TWM521451U - Hydrogel dressings with easy-peeling protective film - Google Patents

Description

Hydrogel dressing with easily peelable protective film layer

The present invention relates to a hydrogel dressing, in particular a hydrogel dressing having an easily peelable protective film layer.

Hydrogel dressings are widely used wound care medical supplies in recent years. The inner layer of the hydrogel dressing is a substrate having a hydrogel component, which can be used to absorb the exudate generated by the human body when the wound is healed, and the outer layer is an antibacterial waterproof PU film. Compared to conventional dry dressings, this combination allows the wound to be wet and accelerate wound healing.

The detailed structure of the hydrogel dressing can be represented by the new patent No. M376275 of the Republic of China, please refer to Figure 1. The patent discloses a water-absorbing hydrogel dressing patch, the structure design comprising a bottom release film layer 1, an intermediate layer 2 (gas permeable film layer, PU film), a water-absorbing hydrogel layer 3, A first upper release liner layer 4 and a second upper release liner layer 5. The first upper release liner layer 4 is first peeled off and attached over the wound in accordance with an indication of the operational print 6 above the first upper release liner layer 4 and the second upper release liner layer 5. Next, the second upper release paper layer 5 is peeled off along a pair of line 7 at which time a pressure sensitive adhesive layer 8 under the intermediate layer 2 is exposed, which can be used to adhere the water-absorbing hydrogel dressing patch to the skin near the wound. on. The function of the bottom release film layer 1 is to protect the intermediate layer 2 during transportation and packaging, but to remove it during use. Therefore, there is a dividing groove 9 in the center of the bottom release film layer 1, and a dividing groove indicator 10 is arranged on both sides. The force is applied in the direction of the dividing groove operation instruction 10, and the bottom release film layer 1 can be peeled off.

Such a water-absorbent hydrogel dressing patch is very convenient to be fixed on the skin, but the two-part bottom release film layer 1 may sometimes be difficult to tear due to incomplete cutting, or because the dividing groove 9 is above the wound, tearing off The bottom release film layer 1 touches the wound at the time, causing discomfort to the patient. For this reason, the design of the bottom release film layer 1 has a different aspect, and an improved structure is shown in Fig. 2. In Fig. 2, the main structure of a hydrogel dressing is a first release film layer 11, a hydrogel layer 12, an elastic film layer 13 (breathable film layer, PU film), and a second release type. The film layer 14 and a third release film layer 15. The first release film layer 11 and the hydrogel layer 12 are temporarily bonded, and the hydrogel layer 12 and the elastic film layer 13 are stably bonded. For the convenience of use, the elastic film layer 13 and the first release film layer 11 are also temporarily bonded. As long as the first release film layer 11 is torn off, the hydrogel layer 12 can be solidified by the elastic film layer 13. On the skin wound. The above structure is no different from the conventional techniques. However, this improved structure is characterized in that the release film layer above the elastic film layer 13 is divided into two. Although the second release film layer 14 and the third release film layer 15 partially partially adhere to the elastic film layer 13, the other portion of the third release film layer 15 is folded back, and the second separation Another portion of the film layer 14 covers the reflexed portion of the third release film layer 15.

Such an improved structure can avoid contact between the wound and the reduction User's discomfort. In addition, since the third release film layer 15 partially lifts up the second release film layer 14, the user can first tear off the second release film layer 14, and then tear off the third release film layer 15, using Convenience. However, such a structure has the following problems: First, the material is used more than the conventional single release film layer. Since the second release film layer 14 and the third release film layer 15 are consumables that are not used for wounds, the more they are used, the more waste of resources. Second, the process increases. In addition to the one-time release film bonding process, a work of folding the third release film layer 15 is added.

Based on the long-term experience in the development of hydrogel dressings, the creator proposed a hydrogel dressing with an easily peelable protective film layer. The innovative peelable protective film layer of the hydrogel dressing (corresponding to the release film layer of the previous case) can effectively solve the aforementioned problems.

In order to solve the foregoing problems, the present invention provides a hydrogel dressing having an easily peelable protective film layer, having at least one bottom release paper layer, a hydrogel layer temporarily adhered to the at least one bottom release paper layer, and including a A layer of gas permeable layer that is pressure sensitive and adheres to the layer of hydrogel. The utility model is characterized in that: a protective film layer temporarily adhered to a part of the gas permeable film layer; the protective film layer is divided into two adjacent portions; a dividing groove is sandwiched between the two portions of the protective film layer, and the dividing groove is surrounded The protective film layer does not temporarily adhere to the gas permeable film layer, and the top view shape of the protective film layer is wavy, zigzag or any irregular shape.

According to the concept of the case, the split slot is cut by kiss The method of construction, the complete protective film material is all two.

According to the present concept, the width of the dividing groove does not exceed 0.1 mm.

