DE102022120585A1 - Anesthetic system and anesthetic component with an anesthetic dispenser and with a locking device - Google Patents

Abstract

The invention relates to an anesthetic system with an anesthetic component (90) and a receptacle into which the anesthetic component (90) can be inserted. The anesthetic component (90) comprises an anesthetic dispenser, an anesthetic tank for receiving anesthetic, a supply line to the anesthetic tank and a closure (7) for the supply line. The anesthetic dispenser can feed an anesthetic from the anesthetic tank into a carrier gas. A locking device with a closure locking lever (31) and a removal locking lever (32) is assigned to the anesthetic component (90). The shutter locking lever (31) in a locked position prevents the shutter (7) from being opened. In a release position, it allows the closure (7) to be opened. In a locked position, the removal locking lever (32) prevents the anesthetic component (90) from being removed from the receptacle. In a release position, it allows removal.

Description

The invention relates to an anesthetic system and an anesthetic component which are able to provide a gas mixture comprising oxygen and at least one anesthetic and are therefore designed to anesthetize a patient. Furthermore, the invention relates to a method for anesthetizing a patient using such an anesthetic system.

Anesthetic systems known from the prior art and also the anesthetic system according to the invention comprise an anesthetic dispenser which feeds the or at least one anesthetic into a flow of a carrier gas with oxygen and thereby generates the gas mixture. The anesthetic system is or can be connected to a coupling unit on the patient's side, for example to a breathing mask on the patient's face or to a tube in the patient's body. The gas mixture generated flows from the anesthesia system to the patient-side coupling unit and further into the patient's body and anesthetizes the patient.

An anesthetic tank keeps the or an anesthetic ready, the anesthetic being liquid at room temperature but usually having a low boiling point. The anesthetic dispenser is supplied with liquid anesthetic from this anesthetic tank.

From time to time it is necessary to refill anesthetic into the anesthetic tank. To enable refilling, a supply line leads into the anesthetic tank. A closure for the delivery line is movable between an open and a closed position. In the open position, the closure allows anesthetic to flow from a reservoir, such as a bottle, or from a supply port into the delivery line and on to the anesthetic tank. In the closed position, the closure closes the anesthetic tank and thereby prevents anesthetic from escaping from the anesthetic tank into the environment.

Operating the anesthesia system incorrectly can lead to the patient being anesthetized being interrupted, which can endanger the patient. Incorrect operation can also result in anesthetic escaping and getting into the vicinity of the anesthetic system, which can endanger people in the vicinity.

the inside DE 41 08 383 A1 described anesthetic vaporizer includes a dosing member 3, with which the achieved concentration of the anesthetic can be adjusted and which can shut off the anesthetic vaporizer. The anesthetic vaporizer can be filled and emptied using a filling device. Between a switch-on element 6, 10, for example a filling valve 6 or a closing slide 10, the filling device 4 and the dosing element 3, a blocking element 8 is present. This blocking element 8 is connected on the one hand to an engagement element 7 , for example to a cam disk, the engagement element 7 being actuated by the switch-on element 6 , 10 . On the other hand, the blocking member 8 is coupled to a receptacle 9 in the dosing member 3 . In an alternative, an actuation of the switch-on element 6, 10 causes the following: The locking element 8 engages in a receptacle of the dosing element 3 and thereby locks the dosing element 3. In another alternative, an actuation of the dosing element 3 causes the following: The locking element 8 is released from the receptacle 9 then moves and blocks the engaging element 7.

In U.S. 2020/0 238 043 A1 describes a mechanism for releasably attaching and locking an anesthetic evaporator to an anesthesia main machine. The mechanism comprises a securing element on a housing (main body) of the anesthetic dispenser and a corresponding element on the anesthesia machine. A stop element on the anesthesia device limits the possible movement of the safety element when it engages with the corresponding element. This mechanism can be unlocked with a handle on the housing.

The object of the invention is to provide a device for anesthetizing a patient, the device comprising an anesthetic dispenser, an anesthetic tank, a supply line to the anesthetic tank and a movable closure for the supply line, and the risk of incorrect operation being reduced in comparison to known devices for anesthetics is. Furthermore, the invention is based on the object of providing a method which anesthetizes a patient using such a device and which reduces the risk of incorrect operation.

The object is achieved by an anesthetic system having the features of claim 1, by an anesthetic component having the features of claim 16 and by a method having the features of claim 17. Advantageous configurations are specified in the dependent claims. Advantageous configurations of the anesthetic system according to the invention are, insofar as they make sense, also advantageous configurations of the invention according to the anesthetic component and the method according to the invention and vice versa.

The anesthesia system according to the invention and the anesthesia component according to the invention are designed to anesthetize a patient. The method at least temporarily anesthetizes the patient.

The anesthetic system includes at least one anesthetic component and at least one receptacle, optionally at least two anesthetic components and/or at least two receptacles. The or each receptacle is able to receive the or respectively one anesthetic component. The or each anesthetic component can be inserted into a receptacle and removed from the receptacle again. If the anesthetic system includes multiple anesthetic components and multiple receptacles, each anesthetic component can be used in one receptacle, optionally in one of multiple possible receptacles. It is possible that every anesthetic component can be used in every recording. It is also possible that at least one anesthetic component can only be used in at least one of several existing receptacles, but not in every receptacle. The last implementation provides mechanical coding for different anesthetic components and/or different connections.

The or each anesthetic component comprises an anesthetic dispenser, an anesthetic tank, a supply line and a closure for the supply line. The anesthetic tank can hold anesthetic. This anesthetic is preferably liquid at least at a temperature between 10 degrees Celsius and 25 degrees Celsius. The supply line leads to the anesthetic tank.

The anesthetic dispenser can feed at least one anesthetic from the anesthetic tank into a carrier gas, for example by evaporation or injection. The carrier gas includes oxygen, for example in the form of ambient air. By feeding in the anesthetic dispenser generates a gas mixture with oxygen and at least one anesthetic. If the anesthetic component or at least one anesthetic component is inserted into the or a receptacle, the anesthetic system is therefore able to provide a gas mixture comprising oxygen and at least one anesthetic. This gas mixture is suitable for ventilating and anesthetizing a patient.

The respective closure for the anesthetic tank of the or each anesthetic component can be moved back and forth between an open and a closed position. As a rule, anesthetic is heavier than air in both liquid and gaseous states. In the open position, the closure releases the supply line to the anesthetic tank and allows anesthetic to flow into the supply line and through the supply line into the anesthetic tank, in particular vertically or diagonally downwards into the anesthetic tank. In the closed position, the closure prevents anesthetic from escaping through the supply line from the anesthetic tank, in particular from evaporating or dripping out.

A locking device is assigned to the or at least one anesthetic component. If the anesthetic system comprises a plurality of anesthetic components, a locking device is assigned to at least one, preferably to each anesthetic component.

In one embodiment, each anesthetic component is assigned its own locking device. Preferably, at least part of the associated locking device, optionally the entire locking device except for a holding element on the receptacle, belongs to this anesthetic component.

However, the alternative configuration is also possible, namely that the locking device belongs to the anesthetic system but not to the anesthetic component. In this alternative embodiment, a locking device is preferably assigned to the or at least one receptacle, preferably each receptacle. In another implementation of the alternative embodiment, the same locking device is assigned to at least two anesthetic components or at least two receptacles, optionally all receptacles. In both configurations, the locking device is assigned to that anesthetic component that is currently inserted in the receptacle.

The or at least one, preferably each locking device comprises two locking levers, namely a closure locking lever and a removal locking lever. Each of these two locking levers can be moved back and forth between a locked position and a released position. In one embodiment, these two locking levers are mechanically coupled to one another. In another embodiment, one locking lever can be moved independently of the other locking lever of the same locking device. Each of the two locking levers can preferably be rotated about an axis of rotation. It is possible for both locking levers to be rotatable about the same axis of rotation or about two rotations that are spaced apart from one another and parallel to one another axes or about two otherwise positioned axes of rotation.

• - Wenn der Verschluss-Sperrhebel in der Arretier-Position ist, arretiert die Arretierungs-Vorrichtung den Verschluss des Narkotisierungs-Bauteils in der geschlossenen Position. Wenn der Verschluss-Sperrhebel in der Freigabe-Position ist, gibt die Arretierungs-Vorrichtung den Verschluss frei. Der Verschluss lässt sich dann aus der geschlossenen in die geöffnete Position bewegen, beispielsweise von der Zuführleitung abnehmen.
• - Wenn der Entnahme-Sperrhebel in der Arretier-Position ist, blockiert die Arretierungs-Vorrichtung eine Entnahme des Narkotisierungs-Bauteils aus der Aufnahme. Wenn der Entnahme-Sperrhebel in der Freigabe-Position ist, gibt die Arretierungs-Vorrichtung eine Entnahme des Narkotisierungs-Bauteils aus der Aufnahme frei. Das Narkotisierungs-Bauteil lässt sich dann aus der Aufnahme herausnehmen und optional später wieder in die oder eine andere Aufnahme einsetzen.

When the anesthetic component or an anesthetic component is inserted into the or a receptacle, the locking device associated with this anesthetic component performs the following:

• - When the latch locking lever is in the locked position, the locking device locks the latch of the anesthesia component in the closed position. When the latch lock lever is in the release position, the detent releases the latch. The closure can then be moved from the closed to the open position, for example removed from the supply line.
• - When the removal locking lever is in the locking position, the locking device blocks removal of the anesthetic component from the receptacle. When the removal lock lever is in the release position, the detent enables removal of the anesthetic component from the receptacle. The anesthetic component can then be removed from the receptacle and optionally reinserted into the receptacle or another receptacle later.

• - Das oder mindestens ein Narkotisierungs-Bauteil wird in die oder jeweils eine Aufnahme eingesetzt.
• - Der Verschluss des eingesetzten Narkotisierungs-Bauteils ist in der geschlossenen Position und verhindert, dass Narkosemittel aus dem Narkosemitteltank entweicht.
• - Der Narkosemitteldosierer speist in ein Trägergas mindestens ein Narkosemittel aus dem Narkosemitteltank ein, optional mehrere Narkosemittel.
• - Ein Gasgemisch zur Narkotisierung des Patienten wird bereitgestellt. Dieses Gasgemisch umfasst Sauerstoff und mindestens ein eingespeistes Narkosem ittel.

A patient is anesthetized at least temporarily by the method according to the invention. The method is carried out using at least one anesthetic component according to the invention, at least one receptacle and at least one locking device and comprises the following steps:

• - The or at least one anesthetic component is used in the or each recording.
• - The closure of the inserted anesthetic component is in the closed position and prevents anesthetic from escaping from the anesthetic tank.
• - The anesthetic dispenser feeds at least one anesthetic from the anesthetic tank into a carrier gas, optionally several anesthetics.
• - A gas mixture is provided to anesthetize the patient. This gas mixture includes oxygen and at least one fed-in anesthetic medium.

• - Die Arretierungs-Vorrichtung bewegt den Entnahme-Sperrhebel in eine Arretier-Position. Nunmehr blockiert die zugeordnete Arretierungs-Vorrichtung eine Entnahme des Narkotisierungs-Bauteils aus der Aufnahme.
• - Die Arretierungs-Vorrichtung bewegt den Verschluss-Sperrhebel in eine Arretier-Position. Nunmehr arretiert die zugeordnete Arretierungs-Vorrichtung den Verschluss in der geschlossenen Position.

The or at least one locking device is assigned to the anesthetic component used. Using the locking device associated with the anesthetic component, the following additional steps are performed when the anesthetic component is inserted into the receptacle, these steps being performed simultaneously, overlapping in time, or sequentially:

• - The locking device moves the removal locking lever into a locking position. The associated locking device now blocks removal of the anesthetic component from the receptacle.
• - The detent mechanism moves the bolt locking lever to a detent position. The associated locking device now locks the closure in the closed position.

• - Der Entnahme-Sperrhebel der zugeordneten Arretierungs-Vorrichtung wird in eine Freigabe-Position bewegt. Das Narkotisierungs-Bauteil wird aus der Aufnahme genommen oder lässt sich entnehmen.
• - Der Verschluss-Sperrhebel der zugeordneten Arretierungs-Vorrichtung wird in eine Freigabe-Position bewegt. Der nicht mehr arretierte Verschluss wird in eine geöffnete Position bewegt, beispielsweise von einem Benutzer. Nunmehr ist die Zuführleitung freigegeben. Bevorzugt wird der Verschluss geöffnet, beispielsweise von der Zuführleitung abgenommen, und Narkosemittel wird durch den geöffneten Verschluss hindurch in den Narkosemitteltank nachgefüllt.

Later, at least one of the following additional steps is performed:

• - The withdrawal locking lever of the associated locking device is moved to a release position. The anesthetic component is removed from the receptacle or can be removed.
• - The latch locking lever of the associated locking device is moved to a release position. The unlocked closure is moved to an open position, for example by a user. The supply line is now released. The closure is preferably opened, for example removed from the supply line, and anesthetic is refilled through the opened closure into the anesthetic tank.

• - Der Verschluss des oder eines aktuell verwendeten Narkotisierungs-Bauteil wird geöffnet, z.B. um Narkosemittel nachzufüllen, und der Druck im Narkosemitteltank sinkt, oft schlagartig.
• - Das oder ein Narkotisierungs-Bauteil wird aus der Aufnahme genommen, während dieses Narkotisierungs-Bauteil ein narkotisierendes Gasgemisch bereitstellt.

