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Related Concept Videos

Cardiac Catheterization III: Left Heart Catheterization01:24

Cardiac Catheterization III: Left Heart Catheterization

Left heart catheterization is an invasive diagnostic procedure used to evaluate the function and structure of the left side of the heart. It is generally performed to diagnose and treat cardiovascular conditions such as valve abnormalities, coronary artery disease, and congenital heart defects.Diagnostic and therapeutic purposesLeft heart catheterization serves various diagnostic and therapeutic purposes, including:Assessing coronary artery bypass grafts.Evaluating coronary artery disease in...
Cardiac Catheterization II: Right Heart Catheterization01:21

Cardiac Catheterization II: Right Heart Catheterization

Right Heart Catheterization: An OverviewRight heart catheterization is an invasive diagnostic procedure that measures right-sided cardiac and pulmonary artery pressures, calculates cardiac output, and identifies intracardiac shunts. It provides detailed hemodynamic data essential for diagnosing and managing various cardiovascular conditions, such as pulmonary hypertension.Access SitesCommon access sites for right heart catheterization include the internal jugular vein in the neck region, the...

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Updated: May 8, 2026

Remote Magnetic Navigation for Accurate, Real-time Catheter Positioning and Ablation in Cardiac Electrophysiology Procedures
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Published on: April 21, 2013

Three-Degree-of-Freedom MR-Compatible Multisegment Cardiac Catheter Steering Mechanism.

Asghar Ataollahi, Rashed Karim, Arash Soleiman Fallah

    IEEE Transactions on Bio-Medical Engineering
    |August 13, 2013
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a novel, MRI-compatible cardiac catheter with a 3-DOF steering mechanism. Its unique helical design and tendon-driven system enhance precision for robotically steered and MR-guided cardiac catheterization procedures.

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    Area of Science:

    • Biomedical Engineering
    • Medical Devices
    • Robotics

    Background:

    • Cardiac catheterization requires precise navigation within the heart.
    • Existing steering mechanisms may lack MRI compatibility or dexterity.
    • Minimally invasive cardiac procedures benefit from advanced catheter technologies.

    Purpose of the Study:

    • To develop and evaluate a novel 3-DOF (Degrees of Freedom) MR-compatible cardiac catheter steering mechanism.
    • To assess the catheter's steerability, repeatability, and MRI compatibility.
    • To explore the potential for robotically steered and MR-guided cardiac catheterization.

    Main Methods:

    • A tendon-driven catheter with deflectable helical segments was designed using rapid prototyping.
    • A carbon fiber backbone and adjustable tube were incorporated to enhance control and workspace.
    • Catheter-tip trajectory and positioning repeatability were evaluated using a 5-DOF magnetic coil tracking system.
    • MRI compatibility was confirmed through experiments in a 1.5-T scanner.

    Main Results:

    • The prototype catheter demonstrated 3-DOF steering in 3-D space.
    • Positioning repeatability was experimentally validated.
    • The catheter was confirmed to be MR-compatible.
    • Adjustable stiffness and workspace extension were achieved through design features.

    Conclusions:

    • The novel helical segment design offers precise, repeatable catheter steering.
    • The MR-compatible catheter shows significant potential for advanced cardiac interventions.
    • This technology could enable safer and more effective robotically steered and MR-guided cardiac catheterization.