CN109938920B - 一种微负压泡沫敷料及其制造方法 - Google Patents
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Abstract
本发明公开了一种微负压泡沫敷料及其制造方法,敷料包括:发热剂层,覆盖发热剂层上的隔离组件,设置于发热剂层下的弹性记忆片,设置于弹性记忆片下的吸液负压垫,设置于吸液负压垫下的接触层,设置于吸液负压垫与接触层之间的密封膜,设置于接触层下的底层离型膜;本发明通过发热剂层产生热量使弹性记忆片向下膨胀压迫泡沫层,待热量散尽,密封膜、接触层与创面构成一个密闭坏境,产生微负压,操作简单,成本低,方便携带。
Description
技术领域
本发明涉及敷料领域,特别是一种微负压泡沫敷料。
背景技术
负压引流技术在临床上应用相当广泛,可以将人体的渗血、渗液、液化坏死的组织碎片以及化脓液等液化物质吸收到创面外部。促进新生血管生成,肉芽组织快速增长,从而加速伤口愈合速度,减轻病人痛楚。但目前临床上常用的VSD负压技术,存在操作复杂,成本高,不便于携带等缺陷;本发明解决这些问题。
发明内容
为解决现有技术的不足,本发明的目的在于提供一种微负压泡沫敷料及其制造方法,发热剂层产生热量使弹性记忆片向下膨胀压迫泡沫层,待热量散尽,密封膜、接触层与创面构成一个密闭坏境,产生微负压,操作简单,成本低,方便携带。
为了实现上述目标,本发明采用如下的技术方案:
一种微负压泡沫敷料,包括:发热剂层,覆盖发热剂层上的隔离组件,设置于发热剂层下的弹性记忆片,设置于弹性记忆片下的吸液负压垫,设置于吸液负压垫下的接触层,设置于吸液负压垫与接触层之间的密封膜,设置于接触层下的底层离型膜。
前述的一种微负压泡沫敷料,吸液负压垫为泡沫层。
前述的一种微负压泡沫敷料,泡沫层包括:软聚硅酮泡沫层,聚氨酯泡沫层。
前述的一种微负压泡沫敷料,发热剂层的配方按照质量比为:铁粉:活性炭:食盐:蛭石:水=(40±10):(15±10)):(5±3):(10±3):(5±3)。
前述的一种微负压泡沫敷料,隔离组件组成有:设置于发热剂层上的无纺布,覆盖于无纺布上的顶层离型膜。
前述的一种微负压泡沫敷料,弹性记忆片包括:记忆树脂片,PP片,PU片。
前述的一种微负压泡沫敷料,接触层为打孔硅凝胶层。
前述的一种微负压泡沫敷料,密封膜为聚氨酯薄膜。
前述的一种微负压泡沫敷料,底层离型膜上设置有开口部。
一种微负压泡沫敷料的制造方法,包括如下步骤:
步骤一,将硅凝胶膜平铺到水平面上,用机械打孔方式进行冲压打孔;
步骤二,将打孔后的硅凝胶薄膜平铺到复合板上,在上表面放上半球形吸液负压垫;
步骤三,将裁剪好的密封膜覆盖在吸液负压垫上,利用环形压辊将硅凝胶层和密封膜进行复合,得到半成品;
步骤四,将半成品转入真空操作台;
步骤五,将弹性记忆片放在密封膜上方,发热剂层涂于弹性记忆片上方;
步骤六,将裁剪好并涂有胶水的无纺布盖于上方,按压无纺布使其与发热剂层密封膜粘合;
步骤七,将裁剪好的离型膜分别放置在产品上方和下方的位置,用环形压辊进行复合;
步骤八,将产品取出,进行冲切成型,包装灭菌。
本发明的有益之处在于:
本发明由发热剂层产生热量使弹性记忆片向下膨胀压迫泡沫层,待热量散尽,密封膜、接触层与创面构成一个密闭坏境,产生微负压,无需采用VSD负压技术,操作简单,结构简单,成本低,体积小,方便携带;
微负压持续久,负压时间在48小时-72小时;
本发明的产品与创面接触层无胶水,不致敏,不粘连伤口,能够减轻患者痛楚。
附图说明
图1是本发明的一种实施例的结构示意图。
图中附图标记的含义:
