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1. WO2011017033 - AUTOMATIC CONTROL SYSTEM FOR MECHANICAL VENTILATION FOR ACTIVE OR PASSIVE SUBJECTS

Publication Number WO/2011/017033
Publication Date 10.02.2011
International Application No. PCT/US2010/043170
International Filing Date 24.07.2010
IPC
A61M 16/00 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES 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
16Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
G06F 17/10 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
17Digital computing or data processing equipment or methods, specially adapted for specific functions
10Complex mathematical operations
G05B 19/18 2006.01
GPHYSICS
05CONTROLLING; REGULATING
BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
19Programme-control systems
02electric
18Numerical control (NC), i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
G06Q 50/00 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
QDATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES, NOT OTHERWISE PROVIDED FOR
50Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
CPC
A61B 5/0816
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Detecting, measuring or recording for diagnostic purposes
08Detecting, measuring or recording devices for evaluating the respiratory organs
0816Measuring devices for examining respiratory frequency
A61B 5/0836
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Detecting, measuring or recording for diagnostic purposes
08Detecting, measuring or recording devices for evaluating the respiratory organs
083Measuring rate of metabolism by using breath test, e.g. measuring rate of oxygen consumption
0836Measuring rate of CO2 production
A61B 5/085
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Detecting, measuring or recording for diagnostic purposes
08Detecting, measuring or recording devices for evaluating the respiratory organs
085Measuring impedance of respiratory organs or lung elasticity
A61B 5/087
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Detecting, measuring or recording for diagnostic purposes
08Detecting, measuring or recording devices for evaluating the respiratory organs
087Measuring breath flow
A61B 5/091
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Detecting, measuring or recording for diagnostic purposes
08Detecting, measuring or recording devices for evaluating the respiratory organs
091Measuring volume of inspired or expired gases, e.g. to determine lung capacity
A61B 5/4836
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Detecting, measuring or recording for diagnostic purposes
48Other medical applications
4836Diagnosis combined with treatment in closed-loop systems or methods
Applicants
  • TEHRANI, Fleur, T. [US]/[US]
Inventors
  • TEHRANI, Fleur, T.
Agents
  • BURDICK, Sean, D.
Priority Data
12/509,45725.07.2009US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) AUTOMATIC CONTROL SYSTEM FOR MECHANICAL VENTILATION FOR ACTIVE OR PASSIVE SUBJECTS
(FR) SYSTÈME DE COMMANDE AUTOMATIQUE POUR VENTILATION MÉCANIQUE POUR DES SUJETS ACTIFS OU PASSIFS
Abstract
(EN)
A method and an apparatus for controlling a ventilator to automatically adjust ventilation assistance to an active or passive subject. The method includes determining volume and flow rate of gas to the patient during inspiration on an ongoing basis, and generating control signals in proportion to the volume and flow rate of gas to the patient wherein proportionality factors, and support levels for the elastic and resistive components of pressure are automatically adjusted by the ventilator. The ongoing pressure applied by the ventilator is a sum of elastic and resistive pressures that are automatically controlled by the system. When the patient breathes spontaneously, the support levels are automatically adjusted based on the patient's requirements. If the patient does not breathe spontaneously, the ventilator provides ventilation at an optimal level and rate. The method may be used in weaning or in a management phase of ventilation.
(FR)
L'invention concerne un procédé et un appareil pour la commande d'un ventilateur afin d'ajuster automatiquement une assistance de ventilation à un sujet actif ou passif. Le procédé comprend les opérations consistant à déterminer le volume et le débit de gaz adressé au patient durant une inspiration sur une base continue, et à générer des signaux de commande en proportion du volume et du débit de gaz adressé au patient, des facteurs de proportionnalité et des niveaux d'entretien pour les composants de pression élastiques et résistifs étant automatiquement ajustés par le ventilateur. La pression continue appliquée par le ventilateur est une somme des pressions élastique et résistive qui sont automatiquement commandées par le système. Lorsque le patient respire spontanément, les niveaux d'entretien sont ajustés automatiquement en fonction des exigences du patient. Si le patient ne respire pas spontanément, le ventilateur fournit une ventilation à un niveau optimal et à une fréquence optimale. Le procédé peut être utilisé dans un sevrage ou dans une phase de gestion de ventilation.
Also published as
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