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Middle ear surgery requires micro-surgical techniques and may benefit from robotic assistance. A prototype of tele-operated system is presented. Methods to determine design specifications, kinematic structure and optimization of the micro-manipulator are described. First evaluation of the robot by a stapedial removal through the external auditory meatus in(More)
This paper proposes the distributed impedance approach as a new formulation of multiple robot systems control. In this approach, each cooperating manipu-lator is provided with its own independant impedance controller. In addition, along selected degrees of freedom , force control is achieved through an external loop, in order to improve control of the(More)
This article presents distributed impedance as a new approach for multiple robot system control. In this approach, each cooperating manipulator is controlled by an independent impedance controller. In addition, along selected degrees of freedom, force control is achieved through an external loop, to improve control of the object's internal loading.(More)
Probe-based confocal laser endomicroscopy is a promising technology for performing minimally-invasive optical biopsies. With the help of mosaicing algorithms, several studies reported successful results in endoluminal surgery. In this paper, we present a prototype for making robotized optical biopsies on a variety of organs inside the abdominal cavity. We(More)
Keywords: Active endoscope Shape memory alloys Minimal invasive surgery Sliding mode control Genetic algorithms a b s t r a c t Actual endoscopes and boroscopes, widely used in industry and in minimal invasive surgery, have considerable limitations, mainly due to their low number of degrees of freedom and their manual operation. Two different solutions for(More)
We are working towards the development of a robotic hand-held surgical device for laparoscopic interventions that enhances the surgeons' dexterity. In this paper, the kinematics of the end effector is studied. Different choices of kinematics are compared during an evaluation campaign using a virtual reality simulator to find the optimal one: the Yaw-Roll(More)
Instruments used in many types of minimally invasive procedures, in particular laparoscopy, are rigid or only limitedly flexible and some tasks like suturing are difficult to perform with them. A novel hand-held, lightweight and ergonomic mechatronic instrument is presented in this paper. The instrument has a 3-DOF roll-pitch-roll end-effector controlled(More)