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WO2009033462A1 - Dispositif de préparation de gaz anesthésiant - Google Patents

Dispositif de préparation de gaz anesthésiant Download PDF

Info

Publication number
WO2009033462A1
WO2009033462A1 PCT/DE2008/001499 DE2008001499W WO2009033462A1 WO 2009033462 A1 WO2009033462 A1 WO 2009033462A1 DE 2008001499 W DE2008001499 W DE 2008001499W WO 2009033462 A1 WO2009033462 A1 WO 2009033462A1
Authority
WO
WIPO (PCT)
Prior art keywords
anesthetic
gas
control
valve
pressure
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/DE2008/001499
Other languages
German (de)
English (en)
Inventor
Karl Cornelius-Lorenz
Kirsten Klein
Thomas Kriesmer
Klaus Züchner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TECHNOLOGIE INSTITUT MEDIZIN (TIM) GmbH
Original Assignee
TECHNOLOGIE INSTITUT MEDIZIN (TIM) GmbH
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 TECHNOLOGIE INSTITUT MEDIZIN (TIM) GmbH filed Critical TECHNOLOGIE INSTITUT MEDIZIN (TIM) GmbH
Priority to DE112008003093T priority Critical patent/DE112008003093A5/de
Publication of WO2009033462A1 publication Critical patent/WO2009033462A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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. 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
    • A61M16/18—Vaporising devices for anaesthetic preparations
    • 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
    • A61M16/18—Vaporising devices for anaesthetic preparations
    • A61M16/183—Filling systems
    • 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
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3331—Pressure; Flow
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3379—Masses, volumes, levels of fluids in reservoirs, flow rates
    • A61M2205/3382—Upper level detectors
    • 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
    • A61M2205/3379—Masses, volumes, levels of fluids in reservoirs, flow rates
    • A61M2205/3386—Low level detectors

