CN105395315A - Special dressing used after burn wound mesh grafting - Google Patents

Abstract

The special dressing for burn wounds after mesh skin grafting disclosed by the invention belongs to the technical field of medical dressings, and includes an inner layer, a middle layer and an outer layer in order from the side in contact with the wound site; the inner layer dressing is rich in zinc ions, And there are several drainage holes through the thickness direction of the inner dressing; the inner dressing is a blend of chitosan fiber and activated carbon fiber, which is used for anti-infection, hemostasis, promoting healing and absorbing a small amount of wound secretion; the middle dressing The polyurethane foam sponge layer is used to absorb the exudate discharged from the drainage holes of the inner dressing; the outer dressing is a cotton gauze layer for fixing and bandaging. The special dressing of the present invention, the inner, middle and outer layers cooperate with each other, the design is ingenious, has the advantages of hemostasis, anti-infection, moisturizing, promoting healing, good drainage, etc., and can effectively aim at the wound healing after mesh skin grafting of burn wounds.

Description

Special dressing for burn wound after mesh skin grafting

technical field

The invention belongs to the technical field of medical dressings, in particular to a special dressing for burn wounds after mesh skin grafting.

Background technique

Mesh skin grafting is the most common type of skin grafting in patients with extensive burns. After the skin was harvested, the skin grafts were trimmed into a net shape with a mesh skin machine and transplanted on the burn wound. After the reticular skin and the wound base establish blood supply, the epithelium begins to crawl, the mesh gradually closes, and the wound is completely healed. The advantage of mesh skin grafting is that subcutaneous hemorrhage is not easy to occur, it is easy to survive, a large proportion of wounds are closed, and the postoperative function is good; the disadvantage is that the anti-infection ability is poor, and once the bacterial content of the exposed wound exceeds the maximum limit, the bacteria will nibble away. New epithelium, even reticular sheets. Therefore, the key to the treatment of burn wounds after mesh skin grafting is to prevent infection and accelerate healing.

In response to the above problems, the traditional method is to use gauze combined with various antibacterial drugs to change the dressing. As the most common medical dressing, gauze has the advantages of protecting the wound surface, absorbing properties, wide sources, simple production, and low price. However, the disadvantages are also prominent: it is impossible to keep the wound moist, hindering the epithelialization of tissue cells, and delaying wound healing; the dressing fibers are easy to fall off, causing foreign body reactions and affecting healing; wound granulation tissue is easy to grow into the mesh of the dressing, which can cause pain when changing dressings ; It is easy to damage the new epithelium when changing the dressing; the workload of changing the dressing is heavy. Based on the above shortcomings, scholars at home and abroad have applied many new dressings to wounds after mesh skin grafting, trying to solve the shortcomings of traditional dressings. Chitosan dressing is a new type of biological dressing that is most widely used in clinical practice. It has various biological functions such as hemostasis, anti-infection, moisturizing, promoting healing, and relieving pain. However, after a lot of clinical practice, it was found that this new type of dressing has a poor ability to drain exudate. If there is a lot of exudate on the wound after skin grafting, it will usually accumulate between the dressing and the wound, making the dressing unable to adhere to the wound and cannot be effective. biological effects, and even aggravate local infection. Activated carbon fiber dressing has certain functions of hemostasis, anti-infection, moisturizing, and promoting healing, and has good adsorption capacity, but it can only absorb a small amount of exudate. Polyurethane foam sponge is a new type of synthetic dressing, which has a strong ability to absorb exudate, and actively absorbs and retains in situ, but it does not have biological effects of anti-infection and promoting healing. In addition, whether it is chitosan dressing, activated carbon fiber or polyurethane foam sponge, the toughness and tensile strength of the three are not enough, which is not conducive to pressure bandaging.

Contents of the invention

In order to overcome the defects in the above-mentioned prior art, the object of the present invention is to provide a special dressing for burn wounds after mesh skin grafting. The dressing has reasonable structural design and has the advantages of hemostasis, anti-infection, moisturizing, promoting healing, and good drainage.

