EP2205304A1 - Système de respiration sous anesthésie - Google Patents

Système de respiration sous anesthésie

Info

Publication number
EP2205304A1
EP2205304A1 EP08801977A EP08801977A EP2205304A1 EP 2205304 A1 EP2205304 A1 EP 2205304A1 EP 08801977 A EP08801977 A EP 08801977A EP 08801977 A EP08801977 A EP 08801977A EP 2205304 A1 EP2205304 A1 EP 2205304A1
Authority
EP
European Patent Office
Prior art keywords
filter
gas mixture
xenon
line
anesthetic
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.)
Withdrawn
Application number
EP08801977A
Other languages
German (de)
English (en)
Inventor
Stefan Hargasser
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP08801977A priority Critical patent/EP2205304A1/fr
Publication of EP2205304A1 publication Critical patent/EP2205304A1/fr
Withdrawn legal-status Critical Current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. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/104—Preparation of respiratory gases or vapours specially adapted for anaesthetics
    • 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
    • A61M16/0087—Environmental safety or protection means, e.g. preventing explosion
    • A61M16/009—Removing used or expired gases or anaesthetic vapours
    • 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
    • A61M16/0087—Environmental safety or protection means, e.g. preventing explosion
    • A61M16/009—Removing used or expired gases or anaesthetic vapours
    • A61M16/0093—Removing used or expired gases or anaesthetic vapours by adsorption, absorption or filtration
    • 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
    • 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
    • A61M16/1045—Devices for humidifying or heating the inspired gas by using recovered moisture or heat from the expired gas
    • 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
    • A61M16/12—Preparation of respiratory gases or vapours by mixing different gases
    • 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
    • A61M16/105—Filters
    • A61M16/106—Filters in a path
    • 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
    • A61M16/22—Carbon dioxide-absorbing devices ; Other means for removing carbon dioxide
    • 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
    • A61M2202/0291—Xenon

