(19)
(11)EP 3 257 440 B1

(12)EUROPEAN PATENT SPECIFICATION

(45)Mention of the grant of the patent:
04.11.2020 Bulletin 2020/45

(21)Application number: 17174715.7

(22)Date of filing:  07.06.2017
(51)International Patent Classification (IPC): 
A61B 5/08(2006.01)
A61M 16/08(2006.01)
A61B 5/05(2006.01)

(54)

GAS ANALYSIS SYSTEM, LIQUID SEPARATOR, AND GAS ANALYZER

GASANALYSESYSTEM, FLÜSSIGKEITSABSCHEIDER UND GASANALYSATOR

SYSTÈME D'ANALYSE DE GAZ, SÉPARATEUR DE LIQUIDE ET ANALYSEUR DE GAZ


(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30)Priority: 16.06.2016 JP 2016120195

(43)Date of publication of application:
20.12.2017 Bulletin 2017/51

(73)Proprietor: Nihon Kohden Corporation
Tokyo 161-8560 (JP)

(72)Inventors:
  • Yasumura, Satoshi
    Tokyo, 161-8560 (JP)
  • Nakaichi, Katsumi
    Tokyo, 161-8560 (JP)
  • Suzuki, Shinya
    Tokyo, 161-8560 (JP)

(74)Representative: Hoffmann Eitle 
Patent- und Rechtsanwälte PartmbB Arabellastraße 30
81925 München
81925 München (DE)


(56)References cited: : 
WO-A1-2013/070545
US-A1- 2003 191 405
WO-A1-2014/068000
US-B1- 6 896 713
  
      
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


    Description

    BACKGROUND


    1. Technical Field



    [0001] The present invention relates to a gas analyzer which analyzes a gas acquired from a living body, according to claim 5. Further disclosed is a liquid separator which is to be detachably attached to such a gas analyzer, and which separates the liquid component from the gas. The invention still further relates to a gas analysis system according to claim 1 which includes the gas analyzer and the liquid separator.

    2. Background Art



    [0002] As an example of a gas analyzer of this type, an apparatus is known which acquires a respiratory gas from a patient under surgery, and which measures the concentration of anesthesia gas contained in the respiratory gas.

    [0003] In order to prevent water vapor contained in the respiratory gas from being condensed and entering the interior of the gas analyzer, a liquid separator which is also called a water trap is attached to the gas analyzer.

    [0004] The liquid separator includes a hydrophobic filter. The water content contained in the respiratory gas of the patient is captured by the filter, and blocked from entering the gas analyzer. Such a liquid separator is disclosed, for example, in US 6,896,713.

    [0005] The liquid separator and gas analysis instrument which are disclosed in US 6,896,713 include electric contacts, respectively. When the electric contacts are contacted with each other, it is detected that the liquid separator is attached to the gas analysis instrument. In the configuration depending on an electrical contact, an error in detection of the attachment state may be possibly caused by a contact failure.

    [0006] It is an object of the invention to improve the accuracy of detection of an attachment state of a liquid separator with respect to a gas analyzer.

    [0007] WO 2013/070545 A1 describes systems and methods for monitoring and/or assessing metabolic and/or cardiopulmonary parameters of a subject are disclosed. Systems and methods for high speed monitoring of metabolic parameters of a subject in a substantially unrestricted setting are disclosed. Further disclosed are wearable systems and methods for substantially unobtrusive monitoring of a breath stream from a subject. Also disclosed are wearable systems and methods for real-time monitoring of the respiratory function and/or one or more disease states of a subject. Data systems to coordinate simultaneous monitoring of one or more metabolic and/or cardiopulmonary parameters of a plurality of subjects are also disclosed.

