Silica gel type medical self-adhesive fixing bandage

Abstract

The utility model provides a silica gel type medical self-adhesion fixing bandage. The silica gel type medical self-adhesion fixing bandage comprises a release film layer, a silica gel layer and a PU (polyurethane) film layer which are sequentially stacked, the PU film layer comprises a PU treating agent layer, a first PU film layer, an adhesive layer and a second PU film layer which are sequentially arranged in a stacked mode, and the PU treating agent layer is located on the side close to the silica gel layer. The silica gel type medical self-adhesion fixing bandage can effectively reduce mechanical injuries to injured skin and intact skin, can still keep a good adhesion effect under the condition of sweating, can be repeatedly adhered, and can be torn off and adhered again under the condition that a wound feels uncomfortable; meanwhile, the product is good in air permeability and elasticity, and can provide stable support for the whole bandage, relieve swelling and pain of the wound and promote blood circulation and wound healing.

Description

Technical Field

[0001] This utility model belongs to the field of medical consumables, specifically relating to a silicone gel type medical self-adhesive fixation bandage. Background Technology

[0002] Medical self-adhesive bandages are a very convenient and efficient medical device that can be used for various treatments such as wound fixation, bandaging, and compression. Currently, most medical self-adhesive bandages on the market are of the acrylic pressure-sensitive adhesive type, hot melt adhesive type, or silicone gel type. Acrylic pressure-sensitive adhesive and hot melt adhesive types have relatively simple structures, mainly consisting of a PE (polyethylene) layer or a PU (polyurethane) layer and an adhesive layer. Silicone gel types mainly consist of a PU layer, a non-woven layer, and a silicone gel layer.

[0003] However, the materials used in these types of self-adhesive bandages are generally stiff and have poor stability. While they may meet initial adhesion requirements, their elasticity, breathability, and waterproofing are poor. During application, it's difficult to control the bandage tension, leading to pressure and discomfort on the wound. Furthermore, deep wounds require prolonged immobilization. Traditional medical self-adhesive bandages also have poor breathability, and prolonged use can cause them to lose their adhesiveness, resulting in inadequate wound fixation. All these factors contribute to the inconvenience of using existing medical self-adhesive bandages.

[0004] CN213910867U discloses a medical fabric elastic bandage, comprising a bandage and a connecting layer. The connecting layer is sewn internally into the bandage. A loop is evenly sewn onto one side of the connecting layer, and a fastening device is fastened to the other side of the connecting layer. A female buckle is fixedly installed inside the fastening device. A fastening groove is formed at the center of the top of the female buckle. A first fastening ring is spirally connected to the outer surface of the female buckle. A male buckle is fastened to the top of the female buckle. An insertion block is welded to the center of the bottom of the male buckle. A buckle ring is welded to the bottom face of the insertion block. A second fastening ring is spirally connected to the outer surface of the insertion block. External threads are formed on the upper outer surfaces of the insertion block and the female buckle. This utility model, through the fastening device on the side of the bandage to fasten the loop, allows for the splicing of bandages according to the size of the injured area, thereby effectively bandaging the injured area.

[0005] CN213372996U discloses a waterproof medical bandage, comprising a bandage and a waterproof layer. The bandage is sewn inside the bottom surface of the waterproof layer. A protective cover is fixedly connected to the center of the waterproof layer. A rubber sealing ring is fixedly connected to the bottom edge of the protective cover. A rubber sealing strip is fixedly connected to a ring around the bottom edge of the waterproof layer. An insertion groove is formed inside the inner surface of the waterproof layer. Velcro fasteners are fixedly connected to both ends of the bottom edge and the outer surface of the waterproof layer. An air cavity is formed inside the protective cover. This utility model can seal and protect the injured area through the waterproof layer, allowing people to avoid worrying about the inside of the bandage absorbing water and becoming damp while showering, thus preventing it from affecting the bandaging of the injured area.

[0006] CN106137536A discloses a cooling medical bandage, comprising a main bandage layer. The main bandage layer includes an upper bandage layer, with a lower bandage layer below it. The upper and lower bandage layers are connected by two side edges. A medicated pouch layer is disposed between the upper and lower bandage layers. Restriction straps are provided on both sides of the main bandage layer. One side of each restriction strap has several equidistantly arranged arc-shaped massage points. A sealing strip is connected to the outer side of each restriction strap. A temperature-regulating layer is disposed on the upper bandage layer and is sealed. An antibacterial layer is disposed at the bottom of the lower bandage layer. This invention has advantages such as simple structure, convenient use, rapid bandaging, and good cooling effect.

