Apparatus for extracorporeal blood treatment

US11383012B2 · kind B2 · utility

Assignee

• GAMBRO LUNDIA AB · SE

Inventors

• Anders Wallenborg · Bjärred, SE
• Anders Nilsson · Västerås, SE
• Kristian Solem · Katrineholm, SE
• Thomas Hertz · Lund, SE
• Paolo Rovatti · Finale Emilia, IT
• Carlo Alberto Lodi · Modena, IT
• Alessandro Surace · Carpi, IT
• Jan Sternby · Lund, SE

Key dates

• Filing date: Oct 26, 2017
• Grant date: Jul 12, 2022
• Expiry date: Mar 7, 2039

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2230/65
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An extracorporeal blood treatment apparatus is provided comprising a filtration unit (2) connected to a blood circuit (17) and to a dialysate circuit (32), a preparation device (9) for preparing and regulating the composition of the dialysis fluid; a control unit (12) is configured for setting a sodium concentration value for the dialysis fluid in the dialysis supply line (8) at a set point; the setting of the sodium concentration includes the sub-step of calculating the sodium concentration value as an algebraic sum of a main contribution term based on the blood plasma conductivity and of an adjustment contribution term based on a concentration of at least a substance in the dialysis fluid chosen in the group including bicarbonate, potassium, acetate, lactate, citrate, magnesium, calcium, sulphate, and phosphate.