A dressing and a composite dressing structure including the same

Abstract

The utility model discloses a kind of dressing and composite dressing structure comprising the dressing.A kind of dressing, including mutual mixing gelatinous fiber and chemical fiber, at least part gelatinous fiber and chemical fiber are adhered together.Affirmative effect: improve the strength of dressing, so that after absorbing the tissue permeate of patient, still enough strength can be maintained, so that after absorbing moisture, reduce or avoid having dressing remaining on the patient when medical staff removes dressing from patient, reduce or avoid secondary injury to patient.

Description

Technical Field

[0001] This utility model relates to the field of medical care products technology, and in particular to a dressing and a composite dressing structure including the dressing. Background Technology

[0002] Dressings are products used to cover wounds, sores, or other lesions. With in-depth research into the pathophysiology of the wound healing process, our understanding of the wound healing process is becoming increasingly profound, and medical wound dressings are constantly being improved and developed.

[0003] Existing dressings are generally made of one or more of the following: modified cellulose fibers and their derivatives, chitosan fibers and their derivatives, alginate fibers and their derivatives, polyvinyl alcohol fibers and their derivatives, protein fibers and their derivatives, and bacterial cellulose fibers and their derivatives. They are highly absorbent and can effectively absorb wound exudate. However, after absorbing liquid, the strength of these dressings decreases significantly, making it difficult for healthcare workers to remove the entire dressing at once when changing it. Part of the dressing remains on the patient, requiring secondary cleaning and potentially causing further injury. Utility Model Content

[0004] The main purpose of this invention is to propose a dressing that aims to solve the technical problem that the strength of dressings decreases significantly after absorbing moisture in the prior art.

[0005] To achieve the above objectives, this utility model proposes a dressing comprising a mixture of gelling fibers and chemical fibers, wherein at least a portion of the gelling fibers and chemical fibers are bonded together.

[0006] The beneficial effects of this invention are as follows: In addition to commonly used gelling fibers, the dressing of this invention also includes high-strength chemical fibers. By mixing and bonding the gelling fibers and chemical fibers, the strength of the dressing is improved, so that the dressing can still maintain sufficient strength after absorbing the patient's tissue exudate. This reduces or avoids dressing residue on the patient when medical staff remove the dressing after it has absorbed moisture, thus reducing or avoiding secondary harm to the patient.

[0007] Preferably, the gelling fibers and chemical fibers are partially bonded together, and a depression is formed on the dressing surface corresponding to the bonding position. The dressing has multiple depressions, which are evenly distributed on the dressing surface, so that the strength of each part of the dressing is basically the same, thereby improving the quality of the dressing.

[0008] Preferably, multiple recesses are interconnected to form a mesh structure on the dressing surface, which helps to strengthen the connection and stability between different parts of the dressing, thereby further improving the strength of the dressing.

[0009] Preferably, the dressing also includes quilting thread for sewing together the rubber fibers and chemical fibers. The quilting thread is close to and extends along the edge of the dressing, which helps to reduce the possibility of the dressing coming undone and ensures the stability of the dressing structure.

[0010] Preferably, the chemical fibers include one or more of PP-PE bicomponent fibers, PP fibers, PE fibers, and polyester fibers, and the rubber-forming fibers include one or more of modified cellulose fibers and their derivatives, chitosan fibers and their derivatives, alginate fibers and their derivatives, polyvinyl alcohol fibers and their derivatives, protein fibers and their derivatives, and bacterial cellulose fibers and their derivatives. This is beneficial for shortening the processing time and strengthening the adhesion stability between the rubber-forming fibers and the chemical fibers, thereby improving production efficiency and dressing quality.

[0011] Preferably, the weight ratio of rubber-forming fibers to chemical fibers is 7~27:3, which helps to balance the tensile strength and absorbency of the dressing, making the dressing more suitable for the user's needs.

[0012] Preferably, the weight ratio of gelling fiber to chemical fiber is 17:3, which achieves a better balance between the tensile strength and absorbency of the dressing, and better meets the needs of users.

[0013] Preferably, the needle-punching density of the mixture of rubber-forming fibers and chemical fibers is 150~300 times / m, so that the dressing can be strengthened while its moisture absorption capacity can still be guaranteed.

