WO2002026287A3 - Carbon dioxide-based bi-level cpap control - Google Patents

Carbon dioxide-based bi-level cpap control Download PDF

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Publication number
WO2002026287A3
WO2002026287A3 PCT/US2001/030768 US0130768W WO0226287A3 WO 2002026287 A3 WO2002026287 A3 WO 2002026287A3 US 0130768 W US0130768 W US 0130768W WO 0226287 A3 WO0226287 A3 WO 0226287A3
Authority
WO
WIPO (PCT)
Prior art keywords
carbon
dioxide
patient
carbon dioxide
level
Prior art date
Application number
PCT/US2001/030768
Other languages
French (fr)
Other versions
WO2002026287A2 (en
Inventor
Joseph B Ii Richey
Original Assignee
Invacare Corp
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 Invacare Corp filed Critical Invacare Corp
Priority to AU9320301A priority Critical patent/AU9320301A/en
Priority to NZ524990A priority patent/NZ524990A/en
Priority to AU2001293203A priority patent/AU2001293203B2/en
Priority to CA002421808A priority patent/CA2421808C/en
Priority to EP01973647A priority patent/EP1322367A4/en
Publication of WO2002026287A2 publication Critical patent/WO2002026287A2/en
Publication of WO2002026287A3 publication Critical patent/WO2002026287A3/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
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/14—Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
    • A61M16/16—Devices to humidify the respiration air
    • A61M16/161—Devices to humidify the respiration air with means for measuring the humidity
    • 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
    • A61M16/0066—Blowers or centrifugal pumps
    • A61M16/0069—Blowers or centrifugal pumps the speed thereof being controlled by respiratory parameters, e.g. by inhalation
    • 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
    • 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
    • A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
    • A61M16/0816—Joints or connectors
    • A61M16/0841—Joints or connectors for sampling
    • A61M16/085—Gas sampling
    • 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
    • A61M2205/3368—Temperature
    • 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
    • A61M2230/43—Composition of exhalation
    • A61M2230/432—Composition of exhalation partial CO2 pressure (P-CO2)

Abstract

A system and method of providing bi-level CPAP therapy is provided that incorporates an infrared carbon-dioxide sensor (124) to determine whether a patient is inhaling or exhaling. Patient exhalation causes the infrared light to be absorbed, while patient inhalation reduces the presence of carbon-dioxide causes little or no absorption of carbon-dioxide. The level of carbon-dioxide in an associated patient breathing interface is monitored for thresholds that trigger higher CPAP pressure upon inhalation and lower CPAP pressure upon exhalation.
PCT/US2001/030768 2000-09-28 2001-09-27 Carbon dioxide-based bi-level cpap control WO2002026287A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AU9320301A AU9320301A (en) 2000-09-28 2001-09-27 Carbon dioxide-based bi-level cpap control
NZ524990A NZ524990A (en) 2000-09-28 2001-09-27 Carbon dioxide-based BI-level CPAP control
AU2001293203A AU2001293203B2 (en) 2000-09-28 2001-09-27 Carbon dioxide-based bi-level CPAP control
CA002421808A CA2421808C (en) 2000-09-28 2001-09-27 Carbon dioxide-based bi-level cpap control
EP01973647A EP1322367A4 (en) 2000-09-28 2001-09-27 Carbon dioxide-based bi-level cpap control

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US23612300P 2000-09-28 2000-09-28
US60/236,123 2000-09-28

Publications (2)

Publication Number Publication Date
WO2002026287A2 WO2002026287A2 (en) 2002-04-04
WO2002026287A3 true WO2002026287A3 (en) 2002-08-22

Family

ID=22888216

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/030768 WO2002026287A2 (en) 2000-09-28 2001-09-27 Carbon dioxide-based bi-level cpap control

Country Status (6)

Country Link
US (2) US6990980B2 (en)
EP (1) EP1322367A4 (en)
AU (2) AU2001293203B2 (en)
CA (1) CA2421808C (en)
NZ (1) NZ524990A (en)
WO (1) WO2002026287A2 (en)

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CA2421808A1 (en) 2002-04-04
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US8640701B2 (en) 2014-02-04
EP1322367A4 (en) 2009-08-26
US6990980B2 (en) 2006-01-31
WO2002026287A2 (en) 2002-04-04
AU9320301A (en) 2002-04-08
EP1322367A2 (en) 2003-07-02
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US20050279358A1 (en) 2005-12-22
AU2001293203B2 (en) 2004-12-02

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