CN103781499A - 轻质网的可逆硬化 - Google Patents
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Abstract
公开了一种植入体和用于制备这种植入体的方法。该植入体包括含有玻璃化转变温度为约26℃至约36℃的可生物降解的聚合涂层的网。该聚合涂层含有包括内酯的第一聚合组分和包括聚醚的第二聚合组分。所述第一聚合组分以聚合涂层重量的约90%至约99%的量存在,且第二聚合组分以聚合涂层重量的约1%至约10%的量存在。
Description
技术领域
本公开涉及涂布的植入体。更具体地,本公开涉及包括聚合涂层的外科手术网,该涂层使所述网硬化以用于处理,并在置于身体内之后软化。
背景技术
用于修复损伤的或者病变的组织的技术广泛存在于医学中。经常使用伤口闭合装置,例如缝合线和吻合钉(staples)以及其他的修复装置例如网或修补增强体以用于修复。
有一种趋势是降低例如疝网重量和刚性以作为减少术后并发症和疼痛的手段。轻量化的网具有柔软和易弯曲的性质,其可随组织的运动适应并弯曲。然而,网重量的降低可能使其在植入期间尤其是在潮湿的环境中难以使用、处理和展开该网。网中的扭结和褶皱是不可接受的,因为其可能会产生容许血清肿和瘘管扩展的死隙,且其可能受到感染,造成植入失败并可能引起病症复发。
涂层已施用于医疗装置中,来赋予光滑性和/或抗粘着性,并作为用于生物活性剂释放的贮存处。然而,该涂层不能提高网的操作特性。
因此,仍需要用于网的改良涂层。
发明内容
因此,描述了包括至少一种包含可生物降解的聚合涂层的外科手术网的植入体。该可生物降解的聚合涂层可以含有:包括占聚合涂层重量的约90%至约99%的内酯的第一聚合组分,以及包括占聚合涂层重量的约1%至约10%的聚醚的第二聚合组分。
在实施方式中,可生物降解的聚合涂层可以具有约26℃至约36℃的玻璃化转变温度。在实施方式中,可生物降解的聚合涂层具有约30℃至约35℃的玻璃化转变温度。
在实施方式中,所述第一聚合组分选自乙交酯、丙交酯、对二噁烷酮、ε-己内酯、三亚甲基己内酯、原酸酯、磷酸酯、共聚物及其混合物。第一聚合组分可以是乙交酯和丙交酯的共聚物。乙交酯可以以共聚物重量的约10%至约50%的量存在,且丙交酯可以以共聚物重量的约50%至约90%的量存在。乙交酯可以以共聚物重量的约15%至约40%的量存在,丙交酯可以以共聚物重量的约60%至约85%的量存在。第二聚合组分可以选自烷基取代的氧化乙烯、聚氧化烯、亚烷基二醇、聚乙二醇、聚四亚甲基醚二醇以及它们的组合。例如,第二聚合组分为聚乙二醇。在实施方式中,所述聚乙二醇的分子量为约200g/mol至约1000g/mol。在实施方式中,聚乙二醇的分子量为约600g/mol至约900g/mol。
所述聚醚可以是聚乙二醇的脂肪酸二酯。
在实施方式中,所述聚合涂层包含约95%至约99%重量份的第一聚合组分和约1%至约5%重量份的第二聚合组分。所述聚合涂层可包含约97%至约99%重量份的第一聚合组分和约1%至约3%重量份的第二种聚合组分。
在实施方式中,所述网进一步包括生物活性剂。
进一步描述了一种用于涂覆外科手术网的方法,包括:
通过在溶剂中溶解含有内酯的第一聚合组分和含有聚醚的第二聚合组分来制备溶液;
用所述溶液涂覆外科手术网来形成涂覆的外科手术网;以及
干燥该涂覆的外科手术网,
其中,所述聚合涂层具有约26℃至约36℃的玻璃化转变温度。
所述第一聚合组分可以选自乙交酯、丙交酯、对二噁烷酮、ε-己内酯、三亚甲基己内酯、原酸酯、磷酸酯、共聚物及其混合物。所述第二聚合组分可以选自聚醚、烷基取代的氧化乙烯、聚氧化烯、亚烷基二醇、聚四亚甲基醚二醇以及它们的组合。所述溶剂可以选自六氟异丙醇、丙酮、乙二醇乙酸酯、异丙醇、二氯甲烷、氯仿、四氢呋喃、二甲基甲酰胺、N-甲基吡咯烷酮以及它们的组合。