In particular, the invention reduces the risk of the following two operating errors that can occur while a patient is or is being anesthetized and is to be supplied with a gas mixture comprising oxygen and an anesthetic:

• - The closure of the anesthetic component currently being used is opened, for example to refill anesthetic, and the pressure in the anesthetic tank drops, often suddenly.
• - The or an anesthetic component is removed from the receptacle while this anesthetic component provides an anesthetic gas mixture.

Supplying the patient with the gas mixture can be interrupted by either of these two operating errors. This can lead to the anesthesia of the patient being interrupted. In addition, anesthetic can leak into the environment if the closure is opened while there is significant overpressure in the anesthetic tank. This allows a people in the vicinity of the anesthetic component may be endangered.

According to the invention, the or each locking device comprises a closure locking lever and a removal locking lever and is associated with an anesthetic component, this anesthetic component being inserted into a receptacle or being insertable into a receptacle. The shutter locking lever is reciprocable between a locked position and a released position. In the detent position, the latch locking lever prevents the latch of the anesthetic assembly from being moved from the closed position. The removal locking lever in the locked position prevents the anesthetic component inserted in the socket from being removed from the socket. In the release position, the latch locking lever allows the latch of the associated anesthetic component to be moved to the open position. The removal lock lever in the release position allows the associated anesthetic component to be removed from the receptacle.

Thanks to the locking device with the two locking levers, many undesirable situations can be avoided when operating the anesthetic system according to the invention and when carrying out the method according to the invention. In particular, the risk is reduced that the closure for the anesthetic tank is accidentally opened or the anesthetic component is accidentally removed from the receptacle. In particular, when an anesthesia component that has just been used is removed from the or a receptacle, the anesthesia of a patient can be interrupted, which endangers or at least burdens the patient. If the closure or a closure is opened, gaseous anesthetic can escape into the vicinity of the anesthetic system and endanger people there. In addition, opening the closure can also jeopardize the anesthetic, particularly when there is an overpressure in the anesthetic tank during the anesthetic, which pressure drops rapidly when the closure is open, as a result of which less anesthetic is conveyed to the anesthetic evaporator.

Thanks to the invention, the two undesired situations just described, namely that the closure is moved or the anesthetic component is removed, are prevented in a mechanical manner as long as both locking levers are in the locking position. Both of these situations are prevented regardless of a user's behavior and preferably regardless of the presence of electrical power. In particular, it is possible, but not required, to issue an alarm in a form perceivable by a human. There is a risk that such an alarm will go unnoticed or not be issued due to a technical error.

Thanks to the locking device according to the invention with the two locking levers, it is not necessary to provide two separate locking units, namely a locking unit that is only able to lock the closure and a further locking unit that only blocks the removal of the anesthetic component from the receptacle. Because only one locking device with the two locking levers is required according to the invention, the locking device according to the invention can in many cases be designed mechanically more simply than two separate locking units. In addition, less space is required in many cases.

In one embodiment, the two locking levers of a locking device are firmly mechanically connected to one another or mechanically coupled to one another in some other way in such a way that one locking lever cannot move relative to the other locking lever of the same locking device, but only both locking levers together. In one embodiment, the two locking levers together form an overall locking lever. This overall locking lever can be rotated or linearly displaced between the two positions about an axis of rotation. In one embodiment, the axis of rotation divides the overall locking lever into two levers. One lever is preferably the closure locking lever and the other lever is the removal locking lever. Another embodiment is also possible, in which the axis of rotation of the overall locking lever is positioned in such a way that both locking levers are on the same side of the axis of rotation.

The overall locking lever is moveable between a locked position and a released position. When the overall locking lever is in the locking position, both the closure for the supply line and removal of the associated anesthetic component from the receptacle are blocked. When the overall locking lever is in the release position, the breech can be moved and the associated anesthetic component removed from the receptacle.

In many cases, the design with the overall locking lever leads to a simpler mechanical design. A movement of the overall locking lever transfers both individual locking levers from one position to the other position. It is sufficient that an optional control ble actuator is connected to a locking lever. The actuator can move the overall locking lever. Accordingly, it is sufficient for a user to grip and move a locking lever or an actuating element connected to the locking lever in order to manually move the overall locking lever and thus both locking levers. Two individual actuators or two individual actuating elements for the two locking levers are not required.

In another embodiment, the two locking levers of a locking device can be moved independently of one another. Each locking lever is preferably rotatable about a respective axis of rotation, with a distance preferably occurring between the two axes of rotation and particularly preferably the two axes of rotation being parallel to one another. Because the two locking levers can be moved independently of one another, one locking lever can be in the release position and the other locking lever can be in the locked position at the same time. In a first application of this embodiment, it is then possible to open the closure for the supply line, in particular to refill anesthetic, but it is not possible to remove the anesthetic component from the receptacle. Conversely, in a second application of this embodiment, it is possible to remove the anesthetic component from the receptacle with the closure closed, for example in order to subsequently insert the anesthetic component into another receptacle. With the second use, however, it is not possible to open the closure. In this second application, therefore, a previously built-up pressure remains in the anesthetic tank. This second application can be combined with the embodiment that the locking device is a part of the anesthetic component. The anesthetic component can be transported with the lock locked. These two applications can be combined with each other.

According to the invention, the shutter locking lever in the locked position prevents the delivery tube shutter from being moved from the closed position. In a preferred embodiment, the locking locking lever can also be moved into the locking position when no closure is in place. Particularly preferably, even when the closure locking lever is in the locked position, it is possible to place the closure on the supply line and move it to the closed position. The bolt locking lever then locks the bolt in this closed position. This configuration makes it possible to insert the anesthetic component into the or a receptacle with the closure open or without the closure, the closure locking lever being in the locking position, and to lock the anesthesia component in the receptacle and later put on the closure and to move to the closed position. In particular, it is possible to insert the anesthetic component into the or a receptacle with the closure open or without a closure, to refill with anesthetic and then to close the supply line with the closure.

In one embodiment, the removal locking lever directly blocks the anesthetic component in the socket and prevents the anesthetic component from being removed from the socket.

In another embodiment, the or at least one locking device includes a movable unlocking lever in addition to the two locking levers. Each locking device preferably includes a movable unlocking lever in addition to the two locking levers. In a locked position, the unlocking lever blocks the process of removing the associated anesthetic component from the receptacle. In an unlocked position, the unlocking lever releases the removal of the anesthetic component. It is also possible that an unlocking lever is assigned to at least two recordings.

When the removal locking lever is in the detent position, it holds the unlocking lever in the locking position, thereby preventing the unlocking lever from being moved to the release position. At least one mechanical or pneumatic spring preferably strives to hold the unlocking lever in the locking position, so that the risk of the unlocking lever being unintentionally moved into the unlocking position is reduced.

The removal blocking lever can be connected to the unlocking lever directly or via a mechanical functional chain. In one embodiment of the mechanical functional chain, the removal blocking lever locks a removal handle described in more detail below in the locking position, the unlocking lever being able to be moved into the unlocked position by means of the unlocked removal handle. The configuration that the anesthetic component is not held in the receptacle directly by the removal locking lever, but by a separate unlocking lever, leads in many cases to a more stable mechanical construction and/or to greater operational reliability. In particular, the risk is further reduced that the anesthetic component is unintentionally taken out of the receptacle or falls out of the receptacle.

In a possible further development of this embodiment, an actuator can move both the removal blocking lever into the release position and the unlocking lever into the unlocking position. A user preferably actuates this actuator, for example by means of an actuating element, and as a reaction to the actuation the actuator first moves the removal blocking lever into the release position and then or with a time overlap the unlocking lever into the unlocking position. A single user input therefore results in the anesthetic component being released. Or the actuator moves the overall locking lever described above.

In an alternative development of the embodiment, the need to provide an actuator for the unlocking lever is avoided. Rather, the locking device includes, in addition to the unlocking lever, the removal handle already mentioned, which is movably mounted, for example on a housing of a medical device, which includes the or each receptacle. A user can move the removal handle in a release direction. The user can preferably pull the removal handle towards him when moving in the release direction. The removal handle is mechanically connected to the unlocking lever, either directly or in the form of a mechanical chain of effects. When the removal handle is moved in the release direction, the unlocking lever is moved from the locked position to the unlocked position thanks to the mechanical connection or mechanical action chain.

When the unlocking lever is in the unlocked position, the anesthetic component can be moved in a removal direction, for example tilted, and then removed from the receptacle. In one implementation, the removal direction is the same as the release direction of the removal handle. In another embodiment, there is an angle between these two directions. The configuration with the two different directions offers an additional degree of freedom in the construction of the anesthetic system.

It is possible that when the unlocking lever is in the unlocked position, a mechanical or pneumatic spring pushes and/or rotates the anesthesia component in the removal direction, so that a user can grasp the displaced or rotated anesthesia component . This form of implementation can be combined with the form of implementation in which an angle occurs between the two directions.

The eject lockout lever prevents the eject handle from being accidentally or otherwise unintentionally moved in the release direction. Namely, when the removal locking lever is in the locked position, it blocks movement of the removal handle in the release direction. On the other hand, the removal lock lever in the release position releases the removal handle and allows the removal handle to be moved in the release direction. In a preferred embodiment, when the removal locking lever is in the locked position, a pawl on the removal locking lever engages a corresponding projection on the removal handle or, conversely, a pawl on the removal handle engages a corresponding projection on the removal locking lever. Preferably, movement of the removal lock lever to the release position removes the latch from the boss.

In one embodiment, a user can actuate the unlocking lever on the one hand with the aid of the removal handle and on the other hand directly and move it into the unlocked position. The process of moving the unlocking lever directly into the unlocking position can also be referred to as an emergency unlocking of the anesthetic component. With the emergency release, the associated anesthetic component can also be removed from the receptacle if the removal locking lever locks the unlocking lever directly or the removal handle connected to the unlocking lever. The unlocking lever is preferably attached in such a way that the risk of accidental actuation is low. An opening through which the unlocking lever can be moved is preferably embedded in a housing of the anesthetic component or a medical device with the receptacle.

At least one emergency opening is preferably embedded in a housing of the or at least one anesthetic tank. The or each emergency opening is spatially spaced from the supply line to the anesthetic tank. An emergency lock closes the emergency opening during regular operation. This emergency lock can only be opened using a suitable tool, so that the risk of this emergency lock being opened accidentally or without authorization is relatively low. A possible application of this emergency opening and this emergency closure is as follows: the anesthetic component was removed from the or a receptacle, with the closure for the supply line being closed and there being an overpressure in the anesthetic tank. A mechanic with the right tool opens the emergency opening in an environment in which no other people can be endangered by escaping anesthetic, thereby causing the overpressure in the anesthetic tank to drop quickly.

According to the invention, the or each anesthetic component is able to provide a gas mixture with oxygen and at least one anesthetic. In a preferred embodiment, the respective anesthetic dispenser of the anesthetic component can then feed anesthetic into a carrier gas when the anesthetic dispenser is operated in a feed state. When operating in the feed-in state, there is an overpressure in the anesthetic tank compared to the ambient pressure. In particular, this overpressure prevents a fluid from flowing back from the anesthetic dispenser into the anesthetic tank and the formation of bubbles. As long as there is a relatively high overpressure in the anesthetic tank, the closure must not be opened because otherwise anesthetic can escape into the environment. On the other hand, from time to time it is necessary to open the closure to refill anesthetic.

The anesthetic component is preferably able to automatically lower the overpressure in its anesthetic tank, specifically as a reaction to external activation. The anesthetic system detects an enabling user input and, in response to the detection, automatically triggers the anesthetic component to automatically release the overpressure. While the overpressure is being released, the bolt locking lever is still in the detent position and prevents the bolt from being moved from the closed position. After the pressure is released, the bolt locking lever is moved to the release position or released and then manually moved to the release position. The closure can now be opened. For example, it is detected that the pressure in the anesthetic tank relative to the ambient pressure has fallen below a predetermined limit or that a predetermined period of time has elapsed since the release user input was detected. After this detection, the shutter locking lever is moved or can be moved. The configuration in which an overpressure is first reduced before the closure can be opened reduces the risk of anesthetic escaping into the environment.

The step of lowering the overpressure in the anesthetic tank inevitably takes time. In this embodiment, the lock locking lever is not moved into the release position or can be moved into the release position immediately after the release user input, but only after a certain time, for example when a predetermined period of time has elapsed or a pressure sensor detects the event, that the difference between the pressure in the anesthetic tank and the ambient pressure has fallen below a predetermined limit.

• - Eine Freigabe-Benutzereingabe wurde erfasst. Der Verschluss-Sperrhebel ist in der Arretier-Position, der Überdruck wird abgesenkt, oder der Verschluss-Sperrhebel ist in einer Zwischen-Position zwischen der Arretier-Position und der Freigabe-Position. Der Verschluss für die Zuführleitung lässt sich noch nicht bewegen.
• - Der Verschluss-Sperrhebel ist in der Freigabe-Position. Der Verschluss lässt sich bewegen.
• - Der Verschluss-Sperrhebel ist in der Arretier-Position. Eine Freigabe-Benutzereingabe wurde nicht erfasst.

Often a user desires immediate response to the enable user input. The anesthetic component therefore preferably comprises a display unit. Instead, the display unit can also be assigned to a recording. This display unit shows visually or in another way that a person can perceive which of the following three situations is currently present:

• - A release user input was captured. The slide lock lever is in the locked position, the overpressure is released, or the slide lock lever is in an intermediate position between the locked position and the release position. The closure for the feed line cannot be moved yet.
• - The slide lock lever is in the release position. The clasp can be moved.
• - The bolt locking lever is in the locked position. A release user input was not captured.

