Patent ID: 7090668

Claim:
An implantable, time-released substance delivery device, comprising: a casing having an exterior surface; an access tube connected to and extending away from the exterior surface of the casing; a plurality of pores disposed on an exterior surface of the substance deliver device: an interior chamber enveloped by the substance delivery device, wherein the enveloped interior chamber is constructed to hold a substance and wherein the substance delivery device is formed of a non-corrosive material; a perforable membrane, which when punctured by a needle will subsequently re-seal to maintain a fluid barrier, wherein the perforable membrane is constructed to facilitate multiple penetrations by a needle therethrough and into the interior chamber while maintaining a fluid seal after each penetration; and plurality of excretion tubes disposed within the casing, each of the plurality of excretion tubes fluidly connecting the interior chamber to one of the plurality of pores.