    SUMMARY OF THE INVENTION



    [0008] The object of the invention is achieved by the subject-matter of the independent claims. Advantageous embodiments are defined in the dependent claims. Further examples are provided for facilitating the understanding of the invention.
    1. (1) According to an example, a gas analysis system includes a gas analyzer which analyzes a gas acquired from a living body and a liquid separator which is detachably attached to the gas analyzer, and which separates a liquid component from the gas. In the gas analysis system, the liquid separator includes a magnet, and the gas analyzer includes a magnetic sensor which detects magnetism generated by the magnet, and a determining section which, based on the magnetism detected by the magnetic sensor, determines that the liquid separator is attached to the gas analyzer.
      According to the configuration (1), the attachment state of the liquid separator with respect to the gas analyzer can be detected in a non-contact manner. Unlike the technique which depends on an electrical contact, therefore, there is no possibility that an error in detection of the attachment state is caused by a contact failure. Consequently, the accuracy of detection of the attachment state of the liquid separator with respect to the gas analyzer can be improved.
    2. (2) According to another example, a liquid separator is to be detachably attached to a gas analyzer that analyzes a gas acquired from a living body, and separates a liquid component from the gas. Further, the liquid separator includes a magnet which generates magnetism that is to be detected by a magnetic sensor provided in the gas analyzer.
    3. (3) According to another example, a gas analyzer to which a liquid separator separating a liquid component from a gas acquired from a living body is detachably attached includes a magnetic sensor and a determining section. The magnetic sensor detects magnetism generated by a magnet provided in the liquid separator, and the determining section determines that the liquid separator is attached to the gas analyzer based on the magnetism detected by the magnetic sensor.

    BRIEF DESCRIPTION OF DRAWINGS



    [0009] 

    Fig. 1 is a diagram showing the functional configuration of a gas analysis system of an example.

    Fig. 2 is a diagram illustrating the operation of the gas analysis system.


    DETAILED DESCRIPTION



    [0010] Hereinafter, an example will be described in detail with reference to the accompanying drawings. Fig. 1 shows the functional configuration of a gas analysis system of the example. The gas analysis system 1 includes a gas analyzer 2 and a liquid separator 3.

    [0011] The gas analyzer 2 includes an analyzing section 21 and an interface 22. The liquid separator 3 is configured so as to be attachable to and detachable from the interface 22 of the gas analyzer 2. The liquid separator 3 is configured so as to separate a liquid component from a gas acquired from a living body.

    [0012] The liquid separator 3 includes an introduction port 31. A sampling tube 4 for guiding a respiratory gas (an example of the gas) of a patient (an example of the living body) is detachably connected to the introduction port 31.

    [0013] The liquid separator 3 includes a reservoir 32, a hydrophobic filter 33, and a gas passage 34. The introduction port 31 is opened in the reservoir 32. The hydrophobic filter 33 separates the reservoir 32 and the gas passage 34 from each other.

    [0014] The liquid separator 3 includes a discharge port 35. The discharge port 35 communicates with the gas passage 34. The discharge port 35 is configured so as to be connectable to the interface 22 of the gas analyzer 2.

    [0015] The gas analyzer 2 includes a gas flow path 23. The analyzing section 21 and the interface 22 communicate with each other via the gas flow path 23. When the discharge port 35 of the liquid separator 3 is connected to the interface 22, a flow path extending from the sampling tube 4 which is connected to the patient, to the analyzing section 21 through the liquid separator 3 is formed.

    [0016] The gas analyzer 2 includes a pump and suction interface which are not shown. The pump and the suction interface communicate with each other. On the other hand, the liquid separator 3 includes a suction port which is not shown. The suction port and the gas passage 34 communicate with each other. When the liquid separator 3 is attached to the gas analyzer 2, the suction port is connected to the suction interface. As a result, a gas flow path extending from the gas passage 34 to the pump is formed.

    [0017] When the pump operates, a gas flow extending from the introduction port 31 to the discharge port 35 through the reservoir 32 and the gas passage 34 is produced. The water content (an example of the liquid component) contained in the respiratory gas of the patient which is introduced into the liquid separator 3 through the introduction port 31 is blocked from passage by the hydrophobic filter 33, and accumulated in the reservoir 32.

    [0018] The respiratory gas of the patient from which the water content is removed is sucked into the gas analyzer 2 from the discharge port 35 connected to the interface 22. The respiratory gas passes through the gas flow path 23 to reach the analyzing section 21. The analyzing section 21 is configured so as to analyze concentrations of carbon dioxide, oxygen, nitrous oxide , a volatile anesthetic agent, and the like which are contained in the respiratory gas.

    [0019] The liquid separator 3 includes a magnet 36. The gas analyzer 2 includes a magnetic sensor 24 and a determining section 25. The magnetic sensor 24 is configured so as to detect magnetism generated by the magnet 36. The determining section 25 is configured so as to determine that the liquid separator 3 is attached to the gas analyzer 2, based on the magnetism detected by the magnetic sensor 24.

    [0020] When the liquid separator 3 is attached to the gas analyzer 2, the magnet 36 approaches the magnetic sensor 24. This causes the magnitude of the magnetism detected by the magnetic sensor 24, to be increased. For example, the determining section 25 can be configured so as to, in the case where the magnitude of the magnetism detected by the magnetic sensor 24 exceeds a threshold, determine that the liquid separator 3 is attached to the gas analyzer 2.

