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    • 10. 发明申请
    • System for stent placement in a vasculature bifurcation
    • 用于支架放置在脉管系统分叉中的系统
    • US20050209669A1
    • 2005-09-22
    • US10791975
    • 2004-03-03
    • John Kao
    • John Kao
    • A61B8/12A61F2/00A61F2/02A61F2/06A61F2/84
    • A61B8/12A61F2/856A61F2/954A61F2/958A61F2250/0002A61F2250/008
    • A positioning system for use in placing a stent at a vascular bifurcation includes an elongated catheter having an inflatable balloon mounted at its distal end. With the balloon deflated, the catheter/balloon assembly is engageable with the stent allowing the stent to be advanced through the vasculature to the bifurcation. At the bifurcation, the balloon can be selectively inflated to release the stent. A plurality of individually activatable, acoustic transducer crystals is mounted on the catheter at the proximal end of the stent. Each crystal can be selectively activated from an extracorporeal location to radiate an acoustic signal that is directed toward a vessel wall where it is reflected, creating an acoustic return signal. The return signal is then received by the respective transmitting crystal and converted to an electrical signal. The electrical signals are then used to determine a spatial relationship between the stent and the bifurcation.
    • 用于将支架置于血管分叉处的定位系统包括具有安装在其远端处的可充气气囊的细长导管。 当气囊放气时,导管/球囊组件可与支架接合,允许支架通过脉管系统前进到分叉。 在分叉处,气囊可以选择性地充气以释放支架。 多个可单独激活的声换能器晶体安装在支架近端处的导管上。 每个晶体可以从体外位置选择性地激活,以辐射指向反射的血管壁的声信号,产生声返回信号。 然后,返回信号由相应的发射晶体接收并转换成电信号。 然后使用电信号来确定支架与分叉之间的空间关系。