Aseptic side penetration resistant gauze pad

Abstract

This invention discloses a sterile anti-lateral leakage gauze pad, comprising a gauze pad body. The gauze pad body is a composite structure formed by sequentially stacking and hot-pressing a surface layer, a middle absorbent layer, and a bottom layer. The middle absorbent layer has a gradient density structure. An anti-lateral leakage layer is formed in the annular area at the edge of the surface layer of the gauze pad body by ultrasonic welding. A self-adhesive fixing strip extends from the edge of the bottom layer and is integrated with the gauze pad body. This invention achieves efficient liquid absorption and zero lateral leakage through the design of the annular anti-lateral leakage layer and the gradient absorbent layer. The bottom microporous PE membrane combines breathability and anti-permeability functions, and the edge self-adhesive strip simplifies the fixing process. It is suitable for the care of high-exudate wounds and has significant clinical applicability.

Description

Technical Field

[0001] This utility model relates to the field of medical gauze technology, and in particular to a sterile anti-lateral permeation gauze pad, which is suitable for wound care of postoperative wounds, burns, ulcers and other wounds with a large amount of exudate. Background Technology

[0002] Medical gauze pads are widely used in the medical field, typically for cleaning or bandaging wounds. They are often an essential hygiene consumable in first aid kits at home or during outdoor travel. Traditional medical gauze is easily permeable and has poor breathability. When used to bandage or cover a patient's wound, it quickly becomes wet, causing bodily fluids to leak out and failing to achieve the effects of hemostasis, absorption, or isolation. Using a thicker gauze pad is slightly better than using gauze alone. Gauze pads have a certain thickness and contain medical cotton in the middle, which can store more bodily fluids than medical gauze.

[0003] Traditional gauze pads pose a risk of side leakage, as liquid can easily seep out from the edges of the gauze, contaminating the surrounding skin or dressing. The bottom layer material is too occlusive, leading to moist skin and increasing the risk of infection. Furthermore, the absorbent and anti-leakage layers are not tightly bonded, making it impossible to achieve both high-efficiency absorption and leak prevention. Utility Model Content

[0004] To address the aforementioned technical problems, a sterile anti-lateral permeation gauze pad is provided, which achieves directional flow and locking of liquid through an annular anti-permeation layer and a gradient absorption structure.

[0005] To achieve the above objectives, this utility model discloses a sterile anti-lateral leakage gauze pad, including a gauze pad body. The gauze pad body is a composite structure formed by sequentially stacking a surface layer, a middle absorbent layer, and a bottom layer and then hot-pressing them. The middle absorbent layer has a gradient density structure inside. The gauze pad body forms an anti-lateral leakage layer in the annular area at the edge of the surface layer by ultrasonic welding. A self-adhesive fixing strip, which is integrated with the gauze pad body, extends from the edge of the bottom layer.

[0006] Furthermore, the surface layer of hydrophilic nonwoven fabric has a basis weight of 40 g / m².

[0007] Furthermore, the intermediate absorbent layer is a mixture of superabsorbent polymer and degreased cotton fiber, wherein the superabsorbent polymer accounts for 20% to 40%, and the intermediate absorbent layer includes a first absorbent layer, a second absorbent layer, and a third absorbent layer whose density decreases from the surface layer to the bottom layer.

[0008] Furthermore, the bottom layer is made of microporous PE breathable membrane with a pore size of 5μm to 10μm and an air permeability of ≥2000g / m² / 24h.

[0009] Furthermore, the anti-lateral seepage layer is made of hydrophobic nonwoven fabric or TPU film, and the width of the annular area of ​​the anti-lateral seepage layer is 3mm to 5mm, and the thickness is 0.1mm.

[0010] Furthermore, the self-adhesive fixing strip is made of pressure-sensitive adhesive tape, and the surface of the pressure-sensitive adhesive tape facing the surface layer is covered with release paper.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model discloses a sterile anti-lateral leakage gauze pad, which achieves efficient liquid absorption and zero lateral leakage through the design of an annular anti-lateral leakage layer and a gradient absorption layer. The bottom microporous PE membrane takes into account both air permeability and anti-permeability functions, and the edge self-adhesive strip simplifies the fixation process. It is suitable for the care of high exudate wounds and has significant clinical applicability. Attached Figure Description

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0013] Figure 1 This is a schematic diagram of the internal structure of this utility model.

[0014] Figure 2 This is a top view of the present invention.

[0015] In the diagram: 1 is the surface layer; 2 is the intermediate absorbent layer; 21 is the first absorbent layer; 22 is the second absorbent layer; 23 is the third absorbent layer; 3 is the bottom layer; 4 is the anti-lateral seepage layer; and 5 is the self-adhesive fixing strip. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] One embodiment of this utility model is as follows: Figure 1 and Figure 2 As shown, the gauze pad body is a composite structure formed by sequentially stacking and hot-pressing an outer layer 1, an intermediate absorbent layer 2, and a bottom layer 3. An anti-lateral leakage layer 4 is formed by ultrasonic welding at the annular area of ​​the edge of the outer layer 1. A self-adhesive fixing strip 5, which is integrated with the gauze pad body, extends from the edge of the bottom layer 3, reducing the use of auxiliary materials. Through the design of the annular anti-lateral leakage layer and the gradient absorbent layer, efficient liquid absorption and zero lateral leakage are achieved. The bottom microporous PE membrane takes into account both breathability and anti-permeability functions. The edge self-adhesive strip simplifies the fixing process and is suitable for the care of high exudate wounds, with significant clinical applicability.

