CN102046216A - 各向异性盖布和系统 - Google Patents

各向异性盖布和系统 Download PDF

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CN102046216A
CN102046216A CN2009801189380A CN200980118938A CN102046216A CN 102046216 A CN102046216 A CN 102046216A CN 2009801189380 A CN2009801189380 A CN 2009801189380A CN 200980118938 A CN200980118938 A CN 200980118938A CN 102046216 A CN102046216 A CN 102046216A
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isotropism
district
drop cloth
wound
thickness
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CN102046216B (zh
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小理查德·马文·卡扎拉
贾斯汀·亚历山大·龙恩
罗伯特·佩顿·威尔克斯
R·W·约翰森
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3M Innovative Properties Co
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Abstract

用于治疗患者身上的创伤的各向异性创伤盖布(116)包括用于放置在组织部位上的柔性片(123)。柔性片包括第一各向同性区(124)和第二各向同性区(126)。第一各向同性区和第二各向同性区被配置为向柔性片提供各向异性的伸展性质。各向异性盖布(116)可以用作减压创伤治疗系统的一部分。还示出了其他的系统和方法。

Description

各向异性盖布和系统
相关申请
本发明根据美国法典第35卷第119条(e)款要求以下申请的汇集的利益:于2008年5月30日提交的题目为“Reduced-pressure Surgical Wound Treatment System”的美国临时专利申请序列号61/057,807;于2008年5月30日提交的题目为“Dressing Assembly For Subcutaneous Wound treatment Using Reduce Pressure”的美国临时专利申请序列号61/057,798;于2008年5月30日提交的题目为“See-Through,Reduced-Pressure Dressing”的美国临时专利申请序列号61/057,808;于2008年5月30日提交的题目为“Reduced-Pressure Dressing Assembly For Use in Applying a Closing Force”的美国临时专利申请序列号61/057,802;于2008年5月30日提交的题目为“Reduced-Pressure,Linear-Wound Treatment System的美国临时专利申请序列号61/057,803;于2008年5月30日提交的题目为“Reduced-Pressure,Compression System and Apparatus for use on a Curved Body Part”的美国临时专利申请序列号61/057,800;于2008年5月30日提交的题目为“Reduced-Pressure,Compression System and Apparatus for use on Breast Tissue”的美国临时专利申请序列号61/057,797;于2008年5月30日提交的题目为“Super-Absorbent,Reduced-Pressure Wound Dressing and System”的美国临时专利申请序列号61/057,805;于2008年5月30日提交的题目为“Reduced-Pressure,Compression System and Apparatus for use on a Joint”的美国临时专利申请序列号61/057,810;于2008年12月10日提交的题目为“Reduced-Pressure Wound treatment System Employing an Anisotropic Drape”的美国临时专利申请序列号61/121,362;以及于2009年1月12日提交的题目为“Reduced-Pressure,Compression System and Apparatus for use on a Joint”的美国临时专利申请序列61/144,067。所有这些临时申请都为了所有目的通过引用被并入本文。
背景
本发明大体上涉及医学治疗系统,并且更具体地涉及各向异性盖布以及采用各向异性盖布的减压创伤治疗系统和处理方法。
蒸气和氧气可渗透的各向同性的膜敷料(经常被称为盖布)可以用于覆盖创伤或组织的被损伤的区域,以便于愈合并且防止感染。这些各向同性的盖布的弹性是实质上一致的。然而,如果人们想要在一个方向以特定的比率并且在另一个方向以另一个比率调节组织(例如皮肤组织或皮下组织)的平移或靠近,那么这可能是一个问题。对组织平移的不适当的调节可以涉及消极的副作用,包括但不限于水泡、色素沉着过多以及许多其他皮肤并发症和刺激。还可能存在其他缺点。
简要概述
所示的和所描述的例证性的实施方案处理创伤护理系统和方法的缺点。根据一个例证性的实施方案,用于治疗患者身上的组织部位的减压创伤治疗系统包括创伤盖布,创伤盖布具有带有第一各向同性区和第二各向同性区的柔性片。第一各向同性区和第二各向同性区被配置为向柔性片提供各向异性的伸展性质。系统还包括用于布置在创伤盖布和组织部位之间的歧管以及用于向歧管传送减压的减压子系统。
根据另一个例证性的实施方案,创伤盖布包括用于放置在组织部位上的柔性片。柔性片具有第一各向同性区和第二各向同性区。第一各向同性区和第二各向同性区被配置为向柔性片提供各向异性的伸展性质。
根据另一个例证性的实施方案,创伤盖布包括柔性片以及耦合于柔性片的各向异性构件。柔性片和各向异性构件被配置为向柔性片提供各向异性的伸展性质,使得柔性片在第一方向比在第二方向伸展得更多。
