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    • 1. 发明授权
    • Rheolytic thrombectomy catheter and method of using same
    • 溶血性血栓切除术导管及其使用方法
    • US06224570B1
    • 2001-05-01
    • US09188633
    • 1998-11-09
    • Hieu V. LeMichael J. BonnetteJohn Edward MorrisSteven E. WieselDebra M. KozakCindy M. SetumRobert G. Dutcher
    • Hieu V. LeMichael J. BonnetteJohn Edward MorrisSteven E. WieselDebra M. KozakCindy M. SetumRobert G. Dutcher
    • A61M5178
    • A61B17/32037A61B2090/034
    • A rheolytic thrombectomy catheter and method of using same to remove thrombus from a body vessel or other body cavity. Several embodiments are disclosed. All embodiments include an outer catheter having a lumen and an inner high pressure tube of a size to enable it to be passed through the lumen of the catheter. The distal end of the inner high pressure tube extends beyond the distal end of the catheter and carries a jet cap for directing one or more jets of saline proximally toward the distal end of the catheter. In some embodiments, the catheter has a distally located inwardly directed stationary stop and the inner high pressure tube includes a distally located outwardly directed transitional stop for engaging the inwardly directed stationary stop to thereby position the jet cap at a defined distance from the distal end of the catheter. In other embodiments, a stationary stop is located at the proximal end of the catheter and a transitional stop is carried on the proximal end of the inner high pressure tube. In the embodiments having the stationary and transitional stops located proximally, the inner high pressure tube includes a flow director at its distal end. In use, thrombus is dislodged, entrained, and broken into pieces by the saline jets and evacuated proximally through the lumen of the catheter.
    • 一种溶解性血栓切除术导管及其使用方法,从身体血管或其他体腔去除血栓。 公开了几个实施例。 所有实施例包括具有内腔和内部高压管的外导管,其尺寸使其能够穿过导管的内腔。 内部高压管的远端延伸超过导管的远端,并且携带用于将一个或多个盐水向近端引导到导管的远端的喷射帽。 在一些实施例中,导管具有远侧定位的向内指向的固定止动件,并且内部高压管包括远侧定位的向外指向的过渡止动件,用于接合向内指向的固定止动件,从而将喷射盖定位在距离 导管。 在其他实施例中,静止止动件位于导管的近端处,并且过渡停止件承载在内部高压管的近端上。 在具有位于近侧的静止和过渡止动件的实施例中,内部高压管在其远端包括导流器。 在使用中,血栓被移出,夹带并通过盐水喷射器破碎成碎片,并通过导管的内腔向近端排出。
    • 4. 发明授权
    • Flexible microcatheter
    • 柔性微导管
    • US06355027B1
    • 2002-03-12
    • US09328761
    • 1999-06-09
    • Hieu V. LeJohn Edward MorrisCindy M. SetumRobert G. Dutcher
    • Hieu V. LeJohn Edward MorrisCindy M. SetumRobert G. Dutcher
    • A61M2500
    • A61M25/0054A61M25/005A61M25/0053A61M2025/0042
    • Flexible microcatheter having regions of different flexibility integrally and strategically placed along and about the length of a one-piece composite catheter tube. Distally the flexible microcatheter exhibits pronounced flexibility with respect to locations or regions of flexibility located proximally for navigation along tortuous vascular paths. Different regions of flexibility are formed by applying resins of different Shore hardness readings either singularly or in combination along and about a braid which overlies an inner resin layer. The encapsulated braid provides resistance to kinking and bending of the flexible microcatheter as well as providing for torque transmission and pushability along the length of the flexible microcatheter.
    • 柔性微导管具有不同柔性的区域,整体地并且沿着并且围绕一体式复合导管的长度有策略地放置。 远端地,柔性微导管相对于靠近曲折的血管路径导航的近端位置或柔性区域具有显着的灵活性。 不同的柔性区域通过单独或组合地施加不同邵氏硬度读数的树脂形成,并且围绕着位于内层树脂层上的编织物。 封装的编织物提供柔性微导管的扭结和弯曲的抗性,以及沿着柔性微导管的长度提供扭矩传递和推压性。