Empty self-injector, mechanical

An empty self-injector (mechanical) is a portable, pen-style device designed for patients or caregivers to administer subcutaneous or intramuscular injections. It requires a separate pharmaceutical cartridge (not included) and uses a dial or spring mechanism to set and deliver precise doses via a replaceable needle.

These devices are reusable and typically regulated as medical instruments, with classification and supply rules varying by jurisdiction. They must comply with safety and performance standards for mechanical injectors, though specific requirements depend on the intended use and local regulations.