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:
Sep. 05, 2017
Filed:
Aug. 08, 2013
Gambro Lundia Ab, Lund, SE;
Gambro Lundia AB, Lund, SE;
Abstract
An apparatus is described for extracorporeal blood treatment (), comprising a treatment unit (), an extracorporeal blood circuit () and a fluid evacuation line (). The apparatus comprises a control unit () connected with a pressure sensor () and with a blood pump () and configured to move the blood pump (), generating a variable flow with a constant component equal to a desired blood flow value and a variable component having a nil mean value; the variable flow generates, in the expansion chamber (), a progression of the pressure that is variable over time (P(t)) with a pressure component (ΔP) oscillating about a mean value (P). The control unit receives, from the sensor, a plurality of values (P) over a period of time (T) comprising a plurality of oscillations of the pressure about the mean value and calculates, according to the pressure values (P), a control value that is representative of the oscillating pressure component (ΔP) and then compares the control value with a reference threshold to determine the verification or not of a condition of variation of the blood level in the expansion chamber ().