Definitions

  • the invention relates to a device for providing anesthetic gas according to the preamble of claim 1.
  • anesthetic gas is added to fresh gas.
  • the anesthetic gas may, for example, be isoflurane, secoflurane, desflurane, enflurane, halothane or diethyl ether, which is available in liquid form in commercial packaging.
  • Anesthesia devices are known in which fresh gas is partially passed through an evaporation vessel filled with liquid anesthetic and thereby accumulates with evaporating anesthetic.
  • the metering takes place via a combination of a direct supply of fresh gas and a fresh gas supplied via the evaporation vessel.
  • the dosage control is expensive here.
  • the invention has for its object to provide a device for providing anesthetic gas that provides saturated gas.
  • a storage container is at the same time part of an anesthetic evaporator and pressure generator.
  • the heating ensures that the liquid anesthetic is heated above its boiling point and enforces forced evaporation.
  • a vapor pressure is formed, which is used to convey the narcotic gas that has now formed to the point of consumption. Since the evaporation takes place without any support of carrier gases, pure anesthetic gas is produced without the addition of carrier gas, which facilitates the dosage adjustment in the subsequent admixing with the fresh gas. Namely, the mixing ratio can then be adjusted exclusively via the ratio of the volume flow between fresh gas and anesthetic gas.
  • a carrier gas content does not have to be considered in contrast to known embodiments.
  • an anesthetic gas already present in the gas phase can be metered more precisely than via the detour of the propulsion pump, in which only the delivery volume of the liquid phase can be adjusted.
  • a constant delivery pressure of the anesthetic gas can be specified. It is also possible to adapt to different anesthetic agents with different boiling points and vapor pressures without hardware changes.
  • the storage container consists of an anesthetic-resistant material or is internally coated with an anesthetic-resistant material.
  • the anesthetics listed at the beginning have solvent properties which attack various plastics as well as metals, and this effect increases with increasing temperature.
  • the flow restrictor arrangement may comprise at least one valve controlled by the control and regulating device.
  • a first valve may be a proportional valve or a pulsed valve.
  • a second valve may be an openable and closable safety valve.
  • level sensors can be arranged in the storage container and connected to the control and regulating device. These can then together with at least one controlled valve form a safety device against leakage of liquid anesthetic.
  • the device according to the invention is also suitable for mobile use due to the possibility of a very compact design, there is a risk in transporting a patient that the reservoir can occupy a position which is inappropriate in terms of the risk of leakage of liquid anesthetic and thus of overdosing of a patient is given theoretically.
  • the safety device such a state is detected in good time and turned off the device.
  • a further improvement provides an embodiment in which the gas pressure chamber is designed as a dome before the anesthetic gas discharge and in the dome additional level sensors are arranged and connected to the control and regulating device.
  • the storage vessel can assume larger tilt angles, without the risk of leakage of liquid anesthetic.
  • the additionally arranged in the cathedral level sensors secure the case that even these increased tilt angle are exceeded.
  • the storage container can simultaneously be an anesthetic-filled commercial packaging and form a disposable storage container.
  • the reservoir may be a refill reservoir and having a fill port disposed in the fluid space connected to a filler.
  • this embodiment may prove more favorable.
  • the filling device preferably comprises a commercial packaging filled with anesthetic, to the nozzle of which an outlet line leading to the storage container and a compressed-air line coming from a gas supply unit are connected.
  • a controllable valve, a liquid sensor and a temperature sensor are arranged in the outlet, which are connected to the control and regulating device.
  • a control port of the gas supply unit is also connected to the control and regulating device.
  • the reservoir can be refilled with anesthetic if necessary.
  • the refilling takes place here directly from the commercial packaging as needed.
  • FIG. 1 shows a device according to the invention with refill option for feeding a respiratory system with anesthetic gas
  • Fig. 2 shows an embodiment of the device as a disposable reservoir
  • Fig. 3 shows an embodiment of a reservoir with a dome and 4 and 5 representations of the reservoir in different tilting inclinations.
  • a conveying and metering device 1 consists essentially of a reservoir 3, a controlled by a control and regulating device 9 heater 5 and connected to the control and regulating device 9 temperature sensor 8.
  • the reservoir 3 is provided with a Heat insulation 4 jacketed and sealed to the atmosphere.
  • the storage container 3 is subdivided into a liquid space 27 and a gas pressure space 28.
  • liquid space 27 is liquid anesthetic 2
  • the vaporized portion of the anesthetic is anesthetic gas.
  • an anesthetic gas discharge 10 with a flow restrictor arrangement of a safety valve 11 and a controllable valve 12 leads to a consumer, shown here as a microcirculation system 25 and patient 26th
  • Liquid anesthetic 2 is heated by the heater 5 and evaporated.
  • anesthetic gas with an overpressure.
  • the pressure could be determined once by knowing the parameters of the anesthetic via the temperature sensor 8, as direct pressure but also via the pressure sensor 6.
  • a volume flow in the outlet conduit 10 could already be determined as a function of the pressure of the anesthetic gas ,
  • the flow sensor 13 determines a volume flow directly and can, depending on a set value, the actual volume flow rate. current via the control and regulating device 9 and the proportional valve or clocked valve 12 set.
  • the level can be monitored and controlled by the control and regulating device 9 are adapted from a filling device.
  • the level sensors 7 in conjunction with the control and regulating device 9 and the safety valve 11 form a safety device against leakage of liquid anesthetic.
  • a filling device consisting of a filled with anesthetic 15 commercial packaging 14. At its spout a leading to the reservoir 3 outlet 16 and a coming from a gas supply unit 20 compressed air line 23 is connected.
  • a controllable valve 19 In the outlet line 16 are a controllable valve 19, a liquid sensor 17 and a temperature sensor 1, which are all connected to the control and control unit 9.
  • a control connection of the gas supply unit 20 is also connected to the regulation and control unit 9.
  • the level is monitored. If the level is too low, the valve 19 is opened so that anesthetic 15 can flow from the commercial packaging 14. In addition, if the discharge pressure is insufficient, the gas supply unit 20 is turned on.
  • This consists of a pump 21 and a suction filter 22.
  • a control valve 24 is still arranged in the pressure line 23.
  • the in the outlet 16 The temperature sensor 18 determines the temperature of the inflowing liquid anesthetic so that by appropriate control of the heater 5, the boiling point of the anesthetic 2 in the reservoir 3 again quickly reached becomes.
  • the device comprises a storage container 32, which at the same time is an anesthetic-filled commercial packaging and a disposable storage container.
  • a storage container 32 which at the same time is an anesthetic-filled commercial packaging and a disposable storage container.
  • This embodiment corresponds to that of Figure 1 with the exception of the filling connection and the filling device.
  • the gas pressure space 28 is formed before the anesthetic gas discharge 10 as a dome 30, a central gas channel being arranged between the dome 30 and the remaining part of the gas pressure space 28.
  • Dom 30 more level sensors 7 are arranged.
  • FIG. 5 shows a more critical tilting position, in which anesthetic 2 has also penetrated into the dome 30.
  • the level sensors 7 arranged in the dome 30 respond and close the safety valve 11.
  • the semipermeable membrane 31 allows an unimpeded transfer of liquid anesthetic into the outlet line and thus a strong overdose of a patient with anesthetic.

Landscapes

  • Health & Medical Sciences (AREA)
  • Anesthesiology (AREA)
  • Emergency Medicine (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (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)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

La présente invention concerne un dispositif de préparation de gaz anesthésiant. Le dispositif est composé d'un réservoir et d'un dispositif de transport et de dosage qui produit, grâce à une température élevée, la pression de vapeur d'agent anesthésiant servant d'énergie d'entraînement pour conduire la vapeur d'agent anesthésiant saturée et qui ne nécessite donc aucune alimentation externe en gaz de transport ou en gaz frais. Le dispositif comprend un évaporateur d'agent anesthésiant et générateur de pression d'agent anesthésiant commandé en température et/ou en pression, qui est composé du réservoir lui-même, un système de chauffage régulé par un dispositif de commande et de régulation, ainsi que des capteurs de température et/ou de pression qui sont reliés au dispositif de commande et de régulation. Le réservoir est thermo-isolé, clos par rapport à l'atmosphère et divisé en une chambre à liquide et en une chambre à pression de gaz. Le système de chauffage et le capteur de température sont raccordés à la chambre à pression de gaz par voie pneumatique de manière thermoconductrice avec la chambre à liquide et le capteur de pression. Une conduite de sortie d'agent anesthésiant comportant un dispositif d'étranglement d'écoulement est raccordée à la chambre à pression de gaz.
PCT/DE2008/001499 2007-09-10 2008-09-09 Dispositif de préparation de gaz anesthésiant Ceased WO2009033462A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112008003093T DE112008003093A5 (de) 2007-09-10 2008-09-09 Vorrichtung zum Bereitstellen von Narkosegas

