CN205286703U - Super medical dressing that absorbs water that contains chitosan fiber - Google Patents

Abstract

The utility model discloses a superabsorbent medical dressing containing chitosan fiber. The superabsorbent medical dressing comprises a four-layer structure, which is successively a polyethylene film layer, a chitosan fiber non-woven fabric layer, a superabsorbent resin layer and a repellent layer. Water non-woven layer. The medical dressing of the utility model is easy to use, has good antibacterial and moisture absorption effects, can promote wound healing, and is convenient for medical staff to observe the wound healing condition of patients.

Description

A kind of superabsorbent medical dressing containing chitosan fiber

technical field

The utility model relates to the technical field of medical dressings, in particular to a superabsorbent medical dressing containing chitosan fibers.

Background technique

Medical dressings are an important class of medical materials used to cover sores, wounds or other injuries. It can provide a physical barrier for the wound; control the fluid produced by the wound, absorb pus and blood from wet wounds, and provide moisture to dry wounds; Control bacteria and microorganisms etc. on the wound.

In recent years, advances in technology have improved understanding of the wound healing process and the wound care process. According to the various new needs of patients and medical staff for dressing functions, medical dressings have made new breakthroughs in the original cotton yarn model, and new dressings are constantly being developed and used. For example: hydrogel medical dressings are used for leg ulcers, bed sores and surgical wounds, which can provide moisture to the wound and prevent the wound from drying out, and the hydrogel is transparent, which is convenient for medical staff to observe the wound at any time through the hydrogel. It will not cause secondary trauma to the wound during replacement; in silver-containing medical dressings, silver ions play a major antibacterial role. Used on chronic wounds and burns, it can control the reproduction of bacteria on the wound and promote wound healing; polyurethane foam dressing has certain elasticity, can be applied to some parts of the human body that are difficult to cover, and has good compression performance, It has a good protective effect on the wound and the skin around the wound. For injured patients, covering the wound with a polyurethane foam dressing can make their life as normal as possible.

Chinese utility model patent CN202537768U discloses a superabsorbent dressing, which adopts a three-layer structure, including a first surface layer, a second surface layer and an intermediate layer between the first surface layer and the second surface layer, wherein the first surface layer and the second surface layer Both are non-woven fabric layers, and the middle layer is a super absorbent polymer (SuperAbsorbentPolymer, SAP) composite layer. However, the superabsorbent dressing tends to cause wound stickiness during use, which may cause secondary damage to the wound surface when it is disassembled or replaced. In addition, it lacks the ability to prevent bacterial growth, promote wound healing, and promote skin regeneration. In addition, the entire medical dressing needs to be replaced frequently, which increases the irritation to the wound and increases the pain of the patient.

Utility model content

The utility model provides a superabsorbent medical dressing containing chitosan fiber, which has the function of superabsorbing moisture and contains chitosan fiber, which can prevent bacterial growth, promote wound healing and promote skin regeneration while absorbing moisture.

The utility model is realized through the following technical solutions:

A super-absorbent medical dressing containing chitosan fibers, the super-absorbent medical dressing comprises a four-layer structure, followed by a polyethylene film layer, a chitosan fiber non-woven fabric layer, a super-absorbent resin layer and a water-repellent non-woven fabric layer .

As a preferred solution of the present invention, the above-mentioned polyethylene film layer is a perforated air-permeable film layer.

As a preferred solution of the present utility model, the above-mentioned superabsorbent resin layer exists in the form of a superabsorbent bag. Further preferably, the above-mentioned superabsorbent bag includes an outermost layer of non-woven fabric, an innermost layer of superabsorbent resin particles, and a fiber paper layer between the above-mentioned non-woven fabric layer and the above-mentioned superabsorbent resin particle layer. Still further preferably, the above-mentioned superabsorbent resin particle layer is formed by superabsorbent resin bonded by an adhesive.

As a preferred solution of the present utility model, the above-mentioned superabsorbent bag is detachable.

