Simulation for optimal design of hand-held surgical robots

Area of Science:

• Robotics
• Minimally Invasive Surgery
• Surgical Technology

Background:

• Hand-held surgical robots are emerging tools for minimally invasive surgery, particularly laparoscopy.
• Existing robotic manipulators offer varied interfaces and dexterities, but optimal design remains undetermined.
• Key areas for improvement include user interface, control modes, and effector kinematics.

Purpose of the Study:

• To investigate and compare different interfaces, control modes, and effector kinematics for hand-held surgical robots.
• To inform the design of an effective hand-held surgical robot for laparoscopic procedures.
• To evaluate user performance and preference in simulated surgical tasks.

Main Methods:

• Development of a surgical robot simulator for evaluating interface, control, and kinematics.
• Conducting simulated suturing tasks in a virtual environment with test subjects.
• Collecting user feedback on interface usability and task performance.

Main Results:

• User preference indicated that a joystick interface is easier to use than a jointed interface.
• A 6 Degree of Freedom (DOF) effector, coupled to the robot's shaft, was found to be necessary and sufficiently dexterous.
• The chosen effector configuration enabled effective suturing at various angles.

Conclusions:

• A joystick interface is recommended for improved usability in hand-held surgical robots for laparoscopy.
• A 6 DOF effector is essential for achieving adequate dexterity in laparoscopic surgical tasks.
• The findings provide valuable insights for designing next-generation hand-held surgical robots.