WO1998004311A1 - Gas supply device for sleep apnea - Google Patents

Gas supply device for sleep apnea Download PDF

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Publication number
WO1998004311A1
WO1998004311A1 PCT/EP1997/004077 EP9704077W WO9804311A1 WO 1998004311 A1 WO1998004311 A1 WO 1998004311A1 EP 9704077 W EP9704077 W EP 9704077W WO 9804311 A1 WO9804311 A1 WO 9804311A1
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WO
WIPO (PCT)
Prior art keywords
valve
liquid container
flow
gas
humidifier
Prior art date
Application number
PCT/EP1997/004077
Other languages
German (de)
French (fr)
Inventor
Nikolaus Netzer
Original Assignee
Nikolaus Netzer
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 Nikolaus Netzer filed Critical Nikolaus Netzer
Priority to AU42027/97A priority Critical patent/AU4202797A/en
Publication of WO1998004311A1 publication Critical patent/WO1998004311A1/en

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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
    • A61M16/14—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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
    • G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
    • G01N33/569—Immunoassay; Biospecific binding assay; Materials therefor for microorganisms, e.g. protozoa, bacteria, viruses
    • G01N33/56966—Animal cells
    • 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
    • A61M16/14—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
    • A61M16/186—Locking 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/12—General characteristics of the apparatus with interchangeable cassettes forming partially or totally the fluid circuit

Definitions

  • the invention relates to a device for gas supply in sleep apnea with a respiratory gas source, which leads to at least one breathing opening of a patient via a flow guide, the flow guide being connected to a gas humidifier in order to dispense a liquid stored in a liquid reservoir in partial quantities to the breathing gas to be supplied .
  • Various devices are already known to prevent the trachea from sagging during sleep in apnea patients, which leads to unconscious shortness of breath.
  • face masks are known that are placed on the nose area of the patient. The patient is supplied with small amounts of breathing air via this face mask and a blower connected to the face mask via an air hose. This creates an overpressure in the patient's nose area, which causes the patient's trachea to be forced open and, as a result, an unconscious shortness of breath to be prevented.
  • the patient's mucous membranes can dry out, which can lead to pain or nosebleeds.
  • devices have been created in which humidifiers are arranged in front of the air lines leading to the face mask.
  • a disadvantage of these previously known devices is that the humidifier must always be used, otherwise the breathing gas line in the device is interrupted.
  • the humidifier is not always essential. If the air humidity is already high, for example in summer, additional humidification of the breathing air is perceived as disruptive by many patients. In addition, the humidifier places high demands on hygiene, which require considerable additional effort when the humidifier is used continuously. Since the humidifier has a heating device with which a water supply is gradually evaporated, a humidifier that is permanently used results in high power consumption.
  • the flow guidance of the device has at least two preselectable flow paths, of which a first flow path leads to the patient's breathing opening bypassing the gas humidifier and of which a second flow path leads to the patient's breathing opening via a mixing point, which mixing point communicates with the gas humidifier.
  • the breathing gas can be conducted via the first flow path.
  • the device can also be used without the gas humidifier and the patient can be supplied with non-humidified breathing gas.
  • the breathing gas can optionally also be conducted via the second flow path, the breathing gas being humidified at the admixing point and this humidified breathing gas being supplied to the patient.
  • the two flow paths can be arranged in different ways.
  • two separate gas lines can originate from the respiratory gas source, the first of which is led directly to a respiratory gas outlet and the second of which is connected to the gas humidifier.
  • Another breathing gas line then leads from the gas humidifier to the breathing gas outlet.
  • a flow path starts from both respiratory gas sources, which flow into one another before a common respiratory gas outlet. Another possibility is to design the second flow path as a bypass to be described later.
  • the gas humidifier has a liquid container as a liquid reservoir, which liquid container can be removed and reinserted in a humidifier and / or device housing.
  • the liquid container can then be removed from the device and easily cleaned, which considerably simplifies the handling of the device with regard to hygienic aspects.
  • valve arrangement with mutual positive control is provided in the flow paths of the flow guide.
  • the flow path that is not required is closed while the other flow path is open.
  • the forced control ensures that only one of the flow paths is open at a time.
  • valve arrangement is in control connection with a control device for switching the valve arrangement on the one hand when the liquid container is removed into the first flow path and on the other hand when the liquid container is inserted into the second flow path.
  • the valve arrangement is automatically second flow path is opened so that the breathing gas is passed through the admixing point, while when the liquid container is removed, this second flow path is closed and the first flow path is open bypassing the gas humidifier.
  • a manual switching of the valve arrangement when removing or reinserting the liquid container is not necessary. Accidental guiding of the breathing gas via the wrong flow path, for example when the liquid container is removed, is thus prevented via the second flow path.
  • the gas humidifier is connected to the flow guide via a bypass, which bypass can be blocked on the inlet and / or outlet side.
  • the second flow path is then formed by this by-pass.
  • the by-pass branches off from the first flow path on the inlet side and leads to an inlet of the gas humidifier, while the by-pass leads away from the gas humidifier on the outlet side and flows back into the first flow path.
  • the bypass can be blocked on the inlet and / or outlet side, so that the breathing gas, when it is routed via the first flow path, cannot undesirably evade via the bypass.
  • the bypass should be lockable on the entry and / or exit side.
  • blocking the bypass on both sides can be expedient in order to prevent breathing gas from escaping at the bypass on the inlet or outlet side.
  • a main flow shut-off valve which is interposed in the flow direction behind the by-pass inlet and before the by-pass outlet in the flow guide and that with at least one in the bypass pass inlet and / or bypass outlet interposed bypass check valve can be alternately opened and closed.
  • the breathing gas can flow through the gas humidifier via the bypass when the bypass shut-off valves are open, while the first flow path is interrupted bypassing the gas humidifier through the main flow shut-off valve. If, on the other hand, the first flow path is opened by opening the main flow shut-off valve, the secondary flow shut-off valve (s) are automatically closed and the by-pass is interrupted so that breathing gas can no longer get through the gas humidifier.
  • check valves are designed as valve spools, which are preferably mechanically positively controlled with one another.
  • the valve arrangement can be used with these
  • shut-off valves for actuation are in control connection with the moisture container inserted into or removed from the humidifier and / or device housing, and that the shut-off valves are preferably drive-coupled for this purpose with at least one button which can be acted upon by the liquid tank.
  • the main flow valve can be moved into its closed position against a restoring force and the secondary flow shut-off valve (s) can be moved into its (its) open position against a restoring force.
  • the button is actuated and the first flow path is closed, while the second flow path to the admixing point is opened.
  • the main flow shut-off valve automatically moves to its open position, thus opening the first flow path bypassing the gas humidifier.
  • the bypass shut-off valve (s) is (are) moved into their closed position and the second flow path is thus closed.
  • the breathable gas can each only propagate over one of the flow paths and with the insertion or removal of the liquid 'container, the respective flow path is predetermined.
  • a further embodiment provides that the main flow shut-off valve is displaceably guided transversely to the main flow direction and approximately parallel to the direction of insertion of the liquid container in the device housing, and that the valve slide of the main flow shut-off valve is displaceable against a restoring force in the direction of insertion of the liquid container and is in drive connection with the liquid container .
  • bypass inlet and the bypass outlet are assigned a common valve slide, which is preferably in drive connection with the main flow shut-off valve.
  • a run-up slope is provided on the main flow shut-off valve for actuating the secondary flow shut-off valve ( ⁇ ) by means of a derived transverse movement, and if the run-up slope is displaceable with an actuating end face of the cross flow direction of the main flow shut-off valve guided valve spool of the bypass check valve cooperate.
  • valve arrangement can be implemented with little design effort. This applies to both the forced coupling of the main flow shut-off valve and the secondary flow shut-off valve (s) as well as the Forced operation of the valves when inserting or removing the liquid container.
  • the gas humidifier for steam generation has a heating device arranged in the area of the liquid container, which is electrically connected to a spring-loaded electrical switch button, which switch button is acted upon by the liquid container in its position of use in the container and / or device housing, and is in its operating position.
  • the circuit of the heating device is automatically closed in this area, so that steam for humidifying the breathing gas can be formed in the gas humidifier.
  • the heating device is automatically switched off by the spring load of the electrical switch button, thereby avoiding unnecessary power consumption.
