Abstract: A surgical robotic system includes at least one eye tracking system positioned detect the direction of at least one user's gaze. Input derived from the eye tracking system may be used to enter commands to the surgical robotic system depending on the directions of the gaze detected or other aspects of the gaze such as pupil dilation or speed of eye movement.

Abstract: A decorative, self-adhesive sticker/decal removable from a peel and stick board. In one embodiment, fragrance is integrated into paint that is applied to a vinyl sheet or similar material sheet to complete the decorative aspect of the self-adhesive sticker/decal. The sticker/decal is preferably painted and shaped to depict an item having a pleasant scent and a particular scent incorporated in the paint which is associated with the item. In another embodiment, a foam strip is adhered to the sticker/decal, the foam strip carrying the scent. The scent may be refreshed by spraying the strip. In a third embodiment, a first layer is decorative and a second layer, laminated upon the decorative layer is a clear, removable, and replaceable element emanating the air freshening scent. The clear layer is made of fine plastic mesh with scented gel filling the interstices of the mesh.

Abstract: A cryosurgical instrument comprises a cooling tip operable to be cooled by a flow of a cryogenic fluid within the tip; and a fluid transfer chamber having a fluid inlet for receiving cryogenic fluid, a first fluid outlet communicating with the cooling tip for supplying cryogenic fluid to the cooling tip, and a second fluid outlet communicating with an atmospheric air vent.

Abstract: A cryosurgical instrument comprises a metal cooling tip operable to be cooled by a flow of cryogenic fluid within the tip, at least a boiling region of the tip being coated with a heat-insulating coating. The presence of the heat-insulating coating can promote nucleate boiling of the fluid rather than film boiling. Nucleate boiling within the tip provides a greater cooling efficiency of the tip than film boiling.