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    • 8. 发明授权
    • Pressure sensing catheter
    • 压力传感导管
    • US08192368B2
    • 2012-06-05
    • US12480307
    • 2009-06-08
    • David M. WoodruffPhillip M. Leopold
    • David M. WoodruffPhillip M. Leopold
    • A61B5/00
    • A61M25/1036A61B5/205A61M25/1011A61M2025/0002A61M2205/3331Y10T29/49826
    • This invention provides a pressure sensing catheter, and method for using the same, which eliminates the practitioners' need to fill the catheter with fluid manually prior to insertion, and thereby increases the accuracy and ease of the overall pressure-sensing procedure. The illustrative catheter includes, in its proximal end, a transducer base or housing that is permanently attached to the catheter shaft. The base includes, inserted thereinto, one or more miniaturized pressure transducer assemblies, which are in fluid communication with corresponding pressure lumens that extend down the shaft and are in communication with one or more predetermined balloons by discrete channels or ports, which provide a fluid passage between the interior space of the balloon and the corresponding pressure lumen. The integral assembly includes a predetermined, previously installed charge of fluid that extends from the transducer, through the corresponding pressure lumen and into the interior volume of the sensing balloon. The charge of fluid has been made free of any air bubbles at the point of manufacture, and is delivered fully charged, so that maximum sensing accuracy and minimum setup time are achieved. In alternate embodiments the catheter can include a fluid infusion/flushing lumen and port interconnected to a proximal fluid connection.
    • 本发明提供了一种压力感测导管及其使用方法,其消除了在插入之前从业人员手动填充导管的需要,从而提高了整体压力感测过程的准确性和易用性。 说明性导管在其近端包括永久地附接到导管轴的换能器基座或壳体。 基座包括插入其中的一个或多个小型化的压力换能器组件,其与相应的压力腔流体连通,所述相应的压力腔在轴下方延伸并且通过离散的通道或端口与一个或多个预定气囊相连通, 在气球的内部空间和相应的压力腔之间。 一体式组件包括预先安装的从换能器延伸的预先安装的流体,通过相应的压力腔并进入感测气囊的内部空间。 在制造过程中,液体的充气已经没有任何气泡,并被完全充电,从而实现了最大的感测精度和最小的建立时间。 在替代实施例中,导管可以包括流体输注/冲洗腔和互连到近端流体连接的端口。