What type of system is used for injection in a syringe that is prefilled with medication?

The cartridge system is specifically designed to house medication in a prefilled syringe, which enhances convenience and efficiency for both healthcare professionals and patients. In this setup, the medication is contained within a sealed cartridge that can be quickly inserted into a syringe. This allows for easy and accurate delivery of the medication without the need for multiple handling or transferring of the drug, which is especially beneficial in ensuring sterile practices and reducing waste.

The other systems mentioned do not pertain specifically to prefilled syringes. The vial system typically requires the user to draw medication from a glass or plastic vial, which can involve additional steps and the potential for the introduction of contaminants. The single-use system generally refers to syringes designed for one-time use, often without the prefilled advantage. Lastly, the multi-dose system typically indicates vials containing medication suitable for multiple doses, which again does not align with the concept of a prefilled syringe. Hence, the cartridge system stands out as the correct answer for prefilled syringe contexts.