会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 8. 发明授权
    • Composite vascular catheter
    • 复合血管导管
    • US5176661A
    • 1993-01-05
    • US776726
    • 1991-10-15
    • Philip C. EvardTimothy R. MacholdBojana Spahic
    • Philip C. EvardTimothy R. MacholdBojana Spahic
    • A61M25/00A61M29/02
    • A61M25/104A61M25/0053
    • An improved vascular catheter having a tubular member of composite structure with a tubular substrate and a resin-impregnated fibrous covering extending over a substantial part of the length thereof. The tubular substrate which is longitudinally flexible but relatively inextendible, is preferably polyimide tubing with a lubricious coating on the inner surface thereof defining an inner lumen. The fibrous covering is preferably epoxy-impregnated aramid or polyester (Dacron) multi-filament fibers. The strands are is snugly wrapped around the tubular substrate and then impregnated with a suitable resin. One or more of the strands in the distal portion are at an angle with respect to the longitudinal axis of the tubular substrate between about 20.degree. and about 45.degree. greater than the angle of one or more strands in the proximal portion. Individual strand wraps in the distal portion are at an angle of about 60.degree. to about 85.degree. and strand wraps in such as the proximal portion are at an angle of about 30.degree. to about 60.degree.. The composite tubular member is preferably utilized in balloon dilatation catheters used in angioplasty procedures.
    • 一种改进的血管导管,其具有复合结构的管状构件,其具有管状基底和在其长度的大部分上延伸的树脂浸渍的纤维覆盖物。 纵向柔性但相对可延伸的管状基底优选为聚酰亚胺管,其内表面上具有限定内腔的润滑涂层。 纤维覆盖物优选为环氧树脂浸渍的芳族聚酰胺或聚酯(涤纶)复丝纤维。 股线被紧密地缠绕在管状基底上,然后用合适的树脂浸渍。 远侧部分中的一条或多条股线相对于管状基材的纵向轴线处于与近端部分中的一条或多条股线的角度大约20度至大约45度之间的一角度。 远侧部分的单股股卷绕约60度至约85度的角度,并且诸如近端部分的股线卷绕成大约30度至大约60度的角度。 复合管状构件优选用于血管成形术中使用的球囊扩张导管中。