Lesion diameter measurement catheter and method

    公开(公告)号:US5752522A

    公开(公告)日:1998-05-19

    申请号:US435288

    申请日:1995-05-04

    申请人: Richard Murphy

    发明人: Richard Murphy

    IPC分类号: A61B5/107 A61F2/958 A61B5/103

    摘要: The invention provides methods and apparatus for determining cross-sectional dimensions of body lumens, such as the diameter of a blood vessel. According to one exemplary method, the diameter of a blood vessel is measured by first inflating a balloon catheter within the lumen until the balloon diameter matches the lumen diameter. Inflation may be at a very low pressure and be constrained by the lumen, or may alternatively be controlled by monitoring the flow within the lumen. The balloon includes at least one measurement element which indicates the expanded balloon cross-sectional area, circumference, or diameter. Optionally, the measurement element provides a fluoroscopic, radiographic, or ultrasound indication of the cross-sectional dimension. In alternative embodiments, such dimensions may be transmitted to the distal end of the catheter, or determined after deflation and removal of the catheter.

    Lesion measurement catheter and method
    5.
    发明授权
    Lesion measurement catheter and method 失效
    病变测量导管及方法

    公开(公告)号:US5860923A

    公开(公告)日:1999-01-19

    申请号:US757413

    申请日:1996-11-27

    摘要: The invention provides apparatus for determining physiological characteristics of body lumens, such as the length of a blood vessel. A catheter allows measurements of the distance between a first target location and a second target location within a lumen by aligning a first marker on a first elongate member disposed within a lumen with the first target location. A second marker on a second elongate member disposed within the lumen is aligned with the second target location. The distance between the first and second markers is then directly measured from spaced-apart calibration marks along the second member, and the measured distance corresponds to the distance between the first and second target locations.

    摘要翻译: 本发明提供了用于确定体腔的生理特征的装置,例如血管的长度。 导管允许通过将设置在内腔内的第一细长构件与第一目标位置对准第一标记,来测量第一目标位置和内腔内的第二目标位置之间的距离。 设置在内腔内的第二细长构件上的第二标记与第二目标位置对准。 然后从间隔开的校准标记沿着第二构件直接测量第一和第二标记之间的距离,并且所测量的距离对应于第一和第二目标位置之间的距离。