Patent ID: 7780623

Claim:
A pump assembly for implantation into an anterior chamber of a human eye for controlling ocular pressure comprising: a main body with a unitary construction and formed of an elastic material into an elastic bladder, having an anterior end, a posterior end, and an interior chamber; an intake conduit having an open end, and an opposing end of said intake conduit fluidly coupled to said anterior end; an outlet conduit having an open end, and an opposing end fluidly coupled to said interior chamber at one end; a first valve means for selectively allowing fluid flow from said intake conduit to said interior chamber, a second valve means for selectively allowing fluid flow from said interior chamber into and through said drainage conduit; fluid displacement means for causing fluid flow through said main body, said fluid displacement means including said elastic bladder having elastic sidewalls biased in an expanded state where elasticity of said elastic bladder sidewalls is varied in accordance with a measured ocular pressure in said anterior chamber; whereby said elastic sidewalls are constructed and configured such that external pressure fluctuations cause deflection and/or expansion of said elastic sidewalls harvesting energy from an implantation environment and using said energy to continuously pump fluid out of the anterior chamber.