WO2001037899A3 - Extracorporeal circuits for performing hemofiltration employing pressure sensing without an air interface - Google Patents

Extracorporeal circuits for performing hemofiltration employing pressure sensing without an air interface Download PDF

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Publication number
WO2001037899A3
WO2001037899A3 PCT/US2000/042355 US0042355W WO0137899A3 WO 2001037899 A3 WO2001037899 A3 WO 2001037899A3 US 0042355 W US0042355 W US 0042355W WO 0137899 A3 WO0137899 A3 WO 0137899A3
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WO
WIPO (PCT)
Prior art keywords
air interface
pressure sensing
flow channel
employing pressure
extracorporeal circuits
Prior art date
Application number
PCT/US2000/042355
Other languages
French (fr)
Other versions
WO2001037899A2 (en
Inventor
James M Brugger
Jeffrey H Burbank
Dennis M Treu
Original Assignee
Nxstage Medical Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/800,881 external-priority patent/US20010016699A1/en
Priority claimed from US09/512,927 external-priority patent/US6589482B1/en
Application filed by Nxstage Medical Inc filed Critical Nxstage Medical Inc
Priority to AU32731/01A priority Critical patent/AU3273101A/en
Priority claimed from US09/865,905 external-priority patent/US6852090B2/en
Publication of WO2001037899A2 publication Critical patent/WO2001037899A2/en
Publication of WO2001037899A3 publication Critical patent/WO2001037899A3/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/34—Filtering material out of the blood by passing it through a membrane, i.e. hemofiltration or diafiltration
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
    • A61M1/16—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis with membranes
    • A61M1/1621—Constructional aspects thereof
    • A61M1/1635—Constructional aspects thereof with volume chamber balancing devices between used and fresh dialysis fluid
    • A61M1/1639—Constructional aspects thereof with volume chamber balancing devices between used and fresh dialysis fluid linked by membranes
    • A—HUMAN NECESSITIES
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    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/34—Filtering material out of the blood by passing it through a membrane, i.e. hemofiltration or diafiltration
    • A61M1/3403—Regulation parameters
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    • A—HUMAN NECESSITIES
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    • A—HUMAN NECESSITIES
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    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/60—General characteristics of the apparatus with identification means
    • A61M2205/6018—General characteristics of the apparatus with identification means providing set-up signals for the apparatus configuration
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/60—General characteristics of the apparatus with identification means
    • A61M2205/6063—Optical identification systems
    • A61M2205/6072—Bar codes

Abstract

An extracorporeal fluid circuit (16) for performing hemofiltration defines within a flexible panel a flow channel that is free of an air interface. The flexible panel includes an in-line sensor (32) region through which fluid pressure in the flow channel can be measured by an external sensor. The systems and methods enable sensing fluid pressure through the in-line sensor region using the external sensor. The flow channel can convey, e.g., waste from the hemofilter or replacement fluid for return to the individual.
PCT/US2000/042355 1997-02-14 2000-11-29 Extracorporeal circuits for performing hemofiltration employing pressure sensing without an air interface WO2001037899A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU32731/01A AU3273101A (en) 1997-02-14 2000-11-29 Extracorporeal circuits for performing hemofiltration employing pressure sensingwithout an air interface

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
US08/800,881 US20010016699A1 (en) 1997-02-14 1997-02-14 Hemofiltration system
US45123899A 1999-11-29 1999-11-29
US09/451,238 1999-11-29
US09/512,927 2000-02-25
US09/512,927 US6589482B1 (en) 1997-02-14 2000-02-25 Extracorporeal circuits for performing hemofiltration employing pressure sensing without an air interface
US09/513,773 US6579253B1 (en) 1997-02-14 2000-02-25 Fluid processing systems and methods using extracorporeal fluid flow panels oriented within a cartridge
US09/865,905 US6852090B2 (en) 1997-02-14 2001-05-24 Fluid processing systems and methods using extracorporeal fluid flow panels oriented within a cartridge
US09/894,236 US6955655B2 (en) 1997-02-14 2001-06-27 Hemofiltration system
US10/649,582 US7473238B2 (en) 1997-02-14 2003-08-27 Hemofiltration systems and methods that maintain sterile extracorporeal processing conditions

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WO2001037899A2 WO2001037899A2 (en) 2001-05-31
WO2001037899A3 true WO2001037899A3 (en) 2001-12-27

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PCT/US2000/042355 WO2001037899A2 (en) 1997-02-14 2000-11-29 Extracorporeal circuits for performing hemofiltration employing pressure sensing without an air interface
PCT/US2000/042356 WO2001037786A2 (en) 1997-02-14 2000-11-29 Fluid processing systems and methods using extracorporeal fluid flow panels oriented within a cartridge

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EP (1) EP1235613B1 (en)
JP (1) JP4416368B2 (en)
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US7473238B2 (en) 2009-01-06
US20050045548A1 (en) 2005-03-03
JP2003518964A (en) 2003-06-17
WO2001037786A3 (en) 2002-02-21
WO2001037899A2 (en) 2001-05-31
WO2001037786A9 (en) 2002-12-12
AU3273201A (en) 2001-06-04
EP1235613B1 (en) 2011-02-09
JP4416368B2 (en) 2010-02-17
AU3273101A (en) 2001-06-04
WO2001037786A2 (en) 2001-05-31
EP1235613A4 (en) 2009-08-12

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