Intuitive Surgical, Inc. provided earnings guidance for the year 2018. For the year, the company expects pro forma gross profit margin to be within a range of between 70% and 71.5% net revenue. The company is projecting a modestly lower gross profit margin in 2018, reflecting higher costs associated with new products. The company expects pro forma income tax rate to be between 20% and 22% of pretax income. The company announced that will continue to make substantive investments in several strategic areas that are poised to benefit the company over the long run. As a result, the company expects to grow 2018 pro forma operating expenses between 16% and 18% above 2017 levels and expects other income, which is comprised mostly of interest income, to total between $45 million and $55 million in 2018.