US Patent No: 4,840,542

Number of patents in Portfolio can not be more than 2000

Infusion pump with direct pressure sensing

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ATTORNEY / AGENT: (SPONSORED)
 

Importance

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Abstract

An infusion pump incorporates a cassette formed by bonding of two substantially flat sheets. The fluid to be infused to the patient comes into contact only with the cassette. The cassette includes first and second flexible sheets which define a pumping chamber therebetween. The infusion pump is provided with a pumping member having a hub and a plurality of petal-shaped sections extending radially outward therefrom and pivotal relative thereto. A stepping motor can be operated to move the pumping member against the second flexible sheet to decrease the volume of the pumping chamber and pump fluid to the patient. A load cell monitors the force exerted by the stepping motor on the hub. An outlet restriction value is electronically controlled by a second stepping motor in response to the pressure sensed by the load cell to control pumping to a predetermined pressure. The pressure can be selectively varied which permits the use of a low pressure at low flow rates to decrease the time necessary to detect an occlusion in the output lines.

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First Claim

Related Publications

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Patent Owner(s)

Patent OwnerAddressTotal Patents
GENERAL ELECTRIC CAPITAL CORPORATIONCHICAGO, IL503
KENDALL MCGAW LABORATORIES, INC., A CORP. OF OHIRVINE, CA36

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Abbott, Martyn S Richardson, TX 8 421

Cited Art

Patent Info (Count) # Cites Year
 
AVI, INC., (3)
4,236,880 Nonpulsating IV pump and disposable pump chamber 214 1979
4,277,226 IV Pump with empty supply reservoir and occlusion detector 136 1979
4,322,201 IV Pump with back pressure control 58 1979
 
TRITON ASSOCIATES, 681 MARKET ST., SUITE 981, SAN FRANCISCO, CA., A LIMITED PARTNERSHIP (2)
4,199,307 Medical infusion system 102 1978
4,273,121 Medical infusion system 104 1979
 
FICHET-BAUCHE (1)
4,461,222 Installation for protection against break-ins 8 1982
 
FRESENIUS USA, INC. AND FRESENIUS AKTIENGESELLSCHAFT (1)
4,335,835 Device for the intravenous or enteric infusion of liquids into the human body at a predetermined constant rate 37 1980
 
HOSPIRA, INC. (1)
4,696,671 Infusion system having plural fluid input ports and at least one patient output port 194 1986
 
MESSERSCHMITT-BOLKOW-BLOHM GMBH (1)
4,276,004 Infusion pump 41 1979
 
NMT NEUROSCIENCES (IP), INC., A DELAWARE CORPORATION (1)
4,548,607 Implantable manually actuated medication dispensing system 40 1983
 
POLAROID CORPORATION (1)
4,321,014 Constant flow pumping apparatus 36 1979
 
RICOH COMPANY, LTD. (1)
4,479,706 Distance measuring circuit 8 1981
 
STEWART-NAUMANN LABORATORIES, INC. (1)
4,256,437 Peristaltic infusion pump and method 110 1978

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
BAXTER INTERNATIONAL INC. (14)
5,395,320 Programmable infusion pump with interchangeable tubing 47 1993
5,904,668 Cassette for an infusion pump 16 1995
D380260 Infusion pump 18 1995
5,637,093 Infusion pump with selective backlight 18 1995
5,620,312 Infusion pump with dual-latching mechanism 74 1995
D376848 Infusion pump cassette 29 1995
5,791,880 Infusion pump having power-saving modes 57 1997
5,766,155 Infusion pump with selective backlight 21 1997
5,993,420 Cassette for an infusion pump 25 1998
6,468,242 Medical apparatus with patient data recording 19 1998
7,927,313 Medical device configuration based on recognition of identification information 0 2004
8,105,269 In situ tubing measurements for infusion pumps 2 2008
8,137,083 Infusion pump actuators, system and method for controlling medical fluid flowrate 0 2009
8,382,447 Shuttle pump with controlled geometry 0 2009
 
COVIDIEN AG (9)
7,794,423 Re-certification system for a flow control apparatus 1 2004
7,608,059 Flow control apparatus 7 2004
7,462,170 Administration feeding set and valve mechanism 12 2004
7,753,881 Administration feeding set 2 2007
7,753,883 Administration feeding set 2 2007
7,998,109 Re-certification system for a flow control apparatus 0 2009
7,862,535 Re-certification system for a flow control apparatus 0 2009
8,034,028 Administration feeding set 1 2010
8,361,024 Administration feeding set 0 2011
 
