The results of a new study on managing juvenile diabetes may give hope to millions of parents in this country and abroad who typically wake up several times a night to make sure their children’s blood sugar levels have not dropped into the danger zone.And the research, published Friday in The Lancet, a British medical journal, could help spur medical device companies to more quickly develop technology based on the study’s underlying concept. The study reported that a novel computer algorithm that analyzed children’s glucose levels and recommended frequent adjustments in their insulin doses was better at preventing very low glucose overnight than a standard diabetes management system. That standard system involved a continuous glucose monitor that operated separately from a preprogrammed insulin pump — an approach now used by many of the estimated three million people nationwide who have Type 1 diabetes. Type 1 diabetes, also known as juvenile diabetes, is a disease that often develops early in life and is separate from Type 2 diabetes, which often stems from obesity.