...the most common way to treat [sleep apnea] is for patients to wear a large and uncomfortable device, which resembles an oxygen mask, as they sleep. This device, called a CPAP, pulls the lower jaw forward enabling sleepers to breathe through their mouths. The device is unpleasant to wear, however, dries the mouth, irritates the skin on the face, and is difficult to take on and off if the patient needs to get up briefly in the night. ..[Israeli startup SleepUp] has developed a family of devices for patients suffering mild, moderate and severe sleep apnea, which are smaller, lighter,...