Definitions

  • the invention relates to an apparatus and a method for recycling anesthetics, in particular of, xenon in an anesthetic breathing system and an anesthesia ventilation system containing such an apparatus.
  • xenon as an anesthetic has been intensively discussed.
  • the narcotic effect of xenon is about 1.5 times stronger than that of nitrous oxide and has already been demonstrated in the 1940s.
  • Due to the very low blood solubility xenon is exhaled faster than conventional anesthetics. This has the advantage that the anesthetic state of a patient can be regulated with less delay and thus more effectively.
  • the patient wakes up faster after the anesthesia and then feels significantly less after-effects. Damaging side effects are not yet known, so that xenon was already approved in 2005 as an anesthetic in Germany.
  • a xenon-containing anesthetic agent is disclosed, for example, in WO 02/22116.
  • xenon usually has to be recovered in a complicated process by means of fractional liquefaction from air, which makes it a costly raw material.
  • xenon anesthetics it was therefore thought about possible ways of recovery.
  • US 2005/0235831 A1 describes an apparatus and a method for the recovery of xenon from gas mixtures used in anesthetic equipment.
  • an external device for recycling is used, which recovers the xenon from the already disposed anesthetic gas mixture with the aid of a zeolite and cleans or concentrates using vacuum and heat.
  • an object of the present invention to provide an improved method as well as an improved and / or simpler apparatus for recycling xenon in anesthesia ventilatory systems that ventilate patients, such as humans and / or all types of animals, including mammals and non-mammals, under anesthesia can. This object is achieved with the features of the claims. It is a further object of the present invention to provide an improved method as well as an improved and / or simpler apparatus for recycling anesthetics in anesthesia ventilatory systems
  • the invention is based on the idea of providing a retention filter in the conduction path of an anesthetic breathing system which can receive, hold and release anesthetic contained in the anesthetic gas, in particular xenon.
  • anesthetic in particular xenon, is internally recycled without the need for additional external devices or process steps.
  • the xenon recycling device comprises a retention filter adapted to adsorb and desorb xenon and a first conduit connected to the retention filter for directing a first respiratory gas mixture containing xenon from a patient a first flow direction through the retention filter, wherein at least a portion of the xenon remains in the retention filter.
  • the device for recycling xenon comprises a second line connected to the retention filter for conducting a second respiratory gas mixture in a second flow direction through the retention filter, wherein at least part of the xenon remaining in the retention filter is taken up and carried by the second respiratory gas mixture, and one with the first line connected lead for conducting an xenon-containing anesthetic in the first line.
  • the device furthermore has a sample gas outlet in order to supply part of the first and / or second breathing gas mixture from the first line to an analysis device.
  • an analysis device makes it possible to measure or check, for example, the xenon concentration in the respiratory gas mixture which is supplied to or exhaled by the patient, and thus ensures an adequate state of anesthesia.
  • the device preferably has a connecting line between the analysis device and the supply line in order to reintroduce the respiratory gas mixture emitted by the analysis device into the first line.
  • a filter for adjusting the temperature and / or humidity of the first and / or second breathing gas mixture can be introduced into the first line.
  • An additional carbon dioxide filter or absorber may also be provided.
  • the filter for adjusting temperature and / or humidity and / or the carbon dioxide filter are integrated together with the retention filter in a workpiece.
  • the first line at its patient end preferably opens into an endotracheal tube, a larynx mask or another mask.
  • the retention filter essentially comprises an organic or inorganic adsorbent capable of adsorbing and desorbing xenon.
  • the retention filter for oxygen, carbon dioxide and nitrogen should be substantially permeable.
  • activated carbon, silica gel, alumina, aluminum silicate, zeolite or similar materials are conceivable.
  • the proportion of the xenon flowing through in the retention filter is preferably 50-100%, more preferably 80-95%.
  • the anesthetic gas may be mixed with oxygen, halogenated anesthetics, desflurane, sevoflurane, isoflurane, enflurane, halothane or a combination of several of these substances.
  • the apparatus further comprises means for controlling the first and second flow directions.
  • Different control modes are conceivable: Preferably, the introduction of the xenon-containing anesthetic gas mixture begins at the beginning of the inspiration phase, ie the anesthetic gas flow is synchronized with the respiratory cycle of the patient.
  • the applied amount of anesthetic gas per cycle corresponds to preferably 10-80% of an inspiratory volume. This leads to a gas flow of about 20 to 60 // min.
  • a mode is provided in which a constant xenon flux is provided, which, however, reduces the efficiency of the system.
  • the present invention also relates to a xenon anesthetic breathing system comprising a device for recycling xenon as described above, means for providing the second respiratory gas mixture, means for providing the xenon-containing anesthetic and means for analyzing a withdrawn respiratory gas mixture.
  • the analysis device preferably has a device for determining the xenon concentration in the extracted breathing gas mixture.
  • devices for measuring further parameters e.g. Concentration of other anesthetic agents, be provided.
  • the determination of the oxygen concentration in the extracted breathing gas mixture is necessary.
  • a conventional apparatus can be used. This can be designed, for example, as a circulatory system which is suitable for receiving the filtered first respiratory gas mixture, passing it over a carbon dioxide filter or absorber and providing it again. But also provided are disposable systems in which the exhaled breathing gas mixture is removed and disposed of after filtering through the retention filter.
  • the present invention further provides an apparatus for recycling an anesthetic in an anesthetic breathing system.
  • the device has a retention filter that is capable of adsorbing and desorbing the anesthetic.
  • a first conduit for directing a first respiratory gas mixture coming from a patient and containing the anesthetic in a first flow direction through the retention filter, at least part of the anesthetic remaining in the retention filter.
  • a second is to the retention filter Line connected, which serves to direct a second breathing gas mixture in a second flow direction toward the patient through the retaining filter, wherein at least a portion of the remaining in the retention filter anesthetic is taken up and carried by the second breathing gas mixture.