根据另一个例证性的实施方案,创伤盖布包括柔性片以及耦合于柔性片的可流体膨胀的囊。柔性片和可流体膨胀的囊被配置为向柔性片提供各向异性的伸展性质,使得柔性片在第一方向比在第二方向伸展得更多。可膨胀的囊可以采取许多的形式。创伤盖布可以提供闭合力。
根据另一个例证性的实施方案,用于用减压处理患者身上的组织部位的方法包括将歧管布置为接近组织部位,在歧管上布置各向异性创伤盖布,将各向异性盖布密封于患者的表皮,并且将减压源流体地耦合于歧管。各向异性盖布包括至少第一各向同性区和第二各向同性区,使得各向异性盖布在第一方向比在第二方向伸展得更多。
根据另一个例证性的实施方案,制造创伤盖布的方法包括形成用于放置在组织部位上的具有第一各向同性区和第二各向同性区的柔性片的步骤。第一各向同性区和第二各向同性区被配置为向柔性片提供各向异性的伸展性质。
参照下文的附图和详细描述,例证性的实施方案的其他特点和优点将变得明显。
附图的简要说明
当与附图结合理解时,通过参照以下的详细描述可以获得对本发明的更完全的理解,在附图中:
图1是减压创伤治疗系统的例证性的实施方案的、一部分以横截面示出的示意性的透视图;
图2是图1的减压创伤治疗系统的一部分的示意性的横截面图;
图3A是创伤盖布的例证性的实施方案的第一各向同性区和第二各向同性区的示意性的横截面图;
图3B是创伤盖布的另一个例证性的实施方案的第一各向同性区的示意性的横截面图;
图4A是减压创伤治疗系统的一部分的例证性的实施方案的示意性的俯视图;
图4B是图4A的减压创伤治疗系统的沿图4A中的线4B-4B取的示意性的横截面图;
图5A是减压创伤治疗系统的一部分的例证性的实施方案的示意性的俯视图;
图5B是图5A的减压创伤治疗系统的沿图5A中的线5B-5B取的示意性的横截面图;
图6A是减压创伤治疗系统的一部分的例证性的实施方案的示意性的俯视图;
图6B是图6A的减压创伤治疗系统的沿图6A中的线6B-6B取的示意性的横截面图;
图7A是减压创伤治疗系统的例证性的实施方案的示意性的俯视图;以及
图7B是图7A的减压创伤治疗系统的沿图7A中的线7B-7B取的示意性的横截面图。
详细描述
在以下的对例证性的实施方案的详细描述中,参考了附图,附图形成例证性的实施方案的一部分,并且其中作为例子示出了本发明可以被实践的具体的实施方案。这些实施方案被足够详细地描述以使本领域的技术人员能够实践本发明,并且应当理解,可以利用其他的实施方案并且可以做出逻辑结构的、机械的、电的以及化学的变化而不偏离本发明的精神或范围。为了避免对使本领域的技术人员能够实践本发明不必要的细节,描述可能省去了本领域的技术人员已知的某些信息。以下的详细描述不应在限制的意义理解,并且本发明的范围仅由所附的权利要求限定。
现在参照图1-3B,示出了用于治疗组织部位例如切口102的减压治疗系统100。减压治疗系统100存在于包括切口102和被破坏的皮下组织部位110的一般的组织部位的背景中,但是应认识到,减压治疗系统100可以用于治疗许多不同类型的创伤,包括开放的创伤或其他组织部位。组织部位可以是任何人类、动物或其他生物体的身体组织,包括骨组织、脂肪组织、肌肉组织、皮肤组织、脉管组织、结缔组织、软骨、肌腱、韧带或任何其他组织。
减压治疗系统100被示为在围绕切口102的环绕切口的区域(peri-incisional region)中,切口102经过表皮104或皮肤以及真皮106并且到达下皮或皮下组织108。皮下组织108可以包括许多组织类型,例如脂肪组织或肌肉。被破坏的皮下组织部位110被示为从切口102延伸出来,并且在这种情况下包括皮下缺陷或空隙112。被破坏的皮下组织110经常由外科手术过程(例如抽脂手术)导致。被破坏的皮下组织110可以包括空隙(例如空隙112)、开放空间和各种缺陷,由于很多原因,例如允许流体聚集(这可能导致水肿),这些缺陷可能是麻烦的。如本文所使用的术语“流体”通常是指气体或液体,但是也可以包括任何其他可流动的材料,包括但不限于凝胶、胶体和泡沫。
切口102可以使用任何机械的闭合手段例如钉、缝线或粘合剂来闭合,但是在该例证性的实施方案中被示为使用缝线114来闭合。例证性的实施方案示出了在环绕切口的区域中使用的减压治疗系统100。应认识到,减压治疗系统100可以用于治疗没有相应的切口或任何其他种类的组织部位的被破坏的皮下组织110。
减压治疗系统100大体上包括盖布或创伤盖布116、歧管120以及减压子系统122。减压治疗系统100还可以包括夹紧构件118。创伤盖布116大体上由片或柔性片123形成,并且包括一个或多个第一各向同性区124和一个或多个第二各向同性区126。每个区通常是组成创伤盖布116的至少50%的区域或面积。第一各向同性区和第二各向同性区124、126被配置为向柔性片123提供各向异性的性质。因此,柔性片123可以帮助创伤盖布116主要在给定的方向伸展。换句话说,柔性片123可以沿一个方向比沿另一个不同的方向伸展得更多。如本文所使用的,伸展可以包括弹性形变和非弹性形变。这些各向异性的性质可以以多种方式实现,并且下文将从不同的厚度的使用开始进一步讨论一些例证性的实施方案。
在图1-3B的例证性的实施方案中,第一各向同性区124具有第一厚度(t1)的盖布材料,而第二各向同性区126具有第二厚度(t2)的盖布材料,并且每个第一各向同性区124的厚度大于每个第二各向同性区126的厚度(t1>t2)。因为每个第一各向同性区124的厚度(t1)大于每个第二各向同性区126的厚度(t2),所以柔性片123具有各向异性的性质,由此柔性片123在每个轴的方向上的相等的力下在第一(x)轴128的方向上比在第二(y)轴130的方向上伸展得更多。在一个例证性的实施方案中,第一厚度(t1)大于或等于第二厚度(t2)的百分之一百零五(105%),即,t1≥105%t2。在另一个例证性的实施方案中,第一厚度(t1)大于或等于第二厚度(t2)的百分之一百一十(110%),即,t1≥110%t2。第一厚度(t1)和第二厚度(t2)之间的其他关系是可能的。
实际上,通过选择合适的厚度,使用者可以选择性地控制柔性片123在其被伸展并且粘附于患者之后试图返回其最初的大小所使用的速率或力。因此,组织的平移和/或靠近的速率可以被调节。调节组织的平移和/或靠近可以用于最小化皮肤并发症例如水泡、色素沉着过多等,并帮助闭合切口102。此外,较厚的第一各向同性区124可以能够提供可以在皮下组织108中实现并且可能在治疗被破坏的皮下组织110和消除空隙112或类似物中有益的压缩力。如图2所示,第一各向同性区124可以从面向皮肤的表面132向内突出。如图3A所示,第一各向同性区124可以从柔性片123的第一表面134向外突出。如图3B所示,第一各向同性区124可以从面向皮肤的表面132和第一表面134突出。应认识到,可以采用任意数量的各向同性区作为柔性片123的部分。此外,虽然各向同性区124、126被示为彼此实质上平行,但是应认识到,区124,126可以布置成相对于彼此有不同的方向。虽然示出了两个区124、126的两个厚度(t1和t2),应当理解,可以使用许多具有变化的厚度的区来实现各向异性的性质。
