CN105997915A - 一种高血压治疗用缓释片剂 - Google Patents
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Abstract
本发明公开了一种高血压治疗用缓释片,由治疗高血压的西药、载体材料、支撑材料以及粘接材料组成;所述载体材料为碳酸酯聚合物;所述支撑材料为陶瓷体;所述粘接材料为羟丙基纤维素醇溶液;所述陶瓷体由贝壳粉混合有机微球后烧结、球磨得到。本发明的高血压治疗用缓释片中,治疗高血压的西药、支撑材料以及粘接材料的质量百分数分别为3%~6%、6%~10%、1%~3%,其余为载体材料。载体装载西药,增加惰性西药与其他组分的相容性,支撑材料带有大量孔隙,埋孔、半孔都存在,可以作为药物存放处,几种组分通过粘接体系融合一体,形成稳定的体系,从而更好地控制药物的释放。
Description
技术领域
本发明涉及一种药物制剂,尤其涉及一种含有治疗成分的高血压治疗用缓释片。
背景技术
高血压病是指以静息、非药物状态下2次或2次以上非同日多次重复血压测定所得平均值作为依据,收缩压>140mmHg和(或)舒张压>90mm Hg,并排除继发因素的临床综合征。随着社会经济的不断发展和人们生活方式的改变,我国人群高血压患病率呈持续增长趋势,我国成人高血压患病率达18.8%,估计全国有高血压患者1.6亿。根据我国高血压防治指南可以发现,我国高血压的发病趋势具有“三高三低”的特点,即患病率、致残率、死亡率较高,而知晓率、服药率、控制率较低。因此,如何有效控制、治疗高血压已成为医学界普遍关注的焦点之一。
一般的抗高血压药物口服吸收迅速,大部分经胃肠道吸收。普通制剂在3.5小时达到峰值浓度,半衰期为9小时,作用时间为12小时,每日给药,又由于高血压患者需要长期用药,给患者及家属带来极大的不便及痛苦。缓释制剂系指在规定释放介质中,按要求缓慢地非恒速释放药物。缓释制剂具有如下优点:①药物释放缓慢,血药浓度“峰谷”波动小,使药物血药浓度波动所产生的毒副反应降低到最小;②对半衰期短的或需要频繁给药的药物,可以减少服药次数,从而提高病人的顺应性;③可减少用药的总剂量,用最小剂量达到最大药效。但是现有的高血压药物缓释体系不稳定,还存在不良反应,因此需要研发一种缓释片剂,延长药物的释放时间,同时还需要能够控制药物的释放,降低不良反应。
发明内容
本发明的目的在于提供一种高血压治疗用缓释片,延缓药物的释放速度,降低患者用药频率,降低峰谷现象,降低不良反应。
为达到上述发明目的,本发明的技术方案是:
一种高血压治疗用缓释片,由治疗高血压的西药、载体材料、支撑材料以及粘接材料组成;所述载体材料为碳酸酯聚合物;所述支撑材料为陶瓷体;所述粘接材料为羟丙基纤维素醇溶液;所述陶瓷体由贝壳粉混合有机微球后烧结、球磨得到。
本发明中,所述高血压治疗用缓释片中,治疗高血压的西药、支撑材料以及粘接材料的质量百分数分别为3%~6%、6%~10%、1%~3%,其余为载体材料。载体装载西药,增加惰性西药与其他组分的相容性,支撑材料带有大量孔隙,埋孔、半孔都存在,可以作为药物存放处,几种组分通过粘接体系融合一体,形成稳定的体系,从而更好地控制药物的释放。
本发明中,制备陶瓷体时,按质量比,贝壳粉∶有机微球为100∶4~5;烧结温度为850~900℃。先将贝壳粉、有机微球制成生坯;然后通过烧结去除微球形成微孔隙,球磨成粉,得到支撑材料。
本发明中,所述羟丙基纤维素醇溶液的质量浓度为10~15%;所述羟丙基纤维素醇溶液中,醇为丙二醇。
