초록 ▼

A dispensing device is disclosed for delivering a beneficial agent. The device comprises (1) a housing defining an internal space, (2) an expandable composition in the space, (3) an aqueous sensitive beneficial agent formulation in the space, and (4) at least one passageway in the housing for delive

A dispensing device is disclosed for delivering a beneficial agent. The device comprises (1) a housing defining an internal space, (2) an expandable composition in the space, (3) an aqueous sensitive beneficial agent formulation in the space, and (4) at least one passageway in the housing for delivering the beneficial agent from the dispensing device.

대표청구항 ▼

A dispensing device for delivering a beneficial agent formulation to an aqueous-fluid environment of use, wherein the dispensing device comprises: (a) wall means for surrounding and forming an internal compartment, said wall comprising in at least a part a composition pervious to the passage of an a

A dispensing device for delivering a beneficial agent formulation to an aqueous-fluid environment of use, wherein the dispensing device comprises: (a) wall means for surrounding and forming an internal compartment, said wall comprising in at least a part a composition pervious to the passage of an aqueous fluid present in the environment of use; (b) means in the compartment for absorbing and imbibing aqueous fluid into the compartment for expanding and occupying an increasing volume of the compartment; (c) a beneficial agent formulation in the compartment, said beneficial agent formulation imbibing aqueous fluid into the compartment for forming with the beneficial agent a dispensable aqueous-like formulation; (d) means in the compartment for increasing the weight of the dispensing device, said means having a density from 1 to 8 and comprising a solid unit body and positioned between the beneficial agent formulation and the means for expanding in the compartment, and wherein upon the means for expanding absorbs and imbibes aqueous fluid said means expands and pushes said means for increasing the weight of the dispensing device against said beneficial agent aqueous formulation, whereby said beneficial agent aqueous formulation is pushed into; (e) passageway means in the dispensing device for delivering the beneficial agent aqueous formulation to the environment of use.