  • the apparatus further includes a lead connected to the first lead for conducting anesthetic-containing anesthetic into the first lead, the first lead further comprising a carbon dioxide filter.
  • the carbon dioxide filter is preferably mounted in front of the xenon retention filter in relation to the first flow direction.
  • the carbon dioxide filter may be mounted behind the xenon retention filter with respect to the first flow direction.
  • anesthetic recycling apparatus may have all the features described above with respect to the xenon recycling apparatus, both individually and in combination.
  • the present invention also provides a method for recycling xenon from a xenon-containing first breathing gas mixture in an anesthetic breathing system.
  • the method comprises the steps of: passing the first breathing gas mixture through a retention filter in a first flow direction, leaving at least a portion of the xenon in the retention filter, and passing an oxygen-containing second breathing gas mixture through the retention filter in a second flow direction, wherein at least a portion of the im Retaining filter remaining xenon is discharged into the second breathing gas mixture.
  • the following additional steps are optionally provided: supply of the xenon-containing anesthetic into the second breathing gas mixture emerging from the retention filter, Taking a sample volume from the second breathing gas mixture, measuring at least the xenon concentration of the sample volume and returning the measured sample volume in the second breathing gas mixture.
  • the temperature and / or humidity of the first and / or second breathing gas mixture can be adjusted.
  • oxygen can be introduced instead of xenon.
  • the volume of oxygen introduced is preferably at least 50% of the respiratory minute volume.
  • the aim and advantage of the systems described above is to keep xenon or the anesthetic in as small a space as possible.
  • the vaporous anesthetics are distributed throughout the anesthesia ventilatory system. This fact contributes significantly to increase the consumption of anesthetics.
  • the volume of common anesthesia ventilation systems is 2.5 -3 liters. In addition, these anesthesia ventilation systems are not completely sealed, so further losses are to be expected.
  • the systems of the present invention hold the anesthetics (reflection filters only) or the entire breathing gas mixture (reflectance filter and carbon dioxide absorber) in a comparatively small confined space (200 ml and 0.8-1 liter, respectively).
  • the systems are combined with an additional gas supply and regulation, which make an anesthesia device suitable for xenon in principle from any anesthetic respiratory system / anesthetic machine.
  • the advantage is the fast and easy to implement application of expensive vapor anesthetics.
  • the conventional anesthesia ventilatory system would essentially serve only for ventilation, i. build the pressure in the ventilation system to pump the breathing gas mixture into the patient's lungs.
  • FIG. 1 shows a preferred embodiment of an apparatus according to the invention for recycling xenon
  • Fig. 2 a part of an anesthetic breathing system
  • FIG. 3 shows a variant of the preferred embodiment of a device according to the invention for recycling xenon
  • FIG. 4 shows a further embodiment of a device according to the invention for recycling xenon
  • FIG. 5 shows an alternative according to the invention of the embodiment of FIG. 1;
  • FIG. 6 shows a further alternative according to the invention of the embodiment of FIG. 1;
  • FIG. 7 shows an alternative according to the invention of the embodiment of FIG. 4; FIG. and
  • FIG. 8 shows a further alternative according to the invention of the embodiment from FIG. 4.
  • FIG. 1 schematically illustrates a preferred embodiment of a xenon recycling device according to the present invention.
  • This comprises a retention filter 1 and a first conduit 2 containing the retention filter 1 with a laryngeal mask or an endotracheal tube (not shown) at the patient end of the conduit 2 for administration connects an anesthetic gas mixture to a patient and a coming from the patient and containing xenon breathing gas mixture in a first flow direction (here: to the right) passes through the retaining filter 1.
  • a second line 3 is connected to the retaining filter 1, by means of which a second breathing gas mixture in a second flow direction (in this case: to the left) is passed through the retaining filter 1.
  • An anesthetic containing at least xenon is introduced via a feed line 4 into the first line 2.
  • DeT patient breathes on the mask, not shown, a gas mixture, which is composed of the supplied via line 3 second breathing gas mixture and the supplied via the supply line 4 anesthetic.
  • the concentration ratios of the components can be fixed via, a control.
  • the exhaled first breathing gas mixture is passed through line 2 through the retaining filter 1, wherein a portion of the xenon contained in the gas mixture is adsorbed in the retaining filter 1. In the next respiratory cycle, this adsorbed xenon can be at least partially released back into the second breathing gas mixture from line 3.
  • the device has a device 5 for exchanging heat and moisture. This allows, for example, to partially absorb the moisture contained in the exhaled breathing gas mixture and release it back into the respiratory gas mixture to be inhaled.
  • a sample outlet 6 is mounted to supply a portion of the first and / or second breathing gas mixture from the first conduit 2 to an analyzer (not shown). The latter makes it possible to measure or check, for example, the xenon concentration in the respiratory gas mixture that is supplied to or exhaled by the patient, thus ensuring an adequate state of anesthesia.
  • the attachment of the outlet 6 to the device 5 causes a thorough mixing and thus the removal of a representative sample. Optionally, however, another attachment is conceivable.
  • the device In order to recover the gas mixture analyzed by the analysis device and in particular the xenone contained therein, this is returned to the circuit after analysis.
  • the device preferably has a connection line (not shown) between the analysis device and the supply line 4 in order to reintroduce the respiratory gas mixture emitted by the analysis device into the first line 2.
  • the second line 3 is preferably connected to a branch or Y-piece 7. This allows, for example, the discharge and disposal of the spent breathing gas through the line 8 and provision of fresh breathing gas through the supply line 9.
  • the lines 8 and 9 but also via an appropriate control be. connected to each other. It is then advisable to introduce a carbon dioxide filter 10 into the circuit, for example between lines 8 and 9, for example as shown in FIG.
  • FIG. 2 schematically illustrates an anesthetic breathing system to which a device for recycling xenon can be connected via the Y-piece 7 as described above.
  • a circulatory system in which the exhaled respiratory gas mixture is circulated and substantially refreshed is provided for inhalation.
  • the mixture flows past an outlet 1 1, on which excess gas can be discharged.
  • fresh gas i. in particular oxygen, but optionally also anesthetic introduced into the circulation.