It is also possible that a fourth situation is also displayed, namely that the closure is open and/or the feed line is no longer closed.

In one form of implementation, the display unit comprises at least two display elements, which are preferably spatially spaced apart from one another and can preferably be visually distinguished from one another. For example, one indicator shows whether the shutter locking lever is in the locked position or in the unlocked position. The other indicator shows, in addition to or instead of this position of the bolt lock lever, the situation that a release user input is detected and the bolt lock lever is in the locked position or in an intermediate position, but not yet in the release position. Position. It is possible that two different indicators each indicate whether the shutter locking lever is in the locked position or in the released position, thereby providing redundancy. At least one display element preferably shows the current position of the lock locking lever in a purely mechanical manner, so that a user can recognize the position of the lock locking lever even if a power supply fails.

In one embodiment, at least one controllable actuator is assigned to the or at least one locking device. The or each actuating drive can preferably be activated and deactivated again from the outside, for example by a user input or automatically by a signal-processing control unit. This control unit can be part of the anesthetic component or a medical device comprising the or each recording. The or each actuator is capable of moving a locking lever. In one implementation, the actuator is capable of moving the overall locking lever. In another embodiment, a first actuator is able to move the closure locking lever and a second actuator to move the removal locking lever. These two actuators for the two locking levers can preferably be activated and deactivated again independently of one another. In one embodiment, the or at least one actuator includes a restoring element, which holds a locking lever in the locked position, and a drive which is able to move the locking lever against the force of the restoring element.

In a further development of this embodiment, a closure sensor is assigned to the or at least one anesthetic component. This closure sensor is able to detect whether the closure of this anesthetic component is in the closed position or not. If the anesthetic system detects that the closure is not in the closed position, the anesthetic system reacts automatically as follows: A control unit automatically controls the actuator or actuators in such a way that the controlled and thereby activated actuator drives the closure locking lever for moves this anesthetic component into the locking position and/or holds it in the locking position. At the same time, a warning is preferably issued in a form that can be perceived by a human. This configuration reduces the risk of anesthetic escaping into the environment through the closure that is not completely closed. It is possible that the chain of effects just described is only triggered in certain situations, for example when the difference between the pressure in the anesthetic tank and the ambient pressure is above a predetermined limit or when the anesthetic system is currently being used to anesthetize a patient.

According to the invention, the or each anesthetic component can be inserted into the or a respective receptacle. In one embodiment, the locking device associated with this anesthetic component is designed as follows: Inserting the anesthetic component into the receptacle triggers the step in which the removal locking lever, optionally the total locking lever, automatically moves into the Locking position is transferred and held in this. For example, at least one mechanical or pneumatic spring moves the locking lever into the locked position. Or an actuator for the removal locking lever is activated automatically. The insertion of the anesthetic component preferably also triggers the step in which the closure locking lever is also transferred to the locking position, even if the two locking levers can be moved independently of one another.

In one embodiment, the anesthetic dispenser of an anesthetic component can be operated either in a feed state and in at least one other state. In the feed state, the anesthetic dispenser can feed anesthetic into a carrier gas. If the anesthetic dispenser is operated in the feeding state, according to one embodiment, a control unit of the anesthetic system controls the or an actuator in such a way that the controlled and thereby activated actuator moves the removal locking lever into the locking position and/or in the lock position. This refinement reduces the risk of the anesthetic component being removed from the receptacle while a patient is or is being anesthetized. This control unit can belong to the anesthetic component or to a medical device that includes the or each receptacle.

According to the invention, the anesthetic component or components can be inserted into the or a receptacle of the anesthetic system and removed from the receptacle again. In many cases, the step of inserting the anesthetic component into the receptacle triggers the step in which the anesthetic dispenser of this anesthetic component initializes itself and, in particular, carries out a self-test and optionally a calibration. The anesthetic dispenser is in an initialization state during this step. The actuator preferably moves the removal locking lever into the locking position and/or holds it in the locking position when the anesthetic dispenser is in the initialization state. In one embodiment, the process is automatically detected that the anesthetic component has been inserted into the receptacle. This detection triggers the step of the or an actuator moving the removal locking lever to and/or holding it in the locked position. This refinement reduces the risk of the anesthetic component being removed from the receptacle again while the anesthetic dispenser is in the initialization state. More preferably, in response to the deployment, the latch locking lever is also moved to the detent position.

The anesthetic system preferably comprises at least two anesthetic components and at least two receptacles for these anesthetic components. The two anesthetic components can provide two gas mixtures with different anesthetics, so that a patient is anesthetized with two different anesthetics can be. Alternatively, the two anesthetic components can provide two gas mixtures in which the concentration of the anesthetic in one gas mixture differs from the concentration in the other gas mixture. In addition, redundancy is provided in many cases by the two receptacles and the two anesthetic components.

In one embodiment, each anesthetic component is assigned a locking device, so that the anesthetic system comprises at least two locking devices, namely one locking device per anesthetic component. The two locking levers and the or each actuator of this locking device preferably belong to the associated anesthetic component. Or a locking device is assigned to each receptacle for an anesthetic component. In this configuration, a closure can be locked and at the same time another closure can be released. It is also possible that one anesthetic component is blocked in one receptacle and the other anesthetic component can be removed from the other receptacle.

In another embodiment, the same locking device is assigned to two different anesthetic components and preferably includes two closure locking levers and two removal locking levers. In some cases, the same actuator can then simultaneously move two locking locking levers and/or two removal locking levers, so that fewer actuators are required.

According to the invention, the anesthetic system comprises at least one anesthetic component, to which a locking device is assigned. The anesthetic system preferably also includes a medical device that includes the or each receptacle into which the anesthetic component or an anesthetic component can be inserted. If the anesthetic component or an anesthetic component is inserted into this receptacle, this medical device is able to supply a patient with a gas mixture comprising oxygen and at least one anesthetic. The or at least one used anesthetic component provides this gas mixture. The medical device preferably supplies the used anesthetic component with electrical energy, so that the anesthetic component does not require its own power supply unit. In addition, a data connection is preferably established between the medical device and the anesthetic component used, so that the anesthetic component does not need to have its own display and operating unit. The medical device is at least temporarily in fluid communication with a patient-side coupling unit, for example with a breathing mask on the patient's face or a tube in the patient's body. It is also possible for the anesthetic component to have its own power supply unit, so that the medical device does not necessarily have to supply the anesthetic component with electrical energy.

In one embodiment, the or at least one locking device of the anesthetic system is a component of the or a respective anesthetic component, optionally with the exception of a holding element that is arranged outside of the anesthetic component. The anesthetic component thus includes the closure locking lever and the removal locking lever, optionally at least one actuator for these two locking levers, optionally also the unlocking lever and the removal handle. If the anesthetic system comprises a plurality of anesthetic components, then each anesthetic component preferably comprises a locking device.

The configuration that the locking device belongs to the anesthetic component makes it easier in many cases to convert an existing anesthetic system into an anesthetic system according to the invention. Essentially, only the or each anesthetic component needs to be changed, in particular one locking device for each anesthetic component needs to be added. The rest of the anesthetic system needs relatively little modification. For example, a holding element must be added to the mount.

A preferred form of realization of the embodiment in which the unlocking lever is a component of the anesthetic component is described below. Then, when the unlocking lever is in the locking position, a corresponding projection on the socket in which the anesthetic component is inserted engages a recess of the unlocking lever. Or a projection of the unlocking lever engages in a recess on the mount. An existing medical device can be adapted relatively easily to the invention: In this embodiment, a holding element is to be added to the medical device in particular, which corresponds to the optional unlocking lever in the locking position, i.e. the projection or recess on the receptacle .

In another embodiment, the locking device, which is assigned to the anesthetic component or components, is not a part of the anesthetic component, but a component of the medical device, which further comprises the or at least one receptacle for the or an anesthetic component. The locking device is then preferably assigned to the or at least one receptacle for an anesthetic component. This configuration makes it possible to use a smaller and/or lighter anesthetic component.

If the medical device comprises a number of receptacles, then in one embodiment one locking device is assigned to each receptacle, so that the device has as many locking devices as receptacles. In another embodiment, the same locking device is assigned to at least two receptacles. In this other configuration, the same removal locking lever is able to block two anesthetic components in their respective receptacles at the same time. Or the locking device comprises two removal locking levers that are mechanically connected to one another. The lock locking lever is able to lock the locks of two anesthetic components at the same time. Or the locking device comprises two locking levers that are mechanically connected to one another.

The medical device with the receptacle and the associated locking device is, for example, a ventilator which is designed to carry out a sequence of ventilation strokes and to supply the gas mixture to the patient during at least some of these ventilation strokes. More specifically, the ventilator delivers the gas mixture to a patient-side interface, and the patient-side interface is connected or connectable to the patient. The patient can be completely anesthetized. In another embodiment, the patient breathes in the gas mixture with his own respiratory muscles, and the anesthetic system provides this gas mixture.

• 1 schematisch ein Narkotisierungs-System, welches einen Patienten mit einem Gasgemisch umfassend ein Narkosemittel versorgt und ihn dadurch narkotisiert;
• 2 schematisch ein beispielhaftes Beatmungsgerät mit zwei eingesetzten Narkotisierungs-Bauteilen;
• 3 in einer perspektivischen Darstellung eine Ausschnittsvergrößerung aus 2, welche die beiden eingesetzten Narkotisierungs-Bauteile zeigt;
• 4 eine beispielhafte Verriegelung für eine arretierte Verschlusskappe für den Narkosemitteltank eines Narkotisierungs-Bauteils;
• 5 die erste Ausführungsform der Arretierungs-Vorrichtung mit dem Gesamt-Sperrhebel in der Arretier-Position (links) und in der Freigabe-Position (rechts);
• 6 in eine Ausschnittsvergrößerung von 5 den Entnahme-Sperrhebel in der Freigabe-Position;
• 7 die zweite Ausführungsform der Arretierungs-Vorrichtung mit zwei unabhängig voneinander drehbaren Sperrhebeln, die beide in der Arretier-Position (links) und beide in der Freigabe-Position (rechts) sind;
• 8 in eine Ausschnittsvergrößerung von 7 den Entnahme-Sperrhebel in der Freigabe-Position;
• 9 einen Vergleich zwischen der normalen Entriegelung (links) und der Not-Entriegelung (rechts) für das Narkotisierungs-Bauteil;
• 10 mehrere Anzeigeelemente, die einen Benutzer über die jeweilige aktuelle Position der beiden Sperrhebel informieren.

The invention is described below using an exemplary embodiment. Here shows

• 1 schematically shows an anesthetic system which supplies a patient with a gas mixture comprising an anesthetic and thereby anesthetizes him;
• 2 schematically an exemplary ventilator with two used anesthetic components;
• 3 an enlargement of a detail in a perspective view 2 , which shows the two anesthetic components used;
• 4 an exemplary latch for a locked cap for the anesthetic tank of an anesthetic component;
• 5 the first embodiment of the locking device with the total locking lever in the locked position (left) and in the released position (right);
• 6 in an enlargement of 5 the removal lock lever in the release position;
• 7 the second embodiment of the locking device with two independently rotatable locking levers, both in the locking position (left) and both in the release position (right);
• 8th in an enlargement of 7 the removal lock lever in the release position;
• 9 a comparison between normal unlocking (left) and emergency unlocking (right) for the anesthetic component;
• 10 several display elements that inform a user about the respective current position of the two locking levers.

1 shows schematically a preferred application of the invention. A patient P is connected to a patient-side coupling unit 2, for example a breathing mask or a tube. The patient P is supplied with a gas mixture, which includes oxygen and at least one anesthetic, via the patient-side coupling unit 2 . Because of the gas mixture, the patient P is anesthetized or at least sedated.

In the example of 1 a ventilation circuit is established between the patient P and a ventilator 1 . The ventilator 1 executes a sequence of ventilation strokes. With each ventilation stroke, a quantity of the gas mixture is conveyed from the ventilator 1 to the coupling unit 2 on the patient side and reaches the patient P. The patient P is therefore artificially ventilated. The air exhaled by the patient P flows back to the ventilator 1. Because a closed circuit is established, no anesthetic escapes into the environment.

It is also possible that the patient P sucks in the gas mixture due to his own respiratory activity. The patient P's own respiratory activity is carried out by the respiratory muscles and can be spontaneous breathing and/or externally stimulated. In this alternative embodiment, no ventilator 1 is required. The patient P is preferably supplied with the gas mixture from a buffer store, for example a manual resuscitation bag and sucks in the gas mixture.

The gas mixture is provided by a supply arrangement 100 . This supply arrangement 100 is connected to the ventilator 1 (configuration according to 1 ) or connected directly or via a buffer memory (not shown) to the coupling unit 2 on the patient side (patient P sucks in the gas mixture himself). The supply arrangement 100 and the ventilator 1 belong to the anesthesia system 200 of the exemplary embodiment.

The supply arrangement 100 comprises an anesthetic dispenser 3. The anesthetic dispenser 3 comprises a mixing tank 9 and a heater 4. A stream of a carrier gas flows through the mixing tank 9, and the anesthetic dispenser 3 feeds an anesthetic into the stream of carrier gas in the mixing tank 9. The heater 4 heats the mixture in the mixing tank 9 and thereby generates a gas mixture.

