Osmotic pump with remotely controlled osmotic flow rate
First Claim
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1. 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.
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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.
242 Citations
14 Claims
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1. A remote controller for an osmotic pump device, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification