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1. 发明申请

WO2004045673A2 KINK-RESISTENT ACCESS SHEATH AND METHOD OF MAKING SAME 审中-公开
标题翻译： KINK-RESISTETY ACCESS SHEATH AND METHOD OF MAKING SAME
公开(公告)号：WO2004045673A2
公开(公告)日：2004-06-03
申请号：PCT/US0336347
申请日：2003-11-12
申请人： APPLIED MED RESOURCES
发明人： BRUSTAD JOHN R , ADLPARVAR PAYAM , ALIAHMAD WASSIM R , TRAN CANH T , HILAL NABIL , PRAVONG BOUN , PINEDJIAN RAFFI S , HART CHARLES C
IPC分类号： A61B17/00 , A61B17/34 , A61M25/00 , A61M25/06 , A61M
CPC分类号： A61M25/0012 , A61B17/3415 , A61B2017/00526 , A61M25/0045 , A61M25/005 , A61M25/0662 , B29C47/0023 , B29C47/004 , B29C47/0064 , B29C47/025 , B29C47/027 , B29C53/60 , B29C61/006 , B29L2023/00
摘要： A releasable mechanism such as a cap is adapted for use with an access sheath having an elongate tube and a handle structure disposed at a proximal end of the tube. The releasable mechanism is sized and configured to fit the handle structure, which is shaped like the bell of a horn, to further facilitate use with surgical instrumentation. The releasable mechanism may operate as a separate cap that snaps onto the handle structure to provide access pathways to the sheath. The releasable mechanism may also be disposed at a proximal end of a surgical instrument to be introduced into the access sheath such that it may be interlocked with the sheath. In a method of manufacturing a kink-resistant sheath, a wire is initially coated with a plastic material, the coated wire is then wrapped around a mandrel forming a plurality of windings, and the wound coated wire is heated until the plastic material melts and bonds the windings to form a wire-reinforced sheath. The plastic material is preferably polyurethane but may be a thermoplastic, a thermoset or any plastic material having hard and/or soft durometer. The wound coated wire may be heated by capturing the windings within a shrink tube or compressing the windings in a mold and heating the windings until the sheath is formed. In another aspect of the invention, a mandrel is used as part of an extrusion process. In another aspect of the invention, another coating or outside layer could be formed over the spring reinforcement by dipping in a solvent based solution. In yet another embodiment of the invention, a braid such as a polyester braid may be used instead of or in addition to the coil spring to form a kink-resistant sheath.
摘要翻译：诸如盖的可释放机构适于与具有设置在管的近端处的细长管和手柄结构的进入护套一起使用。所述可释放机构的尺寸和构造适合于将手柄结构（其形状像喇叭的钟形）配合，以进一步便于手术器械的使用。可释放机构可以作为单独的盖子操作，该盖子卡扣在手柄结构上以提供到护套的通路。可释放机构还可以设置在外科器械的近端处以被引入入口护套中，使得其可以与护套互锁。在制造耐扭结护套的方法中，最初用塑料材料涂覆线，然后将涂覆的线缠绕在形成多个绕组的心轴上，并且加热伤口涂覆的线，直到塑料材料熔化并结合绕组形成电线增强护套。塑料材料优选为聚氨酯，但可以是热塑性塑料，热固性材料或具有硬和/或软硬度的任何塑料材料。可以通过将收缩管内的绕组捕获或压缩模具中的绕组并加热绕组直到形成护套来加热伤口涂覆的线。在本发明的另一方面，使用心轴作为挤出工艺的一部分。在本发明的另一方面，可以通过浸渍在基于溶剂的溶液中在弹簧加强件上形成另一涂层或外层。在本发明的另一个实施例中，可以使用诸如聚酯编织物的编织物代替螺旋弹簧或除了螺旋弹簧以外以形成扭结护套。

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