The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 20, 2017
Filed:
Nov. 26, 2013
Medtronic Minimed, Inc., Northridge, CA (US);
Bozhil Makaveev, Woodland Hills, CA (US);
Yongbo Wang, Arcadia, CA (US);
Ben Wu, Pasadena, CA (US);
Afshin Bazargan, Simi Valley, CA (US);
Pablo Vazquez, North Hills, CA (US);
EJMar Fonacier, Woodland Hills, CA (US);
Andrew E. Weaver, Granada Hills, CA (US);
MEDTRONIC MINIMED, INC., Northridge, CA (US);
Abstract
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.