Patent ID: 9457034
Filing Date: 2016-10-04
CPC Classification: A61K

Claim Text:
1. A method of forming a microsphere comprising the steps of: providing a first fluid; providing a second fluid comprising magnetic particles and a material capable of forming an elastically deformable material; and mixing said first and second fluids such that the first fluid forms a core of the microsphere and remains in a fluid state in the microsphere and the second fluid forms an elastically deformable shell of the microsphere comprising at least one different material from the core of the microsphere providing a cross-linked structure, forming a solid skin for the microsphere, and comprising the magnetic particles, and the material capable of forming the elastically deformable material which exhibits an increase in permeability when distorted, wherein, in response to a magnetic field, the magnetic particles in the elastically deformable shell cause said elastically deformable shell to deform, resulting in increased permeability of the shell, thereby providing controlled release of a liquid comprising the first fluid from the core of the microsphere in accordance with a magnetic field property, the magnetic field property consisting of at least one of strength of the magnetic field, frequency of the magnetic field and the type of waveform of the magnetic field.