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:
Aug. 11, 2015
Filed:
Mar. 09, 2012
Scott A. Denis, Murrieta, CA (US);
Silke Williams, San Diego, CA (US);
Scott A. Denis, Murrieta, CA (US);
Silke Williams, San Diego, CA (US);
ZEVEX, INC., Salt Lake City, UT (US);
Abstract
Methods for improving the accuracy of occlusion sensor baselines in an infusion pump are described. An infusion pump includes logic for making an antiratchet decision for determining whether a new administration set was installed after there has been access to the administration set. If so, then new occlusion sensor baselines are established. If not, then the current baselines are maintained. The antiratchet decision logic may depend upon the value of a baseline delta equal to a difference between the upstream sensor signal and the downstream sensor signal. In another aspect, an upstream occlusion sensor baseline is shifted in correspondence with decreases in the upstream sensor signal occurring while a pumping mechanism of the infusion pump is not operating to compensate for sensor signal drift.