CN113908326A - 一种用于皮肤创伤修复的医用粘合剂及其使用方法 - Google Patents
一种用于皮肤创伤修复的医用粘合剂及其使用方法 Download PDFInfo
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- A61L24/04—Surgical adhesives or cements; Adhesives for colostomy devices containing macromolecular materials
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Abstract
本发明公开了一种用于皮肤创伤修复的医用粘合剂及其使用方法,包含A、B组分,A组分为基于聚乙二醇和小分子多元醇的聚氨酯预聚物,B组分为改性仲胺固化剂;A组分由以下方式获得:将聚乙二醇即PEG与二异氰酸酯即DI反应得到中间体,并通过加入小分子多元醇扩链剂获得聚氨酯预聚物;B组分由以下方式获得:将二伯胺与α,β‑不饱和羰基化合物按官能团摩尔比‑NH2:‑C=C=1.2:1,在0.1%质量分数的过渡金属催化条件下反应,随后通过柱层析分离获得改性仲胺固化剂。本发明制得的医用粘合剂无生物毒性、韧性好、粘合强度高,适用于临床皮肤创口的封堵和修复。
Description
技术领域
本发明涉及三类医疗器械的技术领域,尤其是指一种用于皮肤创伤修复的医用粘合剂及其使用方法。
背景技术
现有骨缺损的修复手段:钢钉钢板、聚甲基丙烯酸甲酯(PMMA)骨水泥、磷酸钙(CPC)骨水泥等。钢钉钢板强度高但是可能存在接触点应力集中或感染,且对小段或粉碎性骨折难以适用;PMMA骨水泥作为永久性骨填充物存在生物毒性、发热,CPC骨水泥生物相容性良好且可降解,然而这两类有机或无机骨水泥的骨粘合强度较弱,一般只能当成填充物使用。
发明内容
本发明的目的在于克服现有技术的缺点与不足,提出了一种用于皮肤创伤修复的医用粘合剂及其使用方法,该医用粘合剂的生物安全性好、韧性好、粘合强度高,适用于临床皮肤创口的封堵和修复。
为实现上述目的,本发明所提供的技术方案为:一种用于皮肤创伤修复的医用粘合剂,包含A、B组分,A组分为基于聚乙二醇和小分子多元醇的聚氨酯预聚物,B组分为改性仲胺固化剂;
A组分由以下方式获得:将聚乙二醇即PEG与二异氰酸酯即DI反应得到中间体,并通过加入小分子多元醇扩链剂获得聚氨酯预聚物;其中,所述中间体中DI的-NCO官能团摩尔量:PEG的-OH官能团摩尔量=1.8~2.5:1.0;所述聚氨酯预聚物中DI的-NCO官能团摩尔量:PEG的-OH官能团摩尔量=1.3~1.8:1.0;
B组分由以下方式获得:将二伯胺与α,β-不饱和羰基化合物按官能团摩尔比-NH2:-C=C=1.2:1,在0.1%质量分数的过渡金属催化条件下反应,随后通过柱层析分离获得改性仲胺固化剂。
进一步,所述PEG由PEG400、PEG600、PEG800、PEG1000中的一种或几种组成;所述DI由L-赖氨酸二异氰酸酯、异佛尔酮二异氰酸酯、双亚甲基双 (异氰酸苯酯)中的一种或几种组成;所述小分子多元醇扩链剂由丙三醇、季戊四醇、葡萄糖中的一种或几种组成。
进一步,所述二伯胺由1,5-戊二胺、1,6-己二胺、N'N-双(3-氨丙基)甲胺、对苯二甲胺、对苯二胺、4,4′-双(4-氨苯氧基)联苯、联苯二甲胺中的一种或几种组成;所述α,β-不饱和羰基化合物由丙烯酸甲酯、丙烯酸丁酯、马来酸二乙酯中的一种或几种组成;所述过渡金属由硝酸铈铵、硝酸钇、氯化钴、氯化铁中的一种或几种组成。
进一步,待用的聚氨酯预聚物中添加微量稳定剂。
进一步,所述稳定剂由磷酸、苯甲酰氯中的一种或几种组成。
本发明也提供了上述医用粘合剂的使用方法,使用时,将A、B组分按官能团摩尔量之比(-NCO:-NH)=1:1通过双腔注射器混合,涂覆到创伤组织表面即可。
进一步,所述双腔注射器包含两个不同内径的腔体、推进杆与混料嘴,使用时将A、B组分分装于两腔体,然后通过推进杆由混料嘴推出至目标部位,A 组分中的-NCO官能团与B组分中-NH反应交联固化,产生氨基甲酸酯键、脲键,最终通过氨基甲酸酯键、脲键与人体组织中活性氢形成氢键作用实现皮肤组织间的粘合。
