Liquid purification or separation – Processes – Including controlling process in response to a sensed condition
Reexamination Certificate
2005-12-13
2010-10-19
Soohoo, Tony G (Department: 1797)
Liquid purification or separation
Processes
Including controlling process in response to a sensed condition
C210S096200, C210S646000, C210S650000, C210S739000, C422S082020, C700S273000, C137S005000
Reexamination Certificate
active
07815809
ABSTRACT:
A method for conductivity calculation in a treatment fluid downstream a filtration unit in a blood treatment apparatus is provided. The conductivity calculation is then used for clearance and fistula flow determination. A flow of treatment fluid is created in the filtration unit; a change in the conductivity of the treatment fluid at the inlet of the filtration unit is imposed to cause an induced conductivity change in the fluid at the outlet of the filtration unit; a predetermined number of conductivity values Cdo downstream from the filtration unit are measured. The measured conductivity values define a curve the pattern of which is estimated by means of one interpolating mathematical function in an interval of time after the occurrence of the induced conductivity change; a characteristic measuring time tcalcclris determined. The value of the interpolating mathematical function at the characteristic measuring time tcalcclrrepresents the conductivity value Cdo2 of the treatment fluid downstream from the filtration unit after the induced conductivity change.
REFERENCES:
patent: 3324720 (1967-06-01), Sutherland
patent: 4136563 (1979-01-01), Mueller et al.
patent: 4923613 (1990-05-01), Chevallet
patent: 5024756 (1991-06-01), Sternby et al.
patent: 5100554 (1992-03-01), Polaschegg
patent: 5230702 (1993-07-01), Lindsay et al.
patent: 5243539 (1993-09-01), Holt et al.
patent: 5396178 (1995-03-01), Rybarski
patent: 5399157 (1995-03-01), Goux et al.
patent: 5510717 (1996-04-01), Buffaloe et al.
patent: 5567320 (1996-10-01), Goux et al.
patent: 5644240 (1997-07-01), Brugger
patent: 5662806 (1997-09-01), Keshaviah et al.
patent: 5716531 (1998-02-01), Kenley et al.
patent: 5872454 (1999-02-01), West
patent: 5928180 (1999-07-01), Krivitski et al.
patent: 5938938 (1999-08-01), Bosetto et al.
patent: 5954951 (1999-09-01), Nuccio
patent: 6075367 (2000-06-01), Brugger
patent: 6101449 (2000-08-01), Givens et al.
patent: 6110384 (2000-08-01), Goux et al.
patent: 6123847 (2000-09-01), Bene
patent: 6139754 (2000-10-01), Hartranft et al.
patent: 6187199 (2001-02-01), Goldau
patent: 6217539 (2001-04-01), Goldau
patent: 6258027 (2001-07-01), Sternby
patent: 6269313 (2001-07-01), Givens et al.
patent: 6452371 (2002-09-01), Brugger
patent: 6614212 (2003-09-01), Brugger et al.
patent: 6648845 (2003-11-01), Gotch et al.
patent: 6683464 (2004-01-01), Park et al.
patent: 6690173 (2004-02-01), Blades
patent: 6691040 (2004-02-01), Bosetto et al.
patent: 6702774 (2004-03-01), Polaschegg
patent: 6767333 (2004-07-01), Muller et al.
patent: 6860866 (2005-03-01), Graf et al.
patent: 6861266 (2005-03-01), Sternby
patent: 6966979 (2005-11-01), Pedrazzi
patent: 7001353 (2006-02-01), Bosetto et al.
patent: 7033539 (2006-04-01), Krensky et al.
patent: 7067061 (2006-06-01), Bosetto et al.
patent: 7077819 (2006-07-01), Goldau et al.
patent: 7172570 (2007-02-01), Cavalcanti et al.
patent: 7208134 (2007-04-01), Bromberg et al.
patent: 7387734 (2008-06-01), Felding
patent: 7435235 (2008-10-01), Sternby
patent: 7473371 (2009-01-01), Krivitski et al.
patent: 7488447 (2009-02-01), Sternby
patent: 7749184 (2010-07-01), Cavalcanti et al.
patent: 2003/0164708 (2003-09-01), Park et al.
patent: 2003/0217975 (2003-11-01), Yu et al.
patent: 2003/0230533 (2003-12-01), Gross et al.
patent: 2004/0060865 (2004-04-01), Callan et al.
patent: 2004/0073153 (2004-04-01), Bosetto et al.
patent: 2004/0186409 (2004-09-01), Cavalcanti et al.
patent: 2005/0274658 (2005-12-01), Rosenbaum et al.
patent: 2006/0113250 (2006-06-01), Krensky et al.
patent: 2006/0200064 (2006-09-01), Gross et al.
patent: 2007/0023334 (2007-02-01), Hallstadius et al.
patent: 2007/0131595 (2007-06-01), Jansson et al.
patent: 2007/0209977 (2007-09-01), Wilf et al.
patent: 2008/0010028 (2008-01-01), Mazon et al.
patent: 0 547 025 (1993-06-01), None
patent: 0 658 352 (1995-06-01), None
patent: WO 03/066135 (2003-08-01), None
Jansson Olof
Persson Roland
Sternby Jan Peter
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Gambro Lundia AB
Mellon David C
Soohoo Tony G
LandOfFree
Method for conductivity calculation in a treatment fluid... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for conductivity calculation in a treatment fluid..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for conductivity calculation in a treatment fluid... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4221758