CN208641036U - Wound dressing with multi-layer structure - Google Patents

Wound dressing with multi-layer structure Download PDF

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Publication number
CN208641036U
CN208641036U CN201721348327.3U CN201721348327U CN208641036U CN 208641036 U CN208641036 U CN 208641036U CN 201721348327 U CN201721348327 U CN 201721348327U CN 208641036 U CN208641036 U CN 208641036U
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layer
wound
wound dressing
dressing
fiber
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莫小慧
王晓东
王锐
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Foshan United Medical Technologies Ltd
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Foshan United Medical Technologies Ltd
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Abstract

The utility model relates to a kind of wound dressing with multi-layer structure, the wound dressing includes at least three layers, and liquid conductive layer, reserve liquid layer and buffer layer, wound exudate lead wet speed in the transverse direction of the reserve liquid layer and leads wet speed in other layers of transverse direction greater than it.The wound dressing can be effectively prevented wound fluid horizontal proliferation and cause healthy skin impaired to wound circumference healthy skin, suitable for exedens wound, the purposes of the nursing of chronic wounds and hemostasis by compression.

Description

Wound dressing with multi-layer structure
Technical field
The utility model relates to medical care products fields, and in particular to a kind of wound dressing with multi-layer structure.
Background technique
In ulcer wound nursing process, generally approves at present and be widely used that wettability Morden wound dressing. Wettability wound dressing is to be made the surface of a wound under wettability wound dressing based on wet healing theory, kept it moderately wet Environment and suitable temperature, to promote the healing of wound.Therefore, wettability wound dressing is needed with high-hygroscopicity and moisturizing Property.Currently, this kind of wettability wound dressing using it is more be the fiber wound dressing with colloidal sol performance, such as calcium alginate Wound dressing, Chitosan in Wound Dressing, modified cellulose wound dressing etc..These dressing have highly hygroscopic and humectant, inhale Gel can be formed after receiving wound fluid, so as to provide a relatively wet environment for wound healing.However, these Dressing largely only has single layer structure, and after absorbing wound exudate, wound fluid is stored in full wafer dressing, is contacted with wound Dressing surface be wet, although moisturizing can be played the role of, wetting dressing can also make periwound skin by To long period of soaking, so that therefore healthy skin can also be damaged.Therefore the nursing of this kind of wound both needs to be cured for wound Close and wet environment be provided, and need to keep dressing surface relatively dry or less wet, with protect wound and surrounding skin not by It impregnates.
European patent EP 0690344, United States Patent (USP) US6458460, British patent GB2489541 Chinese patent CN102727925B, Chinese patent application CN106894111A and Chinese patent application CN1235533A disclose some moisture absorptions Dressing, but it is not able to maintain dressing surface relatively dry.
Chinese patent CN105640705A discloses a kind of composite functional medical dressing, and dressing is by functional layer and protective layer Two layers of composition, functional layer are combined using alginic acid fibre net with viscose web, and protective layer is fine by viscose rayon and terylene Dimension is made up of cross lapping, and two layers compound using pinprick reinforcement technology again, although obtained dressing moisture pick-up properties is good, this is applied It is mainly alginic acid fibre and viscose rayon, shape after alginic acid fibre absorbing wound exudate that material, which contacts (i.e. functional layer) with wound, At gel, diffusate is still stored in the functional layer contacted with wound, still without solving diffusate dipping wound and health The problem of skin.
Chinese patent CN205286703U discloses a kind of superabsorbent water medical dressing of chitosan-containing fiber, which includes Four-layer structure: polyethylene film layer, chitin fiber nonwoven layer, high hydroscopic resin layer and water repellent nonwovens layer.The dressing has Superabsorbent function, while bacteria breed can be prevented, promote wound healing.But chitin fiber non-woven fabrics used in dressing Layer, forms gel after moisture absorption, reduces the effect that diffusate is spread to high hydroscopic resin layer, still without solving diffusate leaching The shortcomings that stain wound and healthy skin.In addition, the high hydroscopic resin layer of the dressing uses high hydroscopic resin particle, particle is inhaled It is expanded after receiving diffusate, particle is easy to leak out, inconvenient to use.
Chinese patent CN102648880A describes a kind of three layers of dressing for bone surgery, the dressing by bottom, in Interbed and outer layer are combined.Wherein, bottom is the cotton gauze with one-faced tapes, and middle layer is bactericidal haemostatic gauze, outer layer Wet gauze is led to be ventilative.The dressing have effects that it is good it is ventilative lead wet, but since the dressing is mainly made of gauze, moisture absorption is seeped Sepage cannot be lockked after liquid well, sepage is easy to diffuse to surrounding healthy skin from wound;In addition, the dressing is contacted with wound Be gauze, be easy to be adhered wound, be easy to cause secondary damage to wound when removing dressing.
Chinese patent CN202537768U discloses a kind of superabsorbent water dressing, which uses three-decker, including first Surface layer, the second surface layer and the middle layer between the first surface layer and the second surface layer, wherein the first surface layer and the second surface layer are Nonwoven layer, middle layer are high hydroscopic resin (SAP) composite layer.The dressing has bibulous characteristic, can effectively lock suction The wound fluid of receipts.However, the dressing exists in use is easy to produce wound adhesion phenomenon, it is easy when removing dressing to wound Mouth causes secondary damage.
Chinese patent CN105597136A describes a kind of wound dressing of wet-guide quick-drying, which includes three-decker: First absorbed layer, the second absorbed layer and middle layer.First absorbed layer is contacted with the surface of a wound, is made of viscose rayon and polyester fiber Non-woven fabrics, the second absorbed layer is made of moisture-absorbing fibre, and middle layer is nonwoven cotton gauze or medical sponge dressing layer.The dressing With good absorbent properties and high liquid storage capacity, the sepage of absorption can be conducted, while the one side of dressing contact wound Lower suitable humidity is kept, influence of the wound dipping to wound healing is reduced.However, the dressing middle layer be cotton gauze or Sponge dressing, water lock ability is poor, and when wound fluid is more, diffusate is easy leakage and returns to the first absorbed layer, even From dressing side leakage to healthy skin.