Liquid anesthetic flows from an anesthetic tank 5 to the anesthetic dispenser 3. An overpressure is generated in the anesthetic tank 5. In the exemplary embodiment, a compressed air supply connection 11 in a wall W provides compressed air or another gas under overpressure. The overpressure in the anesthetic tank 5 forces liquid anesthetic into the mixing chamber 9 of the anesthetic dispenser 3. A fluid is prevented from flowing back from the mixing tank 9 in the direction of the anesthetic tank 5.

In the exemplary embodiment, a carrier gas mixer 6 mixes the carrier gas from a number of components, for example breathing air, oxygen (O ₂ ) and nitrous oxide (N ₂ O). Stationary supply connections 12 in a wall W provide these carrier gas components. An optional concentration sensor 13 measures a measure of the concentration of the or an anesthetic in the gas mixture which the anesthetic dispenser 3 generates.

Liquid anesthetic must be refilled into the anesthetic tank 5 from time to time. An anesthetic supply line 10 leads into the anesthetic tank 5 . This anesthetic supply line 10 can be closed by a closure 7 . The closure 7 can be screwed onto the supply line 10 and unscrewed again. The screwed cap 7 on the anesthetic supply line 10 prevents anesthetic from escaping from the anesthetic tank 5 into the environment. When the closure 7 is unscrewed and removed, liquid anesthetic can be refilled from a refill container 8, for example from a bottle.

In 1 the supply arrangement 100 is shown schematically. In a preferred embodiment, the anesthetic dispenser 3, the anesthetic tank 5, the optional concentration sensor 13 and the associated lines form a single component. This component is referred to below as “anesthetization component 90”. According to the preferred embodiment, the anesthetic component 90 can be inserted into a corresponding receptacle of the ventilator 1 and is then in fluid communication with the ventilator 1 and is able to provide the gas mixture. The anesthetic component 90 can also be pulled out of the receptacle again. Optionally, the carrier gas mixer 6 is also part of this anesthetic component 90.

2 shows schematically a respirator 1 known from the prior art, which comprises a housing 62, an inwardly pointing bulge 61 in the housing 62, a display and control unit 52 and a chassis 53. The display and control unit 52 is rotatably mounted on an arm 64, the arm 64 being fixed to the housing 62. Vital parameters of the patient P and optionally status parameters of the ventilator 1 are displayed on the display and operating unit 52 . A touch screen allows a user to make inputs

In the bulge 61 there are two receptacles 60 and 60.1 spaced apart from one another, each for an anesthetic component. Each receptacle 60, 60.1 is assigned an engagement area 63, 63.1, into which a user can reach in order to insert and remove an anesthetic component, cf. 3 . In the shot 60 is in 2 an anesthetic component 90 is inserted, and another anesthetic component 90.1 is inserted into the receptacle 60.1. The two anesthetic components 90 and 90.1 can provide two different gas mixtures, also with two different anesthetics and/or different anesthetic concentrations, or the same gas mixture.

3 shows in a detail enlargement of 2 the two used anesthetic components 90 and 90.1. Each anesthetic component 90, 90.1 comprises an anesthetic dispenser 3, 3.1, an anesthetic tank 5, 5.1, a supply line 10, 10.1 and a closure 7, 7.1. Both the anesthetic component 90 and the anesthetic component 90.1 can preferably be inserted into the receptacle 60 or the receptacle 60.1—of course only if this receptacle 60, 60.1 is not yet occupied.

An anesthetic component 90, 90.1 is supplied with electrical energy by the ventilator 1 and is able to provide a gas mixture when the anesthetic component 90, 90.1 is inserted into a receptacle 60, 60.1. A data connection is also established between an anesthetic component 90, 90.1 that is used and the ventilator 1. States of the anesthetic component can therefore be displayed on the display and control unit 52. Conversely, in one embodiment, a user can make user inputs on the display and operating unit 52, which affect the anesthetic component 90, 90.1 used.

At the in 3 In the example shown, the two anesthetic components 90 and 90.1 differ from one another. They provide gas mixtures with two different anesthetics. The anesthetic tank 5 is smaller than the anesthetic tank 5.1. The process of screwing the closure 7 onto the anesthetic supply line 10 and later unscrewing it again corresponds approximately to the process of screwing a closure cap onto a supply line to a fuel tank of an internal combustion engine and later unscrewing it again. The closure 7 is held in the feed line 10 by means of a bayonet coupling. The closure 7.1, on the other hand, is placed on the supply line 10.1 by a linear movement and held by a snap closure. The different supply lines 10, 10.1 are adapted to different refill containers 8 for the various anesthetics. The mechanical coding provided in this way reduces the risk of providing a gas mixture with an incorrect anesthetic for the current treatment. Each closure 7, 7.1 is adapted to the respective feed line 10, 10.1.

After an anesthetic component 90, 90.1 has been inserted into a receptacle 60, 60.1, it is held by a snap-on mount. An unlocking button 45 or 45.1 is assigned to each of the two receptacles 60 and 60.1. If an anesthetic component 90 is inserted into receptacle 60 and a user presses the associated release button 45, the snap mount will move immediately and the user may then remove the anesthetic component 90 from receptacle 60. The same applies to the anesthetic component 90.1.

In a preferred embodiment, which is also 2 and 3 is shown, the ventilator 1 comprises at least two receptacles 60, 60.1 for two anesthetic components 90, 90.1, the two anesthetic components 90, 90.1 each comprising an anesthetic dispenser 3, 3.1 and an anesthetic tank 5, 5.1. On the one hand, this configuration provides redundancy in the event that an anesthetic dispenser 3, 3.1 or a receptacle 60, 60.1 fails or an anesthetic tank 5, 5.1 is empty. As a rule, when only one anesthetic is used during the anesthetic, one anesthetic component 90, 90.1 is active and makes a gas mixture available, and the other is in reserve (“hot standby”). It is possible to use the same anesthetic system 200 in succession for two different anesthetics with two different anesthetics without having to replace an anesthetic component 90, 90.1 in between.

There is a risk that the currently active anesthetic component 90, 90.1 will be accidentally removed. The invention reduces this risk, which will be described below

On the other hand, the design with two receptacles 60, 60.1 makes it easier to supply the patient P with a gas mixture that includes two different anesthetics. In this application, both of the anesthetic components 90, 90.1 used are active. In one embodiment, the anesthetic component 90 provides a gas mixture with a sevoflurane, and the anesthetic component 90.1 provides a gas mixture with a desflurane. It is possible for the same carrier gas mixer 6 to supply both anesthetic components 90, 90.1 used with the carrier gas.

The configuration according to the invention, which is described below with reference to 4 ff. Is described, can be used in a ventilator 1, which is as with reference to 2 and 3 described is designed. The same reference symbols have the same meaning. Differences become clear in the following description. The configuration according to the invention can also be used for an anesthetic system 200 with only one receptacle 60 and one anesthetic component 90 .

5 until 9 show the anesthetic component 90, which is inserted into a receptacle 60, 60.1, from a lateral viewing direction. The lateral viewing direction of 5 until 9 lies in the drawing plane of 2 .

A component sensor 37 is assigned to the or each receptacle 60, 60.1 of the ventilator 1. This component sensor 37 is shown schematically in 5 and 7 shown and automatically detects whether an anesthetic component 90, 90.1 is inserted into the receptacle 60, 60.1 or not. The component sensor 37 can also be seated in the receptacle 60, 60.1. For example, the used anesthetic component 90, 90.1 interrupts a light barrier or actuates a contact switch. In In one embodiment, the component sensor 37 detects the beginning of the process, that the anesthetic component 90, 90.1 is removed from the receptacle 60, 60.1.

In one embodiment, each receptacle 60, 60.1 is assigned a display area on a display unit of the ventilator 1, for example on the display and operating unit 52. This display surface shows whether an anesthetic component 90, 90.1 has been inserted into the receptacle 60, 60.1 is or not. What is displayed on this display area depends on a signal from the component sensor 37, which is assigned to the receptacle 60, 60.1.

After an anesthetic component 90, 90.1 has been inserted into a suitable receptacle 60, 60.1 of the ventilator 1, the anesthetic component 90 automatically carries out a self-test. If the self-test is positive, the anesthetic component 90, 90.1 is activated. This process takes a few minutes. The aim is to prevent the anesthetic component 90, 90.1 from being removed from the receptacle 60, 60.1 during the self-test or during operation, ie while the patient P is or is being anesthetized. Removal during the self-test interrupts the self-test and is undesirable. A removal during ongoing operation could interrupt the anesthesia of the patient P, which could endanger the patient P or at least burden him.

In the exemplary embodiment, each anesthetic component 90, 90.1 includes a locking device. The locking device, which belongs to the anesthetic component 90 except for a holding element, is described below with reference to FIG 4 until 10 described.

4 shows a perspective representation from a viewing direction obliquely from above of an anesthetic component 90. The closure 7 is placed and points towards the viewer. In the representation of 4 a part of the housing of the anesthetic component 90 is cut open. A holding device 15, shown hatched and only partially visible, of the anesthetic component 90 holds the supply line 10, a receptacle for the closure 7 and a bearing 22 described below.

4 shows an example of how the closure 7 is locked. The lock prevents the closure 7 from being opened. As already mentioned, there is an overpressure in the anesthetic tank 5 while the patient P is supplied with the gas mixture comprising anesthetic from the anesthetic tank 5 . If the closure 7 were to be opened while the patient P is being supplied with the gas mixture, the overpressure in the anesthetic tank 5 would suddenly drop, anesthetic would escape into the environment and the anesthesia of the patient P could be interrupted. This event must be prevented. Rather, the overpressure in the anesthetic tank 5 must be reduced before the closure 7 can be opened.

In one embodiment, a discharge line (not shown) leads from the anesthetic tank 5 to a receptacle for anesthetic (also not shown). In order to relieve pressure, a previously fully closed valve on this discharge line is opened, gaseous or liquid anesthetic flows from the anesthetic tank 5 to the receptacle, and the pressure in the anesthetic tank 5 drops. This configuration prevents anesthetic from escaping into the environment.

In the exemplary embodiment, the closure 7 has the form of a cap which can be screwed onto a corresponding receptacle of the anesthetic supply line 10 in order to close the anesthetic supply line 10 . In the example of 4 the cap 7 can be rotated clockwise about its central axis D to close the anesthetic supply line 10 and unscrewed counterclockwise.

In the exemplary embodiment, the cap 7 has at least two laterally projecting wing elements 20.1, 20.2, which are firmly connected to the rest of the cap 7. It is possible that the cap 7 comprises only one wing element or more than two wing elements. The central axis D of the cap 7 is located between these two wing elements 20.1, 20.2 and acts as the central axis of the cap 7. When the cap 7 is placed on the anesthetic supply line 10, a wing element is located above a snap lever 21, the wing element in the example shown 20.1. The snap lever 21 has a sloping and upward-pointing plane and is rotatable about a horizontal axis which is perpendicular to the axis of rotation D of the cap 7 . Optionally, a mechanical or pneumatic spring strives to push the snap lever 21 upwards in the direction of the wing elements 20.1, 20.2.

When the cap 7 is put on, the snap lever 21 is pushed down. When the cap 7 is turned, a wing element 20.1 slides over the plane of the snap lever 21 pointing obliquely upwards. As soon as the rear end edge of the wing element 20.1 has slid over this inclined plane, the snap lever 21 snaps upwards. The snap lever 21 is now in a locked position and prevented in this locked position that the cap 7 is opened again. In one embodiment, the snap lever 21 snapped upwards is locked. In one embodiment, the spring holds the snap lever 21 in the locked position.

As already mentioned, it is necessary from time to time to refill the anesthetic tank 5 with liquid anesthetic. In order to be able to refill anesthetic, the cap 7 must first be unscrewed from the anesthetic supply line 10 . This requires the snap lever 21 to be pushed down or moved linearly away from the cap 7 and wing member 20.1, 20.2. In the first embodiment, in which the snap lever 21 is locked in the locking position, the snap lever 21 must be moved linearly away from the cap 7 in order to then be able to rotate the cap 7 . In the second embodiment, the snap lever 21 must be pushed down in order to then be able to turn the cap 7 . In the example of 4 In both embodiments, the cap 7 can then be rotated counterclockwise about the axis of rotation D and then removed from the anesthetic supply line 10 . The overpressure in the anesthetic tank 5 must first have been released or at least significantly reduced.

A closure sensor 36 shown schematically detects whether the closure cap 7 is in a position in which it completely closes the anesthetic supply line 10 or not, cf. 4 and 5 and 7 . In one embodiment, the closure sensor 36 detects the beginning of the process of moving the closure cap 7 out of the fully closed position. The closure sensor 36 includes, for example, a contact switch, a Hall sensor with magnets in the wing elements 20.1, 20.2 and/or a light barrier. In one embodiment, the closure sensor 36 detects whether the snap lever 21 is raised or pressed down.

The snap lever 21 is non-rotatably connected to a sleeve 27 . The sleeve 27 surrounds a shaft 23. The shaft 23 is rotatably mounted in the bearing 22 on the holding device 15. The sleeve 27 and thus the snap lever 21 are non-rotatably connected to a shaft 23 in the second embodiment. At that end of the shaft 23 which is opposite the bearing 22, an actuating button 26 is placed. In 3 a corresponding actuating button 26.1 of the anesthetic component 90.1 is shown.

