US Patent No: 5,634,896

Number of patents in Portfolio can not be more than 2000

Liquid pumping mechanisms for peritoneal dialysis systems employing fluid pressure

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Pumping mechanisms for performing peritoneal dialysis and the like employ a pumping mechanism comprising a diaphragm that operate in response to applied fluid pressure. Flexible tubing is attached to the pumping mechanism for carrying liquid to and from the patient's peritoneal cavity. An actuating station for pumping mechanism receives the pumping mechanism and attached tubing. A pressure transfer element conveys fluid pressure to the diaphragm for moving liquid through the cassette. An occluder element contacts and crimps closed the tubing attached to the cassette. A first reservoir inflates with positive fluid pressure for contacting the pressure transfer element to hold it in operative contact against the diaphragm. A second reservoir inflates with positive fluid pressure for contacting the occluding element to hold it away from crimping contact with the tubing. At least one of the first and second reservoirs also transports fluid pressure to the pressure transfer element for conveyance to the diaphragm.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
DEKA PRODUCTS LIMITED PARTNERSHIPMANCHESTER, NH360

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bouchard, Clement D Pembroke, NH 11 498
Bryant, Robert J Manchester, NH 23 1002
Kamen, Dean Bedford, NH 212 2027
Lanigan, Richard Concord, NH 22 1471
Miller, Bradley D Londonderry, NH 19 639
Spencer, Geoffrey P Manchester, NH 14 751
Vincent, Douglas E Manchester, NH 18 1121

Cited Art Landscape

Patent Info (Count) # Cites Year
 
DEKA PRODUCTS LIMITED PARTNERSHIP (3)
5,350,357 Peritoneal dialysis systems employing a liquid distribution and pumping cassette that emulates gravity flow 199 1993
5,431,626 Liquid pumping mechanisms for peritoneal dialysis systems employing fluid pressure 132 1993
5,421,823 Peritoneal dialysis methods that emulate gravity flow 120 1994
 
Baxter Travenol Laboratories, Inc. (2)
4,425,116 Control system for fluid flow apparatus 70 1982
4,425,113 Flow control mechanism for a plasmaspheresis assembly or the like 57 1982
 
BAXTER INTERNATIONAL INC. (1)
5,324,422 User interface for automated peritoneal dialysis systems 77 1993
 
I-FLOW CORPORATION (1)
4,950,245 Multiple fluid cartridge and pump 86 1988
 
NESTLE S.A. (1)
5,364,342 Microsurgical cassette 94 1993
 
SURGIN SURGICAL INSTRUMENTATION, INC. (1)
5,163,900 Disposable cassette systems 70 1990

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
BAXTER INTERNATIONAL INC. (50)
6,666,665 Fluid delivery mechanism having a plurality of plungers for compressing a metering chamber 14 1999
6,270,673 Door latching assembly for holding a fluid pressure actuated cassette during use 49 1999
6,471,855 Cassette with integral separation device 24 2000
6,585,499 Fluid delivery mechanism having a flush-back operation 20 2001
6,709,412 Blood processing systems and methods that employ an in-line leukofilter mounted in a restraining fixture 8 2001
7,107,837 Capacitance fluid volume measurement 27 2002
7,175,606 Disposable medical fluid unit having rigid frame 46 2002
7,153,286 Automated dialysis system 51 2002
7,115,228 One-piece tip protector and organizer 23 2002
7,087,036 Fail safe system for operating medical fluid valves 20 2002
6,939,111 Method and apparatus for controlling medical fluid pressure 24 2002
6,929,751 Vented medical fluid tip protector methods 41 2002
6,814,547 Medical fluid pump 78 2002
6,764,761 Membrane material for automated dialysis system 31 2002
7,238,164 Systems, methods and apparatuses for pumping cassette-based therapies 53 2002
6,953,323 Medical fluid pump 40 2003
7,507,220 Method for monitoring and controlling peritoneal dialysis therapy 9 2003
7,007,824 Liquid dispenser and flexible bag therefor 8 2003
7,517,333 Blood processing systems and methods that employ an in-line, flexible leukofilter 2 2004
7,575,564 Priming, integrity and head height methods and apparatuses for medical fluid systems 1 2004
8,545,435 Method and apparatus for providing medical treatment therapy based on calculated demand 0 2005
7,083,719 Medical system including vented tip protector 36 2005
7,500,962 Medical fluid machine with air purging pump 26 2005
7,410,475 Graphical user interface for automated dialysis system 21 2006
7,815,595 Automated dialysis pumping system 25 2006
7,789,849 Automated dialysis pumping system using stepper motor 15 2006
8,323,231 Method and apparatus for monitoring and controlling peritoneal dialysis therapy 0 2006
8,298,170 Method of making a peritoneal dialysis therapy machine 0 2006
8,558,964 Dialysis system having display with electromagnetic compliance (“EMC”) seal 0 2007
8,361,023 Dialysis system with efficient battery back-up 0 2007
7,998,115 Dialysis system having optical flowrate detection 3 2007
7,731,689 Dialysis system having inductive heating 0 2007
8,206,338 Pumping systems for cassette-based dialysis 1 2007
7,957,927 Temperature compensation for pneumatic pumping system 1 2007
7,909,795 Dialysis system having disposable cassette and interface therefore 3 2007
7,901,376 Dialysis cassette having multiple outlet valve 7 2007
8,206,339 System for monitoring and controlling peritoneal dialysis 0 2009
8,070,709 Peritoneal dialysis machine 4 2009
8,403,880 Peritoneal dialysis machine with variable voltage input control scheme 0 2009
8,529,496 Peritoneal dialysis machine touch screen user interface 0 2010
8,172,789 Peritoneal dialysis system having cassette-based-pressure-controlled pumping 0 2010
8,075,526 Automated dialysis system including a piston and vacuum source 4 2010
8,066,671 Automated dialysis system including a piston and stepper motor 8 2010
8,506,522 Peritoneal dialysis machine touch screen user interface 0 2011
8,328,758 Dialysis systems and methods having disposable cassette and interface therefore 0 2011
8,329,030 Hemodialysis system with cassette and pinch clamp 0 2011
8,323,492 Hemodialysis system having clamping mechanism for peristaltic pumping 0 2011
8,376,999 Automated dialysis system including touch screen controlled mechanically and pneumatically actuated pumping 0 2011
8,679,054 Pumping systems for cassette-based dialysis 0 2012
8,684,971 Automated dialysis system using piston and negative pressure 0 2013
 