  • liquid level in the liquid container is limited by means of an overflow and if the container inlet and outlet that can be connected to the bypass are preferably arranged at a distance above the maximum liquid level. This ensures that the breathing gas led through the gas humidifier only connects with water vapor and that no water drops are entrained into the breathing gas lines.
  • a device for gas supply for sleep apnea which can be used either with or without a gas humidifier.
  • the fact that the liquid container can be removed from the humidifier or device housing and used again means that the device meets the high hygienic requirements.
  • the Power consumption of the device is reduced since the heating device of the device can be switched off when the gas humidifier is not in use.
  • FIG. 1 is a plan view of a device according to the invention with a liquid container removed from the device housing,
  • FIG. 2 shows the device according to FIG. 1, but with an inserted liquid container
  • Fig. 3 is a side sectional view of the device according to line A-A in Fig. 2, and
  • FIG. 4 shows a sectional side view of the device along line B-B in FIG. 2.
  • a device for gas supply in sleep apnea designated as a whole by 1, has a breathing gas source 2, which leads to a breathing gas outlet 4 via a flow guide 3.
  • the breathing gas source 2 is formed in the figures by a blower with which the ambient air surrounding the device is conveyed into the flow guide 3.
  • the breathing gas source could, however, also be, for example, a pump or a gas bottle, which releases the pressurized gas contained therein via a valve into the flow guide 3.
  • An air hose (not shown in more detail) can be connected to the breathing gas outlet 4, which connects the device 1 with a face mask (also not shown) that extends to the face A patient's nose area can be connected.
  • the flow guide 3 is connected to a gas humidifier 5 and has two flow paths 6a, 6b. Bypassing the gas humidifier 5, the first flow path 6a leads to the breathing gas outlet 4 and the second flow path 6b leads to the breathing gas outlet 4 via an admixing point 7 to be explained in more detail, which is connected to the gas humidifier 5.
  • a device 1 for supplying gas for sleep apnea as shown in the figures, next to the breathing gas source 2, the flow guide 3 and the breathing gas outlet 4, a humidifier 8 for receiving a Flusstechniks ⁇ container 9.
  • This liquid container 9 can be removed from the humidifier housing 8 and reinserted.
  • 1 shows the device 1 with the liquid container 9 removed.
  • a valve arrangement 10 with a main flow shutoff valve 11 and two secondary flow shutoff valves 12 is provided.
  • a common valve spool 13 is assigned to the two bypass check valves 12.
  • the first flow path 6a is opened or closed with the main flow shutoff valve 11, and the second flow path 6b, which connects the gas humidifier 5 with the flow guide 3 as a bypass, is opened or closed with the two secondary flow shutoff valves 12.
  • the main flow shut-off valve 11 is interposed in the flow direction behind the by-pass inlet 14 and before the by-pass outlet 15 in the flow guide 3.
  • the two bypass check valves 12 are in turn interposed in the by-pass inlet 14 and the by-pass outlet 15, respectively.
  • the main flow shut-off valve 11 is displaceably guided transversely to the main flow direction and parallel to the direction of insertion (arrow E) of the liquid container 9.
  • the main flow shutoff valve 11 has a ramp 16. This run-up slope 16 interacts with an actuating end face 17 of the valve slide 13, which is displaceably guided transversely to the direction of movement of the main flow shut-off valve 11. This results in a forced coupling of the main flow shutoff valve 11 and the secondary flow shutoff valves 12.
  • a button 18 is also provided on the main flow shutoff valve 11, which pushes into the humidifier housing 8 and can be acted upon by the liquid container 9.
  • the button 18 and thus also the main flow shut-off valve 11 are automatically actuated, as a result of which the first flow path 6a is closed (FIG. 2).
  • the bypass shutoff valves 12 are opened at the same time.
  • the second flow path 6b is thus automatically opened and the first flow path 6a is closed, bypassing the gas humidifier 5.
  • the breathing gas then flows from the breathing gas source 2 via the second flow path 6b to the gas humidifier 5, where it is humidified at the admixing point 7.
  • the admixing point 7 (FIGS. 3, 4) is the area within the liquid container 9 which is located above the liquid contained therein. In this area is the evaporated part of the liquid that is used to humidify the breathing gas.
  • a level limit is provided in the liquid container 9. This is formed by an outlet connection 20 arranged on the bottom 19 of the liquid container 9. If the liquid container 9 is filled too strongly, this excess liquid is discharged from the gas humidifier 5 via the outlet connection 20 and a discharge line 21. The maximum fill level is thus determined by the height h of the drain connector 20.
  • the container inlet 22 and the container outlet 23 of the liquid container 9 are each arranged at a distance above the maximum liquid level. The respiratory gas flowing in and out thus only comes into contact with the vapor in the admixing point 7 above the liquid level, but not with the liquid itself. The liquid cannot therefore be entrained into the flow guide 3 by the respiratory gas.
  • a return spring (not shown in more detail) is provided at one end 24 of the valve slide 13, which retracts the valve slide 13 in when the liquid container 9 is removed Moves in the direction of arrow P (Fig. 2).
  • the bypass check valves 12 are closed.
  • the actuating end face 17 acts on the run-up slope 16, as a result of which the main flow shut-off valve 11 is displaced in the direction of the arrow P2 and the first flow path 6a is thus opened bypassing the gas humidifier 5.
  • the gas humidifier 5 has a heating device, which is arranged in the region of the liquid container 9 and is not shown in detail. This is electrically connected to a spring-loaded electrical switch button 25.
  • This switch button 25 is acted upon by the liquid container 9 in its position of use inserted into the humidifier housing 8 and is in its actuating position. When the liquid container 9 is inserted, the heating device for steam generation is thus also automatically switched on. On the other hand, when the liquid container 9 is removed from the humidifier housing 8, the spring-loaded switch button 25 is switched over and the heating device is thus switched off.
  • the heater therefore only works for used liquid container 9, ie when the gas humidifier 5 is used, which reduces the power consumption of the device 1 when the gas humidifier 5 is not used.
  • Lateral guide profiles 26 are provided on the liquid container 9, which engage in corresponding guide grooves 27 of the humidifier housing 8. This facilitates the insertion of the liquid container 9 into the humidifier housing 8 and improves the hold of the liquid container 9 within the humidifier housing 8.
  • the filling opening 28 accessible from the outside, through which the liquid container 9 can be filled. So that the water vapor cannot escape through this filling opening 28, the filling opening 28 is closed with a stopper 29.

Abstract

A device (1) for gas supply for sleep apnea has a respiratory gas source (2) which leads to at least one respiratory opening of a patient via a flow guiding element (3). The flow guiding element (3) is connected with a gas humidifier (5) for delivering a liquid in portions from a reservoir of liquid stored in a container for liquid (9) to the respiratory gas to be supplied. The flow guiding element (3) of the device (19 has at least two pre-selectable delivery paths (6a, 6b), a first flow path (6a) leading to the respiratory opening of the patient, by-passing the gas humidifier (5), and a second flow path (6b) leading to the respiratory opening of the patient via an admixing area (7). This admixing area (7) is connected with the gas humidifier (5). In the flow paths (6a, 6b) of the flow guiding element (3), a valve system (10) with reciprocal forced control is provided. The valve system (10) is connected to a control device by which it can be controlled. The valve system can be switched into the first flow path (6a) when removing the container for liquid (9) or into the second flow path (6b) when inserting the container for liquid (9).

Description

Vorrichtung zur Gaszufuhr bei Schlafapnoe Device for supplying gas for sleep apnea
Die Erfindung bezieht sich auf eine Vorrichtung zur Gaszufuhr bei Schlafapnoe mit einer Atemgasquelle, die über eine Stromungsfuhrung zu wenigstens einer Atemöffnung eines Patienten führt, wobei die Strömungsführung mit einem Gasbefeuchter in Verbindung steht zur Abgabe einer in einem Flüssigkeitsreservoir bevorrateten Flüssigkeit in Teilmengen an das zuzuführende Atemgas .The invention relates to a device for gas supply in sleep apnea with a respiratory gas source, which leads to at least one breathing opening of a patient via a flow guide, the flow guide being connected to a gas humidifier in order to dispense a liquid stored in a liquid reservoir in partial quantities to the breathing gas to be supplied .
