Patent ID: 8721580

Claim:
A glaucoma drainage device comprising: an active valve configured to be located between an anterior chamber of an eye and a drainage location; wherein the active valve comprises: a housing with an open outlet end on a first end of the housing, and a needle head opening on a second end of the housing; a tube in fluid communication with the open outlet end of the housing, the tube extending from the open outlet end of the housing; an actuator located in the housing; an actuation arm located at least partially in the housing, the actuation arm coupled to the actuator; a tapered arm rigidly coupled to the actuation arm such that movement of the actuation arm results in movement of the tapered arm and the needle head, a tapered end of the tapered arm located at least partially in the tube; and a needle head coupled to the actuation arm and the tapered arm, the needle head located opposite the tapered end of the tapered arm, the needle head located at least partially within the housing at the needle head opening of the housing; a power source coupled to the active valve; and a controller coupled to the power source; wherein the controller directs power from the power source to the active valve based on a pressure.