在实施方式中,所述外科手术网是通过选自喷涂、超声喷涂、电喷涂、浸涂、溶剂蒸发以及它们的组合的方法来涂覆的。
附图说明
图1-12示出了根据本公开的实施例1的聚合物混合物的差示扫描量热法(DSC)曲线;
图13-16示出了根据本公开的实施例2的聚合物混合物的DSC曲线;
图17-19示出了根据本公开的实施例3的聚合物混合物的DSC曲线;
图20-25示出了根据本公开的实施例4的聚合物混合物的DSC曲线;以及
图26-31示出了根据本公开的实施例5的聚合物混合物的DSC曲线。
具体实施方式
根据本公开的外科手术网是由赋予植入体主要结构的织物制造。外科手术网包括具有玻璃化转变温度高于室温(即高于约25℃)但低于体温(即低于约37℃)的聚合涂层。在室温下,该涂层使该网硬化以便于处理和操作,并且对于在体内放置,随着温度上升到聚合涂层的玻璃化转变温度以上,涂层会软化,从而使网柔软以便其适应组织表面。
所述外科手术网适于疝的外科手术修复和其他需要加固或软组织修复的外科手术,例如肌肉或壁组织缺损、盆腔器官脱垂和小便失禁。本公开的网可以是片,补片、吊索、吊带和其他植入体以及例如拭子、支撑件、伤口敷料、药物输送装置等复合材料的形式。该外科手术网可以使用开放性手术或腹腔镜手术来植入。
根据本公开的外科手术网可以由任何合适的生物相容性材料制成的单丝和/或复丝纱线来制造。可以制成该网的合适的材料应具有以下特征:足够的抗张强度以支持组织;足够的惰性,以避免在体内长时间保持时的异物反应;易于消毒,以防止在体内植入网时引入感染;以及足够的强度,以避免其部分撕裂,该部分包括通过其可以施加外科手术紧固件来将网固定到组织的任何部分。
在一些实施方式中,纱线包括至少两条设置成在它们之间产生开口的细丝,该纱线还设置成彼此相对以形成网眼。可替代地,该网可以由设置成产生网眼的环形的连续纱线形成。利用根据本公开的具有分隔开的纱线的网的优点在于,减少植入到体内的异物量,同时保持足够的拉伸强度以安全地支持正在由网修复的缺陷和组织。此外,本公开的网的开口的可以按尺寸形成以允许成纤维细胞穿越生长和胶原有序沉积,从而将网融合到体内。因此,根据外科手术应用和期望的植入物的特性,纱线之间的间距可由本领域技术人员所预见而不同。此外,由于可能需要修复的缺陷尺寸以及各种筋膜的不同,该网可以是任何合适的尺寸。
在至少两条细丝形成纱线的实施方式中,细丝可以拉伸、定向、皱折、扭曲、编织、混合或喷气交缠而形成纱线。所得到的纱线可以编织、扭曲、取向、熔合或以其它方式接合,以形成各种不同的网形状。纱线可以花纹编织、针织、交织、编织或者通过非织造技术形成外科手术网。根据用于形成网的组装技术和其他因素,例如使用的纤维的类型、该纱线保持的张力和网所要求的机械性能,网的结构将会不同。
在实施方式中,针织可以用于形成本公开的网。在实施方式中,针织涉及纱线的交织,以形成纱线的环或交叉环。在实施方式中,纱线可以是经线编织,从而产生垂直联锁环链,和/或纱线可以是纬线编织,从而产生跨越网的联锁环线圈的行。在其它实施方式中,花纹编织可以用于形成本公开的网。在实施方式中,花纹编织可以包括两组直纱线即经纱和纬纱的交汇,其彼此交叉和交织成直角,或者两条纱线相互交错为直角。在一些实施方式中,纱线可以设置形成具有各向同性或接近各向同性的拉伸强度和弹性的网纹。
在实施方式中,纱线可以是非织造的,和通过机械的、化学的或热的方法将纱线粘合到一个随机或有序排列的片或网上来形成。例如,纱线可以通过缠绕纱线而机械连接来形成网,而不是针织或花纹编织,例如缠结、挤压、针脚式接合、针刺或以其它方式联锁纱线来形成无粘合剂的网状物。在其他实施方式中,网的纱线可以通过使用例如热熔性粘合剂等粘合剂来化学粘合,或者通过施加例如粉状、糊状或熔化的粘合剂以及在纱线的板片或网上熔化粘合剂来热粘合。
