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    PROCESSING UNIT AND SYSTEMS FOR ASSESSING A VESSEL
    50.
    发明公开
    PROCESSING UNIT AND SYSTEMS FOR ASSESSING A VESSEL 审中-公开

    公开(公告)号：EP3581103A1

    公开(公告)日：2019-12-18

    申请号：EP19184456.2

    申请日：2012-08-20

    申请人： Volcano Corporation ,  Medsolve Limited ,  Imperial College of Science, Technology and Medicine

    发明人： ANDERSON, David ,  BURNETT, Joseph ,  HATTANGADI, Neil ,  DAVIES, Helen Catherine Stuart ,  DAVIES, Justin

    IPC分类号： A61B5/0215

    摘要： A processing unit and systems are disclosed for assessing the severity of a stenosis in a vessel without administration of hyperemic agent. At least one instrument sized and shaped for introduction into the vessel of the patient is in communication with the processing unit, wherein the processing unit is configured to: obtain proximal pressure measurements for at least one cardiac cycle of the patient from the at least one instrument at a position proximal of the stenosis of the vessel; obtain distal pressure measurements for the at least one cardiac cycle of the patient from the at least one instrument at a position distal of the stenosis of the vessel; define a duration of a diagnostic window within the cardiac cycle of the patient by selecting a starting point and an end point, wherein the starting point is selected based on the start of the cardiac cycle and addition of a first predetermined amount of time, the start of the cardiac cycle is determined from either the proximal pressure measurements or the distal pressure measurements; and calculate a pressure ratio between the distal pressure measurements and the proximal pressure measurements obtained during the diagnostic window.