1 发热剂层,2 弹性记忆片,3 吸液负压垫,4 接触层,5 密封膜,6 底层离型膜,601 开口部,7 无纺布,8 顶层离型膜。
具体实施方式
以下结合附图和具体实施例对本发明作具体的介绍。
一种微负压泡沫敷料,包括:发热剂层1,覆盖发热剂层1上的隔离组件,设置于发热剂层1下的弹性记忆片2,设置于弹性记忆片2下的吸液负压垫3,设置于吸液负压垫3下的接触层4,设置于吸液负压垫3与接触层4之间的密封膜5,设置于接触层4下的底层离型膜6。
作为一种实施例,吸液负压垫3为泡沫层;泡沫层的材料可以选择软聚硅酮,聚氨酯,明胶海绵;若选择软聚硅酮,则该层既是负压层也是吸收层。需要说明的是吸液负压垫3的材质不受限制。
作为一种优选,泡沫层的材料选择软聚硅酮泡沫材料;优点:质地柔软,对伤口产生机械压迫低;吸液量大,可吸收自身重量的6-8倍渗出液,原料易获取,与接触层4复合强度好;缺点:相较于聚氨酯泡沫,材料价格是其1.7倍。
作为另一种优选,泡沫层的材料选择聚氨酯泡沫材料;优点:价格低,质地较柔软,吸液量在自身重量4-6倍,原料易获取;缺点:与接触层4复合牢度不强。
作为另一种优选,泡沫层的材料选择明胶海绵;优点:吸液量大,与接触层4复合强度好;缺点:机械强度相较上述两种海绵较大,质地较粗糙,价格昂贵。
发热剂层1的配方按照质量比为:铁粉:活性炭:食盐:蛭石:水=(40±10):(15±10)):(5±3):(10±3):(5±3),活性炭和蛭石比例下调,加快散热速度,使弹性记忆片2变形收缩剧烈,负压明显,作为一种优选,发热剂层1的最优配方按照质量比为:铁粉:活性炭:食盐:蛭石:水=40:15:5:10:5。
隔离组件组成有:设置于发热剂层1上的无纺布7,覆盖于无纺布7上的顶层离型膜8。作为一种实施例,顶层离型膜8和底层离型膜6可以选择PET离型膜,OPP离型膜,PEK离型纸,CCK离型纸,格拉辛离型纸中的一种。
作为一种实施例,弹性记忆片2可以选择的材料包括:记忆树脂,PP,PU。
作为一种优选,接触层4为打孔硅凝胶层,打孔硅凝胶层是接触层4,硅凝胶利用增大与皮肤接触面积的方式与皮肤粘合。这样接触可在不使用胶水的前提下于皮肤粘合,避免将敷贴揭起使对伤口产生二次伤害。
作为一种实施例,密封膜5为聚氨酯薄膜,材质不受限制,也可以选择聚乙烯薄膜;聚丙烯薄膜;尼龙薄膜。
底层离型膜6上设置有开口部601,待撕开顶层离型膜8后,需要在底层离型膜6层上撕开一个小口,静待5min后,再将底层离型膜6层彻底撕去;这样使发热层与空气接触5min,产生足够的热量,使弹性记忆片2吸热膨胀变形,这样敷料贴到伤口上后,弹性记忆片2散热收缩就产生负压。
使用方法:将产品上层离型膜撕去,底层离型膜6层从开口部601撕开一个小口,静待1min后,将底层离型膜6层撕去,将微负压泡沫敷贴贴创面即可。
使用原理:将产品上方离型膜撕去,让空气接触到发热剂,产生热量使弹性记忆片2向下膨胀压迫泡沫层,此时将产品贴于创面处。待热量散尽,弹性记忆片2降温收缩欲回弹到原始状态,但由于聚氨酯薄膜层与打孔硅凝胶层复合层与创面构成了一个密闭坏境,因而产生微负压。
具体的制作过程:
步骤一:将硅凝胶膜平铺到水平面上,用机械打孔方式进行冲压打孔;
步骤二:将打孔后的硅凝胶薄膜平铺到复合板上,在上表面放上半球形吸液负压垫3;
步骤三:将裁剪好的密封膜5覆盖在吸液负压垫3上,利用环形压辊将硅凝胶层和密封膜5进行复合,得到半成品;
步骤四:将半成品转入真空操作台;
步骤五:弹性记忆片2放在密封膜5上方,发热剂层1涂于弹性记忆片2上方;
步骤六:将裁剪好并涂有少量胶水的无纺布7盖于上方,轻轻按压无纺布7,使其与发热剂层1密封膜5粘合;
步骤七:将裁剪好的离型膜分别放置在产品上方和下方合适位置,用环形压辊进行复合;