    [0021] The analyzing section 21 can be configured so as to perform a predetermined analysis, only in the case where the determining section 25 determines that the liquid separator 3 is attached to the gas analyzer.

    [0022] According to the configuration, the attachment state of the liquid separator 3 with respect to the gas analyzer 2 can be detected in a non-contact manner. Unlike the technique which depends on an electrical contact, there is no possibility that an error in detection of the attachment state is caused by a contact failure. Consequently, the accuracy of detection of the attachment state of the liquid separator 3 with respect to the gas analyzer 2 can be improved.

    [0023] The gas analysis system 1 of the example can be configured so that, as shown in Fig. 2, plural types of liquid separators can be attached to the gas analyzer 2. For example, a liquid separator 3A for an adult, and a liquid separator 3B for a neonate can be attached to the gas analyzer 2.

    [0024] The liquid separator 3A includes a magnet 36A. The magnet 36A is disposed in the liquid separator 3A so that, for example, the N pole of the magnet 36A is directed toward the magnetic sensor 24 when the liquid separator 3A is attached to the gas analyzer 2. The liquid separator 3B includes a magnet 36B. The magnet 36B is disposed in the liquid separator 3B so that, for example, the S pole of the magnet 36B is directed toward the magnetic sensor when the liquid separator 3B is attached to the gas analyzer 2.

    [0025] In this case, the magnetic sensor 24 of the gas analyzer 2 is configured so as to detect the polarity which is exhibited by a magnet. The determining section 25 of the gas analyzer 2 is configured so as to determine the type of the attached liquid separator based on the magnet polarity detected by the magnetic sensor 24. In the example, when the magnetic sensor 24 detects the N pole, the determining section 25 determines that the liquid separator 3A for an adult is attached. When the magnetic sensor 24 detects the S pole, the determining section 25 determines that the liquid separator 3B for a neonate is attached. In other words, the polarity of each of the magnets 36A and 36B indicates the type of the liquid separator to which the magnet itself is attached.

    [0026] In a system in which the attachment state of a liquid separator is detected by means of an electrical contact, in the case where also the type of the liquid separator is to be detected, at least one electric contact for detecting the type is necessary in addition to an electric contact for detecting the attachment state. In the configuration of the example, by contrast, both the attachment state of the liquid separator 3 with respect to the gas analyzer 2, and the type of the liquid separator can be detected simply by disposing one magnet and one magnetic sensor. The number of components related to the detection is reduced, and therefore the possibility of occurrence of a failure or the like in the detection function can be lowered.

    [0027] In the case where it is necessary to detect only the polarity of the magnet, an inexpensive Hall element can be used as the magnetic sensor 24. Therefore, the cost can be reduced in both the gas analyzer 2 and the liquid separator 3, with the result that the cost of constructing the gas analysis system 1 can be suppressed.

    [0028] As shown in Fig. 1, the gas analyzer 2 can include a pressure sensor 26 and a checking section 27. The pressure sensor 26 is configured so as to detect the pressure of the gas flow path 23. The checking section 27 is configured so as to check whether the liquid separator 3 is correctly attached or not, based on a change of the pressure detected by the pressure sensor 26.

    [0029] In the case where the discharge port 35 of the liquid separator 3 is not correctly connected to the interface 22 of the gas analyzer 2, even when the pump operates, for example, the pressure of the gas flow path 23 does not show a predetermined change. The checking section 27 is configured so as to, in the case where such a situation occurs, detect an abnormality in the attachment of the liquid separator 3.

    [0030] According to the configuration, while a non-contact detection system is employed, it is possible to detect more surely that the liquid separator 3 is correctly attached to the gas analyzer 2. That is, the accuracy of detection of the attachment state of the liquid separator 3 with respect to the gas analyzer 2 can be further improved.

    [0031] For example, the analyzing section 21 may be configured so as to, only when the determining section 25 determines that the liquid separator 3 is attached, and the checking section 27 confirms the correct attachment of the liquid separator 3, perform a predetermined analysis. In the case where an abnormality in the attachment of the liquid separator 3 is detected, at least one of visual notification, auditory notification, and notification by communication to an external apparatus (such as a patient monitor) may be performed.

    [0032] The above-described example is a mere example for facilitating understanding of the disclosure The configuration of the example may be adequately changed or improved without departing the scope of the disclosure It is obvious that equivalents are included within the technical scope of the disclosure.