本发明中,所述碳酸酯聚合物由4-羟基丁酸内酯与丁二酸酐聚合得到;制备碳酸酯聚合物时,以有机锌化合物作为催化剂,以3-甲基-1-戊炔-3-醇作为引发剂;所述有机锌化合物为双(双三甲基硅基)胺锌。
本发明中,所述治疗高血压的西药为氢氯噻嗪、吲哒帕胺、呋塞米中的一种;本发明的缓释体系可以适用多种药物。
和现有技术相比,本发明的技术具有以下优点:
(1)本发明利用相容性甚好的碳酸酯聚合物作为药物的载体,增加药物与其他组分的相容性,使得药物大量分散在陶瓷支撑体中,增大药物的存储稳定性;同时在服用时,亲水性碳酸酯聚合物遇水以后经水合作用而膨胀,从而释放药物,此过程缓慢进行,有利于药物缓释。
(2)本发明将陶瓷体作为多孔支撑材料与聚合物混合使用,解决了一种载体存在的不能兼顾存储稳定以及缓释的缺点;通过控制各组分含量,能够更好的控制缓释片药物的释放,在缓慢释放药物的同时可以维持有效血药浓度,并保证药效持久。
具体实施方式
下面将通过实施例对本发明作进一步的描述。
制备例
先将质量比为100∶5的贝壳粉、有机微球制成生坯;然后900℃通过烧结去除微球形成微孔隙,球磨成粉,得到支撑材料A;先将质量比为100∶4的贝壳粉、有机微球制成生坯;然后850℃通过烧结去除微球形成微孔隙,球磨成粉,得到支撑材料B;先将质量比为100∶4.5的贝壳粉、有机微球制成生坯;然后900℃通过烧结去除微球形成微孔隙,球磨成粉,得到支撑材料C。
在氮气环境下,等摩尔的4-羟基丁酸内酯与丁二酸酐溶在5mL二氯甲烷中,搅拌后加入0.2mol%的3-甲基-1-戊炔-3-醇和0.001mol%的催化剂双(双三甲基硅基)胺锌的二氯甲烷溶液,密封于45℃反应1天,用冰乙酸终止反应,在冰乙醚中沉淀,过滤、真空干燥得到碳酸酯聚合物。
实施例一:高血压治疗用缓释片的制备
称取0.3g氢氯噻嗪,9g碳酸酯聚合物,按照等量递加法混合均匀,然后加入0.6g支撑材料A与0.1g质量浓度为12%的羟丙基纤维素丙二醇溶液,30目筛制粒,60℃干燥4h,24目筛整粒后,混匀,压片,完成。
实施例二:高血压治疗用缓释片的制备
称取0.3g氢氯噻嗪,9g碳酸酯聚合物,按照等量递加法混合均匀,然后加入0.6g支撑材料B与0.1g质量浓度为12%的羟丙基纤维素丙二醇溶液,30目筛制粒,60℃干燥4h,24目筛整粒后,混匀,压片,完成。
实施例三:高血压治疗用缓释片的制备
称取0.3g氢氯噻嗪,9g碳酸酯聚合物,按照等量递加法混合均匀,然后加入0.6g支撑材料C与0.1g质量浓度为12%的羟丙基纤维素丙二醇溶液,30目筛制粒,60℃干燥4h,24目筛整粒后,混匀,压片,完成。
实施例四:高血压治疗用缓释片的制备
称取0.3g吲哒帕胺,9g碳酸酯聚合物,按照等量递加法混合均匀,然后加入0.6g支撑材料A与0.1g质量浓度为12%的羟丙基纤维素丙二醇溶液,30目筛制粒,60℃干燥4h,24目筛整粒后,混匀,压片,完成。
实施例五:高血压治疗用缓释片的制备
称取0.3g呋塞米,9g碳酸酯聚合物,按照等量递加法混合均匀,然后加入0.6g支撑材料A与0.1g质量浓度为12%的羟丙基纤维素丙二醇溶液,30目筛制粒,60℃干燥4h,24目筛整粒后,混匀,压片,完成。
实施例六:高血压治疗用缓释片的制备
称取0.6g氢氯噻嗪,8.1g碳酸酯聚合物,按照等量递加法混合均匀,然后加入1g支撑材料A与0.3g质量浓度为12%的羟丙基纤维素丙二醇溶液,30目筛制粒,60℃干燥4h,24目筛整粒后,混匀,压片,完成。
实施例七:高血压治疗用缓释片的制备
