WO2015096230A1 - 一种新型泡沫复合伤口敷料 - Google Patents

一种新型泡沫复合伤口敷料 Download PDF

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Publication number
WO2015096230A1
WO2015096230A1 PCT/CN2014/070626 CN2014070626W WO2015096230A1 WO 2015096230 A1 WO2015096230 A1 WO 2015096230A1 CN 2014070626 W CN2014070626 W CN 2014070626W WO 2015096230 A1 WO2015096230 A1 WO 2015096230A1
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WIPO (PCT)
Prior art keywords
layer
water
polyurethane film
wound dressing
composite wound
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PCT/CN2014/070626
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English (en)
French (fr)
Inventor
吴康平
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浙江隆泰医疗科技股份有限公司
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Publication of WO2015096230A1 publication Critical patent/WO2015096230A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/42—Use of materials characterised by their function or physical properties
    • A61L15/58—Adhesives
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/02—Adhesive bandages or dressings
    • A61F13/0203—Adhesive bandages or dressings with fluid retention members
    • A61F13/0206—Adhesive bandages or dressings with fluid retention members with absorbent fibrous layers, e.g. woven or non-woven absorbent pads or island dressings
    • A61F13/0209—Adhesive bandages or dressings with fluid retention members with absorbent fibrous layers, e.g. woven or non-woven absorbent pads or island dressings comprising superabsorbent material
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/01—Non-adhesive bandages or dressings
    • A61F13/01021—Non-adhesive bandages or dressings characterised by the structure of the dressing
    • A61F13/01029—Non-adhesive bandages or dressings characterised by the structure of the dressing made of multiple layers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/02—Adhesive bandages or dressings
    • A61F13/0203—Adhesive bandages or dressings with fluid retention members
    • A61F13/0213—Adhesive bandages or dressings with fluid retention members the fluid retention member being a layer of hydrocolloid, gel forming material
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/02—Adhesive bandages or dressings
    • A61F13/0203—Adhesive bandages or dressings with fluid retention members
    • A61F13/022—Adhesive bandages or dressings with fluid retention members having more than one layer with different fluid retention characteristics
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/02—Adhesive bandages or dressings
    • A61F13/0259—Adhesive bandages or dressings characterised by the release liner covering the skin adhering layer
    • A61F13/0263—Adhesive bandages or dressings characterised by the release liner covering the skin adhering layer especially adapted for island dressings
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
    • A61L15/26—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/42—Use of materials characterised by their function or physical properties
    • A61L15/425—Porous materials, e.g. foams or sponges