纱线可以由可在外科手术中使用的任何可生物降解的和/或不可生物降解的聚合物来制造。如本文所用的术语“生物可降解的”定义为包括生物可吸收的和生物可再吸收的材料。对于生物可降解的,它是指该材料在身体条件下分解或丧失结构完整性(例如,酶促降解或水解),或在体内生理条件下被分解(物理的或化学的),使得降解产物被排出或由身体吸收。可吸收的材料被生物组织吸收而在给定的期间结束时在体内消失,该期间可以变化,例如,根据材料的化学性质,从几个小时到几个月。应当理解,所述材料包括天然的、合成的、生物可吸收的和/或某些非吸收性材料以及它们的结合。
可用于形成纱线的典型的可生物降解的天然聚合物包括:多糖,例如藻酸盐、葡聚糖、甲壳质、壳聚糖、透明质酸、纤维素、胶原、明胶、墨角藻多糖、糖胺聚糖及其化学衍生物(化学基团的取代和/或添加,该化学基团包括例如烷基、烯基、胺、硫酸根,羟基化、羧基化、氧化以及本领域技术人员常规进行的其他修饰);肠线;丝;亚麻线;棉线;和蛋白质,例如白蛋白、酪蛋白、玉米醇溶蛋白、丝、大豆蛋白;及其结合,例如单独的或与合成聚合物结合的它们的共聚物和混合物。
可用于形成纱线的经过合成修饰的天然聚合物包括:纤维素衍生物,例如烷基纤维素,羟烷基纤维素、纤维素醚、纤维素酯、硝化纤维素和壳多糖。合适的纤维素衍生物的实例包括甲基纤维素、乙基纤维素、羟丙基纤维素、羟丙基甲基纤维素、羟丁基甲基纤维素、乙酸纤维素、丙酸纤维素、乙酸丁酸纤维素、乙酸邻苯二甲酸纤维素、羧甲基纤维素、三乙酸纤维素、硫酸纤维素钠及其组合。
可用于形成纱线的典型的可生物降解的合成聚合物包括:由内酯单体(例如乙交酯、丙交酯、己内酯、ε-己内酯、戊内酯和δ-戊内酯等)、碳酸酯(例如三亚甲基碳酸酯、四亚甲基碳酸酯等)、二噁烷酮(例如1,4-二噁烷酮和对二噁烷酮)、二氧杂环庚烷酮(例如1,4-二氧杂环庚烷-2-酮和1,5-二氧杂环庚烷-2-酮)以及它们的组合制备的聚羟基酸。由其形成的聚合物包括:聚丙交酯;聚(乳酸);聚乙交酯;聚(乙醇酸);聚(三亚甲基碳酸酯);聚(二噁烷酮);聚(羟基丁酸);聚(羟基戊酸);聚(丙交酯-共-(ε-己内酯-));聚(乙交酯-共-(ε-己内酯));聚碳酸酯;聚(伪氨基酸);聚(氨基酸);聚(羟基链烷酸酯),例如聚羟基丁酸酯、聚羟基戊酸酯、聚(3-羟基丁酸酯-共-3-羟基戊酸酯)、聚羟基辛酸酯和聚羟基己酸酯;聚亚烷基草酸酯;聚氧杂酯;聚酐;聚酯酸酐;聚原酸酯;以及共聚物、嵌段共聚物、均聚物、混合物及其组合。
合成的可降解聚合物还包括亲水性乙烯基聚合物,扩大到包括磷酰胆碱,例如2-甲基丙烯酰氧基乙基磷酰胆碱、氧肟酸盐、乙烯基呋喃酮及它们的共聚物,和季铵;以及与其它聚合物例如内酯、原酸酯和羟基丁酸酯结合的各种氧化烯共聚物。
还可以使用可快速生物蚀解的聚合物,例如聚(丙交酯-共-乙交酯)、聚酐和聚原酸酯,其具有暴露于外表面的羧基作为聚合物侵蚀的表面。
其它可生物降解的聚合物包括聚磷腈;聚丙烯富马酸酯;聚酰亚胺;聚合物药物,例如聚胺;全氟代烷氧基聚合物;氟代乙烯/丙烯共聚物;PEG-内酯共聚物;PEG-聚原酸酯共聚物;它们的混合和组合。
