Haptic Interaction pp 231-235
Development of the Haptic Device for a Hepatectomy Simulator
In this study, a system for a hepatectomy simulator was developed. The system consists of 2 haptic devices, a visual display, a depth sensor, and a control PC. One of the haptic devices is used for left hand. A silicon rubber mock-up of the lobe of a liver is attached to the end effector of the haptic device. Another haptic device is provided for right hand, which is a mock-up of an ultrasonic aspirator. Then, the user can incises a virtual liver with it, and the mock-up is vibrated similar to a real ultrasonic aspirator. By using the depth sensor, the position of the haptic device is measured and transmitted to the PC. In the PC, simulation software, named Liversim, calculates the interference between the tip of the interface and the virtual liver. The virtual liver can be deformed, translated, or incised by the user. Image of the virtual liver is presented to the user. And the user can feel the reaction force like a real surgery through the haptic interfaces.