创伤盖布116可以被依尺寸制造成使得其与切口102和/或被破坏的皮下组织110重叠,以便盖布延伸部分136延伸出切口102和/或被破坏的皮下组织110的外周。创伤盖布116可以由任何合适的材料形成,例如不可渗透的或半渗透的弹性材料。“弹性”意指具有弹性体的性质并且通常是指具有类似橡胶的性质的聚合物材料。更具体地,大多数弹性体具有大于100%的伸长率和相当大的回弹性。材料的回弹性是指材料的从弹性形变恢复的能力。弹性体的例子可以包括但不限于天然橡胶、聚异戊二烯、丁苯橡胶、氯丁橡胶、聚丁二烯、丁腈橡胶、丁基橡胶、乙丙橡胶、三元乙丙单体、氯磺化聚乙烯、聚硫橡胶、聚氨酯、EVA膜、共聚酯以及硅氧烷。密封上覆盖布材料可以包括硅氧烷材料、3M Tegaderm
Figure BPA00001258604800071
盖布材料、丙烯酸盖布材料(例如可从加利福尼亚州的帕萨迪纳的Avery Dennison Corporation获得的丙烯酸盖布材料)或切割盖布材料(incise drape material)。然而,应认识到,创伤盖布116可以由任何合适的材料形成。此外,第一各向同性区和第二各向同性区124、126可以由相同的盖布材料形成或由不同的盖布材料形成。各向同性区124、126可以通过共挤出工艺、模制工艺或任何其他合适的成形工艺形成。变化的厚度可以通过耦合盖布材料的没有同延的两个或更多个部分来实现。可选地,盖布材料还可以包括一个或多个合适的生物活性元素,包括但不限于抗微生物化合物或任何其他合适的生物活性元素。
夹紧构件118可以耦合于创伤盖布116。夹紧构件118可操作以将创伤盖布116耦合于患者的表皮104。此外,夹紧构件118还可以可操作以在盖布116在被伸展并且粘附于患者之后试图返回盖布116的最初的大小时传输由盖布116产生的闭合力(被传输的力在图2中被示为力矢量138)。此外,创伤盖布116和夹紧构件118共同起作用以在患者的表皮104上形成流体密封。“流体密封”或“密封”意指给定所涉及的特定的减压子系统足以将减压保持在期望的部位处的密封。夹紧构件118可以是适合于将盖布116耦合于患者的表皮104、将闭合力传输至患者的表皮104、和/或帮助在患者的表皮104上形成流体密封的任何材料。例如,夹紧构件118可以是压敏粘合剂、热活化粘合剂、密封胶带、双面密封胶带、浆糊、水解胶体、水凝胶、钩、缝线等。
在例证性的实施方案中,夹紧构件118是耦合于盖布延伸部分136的面向皮肤的表面的粘合剂层;然而,应认识到,夹紧构件118可以跨越盖布116的整个宽度。可选地,夹紧构件118可以被仅仅应用于创伤盖布116的所选择的部分,例如第一各向同性区或第二各向同性区124、126。夹紧构件118可以被形成为在创伤盖布116上分布的层或模。可选地,对于密封胶带的情况,夹紧构件118可以被应用在创伤盖布116的整个第一表面134上或在盖布延伸部分136的第一表面上。
歧管120可定位在创伤盖布116的面向皮肤的表面132与创伤床内的组织部位(例如切口102)之间,或在表皮104的完好的部分上。如本文所使用的术语“歧管”通常是指被设置成帮助将减压施加于组织部位例如切口102、将流体传送至组织部位例如切口102或从组织部位例如切口102除去流体的物质或结构。歧管120可以由许多不同的材料制成。
在一个例证性的实施方案中,歧管120由多孔的并且可渗透的泡沫状材料制造,并且更具体地,由在减压下时允许创伤流体的良好的渗透性的网状的开放气孔聚氨酯或聚醚泡沫塑料制造。一种可以使用的这样的泡沫材料是可从得克萨斯州的圣安东尼奥的Kinetic Concepts,Inc.(KCI)获得的材料。任何材料或材料的组合可用于歧管材料,假定歧管材料可操作以分布减压。歧管120通常包括将提供到组织的区域并且从所述区域除去的流体分布在歧管120周围的多个流动通道或路径。流动通道可以互相连接。歧管的例子可以包括但不限于具有被布置成形成流动通道的结构元素的工具、蜂窝状泡沫(例如开放气孔泡沫)、织物、多孔组织聚集体、以及液体、凝胶、以及包括或固化成包括流动通道的泡沫。歧管材料还可以是材料的组合或分层。例如,亲水泡沫的第一歧管层可以被布置为相邻于疏水泡沫的第二歧管层,以形成歧管材料。
在约400微米至600微米的范围内的材料的网状气孔对实施歧管功能有帮助,但是可以使用其他材料。歧管材料可以是随后被粘结到歧管材料的最初厚度的约1/3的厚度的网状泡沫。在许多可能的材料中,可以使用以下的材料:
Figure BPA00001258604800083
材料或Foamex工业泡沫(www.foamex.com)。在一些情况下,在微焊工艺中将离子银添加入泡沫中或向歧管材料添加入其他物质(例如抗微生物剂)可能是期望的。歧管材料可以是各向同性的或各向异性的。此外,歧管材料可以是生物可吸收的材料或生物可包容的(bio-includable)材料。
歧管120可以耦合于创伤盖布116。如本文所使用的,术语“耦合”包括通过单独的物体耦合并且包括直接耦合。术语“耦合”还包括两个或更多个组分,其借助于从同一片材料形成的组分中的每个而彼此连续。此外,术语“耦合”可以包括化学的(例如通过化学键)、机械的、热的或电的耦合。流体耦合意指流体在指定的部件或位置之间连通。
创伤盖布116和歧管120可以使用粘合剂例如丙烯酸粘合剂、硅酮粘合剂、水凝胶、水解胶体等耦合。可选地,创伤盖布116和歧管120可以通过热粘合、超声波焊接以及射频连接等粘结。耦合可以以各种形式发生。此外,可以向胶粘剂中加入结构,以使创伤盖布116在期望的方向上表现更多的各向异性。
减压子系统122包括减压源140,减压源140可以采取许多不同的形式。减压源140作为减压治疗系统100的一部分提供减压。如本文所使用的,“减压”通常是指小于在正在经受治疗的组织部位处的环境压力的压力。在大多数情况下,该减压将小于患者所处的大气压力。可选地,减压可以小于组织部位处的流体静压。减压可以最初在歧管120、减压导管或导管148中并且紧邻组织部位(例如切口102)产生流体流动。当围绕组织部位的流体静压接近期望的减压时,流动可能减少,并且减压可以被保持。除非另外指明,本文规定的压力的值是表压。被传送的减压可以是静态的、动态的(一致的或随机的),并且可以被连续地或间歇地传送。可操作的减压范围可以根据需要大范围地变化,但是将通常在-5mm Hg和-500mm Hg之间。可以利用各种减压源,例如可从得克萨斯州的圣安东尼奥的Kinetic Concepts,Inc.获得的V.A.C.
