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:
Feb. 07, 2023

Filed:

Feb. 11, 2019
Applicants:

Baxter International Inc., Deerfield, IL (US);

Baxter Healthcare S.a., Glattpark, CH;

Inventors:

Roger L. Hungerford, Medina, NY (US);

Tuan Bui, Buffalo, NY (US);

Assignees:

BAXTER INTERNATIONAL INC., Deerfield, IL (US);

BAXTER HEALTHCARE S.A., Glattpark, CH;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61M 5/168 (2006.01); G06T 7/60 (2017.01); A61M 5/14 (2006.01); A61M 5/142 (2006.01);
U.S. Cl.
CPC ...
A61M 5/1689 (2013.01); A61M 5/142 (2013.01); A61M 5/1411 (2013.01); A61M 5/1684 (2013.01); A61M 5/16804 (2013.01); G06T 7/60 (2013.01); A61M 2005/16868 (2013.01); A61M 2205/18 (2013.01); A61M 2205/3306 (2013.01); A61M 2205/3379 (2013.01); A61M 2205/50 (2013.01);
Abstract

A method of operating an infusion pump includes transmitting light through or around a drop of fluid suspended from an end of a drip tube for the infusion pump, the end of the drip tube located in a drip chamber for the infusion pump, wherein the drip tube is configured for connection to a source of the fluid; receiving, using an optical system for the pump, light transmitted through or around the drop; transmitting, to a specially programmed microprocessor and using the optical system, data regarding the received light; and, using the microprocessor to calculate a volume of the drop using the data.


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