CN1117708A - 伤口敷料 - Google Patents
伤口敷料 Download PDFInfo
- Publication number
- CN1117708A CN1117708A CN94191185A CN94191185A CN1117708A CN 1117708 A CN1117708 A CN 1117708A CN 94191185 A CN94191185 A CN 94191185A CN 94191185 A CN94191185 A CN 94191185A CN 1117708 A CN1117708 A CN 1117708A
- Authority
- CN
- China
- Prior art keywords
- dressing
- polymeric material
- wound dressing
- froth bed
- wound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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Abstract
一种吸收性伤口敷料(1),包括一层聚合物泡沫(3)、在泡沫层的至少一面(4)上有许多不连续的区(2),构成这些区的材料的润胀性比泡沫层材料低。
Description
本发明涉及用于处置皮肤损害的敷料。更具体地说,本发明涉及具有吸收性然而粘连皮肤损害的倾向又较小的单元敷料。
一个长期、普遍存在的问题是,用于渗出性损害的敷料容易出现下面两个或其中之一的不利情况:它们时常容易漂离伤口或者容易同受伤表面粘连。
上面的不利情况中头一种通常发生在当伤口产生特别大量的渗出液时。一般,克服这一问题的方法是在敷料上做出许多孔,以便渗出液能穿过孔进入吸附剂层,因此敷料仍保持同伤口接触。为此目的某些努力见诸于UK专利号778813、1398011、1408345和申请号2061732和2074029。一种成功的敷料是MELOLIN(商标,由英国Smith&Nephew公司,(Hull市),提供),它包括一层多孔合成聚合物膜和一层纤维素吸附剂垫。多孔膜贴着出液伤口,渗出液透过孔被吸附在垫中。较晚的一项建议是使用一种多孔聚四氟乙烯膜,旨在尽可能地降低敷料粘连伤口的危险。
上面不利情况的后一种通常发生在当伤口因缺乏渗出液而完全变干时。用力取下敷料将造成对蒙在伤口上新生皮层的破坏且因而拖延伤口愈合时间。一般地,克服这一问题的方法是给敷料提供一个能延缓水分丧失的连续层。能做到这一点的一项有效的手段见诸于英国专利号1280631。
然而,没有一种已知的方法是没有缺点的,因为对一种伤口可能有出色效果的敷料,对于许多其他类型的伤口会是不适合的,原因在于伤口在其渗出液数量方面相差很大。现已认识到,不仅需要一种能适用许多不同类型伤口的敷料,而且还需要一种敷料能较好应付一既定伤口产生渗出液速率上的变化。现已发现一种敷料,不仅允许在与出液伤口接触时让较大量的渗出液透过,而且当伤口只产生少量渗出液时有助于保持伤口处于一种湿润状态,结果它既不会漂离湿润的伤口也不易与受伤表面粘连。现已发现,该新型敷料具有进一步的优点,即当伤口只产生少量渗出液时,有助于使伤口处于一种湿润状态,结果是该敷料既不会漂离湿润的伤口,也不易与受伤表面粘连。已发现这种新敷料具有进一步的优点,即它具有促进伤口上皮再生的性能。
因此,本发明提供一种吸收性敷料,它包括具有第一表面和与之背向的第二表面的柔顺的亲水性聚合物泡沫层,其第一表面上有许多不连续的聚合物材料区块。该聚合物材料与水接触时的润胀性比聚合物泡沫小。