可以制造网的合适的不可降解材料的一些非限制性实例包括聚烯烃,例如聚乙烯(包括超高分子量聚乙烯)和聚丙烯,包括无规立构的、全同立构的、间同立构的以及它们的混合;聚乙二醇;聚氧化乙烯;聚异丁烯和乙烯-α-烯烃共聚物;氟代聚烯烃,例如氟代乙烯、氟代丙烯、氟代PEGS和聚四氟乙烯;聚酰胺,例如尼龙、尼龙6、尼龙6,6、尼龙6,10、尼龙11、尼龙12和聚己内酰胺;聚胺;聚亚胺;聚酯,例如聚对苯二甲酸乙二醇酯、聚萘二甲酸乙二醇酯、聚对苯二甲酸丙二醇酯和聚对苯二甲酸丁二醇酯;聚醚;聚丁烯酯;聚四亚甲基醚乙二醇,1,4-丁二醇;聚氨酯;丙烯酸系聚合物;甲基丙稀酸;卤代乙烯聚合物,例如聚氯乙烯;聚乙烯醇;聚乙烯醚,例如聚乙烯基甲基醚;聚偏卤代乙烯,例如聚偏二氟乙烯和聚偏二氯乙烯;聚氯氟乙烯;聚丙烯腈;聚芳醚酮;聚乙烯酮;聚乙烯基芳族化合物,例如聚苯乙烯;聚乙烯基酯,例如聚乙酸乙烯酯;乙烯-甲基丙烯酸甲酯共聚物;丙烯腈-苯乙烯共聚物;ABS树脂;乙烯-乙酸乙烯酯共聚物;醇酸树脂;聚碳酸酯;聚甲醛;聚膦腈(polyphosphazine);聚酰亚胺;环氧树脂;芳族聚酰胺;人造纤维;人造纤维-三乙酸酯;氨纶(spandex);聚硅氧烷;以及它们的共聚物和组合。
网可以是复合层,包括如上所述的纤维层以及多孔和/或无孔的纤维、泡沫和/或薄膜层。无孔层可延缓或防止组织从外围组织向内生长,从而作为粘连屏障并防止不必要的疤痕组织形成。在实施方式中,加固部件可以被包括在复合网中。例如,合适的网包括胶原复合网,例如PARIETEXTM(Tyco HealthcareGroup LP,d/b/a Covidien,North Haven,CT)。PARIETEXTM复合网是可再吸收的胶原膜结合在一侧的三维聚酯花纹编织物。其它可以应用的网的实例包括在美国专利第6,596,002号、第6,408,656号、第7,021,086号、第6,971,252号、第6,695,855号、第6,451,032号、第6,443,964号、第6,478,727号、第6,391,060号和美国专利申请公开号第2007/0032805号公开的那些内容,其各自公开的全部内容都通过引用并入本发明中。
如上所述,用具有约26℃至约36℃玻璃化转变温度的聚合涂层涂覆外科手术网以覆盖所述外科手术网表面的至少一部分。在实施方式中,所述涂层的玻璃化转变温度为约30℃至约35℃。所述聚合涂层可以由可生物降解的聚合物例如上述的聚合物形成。在实施方式中,可以用作按照本公开的聚合涂层的组分的合适材料包括具有乙交酯、丙交酯、对二噁烷酮、ε-己内酯、三亚甲基己内酯、原酸酯、磷酸酯以及上述各种组分的组合的均聚物、共聚物和/或混合物。形成这些共聚物的方法在本领域技术人员的能力范围内,例如包括在美国专利第4,300,565号和第5,324,307号中公开的方法,其中每个专利的公开的全部内容通过引用的方式并入本发明中。
在实施方式中,可以使用基于乙交酯和丙交酯的聚酯,尤其是乙交酯和丙交酯的共聚物。合适的丙交酯和乙交酯的共聚物可以具有占共聚物重量的约50%至约90%的丙交酯,在实施方式中,占共聚物重量的约60%至约85%,乙交酯占共聚物的重量为约10%至约50%,在实施方式中,占共聚物重量的约15%至约40%。
在实施方式中,例如上面所描述的用于涂覆的可生物降解的聚合物或共聚物,可以与增塑剂、稀释剂或者其它聚合物或添加剂混合,以形成本公开的聚合涂层。在实施方式中,聚合物涂层的附加组分可以包括聚醚,如烯基氧化物,包括氧化乙烯和氧化丙烯;烷基取代的氧化乙烯,例如乙基、丙基和丁基取代的氧化乙烯;聚烯基氧化物,例如聚氧化乙烯(“PEO”)、聚氧化丙烯(“PPO”)、聚氧化乙烯-共-聚氧化丙烯(“PEO-PPO”)、的嵌段或无规共聚物;烯基二醇,包括乙二醇和聚乙二醇(“PEG”);聚四亚甲基醚乙二醇,它们的组合等。在实施方式中,可以使用具有约200至约1,000g/mol重均分子量的PEG。合适的PEG包括可从多种来源获得的市售牌号PEG200、PEG400、PEG600、PEG900和PEG1000。
