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.

Date of Patent:
Jun. 03, 2025

Filed:

Aug. 16, 2022
Applicant:

Fenwal, Inc., Lake Zurich, IL (US);

Inventors:

Jeffrey R Maher, Schaumburg, IL (US);

Jonathan W. Prendergast, Palatine, IL (US);

Brian C. Case, Lake Villa, IL (US);

Steven R Katz, Deerfield, IL (US);

Robert Crampton, Gurnee, IL (US);

Ryan DeLacey, Wheaton, IL (US);

Assignee:

Fenwal, Inc., Lake Zurich, IL (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61M 1/36 (2006.01); A61M 1/02 (2006.01); A61M 60/113 (2021.01); A61M 60/279 (2021.01); A61M 60/39 (2021.01); A61M 60/554 (2021.01);
U.S. Cl.
CPC ...
A61M 1/3644 (2014.02); A61M 1/0259 (2013.01); A61M 60/113 (2021.01); A61M 60/279 (2021.01); A61M 60/39 (2021.01); A61M 60/554 (2021.01); A61M 1/0272 (2013.01); A61M 2205/3331 (2013.01);
Abstract

A fluid processing system includes a fluid processing device and a fluid flow circuit. The device includes a pump configured to convey a priming fluid through the circuit. The pressure in a conduit of the circuit is measured while the pump is operated at a particular rate. When the magnitude of the pressure is less than the magnitude of a predetermined pressure at the end of a time interval, the pump is operated at an increased rate. When the magnitude of the pressure is greater than the magnitude of the predetermined pressure at the end of the time interval, the pump is instead operated at a decreased rate. The magnitude of the pressure in the conduit is again compared to the magnitude of the predetermined pressure after the pump has operated at the increased or decreased rate for the time interval to determine how to next adjust the operational rate.


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