CN114452435B - 一种能够快速生效的高亲和液体敷料 - Google Patents
一种能够快速生效的高亲和液体敷料 Download PDFInfo
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- CN114452435B CN114452435B CN202111349317.2A CN202111349317A CN114452435B CN 114452435 B CN114452435 B CN 114452435B CN 202111349317 A CN202111349317 A CN 202111349317A CN 114452435 B CN114452435 B CN 114452435B
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Abstract
本发明公开了一种能够快速生效的高亲和液体敷料,所述能够快速生效的高亲和液体敷料的配方中包括下述成分:复合抑菌剂1.3~2.5%,成膜剂0.2—1.5%,止疼剂0.02—0.1%,钙、硅离子生物活性缓冲液8~10%,改性生物活性玻璃负载分子筛0.5‑20%,保湿剂1.2—6%,无水乙醇0.2—1.5%,其余为去离子水;所述复合抑菌剂为NAGO®VEC或NAGO®VAC之一的植物提取抑菌剂与奥替尼啶盐酸盐、聚六亚甲基双胍、聚已双胍中的至少一种复配而成。通过上述方式,本发明具有良好的生物相容性,能够在创面表面形成抑菌保护层,促进伤口快速吸液止血和加速愈合,特别适用于各种急性创口以及慢性创面清创后的协同护理,本发明可以制作的成品包括但不限于械字号的功能敷料和消字号的消毒用品。
Description
技术领域
本发明涉及医用敷料领域,特别是涉及一种能够快速生效的高亲和液体敷料。
背景技术
因为机械、物理、化学、生物或者病理性原因造成的身体损伤创面修复是医学中的一个古老课题,传统的方式是纱布、棉垫、敷贴等敷料覆盖伤口协助使其愈合。但是传统的方式愈合速度慢且容易感染,尤其是对于一些急创性伤口的紧急止血和慢性创面(如浅II度烧烫伤、糖尿病足、溃疡、褥疮)的后续护理的效果并不尽如人意。随着时代的发展,生物活性玻璃作为一种新型医用材料由于具有良好生物相容性,且内部具有大量的微孔通道可以方便营养成分的传递、胞外基质中的蛋白质和肽的黏附和加快含水硅酸凝胶层的生成速度,从而能够加快伤口愈合速度,因此作为敷料的原料得到广泛应用。但是实际应用中我们发现现有的生物活性玻璃敷料中直接使用的生物活性玻璃原料的生物相容性不够好,影响了敷料的实际应用效果,因此,本申请人发明了一种生物活性玻璃的制备方法(专利申请号ZL 201610870495.2),通过对生物活性玻璃表面补充温和的动物材料,提高与人体的相容性和亲和力,降低过敏和排异反应。取得了良好的经济效益和社会效益。但是为了进一步提高产品的使用效果,我们其作用机理进行进行了进一步的研讨。发现生物活性玻璃能够取得良好的愈合效果的原因在于当生物活性玻璃进入人体体液中时,会在体液环境下表面沉积羟基磷灰石物质。由于羟基磷灰石是组成骨骼的重要原料,它能与机体组织在界面上实现化学键性结合,其在体内有一定的溶解度,能释放对机体无害的离子,能参与体内代谢,对骨质增生有刺激或诱导作用,能促进缺损组织的修复,显示出生物活性,所以创面愈合的效果与羟基磷灰石的成矿速度息息相关,而正常情况下的羟基磷灰石完全成矿时间大约为21.5hrs,即使使用纳米级生物活性玻璃作为原料其成矿时间也要超过1hrs。这种矿化时间上的差距会出现促进愈合速度偏慢且有敷料或新生成的矿化物被血液溢出流失的风险,并且目前市场上功能敷料没有兼具吸液、抑菌和促进愈合的三重效果,且材料成本和售价偏高,影响了敷料的实际应用效果和批量推广。