在一些实施方式中,所述聚合涂层可以含有脂肪酸组分,例如脂肪酸或者脂肪酸盐或者脂肪酸酯的盐。例如可以使用聚乙二醇脂肪酸酯,例如PEG单硬脂酸酯、PEG单油酸酯、PEG二硬脂酸酯和PEG二异硬脂酸酯作为聚合涂层的组分。
在实施方式中,本发明公开的聚合涂层可以包括约90%至约99%重量份的可生物降解的聚合物,例如丙交酯/乙交酯共聚物,与占聚合涂层重量的约1%至约10%的附加的聚合物组分,例如PEG。在实施方式中,聚合涂层可以包括约95%至约99%重量份的可生物降解的聚合物,与占聚合涂层重量的约1%至约5%的附加的聚合物组分,在一些实施方式中,聚合涂层可以包括约97%至约99%重量份的可生物降解的聚合物,与占聚合涂层重量的约1%至约3%的附加的聚合物组分。
为了形成本公开的聚合涂层,所述聚合物(或共聚物)可以溶解在适当的溶剂中,以形成可以施加到外科手术网上的涂层溶液。生物相容性溶剂例如包括六氟异丙醇、丙酮、乙二醇乙酸酯、异丙醇、二氯甲烷、氯仿、四氢呋喃,二甲基甲酰胺、N-甲基吡咯烷酮、它们的组合以及本领域技术人员知识范围内的挥发性的和对外科手术网无破坏性的其它溶剂。
在实施方式中,外科手术网的大部分可及表面可以由涂层溶液覆盖。而在其它实施方式中,覆盖整个外科手术网。涂层可以覆盖约0.01%至约100%网的面积,在实施方式中覆盖约1%至约90%网的面积,逐渐地在其它实施方式中约25%至约50%。涂层的量也可以按涂覆网的重量百分比计,即,该涂层可以占网的总重量的约0.01%至约75%,在实施方式中,占网的总重量的约0.1%至约50%。
该涂层溶液可以由本领域技术人员能力范围内的任何方法施加到外科手术网上,包括:喷涂;超声喷涂;电喷涂;溶剂/浸涂,例如浸渍;溶剂蒸发;它们的组合等。在实施方式中,聚合物可以溶解在溶剂中,可以将网浸渍在溶液中并部分或完全地淹没。取出后,将网干燥,从而除去溶剂,将聚合物沉积在网上。在其它实施方式中,聚合物的混合物可以通过喷涂的喷嘴喷涂到网的表面上。可选择地,在本领域技术人员能力范围内的其它技术之中,所述聚合涂层可以在挤出、共挤出、拉挤成型和/或凝胶纺丝期间施加到外科手术网的纤维上,或者可通过熔融涂覆法或静电涂布法来施加聚合涂层。
生物活性剂可以添加到本公开的外科手术网中。此处所用的“生物活性剂”使用其最广泛的含义,包括具有临床用途的任何物质或物质的混合物。因此,生物活性剂本身可以具有或可以不具有药理学活性,例如,染料。可选择地,生物活性剂可以是提供治疗或预防作用的任何试剂;影响或参与组织生长、细胞生长和/或细胞分化的化合物;可以引起或阻止生物作用例如免疫应答的化合物;或者,可以在一个或多个生物过程中起到任何其他作用的化合物。多种生物活性剂可以结合到该网上。此外,可以增进组织的修复、限制败血症风险、以及调节网的机械性能(例如在水中的溶胀率、拉伸强度等)的任何试剂可以在制备外科手术网期间添加或涂覆到网孔上或网孔中。生物活性剂可施加到外科手术网的单根纤维或者可以施加到已形成的外科手术网,或者只是其一个或多个侧面或者部分。在实施方式中,生物活性剂可以添加到聚合涂层。
根据本公开的可以利用的生物活性剂的实例包括抗微生物剂、止痛剂、退热剂、麻醉剂、抗癫痫药剂、抗组胺剂、抗炎剂、心血管药剂、诊断剂、拟交感神经药剂、类胆碱作用药剂、抗毒蕈碱药剂、镇痉药剂、激素、生长因子、肌肉松弛剂、肾上腺素能神经元阻断剂、抗肿瘤药剂、免疫原性剂、免疫抑制剂、胃肠药、利尿剂、类固醇、脂质、脂多糖,多糖和酶。其还意图使用生物活性剂的组合。
