US 8,273,075 B2Granted

Osmotic pump with remotely controlled osmotic flow rate

AssigneeThe Invention Science Fund I, LLC

InventorsLeroy E. Hood, Muriel Y. Ishikawa, Edward K. Y. Jung, Robert Langer, Clarence T. Tegreene, Lowell L. Wood, Jr., Victoria Y. H. Wood

Life of this patent

Estimating the term…

patentgrep

Loading patent…

Abstract

Embodiments of a system including a remotely controlled osmotic pump device and associated controller are described. Methods of use and control of the device are also disclosed. According to some embodiments, an osmotic pump device is placed in an environment in order to pump a material into the environment or into an additional fluid handling structure within the osmotic pump device. Exemplary environments include a body of an organism, a body of water, or an enclosed volume of a fluid. In selected embodiments, a magnetic field, an electric field, or electromagnetic control signal may be used.

Claims14

Dependent claims

A remote controller for an osmotic pump device, comprising:

an electromagnetic signal generator configured to produce a time-varying electromagnetic field control signal sufficient to adjust a remotely controllable valve in an osmotic pump device located in an environment to produce a desired time-varying pumping rate of delivery fluid from a delivery reservoir of the pump to the environment, the pumping rate depending on a flow rate of fluid through the valve;
and
an electromagnetic signal transmitter configured to wirelessly transmit the electromagnetic signal to an electromagnetically responsive control element of the remotely controllable valve, wherein the electromagnetic signal has signal characteristics sufficient to produce a change in dimension, temperature, shape, volume, surface area or orientation in the electromagnetically responsive control element upon receipt of the electromagnetic signal by the electromagnetically responsive control element.

Dependencies are inferred from the claim text.

Facts

Application: 11/302,321Filed 13 Dec 2005
Published: US 2007/0135797 A114 Jun 2007
Granted: 25 Sep 2012
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

A61K 9/0004
Galenical forms characterised by the drug release technique; Application systems commanded by energy: osmotic delivery systems; Sustained release…
A61K 9/0009
Galenical forms characterised by the drug release technique; Application systems commanded by energy: involving or responsive to electricity,…
A61M 5/14276
Adapted to be carried by the patient, e.g. portable on the body: specially adapted for implantation
A61M 5/145
Pressure infusion, e.g. using pumps: using pressurised reservoirs, e.g. by means of pistons