is folded in half, and the release film for the border is symmetrically adhered to the lower edge of one opposite edge of the border adhesive layer by at least half of its folded side; The main release film is placed below the main adhesive layer.

2. The negative pressure dressing of claim 1, wherein: It also includes a border; the border is release paper, the shape of which is consistent with the border adhesive layer, and the border is attached to the top of the border adhesive layer.

3. The negative pressure dressing of claim 2, wherein: The border has a broken notch.

4. The negative pressure dressing of claim 1, wherein: It also includes a core layer and a perforated silicone layer; the core layer is a composite layer, which includes a support layer and an absorbent layer that are bonded together from bottom to top. The support layer is made of sandwich fabric with interlayered mesh yarn; the absorbent layer is made of super absorbent fiber SAF. The perforated silicone layer is made of silicone gel; The core layer is located below the center of the main adhesive layer, and the perforated silicone layer is located below the core layer. The main release film is applied below the main adhesive layer, the perforated silicone layer, and the edge adhesive layer.

5. The negative pressure dressing of claim 4, wherein: The core layer has a hollow observation window; the outer periphery of the perforated silicone layer is 0% larger than the outer periphery of the core layer.

6. The negative pressure dressing of claim 1, wherein: Both the main adhesive layer and the border adhesive layer are made of medical-grade waterproof PU film. The main adhesive layer is rectangular, and the border adhesive layer is a corresponding square. The main adhesive layer and the border adhesive layer are an integral piece, with the border adhesive layer integrally connected to the outer periphery of the main adhesive layer. The release film for the border is symmetrically applied below the opposite edges of the long side of the border adhesive layer.

7. The negative pressure dressing of claim 1, wherein: Both the main adhesive layer and the border adhesive layer are made of medical waterproof PU film. The main adhesive layer is rectangular, and the border adhesive layer is a corresponding square. The border adhesive layer is attached to the perimeter of the main adhesive layer from the top or bottom. The release film for the border is symmetrically applied below the opposite edges of the long side of the border adhesive layer.

8. The negative pressure dressing of claim 4, wherein: It also includes a negative pressure connection assembly, which includes a connecting buckle and a breathable membrane; the main adhesive layer is provided with a first vent hole in the core layer area; The connector includes a base plate and a columnar nested seat connected to the center of the base plate. The base plate and the nested seat are provided with a second vent hole that runs vertically through the base plate. The upper opening of the nested seat is provided with a connector mounting groove for connecting a negative pressure instrument. The bottom of the nested seat is provided with an annular closing cover plate at the connection between it and the base plate. The outer wall of the nested seat is provided with a quarter turn of external thread on each side. The base plate is provided with protruding limiting tenons on both sides of the nested seat. The breathable membrane is a disc-shaped membrane made of ePTFE material. The breathable membrane is adhered to the lower end face of the connector to block the second vent hole, and the second vent hole is located in the center of the breathable membrane. The lower end face of the connecting buckle and the breathable membrane is strongly adhered to the upper surface of the main adhesive layer with glue, and the second vent is directly opposite the first vent of the main adhesive layer.

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