Monitoring the operating health of a force sensor in a fluid infusion device
First Claim
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1. A device for delivering fluid to a user, the device comprising:
- a housing;
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, the force sensor located proximal to the drive motor assembly and between a proximal end of the drive motor assembly and a proximal end of the housing; and
an electronics module coupled to the force sensor to process the output levels to determine operating health of the force sensor, and the electronics module;
determines a rewind force measurement that indicates a rewind force imparted to the force sensor during a rewind operation;
compares the rewind force measurement to a first force measurement threshold; and
based on the comparison, initiates a corrective action based on the rewind force measurement being less than the first force measurement threshold.
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Abstract
A device for delivering fluid to a user includes a housing, a drive motor assembly in the housing, a force sensor, and an electronics module. The drive motor assembly regulates delivery of fluid by actuating a piston of a fluid reservoir, and the force sensor generates output levels in response to force imparted thereto during, for example, fluid delivery operations. The electronics module processes the output levels of the force sensor to assess the operating health of the force sensor, to check for occlusions in the fluid delivery path, and to monitor the seating status of the fluid reservoir.
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Citations
8 Claims
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1. A device for delivering fluid to a user, the device comprising:
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a housing; 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, the force sensor located proximal to the drive motor assembly and between a proximal end of the drive motor assembly and a proximal end of the housing; and an electronics module coupled to the force sensor to process the output levels to determine operating health of the force sensor, and the electronics module; determines a rewind force measurement that indicates a rewind force imparted to the force sensor during a rewind operation; compares the rewind force measurement to a first force measurement threshold; and based on the comparison, initiates a corrective action based on the rewind force measurement being less than the first force measurement threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification