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:
Oct. 21, 2025
Filed:
Aug. 12, 2021
Baxter International Inc., Deerfield, IL (US);
Baxter Healthcare SA, Glattpark, CH;
John Zafiris, Hawthorn Woods, IL (US);
Baxter International Inc., Deerfield, IL (US);
Baxter Healthcare SA, Glattpark, CH;
Abstract
A peritoneal dialysis system includes a chamber; a hydraulic pump; an inflatable bladder located within the chamber and in hydraulic fluid communication with the hydraulic pump; and a control unit configured to cause a known amount of hydraulic fluid to be metered to the inflatable bladder and to determine (i) a first amount of air before a discharge stroke of the hydraulic pump via a first ideal gas law calculation, (ii) a second amount of air after the discharge stroke of the hydraulic pump via a second ideal gas law calculation, and (iii) a discharge volume of fresh or used dialysis fluid for the discharge stroke by subtracting a difference between the first amount of air and the second amount of air from the known amount of hydraulic fluid metered to the inflatable bladder for the discharge stroke.