CN108926732A - 一种适用于糖尿病足护理的载药缓释水凝胶敷料 - Google Patents

一种适用于糖尿病足护理的载药缓释水凝胶敷料 Download PDF

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CN108926732A
CN108926732A CN201811056638.1A CN201811056638A CN108926732A CN 108926732 A CN108926732 A CN 108926732A CN 201811056638 A CN201811056638 A CN 201811056638A CN 108926732 A CN108926732 A CN 108926732A
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diabetic foot
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王晓文
陈东初
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Foshan University
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    • A61L15/16Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/22Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
    • A61L15/26Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof
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    • A61LMETHODS 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
    • A61L15/00Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/20Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing organic materials
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61L15/00Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/42Use of materials characterised by their function or physical properties
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS 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
    • A61L15/00Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/42Use of materials characterised by their function or physical properties
    • A61L15/44Medicaments
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS 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
    • A61L2300/00Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
    • A61L2300/20Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices containing or releasing organic materials
    • A61L2300/216Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices containing or releasing organic materials with other specific functional groups, e.g. aldehydes, ketones, phenols, quaternary phosphonium groups
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61L2300/00Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
    • A61L2300/40Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a specific therapeutic activity or mode of action
    • A61L2300/412Tissue-regenerating or healing or proliferative agents

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Abstract

本发明公开了一种适用于糖尿病足护理的载药缓释水凝胶敷料,包括基材层和覆盖于所述基材层表面上的水凝胶层,所述基材层为吸水性无纺布,所述水凝胶层是以亲水基和疏水基的两亲嵌段聚合而成的水溶液在32‑40摄氏度或长时间静置后固化而成,所述亲水基为聚乙二醇,所述疏水基为合成类直链脂肪族聚酯,所述水凝胶层固化前混合有芦荟素或姜黄素溶液。所述该水凝胶为温敏水凝胶,在0‑25摄氏度为流动性水溶胶可与芦荟素或姜黄素溶液混合,进行载药;在体表温度32‑40摄氏度或长时间静置转变为不流动的水凝胶,可用作糖尿病足护理的敷料,进行药物缓释。