    [0033] In the example, the type of the liquid separator 3, i.e. the type for an adult, or that for a neonate is indicated depending on the polarity of the magnet 36 provided in the liquid separator 3. However, the type of the liquid separator 3 which is indicated by the polarity of the magnet 36 is adequately determined in accordance with the specification of the liquid separator 3 that is used in the gas analysis system 1.

    [0034]  In the example, the type of the liquid separator 3 which is indicated by the magnet 36 provided in the liquid separator 3 is classified into two categories respectively corresponding to the possible polarities of the magnet 36. If the magnetic sensor 24 can be configured so as to distinguish magnitudes of the magnetic force in addition to or in place of the polarities, however, the type of the liquid separator 3 may be classified into three or more categories. Also in this case, both the attachment state of the liquid separator 3 with respect to the gas analyzer 2, and the type of the liquid separator can be detected simply by disposing one magnet and one magnetic sensor.

    [0035] In the example, the water content contained in the respiratory gas of the patient is separated by the liquid separator 3. As far as the liquid component to be separated can be separated by the hydrophobic filter 33 of the liquid separator 3, the gas to be acquired is not limited to the respiratory gas, and the liquid component to be separated is not limited to the water content.

    [0036] Although the example is applied to the analysis in which a gas acquired from the human body is analyzed by the analyzing section 21, the invention may be applied also to an analysis in which a gas acquired from the body of an animal other than a human is analyzed by the analyzing section 21.


    Claims

    1. A gas analysis system (1) comprising:

    a gas analyzer (2) adapted to analyze a gas acquired from a living body; and

    a liquid separator (3) which is detachably attached to the gas analyzer (2), and which is adapted to separate a liquid component from the gas, wherein

    the liquid separator (3) includes a magnet (36), and

    the gas analyzer (2) includes:

    a magnetic sensor (24) adapted to detect a magnitude of the magnetism and a polarity of a magnet (36); and

    a determining section (25) which, based on the magnitude of magnetism detected by the magnetic sensor (24), is adapted to determine that the liquid separator (3) is attached to the gas analyzer (2); wherein

    the magnet (36) is configured to indicate a type of the liquid separator (3), and

    the determining section (25) is adapted to determine an attachment state of the liquid separator (3) based on the magnitude of the magnetism of the magnet (36) and to determine a type of the liquid separator (3) based on the polarity of the magnet (36) detected by the magnetic sensor (24) .


     
    2. The gas analysis system (1) according to claim 1, wherein
    the magnetic sensor (24) includes a Hall element which is adapted to detect the polarity of the magnet (36).
     
    3. The gas analysis system (1) according to claim 1 or 2, wherein
    the type includes a type for an adult and a type for a neonate.
     
    4. The gas analysis system (1) according to any one of claims 1 to 3, wherein
    the gas analyzer (2) further includes:

    a pressure sensor (26) that is adapted to detect a pressure of a flow path (23) through which the gas flows; and

    a checking section (27) that is adapted to check whether the liquid separator (3) is correctly attached or not, based on a change of the pressure detected by the pressure sensor (26).


     
    5. A gas analyzer (2) to which a liquid separator (3) is to be detachably attached, the liquid separator (3) separating a liquid component from a gas acquired from a living body,
    wherein
    the gas analyzer (2) includes:

    a magnetic sensor (24) which is adapted to detect a magnitude of the magnetism of a magnet (36) provided in the liquid separator (3) and to detect a polarity of the magnet (36) ; and

    a determining section (25) which, based on the magnitude of the magnetism detected by the magnetic sensor (24), is adapted to determine that the liquid separator (3) is attached to the gas analyzer (2); wherein

    the determining section (25) is adapted to determine an attachment state of the liquid separator (3) based on the magnitude of the magnetism and to determine a type of the liquid separator (3) based on the polarity of the magnet (36) detected by the magnetic sensor (24).


     
    6. The gas analyzer (2) according to claim 5, wherein
    the magnetic sensor (24) is a Hall element which is adapted to detect the polarity that is exhibited by the magnet (36).
     
    7. The gas analyzer (2) according to claim 5 or 6, wherein
    the type includes a type for an adult and a type for a neonate.
     
    8. The gas analyzer (2) according to any one of claims 5 to 7, wherein
    the gas analyzer (2) further includes:

    a pressure sensor (26) that is adapted to detect a pressure of a gas flow path (23) through which the gas flows; and

    a checking section (27) that is adapted to check whether the liquid separator (3) is correctly attached or not, based on a change of the pressure detected by the pressure sensor (26) .


