Growing demand for masks and other medical accessories has boosted sleep apnoea treatment maker ResMed’s second quarter revenue.

The medical device maker says its revenue increased 13 per cent to $US736.2 million ($A1.09 billion) for the second quarter of fiscal 2019/20, compared to the same time last year.

ResMed chief Mick Farrell said it was a strong December quarter.

“We are seeing continued strong customer demand for our new products, particularly in masks and accessories with another quarter of high-teens growth in that category,” he said.