已经发现,当这种敷料配置了这种与湿表面接触的聚合物材料区块时,泡沫层吸收流体,例如水或渗出液并且膨胀。由于这些区块是不连续的(即互相分开),它们能移动得彼此散开,从而增加了能用于吸收的泡沫层第一表面的表面积,从而进一步促进了吸收。泡沫层润胀引起的这些区块的散开移动导致这些区占据润胀后的位置。随水的被吸收,能供泡沫层吸收的水量便不断减少。随着渗出液横穿泡沫层第一表面并进入泡沫层内部,湿蒸汽横穿泡沫层第二表面而逃逸。随着湿蒸汽逃逸,泡沫渐干并收缩。泡沫层的收缩造成能用于吸收的泡沫第一表面的表面积渐少。随第一表面的表面积减少,这些区块就收拢,直至返回其收缩的位置。随着这些区块的收拢,敷料变得越来越阻塞。
当盖在非潮湿表面时,泡沫层不发生上述润胀过程。虽然这些区块是不连续的,但它们靠得足够近以防止非溢出性伤口变干。最适宜地,这些区块覆盖泡沫层第一表面的表面积的至少70%;更有利地,这些区块覆盖该表面积的至少80%;且较好地,这些区块覆盖泡沫层第一表面的表面积的至少90%。正常情况下,泡沫层第一表面被覆盖的表面积不超过99%,且较好不超过95%的泡沫层第一表面的表面积被覆盖(百分数指的是吸附发生之前,即非吸水状态时具有不连续区块的吸附剂层的表面积的百分率)。
所谓潮湿表面指的是其上存在含水液体,例如水、血、蛋白质伤口渗出液等等的表面。
在一种较好的形式中,第二表面覆盖了水汽透过性膜。这种透水汽膜的存在起着对水汽自吸收剂层逃逸控制的机制。
在更好的形式中,伤口敷料是对称的,且在第一和第二表面都分布有不连续的区块。
由上述可见,本发明的敷料当放到渗液伤口的湿表面时,处于不断改变的状态。当区块抵住伤口表面时,渗出液被区块之间聚合物泡沫层第一表面吸收,于是泡沫层润胀。由于区块聚合物材料接触水后润胀性小于合成聚合物泡沫,故区块散开从而暴露出更多用于吸收的聚合物泡沫层第一表面。这样,渗出的液体愈多,泡沫层愈趋润胀,吸收的液体也愈多。随着渗出液数量减少,而借蒸发自敷料失去的水蒸汽量大于吸收速率,泡沫层便开始收缩,区块相互靠拢,直至区块在不渗出伤口上重获或几乎重获其原来的位置。当区块处于收缩位置时,它们能防止伤口变干并从而使敷料粘连伤口的倾向减少。若敷料放在未破正常皮肤或非渗出伤口上时,上述活动便不发生。
在一个较好实施方案中,敷料第二表面带有许多如上述类型的不连续区块,故不论第一或第二表面都可以贴于伤口,从而避免了因不经意把错误的敷料一面贴在伤口上的危险。从下文将会看出,在使用过程中,本发明敷料是这样敷在伤口上的,即不连续区块同伤口表面接触。凡敷料只在其泡沫层第一表面上包含不连续区块的场合,所说第一表面和不连续区块将构成敷料的伤口接触层。在第二表面上不连续区块的存在也将会减慢水经敷料的非伤口接触侧散失,因而能使伤口湿度环境保持更长时间而又不影响泡沫层对渗出液的吸收。
虽然区块可以包含混合物,例如不同聚合物材料的共混物,但较好使用单一的聚合物材料。较好该聚合物材料是合成聚合物。稍逊些,该聚合物材料是天然聚合物,例如天然乳胶。类似地,泡沫层可以包含不同材料的混合物。然而,较好泡沫层包含单一材料。该泡沫层包含亲水性泡沫。
适宜地,泡沫层包括一种柔顺的亲水性合成聚合物,它具有适应性,能吸收伤口渗出液。较好地,泡沫层能快速吸收伤口渗出液,因为这能提高此种敷料的效力。合适的柔顺亲水性泡沫一般是柔软的开孔泡沫。
开孔泡沫吸收和保持流体的能力在一定程度上取决于泡沫的孔径和泡沫的孔隙度。
合适的开孔、亲水性泡沫具有30μ-700μ的孔径,较好50μ-500μ的孔径。适合的开孔泡沫,其20%-70%,较好30%-60%总的孔膜面积是膜开孔。用于本发明敷料的这种开孔泡沫允许向泡沫以及在其内部输送流体和细胞碎屑。
亲水性聚合物泡沫可以合适地用聚氨酯、纤维素、羧基化丁苯橡胶、聚酯泡沫、亲水性环氧泡沫或聚丙烯酸酯制成。这些泡沫本身是亲水性的。但是,它们还可以经处理,例如用表面活性剂,以赋予它们更大的亲水性。使用包含亲水性聚合物的泡沫能减少渗出液很快在泡沫内凝聚的倾向。这有助于伤口即使在停止产生渗出液时仍保持在湿润的状态。
