Auto-injector

Abstract

An injection device comprising a housing to house a syringe, an activation member, a drive mechanism to, upon activation by the activation member, drive a plunger driver between a first position and a second position to operate the syringe within the housing and a damping mechanism configured to damp movement of the plunger driver in either a forward motion or a rearward motion. The plunger position may affect an amount of travel of the plunger driver before it is in contact with the plunger and the plunger is in contact with a drug within a barrel. During travel, a drive force may cause rapid acceleration of the plunger driver, and damage to the syringe or discomfort to an injection recipient when contact between the plunger driver, the syringe, and the recipient is made. Damping of the forward motion of the plunger driver reduces or overcomes the risk of this.

Dependencies are inferred from the claim text.