发明内容
本发明主要解决的技术问题是提供一种敷料,能够兼具吸液、抑菌和促进愈合的三重效果,从而提高急性创面愈合的速度和质量,减轻病患的痛苦。
为解决上述技术问题,本发明采用的一个技术方案是:提供一种能够快速生效的高亲和液体敷料,所述能够快速生效的高亲和液体敷料的配方中包括下述成分:
其余为去离子水;
在本发明一个较佳实施例中,所述成膜剂为聚乙烯醇、结冷胶和出芽短梗酶多糖(INCI Name:Pullulan)中的一种或几种。
在本发明一个较佳实施例中,所述止疼剂为冰片与薄荷脑中的一种或两种。
在本发明一个较佳实施例中,所述钙、硅离子生物活性缓冲液的一种制备方法为:
第一步,选取钙元素≥12%,硅元素≥20%的,磷元素≥1.5%的生物活性玻璃经表面动物亲和处理后制成含有1-30纳米微孔的动物亲和生物活性玻璃粉末;
第二步,将上述动物亲和生物活性玻璃粉末放入去离子水在80℃下恒温浸泡72hrs,控制 PH值在10.2~11.8之间,检测浸出离子浓度,当浸出离子浓度≥5000ppm时为浸出终点;
第三步,提取浸出液,然后通过孔径为0.45微米的微孔过滤器过滤后即可得到相应的钙、硅离子生物活性缓冲液。
在本发明一个较佳实施例中,所述钙、硅离子生物活性缓冲液的另一种制备方法为:第一步,选取钙元素≥12%,硅元素≥20%的,磷元素≥1.5%的生物活性玻璃经表面动物亲和处理后制成含有1-30纳米微孔的动物亲和生物活性玻璃粉末;
第二步,将上述动物亲和生物活性玻璃与5%浓度的氢氧化钾水溶液按照5:1~5的比例配比后加热到60℃超声波处理;
第三步,室温抽提固体的动物亲和生物活性玻璃粉末浸入3mol/L浓度的氯化钙中缓慢搅拌12hrs,进行钙化改性;
第四步,将改性后的动物亲和生物活性玻璃粉末浸入去离子水内恒温浸泡72hrs,控制PH 值在9.1~14.1之间,检测浸出离子浓度,当浸出离子浓度≥5000ppm时为浸出终点;
第五步,提取浸出液,然后通过孔径为0.45微米的微孔过滤器过滤后即可得到相应的钙、硅离子生物活性缓冲液。
在本发明一个较佳实施例中,所述改性生物活性玻璃负载分子筛的制备方案如下:
第一步,选取钙元素≥12%,硅元素≥20%的,磷元素≥1.5%的生物活性玻璃经表面动物亲和处理后制成含有1-30纳米微孔的动物亲和生物活性玻璃粉末;
第二步,将上述动物亲和生物活性玻璃与5%浓度的氢氧化钾水溶液按照5:1~5的比例配比后加热到60℃超声波处理;
第三步,然后多批次将分子筛添加入混合液中继续超声波处理6~24h,所述分子筛的添加总量为所述动物亲和生物活性玻璃的一半;
第四步,过滤溶液,使用去离子水对剩余固体超声清洗至少3次后除水干燥,得到生物活性玻璃负载的改性分子筛,其中干燥温度为100℃,干燥时间为2hrs。
所述分子筛为沸石分子筛,所述分子筛的规格优选为粒径2-4um,标准孔径0.3-1纳米,静态水吸附比例≥20-30%。其中优选孔径为0.3纳米,所述静态水吸附比例为25%的分子筛。
在本发明一个较佳实施例中,所述保湿剂为医用甘油与海藻糖按照5:1~25的比例复配的混合物。
