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:
Mar. 20, 2012
Filed:
Mar. 11, 2009
Applicant:
Yu Zhou, Vernon Hills, IL (US);
Inventor:
Yu Zhou, Vernon Hills, IL (US);
Assignees:
Baxter International Inc., Deerfield, IL (US);
Baxter Healthcare S.A., Glattpark (Opfikon), CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B 43/08 (2006.01); F04B 45/06 (2006.01); F01B 19/04 (2006.01); A61M 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An infusion pump includes an actuator having an output shaft; a pump actuator having a length (l) moved by the output shaft and in contact with tubing, such that the pump actuator at an output shaft actuated distance (x) creates flat contact areas with the tubing, and wherein remaining non-contact areas of the tubing are at least substantially circular in shape; and a logic implementer configured to use at least two relationships to solve for a same number of variables to calculate a cross-sectional area of the tubing at an output shaft actuated distance (x).