Es sind bereits verschiedene Vorrichtungen bekannt, um bei Apnoe- Patienten ein Erschlaffen der Luftröhre während des Schlafs, was zu einer unbewußten Atemnot führt, zu verhindern. Beispielsweise kennt man Gesichtsmasken, die auf den Nasenbereich des Patienten aufgesetzt werden. Dem Patienten werden über diese Gesichtsmaske und einem über einen Luftschlauch mit der Gesichtsmaske verbundenen Gebläse geringe Mengen Atemluft zugeführt. Dadurch wird im Nasenbereich des Patienten ein Überdruck erzeugt, der bewirkt, daß die Luftröhre des Patienten aufgedrückt und infolge dessen eine unbewußte Atemnot verhindert wird.Various devices are already known to prevent the trachea from sagging during sleep in apnea patients, which leads to unconscious shortness of breath. For example, face masks are known that are placed on the nose area of the patient. The patient is supplied with small amounts of breathing air via this face mask and a blower connected to the face mask via an air hose. This creates an overpressure in the patient's nose area, which causes the patient's trachea to be forced open and, as a result, an unconscious shortness of breath to be prevented.
Bei trockener Raumluft oder bei Erkältungskrankheiten können jedoch die Schleimhäute des Patienten austrocknen, was zu Schmerzen oder zu Nasenbluten führen kann. Um ein Austrocknen der Schleimhäute zu verhindern, hat man Vorrichtungen geschaffen, bei denen vor den zur Gesichtsmaske führenden Luftleitungen Luftbefeuchter angeordnet sind.If the air is dry or if you have a cold, the patient's mucous membranes can dry out, which can lead to pain or nosebleeds. In order to prevent the mucous membranes from drying out, devices have been created in which humidifiers are arranged in front of the air lines leading to the face mask.
Nachteilig bei diesen bisher bekannten Vorrichtungen ist, daß der Befeuchter stets mitverwendet werden muß, da andernfalls die Atemgasleitung in der Vorrichtung unterbrochen ist. Der Befeuchter ist jedoch nicht immer zwingend erforderlich. Bei ohnehin schon hoher Luftfeuchtigkeit, beispielsweise im Sommer, wird eine zusätzliche Befeuchtung der Atemluft von vielen Patienten als störend empfunden. Darüber hinaus stellt der Befeuchter hohe Anforderungen an die Hygiene, die bei ständig verwendetem Befeuchter einen erheblichen zusätzlichen Aufwand erfordern. Da der Befeuchter über eine Heizvorrichtung verfügt, mit der ein Wasservorrat allmählich verdampft wird, hat ein permanent mitbenutzter Befeuchter einen hohen Stromverbrauch zur Folge.A disadvantage of these previously known devices is that the humidifier must always be used, otherwise the breathing gas line in the device is interrupted. However, the humidifier is not always essential. If the air humidity is already high, for example in summer, additional humidification of the breathing air is perceived as disruptive by many patients. In addition, the humidifier places high demands on hygiene, which require considerable additional effort when the humidifier is used continuously. Since the humidifier has a heating device with which a water supply is gradually evaporated, a humidifier that is permanently used results in high power consumption.
Es besteht daher insbesondere die Aufgabe, eine Vorrichtung der eingangs erwähnten Art zu schaffen, welche die oben erwähnten Nachteile des Standes der Technik vermeidet.There is therefore in particular the object of creating a device of the type mentioned at the outset which avoids the above-mentioned disadvantages of the prior art.
Die erfindungsgemäße Lösung dieser Aufgabe besteht darin, daß die Strömungsführung der Vorrichtung zumindest zwei vorwählbare Strömungswege hat, von denen ein erster Strömungsweg unter Umgehung des Gasbefeuchters zur Atemöffnung des Patienten führt und von denen ein zweiter Strömungsweg über eine Zumischstelle zur Atemöffnung des Patienten führt, welche Zumischstelle mit dem Gasbefeuchter in Verbindung steht.The solution to this problem according to the invention is that the flow guidance of the device has at least two preselectable flow paths, of which a first flow path leads to the patient's breathing opening bypassing the gas humidifier and of which a second flow path leads to the patient's breathing opening via a mixing point, which mixing point communicates with the gas humidifier.
Das Atemgas kann bei Bedarf über den ersten Strömungsweg geführt werden. So kann die Vorrichtung auch ohne den Gasbefeuchter verwendet und dem Patienten unbefeuchtetes Atemgas zugeführt werden. Wahlweise kann das Atemgas auch über den zweiten Strömungsweg geführt werden, wobei das Atemgas an der Zumischstelle befeuchtet wird und dem Patienten dieses befeuchtete Atemgas zugeführt wird.If necessary, the breathing gas can be conducted via the first flow path. Thus, the device can also be used without the gas humidifier and the patient can be supplied with non-humidified breathing gas. The breathing gas can optionally also be conducted via the second flow path, the breathing gas being humidified at the admixing point and this humidified breathing gas being supplied to the patient.
Die beiden Strömungswege können auf unterschiedliche Art und Weise angeordnet sein. Beispielsweise können von der Atemgasquelle zwei separate Gasleitungen ausgehen, von denen die erste direkt an einen Atemgas-Austritt geführt ist und von denen die zweite mit dem Gasbefeuchter verbunden ist. Eine weitere Atemgasleitung führt dann vom Gasbefeuchter zum Atemgas-Austritt. Es ist auch möglich, zwei Atemgasquellen vorzusehen, wobei eine der Atemgasquellen mit dem Gasbefeuchter in Verbindung steht. Von beiden Atemgasquellen geht jeweils ein Strömungsweg aus, die vor einem gemeinsamen Atemgas-Austritt ineinander münden. Eine weitere Möglichkeit besteht darin, den zweiten Strömungsweg als einen noch zu beschreibenden By-pass auszugestalten.The two flow paths can be arranged in different ways. For example, two separate gas lines can originate from the respiratory gas source, the first of which is led directly to a respiratory gas outlet and the second of which is connected to the gas humidifier. Another breathing gas line then leads from the gas humidifier to the breathing gas outlet. It is also possible to provide two breathing gas sources, one of the breathing gas sources being connected to the gas humidifier. A flow path starts from both respiratory gas sources, which flow into one another before a common respiratory gas outlet. Another possibility is to design the second flow path as a bypass to be described later.
Eine Ausgestaltung der Erfindung sieht vor, daß der Gasbefeuchter einen Flüεsigkeitsbehälter als Flüssigkeitsreservoir hat, welcher Flüssigkeitsbehälter in einemBefeuchter- und/oder Vorrichtungsgehäuse entnehmbar und wiedereinsetzbar angeordnet ist. Der Flüssigkeitsbehälter kann dann bei Nichtbenutzung des Gasbefeuch- ters aus der Vorrichtung entnommen und leicht gereinigt werden, was die Handhabung der Vorrichtung im Hinblick auf hygienische Gesichtspunkte erheblich vereinfacht.An embodiment of the invention provides that the gas humidifier has a liquid container as a liquid reservoir, which liquid container can be removed and reinserted in a humidifier and / or device housing. When the gas humidifier is not in use, the liquid container can then be removed from the device and easily cleaned, which considerably simplifies the handling of the device with regard to hygienic aspects.
Es ist zweckmäßig, wenn in den Strömungswegen der Strömungsführung eine Ventilanordnung mit gegenseitiger Zwangssteuerung vorgesehen ist. Mit Hilfe der Ventilanordnung wird der jeweils nicht benötigte Strömungsweg verschlossen, während der andere Strömungsweg geöffnet ist. Durch die ZwangsSteuerung wird erreicht, daß jeweils nur einer der Strömungswege geöffnet ist. Beim Öffnen des ersten Strömungsweges unter Umgehung des Gasbefeuchters wird automatisch der zweite Strömungsweg zur Zumischstelle verschlossen und umgekehrt. Ein versehentliches, nicht sinnvolles gleichzeitiges Öffnen beider Strömungswege ist somit verhindert.It is expedient if a valve arrangement with mutual positive control is provided in the flow paths of the flow guide. With the help of the valve arrangement, the flow path that is not required is closed while the other flow path is open. The forced control ensures that only one of the flow paths is open at a time. When opening the first flow path bypassing the gas humidifier, the second flow path to the admixing point is automatically closed and vice versa. An accidental, not sensible simultaneous opening of both flow paths is prevented.