Figure BPA00001258604800091
治疗单元,或壁式吸入单元。减压源140也可以由便携式机械装置(例如在管中的活塞)提供,取决于使用创伤盖布123和表皮104之间的流体密封有多少泄漏。
在例证性的实施方案中,减压源140被示为具有电池盒142和罐区域144,罐区域144具有提供罐144内的流体的水平的视觉指示的窗146。插入的薄膜过滤器例如疏水的或疏油的过滤器可以散置在减压导管148与减压源140之间。
由减压源140产生的减压通过减压导管148传送至减压接驳体150或接驳体150,减压接驳体150或接驳体150可以是肘形口152。在一个例证性的实施方案中,肘形口94是可从得克萨斯州的圣安东尼奥的Kinetic Concepts,Inc.获得的
Figure BPA00001258604800092
工艺口(technology port)。减压接驳体150允许减压被传送至创伤盖布116并且在创伤盖布116和歧管120的内部部分内被实现。在该例证性的实施方案中,肘形口94穿过柔性片123延伸到歧管120,但是许多的布置是可能的。
在操作中,歧管120可以被放置为紧邻组织部位,例如切口102和/或被破坏的皮下组织110。创伤盖布116可以被放置在歧管120上,使得创伤盖布116的盖布延伸部分136延伸出切口102和/或被破坏的皮下组织110。盖布116可以被伸展至期望的长度。如上文提到的,当伸展盖布116时,第二各向同性区126可以比第一各向同性区124伸展得更多。然后,盖布延伸部分136可以通过夹紧构件118被固定于患者的表皮104,以便形成盖布116和患者的表皮104之间的流体密封。在一些情况下,夹紧构件118还可以用于在盖布116在被耦合于患者的表皮104时试图收缩时向患者的表皮104传输由盖布116产生的闭合力。如果尚未安装减压接驳体150,那么施用减压接驳体150,并且减压导管148被流体地耦合于减压接驳体150。减压导管148还流体地耦合于减压源140。然后减压源140可以被启动,使得减压被传送至创伤盖布116和歧管120的内部。
当减压被传送时,歧管120可以横向地压缩和收缩以形成半刚性的基材。可以产生很多有益的力和作用。减压被进一步地仍然通过歧管120传输,使得减压在患者的表皮104和切口102被感受到。至少在愈合过程的早期阶段,减压也可以通过切口102并且在皮下组织108中实现。减压帮助闭合缺陷,例如皮下的空隙112,并且通常向区域提供稳定性。向盖布116传送的减压还产生再次可以提供稳定性和治疗的压缩力,如由箭头154表示的。如由箭头154表示的压缩力不仅仅在表皮104的水平处;压缩力可以向下延伸得更深并且可以在皮下组织108的水平被感受到。
此外,当创伤盖布116和歧管120在减压的影响下横向地收缩时,可以产生向内的力,如由箭头156表示的,所述向内的力帮助在切口102上保持额外的闭合力并且通常可以向创伤提供额外的稳定性。因此,来自减压的由箭头156表示的向内的力和由盖布116的收缩产生的由箭头138表示的闭合力可以共同起作用,以帮助帮助闭合切口102和/或将切口102保持在实质上闭合的位置中。同时,被传送至并且通过歧管120的减压帮助从切口102除去任何渗出液和其他流体。所有这些作用可以改善组织部位例如切口102的愈合。
在手术室中施用减压治疗系统100并且允许系统100保持在患者身上直到已经发生足够的愈合可能是期望的。在这方面,可能期望,从透明材料形成创伤盖布116、歧管120和任何其他层,以允许护理提供者获得关于组织部位例如切口102的愈合的视觉线索,而不必除去盖布116。此外,应认识到,减压治疗系统100可以作为初步的创伤闭合治疗或者作为创伤闭合治疗方案的中间步骤来使用。此外,应认识到,创伤盖布116可以在没有歧管120和/或减压子系统122的情况下使用。此外,应认识到,创伤盖布116作为能够向切口102和/或被破坏的皮下组织110传送闭合力和/或压缩力的独立敷料可能是有益的。
参照图4A和4B,示出了用于治疗组织部位例如切口、被破坏的皮下组织或其他创伤的减压治疗系统200的一部分的第二个例证性的实施方案。减压治疗系统200在大多数方面与图1-3B的减压治疗系统100类似,并且在本实施方案中,部件的相关性通常通过将图1-3B中的数字调整100来表示。虽然盖布216被示为具有用于连接于减压子系统(未示出)的减压接驳体250和导管248,但是应认识到,盖布216可以也作为独立敷料使用。
创伤盖布216包括第一各向同性区224、第二各向同性区226和第三各向同性区227。第一各向同性区224比第二各向同性区226厚,并且第二各向同性区226比第三各向同性区227厚。在本实施方案中,形成各个各向同性区,使得由于在整个盖布216上施加的相等的力,由第一各向同性区224界定的区域将比由第二各向同性区226界定的区域伸展得少。应认识到,各向同性区224、226、227可以相对于彼此具有任何合适的厚度(例如第三区227可以是最厚的,等等)。此外,虽然本实施方案示出了三个各向同性区,但是应认识到,可以采用任意数量的各向同性区。各向同性区224、226、227是彼此同中心的,并且当以平面图看时是方形环形状的区域。然而,应认识到,各向同性区224、226、227不一定需要是彼此同中心的。此外,应认识到,每个各向同性区224、226,227可以具有当以平面图看时的任何合适的形状,包括但不限于圆形、椭圆形、三角形、矩形、八边形等。
