Patent ID: 11878156
Assignee: ANTARES PHARMA, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. An injection device for injecting a medicament in a patient comprising:
a housing having at least one retaining arm and at least one retaining rib;
a syringe coupled to the housing and radially retained relative to the housing by the at least one retaining rib, the syringe comprising a container defining a fluid chamber containing the medicament, a needle and a piston;
a needle guard slideably coupled to the housing and spring biased in a distal direction relative to the housing by a return spring;
a ram slideably coupled to the housing and spring biased in the distal direction relative to the housing by a main spring, the ram having a rod coupled to the piston, the ram having at least one lock arm;
a cap including an extension that extends through the main spring;
an initial position defined by the at least one retaining arm being disposed in a longitudinal path of the ram preventing firing of the ram;
a released position defined by the at least one retaining arm being clear from the longitudinal path of the ram allowing the ram to extend distally relative to the housing; and
a locked position defined by the at least one retaining arm being disposed in the longitudinal path of the ram and the at least one lock arm being disposed in a longitudinal path of the needle guard preventing the needle guard from being retracted relative to the housing.