Towards an augmented ultrasound guided spinal needle insertion system

Area of Science:

• Medical Simulation
• Surgical Robotics
• Medical Imaging

Background:

• Percutaneous spinal interventions require precise guidance.
• Current training methods may lack realistic tactile feedback and integrated visualization.
• Developing advanced simulators is crucial for improving surgical skills and patient safety.

Purpose of the Study:

• To introduce a haptic-based simulator for ultrasound-guided percutaneous spinal interventions.
• To create a realistic training environment that combines force feedback with augmented reality visualization.

Main Methods:

• A system integrating a haptic device, camera system, and finite element model was developed.
• The finite element model simulates tissue deformation and ultrasound (US) imaging from computed tomography (CT) data.
• Haptic device position measurements ensured a steady and responsive force feedback system.

Main Results:

• The simulator successfully ran complex finite element models at high haptic rates for smooth force feedback.
• Simulated US images derived from CT volumes closely matched in vivo vertebrae images.
• The system effectively coupled haptic feedback with a tracked mannequin and CT overlay on visual feeds.

Conclusions:

• This study presents the first system combining haptic feedback, a tracked mannequin, and CT overlay for spinal intervention training.
• The developed simulator offers a realistic and effective training environment for ultrasound-guided percutaneous spinal procedures.
• This technology has the potential to significantly improve the training and proficiency of surgeons performing these interventions.