本公开中的其它生物活性剂可以包括:局部麻醉剂、非类固醇类避孕剂、拟副交感神经剂、精神治疗药剂、镇静剂、减充血剂、镇静催眠药剂、类固醇、磺胺类药剂、拟交感神经剂、疫苗、维生素、抗疟药、抗偏头痛剂、抗帕金森剂(如L-多巴)、抗痉挛剂、抗胆碱能药剂(例如奥昔布宁)、镇咳药、支气管扩张剂、心血管剂(例如冠状血管扩张药和硝化甘油)、生物碱、镇痛药、麻醉剂(例如可待因、二氢可待因酮、哌替啶、吗啡等)、非麻醉剂(例如水杨酸酯、阿斯匹林、对乙酰氨基酚,d-丙氧酚等)、阿片受体拮抗剂(例如纳曲酮和纳洛酮)、抗癌药剂、抗惊厥药剂、抗催吐剂、抗组胺药剂、抗炎剂(例如激素制剂、氢化可的松、泼尼松龙、泼尼松、非激素制剂、别嘌呤醇、消炎痛、保泰松等)、前列腺素和细胞毒类药物、雌激素、抗菌药剂、抗生素、抗真菌剂、抗病毒制剂、抗凝血剂、抗惊厥药剂、抗抑郁剂、抗组胺剂以及免疫制剂。
可以包含在本公开中的合适的生物活性剂的其他实例包括:病毒和细胞;肽、多肽和蛋白质及其类似物、突变蛋白质和活性片段;免疫球蛋白;抗体;细胞因子(例如淋巴因子、单核因子、趋化因子);凝血因子;造血因子;白细胞介素(IL-2、IL-3、IL-4、IL-6);干扰素(β-IFN、(α-IFN和γ-IFN));促红细胞生成素;核酸酶;肿瘤坏死因子;集落刺激因子(例如GCSF、GM-CSF、MCSF);胰岛素;抗肿瘤剂和肿瘤抑制剂;血蛋白;促性腺激素(例如FSH、LH、CG等);激素和激素类似物(例如生长激素);疫苗(例如肿瘤的、细菌的和病毒性抗原);生长激素抑制剂;抗原;凝血因子;生长因子(例如神经生长因子、胰岛素样生长因子);蛋白抑制剂;蛋白拮抗剂;蛋白兴奋剂;核酸(例如反义分子、DNA和RNA);寡核苷酸;以及核酶。
为了获得最终的植入物,保持涂覆的外科手术网至干燥或者将其干燥。如果需要,该材料可以通过加热或在无菌空气喷射流体中干燥。干燥后,可以将涂覆的外科手术网包装并利用常规技术消毒灭菌,例如β(电子照射)或γ(用放射性钴照射)射线照射。
实施例
提交下列实施例来说明本公开的实施方式。这些实施例只是意在阐明,并不试图限制本发明的范围。此外,除非另有说明,份数和百分数均以重量计。如本文所用的“室温”指的是约20℃至约25℃的温度。
实施例1
使用70%的L-丙交酯/30%的乙交酯与PEG200、PEG600或PEG900来制备聚合物膜。按照表1在二氯甲烷中制备包括70%的L-丙交酯和30%的乙交酯的共聚物与PEG200(Sigma Aldrich)、PEG600(Sigma Aldrich)或PEG900(Sigma Aldrich)的溶液。添加溶剂后,每个闪烁瓶溶液的最终总重量为20克(g)。
表1
通过将聚合物组分与溶剂装入小瓶,并将小瓶放置在振动器上约3小时直至所有组分溶解来制备每个样品。然后通过在玻璃板上加约5ml的样品并将样品放置于设定为约40℃的预加热烤箱中而使膜在玻璃板上流延以避免相分离。加热约20分钟后,将样品放置在设定为约45℃温度的真空烘箱中。容许样品在超过48小时的期间进一步干燥。然后对膜进行差示扫描量热(DSC),1-12号瓶的各种聚合物混合物的玻璃化转变温度示于图1-12中。
本发明的植入体可以通过用本实施例的溶液涂覆外科手术网,然后干燥该涂布的外科手术网来制造。
实施例2
使用70%的L-丙交酯/30%的乙交酯与PEG600或PEG900来制备聚合物膜。按照表2在二氯甲烷中制备包括70%的L-丙交酯和30%的乙交酯的共聚物与PEG600(Sigma Aldrich)或PEG900(Sigma Aldrich)的溶液。每个闪烁瓶溶液的最终总重量为20克(g)。
表2
在流延到玻璃板上之前,使每个样品在振荡器上混合约4小时。将玻璃板放置在水浴上加热至约50℃。当玻璃板的触感热时,将大约5毫升样品分别移液到玻璃板上,并将其静置约10分钟。然后样品在防护罩内再静置10分钟,接着将其放置在设置为约45℃温度下的真空装置中。然后对膜进行差示扫描量热,1-4号瓶的各种聚合物混合物的玻璃化转变温度示于图13-16中。
本发明的植入体可以通过用本实施例的溶液涂覆外科手术网,然后干燥该涂布的外科手术网来制造。