According to the concept of the present invention, the gas permeable membrane layer can be made of polyurethane (PU), thermoplastic polyurethane (TPU), polytetrafluoroethene (PTFE) or polyethylene (PE). .

According to the concept of the present invention, the protective film layer may be made of polyethylene terephthalate (PET), oriented polypropylene (OPP) or polyethylene (PE), or the protective film layer is away from Formed by paper.

The unadhered portion between the left half of the protective film layer and the right half of the protective film layer is easily lifted at the end of the dividing groove. The upwardly wavy portions are interlaced with each other to facilitate finger gripping and tearing away from the left half of the protective film layer and the right half of the protective film layer. However, in the foregoing operation, the underlying wound is not indirectly pressed, causing discomfort to the patient, thus solving the aforementioned problems.

1‧‧‧Bottom release film

2‧‧‧Intermediate

3‧‧‧Water-absorbing hydrogel layer

4‧‧‧First upper release paper layer

5‧‧‧Second upper release paper layer

6‧‧‧Operation printing

7‧‧‧Cut line

8‧‧‧pressure layer

9‧‧‧Segmentation slot

10‧‧‧Division slot operation instructions

11‧‧‧First release film

12‧‧‧Hydrogel layer

13‧‧‧Elastic film

14‧‧‧Separate release film

15‧‧‧ Third release film

100‧‧‧Bottom release paper layer

200‧‧‧ hydrogel layer

300‧‧‧ breathable membrane

310‧‧‧pressure layer

410‧‧‧The left half of the protective film

420‧‧‧The right half of the protective film

430‧‧‧ split slot

Figure 1 is a schematic view of the structure of a conventional hydrogel dressing.

Figure 2 is a schematic view showing the structure of another conventional hydrogel dressing.

Figure 3 is a schematic cross-sectional view showing the structure of a hydrogel dressing according to the present invention.

Figure 4 is a top view of the second protective film layer of the hydrogel dressing.

Fig. 5 is a view showing the state before the second protective film layer is peeled off.

Figure 6 is a top view of another protective film layer of the hydrogel dressing.

Figure 7 is a top view of yet another protective film layer of the hydrogel dressing.

The specific content of this creation is illustrated in conjunction with Figures 3 through 7 of the drawings. As shown in FIG. 3, the present invention discloses a hydrogel dressing having an easily peelable protective film layer having a bottom release paper layer 100 and a hydraulic coagulation temporarily adhered to the bottom release paper layer 100. The adhesive layer 200, a gas permeable film layer 300 comprising a pressure sensitive adhesive layer 310 and adhered to the hydrogel layer 200, and a protective film layer temporarily adhered to the partial gas permeable film layer 300. The foregoing protective film layer is divided into two parts: a protective film layer left half 410 and a protective film layer right half 420, and a dividing groove 430 is sandwiched between the two portions. For convenience of explanation, the thickness of each element in Fig. 3 is proportional to the width. That is, the actual product will be thinner than shown in Figure 3. The details of the construction and function of each structure are explained below.

The hydrogel layer 200 can be prepared from a hydrogel-bound substrate, and the creation does not limit the method, material, shape and size thereof. It should be noted that the hydrogel layer 200 is characterized by the ability to absorb exudates from human skin wounds, to maintain the wound moist, and to isolate external sources of contamination. The material of the bottom release paper layer 100 is not limited, and a release paper which is generally commercially available can be used for bonding to form the release paper layer 100. In addition to being temporarily adhered to the hydrogel layer 200, the release paper layer 100 is temporarily adhered to the pressure-sensitive adhesive layer 310. In addition to protecting the hydrogel layer 200, it also protects the pressure sensitive adhesive layer 310 which will adhere to human skin in the future, from dust and viscosity. Although there is only one piece of the bottom release paper layer 100 shown in FIG. 3, However, the number is not limited to one. As long as it can be effectively removed and facilitated production, a plurality of bottom release liner layers 100 are also within the scope of this creation.

The outer shape of the gas permeable membrane layer 300 approximates a square with rounded corners. In practice, according to different wound position design, different shapes can also be adopted, such as triangles, rectangles, and even any special shapes. The creation does not limit its shape. In the present embodiment, the gas permeable membrane layer 200 is made of polyurethane (PU). Alternatively, thermoplastic polyurethane (TPU), polytetrafluoroethene (PTFE) or polyethylene (PE) is also an alternative material. The pressure sensitive adhesive used in the pressure sensitive adhesive layer 310 is generally classified into four types: a rubber type, an acrylic type, a silicone type, and a PU type. There is no limit to the use. However, in order to meet the requirements of the gas permeable and waterproof properties of the gas permeable membrane layer 300, the pressure sensitive adhesive is preferably made of an acrylic or PU material.

