1. Articles from Maegan K. Spencer

    1-3 of 3
    1. 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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    2. Optical coherence tomography for biological imaging

      Optical coherence tomography for biological imaging

      Described herein are catheters for use with Optical Coherence Tomography (OCT) that include an optical fiber core having a first refractive index and an interface medium having a second refractive index, where the first and second refractive indexes are mismatched such that receiving electronics configured to receive optical radiation reflected from the reference interface and the target operate in a total noise range that is within 5dB of the shot noise limit. These OCT catheters may include a silicon die mirror having a reflective coating that is embedded in the interface medium. The optical fiber can be fixed at just ...

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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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    1-3 of 3
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  2. Topics in the News

    1. (3 articles) John B. Simpson
    2. (3 articles) Avinger
    3. (1 articles) British Columbia Cancer Agency
    4. (1 articles) Shanghai Jiao Tong University
    5. (1 articles) Singapore Eye Research Institute
    6. (1 articles) Simon Fraser University
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