实施例3
用70%的L-丙交酯/30%的乙交酯与和PEG二硬脂酸酯制备聚合物膜。按照表3在二氯甲烷中制备包括70%的L-丙交酯和30%的乙交酯的共聚物与PEG二硬脂酸酯(Sigma Aldrich)的溶液。每个闪烁瓶溶液的最终总重量为20克(g)。
表3
在玻璃板上流延之前,使每份溶液在振荡器上混合约4小时。将玻璃板放置在水浴上加热至约50℃。当玻璃板的触感热时,将大约5毫升样品分别移液到玻璃板上,并使其在水浴上静置约10分钟,然后在防护罩内再静置20分钟。然后将样品放置在设置为约45℃温度下的真空装置中。之后对膜进行差示扫描量热,1-3号瓶中的各种聚合物混合物的玻璃化转变温度示于图17-19中。
本发明的植入体可以通过用本实施例的溶液涂覆外科手术网,然后干燥该涂布的外科手术网来制造。
实施例4
用70%的L-丙交酯/30%的乙交酯与和PEG二硬脂酸酯或PEG900制备聚合物膜。按照表4在二氯甲烷中制备包括70%的L-丙交酯和30%的乙交酯的共聚物与PEG二硬脂酸酯(Sigma Aldrich)或PEG900(Sigma Aldrich)的溶液。每个闪烁瓶溶液的最终总重量为20克(g)。
表4
将每个样品放置在振动器上约48小时直至所有组分完全溶解。将玻璃板放置在水浴上加热至约50℃。当玻璃板的触感热时,将大约5毫升样品分别移液到玻璃板上,并使其静置约10分钟。然后在防护罩内再静置20分钟。接着放置在设置为约40℃温度下的真空装置中。抽真空并将样品放置过夜。其后,将样品从真空烘箱中取出,放置在干燥箱中约24小时。然后对膜进行差示扫描量热,1-6号瓶中的各种聚合物混合物的玻璃化转变温度示于图20-25中。
本发明的植入体可以通过用本实施例的溶液涂覆外科手术网,然后干燥该涂布的外科手术网来制造。
实施例5
用82%的L-丙交酯/18%的乙交酯与和PEG900或PEG二硬脂酸酯形成聚合物膜。按照表5在二氯甲烷中制备包括82%的L-丙交酯和18%的乙交酯的共聚物与PEG900(Sigma Aldrich)和PEG二硬脂酸酯(Sigma Aldrich)的溶液。每个闪烁瓶溶液的最终总重量为20克(g)。
表5
将每个样品放置在振动器上混合过夜以允许组分溶解。将玻璃板放置在水浴中将其加热至约50℃。当玻璃板的触感热时,将大约5毫升样品分别移液到玻璃板上,并将其静置约10分钟。然后在防护罩内再静置20至30分钟,接着放置在设置为约40℃温度下的真空装置中,放置过夜。其后,将样品从真空烘箱中取出,放置在干燥箱中约24小时。然后对膜进行差示扫描量热,1-6号瓶中的各种聚合物混合物的玻璃化转变温度示于图26-31中。
本发明的植入体可以通过用本实施例的溶液涂覆外科手术网,然后干燥该涂布的外科手术网来制造。
应当理解,可以对本发明所公开的实施方式作出各种修改。因此,以上描述不应当被解释为限制,而仅仅是作为示例性的实施方式的举例说明。本领域的技术人员将会在本公开的范围和实质内预见其他的修改。这样的修改和变形确定为落入以下权利要求的保护范围之内。
Claims (19)
1.一种植入体,包括:
包含可生物降解的聚合涂层的网,所述可生物降解的聚合涂层含有:
包括以聚合涂层重量的约90%至约99%的量存在的内酯的第一聚合物分;和
包括以聚合涂层重量的约1%至约10%的量存在的聚醚的第二聚合组分,
其中,所述可生物降解的聚合涂层具有约26℃至约36℃的玻璃化转变温度。
2.如权利要求1所述的植入体,其中,所述可生物降解的聚合涂层具有约30℃至约35℃的玻璃化转变温度。
3.如权利要求1或2所述的植入体,其中,所述第一聚合组分选自乙交酯、丙交酯、对二噁烷酮、ε-己内酯、三亚甲基己内酯、原酸酯、磷酸酯、共聚物及其混合物。