[0007] However, none of the aforementioned existing technologies have proposed effective solutions to the problems of elasticity and breathability of current bandages. Therefore, how to provide a medical bandage with good adhesion, breathability, and elasticity has become an urgent problem to be solved. Utility Model Content

[0008] To address the shortcomings of existing technologies, the purpose of this invention is to provide a silicone gel-based self-adhesive medical bandage. This silicone gel-based self-adhesive medical bandage effectively reduces mechanical damage to both damaged and intact skin, maintains good adhesion even during sweating, can be repeatedly applied and removed for reapplication when discomfort arises, and is breathable and elastic, providing stable support, reducing swelling and pain, and promoting blood circulation and wound healing.

[0009] To achieve the objective of this utility model, the following technical solution is adopted:

[0010] This utility model provides a silicone gel-type medical self-adhesive fixation bandage, which includes a release film layer (e.g., PE film), a silicone gel layer, and a PU film layer stacked sequentially.

[0011] The PU film layer includes a PU treatment agent layer, a first PU film layer, an adhesive layer (e.g., a pressure-sensitive adhesive layer) and a second PU film layer stacked sequentially, with the PU treatment agent layer located on the side close to the silicone gel layer.

[0012] The above-mentioned product uses a double-layer composite PU film structure to provide stable support for the entire bandage, reduce swelling and pain of the wound, and promote blood circulation and wound healing. At the same time, the use of silicone gel can effectively reduce mechanical damage to damaged and intact skin, and can maintain good adhesion even when sweating. It can be repeatedly applied and removed and reapplied when the wound feels uncomfortable.

[0013] Preferably, the thickness of the release film layer is 60-100μm, such as 60μm, 65μm, 70μm, 75μm, 80μm, 85μm, 90μm, 95μm or 100μm, but not limited to the values ​​listed above. Other values ​​not listed in the above range are also applicable.

[0014] Preferably, the release film layer has a folded tear-off structure on the side surface away from the silicone gel layer.

[0015] Preferably, the silicone gel layer has a plurality of pores, the pore diameter being 1-5 mm and the distance between the pores being 1.5-3 mm. The pore diameter can be 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, or 5 mm, etc., and the distance between the pores can be 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2 mm, 2.1 mm, 2.2 mm, 2.3 mm, 2.4 mm, 2.5 mm, 2.6 mm, 2.7 mm, 2.8 mm, 2.9 mm, or 3 mm, etc., but is not limited to the values ​​listed above. Other unlisted values ​​within the above range are also applicable.

[0016] The perforated design effectively improves the breathability of the bandage while maintaining high elasticity and support.

[0017] Preferably, the basis weight of the silicone gel layer is 100-300 gsm, such as 100 gsm, 150 gsm, 200 gsm, 250 gsm or 300 gsm, but not limited to the values ​​listed above. Other unlisted values ​​within the above range are also applicable.

[0018] Preferably, the thickness of the PU treatment layer is 0.01-10μm, such as 0.01μm, 0.05μm, 0.1μm, 0.5μm, 1μm, 2μm, 3μm, 4μm, 5μm, 6μm, 7μm, 8μm, 9μm, or 10μm, but is not limited to the values ​​listed above. Other unlisted values ​​within the above range are also applicable.

[0019] The aforementioned PU treatment layer can reduce the surface tension of the first PU film layer, making it rougher so that it can better bond with the silicone gel layer and avoid delamination.

[0020] Preferably, the thickness of the first PU film layer and the second PU film layer is independently 10-30μm, such as 10μm, 15μm, 20μm, 25μm or 30μm, but not limited to the values ​​listed above. Other unlisted values ​​within the above range are also applicable.