The function of the protective film layer (including the left half 410 of the protective film layer and the right half 420 of the protective film layer) is to temporarily protect the gas permeable film layer 300 from being scratched or torn before use. The outer shape of the protective film layer left half 410 and the protective film layer right half 420 as a whole is substantially similar to or slightly larger than the outer shape of the gas permeable film layer 300, and preferably the sides can be aligned. In the present embodiment, the material of the left half 410 of the protective film layer and the right half 420 of the protective film layer is polyethylene terephthalate (PET). Some suitable materials, such as Oriented polypropylene (OPP) or polyethylene (PE), may also be used as the material for the left half 410 of the protective film layer and the right half 420 of the protective film layer. If you want to simply set As a rule, the release film left half 410 and the protective film layer right half 420 may also use a release paper.

The dividing groove 430 sandwiched between the two portions of the protective film layer has a wave shape in the upper view (as shown in FIG. 4). The formation of the dividing groove 430 can be performed by cutting the left half 410 of the protective film layer and the right half 420 of the protective film layer, respectively, and bonding the gas permeable film layer 300 thereto. However, the method of attaching each is not suitable, and it is easy to cause a difference in alignment, thereby forming a dividing groove 430 having a wide and narrow width. The dividing groove 430 is preferably formed by adhering to the gas permeable film layer 300 by a kiss cut method, and the entire protective film layer material is two. Due to the light touch cutting method, the dividing groove 430 can be made very precise and does not damage the gas permeable film layer 300 under the protective film layer material, and the width of the dividing groove 430 can be very fine. In practice, the width is preferably no more than 0.1 mm.

The biggest difference between the dividing groove 430 and the prior art is that it is not in a straight line, and the protective film layer around the dividing groove 430 does not temporarily adhere to the gas permeable film layer 300, which includes the left half of the protective film layer in FIGS. 4 and 5. The portion between the portion 410 and the dotted line of the right half 420 of the protective film layer. The disadvantages of the linear dividing groove have been described in the prior art and will not be described again here. The advantage of forming a wave shape is that when the hydrogel dressing is fixed to the skin by the pressure sensitive adhesive layer 310, the surface shape of the hydrogel dressing will change as the skin is not perfectly flat, and the left half of the protective film layer 410 The unadhered portion with the right half 420 of the protective film layer is easily lifted at the end of the dividing groove 430 (as shown in Fig. 5). The upwardly wavy portions are interlaced with each other to facilitate finger gripping, and then tear away from the left half 410 of the protective film layer and the right half of the protective film layer. Part 420. However, in the operation, it does not indirectly touch the wound below, causing discomfort.

According to the spirit of the present creation, the shape of the aforementioned dividing groove 430 is not limited to a wave shape. In other embodiments, the dividing groove 430 may be in the shape of a zigzag (as shown in Fig. 6) or even any irregular shape (as shown in Fig. 7). It should be noted that although the dividing groove 430 may be in any irregular shape according to the intended special purpose, the width therebetween shall be uniform and not too large, so as not to achieve the purpose of protecting the lower gas permeable film layer 300.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any person skilled in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of protection of this creation is subject to the definition of the scope of the patent application attached.

100‧‧‧Bottom release paper layer

200‧‧‧ hydrogel layer

300‧‧‧ breathable membrane

310‧‧‧pressure layer

410‧‧‧The left half of the protective film

420‧‧‧The right half of the protective film

430‧‧‧ split slot

Claims (6)

A hydrogel dressing having an easily peelable protective film layer, having at least one bottom release paper layer, a hydrogel layer temporarily adhered to the at least one bottom release paper layer, and comprising a pressure sensitive adhesive layer and adhered thereto a gas permeable film layer on the hydrogel layer, characterized in that: a protective film layer temporarily adhered to a portion of the gas permeable film layer; the protective film layer is divided into two adjacent portions; A portion of the dividing groove is sandwiched between the portions, and the protective film layer around the dividing groove is not temporarily adhered to the gas permeable film layer, and the upper surface of the protective film layer has a wave shape, a zigzag shape or an arbitrary irregular shape. The hydrogel dressing of claim 1, wherein the dividing groove has a complete protective film layer material by a kiss cut method. The hydrogel dressing of claim 2, wherein the dividing groove has a width of no more than 0.1 mm. The hydrogel dressing according to claim 1, wherein the gas permeable membrane layer is composed of polyurethane (PU), thermoplastic polyurethane (TPU), and polytetrafluoroethene (Polytetrafluoroethene). Made of PTFE) or polyethylene (PE). The hydrogel dressing according to claim 1, wherein the protective film layer is made of polyethylene terephthalate (PET), oriented polypropylene (OPP) or polyethylene (PE). ) made. The hydrogel dressing of claim 1, wherein the protective film layer Formed for release paper.