Invention Grant
- Patent Title: Method and apparatus for determining a patient or treatment or apparatus parameter during an extracorporeal blood treatment
- Patent Title (中): 用于在体外血液处理期间确定患者或治疗或装置参数的方法和装置
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Application No.: US11013783Application Date: 2004-12-17
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Publication No.: US07699992B2Publication Date: 2010-04-20
- Inventor: Jan Peter Sternby
- Applicant: Jan Peter Sternby
- Applicant Address: SE
- Assignee: Gambro Lundia AB
- Current Assignee: Gambro Lundia AB
- Current Assignee Address: SE
- Agency: Finnegan, Henderson, Farabow, Garrett & Dunner L.L.P.
- Main IPC: B01D61/00
- IPC: B01D61/00 ; B01D61/24 ; B01D61/32 ; B01D61/30
Abstract:
During a dialysis treatment carried out by a dialysis apparatus, in which a dialysis liquid is circulated to a clean dialysate filter (43) arranged before a dialyser (3), the conductivity of the dialysis liquid is altered according to an altering function that is a function of a mathematical model of the filter (43), in a way that will make the conductivity after the filter change more quickly. A conductivity cell (47), which is arranged after the dialyser, measures the conductivity of the spent dialysis liquid changed in response to said alteration. A control and computer system (52) evaluates the dialysance from said measured response. The conductivity can be changed for a comparatively short time period that is sufficient to allow reliable results.
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