本发明与现有技术相比,具有如下优点与有益效果:
通过本发明能够得到一种生物相容性好,实施舒适便利,韧性好且对皮肤组织具有强粘合强度的医用粘合剂,能有效实现外科手中皮肤创伤的粘合,具有临床应用价值。
具体实施方式
下面结合实施例对本发明作进一步详细的描述,但本发明的实施方式不限于此。
实施例1
第一步,聚氨酯预聚物的制备:在加热、搅拌、封闭容器内依此加入3.57gL- 赖氨酸二异氰酸酯(95%,15mmol)、2.25异佛尔酮二异氰酸酯(99%,10mmol) 和10.1gPEG1000(99.9%,10mmol),反应一定时间使得-OH被完全消耗;随后加入0.518g丙三醇(99.9%,5.57mmol)反应一定时间使得-OH被完全消耗,过滤杂质得到聚氨酯预聚物(A组分),往其中添加微量磷酸作为稳定剂。
第二步,改性仲胺固化剂制备:在搅拌、封闭容器内依次加入0.825g对苯二甲胺(99%,6mmol)和0.85g丙烯酸甲酯(99%,10mmol),然后往其中加入0.1%质量分数的硝酸钇,反应24小时后,通过柱层析分离将产物进一步提纯得到改性仲胺固化剂(B组分)。
使用时,将A、B组分按官能团摩尔量之比(-NCO:-NH)=1:1通过双腔注射器混合,所述双腔注射器包含两个不同内径的腔体、推进杆与混料嘴,使用时将A、B组分分装于两腔体,然后通过推进杆由混料嘴推出至目标部位,A 组分中的-NCO官能团与B组分中-NH反应交联固化,产生氨基甲酸酯键、脲键,最终通过氨基甲酸酯键、脲键与人体组织中活性氢形成氢键作用实现骨组织间的粘合;其中,3-5min内完成固化,可获得良好的粘合效果。
实施例2
第一步,聚氨酯预聚物的制备:在加热、搅拌、封闭容器内依此加入2.38gL- 赖氨酸二异氰酸酯(95%,10mmol)、2.01g双亚甲基双(异氰酸苯酯)(99.5%,8mmol)和5.05gPEG1000(99.9%,5mmol)、2.02gPEG400(99.9%,5mmol),反应一定时间使得-OH被完全消耗;随后加入0.381g丙三醇(99.9%,4.1mmol) 反应一定时间使得-OH被完全消耗,过滤杂质得到聚氨酯预聚物(A组分),往其中添加微量苯甲酰氯作为稳定剂。
第二步,改性仲胺固化剂制备:在搅拌、封闭容器内依次加入0.63g1,5-戊二胺(98%,6mmol)和1.74g马来酸二乙酯(99%,10mmol),然后往其中加入0.1%质量分数的硝酸铈铵,反应24小时后,通过柱层析分离将产物进一步提纯得到改性仲胺固化剂(B组分)。
使用时,将A、B组分按官能团摩尔量之比(-NCO:-NH)=1:1通过双腔注射器混合,所述双腔注射器包含两个不同内径的腔体、推进杆与混料嘴,使用时将A、B组分分装于两腔体,然后通过推进杆由混料嘴推出至目标部位,A 组分中的-NCO官能团与B组分中-NH反应交联固化,产生氨基甲酸酯键、脲键,最终通过氨基甲酸酯键、脲键与人体组织中活性氢形成氢键作用实现骨组织间的粘合;其中,3-5min内完成固化,可获得良好的粘合效果。
实施例3
第一步,聚氨酯预聚物的制备:在加热、搅拌、封闭容器内依此加入2.38gL- 赖氨酸二异氰酸酯(95%,10mmol)、2.245g异佛尔酮二异氰酸酯(99%,10mmol) 和6.06gPEG600(99.9%,10mmol),反应一定时间使得-OH被完全消耗;随后加入0.485g葡萄糖(99.9%,2.67mmol)反应一定时间使得-OH被完全消耗,过滤杂质得到聚氨酯预聚物(A组分),往其中添加微量磷酸作为稳定剂。
第二步,改性仲胺固化剂制备:在搅拌、封闭容器内依次加入0.89gN'N-双 (3-氨丙基)甲胺(98%,6mmol)和1.74g马来酸二乙酯(99%,10mmol),然后往其中加入0.1%质量分数的硝酸铈铵,反应24小时后,通过柱层析分离将产物进一步提纯得到改性仲胺固化剂(B组分)。
使用时,将A、B组分按官能团摩尔量之比(-NCO:-NH)=1:1通过双腔注射器混合,所述双腔注射器包含两个不同内径的腔体、推进杆与混料嘴,使用时将A、B组分分装于两腔体,然后通过推进杆由混料嘴推出至目标部位,A 组分中的-NCO官能团与B组分中-NH反应交联固化,产生氨基甲酸酯键、脲键,最终通过氨基甲酸酯键、脲键与人体组织中活性氢形成氢键作用实现骨组织间的粘合;其中,3~5min完成固化,可获得良好的粘合效果。
