Hypo sprays are a type of injectable device commonly used in science fiction stories. They are often seen as a futuristic alternative to traditional syringes, and are often used to quickly administer medicine or other substances directly into the body. Despite their prevalence in science fiction, they are not commonly used in real-world medical settings. However, there are a variety of other words and phrases that are frequently used to describe similar medical devices, including injection pens, auto-injectors, and pre-filled syringes. These terms all describe devices that allow for quick and easy injection of medication, and are commonly used by individuals with chronic medical conditions like diabetes or multiple sclerosis.