But the best thing about Intuitive Surgical is, arguably, its revenue breakdown. Throughout the 2000s, selling its high-priced but mediocre-margin da Vinci surgical system accounted for the bulk of its revenue. Nowadays, selling instruments and accessories with each procedure, along with servicing its systems, accounts for a majority of full-year revenue. These are considerably higher margin categories, which has led to earnings growth (often) outpacing sales growth.