在另一个例证性的实施方案中,创伤盖布216具有被界定的各向同性区224、226、227,但是各区之间的过渡可以是逐渐的。在另一个例证性的实施方案中,创伤盖布216是锥形的,使得创伤盖布216的厚度从创伤盖布216的内部部分270向创伤盖布216的边缘272逐渐地增加或逐渐地减少。因此,创伤盖布216的弹性模量在创伤盖布216的整个长度上均匀地并且逐渐地变化。在图4A和4B中,内部部分270是创伤盖布216的实质中央,虽然内部部分270可以位于在创伤盖布216的边缘272内的任何位置。
在一个实施例中,创伤盖布272可以在边缘272处较厚并且朝着内部部分270逐渐地变薄,使得中央270是创伤盖布272的最薄的部分。所得到的腔的形状可以近似于锥体,包括截锥形的形状。相反地,创伤盖布272可以在外周272处最薄并且朝着中央270逐渐地变厚,使得中央270是创伤盖布272的最厚的部分。本文所描述的创伤盖布的例证性的实施方案中的任一个——包括具有实质上平行的各向同性区的那些实施方案——都能够具有厚度或弹性模数的均匀的和逐渐的或锥形的变化,而不是具有清楚地界定的各向同性区。在各向同性区实质上彼此平行的一个实施方案中,内部部分270可以从创伤盖布216的一个边缘延伸至相对的边缘。创伤盖布216的锥形可以帮助减轻在创伤盖布216被施用到的组织部位处的应变,而且可以缓和皮肤刺激(例如水泡)。这样的锥形也可以提供期望的伸展特性以便于创伤愈合。
现在参照图5A和5B,示出了用于治疗患者身上的组织部位的减压治疗系统300的一部分的另一个例证性的实施方案。减压治疗系统300在大多数方面与图1-3B的减压治疗系统100的方面类似,并且在本实施方案中,部件的相关性通常通过将图1-3B的参考数字调整200来表示。虽然创伤盖布316被示为具有用于连接于减压子系统(未示出)的减压接驳体350和导管348,但是应认识到,创伤盖布316可以也作为独立敷料使用。
创伤盖布316包括第一各向同性区324和第二各向同性区326。第一各向同性区324由具有第一弹性模量(λ1)的材料形成并且第二各向同性区326由具有第二弹性模量(λ2)的材料形成。在例证性的实施方案中,第一弹性模量大于第二弹性模量(λ1>λ2),使得当创伤盖布316被伸展时第二各向同性区326比第一各向同性区324伸展得更多。相对于其他方向,创伤盖布316主要在一个方向伸展。例如,在一个实施方案中,创伤盖布316可以主要在实质上垂直于一个或多个延长的各向同性区324、326的方向上伸展。
通过为每个各向同性区324、326选择合适的弹性模量,使用者可以选择性地控制创伤盖布316在其被伸展并且粘附于患者之后试图返回盖布316的最初的大小所使用的速率或力。因此,组织的平移和/或靠近的速率或与组织的平移和/或靠近有关的力可以被调节。虽然例证性的实施方案示出了两个各向同性区324、326,但是应认识到,可以采用任何合适的数量的各向同性区。此外,应认识到,创伤盖布316可以包括任意数量的具有变化的弹性模量的各向同性区,或可以甚至被构造为具有遍及创伤盖布表面中的至少一个的连续可变的弹性。在一个实施方案中,与创伤盖布316的边缘最接近的各向同性区具有相对于创伤盖布316的其他各向同性区的最低的弹性模量。
在另一个实施方案中,一个或多个各向同性区可以具有与在这些区所连接的组织部位处或附近的组织的弹性模量相等或实质上相似的弹性模量。作为几个非限制性的例子,各向同性区的弹性模量可以在患者的表皮的弹性模量的百分之二十以内或在患者的皮肤的弹性模量的百分之十以内或在患者的皮肤的弹性模量的百分之五以内。使各向同性区的弹性模量与组织部位处的组织的弹性模量互相配合可以最小化施加于组织的应力或应力遮蔽(stress-shielding),并且促进愈合和最小化伤疤。此外,应认识到,各向同性区324、326可以被配置成使得它们有当以平面图看时环形的形状,并且各向同性区324、326可以或可以不被布置成使得各向同性区324、326是彼此同中心的。此外,虽然各向同性区324、326被示为具有实质上相似的厚度,但是应认识到,各向同性区324、326可以具有不同的厚度。因此,创伤盖布316的各向异性可以通过合并具有不同的弹性模量和不同的厚度的不同的区来实现。此外,创伤盖布316的厚度和模量可以沿创伤盖布316或其部分的一个或多个方向均匀地和逐渐地变小。此外,虽然各向同性区324、326被示为实质上彼此平行,但是应认识到,各向同性区324、326相对于彼此可以具有任何合适的布置。
现在参照图6A-6B,示出了用于治疗患者身上的组织部位的减压治疗系统400的一部分的另一个例证性的实施方案。减压治疗系统400通常包括创伤盖布416和一个或多个夹紧构件418。减压接驳体450和导管448可以耦合于创伤盖布416以连接到减压源(未示出),使得减压可以被传送至组织部位。然而,应意识到,创伤盖布416可以作为独立敷料使用。