Chinese patent CN103655046B discloses a kind of wound dressing with three-decker, including wound-contacting layer, Intermediate moisture absorption layer and outer layer, wound-contacting layer are the non-woven cloth comprising hydrophilic fibers and hydrophobic fiber, and intermediate moisture absorption layer is packet Non-woven cloth containing another group of hydrophilic fibers and hydrophobic fiber, outer layer are the non-woven cloth comprising hydrophobic fiber.The dressing has Wound exudate can be sent to rapidly middle layer, prevent periwound skin by wound exudate by vertical wet guiding function Dipping.However, the structure that the dressing actually plays vertical wet guiding function only has wound-contacting layer and absorbent central layer, outer layer It only shields, therefore is suitable only for the less wound of wound fluid and uses, the dressing hygroscopicity in the patent Example Data show that the wound dressing hygroscopicity of the patent disclosure is only at 50 grams/100 square centimeters or less.When diffusate is more, by In the non-woven cloth that outer layer is hydrophobic fiber, diffusate cannot be absorbed, the excessive diffusate of intermediate moisture absorption layer cannot be by outer layer It absorbs and is come out from dressing side leakage, to pollute healthy skin.
Therefore, it is necessary to which developing one kind has high-hygroscopicity, but lateral spreading lower Wound care products.This is practical Novel advantage is that there is wound dressing multilayered structure to also set up below reserve liquid layer other than liquid conductive layer and reserve liquid layer Buffer layer, the setting of buffer layer can efficiently solve above-mentioned Chinese patent CN103655046B, and to be only applicable to diffusate less The shortcomings that wound, buffer layer can further store wound fluid excessive in reserve liquid layer, solve excessive diffusate from The case where dressing side leakage.The utility model by wound dressing structure design on improvement, to obtain high-hygroscopicity And lateral spreading lower wound dressing, the dressing hygroscopicity is at 50 grams/100 square centimeters or more.
The above-mentioned statement to background technique it is merely for convenience to technical solutions of the utility model (technological means that uses, The technical issues of solution and the technical effect of generation etc.) deep understanding, and be not construed as recognizing or with any Form implies that the information constitutes the prior art known to those skilled in the art.
Utility model content
The purpose of this utility model is to provide a kind of wound dressings with multi-layer structure, with high-hygroscopicity and guarantor It is moist, wound fluid horizontal proliferation can be effectively prevented and cause healthy skin impaired to wound circumference healthy skin.
Based on above-mentioned purpose, the utility model provides a kind of wound dressing with multi-layer structure, the wound dressing Including at least three layers, liquid conductive layer, reserve liquid layer and buffer layer, it is big that wound exudate in the transverse direction of the reserve liquid layer leads wet speed Wet speed is led in other layers of transverse direction in the wound exudate.
In a specific embodiment, the liquid conductive layer is non-woven structures or porous foam structure, institute It states reserve liquid layer and buffer layer is non-woven structures.
In an optional embodiment, antiblocking layers are additionally provided on the upper layer of liquid conductive layer, it is described to prevent adhesion Layer has porous membrane structure.
In a specific embodiment, the porous membrane structure is Antiadhesive film.
In an optional embodiment, outer protective layer or elastic force are additionally provided in the lower layer of the buffer layer Layer.
In an optional embodiment, between the buffer layer and the outer protective layer or in the buffering Between layer and the elastic layer, it is additionally provided with pressure conduction layer.
In an optional embodiment, between the pressure conduction layer and outer protective layer or in the pressure Pressing plate layer is additionally provided between conducting shell and the elastic layer.
In a specific embodiment, the elastic layer is the elastic layer of self-adhesion, is answered on the elastic layer of the self-adhesion Close the release paper protective layer for having middle opening.
In a specific embodiment, the elastic layer of the self-adhesion is selected from Non-woven tape or PE adhesive tape.
In a specific embodiment, the complex method between each layer of the multilayered structure of the wound dressing is selected from Needle thorn is compound, adhesive is compound, hot melt is compound, or combinations thereof.
Wound fluid can be absorbed in the liquid conductive layer of wound dressing described in the utility model, and is transmitted to liquid storage Layer, wound fluid are stored in reserve liquid layer, and diffusate leads wet speed in the transverse direction of reserve liquid layer and is greater than it in the transverse direction of other layers Wet speed is led, and diffusate is greater than it in the distribution area of other layers, to solve in the cross direction profiles area of reserve liquid layer Wound fluid horizontal proliferation to wound circumference healthy skin and therefore the disadvantage that causes healthy skin impaired is suitable for The nursing of exedens wound, chronic wounds.Particularly, wound dressing described in the utility model is particularly suitable for wound fluid More wound.When wound fluid is more, the buffer layer below reserve liquid layer can further store in reserve liquid layer excessive Wound fluid prevents excessive diffusate from dressing side leakage.
Wound dressing provided by the utility model includes can be to the structure sheaf that wound is effectively oppressed, such as pressure conduction layer, pressure Plate layer, elastic layer etc., are transmitted by pressure, wound are oppressed, to have the function that hemostasis.Therefore, it is suitable for bleeding wounds Hemostasis by compression.
Detailed description of the invention
Fig. 1 is the wound dressing structure chart in embodiment 1 with three-decker.
Fig. 2 is the schematic diagram that diffusate forms an inverted " t " type shape in the wound dressing that embodiment 1 provides.
Fig. 3 is the wound dressing structure chart in embodiment 2 with four-layer structure.
Fig. 4 is wound dressing one " ten " type shape of interior formation that diffusate provides in example 2.
Fig. 5 is the hemostatic adhesive bandage structure chart in embodiment 4 with five-layer structure.
Fig. 6 is the hemostatic adhesive bandage structure chart in embodiment 5 with six layer structure.
Fig. 7 is the hemostatic adhesive bandage structure chart in embodiment 6 with seven-layer structure.
In above-mentioned figure:
1-liquid conductive layer;
2-reserve liquid layers;
3-outer protective layers;
4-buffer layers;
5-pressure conduction layers;
6-elastic layers;
7-pressing plate layers;
8-antiblocking layers;
9-diffusates are distributed in dressings.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
It is to be appreciated that appended attached drawing is not proportionally drawn, and merely to illustrating the basic principle of the utility model Various features the suitably simplified technique of painting.The specific design feature of the utility model disclosed herein includes for example specific ruler Very little, direction, position and shape will be partly determined by the specific application and use environment.
In appended multiple attached drawings, same or equivalent component (element) is with the index of identical appended drawing reference.
The utility model design of the utility model includes multiple specific embodiments, and different embodiments respectively has technology Upper or application is upper stresses, different embodiments can be combined collocation to meet different application scenarios, solve different answer Use demand.Therefore, the description of following pairs of specific embodiments should not be construed as the technical solution for being intended to protect to the utility model Restriction.