[0021] Preferably, the basis weight of the adhesive layer is 15-40 gsm, such as 15 gsm, 20 gsm, 25 gsm, 30 gsm, 35 gsm or 40 gsm, but not limited to the values ​​listed above. Other unlisted values ​​within the above range are also applicable.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] This invention provides a silicone gel-type medical self-adhesive fixation bandage. By adopting a double-layer composite PU film structure, it can provide stable support (elasticity) for the entire bandage, reduce swelling and pain of the wound, and promote blood circulation and wound healing. At the same time, the use of silicone gel can effectively reduce mechanical damage to damaged and intact skin, and can maintain good adhesion even when sweating. It can be repeatedly pasted and removed and re-pasted when the wound feels uncomfortable. Attached Figure Description

[0024] Figure 1 These are schematic diagrams of the silicone gel-type medical self-adhesive fixation bandages provided in Examples 1-3;

[0025] Figure 2 These are schematic diagrams of the silica gel layer in Examples 1-3 and Comparative Example 2;

[0026] Figure 3 This is a schematic diagram of the structure of the silicone gel-type medical self-adhesive fixation bandage provided in Comparative Example 2. Detailed Implementation

[0027] The technical solution of this utility model will be further described below through specific embodiments. Those skilled in the art should understand that the embodiments described are merely illustrative of this utility model and should not be considered as specific limitations thereof.

[0028] In the following examples, the PU treatment agent was purchased from Zhende Medical Products Co., Ltd.

[0029] Example 1

[0030] This embodiment provides a silicone gel-type medical self-adhesive fixation bandage, the structure of which is as follows: Figure 1 As shown, 1 is the PE release film layer (80μm), and 2 is the silicone gel layer (its appearance is as shown). Figure 2 As shown, the pore size is 3mm, the pore spacing is 2mm, and the basis weight is 200gsm. 3 is the PU treatment layer (5μm), 4 is the first PU film layer (20μm), 5 is the pressure-sensitive adhesive layer (25gsm), and 6 is the second PU film layer (20μm).

[0031] The preparation method is as follows:

[0032] Pressure-sensitive adhesive is applied to one side of the first PU film to form a pressure-sensitive adhesive layer; then a PU treatment agent is applied to the other side of the first PU film to form a PU treatment agent layer; silicone gel is applied to the PU treatment agent layer and perforated to form a silicone gel layer; a second PU film is adhered to the pressure-sensitive adhesive layer; a PE release film is covered on the silicone gel layer, and the PE release film is pre-folded for easy peeling.

[0033] Example 2

[0034] This embodiment provides a silicone gel-type medical self-adhesive fixation bandage, the structure of which is as follows: Figure 1 As shown, 1 is the PE release film layer (60μm), and 2 is the silicone gel layer (its appearance is as shown). Figure 2 As shown, the pore size is 1mm, the pore spacing is 1.5mm, and the basis weight is 100gsm. 3 is the PU treatment agent layer (0.01μm), 4 is the first PU film layer (10μm), 5 is the pressure-sensitive adhesive layer (15gsm), and 6 is the second PU film layer (30μm).

[0035] The preparation method is the same as in Example 1.

[0036] Example 3

[0037] This embodiment provides a silicone gel-type medical self-adhesive fixation bandage, the structure of which is as follows: Figure 1 As shown, 1 is the PE release film layer (100μm), and 2 is the silicone gel layer (its appearance is as shown). Figure 2As shown, the pore size is 5mm, the pore spacing is 3mm, and the basis weight is 300gsm. 3 is the PU treatment agent layer (10μm), 4 is the first PU film layer (30μm), 5 is the pressure-sensitive adhesive layer (40gsm), and 6 is the second PU film layer (10μm).

[0038] The preparation method is the same as in Example 1.

[0039] Example 4

[0040] This embodiment provides a silicone gel-type medical self-adhesive fixation bandage. Except for the pore size of 0.5 mm and the pore spacing of 1 mm in the silicone gel layer, the structure is the same as that in Embodiment 1.

[0041] Example 5

[0042] This embodiment provides a silicone gel-type medical self-adhesive fixation bandage. Except for the pore size of 6mm and the pore spacing of 4mm in the silicone gel layer, the structure is the same as that in Embodiment 1.

[0043] Example 6

[0044] This embodiment provides a silicone gel-type medical self-adhesive fixation bandage, which is identical to that of Embodiment 1 except that the silicone gel layer does not contain any pores.

[0045] Comparative Example 1

[0046] This comparative example provides a silicone gel-type medical self-adhesive fixation bandage, whose structure is identical to that of Example 1 except that it does not include a pressure-sensitive adhesive layer and a second PU film layer.

