Apparatus, system and methods for measuring a blood pressure gradient
    1.
    发明授权
    Apparatus, system and methods for measuring a blood pressure gradient 有权
    用于测量血压梯度的装置,系统和方法

    公开(公告)号:US09504392B2

    公开(公告)日:2016-11-29

    申请号:US14874604

    申请日:2015-10-05

    摘要: An apparatus, control system and methods are disclosed for directly measuring a blood pressure gradient, i.e. by real-time pressure measurements, with particular application for in situ measurement of transvalvular blood pressure gradients for the aortic valve and other heart valves, using minimally-invasive techniques. The apparatus takes the form of a multi-sensor assembly, enclosed within a micro-catheter or a steerable guidewire, and comprises a plurality of optical pressure sensors arranged along a length of the distal end portion, for measuring pressure simultaneously at each sensor location. For example, four MOMS optical pressure sensors, and optionally, a temperature and/or flow sensor, are incorporated into a distal end portion having a diameter of 0.89 mm or less, and preferably 0.46 mm or less. Beneficially, all sensors are optically coupled, via respective optical fibers, to an optical coupler at the proximal end of the multi-sensor apparatus, without requiring electrical connections.

    摘要翻译: 公开了一种用于直接测量血压梯度的设备,控制系统和方法,即通过实时压力测量,具体应用于主动脉瓣和其他心脏瓣膜的跨瓣血压梯度的原位测量,使用微创 技术 该装置采用封闭在微导管或可导向导丝内的多传感器组件的形式,并且包括沿着远端部分的长度布置的多个光学压力传感器,用于在每个传感器位置同时测量压力。 例如,四个MOMS光学压力传感器和任选的温度和/或流量传感器被并入到直径为0.89mm或更小,优选为0.46mm或更小的远端部分中。 有利的是,所有传感器通过相应的光纤被光耦合到多传感器装置的近端处的光耦合器,而不需要电连接。