Abstract: A surgical instrument includes a rotatable electrical coupling assembly having a first part and a second part that electrically couple and rotate relative to each other. The second part is carried by and rotates with a tube collar coupled to a transducer. A portion of the transducer is inserted through an aperture of the second part, but does not contact the second part. The first part of the assembly may electrically couple to the second part via pogo pins, brush contacts, or ball bearings. Alternatively, the first part may comprise conductive channels formed in the casing. The second part may comprise a rotatable drum with a conductive trace. In some versions, one or more components may comprise MID components. In another version, the rotatable electrical coupling assembly comprises a rotatable PC board and brush contact. Further still, a circuit board may be provided with the transducer inside a transducer casing.

Abstract: An antenna system with integrated electromagnetic interference (EMI) shielded heat sink is disclosed. The system includes an antenna circuit board with a plurality of antenna or radiating elements formed on a common plane comprising a first surface. Circuit elements are placed on a second surface of the antenna circuit board. In addition, the second surface of the antenna circuits board is connected to a pocketed EMI shielding cover with individual shield pockets serving as an EMI shield and a heat sink containing a cooling fluid. At least some adjacent pockets can be in fluid communication with one another.

Abstract: Heat transfer systems and methods are provided. The heat transfer system includes an evaporator section integrated with or thermally joined to a heat dissipating system. The evaporator section is connected to a condenser section by a conduit. Together, portions of the evaporator section, the condenser section, and the conduit form a closed volume containing a heat transfer fluid. A superhydrophobic surface is present on at least a portion of the condenser section forming a part of the closed volume. The superhydrophobic surface can include a plurality of carbon nanotubes. The carbon nanotubes can be provided as a forest of carbon nanotubes extending from a rough surface.