CA2488957A1 - Access pressure ratio device and testing method - Google Patents

Access pressure ratio device and testing method Download PDF

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Publication number
CA2488957A1
CA2488957A1 CA002488957A CA2488957A CA2488957A1 CA 2488957 A1 CA2488957 A1 CA 2488957A1 CA 002488957 A CA002488957 A CA 002488957A CA 2488957 A CA2488957 A CA 2488957A CA 2488957 A1 CA2488957 A1 CA 2488957A1
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CA
Canada
Prior art keywords
algorithm
blood pressure
blood
irregular
detecting
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002488957A
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French (fr)
Other versions
CA2488957C (en
Inventor
Stanley Frinak
Gerard Zasuwa
Jerry Yee
Anatole Besarab
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Henry Ford Health System
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2488957A1 publication Critical patent/CA2488957A1/en
Application granted granted Critical
Publication of CA2488957C publication Critical patent/CA2488957C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/41—Detecting, measuring or recording for evaluating the immune or lymphatic systems
    • A61B5/413—Monitoring transplanted tissue or organ, e.g. for possible rejection reactions after a transplant
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/021—Measuring pressure in heart or blood vessels
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/41—Detecting, measuring or recording for evaluating the immune or lymphatic systems
    • A61B5/411—Detecting or monitoring allergy or intolerance reactions to an allergenic agent or substance
    • 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
    • A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
    • A61M1/3621—Extra-corporeal blood circuits
    • A61M1/3639—Blood pressure control, pressure transducers specially adapted therefor
    • 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
    • A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
    • A61M1/3621—Extra-corporeal blood circuits
    • A61M1/3639—Blood pressure control, pressure transducers specially adapted therefor
    • A61M1/3641—Pressure isolators
    • 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
    • A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
    • A61M1/3621—Extra-corporeal blood circuits
    • A61M1/3653—Interfaces between patient blood circulation and extra-corporal blood circuit
    • 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
    • A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
    • A61M1/3621—Extra-corporeal blood circuits
    • A61M1/3653—Interfaces between patient blood circulation and extra-corporal blood circuit
    • A61M1/3656—Monitoring patency or flow at connection sites; Detecting disconnections
    • 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
    • A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
    • A61M1/3621—Extra-corporeal blood circuits
    • A61M1/3653—Interfaces between patient blood circulation and extra-corporal blood circuit
    • A61M1/3659—Cannulae pertaining to extracorporeal circulation
    • 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
    • A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
    • A61M1/3621—Extra-corporeal blood circuits
    • A61M1/3653—Interfaces between patient blood circulation and extra-corporal blood circuit
    • A61M1/3659—Cannulae pertaining to extracorporeal circulation
    • A61M1/3661—Cannulae pertaining to extracorporeal circulation for haemodialysis
    • 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
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3331—Pressure; Flow

Abstract

The present invention discloses a detection device for detecting irregular intravascular pressure, the device including an analyzer for automatically analyzing intravascular pressure upstream of the suspected location of irregular blood flow, and a comparing device that correlates the recorded intravascular pressure to a standard whereby variation in the intravascular pressure during multiple tests is indicative of irregular blood flow. Also disclosed is a system for providing a warning of potential health problems d ue to irregular blood flow, the system including a detecting device as set fort h above and a communicating device operatively connected to the detecting devi ce for communicating a warning when the device indicates an irregularity of intravascular pressure during at least two uses of the device.

Claims (23)