The utility model provides a kind of wound dressing with multi-layer structure, and the wound dressing includes at least three layers, Liquid conductive layer, reserve liquid layer and buffer layer, wound exudate are led wet speed in the transverse direction of the reserve liquid layer and are greater than at other layers Laterally lead wet speed.Wherein, the liquid conductive layer absorbing wound exudate and it is transmitted to reserve liquid layer adjacent thereto.At one In specific embodiment, the liquid of reserve liquid layer laterally leads wet speed and leads wet speed greater than the transverse direction of liquid conductive layer, buffer layer. In a specific embodiment, the wound dressing is greater than 50 grams/100 square centimeters to the hygroscopicity of wound exudate.
Term " laterally leading wet speed " refers to the lateral diffusion length/wound fluid or blood of wound fluid or blood From dropping liquid is started to the time for stopping horizontal proliferation.
Term " hygroscopicity " refers to dressing to the moisture pick-up properties of wound fluid or blood.Hygroscopic unit can be Gram gram or gram/100 square centimeters, generally, the hygroscopicity unit of fiber is gram gram to refer to that every gram of fiber can absorb wound The quality of diffusate;And after being prepared into dressing, it is generally indicated with the hygroscopicity of unit area, refers to every 100 square centimeters of dressing The quality of energy absorbing wound exudate.
In a specific embodiment, the liquid of reserve liquid layer laterally leads wet speed in 1 to 100 cm per minute.Cause This, the diffusate of wound is greater than it in the distribution area of other each layers in reserve liquid layer cross direction profiles area, and diffusate is in wound In dressing, the distribution on cross section forms the shape of an inverted " t " type or " ten " type.Since reserve liquid layer absorbs most of wound Juice thereby may be ensured that the surface relatively dry contacted with wound.
In a specific embodiment, the effect of the liquid conductive layer is absorbing wound exudate, and will wound Mouth diffusate is transmitted to reserve liquid layer adjacent thereto.
In a specific embodiment, the liquid conductive layer is a kind of non-woven cloth.The non-woven cloth by Moisture-absorbing fibre and non-hygroscopic fiber blend composition, wherein the content of moisture-absorbing fibre accounts for the 80% of liquid conductive layer weight Below.In specific embodiments, moisture-absorbing fibre is selected from one or more of fiber: viscose fiber, water suction acrylic are fine Dimension, water suction polypropylene fiber, Lyocell fibers, calcium alginate fibre, water suction chitin fiber, carboxymethyl cellulose fiber, carboxylic second Base cellulose fibre, acylation chitosan fiber, carboxymethyl chitosan fiber.It is fine that non-hygroscopic fiber is selected from one or more of Dimension: polypropylene fiber, polyester fiber, nylon fiber, polyethylene fibre, hydrophobic chitin fiber, polypropylene fibre/polyethylene bicomponent fibre, Buddhist nun Dragon/polyethylene bicomponent fibre, terylene/nylon bicomponent fibre.
In a specific embodiment, the liquid conductive layer of non-woven cloth can be obtained by needling process, moisture absorption After property fiber and non-hygroscopic fiber are mixed in a certain ratio, it is prepared through techniques such as shredding, combing, lapping, acupuncture nonwovens. The liquid conductive layer of non-woven cloth can also be prepared by mixing low-melting fiber such as bicomponent fibre using hot melting way It arrives.The grammes per square metre of the liquid conductive layer of non-woven cloth is between 10-1000 grams/m, and preferably 30-600 grams/m.
In a specific embodiment, the liquid conductive layer is also possible to a kind of foamed material.Foamed material So that liquid conductive layer has porosity and elasticity, it is easy absorbing wound exudate.The foamed material of liquid conductive layer can be Polyurethane foam, polyvinyl alcohol foam, polyethylene, EVA (ethylene-vinyl acetate copolymer) foam.The utility model institute The thickness of foamed material liquid conductive layer is stated between 0.1-15 millimeters, preferably 3-10 millimeters.
In a specific embodiment, the effect of the reserve liquid layer is to store and lock wound fluid, is avoided Wound fluid is back to liquid conductive layer, to diffuse to the healthy skin of wound circumference.The transverse direction of reserve liquid layer leads wet speed Transverse direction greater than other each layers leads wet speed, and the cross direction profiles area of diffusate is greater than it in the distribution area of other each layers.Cause This, diffusate forms the shape of an inverted " t " type or " ten " type in wound dressing on cross section.The transverse direction of reserve liquid layer is led Wet speed is in 1 to 100 cm per minute, preferably 2 to 100 cm per minutes.Since the transverse direction of reserve liquid layer leads wet speed greater than other The transverse direction of layer leads wet speed, and after diffusate is absorbed by wound dressing, diffusate is greater than it in the cross direction profiles area of reserve liquid layer In the distribution area of other each layers, to form an inverted " t " type shape.Exudation when exudation liquid measure is larger, in reserve liquid layer Liquid can also be conducted to other layers adjacent thereto, such as buffer layer, to form the shape of " ten " type.
In a specific embodiment, the reserve liquid layer includes hygroscopic material or superabsorbent, the suction The hygroscopicity of wet stock or superabsorbent is at 10 gram grams or more.
In a specific embodiment, the hygroscopic material or superabsorbent of the reserve liquid layer are selected from following one kind Or a variety of moisture-absorbing fibres: viscose fiber, Lyocell fibers, calcium alginate fibre, water suction chitin fiber, carboxymethyl cellulose Fiber, carboxyethylcellulose cellulose fiber, acylation chitosan fiber, carboxymethyl chitosan fiber, superabsorbent water crosslinking acrylic fiber, wood Pulp fibres.Reserve liquid layer can also be made of above-mentioned moisture-absorbing fibre and one or more of non-hygroscopic fiber: polypropylene fiber, Polyester fiber, nylon fiber, polyethylene fibre, hydrophobic chitin fiber, polypropylene fibre/polyethylene bicomponent fibre, nylon/polyethylene bi-component Fiber, terylene/nylon bicomponent fibre.
In a specific embodiment, the reserve liquid layer can be obtained by needling process, and moisture-absorbing fibre is opened Song Hou is prepared through techniques such as combing, lapping, acupuncture nonwovens.Reserve liquid layer can also pass through such as double groups of mixing low-melting fiber Part fiber, is prepared using hot melting way.