[0047] Comparative Example 2

[0048] This comparative example provides a silicone gel-based self-adhesive medical bandage, the structure of which is as follows: Figure 3 As shown, 1 is the PE release film layer (80μm), and 2 is the silicone gel layer (its appearance is as shown). Figure 2 As shown, the pore size is 3mm, the pore spacing is 2mm, and the basis weight is 200gsm. 3 is the PU treatment layer (5μm), 4 is the first PU film layer (20μm), 5 is the first pressure-sensitive adhesive layer (25gsm), 6 is the second PU film layer (20μm), 7 is the second pressure-sensitive adhesive layer (25gsm), and 8 is the third PU film layer (20μm).

[0049] The preparation method is as follows:

[0050] A pressure-sensitive adhesive is applied to one side of the first PU film to form a first pressure-sensitive adhesive layer; then a PU treatment agent is applied to the other side of the first PU film to form a PU treatment agent layer; silicone gel is applied to the PU treatment agent layer and pores are punched to form a silicone gel layer; a second PU film is adhered to the first pressure-sensitive adhesive layer, and pressure-sensitive adhesive is applied to the other side of the second PU film to obtain a second pressure-sensitive adhesive layer; then a third PU film is adhered to the second pressure-sensitive adhesive layer; a PE release film is covered on the silicone gel layer, and the PE release film is pre-folded for easy peeling.

[0051] Comparative Example 3

[0052] This comparative example provides a silicone gel-type medical self-adhesive fixation bandage, which is identical to Example 1 except that the first PU film layer and the second PU film layer are replaced with PU film foam layers of equal thickness.

[0053] Effect test:

[0054] The support performance (refer to EN13726-4 comfort) and breathability (refer to EN13726-2) of the silicone gel-type medical self-adhesive fixation bandages provided in Examples 1-6 and Comparative Examples 1-3 were tested.

[0055] The results are as follows:

[0056]

[0057]

[0058] The results above show that the silicone gel-type medical self-adhesive fixation bandage provided by this invention has excellent support and breathability. Comparative Examples 1 and 4-6 show that this invention further improves breathability by using a specific perforation method and controlling relevant parameters. Comparative Examples 1 and 1-3 show that this invention provides stable support (better elasticity) for the entire bandage by using a double-layer composite PU film structure, reducing swelling and pain of the wound and promoting blood circulation and wound healing.

[0059] The applicant declares that this utility model is illustrated through the above embodiments to describe the silicone gel-type medical self-adhesive fixation bandage of this utility model, but this utility model is not limited to the above embodiments, that is, it does not mean that this utility model must rely on the above embodiments to be implemented. Those skilled in the art should understand that any improvements to this utility model, equivalent substitutions of the raw materials of this utility model, additions of auxiliary components, and selection of specific methods, etc., all fall within the protection scope and disclosure scope of this utility model.

[0060] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0061] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

Claims

1. A medical self-adhering fixation bandage of the silicone gel type, characterized in that, The silicone gel-type medical self-adhesive fixation bandage comprises a release film layer, a silicone gel layer, and a PU film layer stacked sequentially. The PU film layer includes a PU treatment agent layer, a first PU film layer, an adhesive layer, and a second PU film layer stacked sequentially, with the PU treatment agent layer located on the side close to the silicone gel layer.

2. The medical self-adhering fixation bandage of the silicone gel type according to claim 1, characterized in that, The thickness of the release film is 60-100 μm.

3. The medical self-adhering fixation bandage of a silicone gel type according to claim 2, characterized by The release film layer has a folded tear-off structure on the side surface away from the silicone gel layer.

4. The medical self-adhering fixation bandage of the silicone gel type according to claim 3, characterized in that, The silicone gel layer has a number of pores, the pore diameter is 1-5mm, and the distance between the pores is 1.5-3mm.

5. The medical self-adhering fixation bandage of the silicone gel type according to claim 4, characterized in that, The weight of the silica gel layer is 100-300 gsm.

6. The medical self-adhering fixation bandage of the silicone gel type according to claim 5, characterized in that, The thickness of the PU treatment layer is 0.01-10 μm.

7. The medical self-adhering fixation bandage of the silicone gel type according to claim 6, characterized in that, The thickness of the first PU film layer and the second PU film layer are independently 10-30 μm.

8. The medical self-adhering fixation bandage of the silicone gel type according to claim 7, characterized in that, The weight of the adhesive layer is 15-40 gsm.

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