Various systems and methods for evaluating a surgical staff are disclosed. A computer system, such as a surgical hub, can be configured to be communicably coupled to a surgical device and a camera. The computer system can be programmed to determine contextual information pertaining to a surgical procedure based at least in part on perioperative data received from the surgical device during a surgical procedure. Further, the computer system can visually determine a physical characteristic of a surgical staff member via the camera and compare the physical characteristic to a baseline to evaluate the surgical staff member.

A surgical robotic system may comprise a manipulator assembly including a manipulator arm having a distal portion. The surgical robotic system may also comprise a registration device mounted to a surgical table. The table mounted registration device includes a registration element shaped to contact with the distal portion of the manipulator arm by receiving the distal portion of the manipulator arm to define a spatial relationship between the manipulator assembly and the table mounted registration device. The distal portion of the manipulator arm moves in a plurality of degrees of freedom. The plurality of degrees of freedom is reduced by the table mounted registration device when the table mounted registration device is in contact with the distal portion of the manipulator arm. The surgical robotic system may also comprise a control system that determines the spatial relationship between the manipulator assembly and the table mounted registration device.

A method comprises receiving at least one sensor reading that indicates a position or an orientation of a manipulator arm of a manipulator assembly when a keying feature of a distal portion of the manipulator arm is in contact with and received by a key receiving feature of a registration element of a table mounted registration device mounted to a side of a surgical table between a top surface and a bottom surface of the surgical table. The distal portion of the manipulator arm is movable in a plurality of degrees of freedom. The method further comprises determining, based on the received sensor reading, a spatial relationship between the manipulator assembly and the table mounted registration device; and reducing, by the table mounted registration device, the plurality of degrees of freedom when the table mounted registration device is in contact with and receives the distal portion of the manipulator arm.

A surgical robot with a surgical robot arm and a surgical robot arm controller. The surgical robot arm has a set of joints and a joint controller. The joint controller is configured to drive a joint of the set of joints. The surgical robot arm controller has a processor and watchdog circuitry. The processor is configured to send joint driving signals to the joint controller on a communication link. The watchdog circuitry is configured to: receive sequence values from the processor; determine whether each received sequence value matches a next expected value of a predetermined sequence; and if the received sequence value does not match the next expected value of the predetermined sequence, disable the communication link between the processor and the joint controller.

Systems and methods of providing a haptic barrier for an instrument include a computer-assisted device. The computer-assisted device includes a grip input control, a repositionable arm configured to support an instrument, and one or more processors. The one or more processors are configured to detect a position of the grip input control in a first direction of a degree of freedom having In a first region, a second region, and a third region between the first and second regions; in response to determining that the detected position is in the first region, operate the instrument according to a first mode; in response to determining that the detected position is in the third region, provide a haptic barrier to resist movement of the grip input control through the third region; and in response to determining that the detected position is in the second region, operate the instrument according to a second mode.

A control system for controlling a surgical robot system, the surgical robot system comprising a surgical robot, the surgical robot comprising a base, and an arm extending from the base to an attachment for an instrument, the arm comprising a plurality of joints whereby the configuration of the arm can be altered, the control system comprising: a main controller configured to: receive communications identifying inputs from an operator of the surgical robot; generate control signals for controlling the movement of the surgical robot arm based on the inputs; and send communications to the surgical robot identifying the control signals; and a safety device situated such that communications to and from the main controller pass through the safety device, the safety device being operable to selectively filter the communications to and/or from the main controller.