초록 ▼

A system for the controlled delivery of a desired agent to a fluid environment. A semipermeable container defines a fully enclosed cavity and is imperforate except for a plurality of pores for permitting fluid to flow from the fluid environment into the cavity. A quantity of a molecular complex is p

A system for the controlled delivery of a desired agent to a fluid environment. A semipermeable container defines a fully enclosed cavity and is imperforate except for a plurality of pores for permitting fluid to flow from the fluid environment into the cavity. A quantity of a molecular complex is positioned in the cavity. The molecular complex comprises a macromolecule that is non-diffusable with respect to the container and a desired agent complexed to the macromolecule, the agent being capable of dissociating from the macromolecule over time. The pores of the container have a larger size in relation to the agent and the container is so constructed as to permit unimpeded passage of the agent through the pores. The concentration of the agent within the cavity is controlled by the equilibrium between the molecular complex and the agent within the cavity and the active agent is deliverable by the system to the fluid environment exclusively through the plurality of pores.

대표청구항 ▼

A system for the controlled delivery of a desired agent to a fluid environment comprising: a semipermeable container defining a fully enclosed cavity and being imperforate except for a plurality of pores for permitting the flow of fluid between the fluid environment and said cavity; and a quantity o

A system for the controlled delivery of a desired agent to a fluid environment comprising: a semipermeable container defining a fully enclosed cavity and being imperforate except for a plurality of pores for permitting the flow of fluid between the fluid environment and said cavity; and a quantity of molecular complex positioned in said cavity, said molecular complex comprising a macromolecule that is nondiffusable with respect to said container and a desired agent complexed to said macromolecule, said agent being capable of dissociating from said macromolecule over time, said pores having a larger size in relation to said agent and said container being so constructed as to permit unimpeded passage of said agent through said pores, wherein the concentration of said agent within said cavity is controlled by the equilibrium between said molecular complex and said agent within said cavity and said agent is deliverable by said system to the fluid environment exclusively through said plurality of pores.