DEKA PRODUCTS LIMITED PARTNERSHIP (48)
6,905,479 Pumping cartridge having an integrated filter and method for filtering a fluid with the cartridge 43 1999
6,877,713 Tube occluder and method for occluding collapsible tubes 55 1999
6,604,908 Methods and systems for pulsed delivery of fluids from a pump 61 1999
6,485,263 Systems for determining the volume of a volumetric chamber and pumping a fluid with a pump chamber 56 1999
6,416,293 Pumping cartridge including a bypass valve and method for directing flow in a pumping cartridge 145 1999
6,382,923 Pump chamber having at least one spacer for inhibiting the pumping of a gas 89 1999
6,302,653 Methods and systems for detecting the presence of a gas in a pump and preventing a gas from being pumped from a pump 113 1999
6,663,359 Pump chamber having at least one spacer for inhibiting the pumping of a gas 58 2002
6,808,369 System for regulating fluid pump pressures 52 2002
7,544,179 System and method for delivering a target volume of fluid 20 2003
6,749,403 Methods for controlling a pump's flow rate by pulsed discharge 51 2003
8,158,102 System, device, and method for mixing a substance with a liquid 0 2003
7,662,139 Pump cassette with spiking assembly 5 2003
7,632,078 Pump cassette bank 21 2003
7,632,080 Bezel assembly for pneumatic control 24 2003
7,461,968 System, device, and method for mixing liquids 18 2003
7,354,190 Two-stage mixing system, apparatus, and method 0 2003
7,559,524 Tube occluder for occluding collapsible tubes 28 2004
7,421,316 Method and device for regulating fluid pump pressures 9 2004
8,292,594 Fluid pumping systems, devices and methods 3 2007
8,366,655 Peritoneal dialysis sensor apparatus systems, devices and methods 1 2007
8,317,492 Pumping cassette 3 2007
8,273,049 Pumping cassette 6 2007
7,967,022 Cassette system integrated apparatus 16 2007
8,491,184 Sensor apparatus systems, devices and methods 1 2008
8,246,826 Hemodialysis systems and methods 6 2008
8,042,563 Cassette system integrated apparatus 14 2008
7,853,362 Method and device for regulating fluid pump pressures 0 2008
8,562,834 Modular assembly for a portable hemodialysis system 0 2008
8,425,471 Reagent supply for a hemodialysis system 1 2008
8,393,690 Enclosure for a portable hemodialysis system 1 2008
8,357,298 Hemodialysis systems and methods 2 2008
D664660 Dialysis machine 2 2009
D631548 Door for dialysis machine 1 2009
D629906 Interface for dialysis machine 1 2009
D623289 Disposable fluid handling cassette 0 2009
D616539 Disposable fluid handling cassette 10 2009
D615189 Disposable fluid handling cassette 4 2009
D615190 Membrane for fluid handling cassette 2 2009
7,766,301 Tube occluder and method for occluding collapsible tubes 5 2009
8,409,441 Blood treatment systems and methods 1 2009
D650896 Disposable fluid handling cassette 3 2009
8,366,316 Sensor apparatus systems, devices and methods 2 2010
8,556,225 Pump chamber configured to contain a residual fluid volume for inhibiting the pumping of a gas 0 2010
D663844 Door for dialysis machine 0 2011
8,459,292 Cassette system integrated apparatus 0 2011
8,499,780 Cassette system integrated apparatus 0 2011
8,545,698 Hemodialysis systems and methods 0 2012
 