Description

一种适用于糖尿病足护理的载药缓释水凝胶敷料
技术领域
本发明专利属于生物医用材料领域,特别涉及一种适用于糖尿病足护理的载药缓释水凝胶敷料。
背景技术
糖尿病发展中最常见的并发症之一为糖尿病足,是由于患者血液中糖量增高,使得患者皮肤发生干燥、溃疡,从而引起的一种足部皮肤溃烂和坏死的疾病,严重时导致整个足部坏死而发货所能肢,严重限制其生活,给患者带来较大的痛苦。在临床治疗中,给予有效的护理则可以提高患者的治疗效果,缓解其临床症状,减少对其的影响。目前,糖尿病足发病后对患者的影响仍然较大,患者不仅有明显的疼痛感,而且限制其正常活动,而介入护理干预后则可以显著缓解患者的症状,减轻对其身体的影响。敷料选择的原则是针对伤口局部情况和治疗目的做出恰当的选择。水凝胶是近年来得到飞速发展的一种湿性医用敷料,其主要成分是具有三维网状结构的高分子凝胶,主要起到吸收渗出液,保持伤口湿润,清创伤口愈合的作用。水凝胶内部含有大量水,可以长时间保持伤口湿润,而且其内部多孔网状结构赋予其载药缓释性能,不仅有利于提高治疗效果,还可以减少换药频率,减轻由换药引起的二次痛苦和避免对伤口造成的二次伤害。
水凝胶以其自身的结构特点,在医用敷料应用中得到了广泛的研究和应用。聚乙二醇是一种水溶性聚醚性高分子化合物,广泛应用于医药,卫生,食品,它是一类理想的制备水凝胶敷料的材料并且已获美国食品药物管理的认可。聚乳酸,聚乳酸-羟基乙酸共聚物,聚己内酯,聚对苯二甲酸丁二醇酯,聚丁二酸丁二醇酯等合成类直链脂肪族聚酯都是制备两亲嵌段聚合物经常使用的可生物降的嵌段化合物,都是制备水凝胶敷料比较理想的原材料。但是并非所有常用的清创、愈伤药物均适用于上述的嵌段化合物制得的水凝胶。
发明内容
本发明专利要解决的技术问题是提供一种适用于糖尿病足护理的复合水凝胶敷料,该敷料需要满足糖尿病足伤口护理的多种要求,而且设计合理,结构简单,使用方便,并兼具透气、保湿、载药缓释、渗液管理等功能。
一种适用于糖尿病足护理的载药缓释水凝胶敷料,包括基材层和覆盖于所述基材层表面上的水凝胶层,所述基材层为吸水性无纺布,所述水凝胶层是以亲水基和疏水基的两亲嵌段聚合而成的水溶液在32-40摄氏度或长时间静置后固化而成,所述亲水基为聚乙二醇,所述疏水基为合成类直链脂肪族聚酯,所述水凝胶层固化前混合有芦荟素或姜黄素溶液。
其中,所述姜黄素溶液由姜黄素溶于乙醇而成。
进一步,所述亲水基为A组分,所述疏水基为B组分,所述水溶液由偶联剂二异氰酸酯将A组分和B组分以A-B-A两亲三嵌段或A-B-A-B-A两亲多嵌段聚合而成。
进一步,所述偶联剂为4,4'-二环己基甲烷二异氰酸酯或异佛尔酮二异氰酸酯。
进一步,所述合成类直链脂肪族聚酯为聚乳酸、聚乳酸-羟基乙酸共聚物、聚己内酯或聚对苯二甲酸丁二醇酯。
进一步,所述的吸水性无纺布厚度为0.5mm-5.0mm,水凝胶层厚度为0.1mm-2.0mm。
本发明的有益效果是:所述该水凝胶为温敏水凝胶,在0-25摄氏度为流动性水溶胶可与芦荟素或姜黄素溶液混合,进行载药;在体表温度32-40摄氏度或长时间静置转变为不流动的水凝胶,可用作糖尿病足护理的敷料,进行药物缓释。该载药缓释水凝胶敷料具有透气、保湿、药物缓释及渗液管理等功能。凝胶后的水凝胶层为疏水层,吸水性无纺布基材为吸水层,创面的多余渗液可以从水凝胶层导出至吸水性无纺布层,这种功能即可以缓解渗液过量积存,又可以保证创面与复合敷料不粘黏,避免了换药的二次伤害,有利于糖尿病足的伤口愈合。
具体实施方式
一种适用于糖尿病足护理的载药缓释水凝胶敷料,包括基材层和覆盖于所述基材层表面上的水凝胶层,所述基材层为吸水性无纺布,所述水凝胶层是以亲水基和疏水基的两亲嵌段聚合而成的水溶液在32-40摄氏度或长时间静置后固化而成,所述亲水基为聚乙二醇,所述疏水基为合成类直链脂肪族聚酯,所述水凝胶层固化前混合有芦荟素或姜黄素溶液。
其中,所述姜黄素溶液由姜黄素溶于乙醇而成。
进一步,所述亲水基为A组分,所述疏水基为B组分,所述水溶液由偶联剂二异氰酸酯将A组分和B组分以A-B-A两亲三嵌段或A-B-A-B-A两亲多嵌段聚合而成。
进一步,所述偶联剂为4,4'-二环己基甲烷二异氰酸酯或异佛尔酮二异氰酸酯。
进一步,所述合成类直链脂肪族聚酯为聚乳酸、聚乳酸-羟基乙酸共聚物、聚己内酯或聚对苯二甲酸丁二醇酯。
进一步,所述的吸水性无纺布厚度为0.5mm-5.0mm,水凝胶层厚度为0.1mm-2.0mm。
对于本发明所属技术领域的普通技术人员来说,在不脱离本发明构思的前提下还可以做出若干简单推演或替换,而不必经过创造性的劳动。因此,本领域技术人员根据本发明的揭示,对本发明做出的简单改进都应该在本发明的保护范围之内。上述实施例为本发明的优选实施例,凡与本发明类似的工艺及所作的等效变化,均应属于本发明的保护范畴。

Claims (6)

1.一种适用于糖尿病足护理的载药缓释水凝胶敷料,包括基材层和覆盖于所述基材层表面上的水凝胶层,所述基材层为吸水性无纺布,所述水凝胶层是以亲水基和疏水基的两亲嵌段聚合而成的水溶液在32-40摄氏度或长时间静置后固化而成,所述亲水基为聚乙二醇,所述疏水基为合成类直链脂肪族聚酯,其特征在于:所述水凝胶层固化前混合有芦荟素或姜黄素溶液。
2.根据权利要求1所述的适用于糖尿病足护理的载药缓释水凝胶敷料,其特征在于:所述姜黄素溶液由姜黄素溶于乙醇而成。
3.根据权利要求1或2所述的适用于糖尿病足护理的载药缓释水凝胶敷料,其特征在于:所述亲水基为A组分,所述疏水基为B组分,所述水溶液由偶联剂二异氰酸酯将A组分和B组分以A-B-A两亲三嵌段或A-B-A-B-A两亲多嵌段聚合而成。
4.根据权利要求3所述的适用于糖尿病足护理的载药缓释水凝胶敷料,其特征在于:所述偶联剂为4,4'-二环己基甲烷二异氰酸酯或异佛尔酮二异氰酸酯。
5.根据权利要求3所述的适用于糖尿病足护理的载药缓释水凝胶敷料,其特征在于:所述合成类直链脂肪族聚酯为聚乳酸、聚乳酸-羟基乙酸共聚物、聚己内酯或聚对苯二甲酸丁二醇酯。
6.根据权利要求1所述的适用于糖尿病足护理的载药缓释水凝胶敷料,其特征在于:所述的吸水性无纺布厚度为0.5mm-5.0mm,水凝胶层厚度为0.1mm-2.0mm。
CN201811056638.1A 2018-09-11 2018-09-11 一种适用于糖尿病足护理的载药缓释水凝胶敷料 Pending CN108926732A (zh)

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Application publication date: 20181204