Definitions

  • the present invention relates to a medical dressing, and in particular to a novel foam composite wound dressing.
  • the present invention provides a novel foam composite wound dressing, which can ensure proper temperature and humidity at the wound, fast wound healing, improve treatment efficiency, and reduce the pain of the wounded.
  • a novel foam composite wound dressing comprising a water absorbing layer and a water lock layer covering the water absorbing layer.
  • the invention quickly absorbs the exudate on the skin of the wound through the water absorption layer, and then the exudate in the water absorption layer is inhaled through the hydrophilic group through the water blocking layer, and the material of the water lock layer is rapidly swollen after being inhaled. , forming a certain strength of the hydrogel body, has a good ability to lock water, even if there is a certain pressure on it, water is not easy to return to seep. In the case of only the water absorbing layer, the moisture is not locked, and the exudate is easily returned to the wound. In the case of only the water-locked layer, the rate at which the exudate is absorbed is not fast enough, causing the exudate to overflow and the water-blocking layer to be insufficiently absorbent, which is detrimental to wound moisture absorption and peripheral cleaning.
  • a transition layer is disposed between the water absorbing layer and the water blocking layer.
  • the transition layer can absorb the exudate of the water absorption layer for short storage, and then slowly remove the lock by the water lock layer. In order to ensure proper humidity at the wound.
  • the water-blocking layer is covered with a waterproof layer.
  • a waterproof layer is provided on the layer away from the skin to prevent external moisture or other fine dust and germs from penetrating into the dressing and causing damage to the wound.
  • a polyurethane film layer is disposed under the water absorbing layer, and the polyurethane film layer is provided with a plurality of water permeable holes. Close to the skin, there is a polyurethane film layer to prevent the exudate from seeping from the side of the dressing.
  • the polyurethane film is a non-toxic, harmless and elastic film. It is antibacterial, breathable, and in direct contact with the skin. It is soft and harmless. Improve comfort, seepage through The water hole enters the water absorbing layer.
  • a coating layer is disposed under the polyurethane film layer, and the coating layer is a silicone gel coating or a medical pressure sensitive adhesive layer, and the silicone gel coating or the medical pressure sensitive adhesive layer is opened and The small holes corresponding to the water permeable holes on the polyurethane film layer.
  • Silicone gel coating or medical pressure sensitive adhesive layer is used to fix the dressing.
  • Silicone gel or medical pressure sensitive adhesive is non-toxic and tasteless. It can fix the dressing well, but it will not pull the skin when the dressing is removed. hurt.
  • the water absorbing layer is a foam water absorbing layer.
  • the foam is porous, has good water absorption, and also has a certain heat preservation property to ensure proper temperature and humidity at the wound.
  • the water-blocking layer is a layer of strongly absorbing fibers.
  • the strong absorbent fiber layer is non-toxic and breathable, and there are a large number of hydrophilic groups in the strong water-absorbent fiber, such as -0H, -S03Na, -COONa, etc., thereby producing a strong affinity for water molecules; sponges, foams, etc. After water absorption, under a certain pressure, the water will quickly ooze back and ooze out, and the water retention is poor.
  • the strong water absorbing fiber quickly swells after water absorption, forming a hydrogel with a certain strength, even if there is a certain pressure on it, the water is also Not easy to flow out.
  • the transition layer is a non-woven fabric or a bamboo fiber cloth or cotton cloth or burlap.
  • the non-woven fabric is non-toxic, non-irritating, and has good air permeability;
  • the bamboo fiber cloth has strong antibacterial and antibacterial ability, and has good moisture permeability.
  • the waterproof layer is a polyurethane film, a polyurethane film layer is disposed under the water absorption layer, a plurality of water-permeable holes are disposed on the polyurethane film layer, and a silicone gel coating for applying is disposed under the polyurethane film layer.
  • the silicone gel coating has a small hole corresponding to the water permeable hole on the polyurethane film layer, the water absorbing layer is a foam water absorbing layer, and the water blocking layer is a strong water absorbing fiber layer;
  • the layer is bamboo fiber cloth.
  • the invention has the following beneficial effects: 1. Providing a water-absorbing layer with fast water absorption and a water-locking layer with strong water-locking to ensure proper temperature and humidity at the wound, and preventing the skin from being impregnated at the application site, The wound heals quickly; 2. The application effect is good, it is not easy to fall off, and it will not cause strain on the skin; 3. The whole dressing is non-toxic, non-irritating and comfortable to the skin.
  • Figure 1 is a cross-sectional view showing an embodiment of the present invention
  • a new type of foam composite wound dressing As shown in Fig. 1, a new type of foam composite wound dressing, the uppermost layer, that is, a layer away from the skin is a waterproof layer 4, which is a polyurethane film, and the lower layer of the waterproof layer 4 is a water lock layer 2, a water lock layer.
  • 2 is cellulose acylate, which has the functions of water absorption and water lock;
  • the transition layer 3 is a transition layer 3, the transition layer 3 is a non-woven fabric, the transition layer 3 is a water absorbing layer 1, and the water absorbing layer 1 is composed of a water absorbing foam.
  • a polyurethane film layer 5 which is connected with the aforementioned waterproof layer 4 to prevent exudate from oozing out from the side of the dressing, and also improves the comfort of the dressing, and is also convenient Packaging in the dressing production process.
  • the adhesive layer formed by the silicone gel under the polyurethane film layer 5 can well hold the dressing on the surface of the skin, and does not cause strain on the skin when the dressing is removed.
  • the polyurethane film layer 5 and the silicone gel coating are respectively provided with corresponding water permeable holes 51 and small holes 61 to accelerate the exudate at the wound from the holes into the water absorbing layer 1 .
  • the dressings provided in this embodiment are non-toxic and non-irritating to the human body, ensuring proper temperature and humidity at the wound, preventing the skin from being impregnated at the application site, and healing the wound quickly; fixing the effect by applying the silicone gel Good, not easy to fall off, and will not cause strain on the skin.
  • a new type of foam composite wound dressing As shown in Fig. 1, a new type of foam composite wound dressing, the uppermost layer, that is, a layer away from the skin is a waterproof layer 4, which is a polyurethane film, and the lower layer of the waterproof layer 4 is a water lock layer 2, a water lock layer.
  • 2 is acrylic cellulose, which has the dual functions of water absorption and water lock;
  • the transition layer 3 is the transition layer 3
  • the transition layer 3 is the bamboo fiber cloth
  • the lower layer of the transition layer 3 is the water absorption layer 1
  • the water absorption layer 1 is composed of the water absorbing foam, and absorbs water.
  • a polyurethane film layer 5 which is connected with the aforementioned waterproof layer 4 to prevent exudate from oozing out from the side of the dressing, and also improves the comfort of the dressing, and is also convenient Packaging in the dressing production process.
  • the adhesive layer formed by the medical pressure-sensitive adhesive under the polyurethane film layer 5 can fix the dressing on the skin surface well, and does not cause strain on the skin when the dressing is removed.
  • the polyurethane film layer 5 and the medical pressure sensitive adhesive layer are respectively provided with corresponding water permeable holes 51 and small holes 61 to accelerate the exudate at the wound from the holes into the water absorbing layer 1 .