As a preferred solution of the present utility model, the above-mentioned water-repellent non-woven fabric layer comprises two pieces of water-repellent non-woven fabrics partially overlapped and overlapped. Further preferably, the width of the overlapped portion of the above two partially overlapped water-repellent non-woven fabrics is 1-2 cm, and they are bonded by glue.

As a preferred solution of the present utility model, the above-mentioned water-repellent non-woven fabric layer comprises two pieces of water-repellent non-woven fabrics separated from each other, with an opening between them.

As a preferred solution of the present invention, the outer surface of the above-mentioned polyethylene film layer is covered with a release paper, and the above-mentioned release paper is bonded to the edge of the above-mentioned polyethylene film layer by an adhesive.

The superabsorbent medical dressing of the utility model has a polyethylene film layer on the surface, which can prevent the wound from sticking, and can reduce the damage to the surface of the wound when it is disassembled or replaced; Afterwards, it is in the form of a transparent gel, which can prevent bacterial growth, promote wound healing, and promote skin regeneration; the superabsorbent resin layer as an interlayer can absorb a large amount of liquid, overcoming the problem of insufficient hygroscopic effect of existing medical dressings; water-repellent non-woven fabrics The layer plays the role of preventing leakage and covering and fixing the superabsorbent resin. In addition, the superabsorbent resin layer can be in the form of a superabsorbent bag, especially a detachable superabsorbent bag. With the adhesive sticker and opening design, the superabsorbent resin superabsorbent bag can be easily replaced without frequent replacement of the entire medical dressing , reduce the stimulation of the wound, and relieve the pain of the patient. At the same time, after the superabsorbent bag is disassembled, it is convenient to observe the wound healing situation, so that the medical staff can keep abreast of the patient's condition.

Description of drawings

Fig. 1 is a schematic diagram of the main structure of a superabsorbent medical dressing containing chitosan fibers in an embodiment of the present invention.

Fig. 2 is a schematic diagram of the main structure of a superabsorbent medical dressing containing chitosan fibers in another embodiment of the present invention.

Fig. 3 is a schematic diagram of the overall structure of the superabsorbent medical dressing containing chitosan fibers in an embodiment of the present invention.

Description of the drawings: 1 represents the polyethylene film layer, 2 represents the chitosan fiber non-woven fabric layer, 3 represents the superabsorbent resin layer, 4 represents the water-repellent non-woven fabric layer, 5 represents the main body of the dressing, 6 represents the adhesive, 7 Indicates release paper.

detailed description

The utility model will be described in further detail below through specific embodiments in conjunction with the accompanying drawings.

The superabsorbent medical dressing of the utility model comprises a four-layer structure, which is successively a polyethylene film layer, a chitosan fiber non-woven fabric layer, a super water-absorbent resin layer and a water-repellent non-woven fabric layer. They are stacked together in turn, in which the polyethylene film layer and the water-repellent non-woven fabric layer are used as the upper and lower surface layers respectively, the chitosan fiber non-woven fabric layer is located under the polyethylene film layer, and the super absorbent resin layer is located on the shell. The polysaccharide fiber non-woven fabric layer is under the water-repellent non-woven fabric layer as an interlayer.

The above-mentioned polyethylene film layer is preferably a perforated air-permeable film layer. It plays a breathable role, and the chitosan fiber's functions of preventing bacterial growth, promoting wound healing, and promoting skin regeneration are more easily exerted through the air holes, and water can be more easily absorbed by the superabsorbent resin layer. In the utility model, the polyethylene film layer can prevent the wound from sticking, and can reduce damage to the surface layer of the wound during disassembly or replacement. Chitosan fiber non-woven fabric is transparent gel after moisture absorption, which can prevent bacterial growth, promote wound healing, and promote skin regeneration; the super absorbent resin layer as an interlayer can absorb a large amount of liquid, which overcomes the hygroscopic effect of existing medical dressings Insufficient problem; the water-repellent non-woven fabric layer plays the role of preventing leakage and covering and fixing the superabsorbent resin.