1. A detection device for detecting irregular intravascular pressure, said device comprising analyzing means for automatically analyzing blood pressure upstream of a suspected location of irregular blood flow and comparing the blood pressure to a standard, whereby variations in the blood pressure during multiple tests is indicative of irregular blood flow.
2. The device according to claim 1, wherein said analyzing means is computer driven.
3. The device according to claim 1, wherein said analyzing means is an equation.
4. The device according to claim 3, wherein said equation is an algorithm that estimates pressure inside a blood access site, thereby detecting irregular blood flow.
5. The device according to claim 4, wherein said algorithm calculates the ratio between venous blood pressure and mean arterial pressure.
6. The device according to claim 1 for use in detecting potential access failure.
7. The device according to claim 1 for use in detecting risk of stroke.
8. The device according to claim 1 for use in detecting risk of heart attack.
9. The device according to claim 1 for use in detecting risk of stenosis.
10. A method of detecting irregular blood flow by calculating blood pressure upstream of a suspected location of irregular blood flow and comparing the blood pressure to a standard, whereby elevation of the blood pressure over a series of calculations indicates a restricted blood flow.
11. The method of claim 10, wherein said calculating step includes automatically calculating blood pressure.
12. The method of claim 10, wherein said comparing step includes automatically comparing the blood pressure to a standard.
13. The method of claim 12, wherein said automatically comparing step further includes automatically comparing the blood pressure to a standard using an algorithm.
14. The method of claim 10, wherein said calculating step includes automatically calculating blood pressure during a procedure.
15. A system for providing warning of potential health problems due to irregular intravascular pressure, said system comprising: a detection device according to claim 1; and communication means operably connected to said device for communicating a warning when said device indicates an irregularity of blood pressure of at least two uses of said device.
16. The system according to claim 15, wherein said communication means is selected from the group consisting essentially of electronic communications, facsimile, telephone, cable modem, and T1 connection.
17. An algorithm for detecting irregular intravascular pressure.
18. The algorithm according to claim 17, wherein said algorithm is used in conjunction with an integrated circuit.
19. The algorithm according to claim 17, wherein said algorithm is used to monitor pressure variations in any type of system used to transport blood into an extracorporeal circuit.
20. The algorithm according to claim 17, wherein said algorithm is utilized as an alarm system in extracorporeal blood treatment and infusion technology circuits.
21. The algorithm according to claim 17, wherein said algorithm is used to develop an alarm system for any fluid transporting device or fluid transporting system, whereby said algorithm determines an alarm level based on the rate of fluid flow through a device that is part of the alarm system and physical properties of fluid transported through the device. The alarm level can be set at any value that insures safe operation of the device.
22. An alarm system for use with the algorithm set for in claim 17 for use in any fluid transporting device or fluid transporting system, said alarm system comprising an alarm, wherein said algorithm determines an alarm level based on the rate of fluid flow through a device that is part of the alarm system and physical properties of fluid transported through the device and an alarm is set off based on said algorithm.
23. The alarm system according to claim 22, wherein said alarm level can be set at any value that insures safe operation of the device,
CA2488957A 2001-07-30 2002-07-29 Access pressure ratio device and testing method Expired - Lifetime CA2488957C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US30887201P 2001-07-30 2001-07-30
US60/308,872 2001-07-30
PCT/US2002/023958 WO2003011108A2 (en) 2001-07-30 2002-07-29 Access pressure ratio device and testing method

Publications (2)

Publication Number Publication Date
CA2488957A1 true CA2488957A1 (en) 2003-02-13
CA2488957C CA2488957C (en) 2011-09-20

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Family Applications (1)

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CA2488957A Expired - Lifetime CA2488957C (en) 2001-07-30 2002-07-29 Access pressure ratio device and testing method

Country Status (6)