[0018] The surface layer 1 is a hydrophilic nonwoven fabric with a basis weight of 40 g / m², used to quickly guide liquid to the intermediate absorbent layer.

[0019] The intermediate absorbent layer 2 is a mixture of superabsorbent polymer and degreased cotton fiber, wherein the superabsorbent polymer accounts for 20% to 40%, specifically using a unique polymer (SAPs) composed of vinyl alcohol and acrylic acid copolymer. When it comes into contact with water, it absorbs water and swells in a short time and retains it within the body, exhibiting excellent water absorption and moisture retention capabilities. When the water-absorbed and swelled polymer is squeezed, only a small amount of water is released, maintaining excellent water retention capabilities. Moreover, it remains stable when exposed to heat or ultraviolet radiation. The intermediate absorbent layer 2 includes a first absorbent layer 21, a second absorbent layer 22, and a third absorbent layer 23, with the density decreasing from the surface layer 1 to the bottom layer 3. This gradient density structure enables rapid absorption and storage of liquids.

[0020] The bottom layer 3 uses a microporous PE breathable membrane with a pore size of 5μm~10μm and an air permeability of ≥2000g / m² / 24h. It allows water vapor to pass through from the inside and prevents liquid from penetrating back from the outside, thus reducing skin immersion.

[0021] As a preferred embodiment of this application, the anti-lateral seepage layer 4 is a TPU film with a thickness of 0.1 mm. The width of the annular area of ​​the anti-lateral seepage layer 4 is 3 mm. The annular hydrophobic layer surrounds the edge of the gauze pad body to form a closed annular edge by ultrasonic waves or hot pressing, which blocks the lateral diffusion of liquid, prevents side seepage, and reduces the risk of pollution.

[0022] The self-adhesive fixing strip 5 uses pressure-sensitive adhesive tape. The surface of the pressure-sensitive adhesive tape facing the surface layer 1 is covered with release paper to avoid skin damage caused by traditional tape fixing, making it suitable for sensitive patients.

[0023] The production process of this embodiment is as follows: the outer layer, the middle absorbent layer and the bottom layer are stacked in the order of hot pressing and composite molding. The edge area of ​​the outer layer is ultrasonically welded using a mold to form an anti-lateral leakage layer. After cutting, it is sterilized with ethylene oxide or irradiation. The outer layer of the gauze pad with the anti-lateral leakage layer is placed around the patient's wound. The release paper on the surface of the pressure-sensitive adhesive tape is peeled off and attached to the skin surface.

[0024] Several points need to be clarified: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, or internal connections between two components, or direct connections. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships, and the relative positional relationships may change when the absolute position of the described objects changes. Second, in this document, relational terms such as "first" and "second" are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between these entities.

[0025] The above examples are merely illustrative of this utility model and do not constitute a limitation on the scope of protection of this utility model. All designs that are the same as or similar to this utility model are within the scope of protection of this utility model.

Claims

1. A sterile anti-lateral leakage gauze pad, comprising a gauze pad body, characterized in that, The gauze pad body is a composite structure formed by sequentially stacking the surface layer (1), the middle absorbent layer (2) and the bottom layer (3) and hot pressing. The middle absorbent layer (2) has a gradient density structure inside. The gauze pad body forms an anti-side seepage layer (4) by ultrasonic welding in the annular area at the edge of the surface layer (1). The bottom layer (3) extends out a self-adhesive fixing strip (5) that is integrated with the gauze pad body.

2. A sterile anti-lateral leakage gauze pad according to claim 1, characterized in that, The surface layer (1) has a hydrophilic nonwoven fabric with a basis weight of 40 g / m².

3. A sterile anti-lateral leakage gauze pad according to claim 1, characterized in that, The intermediate absorption layer (2) is a mixture of superabsorbent polymer and degreased cotton fiber, wherein the superabsorbent polymer accounts for 20% to 40%, and the intermediate absorption layer (2) includes a first absorption layer (21), a second absorption layer (22) and a third absorption layer (23) whose density decreases from the surface layer (1) to the bottom layer (3).

4. A sterile anti-lateral leakage gauze pad according to claim 1, characterized in that, The bottom layer (3) is made of microporous PE breathable membrane with a pore size of 5μm~10μm and an air permeability of ≥2000g / m² / 24h.

5. A sterile anti-lateral leakage gauze pad according to claim 1, characterized in that, The anti-lateral seepage layer (4) is made of hydrophobic nonwoven fabric or TPU film. The width of the annular area of ​​the anti-lateral seepage layer (4) is 3mm to 5mm and the thickness is 0.1mm.

6. A sterile anti-lateral leakage gauze pad according to claim 1, characterized in that, The self-adhesive fixing strip (5) is made of pressure-sensitive adhesive tape, and the surface of the pressure-sensitive adhesive tape facing the surface layer (1) is covered with release paper.

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