DK3028732T3 - Kontrol af rumtemperaturen i en befugter til nøjagtig fugtighedskontrol - Google Patents

Kontrol af rumtemperaturen i en befugter til nøjagtig fugtighedskontrol Download PDF

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DK3028732T3
DK3028732T3 DK16150408.9T DK16150408T DK3028732T3 DK 3028732 T3 DK3028732 T3 DK 3028732T3 DK 16150408 T DK16150408 T DK 16150408T DK 3028732 T3 DK3028732 T3 DK 3028732T3
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gases
temperature
flow
controller
user
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DK16150408.9T
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Stanislav Tatkov
Christopher Malcolm Crone
Peter Hawkins
Jae Chul Han
Kevin Peter O'donnell
Andrew Robert Donald Somervell
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Fisher & Paykel Healthcare Ltd
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    • 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. ventilators; Tracheal tubes
    • A61M16/0051—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; 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. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/1075—Preparation of respiratory gases or vapours by influencing the temperature
    • A61M16/1085—Preparation of respiratory gases or vapours by influencing the temperature after being humidified or mixed with a beneficial agent
    • 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. ventilators; Tracheal tubes
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M16/0009—Accessories therefor, e.g. sensors, vibrators, negative pressure with sub-atmospheric pressure, e.g. during expiration
    • A61M16/0012—Accessories therefor, e.g. sensors, vibrators, negative pressure with sub-atmospheric pressure, e.g. during expiration by Venturi means
    • 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. ventilators; 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. ventilators; Tracheal tubes
    • A61M16/021—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; 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. ventilators; Tracheal tubes
    • A61M16/04—Tracheal tubes
    • A61M16/0465—Tracheostomy tubes; Devices for performing a tracheostomy; Accessories therefor, e.g. masks, filters
    • 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. ventilators; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks
    • A61M16/0666—Nasal cannulas or tubing
    • 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. ventilators; Tracheal tubes
    • A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
    • A61M16/0875—Connecting 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. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/1075—Preparation of respiratory gases or vapours by influencing the 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/1075—Preparation of respiratory gases or vapours by influencing the temperature
    • A61M16/109—Preparation of respiratory gases or vapours by influencing the temperature the humidifying liquid or the beneficial agent
    • 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. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/1075—Preparation of respiratory gases or vapours by influencing the temperature
    • A61M16/1095—Preparation of respiratory gases or vapours by influencing the temperature in the connecting 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. ventilators; 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
    • 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. ventilators; 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. ventilators; Tracheal tubes
    • A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
    • A61M16/0816—Joints or connectors
    • A61M16/0841—Joints or connectors for 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

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  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Public Health (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Emergency Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Veterinary Medicine (AREA)
  • Otolaryngology (AREA)
  • Air Humidification (AREA)
  • Air Conditioning Control Device (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Control Of Non-Electrical Variables (AREA)

Claims (15)