  • the ventilation apparatus 13 serves to provide the instantaneous gas flow of 20 to 60 min, which is significantly greater than the continuous inflow of fresh gas through the supply line 12, which typically moves in the order of 1 // min.
  • a carbon dioxide filter 10 the carbon dioxide enriched by the respiration process is filtered out of the breathing gas mixture.
  • the corresponding volume loss is compensated by said inflow through the supply line 12. If the influx of fresh gas through the supply line 12 is increased, for example, to the amount of respiratory minute volume, then the carbon dioxide filter 10 is unnecessary.
  • the fresh gas together with the anesthetic agent it is also possible for the fresh gas together with the anesthetic agent to be conveyed through the supply line 4 (FIG. see Figure 1).
  • the flow direction in the individual lines is regulated by corresponding valves, not shown.
  • the order of components within the circuit may vary.
  • the mixture may first be passed over the carbon dioxide filter 10.
  • FIG. 3 schematically shows a variant of the preferred embodiment according to FIG. 1, in which the device 5 for exchanging heat and moisture as well as the retention filter 1 are integrated in one piece.
  • FIGS. 5 and 6 show alternatives according to the invention of the embodiment from FIG. 1.
  • the feed line 4 has a branch, at which two, three or more feed lines 4a, 4b and 4c meet. Accordingly, for example, be introduced via the supply line 4a oxygen, while the anesthetics, eg halogenated. Anesthetics and / or xenon, are supplied via the supply line 4b. The oxygen and anesthetics then mix to form a gas mixture or vapor at the branch. This preferably has a device for mixing the gas mixture.
  • the third supply line 4c can be used to reintroduce the respiratory gas mixture emitted by the analysis device into the first line 2.
  • the supply lines 4a, 4b and 4c can also lead directly into the first line 2.
  • FIGS. 5 and 6 can be combined and modified as desired.
  • only two supply lines 4a and 4b may be present, one for the supply of oxygen and anesthetics, the other is responsible for the return of the output from the analysis device breathing gas mixture.
  • two supply lines 4a and 4b can open into a common supply line 4, as can be seen in FIG. 5, and additionally a feed line 4c open directly into the first line 2, as shown in FIG.
  • FIG. 4 schematically illustrates another preferred embodiment of a device according to the invention for recycling xenon, which can be used as a pendulum system.
  • a carbon dioxide filter or absorber 10a is provided in the first conduit 2, which is positioned in front of the retention filter 1 in relation to the exhalation direction.
  • the carbon dioxide filter 10a can also be positioned behind the retaining flap 1 or designed to be integral therewith.
  • CO 2 is merely absorbed by the carbon dioxide filter 10 a, but is not returned to the breathing gas mixture in the countercurrent direction.
  • Suitable materials for a carbon dioxide filter are, for example, calcium hydroxide, sodium hydroxide, potassium hydroxide, barium hydroxide or the like, in which CO 2 is effectively bonded.
  • a reusable carbon dioxide filter for example a zeolite, which can be reprocessed by heat treatment.
  • the device By filtering CO 2 , the device can be operated as a pendulum system, ie, the patient essentially inhales the mixture previously exhaled into the system again:
  • the volume of the first conduit 2, the carbon dioxide filter 10a and the device 5 for exchanging heat and moisture should correspond approximately to the respiratory volume and thus preferably in the range of 0.2 to 2.5 /, especially preferably in the range from 0.5 to 1.2 I.
  • the first line 2 in the region between the retention filter 1 and the carbon dioxide filter 10a is preferably provided with a correspondingly increased diameter and / or a suitable length
  • Carbon dioxide filter 10a be housed in a suitably sized housing, which then as Leitun g 2 acts, or the two filters can be integrated into the line 2.
  • oxygen is preferably provided together with xenon through the feed line 4.
  • the pendulum operation requires a near-patient supply of oxygen and possibly other anesthetics such as desflurane etc.
  • it can also be provided for a further near-patient supply line.
  • the optional sample gas outlet 6 can, as shown in FIG. 4, branch off directly from the first line 2 or, according to FIG. 1, can be attached to the device 5 for exchanging heat and moisture.
  • the carbon dioxide filter 10a, the retention filter 1, and the heat and moisture exchange means 5 are accommodated in a common housing having respective ports for the supply and discharge lines, similarly as shown in FIG.
  • the carbon dioxide filter 10a is provided relatively close to the patient according to FIG. 4, respiratory lime particles emerging from the latter can be stopped by the device 5 for exchanging heat and moisture so that they do not enter the respiratory tract of the patient.
  • the embodiment shown in FIG. 4 can be connected to a conventional anesthetic system, such as shown in FIG.
  • a conventional anesthetic system such as shown in FIG.
  • the use of the carbon dioxide filter 10 is superfluous, since already the device 10a before the retention filter 1 provides for appropriate filtering.
  • jedoph a simple pump including pressure relief valve instead of the circuit shown in Figure 2, which is adapted to generate with appropriate suction and pumping behavior, the necessary pendulum flow.
  • FIGS. 7 and 8 show alternatives according to the invention of the embodiment from FIG. 4 (analogous to FIGS. 5 and 6).
  • the supply line 4 has a branch, at which two, three or more supply lines 4a, 4b and 4c meet.
  • oxygen may be introduced via the lead 4a while the anesthetics, e.g. halogenated anesthetics and / or xenon are supplied via the supply line 4b.
  • the oxygen and anesthetics then mix to form a gas mixture or vapor at the branch.
  • This preferably has a device for mixing the gas mixture.
  • the third supply line 4c can be used to reintroduce the respiratory gas mixture emitted by the analysis device into the first line 2.
  • the supply lines 4a, 4b and 4c can also travel directly into the first line 2.
  • pendulum system shown in Figures 4, 7 and 8 has been described above with reference to xenon as an anesthetic, it is also suitable for other anesthetics, especially for halogenated anesthetics, desfluranes, sevoflurane, isoflurane, enflurane and halothane.
  • the pendulum system generally and independently of the anesthetic used falls within the scope of the present application.
  • the device of the present invention proves to be advantageous because it is easy and inexpensive to produce and can be easily combined with existing systems.
  • the device is lightweight and compact and thus versatile and easy to use.
  • the recycling happens internally, i. there are no external additional devices necessary to recover the xenon.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • Hematology (AREA)
  • Emergency Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Environmental Sciences (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

