WO2001083014A3 - Method and apparatus for determining respiratory system resistance during assisted ventilation - Google Patents

Method and apparatus for determining respiratory system resistance during assisted ventilation Download PDF

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Publication number
WO2001083014A3
WO2001083014A3 PCT/CA2001/000578 CA0100578W WO0183014A3 WO 2001083014 A3 WO2001083014 A3 WO 2001083014A3 CA 0100578 W CA0100578 W CA 0100578W WO 0183014 A3 WO0183014 A3 WO 0183014A3
Authority
WO
WIPO (PCT)
Prior art keywords
respiratory system
system resistance
paw
dot
resistance during
Prior art date
Application number
PCT/CA2001/000578
Other languages
French (fr)
Other versions
WO2001083014A2 (en
Inventor
Magdy Younes
Original Assignee
Univ Manitoba
Magdy Younes
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
Application filed by Univ Manitoba, Magdy Younes filed Critical Univ Manitoba
Priority to EP01927533.8A priority Critical patent/EP1276531B1/en
Priority to AU2001254562A priority patent/AU2001254562A1/en
Priority to US10/258,348 priority patent/US6837242B2/en
Priority to JP2001579885A priority patent/JP3713240B2/en
Priority to CA2407159A priority patent/CA2407159C/en
Publication of WO2001083014A2 publication Critical patent/WO2001083014A2/en
Publication of WO2001083014A3 publication Critical patent/WO2001083014A3/en

Links

Classifications

    • 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0057—Pumps therefor
    • A61M16/0063—Compressors
    • 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/021—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes operated by electrical means
    • A61M16/022—Control means therefor
    • A61M16/024—Control means therefor including calculation means, e.g. using a processor
    • A61M16/026—Control means therefor including calculation means, e.g. using a processor specially adapted for predicting, e.g. for determining an information representative of a flow limitation during a ventilation cycle by using a root square technique or a regression analysis
    • 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0051—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes with alarm devices
    • 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/0015—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors
    • A61M2016/0018—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors electrical
    • A61M2016/0021—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors electrical with a proportional output signal, e.g. from a thermistor
    • 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/0027—Accessories therefor, e.g. sensors, vibrators, negative pressure pressure meter
    • 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
    • A61M2016/0033—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical
    • A61M2016/0036—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical in the breathing tube and used in both inspiratory and expiratory phase
    • 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
    • A61M2230/00—Measuring parameters of the user
    • A61M2230/40—Respiratory characteristics
    • A61M2230/46—Resistance or compliance of the lungs

Abstract

Method and apparatus are described for determining respiratory system resistance (R) in a patient receiving gas from a ventilator. A negative pulse in the pressure and/or flow output of the ventilator during selected inflation cycles is generated and Paw, V dot and V are measured at a point (To) near the beginning of the pulse, at a point (T1) near the trough of the negative pulse and at a point (T-1) preceding To. The value of R is calculated from the difference between Paw, V dot and V at To and at TI and where the change in patient generated pressure (Pmus) in the interval To - TI is estimated by extrapolation from the different between Paw, V dot and V and To and at T-I, in accordance with Equation 8.
PCT/CA2001/000578 2000-04-26 2001-04-25 Method and apparatus for determining respiratory system resistance during assisted ventilation WO2001083014A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP01927533.8A EP1276531B1 (en) 2000-04-26 2001-04-25 Method and apparatus for determining respiratory system resistance during assisted ventilation
AU2001254562A AU2001254562A1 (en) 2000-04-26 2001-04-25 Method and apparatus for determining respiratory system resistance during assisted ventilation
US10/258,348 US6837242B2 (en) 2000-04-26 2001-04-25 Method and apparatus for determining respiratory system resistance during assisted ventilation
JP2001579885A JP3713240B2 (en) 2000-04-26 2001-04-25 Device for determining the resistance of the respiratory system during ventilation support
CA2407159A CA2407159C (en) 2000-04-26 2001-04-25 Method and apparatus for determining respiratory system resistance during assisted ventilation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US19982400P 2000-04-26 2000-04-26
US60/199,824 2000-04-26

Publications (2)

Publication Number Publication Date
WO2001083014A2 WO2001083014A2 (en) 2001-11-08
WO2001083014A3 true WO2001083014A3 (en) 2002-01-31

Family

ID=22739177

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2001/000578 WO2001083014A2 (en) 2000-04-26 2001-04-25 Method and apparatus for determining respiratory system resistance during assisted ventilation

Country Status (6)

Country Link
US (1) US6837242B2 (en)
EP (2) EP3156092A1 (en)
JP (1) JP3713240B2 (en)
AU (1) AU2001254562A1 (en)
CA (1) CA2407159C (en)
WO (1) WO2001083014A2 (en)

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Also Published As

Publication number Publication date
JP2003531694A (en) 2003-10-28
AU2001254562A1 (en) 2001-11-12
EP1276531A2 (en) 2003-01-22
EP3156092A1 (en) 2017-04-19
WO2001083014A2 (en) 2001-11-08
EP1276531B1 (en) 2016-06-08
CA2407159A1 (en) 2001-11-08
US6837242B2 (en) 2005-01-04
CA2407159C (en) 2010-08-10
US20030159695A1 (en) 2003-08-28
JP3713240B2 (en) 2005-11-09

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