Abstract: Suction devices and methods for fine needle aspiration. Certain embodiments include an inner tubular member and a piston disposed within an outer cylinder. In particular embodiments, a vacuum is created in a portion of the interior volume of the outer cylinder and in the interior volume of the inner tubular member when the piston is moved toward the distal end of the inner tubular member.

Abstract: A device for fine needle aspiration comprising: an inner tubular member; an outer tubular member disposed around the inner tubular member, wherein the outer tubular member comprises a plurality of slots; an outer housing disposed around the outer tubular member; a biasing member disposed between the outer tubular member and the outer housing. The device also comprises a rod coupled to the inner tubular member, where the rod extends through the outer tubular member and the rod is configured to be moved from a first slot in the plurality of slots to a second slot in the plurality of slots.