When Nepali laborer Om Bahadur Purja sprained his leg in his remote village he would have faced a four-hour trek to the nearest medical center if not for a pioneering project to bring health care to the Himalayas.

Instead, the 60-year-old father of three received the treatment he needed in his home village thanks to the recent arrival of a drone carrying basic medicine and equipment.

"This saved me a lot of trouble, time and money," Purja said in Ramche, a Himalayan village 250 km (150 miles) northwest of the Nepali capital Kathmandu.