The present invention is achieved through the following technical solutions:

The invention discloses a special dressing for burn wounds after mesh skin grafting, which includes an inner layer dressing, a middle layer dressing and an outer layer dressing sequentially from the side in contact with the skin grafting site; Drainage holes, and the inner dressing is rich in zinc ions; the inner dressing is a composite layer made of chitosan fiber and activated carbon fiber, which is used for anti-infection, hemostasis, promoting healing and absorbing a small amount of wound secretion; the middle layer The dressing is a polyurethane foam sponge layer, which is used to absorb the exudate discharged from the drainage holes of the inner dressing; the outer dressing is a cotton gauze layer, which is used for fixing and bandaging; the inner dressing is rich in zinc ions, and the inner dressing The thickness direction of the dressing is provided with several through drainage holes.

The thickness of the inner dressing is 2-3 mm.

The thickness of the middle dressing is 2-3mm.

The thickness of the outer dressing is 4-6 mm.

The diameter of the drainage hole is 3mm.

The plurality of drainage holes are arranged at equal intervals.

The hole spacing between several drainage holes is 7mm.

The areas of inner dressing, middle dressing and outer dressing were equal.

Compared with the prior art, the present invention has the following beneficial technical effects:

The special dressing for burn wounds after reticular skin grafting disclosed by the invention comprises three layers of inner, middle and outer layers. The inner dressing is made of chitosan fiber and activated carbon fiber blended, which is rich in zinc ion components. The layer dressing is also provided with a number of through drainage holes in the thickness direction, the secretions of the burn wound can be fully drained through the drainage holes, so that the inner layer dressing can be well attached to the burn wound, and can better play hemostasis, anti-infection, moisturizing, and promote blood circulation. Biological effects of healing, analgesia. Since the burn wound below the drainage hole is not in direct contact with the inner dressing, the zinc ions rich in the inner dressing can be slowly released and drained to the wound below the drainage hole through the drainage hole, playing the dual role of anti-infection and promoting healing. The middle dressing is a polyurethane foam sponge layer, which has the functions of active absorption and in-situ retention, and can fully absorb the exudate discharged from the drainage holes of the inner dressing, so that there will be no accumulation of exudate at the drainage holes. The outer dressing is a cotton gauze layer, which has good toughness and strength, can ensure the integrity of the dressing, and is also convenient for pressing during bandaging. The special dressing of the present invention, the inner, middle and outer layers cooperate with each other, the design is ingenious, has the advantages of hemostasis, anti-infection, moisturizing, promoting healing, good drainage, etc., and can effectively aim at the wound healing after mesh skin grafting of burn wounds.

Further, in the present invention, the diameter of the drainage holes is set to 3 mm, and the spacing between the drainage holes is set to 7 mm. The larger the hole diameter, the smaller the hole spacing, and the better the drainage of wound secretions, but the more wounds under the drainage holes, the more internal The biological effect of layer dressing is small. After many experiments and repeated performance tests, the pore diameter of the present invention is designed to be 3mm, and the hole spacing is designed to be 7mm, which is the most ideal data, which can not only ensure the sufficient drainage of secretions, but also maximize the role of the inner layer of dressing, and at the same time The dressing pore size of 3 mm is also within the release range of zinc ions.

Description of drawings

Fig. 1 is the side view of special dressing structure of the present invention;

Fig. 2 is a top view of the special dressing structure of the present invention.

Among them, 1 is the inner dressing; 2 is the middle dressing; 3 is the outer dressing; 4 is the drainage hole.

detailed description

The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.

Referring to Fig. 1, the special dressing after burn wound reticular skin grafting of the present invention, from the contact side with skin grafting position, comprises successively inner layer dressing 1, middle layer dressing 2 and outer layer dressing 3; The thickness direction of inner layer dressing 1 There are several through-drainage holes 4, and the inner layer dressing 1 is rich in zinc ions; the inner layer dressing 1 is made of chitosan fiber and activated carbon fiber blended, which is used for anti-infection, hemostasis, promoting healing and absorbing a small amount of wound surface secretion; the middle dressing 2 is a polyurethane foam sponge layer, which is used to absorb the exudate discharged from the drainage hole of the inner dressing; the outer dressing 3 is a cotton gauze layer, which is used for fixing and bandaging.

