AUTOINJECTOR WITH EXTENDABLE NEEDLE PROTECTOR SHROUD

摘要

The invention provides a syringe (100) and a method for using the same. The syringe (100) includes a housing (200) having a reservoir (300) disposed therein and a plunger (400) to be received by the reservoir (300), the plunger (400) being moveable between a first plunger position and a second plunger position. The syringe (100) also includes a plunger spring (480) to urge the plunger (400) toward the second plunger position and an actuator (500) to deploy the plunger spring (480). The syringe (100) also includes a needle (600) proximate the distal end of the housing (200) displaceable from a first needle position to a second needle position, and a shroud (700) coupled with the housing (200). The shroud (700) is moveable between a retracted position and an extended position, the shroud (700) surrounding at least a portion of the needle (600) when in the extended position. The syringe (100) also includes an interlocking assembly (900), a shroud spring (800), and a locking assembly (1000) configured to inhibit movement of the shroud (700).