A compression spring 25 tends to move the shaft 23 away from the bearing 22, in 4 To the right. In the first embodiment, in which the snap lever 21 is locked in the locking position, the shaft 23 has to be displaced axially, in the example in FIG 4 against the force of the spring 25 to the left towards the bearing 22. A user can grasp the operating button 26 and push it away from him against the force of the spring 25, in 4 ie to the left in order to move the shaft 23 and thus the snap lever 21 axially away from the wing elements 20.1 and 20.2 and towards the bearing 22. In the second embodiment, the snap lever 21 has to be pushed down, which, due to the non-rotatable connection, requires the shaft 23 to be able to rotate.

The shaft 23 is journalled in a head of a shutter locking lever 31 which also belongs to the locking device of the anesthetic component 90 . The shutter locking lever 31 is between a locked position [will be described in 4 and 5 a) and 7 a) shown] and a release position [is shown in 5 b) , 6 , 7 b) and 8th shown] movable back and forth. In the representations of 5 until 8th the shutter locking lever 31 is in front of the bearing 22 when in the locked position.

• Einerseits detektiert mindestens ein bevorzugt elektrischer arbeitender Sperrhebel-Sensor, ob der Verschluss-Sperrhebel 31 sich aktuell in der Arretier-Position oder in der Freigabe-Position befindet. Optional wird Redundanz hergestellt, indem mindestens zwei Sperrhebel-Sensoren die aktuelle Position detektieren. Der Sperrhebel-Sensor umfasst beispielsweise einen Kontaktschalter, einen Hall-Sensor mit Magneten und / oder eine Lichtschranke. Gezeigt werden mehrere mögliche Positionen eines Sperrhebel-Sensors. Der Sperrhebel-Sensor 29.a befindet sich in oder an der Haltevorrichtung 15, siehe 5 und 7. Der Sperrhebel-Sensor 29.b wird vom Lager 22 gehalten. Der Sperrhebel-Sensor 29.c von 8 befindet sich unterhalb der Kappe 7 und bevorzugt im Gehäuse des Narkotisierungs-Bauteils 90. Der Sperrhebel-Sensor 29.d von 5 und 7 gehört zu einem nachfolgend beschriebenen Stellantrieb 33.

A user can determine the current position of the shutter lock lever 31 in the following two ways:

• On the one hand, at least one locking lever sensor, which preferably works electrically, detects whether the closure locking lever 31 is currently in the locked position or in the released position. Optionally, redundancy is created by having at least two locking lever sensors detect the current position. The locking lever sensor includes, for example, a contact switch, a Hall sensor with magnets and/or a light barrier. Several possible positions of a locking lever sensor are shown. The locking lever sensor 29.a is located in or on the holding device 15, see 5 and 7 . The locking lever sensor 29.b is held by the bearing 22. The locking lever sensor 29.c from 8th is located below the cap 7 and preferably in the housing of the anesthetic component 90. The locking lever sensor 29.d from 5 and 7 belongs to an actuator 33 described below.

• - In die Aufnahme 60, 60.1 ist kein Narkotisierungs-Bauteil eingesetzt.
• - Der Verschluss-Sperrhebel 31 des eingesetzten Narkotisierungs-Bauteils 90, 90.1 befindet sich in der Arretier-Position.
• - Dieser Verschluss-Sperrhebel 31 befindet sich in der Freigabe-Position.

A display area is assigned to each receptacle 60, 60.1. This display area shows which of the following three situations is currently present:

• - No anesthetic component is used in the receptacle 60, 60.1.
• - The lock locking lever 31 of the used anesthetic component 90, 90.1 is in the locked position.
• - This shutter locking lever 31 is in the release position.

What is displayed on this display area depends on the signal from the component sensor 37, which is assigned to the receptacle 60, 60.1, and from a signal from the locking lever sensor 29.a, 29.b, 29.c, 29.d of the used anesthetic component 90, 90.1 from.

The current position of the shutter lock lever 31 is also displayed in a purely mechanical manner. Thanks to this mechanical display, a user can determine the position even if the ventilator 1 is not currently being supplied with electrical energy or a sensor 37, 29.a, 29.b, 29.c, 29.d is defective. A first indicator or a second indicator is visible behind a viewing window 38 in the tube 65, depending on the position in which the shutter locking lever 31 is currently located. The two display elements differ from one another and the difference can be seen through the viewing window 38 . For example, they have different colors and/or different patterns.

In the locked position, the shutter locking lever 31 prevents the shaft 23 from being displaced axially and against the force of the spring 25 towards the bearing 22. This is because the closure locking lever 31 limits the travel of the actuating button 26 towards the bearing 22 . In the first embodiment, in which the snap lever 21 is locked in the locked position, the snap lever 21 cannot be pushed down or moved away from the cap 7 . In the second embodiment, the shutter lock lever 31 in the locked position prevents the shaft 23 from being rotated, thereby preventing the latch lever 21 from being depressed.

The locked snap lever 21 prevents the cap 7 from being rotated out of the closed position. In a preferred embodiment, however, it is possible to screw the cap 7 onto the feed line 10 even when the closure locking lever 31 is in the locked position. When the cap 7 is turned, a wing element 20.1, 20.2 of the cap 7 slides over the snap lever 21 and the snap lever 21 jumps up.

Two different embodiments of the locking device according to the invention are shown and described below. 5 and 6 Fig. 12 show a first embodiment in which the locking lever 31 and a locking lever 32 described below are fixed to each other and form a single overall locking lever 24 which can be in a locking position or in a release position. According to the second embodiment 7 and 8th allow the two locking levers 31 and 32 to rotate independently of each other and can therefore be in a locked position or in a released position independently of each other. In the second embodiment, one locking lever 31, 32 can be in the release position and at the same time the other locking lever 32, 31 can be in the locked position.

5 a) shows the total locking lever 24 in a locked position, 5 b) in a release position. The same reference symbols have the same meaning as in 4 . In the release position, the shutter locking lever 31 in the first embodiment no longer prevents the shaft 23 from 4 is axially shifted to the bearing 22. In the second embodiment, the shutter locking lever 31 then also no longer prevents the shaft 23 from being rotated. In both implementations, when the closure locking lever 31 is in the release position, it is possible to unscrew the cap 7 from the anesthetic supply line 10 and then refill anesthetic.

As in 5 and in 6 can be seen, the overall locking lever 24 is rotatable about an axis 30 which is perpendicular to the plane of FIG 5 and that of 6 stands. When the anesthetic component 90 is inserted, this axis 30 is arranged horizontally. The axis 30 divides the overall locking lever 24 into the locking locking lever 31, which extends from the axis 30 towards the cap 7 and the latching lever 21, and the removal locking lever 32, which extends downward. In the locked state, the cap lock lever 31 prevents the cap 7 from being rotated.

In the exemplary embodiment shown, the supply arrangement 100 comprises an actuator 33 which is connected to the shutter locking lever 31 via a mechanical connecting element 34 . This actuator 33 preferably belongs to the anesthetic component 90. The connecting element 34 is passed through a tube 65, with the tube 65 guiding the connecting element 34.

The actuator 33 can be controlled from the outside, for example as a reaction to a corresponding release user input. In one embodiment, this user input includes the step that the user clicks on the unlocking button 45 next to the receptacle 60 (cf. 2 ) presses. The controlled actuator 33 rotates the shutter lock lever 31 and thus the overall lock lever 24 from the locked position to the release position. In response to a corresponding locking user input, the actuator 33 is preferably able to move the overall locking lever 24 from the release position back into the locking position. The actuator 33 preferably keeps the overall locking lever 24 in the respective position as long as the user does not make any input, thereby preventing unintentional movement of the overall locking lever 24. In one embodiment, a locking lever sensor 29.d detects the current position of a piston or other movable actuator of the actuator 33.

In the realization of the first embodiment, which is 5 and 6 As shown, a tension spring 35 tends to pull the withdrawal lockout lever 32 toward the anesthetic component 90, thereby rotating and holding the total lockout lever 24 in the detent position. It is also possible that the actuator 33 is designed to be “bistable” and holds the overall locking lever 24 in any end position.

The following is with reference to 7 and 8th described how the second embodiment differs from the first embodiment just described. The same reference symbols have the same meaning as in 5 and 6 .

According to the second embodiment, the closure locking lever 31 can be rotated about an axis 30.1, and the removal locking lever 32 can be rotated about an axis 30.2. The two axes 30.1 and 30.2 are spaced apart and parallel to one another. The two locking levers 31 and 32 can be turned independently of one another because they are not mechanically connected to one another. It is therefore possible—in contrast to the first embodiment—that one locking lever 31, 32 is in the locking position and the other locking lever 32, 31 is in the release position at the same time.

An actuator 33.1 can be actuated from the outside and is able to move the locking lever 31 from the locked position, which is in 7 a) is shown in the release position shown in 7 b) is shown to rotate. The actuating drive 33.1 is connected to the lock locking lever 31 by means of the connecting element 34. The actuator 33.1 can be designed just like the actuator 33 for the overall locking lever 24, or it can be smaller. An actuator 33.2 can be actuated from the outside and is able to move the removal locking lever 32 out of the locked position, which is shown in 7 a) is shown in the release position shown in 7 b) and 8th is shown to rotate. The actuator 33.2 is connected to the removal locking lever 32 by means of the connecting element 34.2. The connecting element 34.2 is passed through a tube 65.2, the tube 65.2 guiding the connecting element 34.2. The current position of the removal locking lever 32 can be seen through a viewing window 38.2 in the tube 65.2.

The two actuators 33.1 and 33.2 can be operated independently of one another. Therefore, a user can cause at most two user inputs that one locking lever 31, 32 is in the locked position and the other locking lever 32, 31 is in the release position.

A first locking lever sensor 29.a, 29.b, 29.c, 29.d detects whether the shutter locking lever 31 is in the locked position or in the released position. A second locking lever sensor 19.a, 19.d detects whether the removal locking lever 32 is in the locked position or in the release position. Several positions for the second locking lever sensor 19.a, 19.d are possible. The second locking lever sensor 19.a can be arranged in the housing of the anesthetic component 90, see FIG 7 and 8th . The locking lever sensor 19.d detects the current position of an actuator of the actuator 33.2. The second locking lever sensor 19.a can be constructed like a locking lever sensor 29.a, 29.b, 29.c.

As already explained above, the anesthetic tank 5 with the closure cap 7 belongs to an anesthetic component 90 which can be inserted into a receptacle 60 of the ventilator 1 and can be removed from this receptacle 60 again. In the locked position, the 5 a) and 7 a) 1, the removal locking lever 32 prevents the anesthetic component 90 from being removed from the receptacle 60. FIG. In the release position, the in 5 b) , 6 , 7 b) and 8th As shown, the removal lockout lever 32 allows the anesthetic component 90 to be removed from the receptacle 60 . This is described in more detail below.

In one possible embodiment, the anesthetic component 90 can be removed from the ventilator 1 by moving it vertically or diagonally upwards. For this purpose it is necessary in one form of implementation to remove the shaft 23 from the 4 position shown, in another embodiment at least one other component below the shaft 23. This movement of the shaft 23 or other component is only possible when the shutter locking lever 31 is in the release position. The overall locking lever 24 in the locked position prevents the shaft 23 or other component from being moved away and then the anesthetic component 90 from being removed from the receptacle.

In a preferred embodiment, however, the anesthetic component 90 can be removed from the receptacle 60 of the ventilator 1 by an approximately horizontal movement in a removal direction ER, with this horizontal movement being directed towards the viewer from 2 and 3 shows and in the representations of 5 until 9 is directed to the right. Guide elements 67 on the housing of the anesthetic component 90, together with corresponding guide elements on the housing 62, guide the anesthetic component 90 when it is inserted into and removed from a receptacle 60, 60.1 and prevent tilting.

The following describes how the removal locking lever 32 blocks or enables this horizontal removal, depending on its position.

A removal handle 40 is rotatably mounted on the housing of the anesthetic component 90 . When the overall locking lever 24 or the removal locking lever 32 is in the locked position, a gap occurs between the removal locking lever 32 and the removal handle 40, cf. 5 a) and 7 a) . Thanks to this distance, the actuator 33 can move the total blocking lever 24 or the actuator 33.2 the removal blocking lever 32 into the release position without the removal handle 40 preventing this movement.

The removal handle 40 is rotatably mounted about the axis 44 and can then, if it is not locked, from a park position [ 5 a) , 7a) ] to a pick position [ 5b) , 7b) ] move. A spring 58 is supported on the axle 44, with a part of the spring 58 being arranged around the axle 44 around. The spring 58 tends to move and hold the removal handle 40 in the park position.

A handle element of the removal handle 40 encloses a space into which a user can reach. In 5 until 9 A portion of the removal handle is shown cut away and components hidden by the removal handle 40 are shown hatched.

A roller 49 at the free end of the removal lock lever 32 abuts the upwardly facing surface of a pawl 46 . The pawl 46 can be rotated about the axis 47 . When the removal lock lever 32 is in the locked position, a downwardly facing notch of the pawl 46 engages a projection 48 of the removal handle 40. As long as the pawl 46 engages the projection 48, it is not possible to pull on the removal handle 40 and thereby rotating the extraction handle 40 about the axis 44 in the release direction FR. Rather, the removal handle 40 is locked.

