A teenager who was suffering from severe altitude sickness was saved using the blood oxygen detection feature of anApple Inc. (NASDAQ:AAPL) Watch, notwithstanding the fact that the feature is prohibited in the U.S. because of a patent dispute the company has with Masimo Corporation (NASDAQ:MASI). What Happened: The 14-year-old boy was grappling with acute altitude sickness at a height of 14,000 feet in Peru. The teen’s life was saved by the blood oxygen detection feature of his father’s Apple Watch, which is banned from import into the U.S. but continues to function on devices sold before the …