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. 28, 2001
Filed:
Jun. 09, 2000
Dilip H. Shah, Buffalo Grove, IL (US);
Derek Wiebenson, Palatine, IL (US);
Tom L. Brose, Gurnee, IL (US);
Shincy Maliekkal, Mr. Prospect, IL (US);
Aksys Ltd., Lincolnshire, IL (US);
Abstract
A method of calibrating a dialysis machine to determine the volume of a dialysate flow path of the machine including a dialysate preparation tank includes the steps of introducing a known quantity of electrically conductive chemicals into the dialysate preparation tank, filling the dialysate solution flow path with water, mixing the chemicals with water to form a solution, measuring the conductivity of the solution, calculating the system volume (V,) according to the relation: V,=M/(a,r+b,) where M is the mass in grams of the chemicals, a,and b,are a coefficient of linearity and a constant of linearity, respectively, for the chemicals and r is the measured conductivity of the solution.