When the removal lock lever 32 is in the release position, the pawl 46 no longer engages the projection 48. 5 b) , 6 , 7 b) , 8th and 9 show the removal lock lever 32 in the release position. Now it is possible to pull the removal handle 40 into a releasing position, in the example of FIG 5 until 9 To the right. In the example of 5 until 9 the user stands to the right of the ventilator 1 and can pull the removal handle 40, which is in the park position, against the force of the spring 58 in the release direction FR and thereby move it into the removal position. The anesthetic component 90 can then be removed from the receptacle 60 by a linear movement in the removal direction ER, in the example shown also in the release direction FR.

In one implementation, the removal locking lever 32 is mechanically connected to the pawl 46 . When the removal locking lever 32 is rotated from the locked position to the unlocked position, this mechanical connection causes the pawl 46 to rotate upwards about the axis 47 and no longer engage the projection 48 after this rotation. In another embodiment, a spring 57 tends to rotate the pawl 46 upwards about the axis 47 against the force of gravity. The spring 57 is supported on the axle 47 and is guided around the axle 47 . The removal lock lever 32 in the detent position prevents this rotation of the pawl 46. When the removal lock lever 32 is in the release position, the biased spring 57 actually rotates the pawl 46 upwards. In both implementations, the removal locking lever 32 limits the possible upward movement of the pawl 46 . The embodiment with the mechanical connection and the embodiment with the spring 57 can be combined with one another.

The removal handle 40 is articulated to a free end of an unlocking lever 41 . In the other free end of the unlocking lever 41 a recess 55 is attached. The unlocking lever 41 is preferably located completely within the housing of the anesthetic component 90, is rotatably mounted about an axis 42 and can be reached from the outside through a lateral opening 50 in the housing. This opening 50 is preferably sealed, for example with a rubber seal or a lamellar seal. That part of the unlocking lever 41 which is behind the opening 50 is shown hatched

The unlocking lever 41 can be rotated back and forth between a locked position and an unlocked position. In the embodiment, the locking position realized by a lowered position and the unlocked position by a raised position. 6 , 8th and 9 show the raised position. In the locked position, the unlocking lever 41 blocks the process of a user removing the anesthetic component 90 from the receptacle 60 of the ventilator 1 . In the embodiment shown, the recess 55 on the lowered unlocking lever 41 encloses a corresponding retaining element (not shown) on the ventilator 1. In the raised unlocking position, the recess 55 no longer encloses the corresponding element. Therefore, with the raised position, it is possible to pull out and remove the anesthetic component 90 from the receptacle 60 . The guide elements 67 guide the anesthetic component 90 during the process of pulling the anesthetic component 90 out of the ventilator 1 when the unlocking lever 41 is raised.

In the embodiment shown, a compression spring 43 tends to hold the unlocking lever 41 in the lowered locking position. In the realization according to 6 , 8th and 9 the compression spring 43 tends to rotate the unlocking lever 41 counterclockwise about the axis 42 and thereby lower the recess 55. In another embodiment, not shown, a tension spring 43 strives to move the unlocking lever 41 against the force of gravity into the raised unlocking position. In both implementations, an unlocking sensor 51 detects the event that the unlocking lever 41 has been raised from the lowered position.

• - Der Benutzer betätigt ein Betätigungselement für den Stellantrieb 33, 33.1. Bei der ersten Ausführungsform bewegt der angesteuerte Stellantrieb 33 den Gesamt-Sperrhebel 24 aus der Arretier-Position in die Freigabe-Position. Bei der zweiten Ausführungsform bewegt der angesteuerte Stellantrieb 33 den Entnahme-Sperrhebel 32 in die Freigabe-Position.
• - Der Benutzer zieht bei beiden Ausführungsformen am Entnahmegriff 40, wodurch der Entriegelungs-Hebel 41 angehoben wird.

As already mentioned, the unlocking lever 41 is connected to the removal handle 40 in an articulated manner. The step of pulling the extraction handle 40 away from the ventilator 1 in the direction FR, thanks to the articulated connection, causes the unlocking lever 41 to rotate upwards about the axis 42. It is then possible to remove the anesthetic component 90 from the ventilator 1 . Overall, a user therefore performs two actions in order to then remove the anesthetic component 90 from the ventilator 1:

• - The user actuates an actuating element for the actuator 33, 33.1. In the first embodiment, the driven actuator 33 moves the total lock lever 24 from the locked position to the unlocked position. In the second embodiment, the driven actuator 33 moves the removal lock lever 32 to the release position.
• - In both embodiments, the user pulls on the removal handle 40, as a result of which the unlocking lever 41 is raised.

A period of time preferably elapses between the step in which the user actuates the actuating element and the step in which the actuating drive 33 moves the total blocking lever 24 or the actuating drive 33.1 moves the removal blocking lever 32. During this period of time, the anesthetic system 100 stops generating the gas mixture and the anesthetic component 90 reduces the pressure in its anesthetic tank 5.

As previously mentioned, it is only possible to pull and thereby rotate the eject handle 40 when the eject lock lever 32 is in the release position. Conversely, when the removal lock lever 32 is in the locked position, the removal lock lever 32, in cooperation with the pawl 46, prevents the removal handle 40 from rotating. The actuator 33 preferably holds the overall blocking lever 24 or the actuator 33.1 the removal blocking lever 32 both in the release position and in the locking position as long as no user input for actuating the actuator 33 is detected.

It is possible that the actuator 33, 33.1 has failed, for example because it is not being supplied with electrical energy. It is also possible that, for another reason, it is desired or necessary to remove the anesthetic component 90 without activating the actuator 33, 33.1. It is therefore preferably possible for a user to lift the unlocking lever 41 directly, ie without pulling on the removal handle 40 . This process is referred to below as "emergency unlocking".

In one embodiment, an opening 50 is let into the housing of the anesthetic component 90 . This opening 50 is located next to the unlocking lever 41. A user can also reach through this opening 50 from the side when the anesthetic component 90 is inserted, for example with a stretched finger, and then press the unlocking lever 41 upwards from the side . The position of the opening 50 on the side of the housing reduces the risk of a user accidentally pushing the release lever 41 upwards. The opening 50 is preferably closed by a closure, for example a flap or cap or membrane. In one embodiment, a user has to push a membrane sideways or upwards in order to be able to move the unlocking lever 41 . This reduces the risks of the unlocking lever 41 being operated accidentally and dirt entering. It is also possible that the unlocking Lever 41 protrudes laterally beyond the housing of the anesthetic component 90.

9 shows a comparison between the process of actuating the unlocking lever 41 using the unlocked removal handle 40 and the process of pushing the unlocking lever 41 upwards with the removal handle 40 locked. The same reference symbols have the same meaning as in 5 until 8th .

In the embodiment shown, the removal handle 40 can in turn be rotated about the axis 44 and comprises an axis 54 which rests from above on the free end of the unlocking lever 41 pointing towards the removal handle 40, in 9 at the right free end. In the two in 9 In the situations shown, the anesthetic component 90 can be removed from the receptacle 60 .

In the situation that 9 a) shows, the removal handle 40 is unlocked and pulled relative to the receptacle 60 in the release direction FR. The axis 54 presses on the adjacent free end of the unlocking lever 41, and the unlocking lever 41 is rotated about the axis 42, clockwise in the example shown. The lever arm with the recess 55 facing away from the removal handle 40 is turned upwards, which is indicated by the arrow Pf.

In the situation that 9 b) shows, the removal handle 40 is locked because the pawl 46 engages the projection 48. A user has pressed the opposite lever arm of the unlocking lever 41 with the recess 55 upwards, as a result of which a gap between the unlocking lever 41 and the axis 54 has occurred. The recess 55 no longer encompasses the corresponding element on the receptacle 60 of the ventilator 1.

Of course, another mechanical chain of action between the removal handle 40 and the unlocking lever 41 is also possible. This other mechanical chain of effects is also not used for emergency unlocking.

As already explained, there is an overpressure in the anesthetic tank 5 as long as the anesthetic dispenser 3 feeds anesthetic into a carrier gas. If the emergency unlocking is carried out and then the anesthetic component 90 is removed from the receptacle 60, this overpressure is still present unless it was already lowered before the emergency unlocking was carried out. It is possible to take the anesthetic component 90 out of the receptacle 60 by actuating the emergency release and carry it to an area in which the anesthetic can escape and is collected. Note: Anesthetic is usually heavier than air and therefore sinks to the bottom.

In one embodiment, an upper closure element 80 is arranged at the upper end or above the anesthetic tank 5, cf. 5 and 7 . A lower closure element 81 is provided at the lower end or below the anesthetic tank 5 . Both closure elements 80, 81 are closed in the infeed state and each include a wheel. In the infeed state, the wheel of the upper closure element 80 closes an opening at the top in the anesthetic tank 5. A hose is attached to a lower opening of the anesthetic tank 5, which the wheel of the lower closure element 81 closes in the feed state and releases after actuation. Each wheel can only be operated with a suitable tool, reducing the risk of accidental or unauthorized operation. If the anesthetic component 90 is upright, the top opening will face up and the bottom opening will face down. If the upper wheel is actuated and the upper opening is thereby opened, gaseous anesthetic can escape upwards from the anesthetic tank 5 . If the lower wheel is actuated, liquid anesthetic can flow through the lower opening into the now opened tube and through the tube into a suitable container provided.

