Breathable bacterial cellulose dressing

Abstract

The utility model provides a breathable bacterial cellulose dressing. The breathable bacterial cellulose dressing comprises a backing layer and a bacterial cellulose layer, the cellulose liquid absorption layer is fixedly attached to the middle part above the back lining layer; the spherical isolation layer is partially embedded above the cellulose liquid absorption layer; and the release layer is adhered to the upper part of the spherical isolating layer. According to the breathable bacterial cellulose dressing, a miniature air passage can be formed between a wound and the dressing, proper breathability is kept, the problems of inflammation, redness and swelling caused by the fact that the wound is soaked in percolate are solved, meanwhile, the soft sphere structure makes contact with the wound softly and comfortably, and patient compliance is good.

Description

Technical Field

[0001] The utility model relates to the technical field of medical supplies, in particular to a breathable bacterial cellulose dressing. Background Art

[0002] As an important organ of the human body, the skin is a barrier between the human body and the external environment, which can protect the body's tissues and organs from external mechanical, chemical and pathogenic microorganisms. Due to trauma, abrasions, burns and surgical operations, the skin is prone to bacterial infection, fluid loss and related complications after being damaged. In existing medical technology, cotton gauze dressings are generally used to perform simple physical protection on the wound. The gauze or absorbent core is in direct contact with the wound. Due to poor air permeability, the exudate cannot be quickly absorbed, resulting in inflammation, redness, swelling and adhesion of the wound. At the same time, when suffering a secondary accidental collision, the wound directly bears the impact, causing secondary injuries and pain to the patient. Therefore, it is very necessary to provide a new dressing with a scientific structure, good air permeability, strong liquid absorption capacity and good buffering capacity.

[0003] Bacterial cellulose has many unique physical, chemical and mechanical properties, such as high crystallinity, high purity, high water holding capacity, unique three-dimensional network structure, high tensile strength and elastic modulus. At the same time, bacterial cellulose has high water holding capacity, and there are many "pores" inside it, which has good air and water permeability. It can absorb 60-700 times its dry weight of water and has high wet strength. A large number of studies have shown that bacterial cellulose has good in vivo and in vitro biocompatibility and good biodegradability, can relieve pain, promote wound healing, and does not contain toxic substances. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a breathable bacterial cellulose dressing, which has good air permeability, strong liquid absorption capacity and good buffering capacity.

[0005] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0006] A breathable bacterial cellulose dressing, comprising:

[0007] A backing layer for adhering to the skin surface;

[0008] a cellulose liquid-absorbing layer fixedly attached to the middle portion above the backing layer;

[0009] a spherical isolation layer partially embedded above the cellulose liquid-absorbing layer;

[0010] A release layer is adhered to the spherical isolation layer.

[0011] Optionally, the spherical isolation layer includes a plurality of soft spheres, and the plurality of soft spheres are embedded in the cellulose liquid-absorbing layer.

[0012] Optionally, the depth of the multiple soft spheres embedded in the cellulose liquid-absorbing layer is 1 / 3 to 2 / 3 of the diameter of the soft spheres.

[0013] Optionally, the plurality of soft spheres are distributed in a matrix on the cellulose liquid-absorbing layer.

[0014] Optionally, the soft sphere of the spherical isolation layer is made of medical silicone gel or polyurethane, and the diameter of the soft sphere is 0.5 to 1.5 cm.

[0015] Optionally, the release layer is made of a single silicon glassine release paper, and the single silicon glassine release paper has a gram weight of 60 to 80 g / m 2 .

[0016] Optionally, the cellulose liquid absorption layer is a three-dimensional mesh porous structure composed of bacterial cellulose, and the liquid absorption multiple of the cellulose liquid absorption layer is ≥50.

[0017] Optionally, the backing layer is a polyethylene or polyurethane transparent film coated with a pressure-sensitive adhesive, with a thickness of 0.5 to 1.5 mm.

