Intuitive Surgical Inc (NASDAQ:ISRG) shares are trading higher in Tuesday’s after-hours session after the company reported preliminary financial results. What Happened: Intuitive Surgical said it expects fourth-quarter revenue of approximately $1.93 billion versus estimates of $1.87 billion, according to Benzinga Pro. Full-year revenue is expected to come in at approximately $7.12 billion versus estimates of $7.07 billion. Fourth-quarter da Vinci procedures grew approximately 21% year-over-year, while full-year procedures jumped about 22%. Intuitive Surgical said it placed 415 da Vinci surgica…