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US (1) US7597666B2 (en)
EP (1) EP1419369B1 (en)
AU (1) AU2002322730A1 (en)
CA (1) CA2488957C (en)
ES (1) ES2501165T3 (en)
WO (1) WO2003011108A2 (en)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8348850B2 (en) * 2001-07-30 2013-01-08 Henry Ford Health System Method of monitoring dislodgement of venous needles in dialysis patients
US8974394B2 (en) 2001-07-30 2015-03-10 Henry Ford Health System Device and method for detecting irregular placement of an extracorporeal vascular access needle
US8517990B2 (en) 2007-12-18 2013-08-27 Hospira, Inc. User interface improvements for medical devices
ITMO20080159A1 (en) * 2008-05-27 2009-11-28 Gambro Lundia Ab MEDICAL FLUID CIRCUIT.
AU2009262505B2 (en) * 2008-06-26 2014-08-07 Gambro Lundia Ab Method and device for processing a time-dependent measurement signal
DE102008061122A1 (en) * 2008-12-09 2010-06-17 Fresenius Medical Care Deutschland Gmbh Method and device for determining and / or monitoring a physical condition, in particular a cardiovascular size, of a patient based on an amplitude of a pressure signal
WO2011080188A1 (en) * 2009-12-28 2011-07-07 Gambro Lundia Ab Method and device for detecting a configuration of withdrawal and return devices
CA2844807C (en) 2011-08-19 2022-07-26 Hospira, Inc. Systems and methods for a graphical interface including a graphical representation of medical data
US9101316B2 (en) * 2011-11-30 2015-08-11 General Electric Company Portable radiation detector and system
US10022498B2 (en) 2011-12-16 2018-07-17 Icu Medical, Inc. System for monitoring and delivering medication to a patient and method of using the same to minimize the risks associated with automated therapy
JP6306566B2 (en) 2012-03-30 2018-04-04 アイシーユー・メディカル・インコーポレーテッド Air detection system and method for detecting air in an infusion system pump
ES2743160T3 (en) 2012-07-31 2020-02-18 Icu Medical Inc Patient care system for critical medications
WO2014107656A1 (en) 2013-01-07 2014-07-10 Henry Ford Health System Device and method for detecting irregular placement of an extracorporeal vascular access needle
WO2014190264A1 (en) 2013-05-24 2014-11-27 Hospira, Inc. Multi-sensor infusion system for detecting air or an occlusion in the infusion system
ES2838450T3 (en) 2013-05-29 2021-07-02 Icu Medical Inc Infusion set that uses one or more sensors and additional information to make an air determination relative to the infusion set
AU2014274122A1 (en) 2013-05-29 2016-01-21 Icu Medical, Inc. Infusion system and method of use which prevents over-saturation of an analog-to-digital converter
US20150048578A1 (en) * 2013-08-13 2015-02-19 Powerslide Sportartikelvertriebs Gmbh Arrangement for a two-track roller skate
JP6636442B2 (en) 2014-02-28 2020-01-29 アイシーユー・メディカル・インコーポレーテッド Infusion systems and methods utilizing dual wavelength optical in-pipe air detection
AU2015266706B2 (en) 2014-05-29 2020-01-30 Icu Medical, Inc. Infusion system and pump with configurable closed loop delivery rate catch-up
US11344668B2 (en) 2014-12-19 2022-05-31 Icu Medical, Inc. Infusion system with concurrent TPN/insulin infusion
US10850024B2 (en) 2015-03-02 2020-12-01 Icu Medical, Inc. Infusion system, device, and method having advanced infusion features
EP3454922B1 (en) 2016-05-13 2022-04-06 ICU Medical, Inc. Infusion pump system with common line auto flush
CA3027176A1 (en) 2016-06-10 2017-12-14 Icu Medical, Inc. Acoustic flow sensor for continuous medication flow measurements and feedback control of infusion
EP3468638A4 (en) * 2016-06-13 2020-01-15 Henry Ford Health System Method for detecting intravascular volume depletion during a hemodialysis session
EP3478337B1 (en) * 2016-06-30 2021-01-06 Gambro Lundia AB Detection of a disruption of a fluid connection between two fluid containing systems
WO2018053461A1 (en) 2016-09-19 2018-03-22 Henry Ford Health System System and method of monitoring dislodgement of venous needles in dialysis patients
EP3501571B1 (en) 2017-12-22 2024-04-10 Baxter International Inc. Infusion set for measuring vital signals of a patient comprising a compliance element and a reflective element
US10089055B1 (en) 2017-12-27 2018-10-02 Icu Medical, Inc. Synchronized display of screen content on networked devices
US10916349B2 (en) 2018-09-21 2021-02-09 Henry Ford Health System Method for determining vascular access risk in a hemodialysis patient population
US11278671B2 (en) 2019-12-04 2022-03-22 Icu Medical, Inc. Infusion pump with safety sequence keypad
WO2022020184A1 (en) 2020-07-21 2022-01-27 Icu Medical, Inc. Fluid transfer devices and methods of use
US11135360B1 (en) 2020-12-07 2021-10-05 Icu Medical, Inc. Concurrent infusion with common line auto flush

