A Generalized Tracking Wall Approach to the Haptic Simulation of Tip Forces During Needle Insertion

Area of Science:

• Medical Simulation
• Haptic Rendering
• Robotics

Background:

• Haptic simulation of needle insertion requires accurate needle-tissue interaction models and efficient rendering methods.
• Existing rendering methods are often oversimplified or computationally intensive, limiting their practical application.

Purpose of the Study:

• To introduce the Generalized Tracking Wall (GTW) approach, a novel haptic rendering method for needle insertion simulation.
• To accurately simulate needle-tissue interactions and force feedback without complex tissue deformation calculations.

Main Methods:

• The Generalized Tracking Wall (GTW) approach combines an energetic analysis of cutting with a contact model simulating viscoelasticity and nonlinearity.
• The method is designed to replicate various phases of needle insertion, including multi-layered tissue scenarios.

Main Results:

• Simulations demonstrated the performance and generality of the GTW approach.
• Experimental comparisons showed the GTW method's effectiveness against existing empirical techniques.

Conclusions:

• The GTW approach offers a potent tool for faithfully replicating needle insertion physics.
• This method enhances the accuracy and efficiency of haptic simulations for medical training and robotic surgery.