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    • 28. 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。
    • 30. 发明授权
    • Cross stream thrombectomy catheter with flexible and expandable cage
    • 交叉流血栓切除导管具有弹性和可扩展的笼
    • US08475487B2
    • 2013-07-02
    • US11101224
    • 2005-04-07
    • Michael J. BonnetteEric J. ThorDaniel T. Janse
    • Michael J. BonnetteEric J. ThorDaniel T. Janse
    • A61M29/00A61B17/22
    • A61B17/320758A61B17/00234A61B17/320725A61B2017/22079A61B2017/22082A61B2017/320004A61B2217/005A61B2217/007
    • A cross stream thrombectomy catheter with a flexible and expandable cage preferably formed of nitinol for removal of hardened and aged thrombotic material stubbornly attached to the interior of a blood vessel. The cage, which can be mesh or of straight or spiral filament design, is located close to inflow and outflow orifices at the distal portion of a catheter tube and is deployed and extended at a thrombus site for intimate contact therewith and for action of a positionable assembly and subsequent rotation and lineal actuation to abrade, grate, scrape, or otherwise loosen and dislodge difficult to remove thrombus which can interact with cross stream flows to exhaust free and loosened thrombotic particulate through the catheter tube. An alternative embodiment discloses a mechanism involving a threaded tube in rotatable engagement with an internally threaded sleeve to incrementally control the deployment and expansion of the flexible and expandable cages.
    • 一种交叉流血栓切除术导管,其具有优选由镍钛诺形成的柔性和可膨胀的保持架,用于去除顽固地附着在血管内部的硬化和老化的血栓形成材料。 可以是网状或直线或螺旋丝设计的笼子位于靠近导管管的远端部分处的流入和流出孔口,并且在血栓位置部署和延伸以与其紧密接触并且用于可定位的动作 组装和随后的旋转和线性致动以磨擦,磨碎,刮擦或以其它方式松动和移除难以去除血栓,其可以与交叉流相互作用以通过导管管排出无松动和松动的血栓形成颗粒。 替代实施例公开了一种机构,其涉及可旋转地与内螺纹套筒接合的螺纹管,以递增地控制柔性和可扩展笼的展开和膨胀。