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)

Importance

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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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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
DEKA PRODUCTS LIMITED PARTNERSHIPMANCHESTER, NH393

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bouchard, Clement D Pembroke, NH 11 585
Bryant, Robert J Manchester, NH 26 1166
Kamen, Dean Bedford, NH 245 2419
Lanigan, Richard Concord, NH 22 1690
Miller, Bradley D Londonderry, NH 19 711
Spencer, Geoffrey P Manchester, NH 23 873
Vincent, Douglas E Manchester, NH 19 1281

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 228 1993
5,431,626 Liquid pumping mechanisms for peritoneal dialysis systems employing fluid pressure 151 1993
5,421,823 Peritoneal dialysis methods that emulate gravity flow 138 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 58 1982
 
BAXTER INTERNATIONAL INC. (1)
5,324,422 User interface for automated peritoneal dialysis systems 89 1993
 
I-FLOW CORPORATION (1)
4,950,245 Multiple fluid cartridge and pump 86 1988
 
NESTLE S.A. (1)
5,364,342 Microsurgical cassette 96 1993
 
SURGIN SURGICAL INSTRUMENTATION, INC. (1)
5,163,900 Disposable cassette systems 73 1990

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
BAXTER INTERNATIONAL INC. (55)
6,666,665 Fluid delivery mechanism having a plurality of plungers for compressing a metering chamber 17 1999
6,270,673 Door latching assembly for holding a fluid pressure actuated cassette during use 58 1999
6,471,855 Cassette with integral separation device 30 2000
6,585,499 Fluid delivery mechanism having a flush-back operation 22 2001
6,709,412 Blood processing systems and methods that employ an in-line leukofilter mounted in a restraining fixture 9 2001
7,107,837 Capacitance fluid volume measurement 34 2002
7,175,606 Disposable medical fluid unit having rigid frame 59 2002
7,153,286 Automated dialysis system 63 2002
7,115,228 One-piece tip protector and organizer 30 2002
7,087,036 Fail safe system for operating medical fluid valves 24 2002
6,939,111 Method and apparatus for controlling medical fluid pressure 32 2002
6,929,751 Vented medical fluid tip protector methods 51 2002
6,814,547 Medical fluid pump 98 2002
6,764,761 Membrane material for automated dialysis system 38 2002
7,238,164 Systems, methods and apparatuses for pumping cassette-based therapies 66 2002
6,953,323 Medical fluid pump 51 2003
7,507,220 Method for monitoring and controlling peritoneal dialysis therapy 11 2003
7,007,824 Liquid dispenser and flexible bag therefor 10 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 4 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 46 2005
7,500,962 Medical fluid machine with air purging pump 34 2005
7,410,475 Graphical user interface for automated dialysis system 32 2006
7,815,595 Automated dialysis pumping system 34 2006
7,789,849 Automated dialysis pumping system using stepper motor 22 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 4 2007
7,731,689 Dialysis system having inductive heating 0 2007
8,206,338 Pumping systems for cassette-based dialysis 3 2007
8,715,235 Dialysis system having disposable cassette and heated cassette interface 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 8 2007
8,206,339 System for monitoring and controlling peritoneal dialysis 0 2009
8,070,709 Peritoneal dialysis machine 5 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
8,858,488 Dialysis system including blood and dialysate cassette 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 7 2010
8,066,671 Automated dialysis system including a piston and stepper motor 12 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 1 2011
8,868,357 Temperature compensation for pneumatic pumping system 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
8,740,836 Pumping systems for cassette-based dialysis 0 2013
8,740,837 Pumping systems for cassette-based dialysis 0 2013
 
DEKA PRODUCTS LIMITED PARTNERSHIP (55)
6,905,479 Pumping cartridge having an integrated filter and method for filtering a fluid with the cartridge 56 1999
6,877,713 Tube occluder and method for occluding collapsible tubes 65 1999
6,604,908 Methods and systems for pulsed delivery of fluids from a pump 74 1999
6,485,263 Systems for determining the volume of a volumetric chamber and pumping a fluid with a pump chamber 67 1999
6,416,293 Pumping cartridge including a bypass valve and method for directing flow in a pumping cartridge 171 1999
6,382,923 Pump chamber having at least one spacer for inhibiting the pumping of a gas 108 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 130 1999
6,663,359 Pump chamber having at least one spacer for inhibiting the pumping of a gas 71 2002
6,808,369 System for regulating fluid pump pressures 65 2002
7,544,179 System and method for delivering a target volume of fluid 26 2003
6,749,403 Methods for controlling a pump's flow rate by pulsed discharge 67 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 27 2003
7,632,080 Bezel assembly for pneumatic control 29 2003
7,461,968 System, device, and method for mixing liquids 22 2003
7,354,190 Two-stage mixing system, apparatus, and method 0 2003
7,559,524 Tube occluder for occluding collapsible tubes 34 2004
7,421,316 Method and device for regulating fluid pump pressures 11 2004
8,292,594 Fluid pumping systems, devices and methods 8 2007
8,366,655 Peritoneal dialysis sensor apparatus systems, devices and methods 3 2007
8,317,492 Pumping cassette 7 2007
8,273,049 Pumping cassette 10 2007
7,967,022 Cassette system integrated apparatus 22 2007
8,821,475 System and method for delivering a target volume of fluid 0 2007
8,491,184 Sensor apparatus systems, devices and methods 5 2008
8,246,826 Hemodialysis systems and methods 10 2008
8,042,563 Cassette system integrated apparatus 18 2008
7,853,362 Method and device for regulating fluid pump pressures 0 2008
8,863,772 Occluder for a medical infusion system 0 2008
8,771,508 Dialyzer cartridge mounting arrangement for a hemodialysis system 0 2008
8,562,834 Modular assembly for a portable hemodialysis system 3 2008
8,425,471 Reagent supply for a hemodialysis system 5 2008
8,393,690 Enclosure for a portable hemodialysis system 5 2008
8,357,298 Hemodialysis systems and methods 6 2008
8,840,581 Disposable components for fluid line autoconnect systems and methods 0 2009
D664660 Dialysis machine 10 2009
D631548 Door for dialysis machine 9 2009
D629906 Interface for dialysis machine 9 2009
D623289 Disposable fluid handling cassette 0 2009
D616539 Disposable fluid handling cassette 11 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 7 2009
8,409,441 Blood treatment systems and methods 5 2009
D650896 Disposable fluid handling cassette 4 2009
8,366,316 Sensor apparatus systems, devices and methods 4 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 8 2011
8,459,292 Cassette system integrated apparatus 4 2011
8,708,950 Medical treatment system and methods using a plurality of fluid lines 0 2011
8,499,780 Cassette system integrated apparatus 4 2011
8,721,884 Hemodialysis systems and methods 0 2012
8,545,698 Hemodialysis systems and methods 4 2012
8,721,879 Hemodialysis systems and methods 0 2013
 