The superabsorbent resin layer preferably exists in the form of a superabsorbent pack, and the superabsorbent pack is preferably detachable. In this way, the superabsorbent bag can be replaced conveniently, without frequent replacement of the entire medical dressing, which reduces irritation to the wound and relieves the pain of the patient. At the same time, after the superabsorbent bag is disassembled, it is convenient to observe the wound healing situation, so that the medical staff can keep abreast of the patient's condition.

In a preferred embodiment of the present utility model, the above-mentioned superabsorbent bag includes the outermost non-woven fabric layer, the innermost superabsorbent resin particle layer, and Between layers of fibrous paper. Such a structure can play a good role in fixing the superabsorbent resin. Even so, there may still be a problem of superabsorbent resin gathering locally. In order to further improve the fixing effect and uniform distribution effect of the superabsorbent resin, it is best to bond the superabsorbent resin together with an adhesive to form a superabsorbent resin particle layer.

In the utility model, the water-repellent non-woven fabric layer has multiple arrangement methods, and the utility model provides two typical arrangement methods. In the first mode, the above-mentioned water-repellent non-woven fabric layer includes two pieces of partially overlapped water-repellent non-woven fabrics. Further preferably, the width of the overlapping parts is 1-2 cm, and they are bonded by glue. In the second mode, the above-mentioned water-repellent non-woven fabric layer includes two pieces of water-repellent non-woven fabrics separated from each other with an opening between them.

Since the polyethylene film layer is close to the surface layer of the skin wound during use, in order to protect the polyethylene film layer from contamination, a protective layer can be arranged on the polyethylene film layer. That is to say, the outer surface of the polyethylene film layer is covered with a release paper, and the release paper can be bonded to the edge of the polyethylene film layer by an adhesive.

Example 1

Please refer to FIG. 1 , in this embodiment, the main structure of the dressing includes a polyethylene film layer 1 , a chitosan fiber non-woven fabric layer 2 , a superabsorbent resin layer 3 and a water-repellent non-woven fabric layer 4 . During production, the polyethylene film layer 1 and the chitosan fiber non-woven fabric layer 2 are first combined by a hot pressing roller, and then they are combined with two water-repellent non-woven fabric layers 4 by using a traction roller. One of the methods such as seaming or sewing is used to close the edges around and divide into pieces. Wherein, as shown in FIG. 1 , the above-mentioned water-repellent non-woven fabric layer 4 is partially overlapped and overlapped together, and the width of the overlapped part between them can be set to 1-2 cm, and they can be glued together.

In this embodiment, the above-mentioned superabsorbent resin layer 3 is specifically a SAP superabsorbent bag, which can be prepared by the following preparation method. Use the traction roller to cover a layer of lower fiber paper on the non-woven fabric, use the coating method to cover the SAP superabsorbent particle mixed adhesive (such as acrylate adhesive) on the fiber paper, and the other end pulls the fiber paper and non-woven fabric. It is bonded by hot pressing rollers, and the bonding strength reaches at least 14N to ensure its tightness. Of course, the SAP superabsorbent particles do not have to be attached to the fiber paper by coating, they can also be shaken off to the fiber paper by the polymer feeding device, and the amount of SAP can be adjusted through the vibration frequency or the pore size of the device.

Then, the SAP superabsorbent bag is placed between the chitosan fiber non-woven fabric layer 2 and the water-repellent non-woven fabric layer 4, and the two water-repellent non-woven fabric layers 4 are sealed by adhesive tape, which can be torn apart and reused.

Example 2

The difference between the superabsorbent medical dressing of this embodiment and the embodiment 1 is that the composite method of the polyethylene film layer 1 and the chitosan fiber non-woven layer 2 and the design of the water-repellent non-woven layer 4 are slightly different.

