Magnetically-Assisted Remote Controlled Microcatheter Tip Deflection under Magnetic Resonance Imaging

Steven W. Hetts; Maythem Saeed; Alastair Martin; Prasheel Lillaney; Aaron Losey; Erin Jeannie Yee; Ryan Sincic; Loi Do; Lee Evans; Vincent Malba; Anthony F. Bernhardt; Mark W. Wilson; Anand Patel; Ronald L. Arenson; Curtis Caton; Daniel L. Cooke

doi:10.3791/50299

Magnétique assistée à distance de déviation contrôlée Astuce Microcatheter sous imagerie par réso...

JoVE Journal
Bioengineering

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JoVE Journal Bioengineering

Magnetically-Assisted Remote Controlled Microcatheter Tip Deflection under Magnetic Resonance Imaging

Magnétique assistée à distance de déviation contrôlée Astuce Microcatheter sous imagerie par résonance magnétique

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11:27 min

April 4, 2013

DOI: 10.3791/50299-v

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Overview

This study focuses on developing a control system for enhanced steering of endovascular catheters during interventional MRI procedures. By utilizing microcatheters with electromagnets, the research aims to improve navigation efficiency in vascular environments.

Key Study Components

Area of Science

Neuroscience
Biomedical Engineering
Interventional Radiology

Background

Endovascular procedures require precise navigation of catheters.
Current methods can be limited in terms of control and efficiency.
Magnetic resonance guidance offers a potential solution for improved navigation.
Electromagnetic steering may enhance catheter maneuverability.

Purpose of Study

To develop a control system for endovascular catheter steering.
To test the effectiveness of microcatheters with electromagnets.
To evaluate navigation capabilities in simulated vascular conditions.

Methods Used

Fabrication of microcatheters with tiny electromagnets.
Development of a custom control system for remote navigation.
Testing in water baths to assess controllable deflections.
Navigation trials in phantoms simulating blood vessels.

Main Results

Predictable catheter tip deflections based on electrical current.
Successful navigation in vessel phantoms demonstrates steering ability.
Results indicate improved control over catheter positioning.
Magnetic resonance guidance enhances procedural efficacy.

Conclusions

The developed system shows promise for improved catheter navigation.
Electromagnetic steering can enhance endovascular procedures.
Further research may optimize the technology for clinical use.

Frequently Asked Questions

What is the main goal of the study?

The main goal is to develop a control system for improved steering of endovascular catheters during interventional MRI.

How are the microcatheters designed?

They are fabricated with tiny electromagnets on their tips to allow for controllable deflections.

What methods were used to test the microcatheters?

The microcatheters were tested in water baths and navigated in phantoms simulating blood vessels.

What were the main findings of the study?

The study found predictable catheter tip deflections and successful navigation in vessel phantoms.

How does this research impact endovascular procedures?

It may improve the speed and efficacy of navigation during various endovascular procedures.

What future research is suggested?

Further research may focus on optimizing the technology for clinical applications.

Courant appliqué à un micro-cathéter endovasculaire avec pointe microbobine faite par laser Tour lithographie peut atteindre déviations contrôlables en vertu de résonance (MR) de guidage magnétique, ce qui peut améliorer la vitesse et l'efficacité de la navigation de la vascularisation au cours de diverses procédures endovasculaires.

L’objectif global de l’expérience suivante est de développer et de tester un système de contrôle pour améliorer le pilotage des cathéters endovasculaires en IRM interventionnelle. Ceci est réalisé en fabriquant des microcathéters avec de minuscules électroaimants à leurs extrémités dans un deuxième temps. Les microcathéters sont fixés à un système de contrôle sur mesure pour la navigation télécommandée.

Ensuite, les microcathéters sont déviés de manière contrôlée dans des bains d’eau et navigués dans des fantômes, qui simulent des conditions dans les vaisseaux sanguins des patients. Les résultats des expériences de bain d’eau montrent des déviations prévisibles de l’extrémité du cathéter en fonction de la quantité et de la polarité du courant électrique appliqué aux micro-bobines de direction. Une navigation réussie dans des fantômes de navire démontre la capacité de direction du cathéter.

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