FENWAL, INC. (13)
7,041,076 Blood separation systems and methods using a multiple function pump station to perform different on-line processing tasks 17 1999
6,949,079 Programmable, fluid pressure actuated blood processing systems and methods 58 1999
6,759,007 Blood processing systems and methods employing fluid pressure actuated pumps and valves 30 1999
6,723,062 Fluid pressure actuated blood pumping systems and methods with continuous inflow and pulsatile outflow conditions 41 1999
6,481,980 Fluid flow cassette with pressure actuated pump and valve stations 40 1999
6,325,775 Self-contained, transportable blood processsing device 57 1999
6,875,191 Blood processing systems and methods that alternate flow of blood component and additive solution through an in-line leukofilter 7 2001
6,846,161 Blood component processing systems and methods using fluid-actuated pumping elements that are integrity tested prior to use 27 2002
6,716,004 Blood processing systems with fluid flow cassette with a pressure actuated pump chamber and in-line air trap 21 2002
7,004,727 Blood component processing systems and methods using fluid-actuated pumping elements that are integrity tested prior to use 9 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 29 2005
8,758,288 Gasket for use with fluid processing cassette 0 2011
 
FRESENIUS MEDICAL CARE HOLDINGS, INC. (7)
7,935,074 Cassette system for peritoneal dialysis machine 26 2006
7,892,197 Automatic prime of an extracorporeal blood circuit 16 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
8,720,913 Portable peritoneal dialysis carts and related systems 0 2010
D645157 Heater tray for balance bag 1 2011
8,784,359 Cassette system for peritoneal dialysis machine 0 2011
 
FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH (6)
8,142,653 Medical fluid cassettes and related systems 1 2009
8,377,293 Dialysis fluid cassettes and related systems and methods 0 2011
8,692,167 Medical device heaters and methods 0 2011
8,721,883 Medical fluid cassettes and related systems 0 2012
8,435,408 Medical fluid cassettes and related systems 2 2012
8,366,921 Dialysis systems and related methods 1 2012
 
HOSPIRA, INC. (4)
6,497,680 Method for compensating for pressure differences across valves in cassette type IV pump 18 1999
6,942,636 Method for compensating for pressure differences across valves in cassette type IV pump 18 2002
7,407,489 Methods for compensating for pressure differences across valves in IV pumps 7 2005
7,402,154 Method for compensating for pressure differences across valves in cassette type IV pump 7 2005
 
VALERITAS, INC. (4)
7,530,968 Hydraulically actuated pump for long duration medicament administration 21 2004
7,914,499 Multi-cartridge fluid delivery device 14 2007
8,070,726 Hydraulically actuated pump for long duration medicament administration 4 2008
8,361,053 Multi-cartridge fluid delivery device 0 2011
 
TANDEM DIABETES CARE, INC. (3)
8,758,323 Infusion pump system with disposable cartridge having pressure venting and pressure feedback 0 2010
8,287,495 Infusion pump system with disposable cartridge having pressure venting and pressure feedback 4 2011
8,298,184 Infusion pump system with disposable cartridge having pressure venting and pressure feedback 4 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
 
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 5 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 92 1997
 
VALERITAS LLC (1)
8,821,443 Multi-cartridge fluid delivery device 0 2012
 
WALKMED INFUSION LLC (1)
7,914,490 Ambulatory infusion pump assembly and housing therefor 0 2009
 
Other [Check patent profile for assignment information] (5)
D484599 Polyclean dialysis station 0 2002
8,460,234 Automatic hydrating device for invalids and the disabled 0 2006
8,870,811 Peritoneal dialysis systems and related methods 0 2006
8,870,812 Dialysis system having video display with ambient light adjustment 0 2007
8,870,549 Fluid pumping systems, devices and methods 0 2012