It can be combined with each other by way of needle thorn between liquid conductive layer and reserve liquid layer, adhesive means can also be passed through It is combined with each other, can be more combined with each other by hot melting way.This depends primarily on the material of liquid conductive layer and reserve liquid layer Constituent.If liquid conductive layer is non-woven cloth, can by way of needle thorn, adhesive means or hot melting way it is compound. It, can be compound by hot melting way if liquid conductive layer or reserve liquid layer contain low-melting fiber.If liquid conductive layer is Foamed material, then can be compound by adhesive means.
Buffer layer can further store wound fluid excessive in reserve liquid layer, prevent excessive diffusate from dressing side Face leakage, the wound more suitable for wound fluid.
In a specific embodiment, the buffer layer is a kind of non-woven cloth.The non-woven cloth is by following One or more moisture-absorbing fibre compositions: viscose fiber, water suction acrylic fiber, water suction polypropylene fiber, Lyocell fibers, alginic acid Calcium fiber, water suction chitin fiber, carboxymethyl cellulose fiber, carboxyethylcellulose cellulose fiber, acylation chitosan fiber, carboxymethyl Chitin fiber.Buffer layer can also be made of above-mentioned moisture-absorbing fibre and one or more of non-hygroscopic fiber blend, Wherein, the content of moisture-absorbing fibre accounts for 80% or less buffering layer weight: polypropylene fiber, polyester fiber, nylon fiber, polyethylene are fine Dimension, hydrophobic chitin fiber, polypropylene fibre/polyethylene bicomponent fibre, nylon/polyethylene bicomponent fibre, terylene/nylon bi-component are fine Dimension.
In a specific embodiment, the buffer layer of non-woven cloth can be obtained by needling process, and hygroscopicity is fine After dimension or moisture-absorbing fibre and non-hygroscopic fiber are mixed in a certain ratio, through works such as shredding, combing, lapping, acupuncture nonwovens Skill is prepared.The buffer layer of non-woven cloth can also be by mixing low-melting fiber such as bicomponent fibre, using hot melt side Formula is prepared.
In a specific embodiment, the grammes per square metre of the buffer layer of non-woven cloth between 10 to 1000 grams/m, It is preferred that between 30 to 600 grams/m.
In addition to this, according to different needs, the wound dressing can increase different structure sheafs.As increased waterproof Outer protective layer protects the structure of reserve liquid layer and/or buffer layer, prevents the wound absorbed in reserve liquid layer and/or buffer layer from oozing out Liquid oozes out and pollution clothes.
In a specific embodiment, the outer protective layer is selected from spun-bonded non-woven fabrics or spun laced fabric.The spunbond Non-woven fabrics or spun laced fabric can be obtained by one or more of fiber by hot melting way or spun lacing mode: polypropylene fiber is washed Synthetic fibre fiber, nylon fiber, polyethylene fibre, hydrophobic chitin fiber, Lyocell fibers, polypropylene fibre/polyethylene bi-component, nylon/second Synthetic fibre bicomponent fibre, terylene/nylon bicomponent fibre.
In an optional embodiment, wound dressing with multi-layer structure provided by the utility model be can be used as Hemostatic wound dressing uses.In this embodiment, to further increase wound dressing to the oppressive force of wound, the wound The buffer layer lower layer of dressing is additionally provided with elastic layer to increase the oppressive force to wound.The elastic layer can be the elastic force of self-adhesion Layer, is made of the elastic rubber belt with good retractility, the non-woven fabric glue that elastic rubber belt can be cross directional stretch or four sides stretches Band or PE adhesive tape.
In an optional embodiment, the release paper protection of middle opening is compounded on the elastic layer of the self-adhesion Layer.
In a specific embodiment, between buffer layer and outer protective layer or buffer layer and elastic layer it Between, it is additionally provided with pressure conduction layer.Pressure conduction layer has the function of uniform conductive pressure.
In a specific embodiment, pressure conduction layer choosing is from polyethylene, eva foam, polyurethane foam, poly- Vinyl alcohol foam.
In a specific embodiment, between pressure conduction layer and outer protective layer or in pressure conduction layer and Between elastic layer, it is additionally provided with a laminate layer.Pressing plate layer provides effective oppressive force for wound.
In a specific embodiment, pressing plate layer choosing autohemagglutination acrylic panel, polyethylene panel.
It in a preferred embodiment, is the adhesion for reducing dressing liquid conductive layer and wound, the utility model institute The liquid conductive layer surface being related to can compound one layer of antiblocking layers again, the antiblocking layers are by with the anti-sticking of porous membrane structure Even film is constituted.
In a specific embodiment, needle thorn side can also be passed through between liquid conductive layer, reserve liquid layer and other layers Formula, adhesive means or hot melting way are combined with each other.This depends on the constituent and function and usage of every layer material.
In a specific embodiment, to make dressing that there is anti-microbial property, the liquid conductive layer and/or liquid storage Layer contains antibacterial agent, and the antibacterial agent is silver, silver compound, silver complex, poly hexamethylene biguanide, sodium ethylene diamine tetracetate Salt, honey.The silver antibacterial agent can be silver nitrate, silver chlorate, silver carbonate, silver sulfate, phosphoric acid hydrogen zirconium sodium silver, silver thiosulfate Deng.The silver content of the liquid conductive layer or reserve liquid layer can be between 0.001-10%.
In a specific embodiment, to make dressing that there is anthemorrhagic performance, the liquid conductive layer and/or described Reserve liquid layer contains hemostat, the hemostat be calcium alginate, chitin, chitosan, acylation chitosan, carboxymethyl chitosan, Modified cellulose.
Wound dressing energy absorbing wound exudate in the embodiment above, hygroscopicity of the dressing to wound fluid Greater than 50 grams/100 square centimeters.The wound dressing that the utility model obtains, the wound more suitable for wound fluid.
Suction of the hemostatic adhesive bandage with hemostasis by compression function based on the wound dressing acquisition in the embodiment above to blood It is moist to be greater than 50 grams/100 square centimeters.
Embodiment
Embodiment 1: the wound dressing with three-decker.
Fig. 1 is the wound dressing structure chart with three-decker.Referring to Fig. 1, in the present embodiment with three-decker Wound dressing has liquid conductive layer 1, reserve liquid layer 2 and outer protective layer 3, wherein liquid conductive layer: third containing 75 weight % Synthetic fibre fiber, the viscose fiber of 25 weight %.Wherein, the fineness of polypropylene fiber is 2.0dtex, and length is 38 millimeters;Viscose fiber Fineness be 1.67dtex, length be 38 millimeters.Two kinds of fibers mix after weighing in proportion, pierce through shredding, combing, lapping, needle The liquid conductive layer of needle punched non-woven fabrics is made afterwards, grammes per square metre is 310 grams/m.