Es ist besonders vorteilhaft, wenn die Ventilanordnung mit einer Steuereinrichtung in Steuerverbindung steht zum Umschalten der Ventilanordnung einerseits beim Entnehmen des Flussigkeitsbehälters in den ersten Strömungsweg und andererseits beim Einsetzen des Flüssigkeitsbehälters in den zweiten Strömungsweg. Bei eingesetztem Flüssigkeitsbehälter ist dann automatisch der zweite Strömungsweg geöffnet, so daß das Atemgas über die Zumischstelle geführt wird, während bei entnommenem Flüssigkeitsbehälter dieser zweite Strömungsweg verschlossen und der erste Strömungsweg unter Umgehung des Gasbefeuchters geöffnet ist. Ein manuelles Umschalten der Ventilanordnung beim Entnehmen beziehungsweise Wiedereinsetzen des Flüssigkeitsbehälters ist nicht erforderlich. Ein versehentliches Führen des Atemgases über den falschen Strömungsweg, beispielsweise bei entferntem Flüssigkeitsbehälter über den zweiten Strömungsweg ist somit verhindert.It is particularly advantageous if the valve arrangement is in control connection with a control device for switching the valve arrangement on the one hand when the liquid container is removed into the first flow path and on the other hand when the liquid container is inserted into the second flow path. When the liquid container is inserted, the is automatically second flow path is opened so that the breathing gas is passed through the admixing point, while when the liquid container is removed, this second flow path is closed and the first flow path is open bypassing the gas humidifier. A manual switching of the valve arrangement when removing or reinserting the liquid container is not necessary. Accidental guiding of the breathing gas via the wrong flow path, for example when the liquid container is removed, is thus prevented via the second flow path.
Eine Ausführungsform sieht vor, daß der Gasbefeuchter über einen By-pass mit der Strömungsführ ng in Verbindung steht, welcher By-pass ein- und/oder austrittsseitig sperrbar ist. Der zweite Strömungsweg ist dann durch diesen By-pass gebildet. Der By-pass zweigt eintrittsseitig von dem ersten Strömungsweg ab und führt zu einem Eingang des Gasbefeuchters, während der By-pass austrittsseitig vom Gasbefeuchter wegführt und wieder in den ersten Strömungsweg mündet. Der By-pass ist ein- und/oder austrittsseitig sperrbar, damit das Atemgas, wenn dieses über den ersten Strömungsweg geführt wird, nicht in unerwünschter Weise über den By-pass ausweichen kann. Um diese Trennung von erstem und zweitem Strömungsweg zu optimieren, sollte der By-pass ein- und/oder austrittsseitig sperrbar sein. Bei einer Ausführungsform, bei der der erste Strömungsweg nur dann geöffnet ist, wenn der Flüssigkeitsbehälter aus der Vorrichtung entnommen ist, kann eine beidseitige Sperrung des By-passes zweckmäßig sein, um ein Entweichen von Atemgas am By-pass ein- oder austrittsseitig zu verhindern.One embodiment provides that the gas humidifier is connected to the flow guide via a bypass, which bypass can be blocked on the inlet and / or outlet side. The second flow path is then formed by this by-pass. The by-pass branches off from the first flow path on the inlet side and leads to an inlet of the gas humidifier, while the by-pass leads away from the gas humidifier on the outlet side and flows back into the first flow path. The bypass can be blocked on the inlet and / or outlet side, so that the breathing gas, when it is routed via the first flow path, cannot undesirably evade via the bypass. In order to optimize this separation of the first and second flow path, the bypass should be lockable on the entry and / or exit side. In one embodiment, in which the first flow path is only open when the liquid container is removed from the device, blocking the bypass on both sides can be expedient in order to prevent breathing gas from escaping at the bypass on the inlet or outlet side.
Es ist besonders vorteilhaft, wenn ein Hauptstrom-Sperrventil vorgesehen ist, welches in Strömungsrichtung hinter dem By-pass- Eintritt und vor dem By-pass-Austritt in die Strömungsführung zwischengeschaltet ist und das mit zumindest einem, in den By- pass-Eintritt und/oder in den By-pass-Austritt zwischengeschaltetem Nebenstrom-Sperrventil wechselweise offen- und schließbar ist. Das Atemgas kann bei geöffneten Nebenstrom- Sperrventilen über den By-pass durch den Gasbefeuchter strömen, während der erste Strömungsweg unter Umgehung des Gasbefeuchters durch das Hauptström-Sperrventil unterbrochen ist. Wird andererseits der erste Strömungsweg durch Öffnen des Hauptstrom- Sperrventiles freigegeben, so wird (werden) das (die) Nebenstrom- Sperrventil (e) automatisch verschlossen und der By-pass unterbrochen, so daß kein Atemgas mehr durch den Gasbefeuchter gelangen kann .It is particularly advantageous if a main flow shut-off valve is provided, which is interposed in the flow direction behind the by-pass inlet and before the by-pass outlet in the flow guide and that with at least one in the bypass pass inlet and / or bypass outlet interposed bypass check valve can be alternately opened and closed. The breathing gas can flow through the gas humidifier via the bypass when the bypass shut-off valves are open, while the first flow path is interrupted bypassing the gas humidifier through the main flow shut-off valve. If, on the other hand, the first flow path is opened by opening the main flow shut-off valve, the secondary flow shut-off valve (s) are automatically closed and the by-pass is interrupted so that breathing gas can no longer get through the gas humidifier.
Es ist vorteilhaft, wenn die Sperrventile als Ventilschieber ausgebildet sind, die vorzugsweise mechanisch miteinander zwangsgesteuert sind. Die Ventilanordnung läßt sich mit diesenIt is advantageous if the check valves are designed as valve spools, which are preferably mechanically positively controlled with one another. The valve arrangement can be used with these
Maßnahmen besonders einfach und somit auch kostengünstig realisieren .Implement measures particularly simply and therefore also cost-effectively.
Eine bevorzugte Ausführungsform sieht vor, daß die Sperrventile zum Ansteuern in Abhängigkeit von dem in das Befeuchterund/oder Vorrichtungsgehäuse eingesetzten oder daraus entnommenen Fleuchtigkeitsbehälter mit diesem in Steuerverbindung stehen und daß die Sperrventile dazu vorzugsweise mit zumindest einem vom Flüssigkeitsbehälter beaufschlagbaren Taster antriebs- gekoppelt sind.A preferred embodiment provides that the shut-off valves for actuation are in control connection with the moisture container inserted into or removed from the humidifier and / or device housing, and that the shut-off valves are preferably drive-coupled for this purpose with at least one button which can be acted upon by the liquid tank.
Dabei ist es besonders vorteilhaft, wenn beim Einsetzen des Flussigkeitsbehälters in das Befeuchter- und/oder Vorrichtungsgehäuse das Hauptstromventil gegen eine Rückstellkraft in seine Schließstellung und das (die) Nebenstrom-Sperrventil (e) gegen eine Rückstellkraft in seine (ihre) Offenstellung bewegbar sind. Beim Einsetzen des Flüssigkeitsbehälters wird der Taster betätigt und der erste Strömungsweg verschlossen, während der zweite Strömungsweg zur Zumischstelle geöffnet wird. Im Gegenzug wird beim Entfernen des Flussigkeitsbehälters durch die Rückstellkraft das Hauptstrom-Sperrventil automatisch in seine Offenstellung bewegt und somit der erste Strömungsweg unter Umgehung des Gasbefeuchters geöffnet. Gleichzeitig wird (werden) das (die) Nebenstrom-Sperrventil (e) in seine (ihre) Schließstellung bewegt und somit der zweite Strömungsweg verschlossen. Somit kann sich das Atemgas jeweils nur über einen der Strömungswege ausbreiten und mit dem Einsetzen beziehungsweise Entfernen des Flüssigkeits- ' behälters ist der jeweilige Strömungsweg vorgegeben.It is particularly advantageous if, when the liquid container is inserted into the humidifier and / or device housing, the main flow valve can be moved into its closed position against a restoring force and the secondary flow shut-off valve (s) can be moved into its (its) open position against a restoring force. When the liquid container is inserted, the button is actuated and the first flow path is closed, while the second flow path to the admixing point is opened. In return, when the liquid container is removed by the restoring force the main flow shut-off valve automatically moves to its open position, thus opening the first flow path bypassing the gas humidifier. At the same time, the bypass shut-off valve (s) is (are) moved into their closed position and the second flow path is thus closed. Thus, the breathable gas can each only propagate over one of the flow paths and with the insertion or removal of the liquid 'container, the respective flow path is predetermined.