创伤盖布416通常由柔性片423形成,柔性片423具有耦合于其的一个或多个各向异性构件457的柔性片423。各向异性构件457被配置为向创伤盖布416提供各向异性的性质。在本例证性的非限制性的实施例中,创伤盖布416可操作以在各个各向异性构件457之间的区域中伸展,而在各个各向异性构件457的纵轴线的方向上伸展得最少或根本不伸展。在例证性的实施方案中,各向异性构件457包括多条丝458。丝458可以由任何合适的材料形成,包括但不限于聚合物、织物、金属、复合物、弹性体等。此外,丝458可以被布置成使得它们实质上彼此平行。然而,将认识到,丝458可以具有能够向盖布416提供各向异性的性质的任何合适的布置;例如,丝可以以“茅草状(thatched)”的布置、实质上随机的布置等。在一些例证性的实施方案中,丝458也可以由额外的盖布材料形成。
丝458通过任何合适的手段被耦合于柔性片423,合适的手段包括但不限于粘合剂、机械紧固件、粘结、超声焊接等。丝458可以耦合于柔性片423的面向皮肤的表面432或第一表面434。此外,丝458可以通过诸如共挤出的工艺与柔性片423一起形成,由此丝458与柔性片423是实质上共面的。此外,虽然例证性的实施方案示出了两个各向异性构件457,但是应认识到,可以采用任意数量的各向异性构件457。此外,虽然各向异性构件457被示为实质上彼此平行,但是应认识到,各向异性构件457可以相对于彼此具有任何合适的布置。此外,应认识到,各向异性构件457可以被布置成使得它们有当以平面图看时环形的形状,并且它们可以或可以不被布置成使得它们是彼此同中心的。
虽然在本例证性的实施方案中各向异性构件457被示为包括多条丝458,但是应认识到,各向异性构件457可以具有任何合适的配置和布置。例如,各向异性构件可以包括耦合于柔性片423的粘合层。粘合层可以是或可以不是图案化的。对于各向异性构件的其他可能的配置和布置是可能的。此外,夹紧构件418与图1-3B的减压治疗系统100的夹紧构件118相同或相似。在例证性的实施方案中,夹紧构件418可以耦合于柔性片423的面向皮肤的表面432。夹紧构件418可以跨越柔性片423的整个宽度并且覆盖丝458,或可以位于柔性片423的端部附近,如图6B所示。
现在参照图7A和7B,示出了用于治疗患者身上的组织部位的减压治疗系统500的一部分的另一个例证性的实施方案。减压治疗系统500通常包括创伤盖布516和一个或多个夹紧构件518。减压接驳体550和导管548可以耦合于创伤盖布516以流体地耦合于减压源(未示出),使得减压可以被传送至组织部位。然而,将认识到,创伤盖布516可以作为独立敷料使用。
创伤盖布516通常由具有一个或多个可流体膨胀的囊560的柔性片523形成。每个可流体膨胀的囊560包括用于接纳流体以使可流体膨胀的囊560膨胀的内部室562。流体通过相应的流体供应管或导管564被供应至每个内部室562;然而,应认识到,可以配置单个流体供应管,以通过使可流体膨胀的囊560互相连接的通路(未示出)将流体传送至每个囊。流体可以从流体控制装置(未示出)传送至内部室562。流体控制装置可以是能够储存并且选择性地通过管564将流体传送至内部室562的任何合适的设备。例证性的流体控制装置包括但不限于泵、汽缸、储存器等,并且具有相应的控制机构,包括但不限于阀、夹子、调节器等。可流体膨胀的囊56可以使用任何合适的材料被膨胀,合适的材料包括但不限于空气、水、盐水、凝胶、泡沫等。
可流体膨胀的囊560被配置为向创伤盖布516提供各向异性的性质。在例证性的实施方案中,可流体膨胀的囊560借助于它们提供的刚性向创伤盖布516提供各向异性的性质,使得创伤盖布516在功能上表现得与图1-3B的创伤盖布相似,由此当张力被施加于柔性片523时,柔性片523在囊560之间的区域伸展得更多。此外,应认识到,通过控制通过流体供应管564传送的流体的体积,控制创伤盖布516的各向异性的性质可能是可能的。例如,当流体被传送至可流体膨胀的囊560时,盖布516的各向异性可以增加。通过管564传送的流体也可以变化,以提供动态的各向异性的片。可以提供控制器以响应于在创伤部位处的条件来控制流体控制装置。此外,应认识到,在伸展和施用创伤盖布516之前使可流体膨胀的囊560膨胀可以进一步增强各向异性行为。此外,一旦可流体膨胀的囊560被膨胀,它们就可以可操作以提供可以在皮下组织中实现并且可能在治疗被破坏的皮下组织和消除空隙或类似物中有益的压缩力。
可流体膨胀的囊560可以通过任何合适的手段耦合于柔性片523,合适的手段包括但不限于粘合剂、机械紧固件、粘结、超声焊接等。可流体膨胀的囊560可以耦合于柔性片523的面向皮肤的表面532或第一表面534。此外,可流体膨胀的囊560可以在其膨胀之前被形成为与柔性片523实质上共面。虽然例证性的实施方案示出了四个可流体膨胀的囊560,但是应认识到,可以采用任意数量的囊560。此外,虽然可流体膨胀的囊560被示为实质上彼此平行,但是应认识到,可流体膨胀的囊560可以相对于彼此具有任何合适的布置。此外,应认识到,可流体膨胀的囊560可以被布置成使得可流体膨胀的囊560有当以平面图看时环形的形状,并且可流体膨胀的囊560可以或可以不被布置成使得可流体膨胀的囊560是彼此同中心的。
