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    • 8. 发明授权
    • Expandable fluoropolymer device for delivery of therapeutic agents and method of making
    • 用于递送治疗剂的可扩展含氟聚合物装置和制备方法
    • US06955661B1
    • 2005-10-18
    • US09411797
    • 1999-10-01
    • Steve A. HerweckPeter H. GingrasPaul MartakosTheodore Karwoski
    • Steve A. HerweckPeter H. GingrasPaul MartakosTheodore Karwoski
    • A61F2/958A61L29/04B29C47/00B29C55/24A61M5/00
    • A61M25/1029A61L29/041A61M25/10A61M2025/0057A61M2025/105A61M2025/1075B29C47/00B29C47/0023B29C55/24B29C2049/465B29K2027/18B29L2022/022B29L2031/753B32B2305/026C08L27/18
    • A radially expandable fluid delivery device for delivering a fluid to a treatment site within the body is disclosed. The fluid delivery device is constructed of a microporous, biocompatible fluoropolymer material having a microstructure that can provide a controlled, uniform, low-velocity fluid distribution through the walls of the fluid delivery device to effectively deliver fluid to the treatment site without damaging tissue proximate the walls of the device. The fluid delivery device includes a tubular member defined by a wall having a thickness transverse to the longitudinal axis of the tubular member and extending between an inner and an outer surface. The wall is characterized by a microstructure of nodes interconnected by fibrils. The tubular member is deployable from a first, reduced diameter configuration to a second, increased diameter configuration upon the introduction of a pressurized fluid to the lumen. The tubular member includes at least one microporous portion having a porosity sufficient for the pressurized fluid to permeate through the wall. Substantially all of the nodes within the microporous portion are oriented such that spaces between the nodes form micro-channels extending from the inner surface-to the outer surface of the wall.
    • 公开了一种用于将流体输送到体内的治疗部位的可径向扩张的流体输送装置。 流体输送装置由具有微结构的微孔生物相容性含氟聚合物材料构成,微结构可以通过流体输送装置的壁提供受控的,均匀的低速流体分配,以有效地将流体输送到治疗部位,而不会损伤邻近的 设备的墙壁。 流体输送装置包括由壁限定的管状构件,其具有横向于管状构件的纵向轴线并在内表面和外表面之间延伸的厚度。 壁的特征在于通过纤维互连的节点的微结构。 当将加压流体引入内腔时,管状构件可从第一缩径直径构型展开至第二增大直径构型。 管状构件包括具有足以使加压流体渗透通过壁的孔隙的至少一个微孔部分。 基本上微孔部分内的所有节点被定向成使得节点之间的空间形成从壁的内表面延伸到外表面的微通道。