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  • Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Biomedical Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Hematology (AREA)
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  • Dispersion Chemistry (AREA)
  • Dermatology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials For Medical Uses (AREA)

Abstract

一种泡沫复合伤口敷料，包括吸水层(1)和覆盖在吸水层(1)上方的锁水层(2)，吸水层(1)和锁水层(2)中间设有过渡层(3)，锁水层(2)上方覆盖有防水层(4)，吸水层(1)下方设有聚氨酯膜层(5)。该敷料通过吸水层(1)快速吸收伤口周围的水分，锁水层(2)吸收并锁住水分，防止水分返流，保证了伤口处合适的温度和湿度，防止贴敷处皮肤出现浸渍反应，伤口愈合快；利用硅凝胶贴敷固定效果好，不易脱落，也不会对皮肤造成拉伤；同时该敷料对人体无毒、无刺激。

Description

种新型泡沬复合伤口敷料
技术领域
本发明涉及一种医用敷料， 具体的说， 是一种新型泡沫复合伤口敷料。
背景技术
受伤或手术后的伤口需要用伤口敷料加以处理， 以吸收从伤口渗出的过多渗出液渗出 液， 使伤口能快速愈合。 但是现有的敷料存在一些不足： 当渗出液过多时， 吸水层并不能完 全吸收掉， 会再次从吸水层反渗出， 导致伤口处的皮肤被浸渍泡软， 愈合速度慢， 甚至出现 溃烂， 极大的加大了伤者的痛苦。
发明内容
为了解决上述现有技术的不足， 本发明提供一种新型泡沫复合伤口敷料， 能保证伤口处 有合适的温、 湿度， 伤口愈合快， 提高治疗效率， 减少伤者的痛苦。
为了达到上述目的， 本发明采用如下技术方案： 一种新型泡沫复合伤口敷料， 包括吸水 层和覆盖在所述吸水层上方的锁水层。
该发明通过吸水层将伤口处皮肤上的渗出液快速吸收， 再通过锁水层将吸水层内的渗出 液通过亲水基团将渗出液吸入， 吸入后锁水层材质迅速膨润， 形成一定强度的水凝胶体， 具 有良好的锁水能力， 即使有一定的压力作用其上， 水也不易返流渗出。 在仅有吸水层的情况 下， 水分得不到锁定， 渗出液容易返流而浸渍伤口。 在仅有锁水层的情况下， 渗出液被吸收 的速率不够快， 导致渗出液外溢而锁水层吸水不足， 对于伤口吸湿和周边清洁不利。
作为优选， 所述吸水层和所述锁水层中间设有过渡层。
由于吸水层吸收快， 而锁水层的吸水慢， 两者吸水速率差距较大， 设置过渡层可以将吸 水层的渗出液吸收， 加以短暂的储存， 再由锁水层慢慢吸走锁牢， 更能保证伤口处的合适湿 度。
作为优选， 所述锁水层上方覆盖有防水层。
在远离皮肤的一层设置防水层， 可以防止外源水分或其他细小灰尘及病菌等渗入敷料内 而对伤口产生伤害。
作为优选， 所述吸水层下方设有聚氨酯膜层， 所述聚氨酯膜层上设有若干透水孔。 贴近皮肤设有聚氨酯膜层， 可以防止渗出液从敷料的侧边渗出， 聚氨酯膜为无毒无害、 弹性佳的薄膜， 抗菌、 透气性好， 与皮肤直接接触亲柔， 无伤害， 提高舒适度， 渗出液从透 水孔进入吸水层。
作为优选， 所述聚氨酯膜层下方设有贴敷层， 所述贴敷层为硅凝胶涂层或医用压敏胶 层， 所述硅凝胶涂层或医用压敏胶层开有与所述聚氨酯膜层上的透水孔相对应的小孔。
硅凝胶涂层或医用压敏胶层用来贴敷固定住敷料， 硅凝胶或医用压敏胶无毒、 无味， 能 很好固定住敷料， 但是拆换敷料时不会对皮肤造成拉伤。