此外,夹紧构件518与图1-3B的减压治疗系统100的夹紧构件118相同或相似。在例证性的实施方案中,夹紧构件518可以耦合于柔性片523的面向皮肤的表面532。夹紧构件518可以跨越柔性片523的整个宽度并且覆盖丝558,或可以位于柔性片523的端部附近。
在一个例证性的实施方案中,可流体膨胀的囊560通过流体供应管564使用正压力膨胀,并且当减压被供应至减压接驳体550时,可膨胀的囊560用压缩力压住患者的表皮。当减压增加时,可膨胀的囊560被拉向减压接驳体550并且从而产生闭合力。闭合力在表皮处被实现并且可以在更深的水平例如真皮处被实现。
虽然已经在某些例证性的非限制性实施方案的上下文中公开了本发明以及其优点,但是应当理解,可以作出各种改变、取代、置换和更改而不偏离由所附的权利要求限定的本发明的范围。应认识到,结合任何一个实施方案描述的特征也可以适用于任何其他实施方案。

Claims (47)

1.一种用于治疗患者身上的组织部位的减压创伤治疗系统,所述系统包括:
创伤盖布,其包括:
柔性片,其包括:
第一各向同性区、
第二各向同性区,以及
其中所述第一各向同性区和所述第二各向同性区被配置为向所述柔性片提供各向异性的伸展性质;
歧管,其用于布置在所述创伤盖布和所述组织部位之间;以及减压子系统,其用于向所述歧管传送减压。
2.根据权利要求1所述的减压创伤治疗系统,还包括耦合于所述创伤盖布的夹紧构件,并且其中所述创伤盖布和所述夹紧构件可操作以在所述组织部位上形成流体密封。
3.根据权利要求1所述的减压创伤治疗系统,还包括耦合于所述创伤盖布的夹紧构件,所述夹紧构件可操作以向患者的皮肤传输闭合力,其中所述创伤盖布和所述夹紧构件可操作以在所述组织部位上形成流体密封。
4.根据权利要求1所述的减压创伤治疗系统,其中所述第一各向同性区具有第一厚度(t1),而所述第二各向同性区具有第二厚度(t2),并且其中所述第一厚度大于所述第二厚度(t1>t2)。
5.根据权利要求1所述的减压创伤治疗系统,其中所述第一各向同性区具有第一厚度(t1),而所述第二各向同性区具有第二厚度(t2),并且其中所述第一厚度大于所述第二厚度的百分之一百零五(105%)(t1>105%t2)。
6.根据权利要求1所述的减压创伤治疗系统,其中所述第一各向同性区具有第一厚度(t1),而所述第二各向同性区具有第二厚度(t2),并且其中所述第一厚度大于所述第二厚度的百分之一百一十(110%)(t1>110%t2)。
7.根据权利要求1所述的减压创伤治疗系统,其中所述第一各向同性区具有第一厚度(t1),而所述第二各向同性区具有第二厚度(t2),其中所述第一厚度大于所述第二厚度(t1>t2),并且其中所述第一各向同性区包括至少两个耦合的盖布材料部分。
8.根据权利要求1所述的减压创伤治疗系统,其中所述第一各向同性区包括具有第一弹性模量(λ1)的第一材料;所述第二各向同性区包括具有第二弹性模量(λ2)的第二材料;并且所述第一弹性模量大于所述第二弹性模量(λ1>λ2)。
9.根据权利要求1所述的减压创伤治疗系统,其中所述第一各向同性区包括具有第一弹性模量(λ1)的第一材料;所述第二各向同性区包括具有第二弹性模量(λ2)的第二材料;所述第一弹性模量大于所述第二弹性模量(λ1>λ2);并且所述第二弹性模量(λ2)与患者的皮肤的弹性模量实质上相似。
10.根据权利要求1所述的减压创伤治疗系统,其中所述第一各向同性区包括具有第一弹性模量(λ1)的第一材料;所述第二各向同性区包括具有第二弹性模量(λ2)的第二材料;所述第一弹性模量大于所述第二弹性模量(λ1>λ2);并且所述第二弹性模量(λ2)在患者的皮肤的弹性模量的百分之十以内。
11.根据权利要求1所述的减压创伤治疗系统,其中所述第一各向同性区包括具有第一弹性模量(λ1)的第一材料;所述第二各向同性区包括具有第二弹性模量(λ2)的第二材料;所述第一弹性模量大于所述第二弹性模量(λ1>λ2);并且所述第二弹性模量(λ2)在患者的皮肤的弹性模量的百分之五以内。
12.根据权利要求1所述的减压创伤治疗系统,其中所述第一各向同性区与所述第二各向同性区是实质上平行的。
13.根据权利要求1所述的减压创伤治疗系统,其中所述第一各向同性区与所述第二各向同性区是实质上同中心的。
14.根据权利要求1所述的减压创伤治疗系统,其中所述第一各向同性区与所述第二各向同性区是实质上同中心的,并且其中所述第一各向同性区在平面图中是实质上环形的。
15.根据权利要求1所述的减压创伤治疗系统,其中所述第一各向同性区与所述第二各向同性区是实质上同中心的,并且其中所述第一各向同性区在平面图中是实质上方形环形状的。
16.根据权利要求1所述的减压创伤治疗系统,其中所述第一各向同性区包括可流体膨胀的囊。
17.一种创伤盖布,包括:
柔性片,其用于放置在组织部位上,所述柔性片包括:
第一各向同性区、
第二各向同性区,以及
其中所述第一各向同性区和所述第二各向同性区被配置为向所述柔性片提供各向异性的伸展性质。
18.根据权利要求17所述的创伤盖布,其中所述第一各向同性区具有第一厚度(t1),而所述第二各向同性区具有第二厚度(t2),并且其中所述第一厚度大于所述第二厚度(t1>t2)。