较好的亲水性聚合物泡沫是由亲水性聚氨酯,尤其是交联、亲水性聚氨酯制成的。这种亲水性聚氨酯一般地,当水合时吸收至少5%(重量)的水,更合适地,当充分水合时可吸收高达其重量的300-400%的水。较好的泡沫包括如EP-A-299122所描述的泡沫和被称为Hypol泡沫(由Hypol亲水性异氰酸酯封端的预聚物制成,Hypol是商标,由WR Grace公司提供)的材料。将预聚物与水混合然后固化。
泡沫层的吸水量可介于EP0299122B所述的宽广吸水量范围内,例如介于聚合物重量的25-95%。较好地,水吸收量介于50-92%(重量)。
合适的亲水性泡沫吸附剂层的厚度介于0.5mm-20mm,更合适的介于0.8mm-12mm,较好的介于1mm-8mm,例好4mm-6mm。
合适的区块包含一种聚合物材料,聚合物材料与水接触后润胀度小于合成聚合物泡沫的润胀度。较好,该聚合物材料遇水后不润胀,即在流体存在下保持惰性。合适的聚合物包括:聚氨酯、聚氯乙烯、聚乙烯、聚四氟乙烯、聚丁二烯、聚硅氧烷、聚酯、硅氧烷、醋酸乙烯酯聚合物、聚酰胺、聚醚聚酰胺、聚苯乙烯、苯乙烯丁二烯共聚物、苯乙烯异戊二烯苯乙烯共聚物、聚丙烯酸酯、氰基丙烯酸酯、聚醋酸乙烯酯、酚醛及环氧树脂等等。较好的聚合物是聚氨酯。合适的聚氨酯包括聚酯和聚醚聚氨酯,例如ESTANES(B F Goodrich公司注册商标)。合适的ESTANES包括5702、5701和580201。
上述聚合物材料可以采用任何合适的热熔融聚合物材料分散方法,例如缝模涂敷、凹槽辊涂布、辊涂、喷涂、射流及丝网涂布或印刷。
这些区块可以在一定程度上自第一和/或第二表面突起,其突起程度与敷料的操作相协调。区块可大致地分为两种:延展程度大于接触伤口的区块表面主轴线尺寸,在此称做“突块”,和区块延展程度小于区块表面主轴线尺寸两类。举例说,凡该表面是圆形的,所指尺寸即圆的直径。
较好,区块互相分立,即其基部不相接。这样,在各个区块基部之间存在着间隙,于是区块共同构成泡沫层表面的图案,这些间隙确定了除区块之外的泡沫层面积。
接触伤口的区块表面可以具有任何形状。较好该表面是平头而不是尖头的。合适地,该表面是圆盘形、椭圆、半球或四方形的。区块可以是立方、圆柱、截头金字塔、六角等等形状的。较好区块是截头金字塔,且最好是截头四方金字塔形的。
区块自泡沫层表面突起程度可以从0.1mm-2.5mm,较合适从0.2-2.0mm,较好从0.5-2.0mm。
合适地,每cm有2-15个区块,较好每cm4-8个区块,例如5-6或7个区块。
一种倾向的区块布置是,每厘米5个区块的图案,块的形状为截头四方金字塔形,沿泡沫层表面按45°对角线排成行,每个金字塔底部是1.6mm2,贴伤口的表面是1.53mm2。
相邻区块间间隙0.4mm。较好区块呈60°锥角的锥度。
第二种倾向的区块布置是每厘米4突块的图案,突块为截头四方金字塔形,沿敷料整个表面按45°对角线排成行,金字塔底部是2mm2,底边间距0.5mm,块呈60°的锥角,接触伤口表面积是1.91mm2。
上面已经说过,区块底部间隙使得伤口渗出液能与泡沫层沟通并被吸收。随后的润胀导致吸收剂层的线膨胀,增加了区块底部间空隙。典型地,线膨胀量介于15-55%,更典型地,介于22-38%。吸收结束并待敷料变于后,区块底部间空隙基本上恢复到原来的大小。
通常,这些岛屿互相不连接。沿岛屿周长某些距离上岛屿可以相挨,但合适地,各个岛屿间沿周长将有一定距离。岛屿可以是任何形状的。合适地,岛屿是圆形、椭圆形等等。较好地,岛屿为四方、矩形、三角形、六角形等等。
岛屿的厚度从0.002mm到0.5mm,较合适的0.005-0.1,较好的0.01-0.5mm。
合适地,本发明的敷料将被做成具有湿汽透过率(MVP)介于200-5,000g/m2·24小时(37℃下,相对湿度差为100%对10%)。该MVP可以按照EP申请号90905227.6披露的湿汽透过速率的测定方法测量。该敷料在干伤口上会适宜地表现出较低的透过率(区块合拢),而在湿或高渗出液的伤口上表现出较高的透过率(区块散开)。已发现,敷料的这种湿汽透过性能允许敷料下的伤口在湿润状态下愈合又不会造伤口周围的皮肤变得被浸渍。
