Method and apparatus for fractional flow reserve measurements
    9.
    发明授权
    Method and apparatus for fractional flow reserve measurements 有权
    分数流储备测量的方法和装置

    公开(公告)号:US09314584B1

    公开(公告)日:2016-04-19

    申请号:US13534864

    申请日:2012-06-27

    IPC分类号: A61M25/00 A61M25/01

    摘要: A method of determining fractional flow reserve (FFR) in a blood vessel having stenosis includes injecting fluid into the blood vessel upstream of the stenosis using a power fluid injector, measuring pressure drop across the stenosis, and calculating FFR from measured pressure drop. The injected fluid may comprise a contrast medium. Further actions may include placing a pressure sensor proximal of the stenosis, injecting fluid into the blood vessel upstream of the stenosis using the power fluid injector, and measuring pressure in the blood vessel proximal of the stenosis. The pressure sensor may then be repositioned to a position distal of the stenosis, fluid may be reinjected into the blood vessel upstream of the stenosis using the power fluid injector, and pressure may be measured in the blood vessel distal of the stenosis.

    摘要翻译: 在具有狭窄的血管中确定分数流量储备(FFR)的方法包括使用动力流体注射器将流体注入到狭窄上游的血管中,测量狭窄处的压降,以及从测量的压降计算FFR。 注入的流体可以包括造影剂。 进一步的动作可以包括将压力传感器放置在狭窄附近,使用动力流体注射器将流体注入狭窄的上游的血管,以及测量狭窄近端的血管中的压力。 压力传感器然后可以重新定位到狭窄远端的位置,流体可以使用动力流体注射器在狭窄的上游再注入到血管中,并且可以在狭窄远端的血管中测量压力。