Magnetically-Controllable Delivery System for Therapeutic Agents
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Abstract
A magnetic delivery system for delivering a magnetizable particle to a location in a body, the device includes a magnetizable object implanted in the body, wherein the magnetizable object includes a plurality of segments distributed throughout the magnetizable object and wherein the segments are configured to provide a magnetic gradient for attracting the magnetizable particle and an external source of a magnetic field capable of (i) magnetizing the magnetizable particle and (ii) increasing a degree of magnetization of the magnetizable object and thereby creating the magnetic gradient. A drug delivery system including the magnetic delivery system and a magnetizable particle associated with a therapeutic agent and/or a cell. A cell delivery system based on the magnetic delivery system and a magnetizable particle associated with a cell. A method of using the magnetic delivery system for delivery of a therapeutic agent and/or a cell to a targeted location in a body.
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Citations
57 Claims
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1-37. -37. (canceled)
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38. A magnetizable object comprising:
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a plurality of segments adapted and configured to provide a magnetic gradient for attracting a magnetizable particle; and a coating patterned to provide non-uniform magnetization of a surface of the segments when the magnetizable object is magnetized. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
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57. A method of simultaneously producing far-penetrating magnetic fields that have strong magnetic field gradients, the method comprising producing strong and highly localized field gradients inside the body utilizing a two source system comprising (1) a magnetizable object implanted in a body as an internal source of a magnetic gradient and (2) an external source of a magnetic field.
Specification