实施例4
第一步,聚氨酯预聚物的制备:在加热、搅拌、封闭容器内依此加入3.01g 双亚甲基双(异氰酸苯酯)(99.5%,12mmol)、2.38gL-赖氨酸二异氰酸酯(95%, 10mmol)和8.08gPEG800(99.9%,10mmol),反应一定时间使得-OH被完全消耗;随后加入0.138g季戊四醇(99%,1mmol)反应一定时间使得-OH被完全消耗,过滤杂质得到聚氨酯预聚物(A组分),往其中添加微量苯甲酰氯作为稳定剂。
第二步,改性仲胺固化剂制备:在搅拌、封闭容器内依次加入0.89gN'N-双 (3-氨丙基)甲胺(98%,6mmol)和1.74g马来酸二乙酯(99%,10mmol),然后往其中加入0.1%质量分数的硝酸铈铵,反应24小时后,通过柱层析分离将产物进一步提纯得到改性仲胺固化剂(B组分)。
使用时,将A、B组分按官能团摩尔量之比(-NCO:-NH)=1:1通过双腔注射器混合,所述双腔注射器包含两个不同内径的腔体、推进杆与混料嘴,使用时将A、B组分分装于两腔体,然后通过推进杆由混料嘴推出至目标部位,A 组分中的-NCO官能团与B组分中-NH反应交联固化,产生氨基甲酸酯键、脲键,最终通过氨基甲酸酯键、脲键与人体组织中活性氢形成氢键作用实现骨组织间的粘合;其中,3~5min内完成固化,可获得良好的粘合效果。
上述实施例为本发明较佳的实施方式,但本发明的实施方式并不受上述实施例的限制,其他的任何未背离本发明的精神实质与原理下所作的改变、修饰、替代、组合、简化,均应为等效的置换方式,都包含在本发明的保护范围之内。
Claims (7)
1.一种用于皮肤创伤修复的医用粘合剂,其特征在于:包含A、B组分,A组分为基于聚乙二醇和小分子多元醇的聚氨酯预聚物,B组分为改性仲胺固化剂;
A组分由以下方式获得:将聚乙二醇即PEG与二异氰酸酯即DI反应得到中间体,并通过加入小分子多元醇扩链剂获得聚氨酯预聚物;其中,所述中间体中DI的-NCO官能团摩尔量:PEG的-OH官能团摩尔量=1.8~2.5:1.0;所述聚氨酯预聚物中DI的-NCO官能团摩尔量:PEG的-OH官能团摩尔量=1.3~1.8:1.0;
B组分由以下方式获得:将二伯胺与α,β-不饱和羰基化合物按官能团摩尔比-NH2:-C=C=1.2:1,在0.1%质量分数的过渡金属催化条件下反应,随后通过柱层析分离获得改性仲胺固化剂。
2.根据权利要求1所述的一种用于皮肤创伤修复的医用粘合剂,其特征在于:所述PEG由PEG400、PEG600、PEG800、PEG1000中的一种或几种组成;所述DI由L-赖氨酸二异氰酸酯、异佛尔酮二异氰酸酯、双亚甲基双(异氰酸苯酯)中的一种或几种组成;所述小分子多元醇扩链剂由丙三醇、季戊四醇、葡萄糖中的一种或几种组成。
3.根据权利要求1所述的一种用于皮肤创伤修复的医用粘合剂,其特征在于:所述二伯胺由1,5-戊二胺、1,6-己二胺、N'N-双(3-氨丙基)甲胺、对苯二甲胺、对苯二胺、4,4′-双(4-氨苯氧基)联苯、联苯二甲胺中的一种或几种组成;所述α,β-不饱和羰基化合物由丙烯酸甲酯、丙烯酸丁酯、马来酸二乙酯中的一种或几种组成;所述过渡金属由硝酸铈铵、硝酸钇、氯化钴、氯化铁中的一种或几种组成。
4.根据权利要求1所述的一种用于皮肤创伤修复的医用粘合剂,其特征在于:待用的聚氨酯预聚物中添加微量稳定剂。
5.根据权利要求4所述的一种用于皮肤创伤修复的医用粘合剂,其特征在于:所述稳定剂由磷酸、苯甲酰氯中的一种或几种组成。
6.一种权利要求1-5任意一项所述的用于皮肤创伤修复的医用粘合剂的使用方法,其特征在于:使用时,将A、B组分按官能团摩尔量之比(-NCO:-NH)=1:1通过双腔注射器混合,涂覆到创伤组织表面即可。
7.根据权利要求6所述的一种用于皮肤创伤修复的医用粘合剂的使用方法,其特征在于:所述双腔注射器包含两个不同内径的腔体、推进杆与混料嘴,使用时将A、B组分分装于两腔体,然后通过推进杆由混料嘴推出至目标部位,A组分中的-NCO官能团与B组分中-NH反应交联固化,产生氨基甲酸酯键、脲键,最终通过氨基甲酸酯键、脲键与人体组织中活性氢形成氢键作用实现皮肤组织间的粘合。
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