FENWAL, INC. (12)
7,041,076 Blood separation systems and methods using a multiple function pump station to perform different on-line processing tasks 13 1999
6,949,079 Programmable, fluid pressure actuated blood processing systems and methods 46 1999
6,759,007 Blood processing systems and methods employing fluid pressure actuated pumps and valves 26 1999
6,723,062 Fluid pressure actuated blood pumping systems and methods with continuous inflow and pulsatile outflow conditions 33 1999
6,481,980 Fluid flow cassette with pressure actuated pump and valve stations 34 1999
6,325,775 Self-contained, transportable blood processsing device 52 1999
6,875,191 Blood processing systems and methods that alternate flow of blood component and additive solution through an in-line leukofilter 5 2001
6,846,161 Blood component processing systems and methods using fluid-actuated pumping elements that are integrity tested prior to use 21 2002
6,716,004 Blood processing systems with fluid flow cassette with a pressure actuated pump chamber and in-line air trap 17 2002
7,004,727 Blood component processing systems and methods using fluid-actuated pumping elements that are integrity tested prior to use 7 2004
7,357,897 Blood processing systems and methods that alternate flow of blood component and additive solution through an in-line leukofilter 0 2005
7,195,607 Programmable, fluid pressure actuated blood processing systems and methods 24 2005
 
FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH (5)
8,142,653 Medical fluid cassettes and related systems 0 2009
8,377,293 Dialysis fluid cassettes and related systems and methods 0 2011
8,692,167 Medical device heaters 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
 
FRESENIUS MEDICAL CARE HOLDINGS, INC. (5)
7,935,074 Cassette system for peritoneal dialysis machine 20 2006
7,892,197 Automatic prime of an extracorporeal blood circuit 13 2007
8,182,692 Solutions, dialysates, and related methods 0 2008
8,192,401 Medical fluid pump systems and related components and methods 0 2010
D645157 Heater tray for balance bag 1 2011
 
HOSPIRA, INC. (4)
6,497,680 Method for compensating for pressure differences across valves in cassette type IV pump 15 1999
6,942,636 Method for compensating for pressure differences across valves in cassette type IV pump 16 2002
7,407,489 Methods for compensating for pressure differences across valves in IV pumps 6 2005
7,402,154 Method for compensating for pressure differences across valves in cassette type IV pump 6 2005
 
VALERITAS, INC. (4)
7,530,968 Hydraulically actuated pump for long duration medicament administration 16 2004
7,914,499 Multi-cartridge fluid delivery device 10 2007
8,070,726 Hydraulically actuated pump for long duration medicament administration 3 2008
8,361,053 Multi-cartridge fluid delivery device 0 2011
 
HONEYWELL INTERNATIONAL INC. (2)
7,789,851 Heating solutions for fluid media 0 2008
7,988,666 Broadband infrared heating of medical fluids 1 2009
 
TANDEM DIABETES CARE, INC. (2)
8,287,495 Infusion pump system with disposable cartridge having pressure venting and pressure feedback 2 2011
8,298,184 Infusion pump system with disposable cartridge having pressure venting and pressure feedback 2 2011
 
THE COMFORT GROUP, INC. (2)
6,197,197 Method for fluid delivery in a dialysis clinic 4 1998
6,506,301 Apparatus for fluid delivery in a dialysis clinic 0 2000
 
KUFBAG, INCORPORATED (1)
D615191 Disposable fluid handling cassette 4 2009
 
LIFELINE SCIENTIFIC, INC. (1)
D685498 Organ or tissue cradle 0 2012
 
THERAKOS, INC. (1)
6,491,656 Integrated cassette for controlling fluid having an integral filter 77 1997
 
WALKMED INFUSION LLC (1)
7,914,490 Ambulatory infusion pump assembly and housing therefor 0 2009
 
Other [Check patent profile for assignment information] (2)
D484599 Polyclean dialysis station 0 2002
8,460,234 Automatic hydrating device for invalids and the disabled 0 2006