1. Andedrætshjælpesystem (1, 100, 200) til levering af en strøm af opvarmede, befugtede gasser til en bruger til terapeutiske formål, hvilket system omfatter: en befugtningsenhed (5, 105, 205), som har en indløbsport (23, 123, 223) og en udgangsport (9, 109, 209), hvilken befugtingsenhed er beregnet til under brug at modtage en strømning af gasser fra kilde af gasser (13, 113, 213) gennem indløbsporten, hvilken befugtningsenhed desuden er beregnet til at holde og opvarme et volumen vand (20, 120, 220) under brug, hvilken strømning af gasser under brug passerer gennem befugtningsenheden og bliver opvarmet og befugtet, hvilke opvarmede, befugtede gasser forlader befugtningsenheden gennem befugtningsenhedens udgangsport, en udløbsledning (6, 106, 206) og en brugergrænseflade (7, 107, 207), der er konfigureret til under brug at modtage de opvarmede, befugtede gasser fra udgangsporten til levering til brugeren, hvilken udløbsledning har en varmetråd (75), der er beregnet til at opvarme gasserne i ledningen, en strømningssonde (61, 161, 261), der er beregnet til at måle den aktuelle strømningshastighed af strømmen af gasserne gennem systemet, en temperatursensor ved patientens ende (15, 115, 215), der er beregnet til at måle temperaturen af strømningen af gasserne ved eller tæt på patienten, og hvilket åndedrætshjælpesystem desuden omfatter en controller (8, 108, 208), der er beregnet til at modtage data fra temperatursensoren ved patientens ende (15, 115, 215) vedrørende den målte temperatur og data fra strømningssonden (61, 161, 261) vedrørende den aktuelle strømningshastighed, hvilken controller (8, 108, 208) medfører et kontroloutput som respons, hvori kontroloutputtet vedrører en måltemperatur ved temperatursensoren ved patientens ende for et givet strømningsniveau, hvilket kontroloutput justerer strømmen til i det mindste varmetråden (75) for at opretholde eller ændre temperaturen af udstrømningen af gasser i ledningen (6, 106, 206) for at få den temperatur, der måles af temperatursensoren ved patientens ende (15, 115, 215), til at matche måltemperaturen for at opnå en ønsket temperatur ved patientens ende ved brugergrænsefladen (7, 107, 207).
2. Åndedrætshjælpesystem ifølge krav 1, hvori kontroloutputtet justerer strømmen til i det mindste varmetråden (75) for at opretholde eller ændre temperaturen af strømningen af gasser i ledningen (6, 106, 206) for at opnå en ønsket temperatur ved patientens ende og en ønsket absolut fugtighed ved grænsefladen (7, 107, 207).
3. Åndedrætshjælpesystem ifølge krav 1 eller 2, hvor systemet også har en omgivelsestemperatursensor (60, 160, 260), der er beregnet til at måle temperaturen af gasser ved et punkt, før gasserne kommer ind i befugtningsenheden (5, 105, 205), idet controlleren (8, 108, 208) desuden er beregnet til at modtage data fra omgivelsestemperatursensoren og anvende dataene til at bestemme kontroloutputtet.
4. Åndedrætshjælpesystem ifølge et hvilket som helst af kravene 1 til 3, hvori kontroloutputtet bestemmes ud fra et regelbaseret system, der er indlæst i controlleren (8, 108, 208), eller ud fra mindst én matematisk formel, der er indlæst i controlleren, eller fra en opslagstabel, der er indlæst i controlleren.
5. Åndedrætshjælpesystem ifølge krav 2, hvori den ønskede fugtighed er en brugerindstillet mål-dugpunktstemperatur.
6. Åndedrætshjælpesystem ifølge krav 5, hvori den brugerindstillede mål-dugpunktstemperatur ligger i området 31-38 °C.
7. Åndedrætshjælpesystem ifølge krav 5 eller 6, hvori den brugerindstillede mål-dupunktstemperatur giver et absolut fugtighedsniveau på i alt væsentligt 44 mg H2O / liter luft.
8. Åndedrætshjælpesystem ifølge krav 3, hvori omgivelsestemperatursensoren (60, 160, 260) er placeret ved eller tæt på indløbsporten (23, 123, 223) for at måle temperaturen af gasser, i alt væsentligt når de kommer ind i befugtningsenheden (5, 105, 205).