Reserve liquid layer: the superabsorbent water crosslinking acrylic fiber containing 50 weight %, 50 weight % Lyocell fibers.Superabsorbent water is handed over The fineness of bipropenyl acid fiber is 2.7dtex, and length is 10 millimeters;The fineness of Lyocell fibers is 1.7dtex, and length is 51 millis Rice.Two kinds of fibers mix after weighing in proportion, and the reserve liquid layer of needle punched non-woven fabrics is made after shredding, combing, lapping, needle thorn, Grammes per square metre is 210 grams/m.The hygroscopicity of reserve liquid layer is 24 gram grams.
Outer protective layer: blue polypropylene spunbond non-woven fabrics, grammes per square metre are 30 grams/m.
Liquid conductive layer, reserve liquid layer and outer protective layer are combined with each other with needle thorn mode, wound dressing grammes per square metre is 550 Gram/m.The wound dressing being prepared cuts into the nonwoven fabric sheet of 10 × 10cm and goes out after paper plastic bag is packed through Co 60 Bacterium obtains the wound dressing with three-decker.Testing obtained wound dressing hygroscopicity is 52 grams/100 square centimeters.
Each layer laterally leads the test of wet speed: taking solution A, (group of solution A becomes every liter of solution A and contains 8.298 grams of chlorinations Sodium and 0.368 gram of calcium chloride dihydrate, with the diffusate of its analog wound) 10ml, the wound of above-mentioned preparation is added dropwise in 30 seconds In mouth dressing, the timing since being added dropwise solution A, until horizontal proliferation no longer occurs in layers in solution A.It records from dropwise addition solution A starts to time used in horizontal proliferation and solution A is stopped in the length of each layer, calculates solution A in each layer according to following formula In transverse direction lead wet speed and cross direction profiles area:
It is horizontal to stopping from dropping liquid is started laterally to lead wet speed (cm per minute)=solution A lateral diffusion length/solution A To the time of diffusion;
Cross direction profiles area (square centimeter)=π × [(lateral diffusion length/2 of solution A) ^2].
Stop horizontal proliferation time judgment criteria be 30 seconds in solution horizontal proliferation increment less than 1 millimeter.
After tested, the liquid conductive layer of the wound dressing of above-mentioned preparation and reserve liquid layer to the transverse direction of solution A lead wet speed and Test result is as follows shown in table 1 for cross direction profiles area after moisture absorption, it can be seen that solution A is in the wound dressing of three-decker Distribution be in inverted " t " type shape (referring to fig. 2).
Table 1
Laterally lead wet speed Diffusate cross direction profiles area
Liquid conductive layer 0.7 cm per minute 0.13 square centimeter
Reserve liquid layer 10.5 cm per minutes 29 square centimeters
Embodiment 2: the wound dressing with four-layer structure.
Fig. 3 is the wound dressing structure chart with four-layer structure.Referring to Fig. 3, in the present embodiment, with four-layer structure Wound dressing includes liquid conductive layer 1, reserve liquid layer 2, buffer layer 4 and outer protective layer 3, wherein liquid conductive layer: containing 70 weights Measure the polypropylene fiber of %, the Lyocell fibers of 30 weight %.The fineness of polypropylene fiber is 2.0dtex, and length is 38 millimeters;Lai Sai The fineness of your fiber is 1.7dtex, and length is 51 millimeters.Two kinds of fibers mix after weighing in proportion, through shredding, combing, lapping, The liquid conductive layer of needle punched non-woven fabrics is made after needle thorn, grammes per square metre is 270 grams/m.
Reserve liquid layer: the superabsorbent water crosslinking acrylic fiber containing 50% weight, 50 weight % polypropylene fibers.Superabsorbent water crosslinking The fineness of acrylic fiber is 2.7dtex, and length is 10 millimeters;The fineness of polypropylene fiber is 2.0dtex, and length is 38 millimeters. Two kinds of fibers mix after weighing in proportion, and the reserve liquid layer of needle punched non-woven fabrics, grammes per square metre are made after shredding, combing, lapping, needle thorn It is 200 grams/m.Reserve liquid layer hygroscopicity is 27 gram grams.
Buffer layer: the polypropylene fiber containing 70 weight %, the Lyocell fibers of 30 weight %.The fineness of polypropylene fiber is 2.0dtex, length are 38 millimeters;The fineness of Lyocell fibers is 1.7dtex, and length is 51 millimeters.Two kinds of fibers claim in proportion It is mixed after weight, the buffer layer of needle punched non-woven fabrics is made after shredding, combing, lapping, needle thorn, grammes per square metre is 200 grams/m.
Outer protective layer: yellowish pink polypropylene spunbond non-woven fabrics, grammes per square metre are 30 grams/m.
Liquid conductive layer, reserve liquid layer, buffer layer and outer protective layer are combined with each other with needle thorn mode, wound dressing gram Weight is 670 grams/m.The wound dressing being prepared cuts into the nonwoven fabric sheet of 10 × 10cm, after paper plastic bag is packed, warp Co 60 sterilizing, that is, obtain the wound dressing with four-layer structure.Testing obtained wound dressing hygroscopicity is 58 grams/100 squares Centimetre.
After tested, liquid conductive layer, reserve liquid layer and buffer layer lead the transverse direction point after wet speed and moisture absorption to the transverse direction of solution A Test result is as follows for cloth area shown in table 2, it can be seen that distribution of the solution A in the wound dressing of four-layer structure is in " ten " Type shape (referring to fig. 4).
Table 2
Laterally lead wet speed Diffusate cross direction profiles area
Liquid conductive layer 0.9 cm per minute 0.12 square centimeter
Reserve liquid layer 15.8 cm per minutes 34 square centimeters
Buffer layer 0.6 cm per minute 0.05 square centimeter
Embodiment 3: the wound dressing with four-layer structure, wherein reserve liquid layer contains antibacterial agent.
In the present embodiment, the wound dressing with four-layer structure includes liquid conductive layer, reserve liquid layer, buffer layer and outer layer Protective layer.Wherein, liquid conductive layer: the polypropylene fiber containing 75 weight %, the calcium alginate fibre of 25 weight %.Polypropylene fiber Fineness be 2.0dtex, length be 38 millimeters;The fineness of calcium alginate fibre is 2.5dtex, and length is 51 millimeters.Two kinds of fibres Dimension mixes after weighing in proportion, and the liquid conductive layer of needle punched non-woven fabrics is made after shredding, combing, lapping, needle thorn, and grammes per square metre is 250 grams/m.