Eine weitere Ausgestaltung sieht vor, daß das Hauptstrom- Sperrventil quer zur Hauptεtromrichtung und etwa parallel zur Einschieberichtung des Flüssigkeitsbehälters im Vorrichtungsgehäuse verschieblich geführt ist und daß der Ventilschieber des Hauptstrom-Sperrventileε gegen eine Rückstellkraft in Einschieberichtung des Flüssigkeitsbehälters verschieblich ist und mit dem Flüssigkeitsbehälter in Antriebsverbindung steht.A further embodiment provides that the main flow shut-off valve is displaceably guided transversely to the main flow direction and approximately parallel to the direction of insertion of the liquid container in the device housing, and that the valve slide of the main flow shut-off valve is displaceable against a restoring force in the direction of insertion of the liquid container and is in drive connection with the liquid container .
Es kann zweckmäßig sein, wenn dem By-pass-Eintritt und dem By- pass-Austritt ein gemeinsamer Ventilschieber zugeordnet ist, der vorzugsweise mit dem Hauptstrom-Sperrventil in Antriebsverbindung steht.It can be expedient if the bypass inlet and the bypass outlet are assigned a common valve slide, which is preferably in drive connection with the main flow shut-off valve.
Es kann zudem vorteilhaft sein, wenn am Hauptstrom-Sperrventil eine Auflaufschräge zum Betätigen des (der) Nebenstrom- Sperrventile (ε) mittels einer abgeleiteten Querbewegung vorgesehen ist und wenn dazu die Auflaufschräge mit einer Betätigungs-Stirnfläche des quer zur Bewegungsrichtung des Hauptstrom-Sperrventiles verschieblich geführten Ventilschiebers deε Nebenεtrom-Sperrventiles zusammenwirk .It can also be advantageous if a run-up slope is provided on the main flow shut-off valve for actuating the secondary flow shut-off valve (ε) by means of a derived transverse movement, and if the run-up slope is displaceable with an actuating end face of the cross flow direction of the main flow shut-off valve guided valve spool of the bypass check valve cooperate.
Durch alle diese Maßnahmen läßt sich die Ventilanordnung mit einem geringen konstruktiven Aufwand realisieren. Dies bezieht sich sowohl auf die Zwangskopplung des Hauptstrom-Sperrventils und des (der) Nebenstrom-Sperrventile (s ) als auch auf die Zwangsbetätigung der Ventile beim Einsetzen beziehungsweise Entfernen des Flüssigkeitsbehälters.Through all of these measures, the valve arrangement can be implemented with little design effort. This applies to both the forced coupling of the main flow shut-off valve and the secondary flow shut-off valve (s) as well as the Forced operation of the valves when inserting or removing the liquid container.
Eine weitere Ausgestaltung der Erfindung sieht vor, daß der Gasbefeuchter zur Dampferzeugung eine im Bereich des Flussigkeitsbehälters angeordnete Heizeinrichtung hat, die mit einem federbelasteten elektrischen Schalttaster elektrisch verbunden ist, welcher Schalttaster vom Flüssigkeitsbehälter in dessen im Behälter- und/oder Vorrichtungsgehäuse eingesetzter Gebrauchsstellung beaufschlagt ist und sich in seiner Betätigungsstellung befindet. Bei eingesetztem Flüssigkeitsbehälter ist der Stromkreis der Heizeinrichtung in diesem Bereich automatisch geschlossen, so daß in dem Gasbefeuchter Dampf zur Befeuchtung des Atemgases gebildet werden kann. Beim Entfernen des Flüssigkeitsbehälters wird die Heizeinrichtung durch die Federbelastung des elektrischen Schalttasters automatisch ausgeschaltet, wodurch ein unnötiger Stromverbrauch vermieden wird .Another embodiment of the invention provides that the gas humidifier for steam generation has a heating device arranged in the area of the liquid container, which is electrically connected to a spring-loaded electrical switch button, which switch button is acted upon by the liquid container in its position of use in the container and / or device housing, and is in its operating position. When the liquid container is inserted, the circuit of the heating device is automatically closed in this area, so that steam for humidifying the breathing gas can be formed in the gas humidifier. When the liquid container is removed, the heating device is automatically switched off by the spring load of the electrical switch button, thereby avoiding unnecessary power consumption.
Es kann zudem vorteilhaft sein, wenn der Flüssigkeitspegel im Flüssigkeitsbehälter mittels eines Überlaufs begrenzt ist und wenn der mit dem By-pass verbindbare Behälter-Eintritt und Behälter-Austritt vorzugsweise mit Abstand oberhalb des maximalen Flüssigkeitεpegel angeordnet sind. Dadurch wird sichergestellt, daß sich das durch den Gasbefeuchter geführte Atemgas nur mit Wasserdampf verbindet und keine Wassertropfen in die Atemgasleitungen mitgerissen werden.It can also be advantageous if the liquid level in the liquid container is limited by means of an overflow and if the container inlet and outlet that can be connected to the bypass are preferably arranged at a distance above the maximum liquid level. This ensures that the breathing gas led through the gas humidifier only connects with water vapor and that no water drops are entrained into the breathing gas lines.
Insgesamt ergibt sich eine Vorrichtung zur Gaszufuhr bei Schlafapnoe, die wahlweise mit oder ohne Gasbefeuchter verwendet werden kann. Die Vorrichtung wird insbesondere dadurch, daß der Flüssigkeitsbehälter aus dem Befeuchter- beziehungsweise Vorrichtungsgehäuεe entnehmbar und wieder einsetzbar ist, den hohen hygienischen Anforderungen gerecht. Zudem wird der Stromverbrauch der Vorrichtung reduziert, da die Heizeinrichtung der Vorrichtung bei Nichtbenutzung des Gasbefeuchters abgeschaltet werden kann.Overall, there is a device for gas supply for sleep apnea, which can be used either with or without a gas humidifier. In particular, the fact that the liquid container can be removed from the humidifier or device housing and used again means that the device meets the high hygienic requirements. In addition, the Power consumption of the device is reduced since the heating device of the device can be switched off when the gas humidifier is not in use.
Nachstehend ist die Erfindung anhand der Zeichnungen noch näher erläutert .The invention is explained in more detail below with reference to the drawings.
Es zeigt in schematischer Darstellung:It shows in a schematic representation:
Fig. 1 eine Aufsicht auf eine erfindungsgemäße Vorrichtung mit aus dem Vorrichtungsgehäuse entnommenem Flüssigkeitsbehälter,1 is a plan view of a device according to the invention with a liquid container removed from the device housing,
Fig. 2 die Vorrichtung gemäß Fig. 1, jedoch mit eingesetztem Flüssigkeitsbehälter,2 shows the device according to FIG. 1, but with an inserted liquid container,
Fig. 3 eine seitliche Schnittdarstellung der Vorrichtung gemäß Linie A-A in Fig. 2, undFig. 3 is a side sectional view of the device according to line A-A in Fig. 2, and
Fig. 4 eine seitliche Schnittdarstellung der Vorrichtung gemäß der Linie B-B in Fig. 2.FIG. 4 shows a sectional side view of the device along line B-B in FIG. 2.
Eine im ganzen mit 1 bezeichnete Vorrichtung zur Gaszufuhr bei Schlafapnoe weist eine Atemgasquelle 2 auf, die über eine Strömungsführung 3 zu einem Atemgas-Austritt 4 führt.A device for gas supply in sleep apnea, designated as a whole by 1, has a breathing gas source 2, which leads to a breathing gas outlet 4 via a flow guide 3.