9. Åndedrætshjælpesystem ifølge et hvilket som helst af kravene 1 til 8, hvori åndedrætshjælpesystemet desuden omfatter en udgangsport-temperatursensor (63, 163, 263), der er beregnet til at måle temperaturen af gasser, som forlader befugtningsenheden (5, 105, 205), idet controlleren (8, 108, 208) desuden er beregnet til at modtage udgangsportdata fra udgangsport-temperatursensoren vedrørende den målte temperatur, og idet controlleren desuden anvender udgangsportdataene til at bestemme kontroloutputtet.
10. Åndedrætshjælpesy stem ifølge et hvilket som helst af kravene 1 til 9, hvori åndedrætshjælpesystemet også har en fugtighedssensor (50, 150, 250), der er beregnet til at måle fugtigheden i atmosfæriske gasser, som kommer ind i åndedrætshjælpesystemet, idet controlleren modtager data vedrørende den målte fugtighed, og idet controlleren bestemmer kontroloutputtet ved også at anvende dataene vedrørende den målte fugtighed.
11. Åndedrætshjælpesystem ifølge et hvilket som helst af kravene 1 til 10, hvori systemet også har en tryksensor (80, 180, 280), der er beregnet til at måle trykket af atmosfæriske gasser, som kommer ind i åndedrætshjælpesystemet, idet controlleren modtager data vedrørende det målte tryk, og idet controlleren bestemmer kontroloutputtet ved også at anvende dataene vedrørende det målte tryk.
12. Åndedrætshjælpesystem ifølge et hvilket som helst af kravene 1 til 11, hvori åndedrætshjælpesystemets apparatur desuden omfatter en kontrolenhed (202), der er beregnet til under brug at modtage en strømning af gasser fra en fjern centralkilde (1000), hvilken kontrolenhed (202) befinder sig i gassernes rute mellem centralkilden (1000) og befugtningsenheden (205), idet kontrolenheden modtager strømningen af gasser og passerer strømningen til befugtningsenheden via en gasforbindelsesrute (204) mellem befugtningsenheden og kontrolenheden, og idet kontrolenheden også har brugerkontroller (211), der er beregnet til at sætte en bruger i stand til at indstille en ønsket brugerindstillet strømningshastighed.
13. Åndedrætshjælpesystem ifølge krav 12, hvori kontrolenheden desuden omfatter en venturi (90), der er beregnet til at blande strømningen af gasser fra centralkilden (1000) med atmosfæriske gasser, inden disse føres til befugtningsenheden (205).
14. Åndedrætshjælpesystem ifølge et hvilket som helst af kravene 1 til 11, hvori gaskilden er en blæseenhed (3), der i brug er fluidmæssigt forbundet til befugtningsenheden (5), hvilken blæseenhed (3) har en ventilationsenhed (13) med indstillelig variabel hastighed, der er beregnet til at levere strømningen af gasser over et område af strømningshastigheder til befugtningsenheden (5), og brugerkontroller (11), der er beregnet til at sætte en bruger i stand til at indstille en ønsket brugerindstillet strømningshastighed, idet controlleren (8) er beregnet til at styre strømmen til blæserenheden (3) for at frembringe den brugerindstillede strømningshastighed.
15. Andedrætshjælpesystem ifølge et hvilket som helst af kravene 1 til 14, hvori temperatursensoren ved patientens ende (14, 115, 215) befinder sig ved eller tæt på patientens ende af udløbsledningen (6, 106, 206), og gasserne i slutningen af udløbsledningen kommer ind i en mindre sekundær, uopvarmet leveringsslange (69).
DK16150408.9T 2008-05-27 2009-05-27 Kontrol af rumtemperaturen i en befugter til nøjagtig fugtighedskontrol DK3028732T3 (da)

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Application Number Priority Date Filing Date Title
US5633508P 2008-05-27 2008-05-27
EP09755102.2A EP2300088B1 (en) 2008-05-27 2009-05-27 Control of humidifier chamber temperature for accurate humidity control

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DK09755102.2T DK2300088T3 (da) 2008-05-27 2009-05-27 Styring af temperaturen i et luftbefugtningskammer til nøjagtig fugtstyring

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US (5) US8616202B2 (da)
EP (6) EP3028732B1 (da)
JP (6) JP5930165B2 (da)
CN (8) CN116617509A (da)
AU (1) AU2009251939B2 (da)
CA (3) CA3051967C (da)
DK (2) DK3028732T3 (da)
ES (4) ES2683235T3 (da)
PT (1) PT3756719T (da)
WO (1) WO2009145646A1 (da)

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