Patent ID: 8556856

Claim:
A device for delivering fluid to a user, the device comprising: a housing; a reservoir cavity within the housing to accommodate fluid reservoirs; a drive motor assembly in the housing to regulate delivery of fluid by actuating a piston of a fluid reservoir; a force sensor associated with the drive motor assembly to generate output levels in response to force imparted thereto; and an electronics module coupled to the force sensor to process the output levels to determine a seating status of the fluid reservoir in the reservoir cavity, wherein the electronics module: determines a measure of actuation force imparted to the force sensor during operation of the drive motor assembly; compares the measure of actuation force to an amount of force that is less than normally expected actuation forces of the device, wherein the amount of force is indicative of an unseated state of the fluid reservoir; and generates indicia of an unseated reservoir condition when the measure of actuation force is less than the amount of force.