[0018] Optionally, the release layer and the backing layer have the same area.

[0019] Optionally, the cellulose liquid-absorbing layer is 0.5-0.8 times the area of ​​the release layer and the backing layer.

[0020] The above solution of the utility model includes at least the following beneficial effects:

[0021] The above scheme of the utility model can form micro air channels on the surface of the wound, maintain appropriate air permeability, and reduce inflammation and redness caused by exudate soaking into the wound; at the same time, when the wound is subjected to an accidental collision, the contact area between the dressing and the wound can be increased due to the provision of the spherical isolation layer, thereby reducing surface stress and alleviating pain. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the decomposition structure of the breathable bacterial cellulose dressing of the utility model;

[0023] Figure 2 It is a cross-sectional schematic diagram of the breathable bacterial cellulose dressing of the utility model. DETAILED DESCRIPTION

[0024] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0025] like Figure 1 and Figure 2 As shown, an embodiment of the utility model proposes a breathable bacterial cellulose dressing, comprising: a backing layer 4 for adhering to the skin surface; a cellulose liquid-absorbing layer 3 fixedly attached to the middle part above the backing layer 4; a spherical isolation layer 2 partially embedded above the cellulose liquid-absorbing layer 3; and a release layer 1 adhered above the spherical isolation layer 2.

[0026] This embodiment, through the backing layer 4 for sticking to the skin surface; the cellulose liquid absorption layer 3 fixedly attached to the middle part above the backing layer 4; the spherical isolation layer 2 partially embedded above the cellulose liquid absorption layer 3; the release layer 1 attached above the spherical isolation layer 2, can form micro air channels on the wound surface to maintain appropriate air permeability and reduce inflammation and redness caused by exudate soaking into the wound; at the same time, when the wound suffers an accidental collision, the contact area between the dressing and the wound can be increased due to the provision of the spherical isolation layer 2, thereby reducing surface stress and alleviating pain.

[0027] In an optional embodiment of the utility model, the spherical isolation layer 2 includes a plurality of soft spheres, and the plurality of soft spheres are embedded in the cellulose liquid-absorbing layer 3; due to the provision of the soft spheres, the contact area between the dressing and the wound can be increased, the surface stress can be reduced, and the pain can be alleviated.

[0028] In an optional embodiment of the utility model, the depth of embedding the multiple soft spheres into the cellulose liquid absorbing layer 3 is 1 / 3 to 2 / 3 of the diameter of the soft spheres; since the multiple soft spheres are embedded into the cellulose liquid absorbing layer 3 to a certain depth, the firmness of the multiple soft spheres can be increased and the combination can be more tightly.

[0029] In an optional embodiment of the present invention, the plurality of soft spheres are distributed in a matrix on the cellulose liquid-absorbing layer 3; such a matrix-shaped distribution can make the plurality of soft spheres evenly distributed and make the appearance more beautiful.

[0030] In an optional embodiment of the utility model, the soft sphere of the spherical isolation layer 2 is made of medical silicone gel or polyurethane, and the diameter of the soft sphere is 0.5 to 1.5 cm; medical silicone gel or polyurethane has good elasticity and durability, so that the soft sphere can play a better wound protection role.

[0031] In an optional embodiment of the present invention, the release layer 1 is made of a single silicon glassine release paper, and the single silicon glassine release paper has a gram weight of 60 to 80 g / m 2 The monosilicone glassine release paper is compact and can effectively protect the inner core structure of the dressing from being squeezed, deformed, or contaminated.

[0032] In an optional embodiment of the utility model, the cellulose liquid-absorbing layer 3 is a three-dimensional mesh porous structure composed of bacterial cellulose, and the liquid absorption multiple of the cellulose liquid-absorbing layer 3 is ≥50; the bacterial cellulose has high water holding capacity, and has many "pores" inside, has good air permeability and water permeability, can absorb 60-700 times its dry weight of water, and has high wet strength. At the same time, the bacterial cellulose also has good in vivo and in vitro biocompatibility and good biodegradability, can relieve pain, promote wound healing, and does not contain toxic substances.