在泡沫层第二表面上包括湿汽透过膜的情况下,所说膜可以是连续的也可以是不连续的。
较好的湿汽透过膜是连续、富有弹性、柔顺的膜。该膜有助于敷料下伤口部位水汽散失的调节。它还起阻隔细菌和液体水的作用。
合适的湿汽透过膜是富有弹性、连续、柔顺的膜。合适的连续膜在37℃和100%对10%相对湿度差下的MVP大于300g/m2·24小时。合适地,该MVP在37℃和100%对10%相对湿度差下的数值一般不超过5000g/m2·24小时。较好地,该MVP在37℃和100%对10%相对湿度差下将大于500,更好至少700,且最好至少2000g/m2·24小时。
适合做连续膜的聚合物包括聚醚或聚酯聚氨酯,或聚氨酯与不兼容聚合物,例如聚烯烃(象聚苯乙烯)的共混物,还可以包括上面描述的生产多孔膜用的材料。合适地,此膜至少12.5μm厚。合适的膜最厚达50μm,较好介于25-40μm厚。
较好的膜由线型聚氨酯构成。较倾向的连续膜厚度介于12.5μm-37.5μm。一种较好的用于此种厚度的聚氨酯是Estane 5714F。25μm厚的Estane 5714F膜具有大约1800g/m2·24小时的MVP,以便可以用于产生较好范围内的湿汽透过率。进一步合适的膜包括聚氨酯或烷氧基烷基丙烯酸酯或甲基丙烯酸酯的共聚物,例如英国专利号1280631所披露的。
该膜可以是一种象英国专利申请号2081721所述的聚氨酯与不兼容聚合物共混物的柔顺膜。
另外,合适的柔顺、不连续、透湿汽材料也可以覆盖泡沫层的第二表面。为此,任何一般用于伤口敷料的透湿汽材料均可使用。此种外层包括柔顺、富有弹性、多孔及及微孔膜、无纺布、网及机织或针织物。
较好的不连续材料包括可伸长性网眼无纺织物和弹性网。此种较好的材料披露在英国专利号2093702和2093703上,这些文献也收做本文的参考文献。
合适的不连续材料包括微孔膜。合适的柔顺、透湿汽微孔膜具有的透过率为300-5000g/m2·24小时,且较好在500-4000g/m2·24小时之间,测定条件:37℃,相对湿度差100%。
合适的微孔膜具有小于2μm的孔径,希望小于0.6μm,较好小于0.1μm。合适的孔将大于0.01μm。
合适的聚合物包括增塑聚氯乙烯、聚氨酯弹性体和乙烯-醋酸乙烯共聚物弹性体。较好的柔顺微孔膜包括微孔、增塑聚氯乙烯。
所有柔顺的透湿汽膜、无纺布、网、机织或针织物,以下统称衬底层,可以在其朝向泡沫层的一面包含透湿汽的粘合剂层,以便把衬底层同泡沫层粘合起来。此种粘合剂层可以是连续的也可以是不连续的。
透湿汽、连续层形式的合适粘合剂包括各种丙烯酸酯共聚物和聚乙烯基乙基醚压敏粘合剂,例如由英国专利号1280631披露的。较好的压敏粘合剂包括丙烯酸酯和丙烯酸的共聚物,例如由英国专利申请号2070631A披露的。
用于衬底层的合适的不连续粘合剂层可以是任何传统地用于伤口敷料的粘合剂。此种不连续粘合剂层可以包括多孔、微孔或满地花纹的层。
适用地,这种衬底层将能够同泡沫层一起伸长。较好地,该衬底层的表面积大于第二表面的表面积,以便敷料能粘在伤口周围的皮肤上。衬底层是透湿汽的,故这部分敷料下面的皮肤不会被浸渍。
本发明的敷料可以含有局部活性药物。最合适地,该药物是一种抗菌剂。较好该抗菌剂是一种广谱抗菌剂,例如银盐、磺胺嘧啶、可接受碘源,如碘化Povidone(也称碘化聚乙烯基吡咯烷酮或者PVP/I),Chlorhexidine盐,象葡萄糖酸盐、醋酸盐、盐酸盐等或季铵盐抗菌剂,例如氯苄烷铵。较好的抗菌剂包括Chlorhexidine盐。较好地,药物含于泡沫层中。
本发明的敷料最适合为无菌的。较好地,该敷料被封在防菌包装内提供。这种无菌敷料和这种包含无菌敷料的包装就构成了本发明最好的方面。敷料可以通过任何灭菌手段无菌化,例如通过γ-射线照射、蒸汽消毒或Eto。