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007042832.6 2007-09-10
DE102007042832 2007-09-10

Publications (1)

Publication Number Publication Date
WO2009033462A1 true WO2009033462A1 (fr) 2009-03-19

Family

ID=40219331

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2008/001499 Ceased WO2009033462A1 (fr) 2007-09-10 2008-09-09 Dispositif de préparation de gaz anesthésiant

Country Status (2)

Country Link
DE (1) DE112008003093A5 (fr)
WO (1) WO2009033462A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2805737A1 (fr) 2013-05-22 2014-11-26 Pall Corporation Raccord pour être utilisé dans un vaporisateur éléctronique
CN104474623A (zh) * 2014-09-26 2015-04-01 中国人民解放军总医院 吸入式麻醉蒸发过滤装置
CN105963843A (zh) * 2016-04-15 2016-09-28 杨建勇 一种智能麻醉蒸发装置
DE102021100091A1 (de) 2020-05-13 2021-11-18 Drägerwerk AG & Co. KGaA System zu Bereitstellung von Gasen zu Beatmung und Oxygenierung mit Zuführung inhalativer Substanzen
US11554231B2 (en) 2019-02-12 2023-01-17 General Electric Company Methods and systems for anesthetic agent leakage diagnostics

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2252913A (en) * 1991-02-20 1992-08-26 Draegerwerk Ag Anaesthetic dosing device
GB2253149A (en) * 1991-02-26 1992-09-02 Draegerwerk Ag Anaesthetic dosing device
GB2253353A (en) * 1991-03-06 1992-09-09 Draegerwerk Ag Dosing device for a liquid anaesthetic
WO1992019304A1 (fr) * 1991-04-26 1992-11-12 The Boc Group Plc Reservoir pour agent anesthesique liquide
EP0545567A1 (fr) * 1991-11-15 1993-06-09 Instrumentarium Corporation Méthode et appareil pour doser un gaz d'anesthésie
DE102004052731B3 (de) * 2004-10-30 2005-09-29 Dräger Medical AG & Co. KGaA Vorrichtung zum Mischen von Narkosemitteldampf mit Narkosegas

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2252913A (en) * 1991-02-20 1992-08-26 Draegerwerk Ag Anaesthetic dosing device
GB2253149A (en) * 1991-02-26 1992-09-02 Draegerwerk Ag Anaesthetic dosing device
GB2253353A (en) * 1991-03-06 1992-09-09 Draegerwerk Ag Dosing device for a liquid anaesthetic
WO1992019304A1 (fr) * 1991-04-26 1992-11-12 The Boc Group Plc Reservoir pour agent anesthesique liquide
EP0545567A1 (fr) * 1991-11-15 1993-06-09 Instrumentarium Corporation Méthode et appareil pour doser un gaz d'anesthésie
DE102004052731B3 (de) * 2004-10-30 2005-09-29 Dräger Medical AG & Co. KGaA Vorrichtung zum Mischen von Narkosemitteldampf mit Narkosegas

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2805737A1 (fr) 2013-05-22 2014-11-26 Pall Corporation Raccord pour être utilisé dans un vaporisateur éléctronique
US9320867B2 (en) 2013-05-22 2016-04-26 Pall Corporation Connection system
CN104474623A (zh) * 2014-09-26 2015-04-01 中国人民解放军总医院 吸入式麻醉蒸发过滤装置
CN105963843A (zh) * 2016-04-15 2016-09-28 杨建勇 一种智能麻醉蒸发装置
US11554231B2 (en) 2019-02-12 2023-01-17 General Electric Company Methods and systems for anesthetic agent leakage diagnostics
DE102021100091A1 (de) 2020-05-13 2021-11-18 Drägerwerk AG & Co. KGaA System zu Bereitstellung von Gasen zu Beatmung und Oxygenierung mit Zuführung inhalativer Substanzen
DE102021100090A1 (de) 2020-05-13 2021-11-18 Drägerwerk AG & Co. KGaA System zu einer Bereitstellung von Gasen oder Gasgemischen mit Zuführung von Substanzen
DE102021100091B4 (de) 2020-05-13 2022-07-14 Drägerwerk AG & Co. KGaA System zu Bereitstellung von Gasen zu Beatmung und Oxygenierung mit Zuführung inhalativer Substanzen
DE102021100090B4 (de) 2020-05-13 2023-08-10 Drägerwerk AG & Co. KGaA System zu einer Bereitstellung von Gasen oder Gasgemischen mit Zuführung von Substanzen

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Publication number Publication date
DE112008003093A5 (de) 2010-08-12

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