L'invention concerne un dispositif pour recycler du xénon dans un système de respiration sous anesthésie, comprenant : un filtre de rétention qui est à même d'adsorber et de désorber le xénon; et une première conduite raccordée au filtre de rétention et destinée à diriger un premier mélange de gaz respiratoire, provenant d'un patient et contenant du xénon, dans une première direction d'écoulement à travers le filtre de rétention, au moins une partie du xénon restant dans le filtre de rétention. Le dispositif comprend en outre : une deuxième conduite, raccordée au filtre de rétention, pour diriger un deuxième mélange de gaz respiratoire dans une deuxième direction d'écoulement à travers le filtre de rétention, au moins une partie du xénon resté dans le filtre de rétention étant absorbée et emportée par le deuxième flux de gaz respiratoire; et une conduite d'alimentation reliée à la première conduite pour diriger dans la première conduite un anesthésiant contenant du xénon. L'invention concerne en outre un système de respiration sous anesthésie doté du dispositif précité, ainsi qu'une méthode de recyclage de xénon dans un système de respiration sous anesthésie.
EP08801977A 2007-09-10 2008-09-10 Système de respiration sous anesthésie Withdrawn EP2205304A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08801977A EP2205304A1 (fr) 2007-09-10 2008-09-10 Système de respiration sous anesthésie