制造本发明敷料的一种方法是在片材的适当形状凹槽内浇铸入该聚合物材料。制做片材的合适材料是硅氧烷材料,它允许在希望时容易地使区块脱模。聚合物材料通常是以溶液形式浇铸的。把凹槽灌注到一定深度然后去除溶刘。然后,将准备包括该聚合材料的亲水性泡沫浇铸到聚合物材料的顶面。聚合物泡沫固化后,将片材从如此形成的敷料上拿掉。若要求敷料在泡沫层的第一和第二表面都有区块,则在包括聚合物泡沫层的泡沫尚未完全固化时在与第一片材相对的另一面再放上一块充填了聚合材料的凹槽片材,从而提供一种在第一和第二面均带有区块的敷料。上述的方法尤其适合于突起的区块。
带有岛屿的敷料的尤其适合的成形方法是印刷,例如常常称之为转印或网印(例如丝网印)的方法。网印尤其适合。将聚合物材料溶解在适当的溶剂中,涂布在突起的图标板上,然后印到泡沫层的第一表面上。在要求敷料泡沫层两面都有区块的场合,通过在第二表面上再实行一道最后聚合物材料网印步骤很容易达到这一要求。
适合于亲水性聚合物泡沫的浇铸溶液可以含有15%-35%(重量)的,例如热塑性聚氨酯,较好地含20-30%(重量)ESTANE 5714F在四氢呋喃或四氢呋喃-丙酮混合物中的溶液。
适合用于制造亲水性聚合物泡沫的表面活性剂包括非离子表面表活性剂。较好的非离子表面活性剂是一种氧化丙烯-氧化乙烯嵌段共聚合物,商品名Pluronics,由BASF Wyanclotte生产。另一种较好非离子表面活性剂是一种聚氧乙烯十八醇醚,商品名Brij72,由Honeywell Atlas生产。
用于制造合适的亲水性泡沫的组合物和方法见诸于,例如英国申请号2093702,也收作本文的参考文献。
因此,就进一步的方面而言,本发明提供在动物身体的伤口上贴敷的方法,包括在伤口上放一块敷料,敷料包括柔顺的亲水性聚合物层,它有第一表面和与之背向的第二表面,第一表面有许多不连续的聚合物材料区块,聚合物材料触水后润胀性小于聚合物泡沫。
下面,将结合附图说明本发明较好的敷料,其中,
图1表示第一表面上有许多不连续聚合物材料区块的敷料的断面视图。
图2表示聚合物泡沫层的第一和第二面均有不连续聚合物材料区块的敷料的断面视图。
图3表示吸收之前敷料的俯视图。
图4表示在吸收一定量液体之后类似于图3的俯视图。
图1显示敷料(1)的断面视图,在其泡沫层(3)的第一表面上有许多不连续的区块(2)。该不连续区块的形状是截顶四方金字塔。区块彼此分开以留出未覆盖的泡沫表面。
图2显示分别在第一和第二表面(4和5)上均具有区块的敷料的断面图。这些区块不必象图中面出的那样一一相对。
图3显示敷料在发生任何吸收之前敷料第一表面(4)的视图。区块之间距离很小。
图4显示吸收流体之后,图3的敷料。区块在泡沫表面平面内沿两个方向彼此离开。
当敷料中的区块高度较矮时,看到了类似的效应。实例1
含有20%(重量)聚醚聚氨酯(ESTANE 5714F(商标))在60/40(重量比)四氢呋喃/丙酮混合物中的溶液被浇铸到15cm宽的硅氧烷片的凹槽内,其中凹槽的形状是截顶四方金字塔。将凹槽灌注至充足深度以便在经热空气炉干燥除去溶剂之后提供每个约60μm厚的沉于每个凹槽底的各个截顶金字塔。
将亲水性泡浇铸在截顶聚氨酯金字塔上的过程如下:采用双组分配量装置(由Prodef工程公司提供的Vario-mix),将比例为1∶2.25的Hypol FHP 2002和Brij72(2%水溶液)混合而制成发泡混合物。通过15cm鱼尾模板形式的输出喷口将发泡混合料喂入涂敷头,再用辊子涂布头和上方的一把刮刀进行涂布。把浇铸的泡沫在5分钟内通过50℃温度下的空气循环炉而获得干燥。然后,把生成的一面带有不连续突块的条形敷料与硅氧烷凹槽片分离。
可以把材料切成适当的尺寸包装在传统防菌包装内并做无菌处理。用时,将敷料从包装盒取出并将突块的一面敷在伤口上。
实例2
按实例1所述方法制备了2条类似的敷料,不同的是,趁泡沫尚未固化之前,将2条敷料一面压在另一条的一面上,施加轻微压力以便二表面互相粘合变成一条敷料,此敷料的两面都有突块。