本发明的有益效果是:本发明具备良好的生物学相容性,能够通过在创面表面形成抑菌保护层,维持伤口愈合所需的酸碱微环境、提供创面愈合所需无机元素,促进伤口快速愈合,又通过高钙离子的分子筛实现快速止血的效果,同时减少疤痕产生。而且由于表面羟基磷灰石成矿速度缩短至10~15min之间,因此特别适用于各种急性创口(如刺伤、挤压伤、玻璃碎片伤、钝挫伤、手术切口、火器伤)以及慢性创面(如浅II度烧烫伤、糖尿病足、溃疡、褥疮)清创后的协同护理,而且可以降低价格昂贵的生物活性玻璃物料在敷料中的使用数量,进一步降低生产的成本,从而有助于实现更高的药耗比。本发明可以制作的成品包括但不限于械字号的功能敷料和消字号的消毒用品。
附图说明
图1是生物活性玻璃人工体液内羟基磷灰石成矿原理示意图;
图2是羟基磷灰石在人工体液内成矿后的FT-IR谱;
图3是缓冲液中72hrs浸出IR图。
具体实施方式
下面结合附图对本发明的较佳实施例进行详细阐述,以使本发明的优点和特征能更易于被本领域技术人员理解,从而对本发明的保护范围做出更为清楚明确的界定。
请参阅图1到图3,本发明实施例包括:
实施例1
一种能够快速生效的高亲和液体敷料,所述能够快速生效的高亲和液体敷料的配方中包括下述成分:
其余为去离子水。
本实施例中所述钙、硅离子生物活性缓冲液的制备方法如下:
第一步,选取钙元素≥12%,硅元素≥20%的,磷元素≥1.5%的生物活性玻璃经表面动物亲和处理后制成含有1-30纳米微孔的动物亲和生物活性玻璃粉末;
第二步,将上述动物亲和生物活性玻璃粉末放入去离子水在80℃下恒温浸泡72hrs,控制 PH值在10.2~11.8之间,检测浸出离子浓度,当浸出离子浓度≥5000ppm时为浸出终点;
第三步,提取浸出液,然后通过孔径为0.45微米的微孔过滤器过滤后即可得到相应的钙、硅离子生物活性缓冲液。
本实施例中改性生物活性玻璃负载分子筛的制备方案如下:
第一步,选取钙元素≥12%,硅元素≥20%的,磷元素≥1.5%的生物活性玻璃经表面动物亲和处理后制成含有1-30纳米微孔的动物亲和生物活性玻璃粉末;
第二步,将上述动物亲和生物活性玻璃与5%浓度的氢氧化钾水溶液按照5:1~5的比例配比后加热到60℃超声波处理;
第三步,量取所述动物亲和生物活性玻璃粉末一半质量的沸石分子筛,然后多批次将分子筛添加入混合液中继续超声波处理6~24hrs,所述沸石分子筛的规格为粒径2-4um,标准孔径0.3-1纳米,静态水吸附比例≥20-30%,优选添加其中孔径0.3纳米,静态谁吸附比例为25%的产品;
第四步,过滤溶液,使用去离子水对剩余固体超声清洗至少3次后除水干燥,得到生物活性玻璃负载的改性分子筛,其中干燥温度为100℃,干燥时间为2hrs。
实施例2
一种能够快速生效的高亲和液体敷料,所述能够快速生效的高亲和液体敷料的配方中包括下述成分:
其余为去离子水。
本实施例中所述钙、硅离子生物活性缓冲液的制备方法如下:
第一步,选取钙元素≥12%,硅元素≥20%的,磷元素≥1.5%的生物活性玻璃经表面动物亲和处理后制成含有1-30纳米微孔的动物亲和生物活性玻璃粉末;
第二步,将上述动物亲和生物活性玻璃与5%浓度的氢氧化钾水溶液按照5:1~5的比例配比后加热到60℃超声波处理;
第三步,室温抽提固体的动物亲和生物活性玻璃粉末浸入3mol浓度的氯化钙中缓慢搅拌12 小时,进行钙化改性,其中搅拌方式为磁力搅拌,磁力搅拌速度为800~1000转/秒,此处通过搅拌浸泡进行钙化改性的原因是生物活性玻璃的微观结构框架是基于Si原子的四面框架结构,其中Si原子为四价,其化学键分别连接有钠、钾和氧等原子,为了进一步提高生物活性玻璃中浸出时的类羟基磷酸石结构的生成,提高分子中钙元素的浓度,所以预先进行钙化处理,将分子中钠和钾由钙元素取代,由于这个离子置换过程是一种化学平衡过程,所以需要一定的温度促进离子活跃,溶液既要有一定的运动,又不能运动速度过大,影响平衡方向,所以只能采取低速搅拌或者使用磁力搅拌器搅拌;