Please refer to FIG. 2 , in this embodiment, the main structure of the dressing includes a polyethylene film layer 1 , a chitosan fiber non-woven fabric layer 2 , a superabsorbent resin layer 3 and a water-repellent non-woven fabric layer 4 . During production, firstly, the polyethylene film layer 1 and the chitosan fiber non-woven fabric layer 2 are compounded by needle punching, and then combined with the water-repellent non-woven fabric layer 4 by using a guide rod, and then heat-sealed by coating, ultrasonically pressed or stitched. One of the methods such as sealing the edges around and cutting them into pieces. Wherein, as shown in Figure 1, the above-mentioned water-repellent non-woven fabric layer 4 comprises two water-repellent non-woven fabrics separated from each other, and there is an opening between them, from which the SAP superabsorbent bag can be placed, and it can be disassembled and replaced. . In the present embodiment, the making method of SAP superabsorbent bag is the same as embodiment 1.

As shown in FIG. 3 , the superabsorbent medical dressing prepared in the above-mentioned embodiment 1 and embodiment 2 is used as the dressing body 5 , and a release paper 7 can be pasted on the polyethylene film layer 1 through an adhesive 6 .

The chitosan fiber non-woven fabric layer in the utility model is closely bonded to the polyethylene film layer through hot pressing rollers or acupuncture, etc. During use, N-acetylglucosamine that accelerates wound healing is produced through molecular degradation to improve Wound healing speed; its antibacterial effect can also be maximized at this time. While it exerts antibacterial and wound healing effects, the excess liquid is introduced into the SAP particle layer, and the super water absorption capacity of SAP is used to complete the moisture absorption, antibacterial and accelerated healing process of the entire wound. In a word, the medical dressing of the utility model is easy to use, has good antibacterial and moisture absorption effects, can promote wound healing, and is convenient for medical staff to observe the wound healing of patients.

The above content is a further detailed description of the utility model in combination with specific implementation modes, and it cannot be determined that the specific implementation of the utility model is only limited to these descriptions. For a person of ordinary skill in the technical field to which the utility model belongs, without departing from the concept of the utility model, some simple deduction or substitutions can also be made, which should be regarded as belonging to the protection scope of the utility model.

Claims (10)

1. a superabsorbent medical dressing containing chitosan fiber, is characterized in that, described superabsorbent medical dressing comprises four-layer structure, is successively polyethylene film layer, chitosan fiber non-woven fabric layer, superabsorbent resin layer and a layer of water-repellent non-woven fabric. 2. The superabsorbent medical dressing according to claim 1, wherein the polyethylene film layer is a perforated air-permeable film layer. 3. The superabsorbent medical dressing according to claim 1, wherein the superabsorbent resin layer exists in the form of a superabsorbent bag. 4. The superabsorbent medical dressing according to claim 3, characterized in that, the superabsorbent bag comprises the outermost non-woven fabric layer, the innermost superabsorbent resin particle layer and the non-woven fabric layer and the fiber paper layer between the superabsorbent resin particle layer. 5 . The superabsorbent medical dressing according to claim 4 , characterized in that, the superabsorbent resin particle layer is formed by bonding the superabsorbent resin through an adhesive. 6. The superabsorbent medical dressing according to claim 3, wherein the superabsorbent pack is detachable. 7. The superabsorbent medical dressing according to claim 1, characterized in that, the water-repellent non-woven fabric layer comprises two partially overlapped water-repellent non-woven fabrics. 8. superabsorbent medical dressing according to claim 7, is characterized in that, the width of the overlapping portion of the water-repellent non-woven fabric of described two parts overlapped overlapping is 1-2cm, and they are pasted by glue combine. 9. The superabsorbent medical dressing according to claim 1, wherein the water-repellent non-woven fabric layer comprises two pieces of water-repellent non-woven fabrics separated from each other with an opening between them. 10. superabsorbent medical dressing according to claim 1, is characterized in that, the outside of described polyethylene film layer covers release paper, and described release paper is bonded to described polyethylene film layer by adhesive. edge.