[0014] This utility model also discloses a composite dressing structure, including the above-mentioned dressing; it also includes a protective layer and a release layer, the protective layer, the dressing and the release layer are arranged in sequence, the protective layer includes a polyurethane film and / or a hydrocolloid film and / or a non-woven fabric, and the release layer includes release paper or a release film, which helps to strengthen the overall strength of the composite dressing structure, enhance the liquid-locking ability of the composite dressing structure, and prevent the absorbed permeate from easily seeping back into the wound.

[0015] Preferably, the composite dressing structure further includes an adhesive layer disposed between the dressing and the release layer. The adhesive layer includes one or more of polyurethane foam, hydrocolloid, and silicone adhesive, so that the composite dressing structure can be firmly adhered to the patient and reduce the patient's pain when it is removed from the patient. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the composite dressing structure in an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the adhesive fibers, chemical fibers, and recesses in the dressing in this embodiment of the present invention;

[0019] Figure 3 This is a top view of the dressing in an embodiment of the present invention;

[0020] Figure 4 This is a top view of the dressing when a mesh structure composed of multiple rhombuses is formed on the dressing in an embodiment of the present invention.

[0021] Figure 5 This is a top view of the dressing when a mesh structure composed of multiple squares is formed on the dressing in an embodiment of the present invention.

[0022] In the attached diagram: 1-gelling fiber, 2-chemical fiber, 3-recessed portion, 4-quilting thread, 5-mesh structure, 10-protective layer, 20-release layer, 30-adhesive layer, 40-dressing.

[0023] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] 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.

[0025] It should be noted that if the embodiments of this utility model involve directional indicators, such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0026] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0027] like Figures 1 to 5 As shown, a dressing 40 includes gelling fibers 1 and chemical fibers 2 mixed together, with at least a portion of the gelling fibers 1 and chemical fibers 2 bonded together.

[0028] In this embodiment, the dressing 40 includes not only the commonly used gelling fiber 1, but also a high-strength chemical fiber 2. By mixing and bonding the gelling fiber 1 and the chemical fiber 2, the strength of the dressing 40 is improved, so that the dressing 40 can still maintain sufficient strength after absorbing the patient's tissue exudate. This reduces or avoids the presence of dressing 40 residue on the patient when medical staff remove the dressing 40 after it has absorbed moisture, thereby reducing or avoiding secondary harm to the patient.

[0029] In some specific embodiments, reference is made to Figures 2 to 5 The adhesive fiber 1 and the chemical fiber 2 are partially bonded together, and a recess 3 is formed on the surface of the dressing 40 corresponding to the bonded position. The dressing 40 has multiple recesses 3, which are evenly distributed on the surface of the dressing 40.

[0030] Specifically, in this embodiment, the adhesive fibers 1 and chemical fibers 2 are partially bonded together using hot-melt or ultrasonic welding techniques. Regardless of which technique is used, a depression will be formed on the surface of the dressing 40, thus forming the aforementioned depression 3. In this embodiment, the adhesive fibers 1 and chemical fibers 2 at multiple locations on the dressing 40 are bonded together, resulting in the depressions 3 being distributed throughout the dressing 40. The even distribution of multiple depressions 3 on the surface of the dressing 40 ensures that the strength of each part of the dressing 40 remains essentially the same, improving the quality of the dressing 40.

[0031] Partially bonding the gelling fiber 1 and the chemical fiber 2 helps to improve the strength of the dressing 40 while ensuring that the dressing 40 still has a strong moisture absorption capacity.

[0032] Furthermore, recesses 3 are formed on both the upper and lower surfaces of the dressing 40, which helps to further improve the strength of the dressing 40.

[0033] In other embodiments, the dressing 40 includes a central dressing area and an edge dressing area, both of which have multiple recesses 3. The density of the recesses 3 in the central dressing area is greater than that in the edge dressing area. In this embodiment, the dressing 40 is specifically treated to provide more recesses 3 in the central dressing area, which is the main part used to absorb tissue exudate, so that the central dressing area still has high strength after moisture absorption.

[0034] In some other embodiments, the gelling fiber 1 is completely adhered to the chemical fiber 2.

[0035] In some specific embodiments, reference is made to Figure 4 and Figure 5 Multiple recesses 3 are interconnected to form a mesh structure 5 on the surface of the dressing 40.

