Patent ID: 8541029

Claim:
A microfiber extrudate delivery process comprising: identifying a region in an animal; medically administering a microfiber extrudate to the region in the animal, the microfiber extrudate comprising: a bio-compatible polymer matrix forming a body of the microfiber extrudate; a material arranged within the microfiber extrudate body; and an active load arranged as a discrete domain within the microfiber extrudate body; and thereafter applying exogenous stimulus to the region in the animal from outside of the animal, thereby releasing the active load from the microfiber extrudate body into the region in the animal; wherein the step of applying exogenous stimulus to the material to release the active load comprises applying an exogenous stimulus selected from the group consisting of radiofrequency excitation, microwave excitation, terahertz excitation, mid infrared excitation, near infrared excitation, visible excitation, ultraviolet excitation, x-irradiation excitation, magnetic excitation, electron beam irradiation excitation, and combinations thereof; wherein the material is a superparamagnetic iron oxide nano-particle.