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    • 6. 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。
    • 7. 发明授权
    • Flexible tip rheolytic thrombectomy catheter and method of constructing
same
    • 柔性尖端溶解性血栓切除术导管及其构建方法
    • US5989271A
    • 1999-11-23
    • US188631
    • 1998-11-09
    • Michael J. BonnetteJohn Edward MorrisSteven E. WieselCindy M. SetumRobert C. DutcherWilliam J. Drasler
    • Michael J. BonnetteJohn Edward MorrisSteven E. WieselCindy M. SetumRobert C. DutcherWilliam J. Drasler
    • A61B17/22
    • A61B17/32037A61B2017/22045
    • A rheolytic thrombectomy catheter and method of using same to remove thrombus from a body vessel or other body cavity. The rheolytic thrombectomy catheter has a first tube with a distal open end and a second tube aligned within the first tube and having a flexible tip assembly. A tapered and flexible tip follows a guidewire within and along tortuous and difficult vasculature paths to the site of thrombus. The flexible tip assembly, includes a soft flexible tip and also includes a hard plastic shell offering structural integrity and rigid alignment between a toroidal loop and an inner body to prevent lever arm distortion and to maintain spray gap alignment for saline jet flow emanating from the toroidal loop. Saline jets dislodge, entrain, and break thrombus into pieces which are evacuated through the dual lumen tube. A construction method is also included for mounting of the toroidal loop within the hard plastic shell and attachment of the soft tapered and flexible tip with sufficient bond strength to function as intended for use.
    • 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。 所述溶解性血栓切除术导管具有第一管,所述第一管具有远端开口端,所述第二管在所述第一管内对准并且具有柔性末端组件。 锥形和柔性的尖端跟随导线,并沿着曲折和困难的脉管系统通向血栓部位。 柔性尖端组件包括软柔性尖端并且还包括硬塑料外壳,其在环形环和内部主体之间提供结构完整性和刚性对准,以防止杠杆臂变形并且保持喷射间隙对准用于从环形管发出的盐水喷射流 循环。 盐水喷射器移动,夹带并将血栓破坏成通过双腔管排出的碎片。 还包括用于将环形环安装在硬塑料外壳内的结构方法,以及软的锥形和挠性端部的附着,其具有足够的粘合强度,以达到预期的目的。