Die Atemgasquelle 2 ist in den Figuren durch ein Gebläse gebildet, mit dem die die Vorrichtung umgebende Raumluft in die Strömungsführung 3 befördert wird. Die Atemgasquelle könnte jedoch auch beispielsweise eine Pumpe oder eine Gasflasche, die das in ihr enthaltene, unter Druck stehende Gas über ein Ventil in die Strömungsführung 3 abgibt, sein. An dem Atemgas-Auεtritt 4 kann ein nicht näher dargestellter Luftschlauch angeschlossen sein, der die Vorrichtung 1 mit einer ebenfalls nicht dargestellten Gesichtsmaske, die auf den Nasenbereich eines Patienten aufgesetzt werden kann, verbindet. Die Stromungsfuhrung 3 steht mit einem Gasbefeuchter 5 in Verbindung und hat zwei Strömungswege 6a, 6b. Der erste Strömungsweg 6a führt unter Umgehung des Gasbefeuchters 5 zu dem Atemgas-Austritt 4 und der zweite Strömungsweg 6b führt über eine noch näher zu erläuternde Zumischstelle 7, die mit dem Gasbefeuchter 5 in Verbindung steht, zu dem Atemgas-Austritt 4.The breathing gas source 2 is formed in the figures by a blower with which the ambient air surrounding the device is conveyed into the flow guide 3. The breathing gas source could, however, also be, for example, a pump or a gas bottle, which releases the pressurized gas contained therein via a valve into the flow guide 3. An air hose (not shown in more detail) can be connected to the breathing gas outlet 4, which connects the device 1 with a face mask (also not shown) that extends to the face A patient's nose area can be connected. The flow guide 3 is connected to a gas humidifier 5 and has two flow paths 6a, 6b. Bypassing the gas humidifier 5, the first flow path 6a leads to the breathing gas outlet 4 and the second flow path 6b leads to the breathing gas outlet 4 via an admixing point 7 to be explained in more detail, which is connected to the gas humidifier 5.
Das in den Figuren dargestellte Ausführungsbeispiel einer Vorrichtung 1 zur Gaszufuhr bei Schlafapnoe weist neben der Atemgasquelle 2, der Strömungsführung 3 und dem Atemgas-Austritt 4 ein Befeuchtergehäuse 8 zur Aufnahme eines Flussigkeits¬ behälters 9 auf. Dieser Flüssigkeitsbehälter 9 ist aus dem Befeuchtergehäuse 8 entnehmbar und wiedereinsetzbar. Fig. 1 zeigt die Vorrichtung 1 mit entnommenem Flüssigkeitsbehälter 9. Außerdem ist eine Ventilanordnung 10 mit einem Hauptstrom- Sperrventil 11 und zwei Nebenstrom-Sperrventilen 12 vorgesehen. Den beiden Nebenstrom-Sperrventilen 12 ist ein gemeinsamer Ventilschieber 13 zugeordnet. Mit dem Hauptstrom-Sperrventil 11 wird der erste Strömungsweg 6a geöffnet beziehungsweise verschlossen, und mit den beiden Nebenstrom-Sperrventilen 12 wird der zweite Strömungsweg 6b, der als By-pass den Gasbefeuchter 5 mit der Strömungsführung 3 verbindet, geöffnet beziehungs- weise verschlossen. Das Hauptström-Sperrventil 11 ist in Strömungsrichtung hinter dem By-pass-Eintritt 14 und vor dem By-pass-Austritt 15 in die Strömungsführung 3 zwischengeschaltet. Die beiden Nebenstrom-Sperrventile 12 sind ihrerseits in den By-pass-Eintritt 14 beziehungsweise den By-pass-Austritt 15 zwiεchengeschalte .The embodiment of a device 1 for supplying gas for sleep apnea as shown in the figures, next to the breathing gas source 2, the flow guide 3 and the breathing gas outlet 4, a humidifier 8 for receiving a Flussigkeits ¬ container 9. This liquid container 9 can be removed from the humidifier housing 8 and reinserted. 1 shows the device 1 with the liquid container 9 removed. In addition, a valve arrangement 10 with a main flow shutoff valve 11 and two secondary flow shutoff valves 12 is provided. A common valve spool 13 is assigned to the two bypass check valves 12. The first flow path 6a is opened or closed with the main flow shutoff valve 11, and the second flow path 6b, which connects the gas humidifier 5 with the flow guide 3 as a bypass, is opened or closed with the two secondary flow shutoff valves 12. The main flow shut-off valve 11 is interposed in the flow direction behind the by-pass inlet 14 and before the by-pass outlet 15 in the flow guide 3. The two bypass check valves 12 are in turn interposed in the by-pass inlet 14 and the by-pass outlet 15, respectively.
Das Hauptstrom-Sperrventil 11 ist quer zur Hauptstromrichtung und parallel zur Einschieberichtung (Pfeil E) des Flussigkeitsbehälters 9 verschieblich geführt. Das Hauptstrom-Sperrventil 11 weist eine Auflaufschräge 16 auf. Diese Auflaufschräge 16 wirkt mit einer Betätigungs-Stirnfläche 17 des quer zur Bewegungsrichtung des Hauptstrom-Sperrventiles 11 verschieblich geführten Ventilschiebers 13 zusammen. Somit ergibt sich eine Zwangskopplung des Hauptstrom-Sperrventils 11 undder Nebenstrom- Sperrventile 12. An dem Hauptstrom-Sperrventil 11 ist noch ein Taster 18 vorgesehen, der in das Befeuchtergehäuse 8 hineinragt und von dem Flüssigkeitsbehälter 9 beaufschlagbar ist. Beim Einsetzen des Flussigkeitsbehälters 9 in das Befeuchtergehäuse 8 wird automatisch der Taster 18 und somit auch das Hauptstrom- Sperrventil 11 betätigt, wodurch der erste Strömungsweg 6a verschlossen wird (Fig. 2). Durch die Zwangskopplung der Auflaufschräge 16 des Hauptstrom-Sperrventils 11 mit der Betätigungsstirnfläche 17 des Ventilschiebers 13 werden dabei gleichzeitig die Nebenstrom-Sperrventile 12 geöffnet. Beim Einsetzen des Flüssigkeitsbehälters 9 in das Befeuchtergehäuse 8 wird somit automatisch der zweite Strömungsweg 6b geöffnet und der erste Strömungsweg 6a unter Umgehung des Gasbefeuchters 5 verschlossen. Das Atemgas strömt dann von der Atemgasquelle 2 über den zweiten Strömungsweg 6b zu dem Gasbefeuchter 5, wo es an der Zumischstelle 7 befeuchet wird.The main flow shut-off valve 11 is displaceably guided transversely to the main flow direction and parallel to the direction of insertion (arrow E) of the liquid container 9. The main flow shutoff valve 11 has a ramp 16. This run-up slope 16 interacts with an actuating end face 17 of the valve slide 13, which is displaceably guided transversely to the direction of movement of the main flow shut-off valve 11. This results in a forced coupling of the main flow shutoff valve 11 and the secondary flow shutoff valves 12. A button 18 is also provided on the main flow shutoff valve 11, which pushes into the humidifier housing 8 and can be acted upon by the liquid container 9. When the liquid container 9 is inserted into the humidifier housing 8, the button 18 and thus also the main flow shut-off valve 11 are automatically actuated, as a result of which the first flow path 6a is closed (FIG. 2). By forcing the ramp slope 16 of the main flow shutoff valve 11 with the actuating face 17 of the valve spool 13, the bypass shutoff valves 12 are opened at the same time. When the liquid container 9 is inserted into the humidifier housing 8, the second flow path 6b is thus automatically opened and the first flow path 6a is closed, bypassing the gas humidifier 5. The breathing gas then flows from the breathing gas source 2 via the second flow path 6b to the gas humidifier 5, where it is humidified at the admixing point 7.
