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    THERMODILUTION CATHETER SYSTEMS AND METHODS FOR DETERMINING BLOOD FLOW RATES
    1.
    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

    Applicant: BOSTON SCIENTIFIC SCIMED, INC.

    Inventor： JAMES M. ANDERSON ,  JAN WEBER ,  STEVEN J. KOCH ,  TIMOTHY S. GIRTON

    IPC: A61B5/026

    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。

    GUIDE EXTENSION CATHETER
    2.
    发明申请
    GUIDE EXTENSION CATHETER 有权
    指导延伸导管

    公开(公告)号：US20150190617A1

    公开(公告)日：2015-07-09

    申请号：US14667120

    申请日：2015-03-24

    Applicant: BOSTON SCIENTIFIC SCIMED, INC.

    Inventor： JAMES M. ANDERSON ,  HUISUN WANG ,  DEREK C. SUTERMEISTER ,  STEVEN J. KOCH ,  BENJAMIN P. GUNDALE ,  PAUL J. MILLER

    IPC: A61M25/06 ,  A61M25/00

    CPC classification number: A61M25/0662 ,  A61B17/1204 ,  A61B17/12136 ,  A61B2017/00526 ,  A61M25/0009 ,  A61M25/0052 ,  A61M25/0069 ,  A61M25/01 ,  A61M25/0105 ,  A61M25/04 ,  A61M2025/0681 ,  F04C2270/0421

    Abstract: Medical devices and methods for making and using medical devices are disclosed. An example medical device may include a guide extension catheter. The guide extension catheter may include a push member having a proximal portion with a proximal stiffness, a distal portion with a distal stiffness different from the proximal stiffness, and a transition portion disposed between the proximal portion and the distal portion. The transition portion may provide a smooth transition between the proximal stiffness and the distal stiffness. The push member may have a first outer diameter. A distal tubular member may be attached to the push member. The distal tubular member may have a second outer diameter larger than the first outer diameter.

    Abstract translation: 公开了用于制造和使用医疗装置的医疗装置和方法。 示例性医疗装置可以包括引导延伸导管。 引导延伸导管可以包括具有近端刚度的近端部分的推动构件，具有不同于近端刚度的远侧刚度的远侧部分和设置在近端部分和远端部分之间的过渡部分。 过渡部分可以在近端刚度和远侧刚度之间提供平滑的过渡。 推动构件可以具有第一外径。 远侧管状构件可以附接到推动构件。 远侧管状构件可具有大于第一外径的第二外径。

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