Abstract: An ultrasonic surgical device is disclosed including a surgical tool including a proximal transducer mounting portion defining a surface, a distal end effector end, and a waveguide disposed therebetween, the waveguide extending along a longitudinal axis. The ultrasonic surgical device further includes a transducer is in mechanical communication with the surface of the transducer mounting portion. The transducer is configured to operate in a D31 mode with respect to the longitudinal axis of the waveguide. Upon activation by an electrical signal having a predetermined frequency component, the transducer is configured to induce a standing wave in the surgical tool to cause the end effector to vibrate, the standing wave having a wavelength proportional to the predetermined frequency component of the electrical signal.

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: This disclosure relates to a closure device for a roof drain comprising a generally inverted cup-shaped cap having an apex portion and a peripheral skirt terminating in a peripheral edge carrying peripheral sealing means for engaging an area outboard of a roof drain, and a threaded rod passing through the apex portion for rotationally connecting the closure device to a roof drain closure whereby upon rotation of the threaded rod the peripheral sealing means will be brought into contact with a peripheral area outboard of a roof drain to form a seal for retaining a predetermined quantity of water upon a roof for fire prevention purposes.