Robotic System With Stewart Platform and RCM Mechanism for Enhanced Precision and Safety in Non-Invasive Brain...

Area of Science:

• Robotics
• Biomedical Engineering
• Neuroscience

Background:

• Conventional robots for non-invasive brain stimulation (NIBS) use serial-link arms with high inertia and limited workspace.
• These limitations pose risks for patient safety and restrict access to target brain regions.
• Existing systems struggle to compensate for patient movement, impacting stimulation accuracy.

Purpose of the Study:

• To develop and validate a novel robotic system for enhanced accuracy and safety in non-invasive brain stimulation.
• To overcome the limitations of conventional serial-link robots in NIBS applications.
• To improve patient comfort and procedural efficiency during brain stimulation.

Main Methods:

• Integration of a Stewart platform (parallel robot) and a custom remote center of motion (RCM) mechanism.
• Low moment of inertia design for precise and safe robotic movements.
• Image-guided navigation system with a multi-stage control algorithm for optimized performance.
• Experimental validation using non-invasive brain stimulation on a customized phantom.

Main Results:

• The proposed robotic system demonstrates enhanced accuracy and safety for non-invasive brain stimulation.
• The Stewart platform and RCM mechanism provide a larger workspace and minimize collision risks.
• The system effectively compensates for patient movements, ensuring precise stimulator placement.
• Experimental tests confirmed the feasibility and effectiveness of the robotic system.

Conclusions:

• This study presents the first successful implementation of a Stewart platform and RCM mechanism-based robot for non-invasive brain stimulation.
• The novel robotic system significantly advances the accuracy and safety of NIBS procedures.
• The developed system offers a promising solution for future brain stimulation therapies, improving patient outcomes.