作为优选， 所述吸水层为泡沫吸水层。
泡沫材料多孔， 吸水性好， 而且还具有一定的保温性， 能保证伤口处合适的温湿度。 作为优选， 所述锁水层为强吸水纤维层。
强吸水纤维层无毒、 透气性好， 而且由于强吸水纤维内存在大量的亲水基团， 如 -0H、 - S03Na、 -COONa等， 从而对水分子产生强大的亲和力； 海绵、 泡沫等材料吸水后， 在一定压 力下， 水会很快返流渗出， 保水性差， 而强吸水纤维吸水后迅速膨润、 形成一定强度的水凝 胶体， 即使有一定的压力作用其上， 水也不易流出。
作为优选， 所述过渡层为无纺布或竹纤维布或棉布或麻布。
无纺布无毒、 无剌激， 透气性佳； 竹纤维布具有很强的抑菌抗菌能力， 吸湿透气性好。 作为优选， 所述防水层为聚氨酯膜， 所述吸水层下方设有聚氨酯膜层， 所述聚氨酯膜层 上设有若干透水孔， 所述聚氨酯膜层下方设有用于贴敷的硅凝胶涂层， 所述硅凝胶涂层开有 与所述聚氨酯膜层上的透水孔相对应的小孔， 所述吸水层为泡沫吸水层， 所述锁水层为强吸 水纤维层； 所述过渡层为竹纤维布。
通过实施上述的技术方案， 本发明具有如下的有益效果： 1.设置吸水快的吸水层和强锁 水的锁水层， 保证伤口处合适的温、 湿度， 防止贴敷处皮肤出现浸渍反应， 伤口愈合快； 2. 贴敷固定效果好， 不易脱落， 也不会对皮肤造成拉伤； 3.整个敷料对皮肤无毒、 无剌激， 舒 适度高。
附图说明
附图 1为本发明实施例的截面图；
其中， 1.吸水层； 2.锁水层； 3.过渡层； 4.防水层； 5.聚氨酯膜层； 51.透水孔； 6. 贴 敷层； 61.小孔。
具体实施方式
下面结合附图和实施例， 对本发明作进一步的说明。
需要说明的是， 以下仅是本发明的较佳实施方式， 故凡依本发明专利申请范围所述的构 造、 特征及原理所做的等效变化或修饰， 均包括于本发明专利申请范围内。 实施例 1 :
如附图 1所示， 一种新型泡沫复合伤口敷料， 最上一层， 即远离皮肤的一层是防水层 4， 为聚氨酯膜， 防水层 4的下一层为锁水层 2， 锁水层 2为丙烯酸纤维素， 具有吸水和锁 水双重功能； 锁水层 2下方为过渡层 3， 过渡层 3为无纺布， 过渡层 3下方为吸水层 1， 吸 水层 1由吸水泡沫构成， 吸水性强而且快速； 吸水层 1下方为聚氨酯膜层 5， 该聚氨酯膜层 5与前述防水层 4连接， 防止渗出液从敷料的侧边渗出， 也提高了敷料的舒适度， 同时还方 便敷料生产过程中的包装。 聚氨酯膜层 5下方为硅凝胶形成的贴敷层 6， 能很好地在皮肤表 面固定住敷料， 而且拆换敷料时不会对皮肤造成拉伤。 聚氨酯膜层 5和硅凝胶涂层分别设有 对应的透水孔 51和小孔 61， 加快伤口处的渗出液从孔内进入吸水层 1。
本实施例所提供的敷料， 制作材料均对人体无毒、 无剌激， 保证了伤口处合适的温湿 度， 防止贴敷处皮肤出现浸渍反应， 伤口愈合快； 利用硅凝胶贴敷固定效果好， 不易脱落， 也不会对皮肤造成拉伤。
实施例 2:
如附图 1所示， 一种新型泡沫复合伤口敷料， 最上一层， 即远离皮肤的一层是防水层 4， 为聚氨酯膜， 防水层 4的下一层为锁水层 2， 锁水层 2为丙烯酸纤维素， 具有吸水和锁 水双重功能； 锁水层 2下方为过渡层 3， 过渡层 3为竹纤维布， 过渡层 3下方为吸水层 1， 吸水层 1由吸水泡沫构成， 吸水性强而且快速； 吸水层 1下方为聚氨酯膜层 5， 该聚氨酯膜 层 5与前述防水层 4连接， 防止渗出液从敷料的侧边渗出， 也提高了敷料的舒适度， 同时还 方便敷料生产过程中的包装。 聚氨酯膜层 5下方为医用压敏胶形成的贴敷层 6， 能很好地在 皮肤表面固定住敷料， 而且拆换敷料时不会对皮肤造成拉伤。 聚氨酯膜层 5和医用压敏胶层 分别设有对应的透水孔 51和小孔 61， 加快伤口处的渗出液从孔内进入吸水层 1。