Reserve liquid layer: the superabsorbent water crosslinking acrylic fiber containing 60 weight %, 40 weight % silver-containing alginic acid calcium fibers contain Silver-colored calcium alginate fibre silver content is 1.5%.The fineness of superabsorbent water crosslinking acrylic fiber is 2.7dtex, and length is 10 millimeters; The fineness of silver-containing alginic acid calcium fiber is 2.5dtex, and length is 51 millimeters.Two kinds of fibers mix after weighing in proportion, through shredding, Needle punched non-woven fabrics are made after combing, lapping, needle thorn, non-woven fabrics grammes per square metre is 180 grams/m.Reserve liquid layer hygroscopicity be 20 grams/ Gram.
Buffer layer: the polypropylene fiber containing 75 weight %, the Lyocell fibers of 25 weight %.The fineness of polypropylene fiber is 2.0dtex, length are 38 millimeters;The fineness of Lyocell fibers is 1.7dtex, and length is 51 millimeters.Two kinds of fibers claim in proportion It is mixed after weight, the buffer layer of needle punched non-woven fabrics is made after shredding, combing, lapping, needle thorn, grammes per square metre is 230 grams/m.
Outer protective layer: white Lyocell fibers spun laced fabric, grammes per square metre are 40 grams/m.
Liquid conductive layer, reserve liquid layer, buffer layer and outer protective layer are combined with each other with needle thorn mode, wound dressing gram Weight is 700 grams/m.The wound dressing being prepared cuts into the nonwoven fabric sheet of 10 × 10cm, after packaging of aluminium foil bag, warp Co 60 sterilizing, that is, obtain the wound dressing with four-layer structure.Testing obtained wound dressing hygroscopicity is 62 grams/100 squares Centimetre.
After tested, liquid conductive layer, reserve liquid layer and buffer layer lead the transverse direction point after wet speed and moisture absorption to the transverse direction of solution A Test result is as follows for cloth area shown in table 3, it can be seen that distribution of the solution A in the wound dressing of four-layer structure is in " ten " Type shape.
Table 3
Laterally lead wet speed Diffusate cross direction profiles area
Liquid conductive layer 0.84 cm per minute 0.15 square centimeter
Reserve liquid layer 14.1 cm per minutes 37.4 square centimeters
Buffer layer 0.8 cm per minute 0.14 square centimeter
Embodiment 4: the hemostatic adhesive bandage that the wound dressing with five-layer structure is constituted.
Referring to Fig. 5, in the present embodiment, the wound dressing with five-layer structure includes liquid conductive layer 1, reserve liquid layer 2, delays Rush layer 4, pressure conduction layer 5 and elastic layer 6.Wherein, liquid conductive layer: the hydrophobic chitin fiber containing 80 weight %, 20 weights Measure the water suction chitin fiber of %.The fineness of hydrophobic chitin fiber is 2.2dtex, and length is 51 millimeters;The chitosan that absorbs water is fine The fineness of dimension is 2.2dtex, and length is 51 millimeters.Two kinds of fibers mix after weighing in proportion, pierce through shredding, combing, lapping, needle The liquid conductive layer of needle punched non-woven fabrics is made afterwards, grammes per square metre is 230 grams/m.
Reserve liquid layer: the superabsorbent water crosslinking acrylic fiber containing 50 weight %, 38 weight % Lyocell fibers, 12 weight % Polypropylene fibre/polyethylene bicomponent fibre.The fineness of superabsorbent water crosslinking acrylic fiber is 2.7dtex, and length is 10 millimeters;Lyocell is fine The fineness of dimension is 1.7dtex, and length is 51 millimeters;Polypropylene fibre/polyethylene bicomponent fibre fineness is 2.0dtex, and length is 38 millis Rice.Three kinds of fibers mix after weighing in proportion, are made non-woven fabrics after shredding, combing, lapping, needle thorn, non-woven fabrics through hot melt at Reason, obtains reserve liquid layer, and grammes per square metre is 250 grams/m.Reserve liquid layer hygroscopicity is 30 gram grams.
Buffer layer: the viscose fiber containing 100 weight %.Viscose fiber fineness is 1.67dtex, and length is 38 millimeters.It will After viscose fiber weighing, it being made the buffer layers of needle punched non-woven fabrics after shredding, combing, lapping, needle thorn, grammes per square metre is 270 grams/it is flat Square rice.
Pressure conduction layer: polyethylene, with a thickness of 5 millimeters.
Elastic layer: white cross directional stretch elastic force Non-woven tape, having a size of 4 × 13cm.
Liquid conductive layer, reserve liquid layer and buffer layer are combined with each other with needle thorn mode, obtain the non-woven fabrics of three-decker, Grammes per square metre is 750 grams/m.The non-woven fabrics of three-decker passes through together with adhered by double sided plaster between pressure conduction layer, then Cut into the oval composite sheet of 3 × 1.5cm (long diameter × short diameter).Composite sheet passes through acrylic pressure sensitive adhesives, It is pasted together with elastic force Non-woven tape (elastic layer), hemostatic adhesive bandage is prepared.After hemostatic adhesive bandage is packed with paper plastic bag, through epoxy Ethane sterilizing.The hygroscopicity for testing obtained hemostatic adhesive bandage is 68 grams/100 square centimeters.
After tested, after liquid conductive layer, reserve liquid layer and the buffer layer of hemostatic adhesive bandage lead wet speed and moisture absorption to the transverse direction of solution A Cross direction profiles area test result is as follows shown in table 4, it can be seen that distribution of the solution A in the hemostatic adhesive bandage of five-layer structure be in " ten " type shape.
Table 4
Laterally lead wet speed Diffusate cross direction profiles area
Liquid conductive layer 0.79 cm per minute 0.14 square centimeter
Reserve liquid layer 14 cm per minutes 37.4 square centimeters
Buffer layer 0.48 cm per minute 0.05 square centimeter
Embodiment 5: the hemostatic adhesive bandage that the wound dressing with six layer structure is constituted.
Referring to Fig. 6, in the present embodiment, the hemostatic adhesive bandage with six layer structure includes liquid conductive layer 1, reserve liquid layer 2, buffering Layer 4, pressure conduction layer 5, pressing plate layer 7 and elastic layer 6.Wherein liquid conductive layer: the polypropylene fiber containing 80 weight %, 20 weights Measure the calcium alginate fibre of %.The fineness of polypropylene fiber is 2.0dtex, and length is 38 millimeters;The fineness of calcium alginate fibre is 2.5dtex, length are 51 millimeters.Two kinds of fibers mix after weighing in proportion, and needle thorn is made after shredding, combing, lapping, needle thorn The liquid conductive layer of non-woven fabrics, grammes per square metre are 140 grams/m.