称取0.6g氢氯噻嗪,8.1g碳酸酯聚合物,按照等量递加法混合均匀,然后加入1g支撑材料C与0.3g质量浓度为12%的羟丙基纤维素丙二醇溶液,30目筛制粒,60℃干燥4h,24目筛整粒后,混匀,压片,完成。
实施例八:高血压治疗用缓释片的制备
称取0.6g氢氯噻嗪,8.1g碳酸酯聚合物,按照等量递加法混合均匀,然后加入1g支撑材料A与0.3g质量浓度为10%的羟丙基纤维素丙二醇溶液,30目筛制粒,60℃干燥4h,24目筛整粒后,混匀,压片,完成。
实施例九:高血压治疗用缓释片的制备
称取0.6g氢氯噻嗪,8.1g碳酸酯聚合物,按照等量递加法混合均匀,然后加入1g支撑材料A与0.3g质量浓度为15%的羟丙基纤维素丙二醇溶液,30目筛制粒,60℃干燥4h,24目筛整粒后,混匀,压片,完成。
实施例十:高血压治疗用缓释片的制备
称取0.5g氢氯噻嗪,8.5g碳酸酯聚合物,按照等量递加法混合均匀,然后加入0.8g支撑材料A与0.2g质量浓度为12%的羟丙基纤维素丙二醇溶液,30目筛制粒,60℃干燥4h,24目筛整粒后,混匀,压片,完成。
实施例十一:高血压治疗用缓释片的制备
称取0.5g氢氯噻嗪,8.5g碳酸酯聚合物,按照等量递加法混合均匀,然后加入0.8g支撑材料B与0.2g质量浓度为12%的羟丙基纤维素丙二醇溶液,30目筛制粒,60℃干燥4h,24目筛整粒后,混匀,压片,完成。
本实施例中高血压治疗用缓释片释放度测定方法:
取制备的高血压治疗用缓释片,参照中国药典2010年版二部附录XD释放度测定第一法,依法操作,于1,2,4,8,12,24h分别取样2mL,同时补加等量释放液,并立即离心,取上清液,进行HPLC分析,计算药物的累计释放量。表1为上述制备的高血压治疗用缓释片的释放结果,说明本发明的高血压治疗用缓释片可以控制药物的释放,同时高血压治疗用缓释片制备方便,有利于高血压治疗用缓释片的应用。
表1高血压治疗用缓释片的释放结果
Claims (10)
1.一种高血压治疗用缓释片,由治疗高血压的西药、载体材料、支撑材料以及粘接材料组成;所述载体材料为碳酸酯聚合物;所述支撑材料为陶瓷体;所述粘接材料为羟丙基纤维素醇溶液;所述陶瓷体由贝壳粉混合有机微球后烧结、球磨得到。
2.根据权利要求1所述高血压治疗用缓释片,其特征在于:所述高血压治疗用缓释片中,治疗高血压的西药、支撑材料以及粘接材料的质量百分数分别为3%~6%、6%~10%、1%~3%,其余为载体材料。
3.根据权利要求1所述高血压治疗用缓释片,其特征在于:按质量比,贝壳粉∶有机微球为100∶4~5。
4.根据权利要求1所述高血压治疗用缓释片,其特征在于:制备陶瓷体时,烧结温度为850~900℃。
5.根据权利要求1所述高血压治疗用缓释片,其特征在于:所述羟丙基纤维素醇溶液的质量浓度为10~15%。
6.根据权利要求1所述高血压治疗用缓释片,其特征在于:所述羟丙基纤维素醇溶液中,醇为丙二醇。
7.根据权利要求1所述高血压治疗用缓释片,其特征在于:所述碳酸酯聚合物由4-羟基丁酸内酯与丁二酸酐聚合得到。
8.根据权利要求7所述高血压治疗用缓释片,其特征在于:制备碳酸酯聚合物时,以有机锌化合物作为催化剂,以3-甲基-1-戊炔-3-醇作为引发剂。
9.根据权利要求8所述高血压治疗用缓释片,其特征在于:所述有机锌化合物为双(双三甲基硅基)胺锌。
10.根据权利要求1所述高血压治疗用缓释片,其特征在于:所述治疗高血压的西药为氢氯噻嗪、吲哒帕胺、呋塞米中的一种。
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