通过把有颜色的水洒到实例1制备的带有突块的敷料表面,考察敷料膨胀和收缩的有效性。只见水速迅被吸入亲水性泡沫,同时突块互相远离,移动了原距离的100%。让水从敷料蒸干后,突块又恢复到其原有的位置。
实例3
在一层基膜(175μm厚的聚丙烯)上涂布聚氨酯(ESTANE5702)溶液(35%溶于甲乙酮),膜上突起的正方形面积(3mm×3mm)被1mm厚的凹陷面积所分割。将涂布层转移到吸水(润胀)状态的泡沫表面上。在室温下令泡沫干燥。制成的敷料包括约2mm厚的一层泡沫,在其第一表面带有约10μm厚聚氨酯膜不连续四方区块。
将敷料放在湿表面时,敷料吸收水份并膨胀,允许吸收更多的水分并沿泡沫层散布。当湿表面干燥到只剩少量残余含湿量的某一点,泡沫变干,突块彼此靠拢,该表面得以保持一定的含湿量。
实例4
制备了类似于实例3的敷料,不同的是在泡沫的第一和第二面上都带有不连续的区块,区块具有约10μm厚、正方形表面区的聚氨酯膜。
按照本发明,提供了又一种制造敷料的方法,其中泡沫层被浇铸到希望的厚度;随后,将聚合物材料分散在泡沫层的第一面,在第一面上形成许多不连续的区块。
Claims (16)
1.一种吸收性伤口敷料,包含具有第一表面和背向的第二表面的柔顺、亲水性聚合物泡沫层,该第一表面带有许多不连续的聚合物材料区块,该聚合材料触水后的润胀性小于合成聚合物泡沫触水后的润胀性。
2.按照权利要求1的伤口敷料,其中聚合物泡沫包含合成聚合物。
3.按照权利要求1或2的伤口敷料,其中第二表面带有许多不连续的聚合物材料区块,该聚合物材料触水后的润胀性小于合成聚合物泡沫触水后的润胀性。
4.按照上述权利要求中任何一项的伤口敷料,其中聚合物材料是合成聚合物。
5.按照权利要求1、2或3中任何一项的伤口敷料,其中聚合物材料是天然聚合物。
6.按照权利要求1的伤口敷料,其中第二表面上覆盖了透湿汽膜。
7.按照权利要求6的伤口敷料,包括把透湿汽膜和泡沫层第二表面结合起来的粘合剂层。
8.按照权利要求7的伤口敷料,其中透湿汽膜延伸到超出泡沫层。
9.按照上述权利要求中任何一项的伤口敷料,其中聚合物泡沫是聚氨酯。
10.按照上述权利要求中任何一项的伤口敷料,其中聚合物材料是压敏粘合剂。
11.按照权利要求10的伤口敷料,其中聚合物材料是聚丙烯酸酯。
12.按照权利要求10的伤口敷料,其中聚合物材料是以聚苯乙烯为主要成分的聚合物。
13.按照权利要求1-8的伤口敷料,其中聚合物材料是弹性体合成聚合物。
14.一种制造按照权利要求1的敷料的方法,其中泡沫层被浇铸至所要求的厚度,然后在泡沫层第一表面上散布聚合物材料,形成第一表面上的许多不连续的区块。
15.一种制造按照权利要求1的敷料的方法,其中向模具里浇铸许多不连续的聚合物材料区块,然后在该聚合物材料上面浇铸要求厚度的泡沫层。
16.一种利用按照权利要求1-13中任何一项的敷料的处置方法。
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-
1993
- 1993-02-15 GB GB939302970A patent/GB9302970D0/en active Pending
-
1994
- 1994-02-14 ES ES94906315T patent/ES2124871T3/es not_active Expired - Lifetime
- 1994-02-14 DK DK94906315T patent/DK0683654T3/da active
- 1994-02-14 CA CA002156047A patent/CA2156047A1/en not_active Abandoned
- 1994-02-14 DE DE69413671T patent/DE69413671T2/de not_active Expired - Lifetime
- 1994-02-14 AU AU60072/94A patent/AU680233B2/en not_active Expired