Reserve liquid layer: the superabsorbent water crosslinking acrylic fiber containing 50 weight %, 38 weight % viscose fibers, 12 weight % third Synthetic fibre/polyethylene bicomponent fibre.The fineness 2.7dtex of superabsorbent water crosslinking acrylic fiber, length are 10 millimeters;Viscose fiber fineness For 1.67dtex, length is 38 millimeters;Polypropylene fibre/polyethylene bicomponent fibre fineness is 2.0dtex, and length is 38 millimeters.Three kinds of fibres Dimension mixes after weighing in proportion, non-woven fabrics is made after shredding, combing, lapping, needle thorn, non-woven fabrics is handled through hot melt, is stored up Liquid layer, grammes per square metre are 200 grams/m.Reserve liquid layer hygroscopicity is 28 gram grams.
Buffer layer: the polypropylene fiber containing 60 weight %, the Lyocell fibers of 40 weight %.The fineness of polypropylene fiber is 2.0dtex, length are 38 millimeters;The fineness of Lyocell fibers be 1.7dtex, 51 millimeters of length.Two kinds of fibers are weighed in proportion After mix, the buffer layers of needle punched non-woven fabrics is made after shredding, combing, lapping, needle thorn, grammes per square metre is 150 grams/m.
Pressure conduction layer: polyethylene, with a thickness of 4 millimeters.
Pressing plate layer: polypropylene plastics flitch, 1 millimeter of thickness, size 3.6x3cm.
Elastic layer: colour of skin four sides tensile-elasticity Non-woven tape, having a size of 4x13cm.
Liquid conductive layer, reserve liquid layer and buffer layer are combined with each other with needle thorn mode, obtain the non-woven fabrics of three-decker, Grammes per square metre is 490 grams/m.Pass through adhered by double sided plaster between the non-woven fabrics and polyethylene (pressure conduction layer) of three-decker Together, the oval composite sheet of 3 × 1.5cm is then cut into.Between composite sheet and polypropylene plastics flitch (pressing plate layer) Together by adhered by double sided plaster.Polypropylene plastics flitch passes through acrylic pressure sensitive adhesives again, with elastic force Non-woven tape (elastic force Layer) it is pasted together, hemostatic adhesive bandage is prepared.After hemostatic adhesive bandage is packed with paper plastic bag, ethane via epoxyethane sterilizing.What test obtained stops The hygroscopicity of blood patch is 56 grams/100 square centimeters.
After tested, liquid conductive layer, reserve liquid layer and the buffer layer of the hemostatic adhesive bandage of the present embodiment lead wet speed to the transverse direction of solution A Test result is as follows shown in table 5 for cross direction profiles area after degree and moisture absorption, it can be seen that solution A is in stopping with six layer structure Distribution in blood patch is in " ten " type shape.
Table 5
Laterally lead wet speed Diffusate cross direction profiles area
Liquid conductive layer 0.78 cm per minute 0.14 square centimeter
Reserve liquid layer 15.3 cm per minutes 47.3 square centimeters
Buffer layer 0.58 cm per minute 0.08 square centimeter
Embodiment 6: the hemostatic adhesive bandage that the wound dressing with seven-layer structure is constituted.
Referring to Fig. 7, liquid conducting shell 1, reserve liquid layer 2 and buffer layer 4 are prepared respectively according to embodiment 5, it will with needle thorn mode Liquid conductive layer, reserve liquid layer and buffer layer are combined with each other, and obtain the non-woven fabrics of three-decker, and grammes per square metre is 490 grams/m. One layer of Antiadhesive film, i.e. antiblocking layers 8 are covered by way of hot pressing in liquid conductive layer surface.Non-woven fabrics is steeped with polyethylene again Foam (pressure conduction layer 5) together, then cuts into the oval composite sheet of 3 × 1.5cm by adhered by double sided plaster.Composite sheet Material is between polypropylene plastics flitch by together with adhered by double sided plaster.Polypropylene plastics flitch (pressing plate layer 7) passes through propylene acid fracturing again Sensitive adhesive is pasted together with elastic force Non-woven tape (elastic layer 6), the hemostatic adhesive bandage to prevent adhesion is prepared.Hemostatic adhesive bandage is used After paper plastic bag packaging, ethane via epoxyethane sterilizing.
Embodiment 7: the hemostatic adhesive bandage that the wound dressing with five-layer structure is constituted.
In the present embodiment, the hemostatic adhesive bandage with five-layer structure includes liquid conductive layer, reserve liquid layer, buffer layer, pressure biography Conducting shell and elastic layer.Wherein, liquid conductive layer: polyurethane foam, with a thickness of 3 millimeters.
Reserve liquid layer: the carboxymethyl cellulose fiber containing 20 weight %, 80 weight % viscose fibers.Carboxymethyl cellulose is fine The fineness of dimension is 2.2dtex, and length is 51 millimeters;The fineness of viscose fiber is 1.67dtex, and length is 38 millimeters.Two kinds of fibers It is mixed after weighing in proportion, non-woven fabrics is made after shredding, combing, lapping, needle thorn, non-woven fabrics is handled through hot melt, obtains liquid storage Layer, grammes per square metre are 220 grams/m.Reserve liquid layer hygroscopicity is 20 gram grams.
Buffer layer: contain 100% water suction polypropylene fiber.The fineness of water suction polypropylene fiber is 2.0dtex, and length is 38 millis Rice.It absorbs water after polypropylene fiber weighing, the buffer layer of needle punched non-woven fabrics is made after shredding, combing, lapping, needle thorn, grammes per square metre is 150 grams/m.
Pressure conduction layer: polyethylene, with a thickness of 4 millimeters.
Elastic layer: clear PE tape stretch, having a size of 4 × 13cm.
First reserve liquid layer and buffer layer are combined with each other with needle thorn mode, obtain the non-woven fabrics of double-layer structure, grammes per square metre 370 Gram/m.Liquid conductive layer is between reserve liquid layer by leading to together with adhesive bonding between buffer layer and pressure conduction layer It crosses adhered by double sided plaster together, obtains the composite material of 2 structures.Then the oval composite sheet of 3 × 1.5cm is cut into.It is multiple It closes sheet material and hemostatic adhesive bandage is prepared together with elastic force PE tape-stripping by acrylic pressure sensitive adhesives.Hemostatic adhesive bandage paper After bag packaging, ethane via epoxyethane sterilizing.The hygroscopicity for testing obtained hemostatic adhesive bandage is 59 grams/100 square centimeters.
