Corrugated membrane actuators

An intraocular pressure (IOP) control system for implantation in an eye of a patient, comprising:

• a drainage tube configured to convey aqueous humor from an anterior chamber of the eye;
• and
• a pressure-driven membrane valve in fluid communication with the drainage tube and including a membrane having peaks and valleys formed therein, the valve being actuatable in response to pressure differentials and the membrane being configured to control flow rates of the aqueous humor along the drainage tube by deflecting in response to pressure differentials acting on the membrane.

A method of regulating pressure through adjusting drainage from an anterior chamber of an eye with a membrane valve, comprising:

• directing fluid through a fluid flow channel formed in part by a flexible membrane shaped with at least one corrugation including a peak, a valley, and a sidewall extending at a first angle between the peak and the valley;
• modifying the amount of drainage through the membrane valve in response to pressure acting on the flexible membrane by deflecting the membrane to change the first angle to a second, different angle relative to the peak and valley, and to increase or decrease the size of the fluid flow channel in the membrane valve.