• - Sobald in die Aufnahme 60 des Beatmungsgeräts 1 ein Narkotisierungs-Bauteil 90 eingesetzt ist, detektiert der Bauteil-Sensor 37 für die Aufnahme 60 dieses Ereignis. Bei der ersten Ausführungsform gemäß 5 und 6 detektiert der Sperrhebel-Sensor 29.a, 29.b, 29.c, 29.d, ob der Gesamt-Sperrhebel 24 in der Arretier-Position oder in der Freigabe-Position ist. Bei der zweiten Ausführungsform gemäß 7 und 8 detektiert der erste Sperrhebel-Sensor 29.a, 29.b, 29.c, 29.d, ob der Verschluss-Sperrhebel 31 in der Arretier-Position oder in der Freigabe-Position ist, und der zweite Sperrhebel-Sensor 19.a, 19.d, ob der Entnahme-Sperrhebel 32 in der Arretier-Position oder in der Freigabe-Position ist. Falls der Gesamt-Sperrhebel 24 bzw. der Entnahme-Sperrhebel 32 in der Freigabe-Position ist, wird automatisch der Stellantrieb 33 (erste Ausführungsform) bzw. der Stellantrieb 33.2 (zweite Ausführungsform) angesteuert und bewegt den Gesamt-Sperrhebel 24 bzw. den Entnahme-Sperrhebel 32 in die Arretier-Position. Wie bereits oben erwähnt wird, führt das Narkotisierungs-Bauteil 90 automatisch einen Selbsttest durch, nachdem es in eine Aufnahme 60, 60.1 eingesetzt wurde. Der Gesamt-Sperrhebel 24 bzw. der Entnahme-Sperrhebel 32 in der Arretier-Position verhindert, dass das Narkotisierungs-Bauteil 90 während des Selbsttests und des Hochfahrens wieder aus der Aufnahme 60 entnommen wird.
• - Das Beatmungsgerät 1 kann in einem Betriebs-Zustand betrieben werden, in dem das Beatmungsgerät 1 eine Abfolge von Beatmungshüben ausführt und dadurch den Patienten P mit dem Gasgemisch versorgt und ihn narkotisiert. Falls das Beatmungsgerät 1 in dem Betriebs-Zustand betrieben werden soll und bei der ersten Ausführungsform der Sperrhebel-Sensor 29.a, 29.b, 29.c, 29.d detektiert, dass der Gesamt-Sperrhebel 24 in der Freigabe-Position ist, so wird in einer Ausgestaltung eine Warnung in einer von einem Menschen wahrnehmbaren Form ausgegeben. Bei der zweiten Ausführungsform wird diese Warnung ausgegeben, wenn der erste Sperrhebel-Sensor 29.a, 29.b, 29.c, 29.d detektiert, dass der Verschluss-Sperrhebel 31 in der Freigabe-Position ist, oder der zweite Sperrhebel-Sensor 19.a, 19.d detektiert, dass der Entnahme-Sperrhebel 32 in der Freigabe-Position ist.
• - In einer anderen Ausgestaltung wird in dieser Situation bei der ersten Ausführungsform der Stellantrieb 33 automatisch angesteuert und bewegt den Gesamt-Sperrhebel 24 in Verbindung mit der Feder 35 in die Arretier-Position. Bei der zweiten Ausführungsform wird gemäß dieser anderen Ausgestaltung der Stellantrieb 33.1 angesteuert und bewegt den Verschluss-Sperrhebel 31 in die Arretier-Position, oder der Stellantrieb 33.2 wird angesteuert und bewegt den Entnahme-Sperrhebel 32 in die Arretier-Position. Die beiden Ausgestaltungen, dass eine Warnung ausgegeben wird und dass ein Stellantrieb 33, 33.1, 33.2 angesteuert wird, lassen sich miteinander kombinieren.
• - Der Verschluss-Sensor 36 detektiert, ob die Verschlusskappe 7 die Narkosemittel-Zuführleitung 10 verschließt oder nicht. Der Bauteil-Sensor 37 für die Aufnahme 60 vermag das Ereignis zu detektieren, dass der Vorgang begonnen wird, ein Narkotisierungs-Bauteil 90 aus der Aufnahme 60 zu entfernen. Falls die beiden Sensoren 36 und 37 detektieren, dass das Narkotisierungs-Bauteil 90 bei nicht geschlossener Kappe 7 aus der Aufnahme entnommen werden soll, so wird in einer Realisierungsform der Gesamt-Sperrhebel 24 (erste Ausführungsform) bzw. der Entnahme-Sperrhebel 32 (zweite Ausführungsform) automatisch in die Arretier-Position gebracht, sodass das Narkotisierungs-Bauteil 90 nicht entnommen werden kann. Außerdem wird eine Warnung in einer von einem Menschen wahrnehmbaren Form ausgegeben. Dadurch wird das Risiko verringert, dass das Narkotisierungs-Bauteil 90 mit geöffneter Kappe 7 transportiert wird. Hierbei könnte Narkosemittel aus dem Narkosemitteltank 5 in die Umgebung austreten, was unerwünscht ist.
• - Falls das Beatmungsgerät 1 im Betriebs-Zustand betrieben wird, so sollte das Narkotisierungs-Bauteil 90 nicht aus der Aufnahme 60 entnommen werden, um die Narkotisierung des Patienten P nicht zu unterbrechen. In diesem Betriebs-Zustand des Beatmungsgeräts 1 ist der Entnahme-Sperrhebel 32 in der Arretier-Position und verhindert, dass das Narkotisierungs-Bauteil 90 entnommen wird. Jedoch kann ein Benutzer eine Benutzereingabe tätigen, um den Vorgang auszulösen, dass bei der ersten Ausführungsform der Stellantrieb 33 den Gesamt-Sperrhebel 24 oder bei der zweiten Ausführungsform der Stellantrieb 33.2 den Entnahme-Sperrhebel 32 in die Freigabe-Position bewegt. Falls der Benutzer diese Benutzereingabe tätigt, während das Beatmungsgerät 1 im Betriebs-Zustand ist, so wird bevorzugt eine Meldung in einer von einem Menschen wahrnehmbaren Form ausgegeben. Der Stellantrieb 33 bzw. 33.2 bewegt den Gesamt-Sperrhebel 24 bzw. den Entnahme-Sperrhebel 32 entweder gar nicht in die Freigabe-Position, solange das Beatmungsgerät 1 im Betriebs-Zustand ist, oder erst dann, wenn der Benutzer nach Ausgabe der Meldung bestätigt, dass tatsächlich der Gesamt-Sperrhebel 24 bzw. der Entnahme-Sperrhebel 32 bewegt werden soll.
• - In einer Ausgestaltung der ersten Ausführungsform ist der Stellantrieb 33 deaktiviert, solange das Beatmungsgerät 1 im Betriebs-Zustand ist, und kann dann daher nicht den Gesamt-Sperrhebel 24 in die Freigabe-Position bewegen. In einer anderen Ausgestaltung bewegt der Stellantrieb 33 den Gesamt-Sperrhebel 24 dann, wenn das Beatmungsgerät 1 im Betriebs-Zustand ist, nur dann in die Freigabe-Position, wenn erstens der Benutzer bestätigt hat, dass er diese Freigabe wünscht, obwohl das Beatmungsgerät 1 im Betriebs-Zustand ist, und wenn zweitens seit dieser Bestätigung ein vorgegebenes freigebendes Ereignis eingetreten ist. Beispielsweise ist eine vorgegebene Zeitspanne verstrichen, und in dieser Zeitspanne wird der Druck im Narkosemitteltank 5 ausreichend abgesenkt. Oder ein nicht gezeigter Drucksensor stellt fest, dass der Druck im Narkosemitteltank 5 ausreichend abgesenkt ist. Weil auf das freigebende Ereignis gewartet wird, wird das Risiko reduziert, dass eine große Menge von Narkosemittel in die Umgebung gelangt.
• - Entsprechend bewegt bei der zweiten Ausführungsform der Stellantrieb 33.2 den Entnahme-Sperrhebel 32 nur dann in die Freigabe-Position, wenn erstens der Benutzer bestätigt hat, dass er diese Freigabe wünscht, obwohl das Beatmungsgerät 1 im Betriebs-Zustand ist, und wenn zweitens nach dieser Bestätigung das vorgegebene freigebende Ereignis eingetreten ist.
• - Möglich ist, dass ein Benutzer Narkosemittel in einen Narkosemitteltank 5, 5.1 nachfüllen möchte, während sich das Narkotisierungs-Bauteil 90, 90.1 in einer Aufnahme 60, 60.1 befindet und der Verschluss 7, 7.1 verschlossen und arretiert ist. Gemäß der ersten Ausführungsform aktiviert der Benutzer den Stellantrieb 33, und der aktivierte Stellantrieb 33 bewegt den Gesamt-Sperrhebel 24 in die Freigabe-Position. Gemäß der zweiten Ausführungsform aktiviert der Benutzer den Stellantrieb 33.1, und der aktivierte Stellantrieb 33.1 bewegt den Verschluss-Sperrhebel 31 in die Freigabe-Position. In beiden Ausführungsformen wird der Sperrhebel 24 bzw. 31 erst dann bewegt, wenn das vorgegebene freigebende Ereignis eingetreten ist.
• - Auch dann, wenn das Beatmungsgerät 1 im Betriebs-Zustand ist, kann der Benutzer folgende Schritte durchführen: Der Benutzer hebt den Entriegelungs-Hebel 41 an, beispielsweise indem er von der Seite durch die Öffnung 50 im Gehäuse des Narkotisierungs-Bauteils 90 greift und den Entriegelungs-Hebel 41 nach oben dreht. Anschließend kann der Benutzer das Narkotisierungs-Bauteil 90 aus der Aufnahme 60 entnehmen. Falls der Entriegelungs-Sensor 51 das Ereignis detektiert, dass der Entriegelungs-Hebel 41 angehoben worden ist, und falls gleichzeitig das Beatmungsgerät 1 im Betriebs-Zustand ist und Beatmungshübe ausführt, so wird eine Warnung in einem von einem Menschen wahrnehmbaren Form ausgegeben. Dadurch wird das Risiko verhindert, dass ein Benutzer ungewollt während einer Narkotisierung das Narkotisierungs-Bauteil 90 entnimmt.
• - Möglich ist, dass ein Benutzer eine Benutzereingabe mit dem Ziel vornimmt, dass das Beatmungsgerät 1 heruntergefahren und anschließend ausgeschaltet wird, beispielsweise um es zu einem anderen Ort zu transportieren. Falls diese Benutzereingabe detektiert wird, so wird bevorzugt ein Überdruck im Narkosemitteltank 5 abgebaut. Falls nach dieser Benutzereingabe außerdem bei der ersten Ausführungsform der Sperrhebel-Sensor 29.a, 29.b, 29.c, 29.d detektiert, dass der Gesamt-Sperrhebel 24 in der Arretier-Position ist, so wird automatisch der Stellantrieb 33 angesteuert. Der Stellantrieb 33 bewegt den Gesamt-Sperrhebel 24 in die Freigabe-Position. Entsprechend wird bei der zweiten Ausführungsform automatisch der Stellantrieb 33.1 angesteuert und bewegt den Verschluss-Sperrhebel 31 in die Freigabe-Position. Nunmehr lässt sich bei beiden Ausführungsformen die Kappe 7 abschrauben, ohne dass Narkosemittel austritt. Außerdem lässt sich das gesamte Narkotisierungs-Bauteil 90 aus der Aufnahme 60 entnehmen. Möglich ist es, nunmehr den Narkosemitteltank 5 aufzufüllen. Möglich ist auch, das Narkotisierungs-Bauteil 90 in eine korrespondierende Aufnahme eines anderen Beatmungsgeräts einzusetzen.

The locking device just described, in cooperation with the sensors, prevents undesired actuation of the supply arrangement 100 in many cases. Some examples are described below.

• - As soon as an anesthetic component 90 is inserted into the receptacle 60 of the ventilator 1, the component sensor 37 for the receptacle 60 detects this event. According to the first embodiment 5 and 6 the locking lever sensor 29.a, 29.b, 29.c, 29.d detects whether the total locking lever 24 is in the locked position or in the release position. According to the second embodiment 7 and 8th the first lock lever sensor 29.a, 29.b, 29.c, 29.d detects whether the shutter lock lever 31 is in the lock position or in the release position, and the second lock lever sensor 19.a , 19.d, whether the removal locking lever 32 is in the locked position or in the release position. If the total blocking lever 24 or the removal blocking lever 32 is in the release position, the actuator 33 (first embodiment) or the actuator 33.2 (second embodiment) is activated automatically and moves the total blocking lever 24 or the removal -Locking lever 32 in the locking position. As already mentioned above, the anesthetic component 90 auto automatically performs a self-test after it has been inserted into a receptacle 60, 60.1. The total blocking lever 24 or the removal blocking lever 32 in the locked position prevents the anesthetic component 90 from being removed from the receptacle 60 again during the self-test and the start-up.
• - The ventilator 1 can be operated in an operating state in which the ventilator 1 executes a sequence of ventilation strokes and thereby supplies the patient P with the gas mixture and anesthetizes him. If the ventilator 1 is to be operated in the operating state and in the first embodiment the lock lever sensor 29.a, 29.b, 29.c, 29.d detects that the overall lock lever 24 is in the release position , in one embodiment a warning is issued in a form perceptible to a human. In the second embodiment, this warning is issued when the first lock lever sensor 29.a, 29.b, 29.c, 29.d detects that the shutter lock lever 31 is in the release position, or the second lock lever Sensor 19.a, 19.d detects that the removal locking lever 32 is in the release position.
• - In another embodiment, in this situation, in the first embodiment, the actuator 33 is automatically actuated and moves the total locking lever 24 in connection with the spring 35 into the locking position. In the second embodiment, according to this other configuration, the actuator 33.1 is actuated and moves the closure locking lever 31 into the locking position, or the actuator 33.2 is actuated and moves the removal locking lever 32 into the locking position. The two configurations that a warning is issued and that an actuator 33, 33.1, 33.2 is activated can be combined with one another.
• - The closure sensor 36 detects whether the closure cap 7 closes the anesthetic supply line 10 or not. Component sensor 37 for receptacle 60 is capable of detecting the event that the process of removing an anesthetic component 90 from receptacle 60 is initiated. If the two sensors 36 and 37 detect that the anesthetic component 90 is to be removed from the receptacle when the cap 7 is not closed, then in one embodiment the overall locking lever 24 (first embodiment) or the removal locking lever 32 (second Embodiment) automatically brought into the locked position, so that the anesthetic component 90 can not be removed. A warning is also issued in a human perceptible form. This reduces the risk of the anesthetic component 90 being transported with the cap 7 open. In this case, anesthetic could escape from the anesthetic tank 5 into the environment, which is undesirable.
• - If the ventilator 1 is operated in the operating state, the anesthetic component 90 should not be removed from the receptacle 60 in order not to interrupt the anesthetic of the patient P. In this operating state of the ventilator 1, the removal locking lever 32 is in the locked position and prevents the anesthetic component 90 from being removed. However, a user can provide a user input to trigger the process of the actuator 33 moving the total locking lever 24 in the first embodiment or the actuator 33.2 moving the removal locking lever 32 to the release position in the second embodiment. If the user makes this user input while the ventilator 1 is in the operating state, a message is preferably output in a form perceptible to a human being. The actuator 33 or 33.2 either does not move the total blocking lever 24 or the removal blocking lever 32 into the release position as long as the ventilator 1 is in the operating state, or only when the user confirms this after the message has been output that actually the total locking lever 24 or the removal locking lever 32 is to be moved.
• - In a refinement of the first embodiment, the actuator 33 is deactivated as long as the ventilator 1 is in the operating state and can therefore not then move the total locking lever 24 to the release position. In another embodiment, when the ventilator 1 is in the operating state, the actuator 33 moves the total locking lever 24 into the release position only if, firstly, the user has confirmed that he wants this release, although the ventilator 1 is in operational condition, and secondly, if a predetermined enabling event has occurred since that confirmation. For example, a predetermined period of time has elapsed, and in this period of time the pressure in the anesthetic tank 5 is sufficiently reduced. Or a pressure sensor (not shown) determines that the pressure in the anesthetic tank 5 has dropped sufficiently. Because the enabling event is awaited, the risk of spilling a large amount of anesthetic into the environment is reduced.
• - Correspondingly, in the second embodiment, the actuator 33.2 moves the removal locking lever 32 into the release position only if firstly the user has confirmed that he wants this release although the ventilator 1 is in the operating state, and secondly if after this confirmation, the specified releasing event has occurred.
• It is possible that a user would like to refill anesthetic into an anesthetic tank 5, 5.1 while the anesthetic component 90, 90.1 is in a receptacle 60, 60.1 and the closure 7, 7.1 is closed and locked. According to the first embodiment, the user activates the actuator 33 and the activated actuator 33 moves the overall lock lever 24 to the release position. According to the second embodiment, the user activates the actuator 33.1 and the activated actuator 33.1 moves the shutter locking lever 31 to the release position. In both embodiments, the blocking lever 24 or 31 is not moved until the specified releasing event has occurred.
• - Even if the ventilator 1 is in the operating state, the user can carry out the following steps: The user lifts the unlocking lever 41, for example by reaching through the opening 50 in the housing of the anesthetic component 90 from the side and turns the unlocking lever 41 upwards. The user can then remove the anesthetic component 90 from the receptacle 60 . If the unlocking sensor 51 detects the event that the unlocking lever 41 has been raised, and if at the same time the ventilator 1 is in the operating state and is performing ventilation strokes, a warning is issued in a form perceptible to a human being. This prevents the risk of a user unintentionally removing the anesthetic component 90 during anesthesia.
• - It is possible that a user makes a user input with the aim that the ventilator 1 is shut down and then switched off, for example in order to transport it to another location. If this user input is detected, an overpressure in the anesthetic tank 5 is preferably reduced. If, after this user input, the locking lever sensor 29.a, 29.b, 29.c, 29.d also detects in the first embodiment that the overall locking lever 24 is in the locking position, the actuator 33 is automatically actuated . The actuator 33 moves the overall lock lever 24 to the release position. Correspondingly, in the second embodiment, the actuator 33.1 is activated automatically and moves the lock locking lever 31 into the release position. In both embodiments, the cap 7 can now be unscrewed without the anesthetic escaping. In addition, the entire anesthetic component 90 can be removed from the receptacle 60 . It is now possible to fill up the anesthetic tank 5 . It is also possible to insert the anesthetic component 90 into a corresponding receptacle of another ventilator.