第四步,将改性后的动物亲和生物活性玻璃粉末浸入去离子水内恒温浸泡72小时,控制PH 值在9.1~14.1之间,检测浸出离子浓度,当浸出离子浓度≥5000ppm时为浸出终点;
第五步,提取浸出液,然后通过孔径为0.45微米的微孔过滤器过滤后即可得到相应的钙、硅离子生物活性缓冲液。
本实施例中改性生物活性玻璃负载分子筛的制备方案如下:
第一步,选取钙元素≥12%,硅元素≥20%的,磷元素≥1.5%的生物活性玻璃经表面动物亲和处理后制成含有1-30纳米微孔的动物亲和生物活性玻璃粉末;
第二步,将上述动物亲和生物活性玻璃与5%浓度的氢氧化钾水溶液按照5:1~5的比例配比后加热到60℃超声波处理;
第三步,量取所述动物亲和生物活性玻璃粉末一半质量的沸石分子筛,然后多批次将分子筛添加入混合液中继续超声波处理6~24hrs,所述沸石分子筛的规格为粒径2-4um,标准孔径0.3-1纳米,静态水吸附比例≥20-30%,优选添加其中孔径0.3纳米,静态谁吸附比例为25%的产品;
第四步,过滤溶液,使用去离子水对剩余固体超声清洗至少3次后除水干燥,得到生物活性玻璃负载的改性分子筛,其中干燥温度为100℃,干燥时间为2hrs。
上述两种实施例中内使用广州艾卓生物科技股份有限公司生产的的VEC和VAC植物提取抑菌剂中VEC包含肉桂树皮提取物、丁香花蕾提取物、茵陈蒿提取物、厚朴树皮提取物、苦参提取物、大豆提取物活性物、1,2-己二醇、丁二醇。VEC组成包括牡丹根皮提取物、茵陈蒿提取物、肉桂树皮提取物、丁香花蕾提取物、五倍子提取物、1,2-己二醇、丁二醇。所述植物提取抑菌剂一方面可以通过影响细胞壁和细胞膜通透性及其功能的同时影响菌体细胞膜电位,使细菌新陈代谢减慢,最终死亡;另一方面能够通过干扰菌体内部相关合成酶系统,影响菌体能量代谢及物质合成和干扰核酸和蛋白质合成,阻碍遗传物质复制、转录,干扰蛋白质合成,使菌体生长与繁殖受到抑菌,进而导致微生物的死亡。总体而言具有温和协同抗敏、高效抑菌和配伍性良好的特点,且符合广谱抗菌、强抑菌性、温和、低刺激、天然绿色来源的抑菌剂发展趋势,与新一代的环保抗菌剂奥替尼啶盐酸盐、聚六亚甲基双胍、聚已双胍等具有良好的协同作用。
所述实施例1与实施例2中缓冲液的配制是在本申请人自有专利的动物亲和生物活性玻璃的基础上通过浸出制的,通过这种方式制取的缓冲液为半矿物化缓冲液,有利于提高创口表面的矿物化速度。其中实施例1与实施例2中浸出方法的区别在于浸出2中最终缓冲液内钙离子比例更高,因而后期矿物化速度相对更快。使用动物亲和生物活性玻璃的原因是生物活性玻璃经过柞蚕蛋白处理之后,与人体皮肤的相容性更好,可以减少整个液体敷料与皮肤接触时的过敏反应。
所述实施例中采用动物亲和生物活性玻璃作为沸石分子筛的载体的原因是沸石分子筛虽然具有良好的止血效果,但是沸石分子筛与创口血液接触时,会产生短暂的局部高热,引起不适,而负载改性后会有效降低高热灼伤和不适,提高治愈效果和生存率。
本发明的工作原理如下:
