A surgical instrument comprising a surgical end effector that comprises a first jaw and a second jaw that is movably supported relative to the first jaw for selective movement between an open position and closed positions. The surgical instrument further comprises a closure member that is axially movable in response to closing and opening motions. The closure member comprises at least one opening cam that protrudes therefrom to movably engage a corresponding cam surface on the second jaw such that upon application of the opening motion, the at least one opening cam movably engages the corresponding cam surface to move the second jaw to an open position, even when the jaws are under a load.

A surgical instrument comprising a surgical end effector that comprises a first jaw and a second jaw that is movably supported relative to the first jaw for selective movement between an open position and closed positions. The surgical instrument further comprises a closure member that is axially movable in response to closing and opening motions. The closure member comprises at least one opening cam that protrudes therefrom to movably engage a corresponding cam surface on the second jaw such that upon application of the opening motion, the at least one opening cam movably engages the corresponding cam surface to move the second jaw to an open position, even when the jaws are under a load.

A surgical instrument comprising a surgical end effector that comprises a first jaw and a second jaw that is movably supported relative to the first jaw for selective movement between an open position and closed positions. The surgical instrument further comprises a closure member that is axially movable in response to closing and opening motions. The closure member comprises at least one opening cam that protrudes therefrom to movably engage a corresponding cam surface on the second jaw such that upon application of the opening motion, the at least one opening cam movably engages the corresponding cam surface to move the second jaw to an open position, even when the jaws are under a load.

A bipolar electrosurgical fusion/sealer and dissector is provided that is arranged to simultaneously fuse and cut tissue captured between jaws of the instrument. The jaws include particularly positioned, shaped and/or oriented electrodes along with a compressible landing pad to perform the simultaneous fusion and cutting of tissue. An electrosurgical generator is arranged to supply RF energy through the instrument and monitors a phase angle of the supplied RF energy and adjusts or terminates the supplied RF energy based on the monitored phase angle to optimally fuse and dissect the tissue.

A method, a controller, and a surgical hybrid navigation system for transferring a registration of three dimensional image data of a surgical object from a first to a second surgical navigation system are described. A first tracker that is detectable by a first detector of the first surgical navigation system is arranged in a fixed spatial relationship with the surgical object and a second tracker that is detectable by a second detector of the second surgical navigation system is arranged in a fixed spatial relationship with the surgical object. The method includes registering the three dimensional image data of the surgical object in a first coordinate system of the first surgical navigation system and determining a first position and orientation of the first tracker in the first coordinate system and a second position and orientation of the second tracker in a second coordinate system of the second surgical navigation system.

A detector system for a medical motor system includes a multi-channel redundantly-configured detection device, which is accommodated in a hand-held control device that is adapted to control the medical motor system and which is positioned to detect the actuation of an actuation device of the hand-held control device. The multi-channel redundantly-configured detection device allows the plausibility of its output signals to be checked.

A method for determining the position of a rotatable jaw of an attachment relative to a non-rotatable jaw is disclosed. The method comprises assembling the attachment to a surgical robot, rotating a first rotatable driver of the robot to align the first driver with a first rotatable drive of the attachment, and rotating a second rotatable driver of the robot to align the second driver with a second rotatable drive of the attachment. The method further comprises evaluating the amount of rotation required to align the first driver with the first drive and the amount of rotation required to align the second driver with the second drive, calculating a difference between the amount of rotation of the first driver and the amount of the rotation of the second driver, and determining the position of the rotatable jaw relative to the non-rotatable jaw based on the calculated difference.

A system for tracking a catheter in a patient. The system including a plurality of surface electrodes and a surface patch attached to the patient and a processor coupled to the plurality of surface electrodes and the surface patch. The processor determines a location of at least one of the plurality of surface electrodes, stores locations of the surface patch and the at least one of the plurality of surface electrodes, determines a three-dimensional shell shape that corresponds to a portion of the patient, determines a model of an impedance tracking field in at least a portion of the three-dimensional shell shape, injects current through one or more of the plurality of surface electrodes, fits measured voltages from the catheter to the model of the impedance tracking field to determine locations of the catheter, and provides therapy to the patient based on the locations of the catheter.

A surgical instrument comprising a surgical end effector that comprises a first jaw and a second jaw that is movably supported relative to the first jaw for selective movement between an open position and closed positions. The surgical instrument further comprises a closure member that is axially movable in response to closing and opening motions. The closure member comprises at least one opening cam that protrudes therefrom to movably engage a corresponding cam surface on the second jaw such that upon application of the opening motion, the at least one opening cam movably engages the corresponding cam surface to move the second jaw to an open position, even when the jaws are under a load.

A robotic surgical system for treating a patient is disclosed including a surgical tool movable relative to the patient and a user input device configured to remotely control the surgical tool. The surgical tool includes a shaft and an end effector. The user input device includes a base and a controller movable to effect a first control motion a second control motion. The controller includes a first accessibility mode and a second accessibility mode. The robotic surgical system further includes a control circuit configured to receive a motion control signal from the user input device, determine a controller accessibility mode, permit the first control motion in response to the motion control signal in the first accessibility mode and in the second accessibility mode and permit the second control motion in response to the motion control signal in the second accessibility mode but not the first accessibility mode.