[0033] In an optional embodiment of the utility model, the backing layer 4 is a polyethylene or polyurethane transparent film coated with a pressure-sensitive adhesive, and has a thickness of 0.5 to 1.5 mm; the polyethylene or polyurethane transparent film coated with a pressure-sensitive adhesive has excellent flexibility and appropriate elasticity, which can increase the comfort and compliance of the dressing; its transparent structure can observe the skin condition around the wound to judge the usage of the dressing and replace it in time.

[0034] In an optional embodiment of the utility model, the release layer 1 and the backing layer 4 have the same area; this design can ensure that no excess part of the release layer 1 or the backing layer 4 is exposed to the outside, making the dressing easy to store, convenient to use, and beautiful in appearance.

[0035] In an optional embodiment of the present invention, the cellulose liquid absorbing layer 3 is 0.5-0.8 times the area of ​​the release layer 1 and the backing layer 4; this configuration can reduce the use area of ​​the cellulose liquid absorbing layer 3 while ensuring the use effect.

[0036] When using the breathable bacterial cellulose dressing of the utility model, first perform conventional wound cleaning on the wound surface, open the inner packaging bag in a sterile manner, take out the product, tear off the release layer 1, place the spherical isolation layer 2 of the product close to the wound surface, and gently press the backing layer 4 to firmly bond the dressing to the skin around the wound surface.

[0037] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A breathable bacterial cellulose dressing, characterized in that: include: A backing layer (4) for adhering to the skin surface; A cellulose liquid-absorbing layer (3) fixedly attached to the middle portion above the backing layer (4); A spherical isolation layer (2) partially embedded above the cellulose liquid-absorbing layer (3); A release layer (1) is adhered to the spherical isolation layer (2).

2. The breathable bacterial cellulose dressing according to claim 1, characterized in that: The spherical isolation layer (2) comprises a plurality of soft spheres, and the plurality of soft spheres are embedded in the cellulose liquid-absorbing layer (3).

3. The breathable bacterial cellulose dressing according to claim 2, characterized in that: The depth to which the multiple soft spheres are embedded in the cellulose liquid-absorbing layer (3) is 1 / 3 to 2 / 3 of the diameter of the soft spheres.

4. The breathable bacterial cellulose dressing according to claim 3, characterized in that: The multiple soft spheres are distributed in a matrix on the cellulose liquid-absorbing layer (3).

5. The breathable bacterial cellulose dressing according to any one of claims 2 to 4, characterized in that: The soft sphere of the spherical isolation layer (2) is made of medical silicone gel or polyurethane, and the diameter of the soft sphere is 0.5 to 1.5 cm.

6. The breathable bacterial cellulose dressing according to claim 1, characterized in that: The release layer (1) is made of a single silicon glassine release paper, and the single silicon glassine release paper has a grammage of 60 to 80 g / m 2 .

7. The breathable bacterial cellulose dressing according to claim 1, characterized in that: The cellulose liquid absorption layer (3) is a three-dimensional mesh porous structure composed of bacterial cellulose, and the liquid absorption multiple of the cellulose liquid absorption layer (3) is ≥50.

8. The breathable bacterial cellulose dressing according to claim 1, characterized in that: The backing layer (4) is a polyethylene or polyurethane transparent film coated with a pressure-sensitive adhesive, and has a thickness of 0.5 to 1.5 mm.

9. The breathable bacterial cellulose dressing according to claim 1, characterized in that: The release layer (1) and the backing layer (4) have the same area.

10. The breathable bacterial cellulose dressing according to claim 9, characterized in that: The cellulose liquid-absorbing layer (3) is 0.5-0.8 times the area of ​​the release layer (1) and the backing layer (4).

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