Micromachined Passive Programmable Drug Delivery Systems
The device and method discussed above will have great utility for a variety of applications including, but not limited to: (1) controlled, sustained and programmable drug delivery; (2) controlled, sustained and programmable chemical treatments (e.g., for batch growth); and (3) controlled, sustained and programmable food delivery (e.g., for aquariums and other aqueous environments).
Researchers at the University of CA have developed a method and apparatus that can deliver preprogrammed quantities of drug over time without the need for external power or electronics. The invention is a small implantable drug delivery device capable of releasing drug in varying amounts at preprogrammed times. The device uses osmotic or diffusive forces to perform the timing of the delivery and actuate the release of drug. The device is enabled by micromachining technology which can pattern materials with very precise shapes, enabling control of chemical diffusion and swelling of different materials in an aqueous environment. The resulting device can be built to release chemicals into the local environment at predetermined times, either short or extended. Optionally, it can release the chemicals in a pulsatile manner. The invention does not require the use of batteries or other external power. Moreover, the invention can be manufactured by computer using lithographic methods or 2-D precision machining and does not require the integration of many different polymers to function properly.
Patent Number: US20080177153A1
Application Number: US2007952626A
Inventor: Bachman, Mark | Kupperman, Baruch | Divetia, Asheesh | Li, Guann Pyng
Priority Date: 7 Dec 2006
Priority Number: US20080177153A1
Application Date: 7 Dec 2007
Publication Date: 24 Jul 2008
IPC Current: A61K000922 | A61B000500 | A61F000900
US Class: 600300 | 604294 | 6048901
Assignee Applicant: The Regents of the University of California
Title: THERAPEUTIC AGENT DELIVERY SYSTEMS AND DEVICES
Usefulness: THERAPEUTIC AGENT DELIVERY SYSTEMS AND DEVICES
Summary: The device is useful for controlled release of an active ingredient (claimed).
Novelty: Device for controlled release of active ingredient, comprises release aperture associated with deflectable member, base comprising porous substrate layer, and chamber juxtaposed between release aperture and porous substrate layer
Biomedical
Medical Device
8617143
Tech ID/UC Case 18758/2007-285-0 Related Cases 2007-285-0
USA
