SINGLE-USE DEVICE FOR INJECTION OF CARTRIDGE DRUGS

摘要

The disclosed embodiment relates to an injection device that is a single patient use, disposable device containing a needle and a cartridge containing a drug, pharmaceutical product or other injectable agent. The device is initially provided in a pre-armed state in a first engagement configuration wherein the needle is separated from the septum of a cartridge. To arm the injection device, the professional urges the device from the first engagement or pre-armed configuration to a second engagement or aimed configuration wherein the needle pierces the septum and provides a sterile fluid path to the drug, pharmaceutical product or other injectable agent contained within the cartridge. The disclosed embodiment is particularly adaptable to dental anesthetic applications, as well as other medical and veterinary applications.

主权项

1. An injection device comprising:
a cartridge with a first cartridge end and a second cartridge end, the first cartridge end being closed and the second end including a cartridge plunger; a housing enclosing the cartridge, the housing including a first housing end and a second housing end; a needle hub holding a needle; an adapter with a first adapter end and a second adapter end, the first adapter end engaging the first cartridge end and the first housing end, and the second adapter end slidably engaging the needle hub, wherein engagement of the second adapter end and the needle hub is movable between a first engagement position and a second engagement position.