[0036] Specifically, the recessed portion 3 is strip-shaped, and multiple recessed portions 3 are connected to each other to form a mesh structure 5 on the surface of the dressing 40. This helps to strengthen the connection and stability between the various parts of the dressing 40, thereby further improving the strength of the dressing 40. This makes it less likely that the dressing 40 will remain on the patient's body when the medical staff removes the dressing 40 after it has absorbed moisture.

[0037] Furthermore, the aforementioned mesh structure 5 is composed of multiple regular shapes of equal size. These regular shapes can be rhombuses, squares, hexagons, octagons, circles, etc., which helps to improve the aesthetics of the dressing 40 and also helps to ensure uniform strength in all parts of the dressing 40.

[0038] Furthermore, when the above-mentioned regular shape is a rhombus, refer to... Figure 4 The two diagonals of the rhombus are 25.4mm and 12.5mm in length, respectively. This design helps to improve the strength of Dressing 40 while ensuring its moisture absorption performance; moreover, these dimensions are commonly used parameters in mold design, facilitating mold design and production and improving production efficiency. If the above regular shape is a square, refer to... Figure 5 The side length of the square is 12.5mm.

[0039] Taking the aforementioned rhomboid mesh structure 5 as an example, and using modified cellulose fiber 1 and PP-PE bicomponent fiber 2 as examples, with a weight ratio of 85% to 15% for modified cellulose fiber and PP-PE bicomponent fiber, the tensile strength of dressing 40 is 17 N / cm before bonding the modified cellulose fiber and PP-PE bicomponent fiber. 2 After partially bonding modified cellulose fibers and PP-PE bicomponent fibers using hot-melt technology, and forming a rhomboid mesh structure 5 on the surface of dressing 40, the tensile strength of dressing 40 is 32 N / cm. 2 .

[0040] In some specific embodiments, reference is made to Figure 3 The dressing 40 also includes quilting thread 4 for sewing together the rubber fibers 1 and the chemical fibers 2, the quilting thread 4 being close to and extending along the edge of the dressing 40.

[0041] The edges and surrounding areas of the dressing 40 are more susceptible to external forces. By placing quilting threads 4 near the edges of the dressing 40 to sew together the adhesive fibers 1 and chemical fibers 2, the possibility of the dressing 40 coming apart can be reduced, ensuring the structural stability of the dressing 40, while not affecting the moisture absorption performance of the main part of the dressing 40.

[0042] In some specific embodiments, the chemical fiber 2 includes one or more of PP-PE bicomponent fiber, PP fiber, PE fiber and polyester fiber, and the rubber-forming fiber 1 includes one or more of modified cellulose fiber and its derivatives, chitosan fiber and its derivatives, alginate fiber and its derivatives, polyvinyl alcohol fiber and its derivatives, protein fiber and its derivatives and bacterial cellulose fiber and its derivatives.

[0043] PP-PE bicomponent fibers, PP fibers, PE fibers, and polyester fibers are all chemical fibers with low melting points and high strength. When bonding the adhesive fiber 1 and the chemical fiber 2 using a hot-melt method, using the low-melting-point chemical fiber in this embodiment helps to shorten the processing time, enhance the adhesion stability between the adhesive fiber 1 and the chemical fiber 2, thereby improving production efficiency and the quality of the dressing 40.

[0044] In some specific embodiments, the weight ratio of gelling fiber 1 to chemical fiber 2 is 7~27:3.

[0045] Taking modified cellulose fiber 1 and PP-PE bicomponent fiber 2 as examples, when the modified cellulose fiber and PP-PE bicomponent fiber are not bonded together, and the ratio of modified cellulose fiber to PP-PE bicomponent fiber is different, the tensile strength and absorption capacity of dressing 40 are as follows:

[0046]

[0047] The proportions in the table above represent the weight ratio of modified cellulose fiber to PP-PE bicomponent fiber. The percentages in the table indicate the weight percentage of the corresponding fiber in dressing 40.

[0048] As shown in the table above, when the weight ratio of modified cellulose fiber to PP-PE bicomponent fiber is between 7 and 27:3, dressing 40 exhibits both high tensile strength and strong absorbency. Controlling the weight ratio of gelling fiber 1 to chemical fiber 2 within this range helps balance the tensile strength and absorbency of dressing 40, making it more suitable for user needs.

