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Related Experiment Videos

Coronary angioscopy: a monorail angioscope with movable guide wire.

S Nanto1, T Ohara, M Mishima

  • 1Cardiovascular Division, Osaka Police Hospital, Japan.

American Journal of Cardiac Imaging
|March 1, 1991
PubMed
Summary

A novel monorail coronary angioscope effectively visualizes coronary artery stenotic lesions. This steerable guide wire angioscope achieved an 86% success rate in examining 70 coronary vessels.

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Area of Science:

  • Cardiovascular Medicine
  • Medical Devices
  • Interventional Cardiology

Background:

  • Coronary artery visualization is crucial for diagnosing stenotic lesions.
  • Existing angioscopic methods may present challenges in ease of use and visualization.
  • Advancements in catheter-based imaging are needed to improve diagnostic accuracy.

Purpose of the Study:

  • To introduce and evaluate a new monorail coronary angioscope with a movable guide wire.
  • To assess the feasibility and success rate of visualizing coronary artery segments using the new device.
  • To determine the utility of the angioscope in examining stenotic lesions in various coronary artery locations.

Main Methods:

  • A new 0.8 mm outer diameter monorail angioscope with a 0.014-in steerable guide wire was developed.

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  • The angioscope was introduced into the distal coronary artery via an 8F guiding catheter.
  • Warmed saline was injected through the guiding catheter for visualization of coronary segments.

    • Main Results:

    • The new angioscope was attempted in 70 vessels across 48 patients, with successful examination in 60 vessels (86%).
    • Visualization was successful in 86% of patients undergoing examination of both left anterior descending (LAD) and left circumflex (LCX) arteries.
    • The angioscope successfully advanced beyond diagonal or obtuse marginal branches in 85% of cases and visualized 67% of tortuous vessels.

    Conclusions:

    • The new monorail coronary angioscope with a movable guide wire is a useful tool for examining coronary artery stenotic lesions.
    • The device demonstrates high success rates and feasibility, even in challenging anatomical locations.
    • This angioscope offers a promising advancement for interventional cardiology procedures requiring detailed coronary visualization.