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    • 2. 发明申请
    • CATHETER WITH ADJUSTABLE COLUMN STABILITY AND METHODS FOR ITS USE
    • 具有可调节柱稳定性的导管及其使用方法
    • WO2008057839A3
    • 2008-08-07
    • PCT/US2007082889
    • 2007-10-29
    • PERCUTANEOUS SYSTEMS INCHUANG ALEXDESAI RUPESH
    • HUANG ALEXDESAI RUPESH
    • A61M25/08
    • A61M25/0043A61M2025/0063
    • CATHETER WITH ADJUSTABLE COLUMN STABILITY AND METHODS FOR ITS USE ABSTRACT OF THE DISCLOSURE The catheter includes an inner column and an outer elastic member. The inner column is bendable wherein the column strength and flexibility of the inner column are adjusted by axially tensioning the outer elastic member. The inner column comprises a helical spring, slotted or slit tube, or individual links that, when axially compressed by advancement forces or by tensioning an elastic outer sheath, assume a straight or other pre-determined geometry. The column strength and flexibility of the catheter may be adjusted during introduction of the catheter into a body lumen as necessitated by the conditions encountered, as well as made highly flexible when left in position.
    • 具有可调节柱稳定性的导管及其使用摘要的方法导管包括内柱和外弹性构件。 内柱是可弯曲的,其中内柱的柱强度和柔性通过轴向张紧外弹性构件来调节。 内柱包括螺旋弹簧,开槽或狭缝管,或单独的连接件,当通过推进力轴向压缩或通过张紧弹性外护套时,其呈现直线或其它预定几何形状。 导管的柱强度和弹性可以在将导管引入体腔时被调整,如所遇到的条件所必需的,并且当放置在适当位置时使其具有高度的柔性。