     


    Ansprüche

    1. Gasanalysesystem (1), das umfasst:

    einen Gasanalysator (2), der dazu angepasst ist, ein Gas zu analysieren, das von einem lebendigen Leib erworben wird; und

    einen Flüssigkeitsabscheider (3), der abnehmbar an dem Gasanalysator (2) angebracht ist, und der dazu angepasst ist, einen flüssigen Bestandteil von dem Gas abzuscheiden, wobei

    der Flüssigkeitsabscheider (3) einen Magnet (36) beinhaltet, und

    der Gasanalysator (2) beinhaltet:

    einen Magnetsensor (24), der dazu angepasst ist, ein Ausmaß des Magnetismus und eine Polung eines Magnets (36) zu erfassen; und

    einen Bestimmungsabschnitt (25), der basierend auf dem Ausmaß des Magnetismus, das von dem Magnetsensor (24) erfasst wird, dazu angepasst ist zu bestimmen, dass der Flüssigkeitsabscheider (3) an dem Gasanalysator (2) angebracht ist; wobei

    der Magnet (36) konfiguriert ist, um einen Typ des Flüssigkeitsabscheiders (3) anzugeben, und

    der Bestimmungsabschnitt (25) dazu angepasst ist, einen Anbringungszustand des Flüssigkeitsabscheiders (3) basierend auf dem Ausmaß des Magnetismus des Magnets (36) zu bestimmen, und einen Typ des Flüssigkeitsabscheiders (3) basierend auf der Polung des Magnets (36), die von dem Magnetsensor (24) erfasst wird, zu bestimmen.


     
    2. Gasanalysesystem (1) nach Anspruch 1, wobei
    der Magnetsensor (24) ein Hall-Element beinhaltet, das dazu angepasst ist, die Polung des Magnets (36) zu erfassen.
     
    3. Gasanalysesystem (1) nach Anspruch 1 oder 2, wobei
    der Typ einen Typ für einen Erwachsenen und einen Typ für ein Neugeborenes beinhaltet.
     
    4. Gasanalysesystem (1) nach einem der Ansprüche 1 bis 3, wobei
    der Gasanalysator (2) weiter beinhaltet:

    einen Drucksensor (26), der dazu angepasst ist, einen Druck eines Flusswegs (23), durch den das Gas fließt, zu erfassen; und

    einen Prüfabschnitt (27), der dazu angepasst ist, basierend auf einer Änderung des Drucks, die von dem Drucksensor (26) erfasst wird, zu prüfen, ob der Flüssigkeitsabscheider (3) korrekt angebracht ist oder nicht.


     
    5. Gasanalysator (2), an den ein Flüssigkeitsabscheider (3) abnehmbar angebracht sein soll, wobei der Flüssigkeitsabscheider (3) einen flüssigen Bestandteil aus dem Gas, das von einem lebenden Körper erworben wird, abscheidet, wobei
    der Gasanalysator (2) beinhaltet:

    einen Magnetsensor (24), der dazu angepasst ist, ein Ausmaß des Magnetismus eines Magnets (36), der in dem Flüssigkeitsabscheider (3) bereitgestellt ist, zu erfassen und eine Polung des Magnets (36) zu erfassen; und

    einen Bestimmungsabschnitt (25), der basierend auf dem Ausmaß des Magnetismus, das von dem Magnetsensor (24) erfasst wird, dazu angepasst ist zu bestimmen, dass der Flüssigkeitsabscheider (3) an dem Gasanalysator (2) angebracht ist; wobei

    der Bestimmungsabschnitt (25) dazu angepasst ist, einen Anbringungszustand des Flüssigkeitsabscheiders (3) basierend auf dem Ausmaß des Magnetismus zu bestimmen, und einen Typ des Flüssigkeitsabscheiders (3) basierend auf der Polung des Magnets (36), die von dem Magnetsensor (24) erfasst wird, zu bestimmen.


     
    6. Gasanalysator (2) nach Anspruch 5, wobei
    der Magnetsensor (24) ein Hall-Element ist, das dazu angepasst ist, die Polung, die der Magnet (36) darlegt, zu erfassen.
     
    7. Gasanalysator (2) nach Anspruch 5 oder 6, wobei
    der Typ einen Typ für einen Erwachsenen und einen Typ für ein Neugeborenes beinhaltet.
     
