1. Articles from Priyanshu Gupta

    1-6 of 6
    1. Chronic total occlusion crossing devices with imaging

      Chronic total occlusion crossing devices with imaging

      An imaging device includes a hollow flexible shaft having a central longitudinal axis and an imaging window therein. An optical fiber extends within the hollow flexible shaft substantially along the central axis. A distal tip of the optical fiber is attached to the hollow flexible shaft and aligned with the imaging window so as to transfer an optical coherence tomography signal through the imaging window. A handle is attached to the hollow flexible shaft configured rotate the hollow flexible shaft at speeds of greater than 1,000 rpm.

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      Mentions: Avinger
    2. Balloon atherectomy catheters with imaging

      Balloon atherectomy catheters with imaging

      An atherectomy catheter includes an elongate flexible catheter body, a cutter near the distal end of the catheter body, a drive shaft connected to the cutter and extending within the catheter body, an imaging element near the distal end of the catheter body and an imaging shaft connected to the imaging element and extending within the catheter body. The cutter and the imaging element are mechanically isolated, and the drive shaft is configured to be axially translated relative to the imaging shaft and the catheter body.

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    3. Atherectomy catheters with longitudinally displaceable drive shafts

      Atherectomy catheters with longitudinally displaceable drive shafts

      Described herein are atherectomy catheters, systems and methods that include longitudinally displaceable drive shafts that drive actuation of one or more cutters at the distal end of the catheter. The catheters described herein may include one or more imaging sensors for imaging before, during or after cutting tissue. In some variations the imaging sensor may be rotated around the perimeter of the catheter independently of the rotation of the cutter. Also describe herein are imaging catheters that may be used without cutters.

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    4. Atherectomy catheter drive assemblies

      Atherectomy catheter drive assemblies

      A drive assembly for driving an imaging catheter has a rotatable fiber and a rotatable drive shaft. The drive assembly includes a fiber optic rotating junction and a motor configured to rotate the rotatable portion of the fiber optic rotating junction. In some embodiments, the drive assembly includes a sensor configured to detect a rotational position of the fiber optic rotating junction and a processor configured to obtain the detected rotational position and stop the motor only when the fiber optic rotating junction is in a predetermined rotational position. In some embodiments, the motor includes a hollow shaft through which ...

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      Mentions: Avinger
    5. Chronic Total Occlusion Crossing Devices With Imaging

      Chronic Total Occlusion Crossing Devices With Imaging

      An imaging device includes a hollow flexible shaft having a central longitudinal axis and an imaging window therein. An optical fiber extends within the hollow flexible shaft substantially along the central axis. A distal tip of the optical fiber is attached to the hollow flexible shaft and aligned with the imaging window so as to transfer an optical coherence tomography signal through the imaging window.

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      Mentions: Avinger
    6. Occlusion-crossing devices, imaging, and atherectomy devices

      Occlusion-crossing devices, imaging, and atherectomy devices

      The present invention relates to: (1) guidewire support/placement catheters; (2) support/placement catheters with imaging; (3) atherectomy catheters, (4) atherectomy catheters with imaging, (5) occlusion crossing catheters, and (6) occlusion crossing catheters with imaging as well as methods for using them to treat disorders (and particularly peripheral artery disease) and systems including them.

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    1-6 of 6
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