- 1994-02-14 JP JP51783894A patent/JP3940433B2/ja not_active Expired - Lifetime
- 1994-02-14 AT AT94906315T patent/ATE171610T1/de not_active IP Right Cessation
- 1994-02-14 WO PCT/GB1994/000291 patent/WO1994017765A1/en active IP Right Grant
- 1994-02-14 GB GB9515022A patent/GB2289627B/en not_active Expired - Fee Related
- 1994-02-14 CN CN94191185A patent/CN1117551C/zh not_active Expired - Fee Related
- 1994-02-14 US US08/501,091 patent/US5782787A/en not_active Expired - Lifetime
- 1994-02-14 EP EP94906315A patent/EP0683654B1/en not_active Expired - Lifetime
- 1994-02-15 ZA ZA941026A patent/ZA941026B/xx unknown
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN1293923C (zh) * | 2002-02-15 | 2007-01-10 | 科洛普拉斯特公司 | 创伤护理装置 |
CN1731965B (zh) * | 2002-12-30 | 2010-12-08 | 金伯利-克拉克环球有限公司 | 具有侧边防漏阻挡件的妇女护理吸收制品 |
CN104042438A (zh) * | 2013-03-11 | 2014-09-17 | 柯惠有限合伙公司 | 具有排汗功能的加压服装 |
Also Published As
Publication number | Publication date |
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DE69413671T2 (de) | 1999-05-12 |
ES2124871T3 (es) | 1999-02-16 |
CN1117551C (zh) | 2003-08-13 |
DK0683654T3 (da) | 1999-06-21 |
GB9302970D0 (en) | 1993-03-31 |
AU680233B2 (en) | 1997-07-24 |
US5782787A (en) | 1998-07-21 |
EP0683654A1 (en) | 1995-11-29 |
WO1994017765A1 (en) | 1994-08-18 |
AU6007294A (en) | 1994-08-29 |
EP0683654B1 (en) | 1998-09-30 |
CA2156047A1 (en) | 1994-08-18 |
GB2289627B (en) | 1996-11-27 |
ATE171610T1 (de) | 1998-10-15 |
JPH08506256A (ja) | 1996-07-09 |
JP3940433B2 (ja) | 2007-07-04 |
ZA941026B (en) | 1994-08-25 |
GB9515022D0 (en) | 1995-10-04 |
GB2289627A (en) | 1995-11-29 |
DE69413671D1 (de) | 1998-11-05 |
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