    8. Gasanalysator (2) nach einem der Ansprüche 5 bis 7, wobei
    der Gasanalysator (2) weiter beinhaltet:

    einen Drucksensor (26), der dazu angepasst ist, einen Druck eines Gasflusswegs (23), durch den das Gas fließt, zu erfassen; und

    eine Prüfsektion (27), die dazu angepasst ist, basierend auf einer Änderung des Drucks, die von dem Drucksensor (26) erfasst wird, zu prüfen, ob der Flüssigkeitsabscheider (3) korrekt angebracht ist oder nicht.


     


    Revendications

    1. Système d'analyse de gaz (1) comprenant :

    un analyseur de gaz (2) adapté pour analyser un gaz acquis à partir d'un corps vivant ; et

    un séparateur de liquide (3) qui est attaché de manière détachable à l'analyseur de gaz (2), et qui est adapté pour séparer un composant liquide du gaz, dans lequel

    le séparateur de liquide (3) inclut un aimant (36), et

    l'analyseur de gaz (2) inclut :

    un capteur magnétique (24) adapté pour détecter une grandeur du magnétisme et une polarité d'un aimant (36) ; et

    une section de détermination (25) qui, sur la base de la grandeur du magnétisme détectée par le capteur magnétique (24), est adaptée pour déterminer que le séparateur de liquide (3) est attaché à l'analyseur de gaz (2) ; dans lequel

    l'aimant (36) est configuré pour indiquer un type du séparateur de liquide (3), et

    la section de détermination (25) est adaptée pour déterminer un état d'attachement du séparateur de liquide (3) sur la base de la grandeur du magnétisme de l'aimant (36) et pour déterminer un type du séparateur de liquide (3) sur la base de la polarité de l'aimant (36) détectée par le capteur magnétique (24).


     
    2. Système d'analyse de gaz (1) selon la revendication 1, dans lequel
    le capteur magnétique (24) inclut un élément à effet Hall qui est adapté pour détecter la polarité de l'aimant (36).
     
    3. Système d'analyse de gaz (1) selon la revendication 1 ou 2, dans lequel le type inclut un type pour un adulte et un type pour un nouveau-né.
     
    4. Système d'analyse de gaz (1) selon l'une quelconque des revendications 1 à 3, dans lequel
    l'analyseur de gaz (2) inclut en outre :

    un capteur de pression (26) qui est adapté pour détecter une pression d'un trajet d'écoulement (23) à travers lequel s'écoule le gaz ; et

    une section de vérification (27) qui est adaptée pour vérifier si le séparateur de liquide (3) est correctement attaché ou pas, sur la base d'un changement de la pression détecté par le capteur de pression (26).


     
    5. Analyseur de gaz (2) auquel un séparateur de liquide (3) doit être attaché de manière détachable, le séparateur de liquide (3) séparant un composant liquide d'un gaz acquis à partir d'un corps vivant, dans lequel
    l'analyseur de gaz (2) inclut :

    un capteur magnétique (24) qui est adapté pour détecter une grandeur du magnétisme d'un aimant (36) prévu dans le séparateur de liquide (3) et pour détecter une polarité de l'aimant (36) ; et

    une section de détermination (25) qui, sur la base de la grandeur du magnétisme détectée par le capteur magnétique (24), est adaptée pour déterminer que le séparateur de liquide (3) est attaché à l'analyseur de gaz (2) ; dans lequel

    la section de détermination (25) est adaptée pour déterminer un état d'attachement du séparateur de liquide (3) sur la base de la grandeur du magnétisme et pour déterminer un type du séparateur de liquide (3) sur la base de la polarité de l'aimant (36) détectée par le capteur magnétique (24).


     
    6. Analyseur de gaz (2) selon la revendication 5, dans lequel
    le capteur magnétique (24) est un élément à effet Hall qui est adapté pour détecter la polarité qui est présentée par l'aimant (36).
     
    7. Analyseur de gaz (2) selon la revendication 5 ou 6, dans lequel le type inclut un type pour un adulte et un type pour un nouveau-né.
     
    8. Analyseur de gaz (2) selon l'une quelconque des revendications 5 à 7, dans lequel l'analyseur de gaz (2) inclut en outre :

    un capteur de pression (26) qui est adapté pour détecter une pression d'un trajet d'écoulement de gaz (23) à travers lequel s'écoule le gaz ; et

    une section de vérification (27) qui est adaptée pour vérifier si le séparateur de liquide (3) est correctement attaché ou pas, sur la base d'un changement de la pression détecté par le capteur de pression (26).


     




    Drawing











    Cited references

    REFERENCES CITED IN THE DESCRIPTION



    This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.

    Patent documents cited in the description