19.根据权利要求17所述的创伤盖布,其中所述第一各向同性区具有第一厚度(t1),而所述第二各向同性区具有第二厚度(t2),并且其中所述第一厚度大于所述第二厚度的百分之一百零五(105%)(t1>105%t2)。
20.根据权利要求17所述的创伤盖布,其中所述第一各向同性区具有第一厚度(t1),而所述第二各向同性区具有第二厚度(t2),并且其中所述第一厚度大于所述第二厚度的百分之一百一十(110%)(t1>110%t2)。
21.根据权利要求17所述的创伤盖布,其中所述第一各向同性区具有第一厚度(t1),而所述第二各向同性区具有第二厚度(t2),其中所述第一厚度大于所述第二厚度(t1>t2),并且其中所述第一各向同性区包括至少两个盖布材料部分。
22.根据权利要求17所述的创伤盖布,其中所述第一各向同性区包括具有第一弹性模量(λ1)的第一材料;所述第二各向同性区包括具有第二弹性模量(λ2)的第二材料;并且所述第一弹性模量大于所述第二弹性模量(λ1>λ2)。
23.根据权利要求17所述的创伤盖布,其中所述第一各向同性区与所述第二各向同性区是实质上平行的。
24.根据权利要求17所述的创伤盖布,其中所述第一各向同性区与所述第二各向同性区是实质上同中心的。
25.根据权利要求17所述的创伤盖布,其中所述第一各向同性区与所述第二各向同性区是实质上同中心的,并且其中所述第一各向同性区在平面图中是实质上环形的。
26.根据权利要求17所述的创伤盖布,其中所述第一各向同性区与所述第二各向同性区是实质上同中心的,并且其中所述第一各向同性区在平面图中是实质上方形环形状的。
27.根据权利要求17所述的创伤盖布,其中所述第一各向同性区包括可流体膨胀的囊。
28.根据权利要求17所述的创伤盖布,还包括耦合于所述柔性片的夹紧构件。
29.根据权利要求17所述的创伤盖布,还包括耦合于所述柔性片的夹紧构件,所述夹紧构件能够向患者的皮肤传输闭合力。
30.一种创伤盖布,包括:
柔性片;以及
各向异性构件,其耦合于所述柔性片并被配置为向所述柔性片提供各向异性的伸展性质,使得所述柔性片在第一方向上比在第二方向上伸展得更多。
31.根据权利要求30所述的创伤盖布,其中所述各向异性构件包括多条丝。
32.根据权利要求30所述的创伤盖布,其中所述各向异性构件包括多条丝,并且其中所述多条丝是实质上彼此平行的。
33.根据权利要求30所述的创伤盖布,其中所述各向异性构件是粘合层。
34.一种创伤盖布,包括:
柔性片;以及
可流体膨胀的囊,其耦合于所述柔性片并被配置为向所述柔性片提供各向异性的伸展性质,使得所述柔性片在第一方向上比在第二方向上伸展得更多。
35.根据权利要求34所述的创伤盖布,其中所述可流体膨胀的囊在未被膨胀时与所述柔性片是实质上共面的。
36.根据权利要求34所述的创伤盖布,还包括:
流体供应管,其在第一端流体地耦合于所述囊;以及
流体控制装置,其流体地耦合于所述流体供应管的第二端,所述流体控制装置用于选择性地向所述囊施用流体。
37.根据权利要求34所述的创伤盖布,其中所述囊能够向患者的组织提供压缩力。
38.一种创伤盖布,包括:
柔性片,其具有内部部分和边缘,所述柔性片的厚度从所述内部部分向所述边缘逐渐地变化,以向所述柔性片提供各向异性的伸展性质,使得所述柔性片在第一方向上比在第二方向上伸展得更多。
39.根据权利要求38所述的创伤盖布,其中所述内部部分是所述创伤盖布的实质中央。
40.根据权利要求38所述的创伤盖布,其中所述柔性片的弹性模量从所述内部部分向所述边缘逐渐地变化。
41.根据权利要求38所述的创伤盖布,其中所述柔性片的厚度从所述内部部分向所述边缘逐渐地增加,使得所述边缘比所述内部部分厚。
42.根据权利要求38所述的创伤盖布,其中所述柔性片的厚度从所述内部部分向所述边缘逐渐地减少,使得所述边缘比所述内部部分薄。
43.一种用于用减压处理患者身上的创伤的方法,所述方法包括以下步骤:
将歧管布置为接近所述创伤;
在所述歧管上布置各向异性创伤盖布;
将所述各向异性盖布密封于患者的表皮;
将减压源流体地耦合于所述歧管;以及
其中所述各向异性盖布包括第一各向同性区和第二各向同性区,使得所述各向异性盖布在第一方向上比在第二方向上伸展得更多。
44.一种制造创伤盖布的方法,所述方法包括以下步骤:
形成用于放置在组织部位上的柔性片,所述柔性片具有第一各向同性区和第二各向同性区;以及
其中所述第一各向同性区和所述第二各向同性区被配置为向所述柔性片提供各向异性的伸展性质。
45.根据权利要求44所述的方法,其中所述第一各向同性区具有第一厚度(t1),而所述第二各向同性区具有第二厚度(t2),并且其中所述第一厚度大于所述第二厚度(t1>t2)。
46.根据权利要求44所述的方法,其中所述第一各向同性区具有第一厚度(t1),而所述第二各向同性区具有第二厚度(t2),并且其中所述第一厚度大于所述第二厚度的百分之一百零五(105%)(t1>105%t2)。
47.根据权利要求44所述的方法,其中所述第一各向同性区包括具有第一弹性模量(λ1)的第一材料;所述第二各向同性区包括具有第二弹性模量(λ2)的第二材料;并且所述第一弹性模量大于所述第二弹性模量(λ1>λ2)。
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