Modeling and experimental analysis of wire-driven continuum surgical robot.

Area of Science:

• Robotics
• Mechanical Engineering
• Medical Devices

Background:

• A novel continuum surgical robot configuration is introduced, featuring an outer layer of series-connected miniature rotating modules with orthogonal hinges.
• The inner layer consists of a superelastic central support column enabling constant curvature bending for precise motion control.

Discussion:

• The proposed design balances resistance to unconventional torsion with maintained degrees of freedom.
• Superelasticity of the inner layer facilitates predictable, constant curvature bending, simplifying motion control.
• A kinematics model is developed based on this new configuration.

Key Insights:

• The robot's layered structure enhances torsional stability and dexterity.
• The kinematic model accurately predicts robot motion, achieving an average positioning error of 2.674 mm.
• Average repetitive positioning error was 2.625 mm, demonstrating high precision.

Outlook:

• Further research can explore advanced control algorithms for complex surgical tasks.
• Integration of this design into clinical settings could improve minimally invasive procedures.
• Potential for miniaturization and adaptation for various surgical specialties exists.