4.如权利要求1-3中任一项所述的植入体,其中,所述第一聚合组分是乙交酯和丙交酯的共聚物。
5.如权利要求4所述的植入体,其中,乙交酯以所述共聚物重量的约10%至约50%的量存在,且丙交酯以所述共聚物重量的约50%至约90%的量存在。
6.如权利要求4所述的植入体,其中,乙交酯以所述共聚物重量的约15%至约40%的量存在,且丙交酯以所述共聚物重量的约60%至约85%的量存在。
7.如权利要求1-6中任一项所述的植入体,其中,所述第二聚合组分选自烷基取代的氧化乙烯、聚氧化乙烯、亚烷基二醇、聚乙二醇、聚四亚甲基醚二醇以及它们的组合。
8.如权利要求1-7中任一项所述的植入体,其中,所述第二聚合组分为聚乙二醇。
9.如权利要求8所述的植入体,其中,所述聚乙二醇的分子量为约200g/mol至约1000g/mol。
10.如权利要求8所述的植入体,其中,所述聚乙二醇的分子量为约600g/mol至约900g/mol。
11.如权利要求1-10中任一项所述的植入体,其中,所述聚醚是聚乙二醇的脂肪酸二酯。
12.如权利要求1-11中任一项所述的植入体,其中,所述聚合涂层包含约95%至约99%重量份的第一聚合组分和约1%至约5%重量份的第二聚合组分。
13.如权利要求1-12中任一项所述的植入体,其中,所述聚合涂层包含约97%至约99%重量份的第一聚合组分和约1%至约3%重量份的第二聚合组分。
14.如权利要求1-13中任一项所述的植入体,其中,所述网进一步包括生物活性剂。
15.一种用于涂覆外科手术网的方法,包括:
通过在溶剂中溶解含有内酯的第一聚合组分和含有聚醚的第二聚合组分来制备溶液;
用上述溶液涂覆所述外科手术网以形成涂布的外科手术网;以及
干燥该涂布的外科手术网,
其中,所述聚合涂层具有约26℃至约36℃的玻璃化转变温度。
16.如权利要求15所述的方法,其中,所述第一聚合组分选自乙交酯、丙交酯、对二噁烷酮、ε-己内酯、三亚甲基己内酯、原酸酯、磷酸酯、共聚物及其混合物。
17.如权利要求15或16所述的方法,其中,所述第二聚合组分选自聚醚、烷基取代的氧化乙烯、聚氧化烯、亚烷基二醇、聚四亚甲基醚二醇以及它们的组合。
18.如权利要求15-17中任一项所述的方法,其中,所述溶剂选自六氟异丙醇、丙酮、乙二醇乙酸酯、异丙醇、二氯甲烷、氯仿、四氢呋喃、二甲基甲酰胺、N-甲基吡咯烷酮以及它们的组合。
19.如权利要求15-18中任一项所述的方法,其中,所述的外科手术网是通过选自喷涂、超声喷涂、电喷涂、浸涂、溶剂蒸发以及它们的组合的方法来涂覆的。
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EP2760494A2 (en) | 2014-08-06 |
CA2849052A1 (en) | 2013-04-04 |
AU2012313984A1 (en) | 2014-02-13 |
JP2014528264A (ja) | 2014-10-27 |
CN103781499B (zh) | 2016-09-28 |
AU2012313984B2 (en) | 2016-02-11 |
US9526603B2 (en) | 2016-12-27 |
CA2849052C (en) | 2019-11-05 |
WO2013046058A2 (en) | 2013-04-04 |
US20140236199A1 (en) | 2014-08-21 |
WO2013046058A3 (en) | 2013-07-04 |
EP2760494B1 (en) | 2017-04-19 |
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