For this Schedule:(a) a medical device is intended for transient use if the manufacturer intendsthe device to be used continuously for less than 60 minutes; and(b) a medical device is intended for short-term use if the manufacturer intendsthe device to be used continuously for at least 60 minutes but not more than30 days; and(c) a medical device is intended for long-term use if the manufacturer intendsthe device to be used continuously for more than 30 days.