Abstract: A device for delivering an agent that includes a housing configured to store an agent and a cone assembly at least partially received within the housing. The cone assembly including an inner wall configured to be adjacent to the agent, an outlet channel extending from the inner wall, an inlet channel, and an intermediate channel between the outlet channel and the inlet channel. The inlet channel is in fluid communication with the outlet channel via the intermediate channel. The device includes a filter disposed within the inlet channel and positioned adjacent to the intermediate channel. The filter including a plurality of pores configured to permit a fluid received by the inlet channel to pass through the intermediate channel to mix with the agent adjacent to the inner wall.