Family Cites Families (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3946731A (en) * 1971-01-20 1976-03-30 Lichtenstein Eric Stefan Apparatus for extracorporeal treatment of blood
JPS5033676A (en) * 1973-07-30 1975-03-31
US4303068A (en) * 1978-02-28 1981-12-01 Rensselaer Polythechnic Institute Method and apparatus for single pass hemodialysis with high flux membranes and controlled ultrafiltration
US4466804A (en) * 1981-09-25 1984-08-21 Tsunekazu Hino Extracorporeal circulation of blood
US4531941A (en) * 1982-09-08 1985-07-30 Henry Ford Hospital Method and apparatus for administering blood
JPS59156325A (en) * 1983-02-25 1984-09-05 株式会社　ウエダ製作所 Indirect blood pressure measuring apparatus
US4710164A (en) * 1984-05-01 1987-12-01 Henry Ford Hospital Automated hemodialysis control based upon patient blood pressure and heart rate
US4677984A (en) * 1984-09-24 1987-07-07 Bomed Medical Manufacturing, Ltd. Calibrated arterial pressure measurement device
US4828543A (en) * 1986-04-03 1989-05-09 Weiss Paul I Extracorporeal circulation apparatus
US4735212A (en) * 1986-07-01 1988-04-05 Cordis Corporation Multiple site fiber optic pressure transducer
US5178603A (en) * 1990-07-24 1993-01-12 Baxter International, Inc. Blood extraction and reinfusion flow control system and method
US6471872B2 (en) * 1991-10-11 2002-10-29 Children's Hospital Medical Center Hemofiltration system and method based on monitored patient parameters
US5454374A (en) 1992-01-17 1995-10-03 Omachi; Rodney S. Pressure-measuring method and needle system for hemodialysis
US5873835A (en) * 1993-04-29 1999-02-23 Scimed Life Systems, Inc. Intravascular pressure and flow sensor
US5533511A (en) * 1994-01-05 1996-07-09 Vital Insite, Incorporated Apparatus and method for noninvasive blood pressure measurement
US6371921B1 (en) * 1994-04-15 2002-04-16 Masimo Corporation System and method of determining whether to recalibrate a blood pressure monitor
US5453576A (en) * 1994-10-24 1995-09-26 Transonic Systems Inc. Cardiovascular measurements by sound velocity dilution
SE508374C2 (en) * 1995-09-12 1998-09-28 Gambro Med Tech Ab Method and apparatus for detecting the condition of a blood vessel access
US5749364A (en) * 1996-06-21 1998-05-12 Acuson Corporation Method and apparatus for mapping pressure and tissue properties
FI972067A0 (en) * 1997-05-14 1997-05-14 Tiit Koeoebi Apparaturer ocffaranden Foer utvaendig maetning av physiologiska parametar
EP1079727A1 (en) * 1998-05-04 2001-03-07 Florence Medical Ltd. Apparatus and method for identification and characterization of lesions and therapeutic success by flow disturbances analysis
DE19848235C1 (en) * 1998-10-20 2000-03-16 Fresenius Medical Care De Gmbh Method for monitoring supply to vessel and extra-corporeal blood treatment device for monitoring supply to vessel; inputs blood circulation pressure to computer to calculate values to identify errors in supply during dialysis
US6383158B1 (en) * 1998-12-01 2002-05-07 Dsu Medical Corporation Dialysis pressure monitoring with clot suppression
DE19901078C1 (en) * 1999-01-14 2000-02-17 Polaschegg Hans Dietrich Monitoring system for fistula or graft has instruments to detect pulse from patient's heart or external blood circulation pump
DE19917197C1 (en) * 1999-04-16 2000-07-27 Fresenius Medical Care De Gmbh Method to determine blood flow in vessel entrance of haemodialysis unit; involves measuring arterial and venous pressures when vessel entrance is open to allow blood flow and closed to prevent blood flow
US6517508B1 (en) * 1999-11-03 2003-02-11 Dsu Medical Corporation Set for blood processing
DE10103048A1 (en) * 2001-01-24 2002-07-25 Braun Melsungen Ag Therapy apparatus for extracorporeal blood cleaning has blood pressure measuring device, and replaces blood pressure measurements with hypothetical values at some time points
DE10115991C1 (en) * 2001-03-30 2002-04-18 Fresenius Medical Care De Gmbh Detecting constrictions in blood circulation system involves analyzing frequency spectrum of oscillating pressure signal, forming conclusion regarding constriction from harmonic damping
WO2004002553A1 (en) * 2002-06-27 2004-01-08 Koninklijke Philips Electronics N.V. Method for calculating filter clogging factor and bed-side system
CA2514239C (en) * 2003-01-28 2012-03-20 Gambro Lundia Ab An apparatus and method for monitoring a vascular access of a patient
JP4373684B2 (en) * 2003-02-19 2009-11-25 株式会社フィリップスエレクトロニクスジャパン Filter clogging monitoring device and bedside system
CA2537104A1 (en) * 2003-08-28 2005-03-10 Institut De Cardiologie De Montreal Catherter for measuring an intraventricular pressure and method of using same
JP4094600B2 (en) * 2004-10-06 2008-06-04 日機装株式会社 Blood purification equipment

Also Published As

Publication number Publication date
US7597666B2 (en) 2009-10-06
EP1419369B1 (en) 2014-08-20
US20060272421A1 (en) 2006-12-07
ES2501165T3 (en) 2014-10-01
AU2002322730A1 (en) 2003-02-17
WO2003011108A3 (en) 2004-02-26
EP1419369A2 (en) 2004-05-19
WO2003011108A2 (en) 2003-02-13
EP1419369A4 (en) 2006-04-19
CA2488957C (en) 2011-09-20

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