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公开(公告)号：US10729329B2
公开(公告)日：2020-08-04
申请号：US14969062
申请日：2015-12-15
IPC分类号： A61B5/00 , A61B5/0215
摘要： Methods and sensor delivery devices for monitoring a fluid pressure within a vascular structure, the devices including an elongated sheath sized for sliding along a guidewire, a sensor assembly including a fiber optic sensor, a housing surrounding the sensor, a first cavity between the distal end of the sensor and a distal aperture of the housing, a filler extending from at least the distal end of the housing distally and tapering inward toward the outer surface of the sheath, a second cavity in the filler with an opening at the outer surface of the filler and adjoining the distal aperture of the housing, and an optical fiber. The sensor delivery device may also include an outer layer that partially covers the second cavity with an aperture over the opening of the second cavity.
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公开(公告)号：US09241641B2
公开(公告)日：2016-01-26
申请号：US13828452
申请日：2013-03-14
IPC分类号： A61B5/0215 , A61B5/00
CPC分类号： A61B5/0084 , A61B5/02152 , A61B5/02154 , A61B5/6851 , A61B5/6852 , A61B2562/0247 , A61B2562/0266
摘要： Methods and sensor delivery devices for monitoring a fluid pressure within a vascular structure, the devices including an elongated sheath sized for sliding along a guidewire, a sensor assembly including a fiber optic sensor, a housing surrounding the sensor, a first cavity between the distal end of the sensor and a distal aperture of the housing, a filler extending from at least the distal end of the housing distally and tapering inward toward the outer surface of the sheath, a second cavity in the filler with an opening at the outer surface of the filler and adjoining the distal aperture of the housing, and an optical fiber. The sensor delivery device may also include an outer layer that partially covers the second cavity with an aperture over the opening of the second cavity.
摘要翻译： 用于监测血管结构内的流体压力的方法和传感器传送装置，所述装置包括尺寸适于沿着导丝滑动的细长护套，包括光纤传感器的传感器组件，围绕传感器的壳体，远端 所述传感器和所述壳体的远端孔口，填充物从所述壳体的至少远端向远侧延伸并朝向所述护套的外表面向内逐渐变细，所述填料中的第二腔在所述壳体的外表面处具有开口 填充物并且邻接壳体的远端孔，以及光纤。 传感器传送装置还可以包括用第二腔的开口部分地覆盖第二腔的外层。
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公开(公告)号：US11478162B2
公开(公告)日：2022-10-25
申请号：US16420353
申请日：2019-05-23
发明人： Robert F. Wilson , Todd Suchecki , Thomas M. Snyder , Alan Evans , Bryan Brutlag
IPC分类号： A61B5/0275 , G06T7/246 , G06T7/00 , G06V10/75
摘要： Embodiments for assessing flow at an anatomical region of interest are disclosed. One embodiment uses pulsed contrast media injections at a known frequency along with corresponding image data to derive a measurement of blood flow velocity at the region of interest. Another embodiment uses incremental changes in known contrast media injection flow rates to match the blood flow rate relative to one of these known contrast media injection flow rates based on the presence of a particular indicia in image data. For example, this indicia can be the flow of contrast media out from a coronary artery back into the aorta or the onset of a steady state pixel density. A further embodiment uses contrast media injections that are synchronized with the cardiac cycle. For example, contrast media injections can be synchronized with the diastolic and/or systolic phases and used to measure blood flow accordingly.
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