Die Zumischstelle 7 (Fig. 3, 4) ist der Bereich innerhalb des Flüssigkeitsbehälter 9, der sich oberhalb der darin enthaltenen Flüssigkeit befindet. In diesem Bereich befindet sich der verdampfte Teil der Flüssigkeit, der zum Befeuchten des Atemgases verwendet wird. Um zu verhindern, daß beim Befeuchten des Atemgases Flüssigkeitstropfen mitgerissen werden, ist in dem Flüssigkeitsbehälter 9 eine Füllstandsbegrenzung vorgesehen. Diese ist gebildet durch einen am Boden 19 des Flüssigkeits- behälters 9 angeordneten Ablaufstutzen 20. Bei zu starker Befüllung des Flüssigkeitsbehälters 9 wird diese überschüssige Flüssigkeit über den Ablaufstutzen 20 und eine Abführleitung 21 aus dem Gasbefeuchter 5 abgeleitet. Die maximale Füllstandshöhe ist somit durch die Höhe h des AblaufStutzens 20 bestimmt. Der Behälter-Eintritt 22 und der Behälter-Austritt 23 des Flüssigkeitsbehälters 9 sind jeweils mit Abstand oberhalb des maximalen Flüssigkeitspegels angeordnet. Das ein- beziehungsweise ausströmende Atemgas kommt somit nur mit dem oberhalb des Flüssigkeitspegels befindlichen Dampf in der Zumischstelle 7 in Verbindung, jedoch nicht mit der Flüssigkeit selbst. Die Flüssigkeit kann somit vom Atemgas nicht in die Strömungsführung 3 mitgerissen werden.The admixing point 7 (FIGS. 3, 4) is the area within the liquid container 9 which is located above the liquid contained therein. In this area is the evaporated part of the liquid that is used to humidify the breathing gas. In order to prevent liquid drops from being entrained when the breathing gas is moistened, a level limit is provided in the liquid container 9. This is formed by an outlet connection 20 arranged on the bottom 19 of the liquid container 9. If the liquid container 9 is filled too strongly, this excess liquid is discharged from the gas humidifier 5 via the outlet connection 20 and a discharge line 21. The maximum fill level is thus determined by the height h of the drain connector 20. The container inlet 22 and the container outlet 23 of the liquid container 9 are each arranged at a distance above the maximum liquid level. The respiratory gas flowing in and out thus only comes into contact with the vapor in the admixing point 7 above the liquid level, but not with the liquid itself. The liquid cannot therefore be entrained into the flow guide 3 by the respiratory gas.
Damit beim Entnehmen des Flüssigkeitsbehälters 9 aus dem Befeuchtergehäuse 8 automatisch der zweite Strömungsweg 6b verschlossen und der erste Strömungsweg 6a geöffnet wird, ist an dem einen Ende 24 des Ventilschiebers 13 eine nicht näher dargestellte Rückstellfeder vorgesehen, die beim Entnehmen des Flüssigkeitsbehälters 9 den Ventilschieber 13 in Richtung des Pfeiles P verschiebt (Fig. 2) . Dadurch werden die Nebenstrom- Sperrventile 12 verschlossen. Gleichzeitig wirkt die Betätigungsstirnfläche 17 auf die Auflaufschräge 16, wodurch das Hauptstrom- Sperrventil 11 in Richtung des Pfeiles P2 verschoben und somit der erste Strömungsweg 6a unter Umgehung des Gasbefeuchters 5 geöffnet wird.So that when the liquid container 9 is removed from the humidifier housing 8, the second flow path 6b is automatically closed and the first flow path 6a is opened, a return spring (not shown in more detail) is provided at one end 24 of the valve slide 13, which retracts the valve slide 13 in when the liquid container 9 is removed Moves in the direction of arrow P (Fig. 2). As a result, the bypass check valves 12 are closed. At the same time, the actuating end face 17 acts on the run-up slope 16, as a result of which the main flow shut-off valve 11 is displaced in the direction of the arrow P2 and the first flow path 6a is thus opened bypassing the gas humidifier 5.
Der Gasbefeuchter 5 hat zur Dampferzeugung eine im Bereich des Flüssigkeitsbehälterε 9 angeordnete, nicht näher dargestellte Heizeinrichtung. Diese ist mit einem federbelasteten elektrischen Schalttaster 25 elektrisch verbunden. Dieser Schalttaster 25 ist vom Flüssigkeitsbehälter 9 in dessen in das Befeuchtergehäuse 8 eingesetzten Gebrauchsstellung beaufschlagt und befindet sich in seiner Betätigungsstellung. Bei eingesetztem Flüssigkeits- behälter 9 ist somit auch automatisch die Heizeinrichtung zur Dampferzeugung eingeschaltet. Andererseits wird beim Herausnehmen des Flüssigkeitsbehälters 9 aus dem Befeuchtergehäuse 8 der federbelastete Schalttaster 25 um- und die Heizeinrichtung somit ausgeschaltet. Die Heizeinrichtung arbeitet also nur bei eingesetztem Flüssigkeitsbehälter 9, d.h. wenn der Gasbefeuchter 5 verwendet wird, was den Stromverbrauch der Vorrichtung 1 bei Nichtbenutzung des Gasbefeuchters 5 reduziert.To generate steam, the gas humidifier 5 has a heating device, which is arranged in the region of the liquid container 9 and is not shown in detail. This is electrically connected to a spring-loaded electrical switch button 25. This switch button 25 is acted upon by the liquid container 9 in its position of use inserted into the humidifier housing 8 and is in its actuating position. When the liquid container 9 is inserted, the heating device for steam generation is thus also automatically switched on. On the other hand, when the liquid container 9 is removed from the humidifier housing 8, the spring-loaded switch button 25 is switched over and the heating device is thus switched off. The heater therefore only works for used liquid container 9, ie when the gas humidifier 5 is used, which reduces the power consumption of the device 1 when the gas humidifier 5 is not used.
An dem Flüssigkeitsbehälter 9 sind seitliche Führungsprofile 26 vorgesehen, die in entsprechende Führungsnuten 27 des Befeuchtergehäuses 8 eingreifen. Dadurch wird das Einsetzen des Flüssigkeitsbehälters 9 in das Befeuchtergehäuse 8 erleichtert und der Halt des Flüssigkeitsbehälters 9 innerhalb des Befeuchtergehäuses 8 verbessert.Lateral guide profiles 26 are provided on the liquid container 9, which engage in corresponding guide grooves 27 of the humidifier housing 8. This facilitates the insertion of the liquid container 9 into the humidifier housing 8 and improves the hold of the liquid container 9 within the humidifier housing 8.
An der Oberseite des Flussigkeitsbehälters 9 ist eine von außen zugängliche Einfüllöffnung 28 vorgesehen, über die der Flüssigkeitsbehälter 9 gefüllt werden kann. Damit der Wasserdampf nicht durch diese Einfüllöffnung 28 entweichen kann, ist die Einfüllöffnung 28 mit einem Stopfen 29 verschlossen. At the top of the liquid container 9 there is a filling opening 28 accessible from the outside, through which the liquid container 9 can be filled. So that the water vapor cannot escape through this filling opening 28, the filling opening 28 is closed with a stopper 29.

Claims

Ansprüche Expectations
1. Vorrichtung zur Gaszufuhr bei Schlafapnoe mit einer Atemgasquelle, die über eine Strömungsführung zu wenigstens einer Atemöffnung eines Patienten führt, wobei die Strömungsführung mit einem Gasbefeuchter in Verbindung steht zur Abgabe einer in einem Flüssigkeitsreservoir bevorrateten Flüsεigkeit in Teilmengen an das zuzuführende Atemgas, dadurch gekennzeichnet, daß die Strömungsführung (3) der Vorrichtung (1) zumindest zwei vorwählbare Strömungswege (6a, 6b) hat, von denen ein erster Strömungsweg (6a) unter Umgehung des Gasbefeuchters (5) zur Atemöffnung des Patienten führt und von denen ein zweiter Strömungsweg (6b) über eine Zumischstelle (7) zur Atemöffnung des Patienten führt, welche Zumischstelle (7) mit dem Gasbefeuchter (5) in Verbindung steht.1. Device for supplying gas in the case of sleep apnea with a breathing gas source, which leads to at least one breathing opening of a patient via a flow guide, the flow guide being connected to a gas humidifier for delivering a liquid stored in a liquid reservoir in partial quantities to the breathing gas to be supplied, characterized in that that the flow guide (3) of the device (1) has at least two preselectable flow paths (6a, 6b), of which a first flow path (6a) bypassing the gas humidifier (5) leads to the patient's breathing opening and of which a second flow path (6b ) leads via a mixing point (7) to the patient's breathing opening, which mixing point (7) is connected to the gas humidifier (5).
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Gasbefeuchter (5) einen Flüssigkeitsbehälter (9) als Flüssigkeitsreservoir hat, welcher Flüssigkeitsbehälter (9) in einem Befeuchter- und/oder Vorrichtungsgehäuse (8) entnehmbar und wiedereinsetzbar angeordnet ist.2. Device according to claim 1, characterized in that the gas humidifier (5) has a liquid container (9) as a liquid reservoir, which liquid container (9) in a humidifier and / or device housing (8) is arranged removable and reinsertable.
Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß in den Strömungswegen (6a, 6b) der Strömungsführung (3) eine Ventilanordnung (10) mit gegenseitiger Zwangssteuerung vorgesehen ist.Device according to claim 1 or 2, characterized in that a valve arrangement (10) with mutual positive control is provided in the flow paths (6a, 6b) of the flow guide (3).
Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Ventilanordnung (10) mit einer Steuereinrichtung in Steuerverbindung steht zum Umschalten der Ventilanordnung (10) einerseits beim Entnehmen des Flüssigkeitsbehälters (9) in den ersten Strömungsweg (6a) und andererseits beim Einsetzen des Flüssigkeitsbehälters (9) in den zweiten Strömungsweg (6b) .Device according to one of claims 1 to 3, characterized in that the valve arrangement (10) is in control connection with a control device for switching the valve arrangement (10) on the one hand when the valve is removed Liquid container (9) in the first flow path (6a) and on the other hand when inserting the liquid container (9) in the second flow path (6b).
Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Gasbefeuchter (5) über einen By- pass mit der Strömungsführung (3) in Verbindung steht, welcher By-pass ein- und/oder austrittsseitig sperrbar ist .Device according to one of claims 1 to 4, characterized in that the gas humidifier (5) is connected via a bypass to the flow guide (3), which bypass can be blocked on the inlet and / or outlet side.
6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß ein Hauptstrom-Sperrventil (11) vorgesehen ist, welches in Strömungsrichtung hinter dem By-pass-Eintritt (14) und vor dem By-pass-Austritt (15) in die Strömungsrichtung (3) zwischengeschaltet ist und daß das Hauptstrom-Sperrventil (11) mit zumindest einem, in den By-pass-Eintritt (14) und/oder den By-pass-Austritt (15) zwischengeschalteten Nebenstrom-Sperrventil (12) wechselweise offen- und schließbar ist.6. Device according to one of claims 1 to 5, characterized in that a main flow shut-off valve (11) is provided, which in the flow direction behind the by-pass inlet (14) and before the by-pass outlet (15) in the flow direction (3) is interposed and that the main flow shut-off valve (11) with at least one bypass inlet (14) and / or the by-pass outlet (15) interposed bypass shut-off valve (12) alternately can be opened and closed.
7. Vorrichtung nach einem der Ansprüche 1 bis 6 , dadurch gekennzeichnet, daß die Sperrventile (11, 12) als Ventilschieber ausgebildet sind, die vorzugsweise mechanisch miteinander zwangsgesteuert sind.7. Device according to one of claims 1 to 6, characterized in that the check valves (11, 12) are designed as valve spools, which are preferably mechanically positively controlled with each other.
8. Vorrichtung nach einem der Ansprüche 1 bis 7 , dadurch gekennzeichnet, daß die Sperrventile (11, 12) zum Ansteuern in Abhängigkeit von den in das Befeuchter- und/oder Vorrichtungsgehäuse (8) eingesetzten oder daraus entnommenen Flüssigkeitsbehälter (9) mit diesem in Steuerverbindung stehen und daß die Sperrventile (11, 12) dazu vorzugsweise mit zumindest einem vom Flüssigkeitsbehälter (9) beaufschlagbaren Taster (18) antriebsgekoppelt sind. 8. Device according to one of claims 1 to 7, characterized in that the check valves (11, 12) for actuation in dependence on the in the humidifier and / or device housing (8) inserted or removed liquid container (9) with this in Control connection and that the check valves (11, 12) are preferably drive-coupled to at least one button (18) which can be acted upon by the liquid container (9).
9. Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß beim Einsetzen des Flüssigkeitsbehälters (9) in das Befeuchter- und/oder Vorrichtungsgehäuse (8) das Hauptstrom-Sperrventil (11) gegen eine Rückstellkraft in seine Schließstellung und das (die) Nebenstrom- Sperrventil (e) (12) gegen eine Rückstellkraft in seine (ihre) Offenstellung bewegbar sind.9. Device according to one of claims 1 to 8, characterized in that when inserting the liquid container (9) in the humidifier and / or device housing (8), the main flow check valve (11) against a restoring force in its closed position and (the ) Bypass check valve (s) (12) can be moved into its (their) open position against a restoring force.
10. Vorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß das Hauptstrom-Sperrventil (11) quer zur Hauptstromrichtung und etwa parallel zur Einschieberichtung des Flüssigkeitsbehälters (9) im Vorrichtungsgehäuse (8) verschieblich geführt ist und daß der Ventilschieber des Hauptstrom-Sperrventiles (11) gegen eine Rückstellkraft in Einschieberichtung des Flussigkeitsbehälters (9) verschieblich ist und mit dem Flüssigkeitsbehälter (9) in Antriebsverbindung steht.10. Device according to one of claims 1 to 9, characterized in that the main flow shut-off valve (11) is guided transversely to the main flow direction and approximately parallel to the direction of insertion of the liquid container (9) in the device housing (8) and that the valve slide of the main flow Lock valve (11) against a restoring force in the direction of insertion of the liquid container (9) is displaceable and is in drive connection with the liquid container (9).
11. Vorrichtung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß dem By-pass-Eintritt (14) und dem By- pass-Austritt (15) ein gemeinsamer Ventilschieber (13) zugeordnet ist, der vorzugsweise mit dem Hauptstrom- Sperrventil (11) in Antriebsverbindung steht.11. Device according to one of claims 1 to 10, characterized in that the by-pass inlet (14) and the by-pass outlet (15) is assigned a common valve spool (13), which is preferably with the main flow shut-off valve (11) is in drive connection.
12. Vorrichtung nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß am Hauptstrom-Sperrventil (11) eine Auflaufschräge (16) zum Betätigen des (der) Nebenstrom- Sperrventile (s) (12) mittels einer abgeleiteten Querbewegung vorgesehen ist und daß dazu die Auflaufschräge (16) mit einer Betätigungs-Stirnfläche (17) des quer zur Bewegungsrichtung des Hauptstrom-Sperrventiles (11) verschieblich geführten Ventilschiebers (13) des Nebenstrom-Sperrventiles (12) zusammenwirkt. 12. The device according to one of claims 1 to 11, characterized in that on the main flow shut-off valve (11) a run-up slope (16) for actuating the (the) bypass shut-off valve (s) (12) is provided by means of a derived transverse movement and that For this purpose, the run-up slope (16) interacts with an actuating end face (17) of the valve slide (13) of the secondary flow shut-off valve (12), which is displaceable transversely to the direction of movement of the main flow shut-off valve (11).
13. Vorrichtung nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß der Gasbefeuchter (5) zur Dampf- erzeugung eine im Bereich des Flüssigkeitsbehälters (9) angeordnete Heizeinrichtung hat, die mit einem federbelasteten elektrischen Schalttaster (25) elektrisch verbunden ist, welcher Schalttaster (25) vom Flüssigkeitsbehälter (9) in dessen ins Behälter- und/oder Vorrichtungsgehäuse (8) eingesetzter Gebrauchsstellung beaufschlagt ist und sich in seiner Betätigungsstellung befindet.13. Device according to one of claims 1 to 12, characterized in that the gas humidifier (5) for generating steam has in the region of the liquid container (9) arranged heating device which is electrically connected to a spring-loaded electrical switch button (25), which Switch button (25) is acted upon by the liquid container (9) in its use position inserted into the container and / or device housing (8) and is in its actuating position.
14. Vorrichtung nach einem der Ansprüche 1 bis 13 , dadurch gekennzeichnet, daß der Flüssigkeitspegel im Flüssigkeitsbehälter (9) mittels eines Überlaufs begrenzt ist und daß der mit dem By-pass verbindbare Behälter-Eintritt (22) und Behälter-Austritt (23) vorzugsweise mit Abstand oberhalb des maximalen Flüssigkeitspegels angeordnet sind. 14. The device according to one of claims 1 to 13, characterized in that the liquid level in the liquid container (9) is limited by means of an overflow and that the by-pass connectable container inlet (22) and container outlet (23) are preferably are arranged at a distance above the maximum liquid level.
PCT/EP1997/004077 1996-07-27 1997-07-28 Gas supply device for sleep apnea WO1998004311A1 (en)

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DE19630466.0 1996-07-27

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