Patent ID: 8114065
Filing Date: 2012-02-14
Classification: A61K,A61M

Abstract:
1. A method of delivering a material, comprising: introducing a delivery device into an environment, the delivery device including an electromagnetically responsive control element, a fluid-containing structure containing a delivery fluid and a quantity of a primary material, the primary material being distributed between a first active form carried in the delivery fluid and a second form according to a first distribution in which the primary material has a first effective concentration in the delivery fluid equal to the concentration of the first active form in the delivery fluid, and wherein the electromagnetically responsive control element is configured to modify the distribution of primary material between the first active form and the second form within the fluid-containing structure, and a pump, the pump being activatable for pumping delivery fluid from the fluid-containing structure to a downstream location; and delivering an electromagnetic distribution control signal to the environment with signal characteristics selectively receivable by the electromagnetically responsive control element and sufficient to produce a change in the distribution of the primary material between the first active form and the second form to a second distribution within the fluid-containing structure, the primary material distributed according to the second distribution having a second effective concentration in the delivery fluid within the fluid-containing structure.