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP07017682A EP2033680A1 (fr) 2007-09-10 2007-09-10 Système de respiration sous anesthésie à xénon
PCT/EP2008/007405 WO2009033646A1 (fr) 2007-09-10 2008-09-10 Système de respiration sous anesthésie
EP08801977A EP2205304A1 (fr) 2007-09-10 2008-09-10 Système de respiration sous anesthésie

Publications (1)

Publication Number Publication Date
EP2205304A1 true EP2205304A1 (fr) 2010-07-14

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EP07017682A Withdrawn EP2033680A1 (fr) 2007-09-10 2007-09-10 Système de respiration sous anesthésie à xénon
EP08801977A Withdrawn EP2205304A1 (fr) 2007-09-10 2008-09-10 Système de respiration sous anesthésie

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EP07017682A Withdrawn EP2033680A1 (fr) 2007-09-10 2007-09-10 Système de respiration sous anesthésie à xénon

Country Status (4)

Country Link
US (1) US20100258117A1 (fr)
EP (2) EP2033680A1 (fr)
JP (1) JP2010538688A (fr)
WO (1) WO2009033646A1 (fr)

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JP6215199B2 (ja) * 2011-06-20 2017-10-18 ディエムエフ・メディカル・インコーポレーテッド 麻酔回路およびこの麻酔回路を使用するための方法
WO2014094139A1 (fr) 2012-12-22 2014-06-26 Dmf Medical Incorporated Circuit anesthésique ayant une membrane à fibres creuses
WO2016086347A1 (fr) * 2014-12-02 2016-06-09 深圳迈瑞生物医疗电子股份有限公司 Appareil respiratoire anesthésique à alimentation électrique
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