Pumps – Condition responsive control of pump drive motor – Single motor control element responsive to means sensing...
Reexamination Certificate
2011-03-15
2011-03-15
Freay, Charles G (Department: 3746)
Pumps
Condition responsive control of pump drive motor
Single motor control element responsive to means sensing...
C417S053000, C604S151000, C604S153000, C604S246000, C700S282000
Reexamination Certificate
active
07905710
ABSTRACT:
A medical pump with an improved continuity low flow delivery system and method for use with a pumping chamber, for example in a cassette, is disclosed. The pump includes a pump drive for exerting a force on the pumping chamber and a sensor for sensing the force/pressure exerted by the pump drive on the pumping chamber. The pump drive position sensor senses the position of the pump drive. The medical pump also includes a processing unit and a memory having a programming code adapted to calculate the rate of change of the sensed force/pressure values and determine whether the rate of change of the sensed force/pressure values meets a rate of change threshold. Once the rate of change threshold is met, the programming code is adapted to calculate a remaining pump drive travel value for determining how much farther the pump drive should travel before the end of an effective pump cycle. The programming code is further adapted to trigger one or more signals to drive the pump drive for the remainder of the effective pump cycle using the remaining pump drive travel value.
REFERENCES:
patent: 3985467 (1976-10-01), Lefferson
patent: 4078562 (1978-03-01), Friedman
patent: 4308866 (1982-01-01), Jelliffe et al.
patent: 4411651 (1983-10-01), Schulman
patent: 4617014 (1986-10-01), Cannon et al.
patent: 4741736 (1988-05-01), Brown
patent: 4846792 (1989-07-01), Bobo et al.
patent: 4886422 (1989-12-01), Takeuchi et al.
patent: 5006050 (1991-04-01), Cooke et al.
patent: 5116312 (1992-05-01), Blankenship et al.
patent: 5174472 (1992-12-01), Raque et al.
patent: 5292306 (1994-03-01), Wynkoop et al.
patent: 5399171 (1995-03-01), Bowman et al.
patent: 5464392 (1995-11-01), Epstein et al.
patent: 5482438 (1996-01-01), Anderson et al.
patent: 5551850 (1996-09-01), Williamson et al.
patent: 5658133 (1997-08-01), Anderson et al.
patent: 5938636 (1999-08-01), Kramer et al.
patent: 5957890 (1999-09-01), Mann et al.
patent: 6259587 (2001-07-01), Sheldon et al.
patent: 6267559 (2001-07-01), Mossman et al.
patent: 6497680 (2002-12-01), Holst et al.
patent: 2002/0013545 (2002-01-01), Soltanpour et al.
patent: 2002/0018720 (2002-02-01), Carlisle et al.
patent: 2002/0183693 (2002-12-01), Peterson et al.
patent: 2003/0055375 (2003-03-01), Holst et al.
patent: 2003/0091442 (2003-05-01), Bush et al.
patent: 2004/0047736 (2004-03-01), Nose et al.
patent: 2004/0120825 (2004-06-01), Bouton et al.
patent: 2004/0247445 (2004-12-01), Nelson et al.
patent: 2005/0021297 (2005-01-01), Hartlaub
patent: 2005/0143864 (2005-06-01), Blomquist
patent: 2005/0187515 (2005-08-01), Varrichio et al.
patent: 2005/0214129 (2005-09-01), Greene et al.
patent: 2005/0235732 (2005-10-01), Rush
patent: 2005/0235733 (2005-10-01), Holst et al.
patent: 0 282 323 (1988-03-01), None
patent: 0 291 727 (1988-04-01), None
patent: 0 960 627 (1999-05-01), None
patent: 91/00113 (1991-01-01), None
patent: 98/04304 (1998-02-01), None
patent: 99/52575 (1999-10-01), None
patent: 00/13726 (2000-03-01), None
patent: 02/087664 (2002-11-01), None
patent: 2004/035115 (2004-04-01), None
patent: 2004/112579 (2004-12-01), None
patent: 2006/022906 (2006-03-01), None
S. Crystal Coley, et al, “Performance of three portable infusion-pump devices set to deliver 2 mL/hr”, Amer. J. of Health System Pharmacy, vol. 54, Jun. 1997, pp. 1277-1280.
K. R. Dunster, et al, “Flow Continuity of Infusion Systems at Low Flow Rates”, Anaesthesia and Intensive Care, vol. 23, No. 5, Oct. 1995, pp. 605-609.
Brian M. Ilfeld, et al, “Portable Infusion Pumps Used for Continuous Regional Analgesia: Delivery Rate Accuracy and Consitency”, Regional Anesthesia and Pain Medicine, vol. 28, No. 5, Sep.-Oct. 2003, pp. 424-432.
Brian M. Ilfeld, et al, “Delivery Rate Accuracy of Portable Bolus-Capable Infusion Pumps Used for Patient-Controlled Continuous Regional Analgesia”, Regional Anesthesia and Pain Medicine, vol. 28, No. 1, Jan.-Feb. 2003, pp. 17-23.
Abrahamson Kent D.
Boyd Robert R.
Cousineau Robert P.
Fathallah Marwan A.
Greene Howard L.
Crabb Michael R.
Freay Charles G
Hospira, Inc.
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