THERMODILUTION CATHETER SYSTEMS AND METHODS FOR DETERMINING BLOOD FLOW RATES
    23.
    发明申请
    THERMODILUTION CATHETER SYSTEMS AND METHODS FOR DETERMINING BLOOD FLOW RATES 审中-公开
    热过滤系统和确定血液流量的方法

    公开(公告)号:US20140323887A1

    公开(公告)日:2014-10-30

    申请号:US14261139

    申请日:2014-04-24

    Abstract: Catheter systems and methods for determining blood flow rates based on temperature measurements by thermodilution. The catheter may include a fluid lumen defined between inner and outer tubular members for delivering an indicator fluid, and a guidewire lumen defined by the inner tubular member. The catheter may include fluid infusion openings at the distal end region of the outer tubular member configured to permit the indicator fluid to exit the catheter from the fluid lumen, and a fluid hole located at the distal end region of the inner tubular member configured to permit the indicator fluid to pass from the fluid lumen into the guidewire lumen. A temperature sensor positioned on a guidewire may be positioned within the guidewire lumen to measure the temperature of the indicator fluid entering the guidewire lumen through the fluid hole. A blood flow rate may be calculated based on the measured temperature.

    Abstract translation: 导管系统和基于通过热稀释的温度测量来确定血液流速的方法。 导管可以包括限定在用于输送指示剂流体的内部和外部管状构件之间的流体腔,以及由内部管状构件限定的导丝腔。 导管可以包括在外管状构件的远端区域处的流体输注开口,其构造成允许指示器流体从流体腔排出导管,以及位于内管状构件的远端区域处的流体孔,构造成允许 所述指示液从所述流体腔传递到所述导丝管腔中。 定位在导丝上的温度传感器可以定位在导丝管腔内以测量通过流体孔进入导丝管腔的指示剂流体的温度。 可以基于测量的温度计算血流速率。

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