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Conventional endoscopic surgery has some drawbacks that can be addressed by using robots. The robotic systems used for surgery are still in their infancy. A major deficiency is the lack of haptic feedback to the surgeon. In this paper, the benefits of haptic feedback in robot-assisted surgery are discussed. A novel robotic end-effector is then described(More)
In the commercially available robot-assisted surgical systems, camera vision constitutes the only flow of data from the patient side to the surgeon side. This paper studies how various modalities for feedback of interaction between a surgical tool and soft tissue can improve the efficiency of a typical surgical task. Utilizing a haptics-enabled master-slave(More)
Providing a surgeon with information regarding contacts made between instruments and tissue during robot-assisted interventions can improve task efficiency and reliability. In this report, different methods for feedback of such information to the surgeon are discussed. It is hypothesized that various methods of contact feedback have the potential to enhance(More)
Providing a surgeon with information regarding contacts made between tools and tissue during robot-assisted interventions can improve task efficiency and reliability. It is hypothesized that various modalities of contact feedback have the potential to enhance performance in a robot-assisted minimally invasive environment. In this paper, (kinesthetic) haptic(More)
This paper is aimed at exploring the effect of force feedback on the performance of a knot-tightening task in robotics-assisted minimally invasive surgery (RAMIS). In this work, we evaluate performance during the knot-tightening task in three scenarios: without force feedback, with visual force feedback and with direct force reflection on the subject's(More)
The traffic on World Wide Web is increasing rapidly and huge amount of data is generated due to users' numerous interactions with web sites. Web Usage Mining is the application of data mining techniques to discover the useful and interesting patterns from web usage data. We apply new approach for classify User pattern using Modified naive Bayesian(More)
The WHaSP, a Wireless Hands-free Surgical Pointer system has been developed to address the challenges of providing instruction during minimally invasive surgery. A headset worn by the instructing surgeon, and tracked using infrared and inertial technologies, is used to control a pointer that is overlaid on the surgical video. The combination of inertial and(More)
A new analytical-numerical technique is proposed to design a high displacement amplification ultrasonic horn. The profile of the horn is a NURBS curve whose parameters can be optimized to attain a high displacement amplification factor. Compared to the traditional finite element-based design approach of ultrasonic horns, which is case dependent, our(More)
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