Medtronic Minimed, Inc.

EJMar Fonacier

Afshin Bazargan

Pablo Vazquez

Andrew E Weaver

Chad Srisathapat

Kirk Andrew Allen

Yongbo Wang

Bozhil Makaveev

Ben Wu

Apparatus are provided for infusion devices and related control systems and methods. In one embodiment, an infusion device includes a voided portion adapted to receive a shaft portion that includes a shaft coupled to a plunger of a reservoir. The shaft portion includes a detectable feature, and the infusion device includes a sensing arrangement proximate the voided portion to sense the detectable feature. In some embodiments, a control module is coupled to the sensing arrangement to determine a remaining amount of fluid in the reservoir based at least in part on the sensed position of the detectable feature. In other embodiments, the control module identifies an anomalous condition based at least in part on the sensed position of the detectable feature.

Reservoir plunger position monitoring and medical device incorporating same

Apparatus are provided for infusion devices and related control systems and methods. In one embodiment, an infusion device includes a voided portion adapted to receive a shaft portion that includes a shaft coupled to a plunger of a reservoir. The shaft portion includes a detectable feature having an optically detectable pattern such as gray code, and the infusion device includes a sensing arrangement having an optical sensor proximate the voided portion to sense the detectable feature. In some embodiments, a control module is coupled to the sensing arrangement to determine a remaining amount of fluid in the reservoir based at least in part on the sensed position of the detectable feature. In embodiments, the optical sensor detects the sensed position of the shaft based on the detectable feature only when the reservoir is replaced and/or after each delivery of fluid to reduce power consumption.

Reservoir fluid volume estimator and medical device incorporating same

A device for delivering fluid to a user includes a housing, a drive motor assembly in the housing, other internal components in the housing, and a keypad external to the housing. The device includes a number of features and elements that enhance its operation, manufacturability, reliability, and user-friendliness. These features and elements include a shock absorbing element for a battery of the device, a keypad actuator layer that overlies a keypad assembly and forms a water resistant seal with the housing, and an offset element for a piezoelectric speaker that is located inside the housing.

Battery shock absorber for a portable medical device

Apparatus are provided for infusion devices and related control systems and methods. An infusion device includes a voided portion adapted to receive a shaft portion that includes a shaft coupled to a plunger of a reservoir and a sensing arrangement proximate the voided portion to sense a detectable feature. A control module may determine a remaining amount of fluid in the reservoir or identify an anomalous condition based at least in part on the sensed position of the detectable feature.

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Woodland Hills, CA, United States of America

EJMar Fonacier