HOSPIRA, INC. (7)
5,000,664 Apparatus and method to test for valve leakage in a pump assembly 37 1989
5,336,053 Method of testing for leakage in a solution pumping system 13 1993
5,415,528 Solution pumping for maximizing output while minimizing uneven pumping pressures 26 1994
6,497,680 Method for compensating for pressure differences across valves in cassette type IV pump 14 1999
6,942,636 Method for compensating for pressure differences across valves in cassette type IV pump 13 2002
7,407,489 Methods for compensating for pressure differences across valves in IV pumps 4 2005
7,402,154 Method for compensating for pressure differences across valves in cassette type IV pump 4 2005
 
OPTISCAN BIOMEDICAL CORPORATION (6)
7,907,985 Fluid handling cassette with a fluid control interface and sample separator 1 2005
7,860,542 Analyte detection system with reduced sample volume 0 2005
7,481,787 Fluid handling cassette having a spectroscopic sample cell 11 2005
7,860,543 Analyte detection system with reduced sample volume 1 2006
8,197,770 Fluid handling cassette having a spectroscopic sample cell 0 2009
8,251,907 System and method for determining a treatment dose for a patient 1 2010
 
CAREFUSION 303, INC. (5)
5,217,355 Two-cycle peristaltic pump with occlusion detector 31 1991
5,165,873 Two-cycle peristaltic pump 33 1992
5,803,712 Method of measuring an occlusion in an infusion device with disposable elements 10 1995
5,584,667 Method of providing uniform flow from an infusion device 15 1995
6,110,153 Infusion device with optical sensor 22 1998
 
FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH (4)
8,142,653 Medical fluid cassettes and related systems 0 2009
8,377,293 Dialysis fluid cassettes and related systems and methods 0 2011
8,435,408 Medical fluid cassettes and related systems 0 2012
8,366,921 Dialysis systems and related methods 0 2012
 
B. BRAUN MEDICAL, INC. (2)
5,302,093 Disposable cassette with negative head height fluid supply and method 104 1992
5,554,013 Disposable cassette with negative head height fluid supply 43 1994
 
FRESENIUS MEDICAL CARE HOLDINGS, INC. (2)
7,935,074 Cassette system for peritoneal dialysis machine 13 2006
8,192,401 Medical fluid pump systems and related components and methods 0 2010
 
HUMANTEKNIK AB (2)
5,318,414 Valve arrangement and positive-displacement pump 0 1992
5,441,392 Apparatus for repetitively dispensing a measured volume of liquid 2 1994
 
LMA NORTH AMERICA, INC. (2)
7,527,608 Medication infusion and aspiration system and method 0 2004
7,520,871 System and method for tension-activated fluid control 0 2004
 
ABBOTT LABORATORIES (1)
7,360,999 Means for using single force sensor to supply all necessary information for determination of status of medical pump 5 2003
 
AGILENT TECHNOLOGIES, INC. (1)
5,056,992 IV pump and disposable flow chamber with flow control 49 1989
 
BAXTER HEALTHCARE CORPORATION (1)
5,628,619 Infusion pump having power-saving modes 42 1995
 
BLOCK MEDICAL, INC. (1)
6,312,227 Infusion device with disposable elements 9 1993
 
CARDINAL HEALTH 303, INC. (1)
6,146,109 Infusion device with disposable elements 25 1998
 
EASTMAN KODAK COMPANY (1)
5,593,290 Micro dispensing positive displacement pump 73 1994
 
FRESENIUS AG (1)
5,055,013 Apparatus for injecting fluids 10 1990
 
FRESENIUS VIAL SAS (1)
6,558,347 Control device and process for a pumping device 21 2000
 
GRASEBY MEDICAL INC. (1)
5,609,575 Infusion pump and method with dose-rate calculation 114 1995
 
GRASEBY MEDICAL LIMITED (1)
5,419,684 Infusion pump with reversible motor and method of use 17 1993
 
I-FLOW CORPORATION (1)
6,742,992 Infusion device with disposable elements 30 2002
 
MOORE NORTH AMERICA, INC. (1)
5,795,327 Infusion pump with historical data recording 46 1995
 
PATIENT SOLUTIONS, INC. D/B/A INVACARE INFUSION SYSTEMS (1)
5,853,386 Infusion device with disposable elements 36 1996