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Related Experiment Video

Updated: Dec 10, 2025

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

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

Published on: April 4, 2013

Remotely Actuated Needle Driving Device for MRI-Guided Percutaneous Interventions.

Di Wu^1,2, Gang Li¹, Niravkumar Patel¹

¹Laboratory for Computational Sensing and Robotics, Johns Hopkins University, Baltimore, MD 21218, USA.

... International Symposium on Medical Robotics. International Symposium on Medical Robotics

|September 1, 2020

Summary

This study presents a novel MRI-compatible needle driver for precise lower back pain injections. The remotely actuated device enhances safety and accuracy during MRI-guided procedures.

Keywords:

MRI-guided intervention beaded chain transmission needle driving device pain management remote actuation

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Last Updated: Dec 10, 2025

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Area of Science:

Medical Devices
Interventional Radiology
Magnetic Resonance Imaging (MRI)

Background:

MRI-guided interventions require specialized tools for precise needle placement.
Minimizing artifacts and patient-side hardware is crucial for effective MRI procedures.
Existing devices may have limitations in remote actuation and MRI compatibility.

Purpose of the Study:

To introduce a remotely actuated, MRI-compatible needle driving device for lower back pain injections.
To enable precise needle manipulation within a closed-bore MRI scanner.
To reduce the weight and imaging noise associated with the needle driver.

Main Methods:

Development of a 2 degrees of freedom (DOF) needle driver and a remote actuation box.
Utilizing a beaded chain transmission for remote control within the MRI scanner.
Incorporating a mode switch for manual and motorized operation and a mechanical hard stop for safety.

Main Results:

The device allows for remote needle manipulation by an interventional radiologist.
The design minimizes patient-side hardware weight and potential imaging noise.
Bench-top accuracy evaluation in a phantom study showed a mean needle placement error of less than 1 mm.

Conclusions:

The novel remotely actuated MRI-compatible needle driving device offers a safe and accurate solution for lower back pain injections.
This technology has the potential to improve MRI-guided interventional procedures.
The design addresses key challenges in MRI compatibility and remote operation.