[0049] In some specific embodiments, the weight ratio of gelling fiber 1 to chemical fiber 2 is 17:3.

[0050] Through experiments and practical applications, it has been found that when the weight ratio of modified cellulose fiber to PP-PE bicomponent fiber is 85%:15%, i.e. 17:3, the absorbency can be preserved to the maximum extent, while the tensile strength can also reach a level where dressing 40 is not easy to leave residue on the patient. The tensile strength and absorbency of dressing 40 achieve a good balance, which better meets the needs of users.

[0051] In some specific embodiments, the needle-punching density of the mixture composed of gelling fiber 1 and chemical fiber 2 is 150~300 times / m.

[0052] Before bonding the rubber-forming fiber 1 and the chemical fiber 2 together using hot-melt or ultrasonic welding technology, the rubber-forming fiber 1 and the chemical fiber 2 must first be blended through processes such as opening, carding, web laying, needle punching, and slitting. Since bonding the rubber-forming fiber 1 and the chemical fiber 2 will affect the moisture absorption capacity of the dressing 40, in this embodiment, the needle punching density of the dressing 40 is adjusted to be lower than that of conventional dressings 40, at 150~300 times / m, so that the strength of the dressing 40 is enhanced while its moisture absorption capacity is still guaranteed.

[0053] This embodiment also discloses a composite dressing structure, as referenced. Figure 1 It includes the aforementioned dressing 40; it also includes a protective layer 10 and a release layer 20, the protective layer 10, dressing 40 and release layer 20 are arranged in sequence, the protective layer 10 includes a polyurethane film and / or a hydrocolloid film and / or a nonwoven fabric, and the release layer 20 includes release paper or release film.

[0054] Applying dressing 40 to the composite dressing structure helps to enhance the overall strength of the composite dressing structure and its fluid-locking ability, preventing absorbed exudate from easily seeping back into the wound. The protective layer prevents external bacteria and contaminants from entering the wound, reducing the risk of wound infection.

[0055] In some specific embodiments, reference is made to Figure 1 The composite dressing structure also includes an adhesive layer 30, which is disposed between the dressing 40 and the release layer 20. The adhesive layer 30 includes one or more of polyurethane foam, hydrocolloid and silicone adhesive.

[0056] The adhesive layer 30 provides adhesion to the composite dressing structure, firmly attaching the dressing 40 to the patient's wound. One or more of polyurethane foam, hydrocolloid, and silicone adhesive are used as the adhesive layer 30, giving it skin-friendly and comfortable properties, reducing patient pain and minimizing secondary injury during removal.

[0057] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A dressing, characterized in that: It includes mutually mixed gelling fibers (1) and chemical fibers (2), at least partially said gelling fibers (1) and said chemical fibers (2) are bonded together; The gelling fiber (1) and the chemical fiber (2) are partially bonded together, and a recess (3) is formed on the surface of the dressing (40) corresponding to the bonded position. The dressing (40) has a plurality of recesses (3), and the plurality of recesses (3) are evenly distributed on the surface of the dressing (40).

2. The dressing according to claim 1, characterized in that: The plurality of said recesses (3) are interconnected to form a mesh structure (5) on the surface of the dressing (40).

3. The dressing according to claim 1, characterized in that: It also includes quilting thread (4) for sewing the gelling fiber (1) and the chemical fiber (2) together, the quilting thread (4) being close to and extending along the edge of the dressing (40).

4. The dressing according to claim 1, characterized in that: The needle-punching density of the mixture composed of the gelling fiber (1) and the chemical fiber (2) is 150~300 times / m.

5. A composite dressing structure, characterized in that: The dressing (40) according to any one of claims 1 to 4 is included; it also includes a protective layer (10) and a release layer (20), wherein the protective layer (10), the dressing (40) and the release layer (20) are arranged in sequence, the protective layer (10) includes a polyurethane film and / or a hydrocolloid film and / or a nonwoven fabric, and the release layer (20) includes release paper or a release film.

6. The composite dressing structure according to claim 5, characterized in that: It also includes an adhesive layer (30) disposed between the dressing (40) and the release layer (20), the adhesive layer (30) comprising one or more of polyurethane foam, hydrocolloid and silicone adhesive.

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