WO2005051280A3 - Method and apparatus for controlling a ventilator - Google Patents

Method and apparatus for controlling a ventilator Download PDF

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Publication number
WO2005051280A3
WO2005051280A3 PCT/US2004/035393 US2004035393W WO2005051280A3 WO 2005051280 A3 WO2005051280 A3 WO 2005051280A3 US 2004035393 W US2004035393 W US 2004035393W WO 2005051280 A3 WO2005051280 A3 WO 2005051280A3
Authority
WO
WIPO (PCT)
Prior art keywords
patient
input data
controller
data indicative
respiratory
Prior art date
Application number
PCT/US2004/035393
Other languages
French (fr)
Other versions
WO2005051280A2 (en
Inventor
Fleur T Tehrani
Original Assignee
Fleur T Tehrani
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
Family has litigation
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Application filed by Fleur T Tehrani filed Critical Fleur T Tehrani
Priority to CA2545570A priority Critical patent/CA2545570C/en
Priority to NZ546941A priority patent/NZ546941A/en
Priority to GB0611065A priority patent/GB2423721B/en
Priority to AU2004292955A priority patent/AU2004292955B2/en
Publication of WO2005051280A2 publication Critical patent/WO2005051280A2/en
Publication of WO2005051280A3 publication Critical patent/WO2005051280A3/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
    • A61M16/021—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
    • 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
    • A61M16/0057—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
    • A61M2202/00—Special media to be introduced, removed or treated
    • A61M2202/02—Gases
    • A61M2202/0208—Oxygen
    • 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
    • A61M2230/20—Blood composition characteristics
    • A61M2230/205—Blood composition characteristics partial oxygen pressure (P-O2)
    • 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)
    • 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
    • A61M2230/435—Composition of exhalation partial O2 pressure (P-O2)

Landscapes

  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

Method and apparatus for controlling a ventilator are described. The invention can be used to control mechanical ventilators (56) as well as respiratory assist devices such as CPAP machines. The apparatus receives input data indicative of patient's oxygen level. A controller (10) determines PEEP, or CPAP, and FIO2, on the basis of data indicative of the patient's oxygen level. In an alternative embodiment, the apparatus further receives input data indicative of patient's carbon dioxide levels, respiratory elastance and airway resistance, and barometric pressure. The controller further utilizes the said input data to determine the optimal values of tidal volume and breathing frequency for a next breath of the patient, and uses the respiratory elastance and airway resistance data to determine any necessary adjustments in the I:E ratio. The controller also applies safety rules, detects and corrects artifacts, and generates warning signals when needed.
PCT/US2004/035393 2003-11-21 2004-10-25 Method and apparatus for controlling a ventilator WO2005051280A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA2545570A CA2545570C (en) 2003-11-21 2004-10-25 Method and apparatus for controlling a ventilator
NZ546941A NZ546941A (en) 2003-11-21 2004-10-25 Method and apparatus for controlling a ventilator
GB0611065A GB2423721B (en) 2003-11-21 2004-10-25 Method and apparatus for controlling a ventilator
AU2004292955A AU2004292955B2 (en) 2003-11-21 2004-10-25 Method and apparatus for controlling a ventilator

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US48169303P 2003-11-21 2003-11-21
US60/481,693 2003-11-21
US10/935,446 US7802571B2 (en) 2003-11-21 2004-09-07 Method and apparatus for controlling a ventilator
US10/935,446 2004-09-07

Publications (2)

Publication Number Publication Date
WO2005051280A2 WO2005051280A2 (en) 2005-06-09
WO2005051280A3 true WO2005051280A3 (en) 2006-05-26

Family

ID=34594521

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/035393 WO2005051280A2 (en) 2003-11-21 2004-10-25 Method and apparatus for controlling a ventilator

Country Status (6)

Country Link
US (1) US7802571B2 (en)
AU (1) AU2004292955B2 (en)
CA (1) CA2545570C (en)
GB (1) GB2423721B (en)
NZ (1) NZ546941A (en)
WO (1) WO2005051280A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104834326A (en) * 2015-04-01 2015-08-12 深圳市科曼医疗设备有限公司 Breathing machine oxygen concentration control method, device and system

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* Cited by examiner, † Cited by third party
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US20050109340A1 (en) 2005-05-26

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