NEST - Prefilled Automatic Pen Injector Assembly(Two-Step)

The NEST prefilled automatic pen injector assembly mainly consists of three components: a PFS, a pen body assembly, and a trigger assembly. The drug is preloaded in the syringe, which is then inserted into the pen body. The pen body protects the PFS from accidental damage and features a large viewing window for easy observation of the drug solution. Once the pen body is assembled with the trigger assembly, the spring inside the trigger assembly provides the driving force for the injection process.