The thickness of the inner dressing 1 is 2-3 mm, the thickness of the middle dressing 2 is 2-3 mm, and the thickness of the outer dressing 3 is 4-6 mm. The area of the three-layer dressing is comparable.

Referring to FIG. 2 , preferably, the diameter of the drainage holes 4 is 3 mm, and the spacing between the drainage holes 4 is 7 mm. The larger the hole diameter and the smaller the hole spacing, the better the drainage of wound secretions, but the more wounds under the drainage holes, the smaller the biological effect of the inner dressing. After many experiments, it was found that the pore diameter of 3mm and the pore spacing of 7mm are the most ideal data, which can not only ensure the sufficient drainage of secretions, but also maximize the effect of the inner layer of the dressing. within range.

The burn wound mesh skin grafting postoperative special dressing of the present invention, when in use:

After the skin grafting is finished, the special dressing of the present invention is used to cover the wound completely, so that the inner dressing 1 of the special dressing is in close contact with the wound, and the outer dressing 3 is wrapped firmly with a bandage.

The secretion of the burn wound can be fully drained through the drainage hole 4 of the inner layer dressing 1, so that the inner layer dressing can be well attached to the wound surface, and better exert the biological effects of hemostasis, anti-infection, moisturizing, promoting healing, and analgesia.

Since the inner layer dressing 1 is provided with a plurality of drainage holes 4, the wound surface under the drainage holes 4 does not directly contact with the inner layer dressing, so it is difficult to exert various biological effects of the inner layer dressing. At this time, the zinc ions rich in the inner layer dressing can be slowly released to the wound surface under the drainage hole 4, thereby exerting the dual functions of anti-infection and promoting healing. (The larger the hole diameter, the smaller the hole spacing, the better the drainage of wound secretions, but the more wounds under the drainage holes, the smaller the biological effect of the inner dressing. After many experiments, it was found that the hole diameter is 3mm, and the hole spacing is 7mm. The most ideal data can not only ensure the sufficient drainage of secretions, but also maximize the effect of the inner dressing, and at the same time, the dressing pore size of 3mm is also within the release range of zinc ions)

The middle layer dressing 2 is a polyurethane foam sponge layer, which can fully absorb the exudate discharged from the mesh, and actively absorb and retain it in situ, so that there will be no accumulation of exudate at the 4 drainage holes.

The outer dressing 3 is made of cotton gauze, which has good toughness and strength, can ensure the integrity of the dressing, and is also convenient for pressurization during bandaging.

Claims (8)

1. a special dressing after burn wound reticular skin grafting, is characterized in that, from the contact side with skin grafting position, comprises successively inner layer dressing (1), middle layer dressing (2) and outer layer dressing (3); The thickness direction of the inner layer dressing (1) is provided with several through drainage holes (4), and the inner layer dressing (1) is rich in zinc ions; The inner layer dressing (1) is a composite material layer formed by blending chitosan fibers and activated carbon fibers, and is used for resisting sensation and absorbing wound secretions; The middle layer dressing (2) is a polyurethane foam sponge layer, which is used to absorb the exudate discharged from the drainage hole (4) of the inner layer dressing (1); The outer layer of dressing (3) is a cotton gauze layer for fixing and bandaging. 2. The special dressing for burn wounds after mesh skin grafting according to claim 1, characterized in that the thickness of the inner layer dressing (1) is 2-3 mm. 3. The special dressing for burn wounds after mesh skin grafting according to claim 1, characterized in that the thickness of the middle layer dressing (2) is 2-3 mm. 4. The special dressing for burn wounds after mesh skin grafting according to claim 1, characterized in that the thickness of the outer dressing (3) is 4-6 mm. 5. The special dressing for burn wounds after mesh skin grafting according to claim 1, characterized in that the aperture of the drainage hole (4) is 3 mm. 6. The special dressing for burn wounds after mesh skin grafting according to claim 1, characterized in that, the plurality of drainage holes (4) are equidistantly arranged. 7. The special dressing for burn wounds after mesh skin grafting according to claim 6, characterized in that the hole spacing between some drainage holes (4) is 7mm. 8. the burn wound mesh skin grafting postoperative special dressing according to claim 1, is characterized in that the areas of the inner layer dressing (1), the middle layer dressing (2) and the outer layer dressing (3) are quite.