形成类羟基磷灰石结构物的过程是生物活性玻璃的矿化过程,也是生物活性玻璃用作敷料快速促进治愈皮肤创口的主要因素之一,普通生物活性玻璃45S5用作敷料时,其表面成矿机制见附图1,在模拟人工体液内成矿时间,基本要在21.5hrs左右,其成矿后的FT-IR谱图见图2,即使使用纳米级生物活性玻璃其成矿时间一般也在1hrs左右,而在本申请中缓冲液内各浸出离子比例与生物活性玻璃中基本相同,其72hrs浸出IR图见图3,由图2和图3中波峰形状对比可以看出,在缓冲液中的已经出现了类羟基磷灰石结构,与常规的生物活性玻璃敷料在体液内成矿过程相对比,我们把这种还没有接触到体液,且主要以离子形态为主的情况称之为半矿化,由于此状态并不稳定,当缓冲液中的类类羟基磷灰石结构接触到体液之后,会迅速反应生产结构较为稳定的类羟基磷灰石并沉积在创口附近,也就是完成成矿步骤。经实际验证,其完全矿化时间为10~15分钟,速度远远超越普通的介孔生物活性玻璃,与纳米机生物活性玻璃相比,其成矿速度也有显著提高。而快速完全矿化对于促进急性创口愈合、特别是糖尿病创口、褥疮等难愈合、癌症术后复杂环境难愈合创口、已感染术后难愈合创口有非常好的效果,具体数据见下表5~8,由数据可以看出整体愈合时间明显缩短。在此基础上,我们采用改性生物活性玻璃负载的分子筛加强吸液和止血的能力,实现急性创伤出血患者快速止血的效果,具体数据见下表9,由表中可见,实施例1平均止血时间为26s左右最短时间为17s,最长时间为45s,实施例2平均止血时间为24s左右,最短时间为15s,最长时间为35s,相对而言实施例2的止血速度略快,且数据范围集中度更好。
本发明相关检测数据如下:
1.农药残留测试分析
表1农药残留测试表
2、急性经口毒性试验:
表2受试物对小鼠急性经口毒性试验结果
检测依据:2015版化妆品安全技术规范;
试验方法:a)剂量:正式试验采用一次最大限度试验,实验设计受试物剂量为5000mg/kg 体重;b)染毒:按0.2ml/10g体重的量经口灌胃给予试验用液,灌胃前动物禁食4h,自由饮水;c)观察:试验观察14天,记录中毒症状及死亡情况。
试验结果:观察期内所有受试动物未见明显中毒症状及死亡,实验动物大体解剖未见异常。故小鼠急性经口毒性LD50>5000mg/kg体重,属实际无毒级物质。
3、急性经皮毒性试验:
表3受试物对小鼠急性经口毒性试验结果
检测依据:2015版化妆品安全技术规范;
试验结果:观察期内所有受试动物未见明显中毒症状及死亡,实验动物大体解剖未见异常。
故小鼠急性经皮毒性LD50>2500mg/kg体重,属微毒级物质。
4、急性皮肤刺激性试验:
表4,受试物对家兔急性皮肤刺激性试验
检测依据:2015版化妆品安全技术规范;
试验结果:各观察时点均未观察到该受试物对家兔皮肤造成刺激反应。24、48和72小时各观察时点最高积分均值为0。根据方法皮肤刺激强度分级标准,该受试物对家兔急性皮肤刺激性为无刺激性反应。
5普通创伤愈合分析
表5:试验组和对照组受试者治疗后创面愈合分析表
Ps:实施例1参考配方治疗数据。
6、糖尿病创口愈合分析
表6:试验组和对照组受试者治疗后创面愈合分析表
Ps:采用实施例2参考配方治疗数据。
7、肺癌症术后复杂环境难愈合分析
表7:试验组和对照组受试者治疗后创面愈合分析表
Ps:采用实施例2参考配方治疗数据。
8、已感染术后难愈合创口分析。
表8:试验组和对照组受试者治疗后创面愈合分析表
Ps:采用实施例2参考配方治疗数据。
9、快速止血测试:
表9、快速止血测试表
Ps;均为急性创口出血患者,包含动脉和静脉出血情况。
统计结果表明实施例2的止血速度略快与实施例1的止血速度且数据分布集中度更好。
以上所述仅为本发明的实施例,并非因此限制本发明的专利范围,凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换,或直接或间接运用在其他相关的技术领域,均同理包括在本发明的专利保护范围内。
Claims (9)
