prefilled pen

noun

variants or prefilled pen

ˈprē-ˌfild-ˈpen 

plural prefilled pens or pre-filled pens

: a medical device that is used for injecting a preloaded dose of a drug and that typically consists of a cartridge prefilled with several doses of medication, a dial for selecting the appropriate dose, a single-use needle which is replaced after each use, and a button for dispensing the drug once the needle is inserted

There is … a higher risk of dosing errors when patients are using multi-dose vials and syringes rather than prefilled pens, especially if they are not carefully counseled.

—Betsy Dovec, quoted at MailOnline

A bottle of insulin can cost about $300 or more for a month's supply. Pre-filled pens that are certainly helpful for people with arthritic hands and vision issues can cost even more.

—Richard Davis

compare auto-injector, prefilled syringe

Word History

First Known Use

1997, in the meaning defined above