Patent ID: 8998886
Filing Date: 2015-04-07
Classification: A61K,A61M

Abstract:
1. A method of controlling an osmotic pump device including an osmotic chamber including a magnetically or electrically responsive control element in a wall thereof and a semi-permeable membrane separating the osmotic chamber from an osmotic fluid source, comprising: generating with a remote control signal source an electromagnetic control signal including frequency components absorbable by the magnetically or electrically responsive control element in the wall of the osmotic chamber of the osmotic pump device in an environment; and wirelessly transmitting the electromagnetic control signal from the remote control signal source to the magnetically or electrically responsive control element in the wall of the osmotic chamber of the osmotic pump device with signal characteristics sufficient to activate the magnetically or electrically responsive control element in the wall of the osmotic chamber of the osmotic pump device, wherein absorption of the electromagnetic control signal by the magnetically or electrically responsive control element is sufficient to control the concentration of an osmotic-pressure generating material in the osmotic fluid in the osmotic chamber of the osmotic pump device to thereby control the flow of osmotic fluid through the semi-permeable membrane into the osmotic chamber.