Abstract: Systems, devices, and methods are operable to track usage of a surgical instrument and modify the performance of the surgical instrument based on the prior usage of the surgical instrument. Some surgical instruments are designed to have a limited service life beginning at their first use, or a limit to their overall usage in order to ensure safe use of the sensitive instruments. However, a lack of ability to track usage characteristics when the instrument is separated from an external power supply allows for user abuse and avoidance of such safety mechanisms. Adding a battery or capacitor to the instrument may allow for an ability to track usage when the instrument is separated from an external power supply. Implementing special user prompts, device use ratios, and device use half-life upon powering down of an instrument may additionally be used to prevent circumvention of safety features.

Abstract: A method including detecting a modular surgical device within bounds of a surgical operating room, connecting the modular surgical device to a surgical hub, connecting the surgical hub to a cloud-based system, transmitting surgical data associated with a surgical procedure being performed in the surgical operating room from the modular surgical device to the surgical hub, and transmitting the surgical data from the surgical hub to the cloud-based system.

Abstract: An interactive control unit is disclosed. The interactive control unit includes an interactive touchscreen display, an interface configured to couple the control unit to a surgical hub, a processor, and a memory coupled to the processor. The memory stores instructions executable by the processor to receive input commands from the interactive touchscreen display located inside a sterile field and transmit the input commands to the surgical hub to control devices coupled to the surgical hub located outside the sterile field.

Abstract: A DC power distribution system can be configured to utilize a variable number of AC power distribution units. Installation of a converter unit in place of a PDU and resetting of associated switches permits inexpensive and rapid reconfiguration of the system without interrupting power supply to current receiving units. Techniques such as mechanical keying and sense switches minimize the possibility of human error in the reconfiguring operation.

Abstract: A power switching circuit module includes two power rails coupling independent power supplies to the input of a DC controller and test circuits to detect latent faults in power mixing devices included in the circuit.

Abstract: A power mixing apparatus for mixing current from a first and a second power rail includes a first enabling circuit to provide a first enabling signal, a second enabling circuit to provide a second enabling signal, a first inrush limiter to output a first current in response to the first enabling signal, a second inrush limiter to output a second current in response to the second enabling signal, a first open-circuiting circuit to decouple the first enabling circuit from the first inrush limiter when the first open-circuiting circuit is open-circuited, a second open-circuiting circuit to decouple the second enabling circuit from the second inrush limiter when the second open-circuiting circuit is open-circuited, a first isolation circuit to isolate the first inrush limiter from the second current, a second isolation circuit to isolate the second inrush limiter from the first current, and a direct-current converter to convert the first and the second current in response to the first enabling signal and in respo