Claims

权 利 要 求 书
1.一种新型泡沬复合伤口敷料， 其特征在于： 包括吸水层 （1) 和覆盖在所 述吸水层 （1) 上方的锁水层 （2)。
2.根据权利要求 1所述一种新型泡沬复合伤口敷料， 其特征在于： 所述吸 水层 （1) 和所述锁水层 （2) 中间设有过渡层 （3)。
3.根据权利要求 1或 2所述一种新型泡沬复合伤口敷料， 其特征在于： 所 述锁水层 （2) 上方覆盖有防水层 （4)。
4.根据权利要求 1或 2所述一种新型泡沬复合伤口敷料， 其特征在于： 所 述吸水层 （1) 下方设有聚氨酯膜层 （5)， 所述聚氨酯膜层 （5) 上设有若干透 水孔 （51)。
5.根据权利要求 3所述一种新型泡沬复合伤口敷料， 其特征在于： 所述吸 水层 （1) 下方设有聚氨酯膜层 （5)， 所述聚氨酯膜层 （5) 上设有若干透水孔
(51)。
6.根据权利要求 4所述一种新型泡沬复合伤口敷料， 其特征在于： 所述聚 氨酯膜层 （5) 下方设有贴敷层 （6)， 所述贴敷层 （6) 为硅凝胶涂层或医用压 敏胶层， 所述硅凝胶涂层或医用压敏胶层开有与所述聚氨酯膜层 （5) 上的透水 孔 (51) 相对应的小孔 （61)。
7.根据权利要求 6所述一种新型泡沬复合伤口敷料， 其特征在于： 所述吸 水层 （1) 为泡沬吸水层。
8.根据权利要求 7所述一种新型泡沬复合伤口敷料， 其特征在于： 所述锁 水层 （2) 为强吸水纤维层。
9.根据权利要求 8所述一种新型泡沬复合伤口敷料， 其特征在于： 所述过 渡层 （3) 为无纺布或竹纤维布。
10.根据权利要求 3所述一种新型泡沬复合伤口敷料， 其特征在于： 所述防 水层 （4) 为聚氨酯膜， 所述吸水层 （1) 下方设有聚氨酯膜层 （5)， 所述聚氨 酯膜层 （5) 上设有若干透水孔 （51)， 所述聚氨酯膜层 （5) 下方设有用于贴敷 的硅凝胶涂层 （6)， 所述硅凝胶涂层 （6) 开有与所述聚氨酯膜层 （5) 上的透 水孔 （51) 相对应的小孔 （61)， 所述吸水层 （1) 为泡沬吸水层， 所述锁水层
(2) 为强吸水纤维层； 所述过渡层 （3) 为竹纤维布。
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