After tested, liquid conductive layer, reserve liquid layer and buffer layer lead the transverse direction point after wet speed and moisture absorption to the transverse direction of solution A Test result is as follows for cloth area shown in table 6, it can be seen that distribution of the solution A in the hemostatic adhesive bandage of five-layer structure is in " ten " type of falling Shape.
Table 6
Laterally lead wet speed Diffusate cross direction profiles area
Liquid conductive layer 0.77 cm per minute 0.16 square centimeter
Reserve liquid layer 12.8 cm per minutes 43.9 square centimeters
Buffer layer 0.53 cm per minute 0.08 square centimeter
Embodiment 8: the wound dressing with four-layer structure, wherein liquid conductive layer contains hemostat.
In the present embodiment, the wound dressing with four-layer structure includes liquid conductive layer, reserve liquid layer, buffer layer and outer layer Protective layer, wherein liquid conductive layer: the chitin fiber containing 35 weight %, the calcium alginate fibre and 35% of 30 weight % Hydrophobic chitin fiber.The fineness of chitin fiber is 2.0dtex, and length is 51 millimeters;The fineness of calcium alginate fibre is 2.5dtex, length are 51 millimeters;The fineness of hydrophobic chitin fiber is 2.2dtex, and length is 51 millimeters.Three kinds of fibers press than It being mixed after example weighing, is made the liquid conductive layers of needle punched non-woven fabrics after shredding, combing, lapping, needle thorn, grammes per square metre is 160 grams/ Square metre.
Reserve liquid layer: the hydroxyethyl cellulose containing 50% weight, the Lyocell fibers of 50 weight %.Hydroxy ethyl fiber The fineness of cellulose fiber is 2.2dtex, and length is 51 millimeters;The fineness of Lyocell fibers be 1.7dtex, 51 millimeters of length.Two kinds Fiber mixes after weighing in proportion, and the reserve liquid layer of needle punched non-woven fabrics is made after shredding, combing, lapping, needle thorn, and grammes per square metre is 230 grams/m.Reserve liquid layer hygroscopicity is 24 gram grams.
Buffer layer: the polyester fiber containing 75 weight %, the viscose fiber of 25 weight %.Polyester fiber fineness is 1.4dtex, length are 38 millimeters;The fineness of viscose fiber is 1.67dtex, and length is 38 millimeters.Two kinds of fibers are weighed in proportion After mix, the buffer layers of needle punched non-woven fabrics is made after shredding, combing, lapping, needle thorn, grammes per square metre is 150 grams/m.
Outer protective layer: blue polypropylene spunbond non-woven fabrics, grammes per square metre are 40 grams/m.
Liquid conductive layer, reserve liquid layer, buffer layer and outer protective layer are combined with each other with needle thorn mode, wound dressing gram Weight is 580 grams/m.The wound dressing being prepared cuts into the nonwoven fabric sheet of 10 × 10cm, after paper plastic bag is packed, warp Co 60 sterilizing, that is, obtain the wound dressing with four-layer structure.Test obtained wound dressing to the hygroscopicity of blood be 57 grams/ 100 square centimeters.
After tested, liquid conductive layer, reserve liquid layer and buffer layer lead the transverse direction point after wet speed and moisture absorption to the transverse direction of solution A Test result is as follows for cloth area shown in table 7, it can be seen that distribution of the solution A in the wound dressing of four-layer structure is in " ten " Type shape.
Table 7
Laterally lead wet speed Diffusate cross direction profiles area
Liquid conductive layer 0.88 cm per minute 0.11 square centimeter
Reserve liquid layer 16.2 cm per minutes 37 square centimeters
Buffer layer 0.62 cm per minute 0.08 square centimeter
The description that foregoing exemplary embodiment is presented is only to illustrate the technical solution of the utility model, is not intended to As without missing, also it is not intended to the utility model to be limited to described precise forms.Obviously, the common skill of this field Art personnel make many changes according to the above instruction and variation is all possible.Selection illustrative embodiments are simultaneously described and are In order to explain the certain principles and practical application of the utility model, so that others skilled in the art are convenient for reason Solve, realize and utilize the various illustrative embodiments and its various selection forms and modification of the utility model.This is practical Novel protection scope is intended to be limited by the appended claims and its equivalents.

Claims (10)

1. a kind of wound dressing with multi-layer structure, which is characterized in that the wound dressing includes at least three layers, liquid conductive Layer, reserve liquid layer and buffer layer, wound exudate lead wet speed greater than the wound exudate at it in the transverse direction of the reserve liquid layer The transverse direction of its layer leads wet speed.
2. wound dressing with multi-layer structure according to claim 1, which is characterized in that the liquid conductive layer right and wrong Woven cloths structure or porous foam structure, the reserve liquid layer and buffer layer are non-woven structures.
3. wound dressing with multi-layer structure according to claim 1, which is characterized in that on the upper layer of liquid conductive layer Antiblocking layers are additionally provided with, the antiblocking layers have porous membrane structure.
4. wound dressing with multi-layer structure according to claim 3, which is characterized in that the porous membrane structure is anti- Adhesion membrane.
5. wound dressing with multi-layer structure according to claim 1, which is characterized in that in the lower layer of the buffer layer It is additionally provided with outer protective layer or elastic layer.
6. wound dressing with multi-layer structure according to claim 5, which is characterized in that in the buffer layer and described Between outer protective layer or between the buffer layer and the elastic layer, it is additionally provided with pressure conduction layer.
7. wound dressing with multi-layer structure according to claim 6, which is characterized in that in the pressure conduction layer and Pressing plate layer is additionally provided between outer protective layer or between the pressure conduction layer and the elastic layer.
8. wound dressing with multi-layer structure according to claim 5, which is characterized in that the elastic layer is self-adhesion Elastic layer is compounded with the release paper protective layer of middle opening on the elastic layer of the self-adhesion.
9. wound dressing with multi-layer structure according to claim 8, which is characterized in that the elastic force layer choosing of the self-adhesion From Non-woven tape or PE adhesive tape.
10. wound dressing with multi-layer structure according to claim 1 to 9, which is characterized in that the wound Complex method between each layer of the multilayered structure of mouthful dressing is selected from needle and pierces that compound, adhesive is compound, hot melt is compound or its group It closes.
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