1.一种能够快速生效的高亲和液体敷料,所述能够快速生效的高亲和液体敷料的配方中包括下述成分:复合抑菌剂1.3~2.5%,成膜剂0.2—1.5%,止疼剂0.02—0.1%,钙、硅离子生物活性缓冲液8~10%,改性生物活性玻璃负载分子筛0.5—20%,保湿剂1.2—6%,无水乙醇0.2—1.5%,其余为去离子水,所述复合抑菌剂为VEC或VAC之一的植物提取抑菌剂与奥替尼啶盐酸盐、聚六亚甲基双胍、聚已双胍中的至少一种复配而成,其特征在于,所述改性生物活性玻璃负载分子筛的制备方案如下:
第一步,选取钙元素≥12%,硅元素≥20%的,磷元素≥1.5%的生物活性玻璃经表面动物亲和处理后制成含有1-30纳米微孔的动物亲和生物活性玻璃粉末;
第二步,将上述动物亲和生物活性玻璃与5%浓度的氢氧化钾水溶液按照5:1~5的比例配比后加热到60℃超声波处理;
第三步,然后多批次将分子筛添加入混合液中继续超声波处理6~24hrs,所述分子筛的添加总量为所述动物亲和生物活性玻璃的一半;
第四步,过滤溶液,使用去离子水对剩余固体超声清洗至少3次后除水干燥,得到生物活性玻璃负载的改性分子筛,其中干燥温度为100℃,干燥时间为2-3hrs。
2.根据权利要求1所述的能够快速生效的高亲和液体敷料,其特征在于,所述分子筛为沸石分子筛,所述分子筛的规格为粒径2-4um,标准孔径0.3-1纳米,静态水吸附比例≥20-30%。
3.根据权利要求1所述的能够快速生效的高亲和液体敷料,其特征在于,所述分子筛的孔径为0.3纳米,所述静态水吸附比例为25%。
5.根据权利要求1所述的能够快速生效的高亲和液体敷料,其特征在于,所述成膜剂为聚乙烯醇、结冷胶和出芽短梗酶多糖(INCI Name:Pullulan)中的一种或几种。
6.根据权利要求1所述的能够快速生效的高亲和液体敷料,其特征在于,所述止疼剂为冰片与薄荷脑中的一种或两种。
7.根据权利要求1所述的能够快速生效的高亲和液体敷料,其特征在于,所述钙、硅离子生物活性缓冲液的一种制备方法为:
第一步,选取钙元素≥12%,硅元素≥20%的,磷元素≥1.5%的生物活性玻璃经表面动物亲和处理后制成含有1-30纳米微孔的动物亲和生物活性玻璃粉末;
第二步,将上述动物亲和生物活性玻璃粉末放入去离子水在80℃下恒温浸泡72hrs,控制pH 值在10.2~11.8之间,检测浸出离子浓度,当浸出离子浓度≥5000ppm时为浸出终点;
第三步,提取浸出液,然后通过孔径为0.45微米的微孔过滤器过滤后即可得到相应的钙、硅离子生物活性缓冲液。
8.根据权利要求1所述的能够快速生效的高亲和液体敷料,其特征在于,所述钙、硅离子生物活性缓冲液的一种制备方法为:
第一步,选取钙元素≥12%,硅元素≥20%的,磷元素≥1.5%的生物活性玻璃经表面动物亲和处理后制成含有1-30纳米微孔的动物亲和生物活性玻璃粉末;
第二步,将上述动物亲和生物活性玻璃与5%浓度的氢氧化钾水溶液按照5:1~5的比例配比后加热到60℃超声波处理;
第三步,室温抽提固体的动物亲和生物活性玻璃粉末浸入3mol/L浓度的氯化钙中缓慢搅拌12Hrs,进行钙化改性;
第四步,将改性后的动物亲和生物活性玻璃粉末浸入去离子水内恒温浸泡72Hrs,控制pH 值在9.1~14.1之间,检测浸出离子浓度,当浸出离子浓度≥5000ppm时为浸出终点;
第五步,提取浸出液,然后通过孔径为0.45微米的微孔过滤器过滤后即可得到相应的钙、硅离子生物活性缓冲液。
9.根据权利要求1所述的能够快速生效的高亲和液体敷料,其特征在于,所述保湿剂为医用甘油与海藻糖按照5:1~25的比例复配的混合物。
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