步骤八:将产品取出,进行冲切成型;包装灭菌即可。
按照如上的制作方法,制作了72个产品,召集72名溃疡患者志愿者;
让这72名溃疡患者进行接触试验,其中1为患者失访,以下是71人记录了日记卡的数据:
描述 | 人数/人 |
自述产品使用24h后产品负压消失 | 0 |
自述产品使用48h后产品负压消失 | 13 |
自述产品使用72h后产品负压消失 | 58 |
自述产品使用96h后产品负压消失 | 0 |
结果说明本产品的微负压持续久,负压时间在48小时-72小时。
本发明提供一种微负压泡沫敷料,发热剂层1产生热量使弹性记忆片2向下膨胀压迫泡沫层,待热量散尽,密封膜5、接触层4与创面构成一个密闭坏境,产生微负压,操作简单,成本低,方便携带。
以上显示和描述了本发明的基本原理、主要特征和优点。本行业的技术人员应该了解,上述实施例不以任何形式限制本发明,凡采用等同替换或等效变换的方式所获得的技术方案,均落在本发明的保护范围内。
Claims (9)
1.一种微负压泡沫敷料,其特征在于,包括:发热剂层,覆盖所述发热剂层上的隔离组件,设置于所述发热剂层下的弹性记忆片,设置于所述弹性记忆片下的吸液负压垫,设置于所述吸液负压垫下的接触层,设置于所述吸液负压垫与接触层之间的密封膜,设置于所述接触层下的底层离型膜;
将敷料上方离型膜撕去,让空气接触到发热剂,发热剂层产生热量使弹性记忆片向下膨胀压迫吸液负压垫,此时将敷料贴于创面处,待热量散尽,弹性记忆片降温收缩回弹到原始状态,密封膜、接触层与创面构成一个密闭坏境,产生微负压;
发热剂层的配方按照质量比为:铁粉:活性炭:食盐:蛭石:水=40±10:15±10:5±3:10±3:5±3。
2.根据权利要求1所述的一种微负压泡沫敷料,其特征在于,所述吸液负压垫为泡沫层。
3.根据权利要求2所述的一种微负压泡沫敷料,其特征在于,所述泡沫层包括:软聚硅酮泡沫层,聚氨酯泡沫层。
4.根据权利要求1所述的一种微负压泡沫敷料,其特征在于,所述隔离组件组成有:设置于所述发热剂层上的无纺布,覆盖于所述无纺布上的顶层离型膜。
5.根据权利要求1所述的一种微负压泡沫敷料,其特征在于,所述弹性记忆片包括:记忆树脂片,PP片,PU片。
6.根据权利要求1所述的一种微负压泡沫敷料,其特征在于,所述接触层为打孔硅凝胶层。
7.根据权利要求1所述的一种微负压泡沫敷料,其特征在于,所述密封膜为聚氨酯薄膜。
8.根据权利要求1所述的一种微负压泡沫敷料,其特征在于,所述底层离型膜上设置有开口部。
9.一种微负压泡沫敷料的制造方法,其特征在于,包括如下步骤:
步骤一,将硅凝胶膜平铺到水平面上,用机械打孔方式进行冲压打孔;
步骤二,将打孔后的硅凝胶薄膜平铺到复合板上,在上表面放上半球形吸液负压垫;
步骤三,将裁剪好的密封膜覆盖在吸液负压垫上,利用环形压辊将硅凝胶层和密封膜进行复合,得到半成品;
步骤四,将半成品转入真空操作台;
步骤五,将弹性记忆片放在密封膜上方,发热剂层涂于弹性记忆片上方;
步骤六,将裁剪好并涂有胶水的无纺布盖于上方,按压无纺布使其与发热剂层密封膜粘合;
步骤七,将裁剪好的离型膜分别放置在产品上方和下方的位置,用环形压辊进行复合;
步骤八,将产品取出,进行冲切成型,包装灭菌。
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CN114470295B (zh) * | 2021-12-28 | 2023-05-30 | 盐城工学院 | 一种载药水凝胶复合织物用于创伤敷料的制备方法 |
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