10 shows an example of how a user is informed about the current status of the locking device. The viewing direction of 10 is that of a user looking at the two anesthetic components 90, 90.1 in the two receptacles 60, 60.1. Shown are those components of the two anesthetic components 90, 90.1, which are also shown in 3 are shown, as well as a removal handle 40, 40.1 and an actuating button 26, 26.1. In the example of 10 the anesthetic component 90.1 is inserted into the receptacle 60 and the anesthetic component 90 is inserted into the receptacle 60.1. The locking levers 31, 32 are 10 Not shown.

1. 1. Verschluss-Sperrhebel 31 in der Arretier-Position, keine Freigabe der Verschlusskappe 7 gewünscht,
2. 2. Verschluss-Sperrhebel 31 in der Arretier-Position, Freigabe der Verschlusskappe 7 gewünscht, Druck im Narkosemitteltank 5 wird reduziert, freigebendes Ereignis noch nicht eingetreten,
3. 3. freigebendes Ereignis ist eingetreten, Verschluss-Sperrhebel 31 wird in die Freigabe-Position bewegt,
4. 4. Verschluss-Sperrhebel 31 ist in der Freigabe-Position, Verschlusskappe 7 lässt sich öffnen.

As already explained, the pressure in the anesthetic tank 5 is reduced first. When the pressure has dropped sufficiently, a releasing event has occurred and only then can the closure cap 7, 7.1 be opened. Therefore, an anesthetic component 90, 90.1 is in one of the following four possible states with respect to the anesthetic tank 5:

1. 1. Closure locking lever 31 in the locked position, no release of the closure cap 7 desired,
2. 2. Closure locking lever 31 in the locked position, release of the closure cap 7 desired, pressure in the anesthetic tank 5 is reduced, releasing event has not yet occurred,
3. 3. releasing event has occurred, shutter locking lever 31 is moved to the release position,
4. 4. Bolt locking lever 31 is in the release position, bolt cap 7 can be opened.

When the anesthetic assembly 90 is operative and providing a gas mixture, it is in state 1. To cause the latch locking lever 31 to move to the release position, a user presses the release button 45 or takes another appropriate user input. As a reaction to this input, the pressure in the anesthetic tank 5 is first reduced. The shutter lock lever 31 remains initially in the locked position. The anesthetic component 90 is in state 2. As soon as the releasing event has occurred, for example the pressure has been reduced sufficiently, the anesthetic component 90 is in state 3. The actuating drive 33 or 33.1 now transfers the overall locking lever 24 and thus the shutter locking lever 31 in the release position. The anesthetic component 90 is now in state 4. The closure cap 7 can be unscrewed.

In the first embodiment, the removal handle 40 can now also be actuated, and the anesthetic component 90 can be removed from the receptacle 60.1. Accordingly, actuating the unlocking button 45.1 causes the anesthetic component 90.1 to be removed from the receptacle 60.

In the vicinity of the closure cap 7 there is an indicator light 70, cf. 5 and 7 . The indicator light 70 has the shape of a ring, for example, and is arranged below the closure cap 7 and at the upper end of the feed line 10 . The indicator light 70 is able to visually indicate possible states in three different ways. This gives a user an immediate indication that user input has been captured. For example, in state 1 (normal operation), the indicator light 70 is off. In state 2, ie immediately after a user input, and in state 3 the indicator light 70 flashes. As soon as state 4 has occurred, the indicator light 70 is permanently lit for a predetermined period of a few seconds and then goes out again.

In both embodiments, the anesthetic component 90 can be removed from the receptacle 60 when the unlocking lever 41 has been moved to the unlocked position. To effect this, a user pulls on the removal handle 40. The removal lock lever 32 in the locked position locks the removal handle 40 so that the removal handle 40 cannot be moved. In the first embodiment ( 5 and 6 , overall locking lever 24), the anesthetic component 90 can only be removed from the receptacle 60 with the closure cap 7 unlocked, in the second embodiment ( 7 and 8th , two independent locking levers 31 and 32) also with locked cap 7.

1. 1. Entnahme-Sperrhebel 32 in der Arretier-Position, keine Entnahme des Narkotisierungs-Bauteils 90 gewünscht,
2. 2. Entnahme des Narkotisierungs-Bauteils 90 gewünscht, Entnahme-Sperrhebel 32 wird aus der Arretier-Position in die Freigabe-Position bewegt,
3. 3. Entnahme-Sperrhebel 32 ist in der Freigabe-Position, Entnahmegriff 40 lässt sich bewegen

With regard to the receptacle 60, an anesthetic component 90 is therefore in one of the following possible states:

1. 1. Removal locking lever 32 in the locked position, no removal of the anesthetic component 90 desired,
2. 2. Removal of the anesthetic component 90 desired, removal locking lever 32 is moved from the locked position to the release position,
3. 3. Extraction locking lever 32 is in the release position, extraction handle 40 can be moved

In order to cause the removal locking lever 32 to be moved to the release position, the user actuates the unlocking button 45 (first embodiment) or a further unlocking button (not shown) (second embodiment). The actuator 33 (first embodiment) or 33.2 (second embodiment) then moves the removal locking lever 32 into the release position.

In one embodiment, an indicator light 72 on the removal handle 40 indicates which of these three states the anesthetic component 90 is currently in, cf. 10 . For example, the indicator light 72 is configured in state 1, flashes in state 2 and is permanently switched on in state 3 for a predetermined period of time.

A status display 73 with an arrow pointing upwards is arranged on the removal handle 40 above the indicator light 72 . This status display 73 shows the position in which the removal handle 40 is located, i.e. whether it is in the park position [ 5 a) , 7a) ] or in the removal position [ 5b) , 6 , 7b) , 8th ] is located. For example, the arrow on the status indicator 73 lights when the removal handle 40 is in the removal position.

Reference List

1

Respirator, performs ventilation strokes, is supplied with a gas mixture comprising a carrier gas with oxygen and an anesthetic by the supply arrangement 100, includes the display and operating unit 52 on the arm 64, the housing 62 and the chassis 53, with the patient-side coupling unit 2 connected, belongs to the anesthetic system 200

2

patient-side coupling unit, connected to the patient P and to the ventilator 1

3

Anesthetic dispenser of the anesthetic component 90, receives anesthetic from the anesthetic tank 5 and carrier gas from the carrier gas mixer 6, includes the mixing chamber 9 and the heater 4, belongs to the anesthetic component 90

3.1

Anesthetic dispenser of the anesthetic component 90.1

4

Anesthetic dispenser heater 3

5

Anesthetic tank of the anesthetic component 90, connected to the anesthetic dispenser 3 and the compressed air connection 11

5.1

Anesthetic tank of the anesthetic component 90.1

6

Carrier gas mixer, connected to the anesthetic dispenser 3 and the supply connection 12

7

Closure for the anesthetic tank 5, closes the anesthetic supply line 10, has the form of a rotatable cap, includes the wing elements 20.1, 20.2, can be rotated about the axis D

7.1

Closure for the anesthetic tank 5.1 can be attached to the supply line 10.1 and removed again

8th

Refill container for liquid anesthetic can be placed on the supply line 10 with the closure 7 removed

9

Mixing tank of the anesthetic dispenser 3, heated by the heater 4

10

Supply line for liquid anesthetic, leads to the anesthetic tank 5, can be closed by the closure 7, belongs to the anesthetic component 90

10.1

Feed line to the anesthetic tank 5.1, can be closed by the closure 7.1, belongs to the anesthetic component 90.1

11

Compressed air connection in the wall W

12

Supply connection in the wall W, provides the components of the carrier gas, connected to the carrier gas mixer 6

13

Concentration sensor measures a measure of the concentration of anesthetic in the gas mixture which the anesthetic dispenser 3 generates

15

Holding device of the anesthetic component 90 carries the supply line 10, a receptacle for the closure 7, the bearing 22 and the locking lever sensor 29.a

19.a

Lockout lever sensor in the housing of the anesthetic component 90, detects whether the removal lockout lever 32 is in the locked position or in the released position

19.d

Locking lever sensor detects the current position of an actuator of the actuator 33.2 and thus whether the removal locking lever 32 is in the locked position or in the release position

20.1,

Wing elements attached to the side of the closure cap 7

20.2

are located above the snap lever 21

21

Snap lever is located below a wing element 20.1, 20.2

22

Bearing, in which the shaft 23 is rotatably held, carries the locking lever sensor 29.b

23

Shaft carries the actuating button 26, held by the bearing 22, encompassed by the sleeve 27, in one embodiment non-rotatably connected to the sleeve 27

24

Overall locking lever, rotatable about axis 30, includes locking locking lever 31 and extraction locking lever 32

25

Spring, which is supported on the bearing 22 and strives to press the snap lever 21 against the closure cap 7

26

Actuating button on shaft 23 of anesthetic component 90 allows a user to move shaft 23 towards bearing 22 and thereby move latch 21 away from wing members 20.1 and 20.2

26.1

Actuating button of the anesthetic component 90.1

27

Sleeve, firmly connected to the snap lever 21, surrounds the shaft 23, in one embodiment non-rotatably connected to the shaft 23

29.a

Locking lever sensor, which detects whether the shutter locking lever 31 and thus the total locking lever 24 is in the locking position or in the release position, is arranged on the holding device 15

29.b

Locking lever sensor, which detects whether the shutter locking lever 31 and thus the overall locking lever 24 is in the locked position or in the released position, is arranged on the bearing 22

29.c

Locking lever sensor, detecting whether the shutter locking lever 31 is in the locked position or in the released position, is arranged in the housing of the anesthetic component 90

29.d

Locking lever sensor, detects the current position of an actuator of the actuator 33.1 and thus whether the lock locking lever 31 is in the locked position or in the release position

30

Axis about which the overall locking lever 24 is rotatably mounted

30.1

Axis about which the closure locking lever 31 is rotatably mounted, spatially spaced from the axis 30.2

30.2

Axis about which the removal locking lever 32 is rotatably mounted, spatially spaced from the axis 30.1

31

The breech locking lever for locking the breech 7, connected to the connecting element 34, belongs to the overall locking lever 24 in the first embodiment and can be rotated about the axis 30.1 in the second embodiment

32

Removal locking lever for locking the anesthetic component 90, which in the first embodiment belongs to the overall locking lever 24, is rotatable about the axis 30.2 in the second embodiment

33

Actuator, which rotate the total locking lever 24 against the force of the spring 35 about the axis 30 and thereby move from the locked position to the release position

33.1

Actuator, which can rotate the closure locking lever 31 about the axis 30.1 and thereby move it from the locked position to the release position

33.2

Actuator which can rotate the removal locking lever 32 against the force of the spring 35 about the axis 30.2 and thereby move it from the locking position to the release position

34

mechanical connecting element between the actuator 33 or 33.1 and the lock locking lever 31

34.2

mechanical connecting element between the actuator 33.2 and the removal locking lever 32

35

Spring connected to the pick lock lever 32 tends to keep the pick lock lever 32 in the locked position

36

Closure sensor, detects the position of the closure cap 7

37

Component sensor for a receptacle 60 of the ventilator 1, detects whether an anesthetic component 90 is inserted into the receptacle 60 or not

38

Viewing window in the tube 65, behind which two different display elements make the current position of the shutter locking lever 31 visible

38.2

Viewing window in the tube 65.2, behind which two different display elements make the current position of the removal locking lever 32 visible

40

Removal handle of the anesthetic component 90, can be rotated about the axis 44, is mechanically connected to the unlocking lever 41 so that it can be rotated, includes the indicator light 72 and the status display 73

40.1

Removal handle of the anesthetic component 90.1 includes the indicator light 72.1 and the status display 73.1

41

Unlocking lever, rotatably mechanically connected to extraction handle 40, rotatable about axis 42 between a lowered locking position and a raised unlocking position, comprises recess 55 accessible through opening 50

42

Axis about which the unlocking lever 41 can be rotated

43

Compression spring which tends to rotate the unlocking lever 41 about the axis 42 and thereby hold it in the locked position

44

Axis about which the removal handle 40 is rotatable

45, 45.1

Release buttons in the housing of the ventilator 1, assigned to the receptacles 60 or 60.1, lead to activation of the actuator 33 of the anesthetic component 90 or 90.1 used

46

Pawl, pivoted about axis 47, engages projection 48, in contact with roller 49

47

Axis about which the pawl 46 is rotatably mounted

48

Projection on the removal handle 40, of the pawl 46 includes

49

Roller on the free end of the removal locking lever 32, can slide over the upwardly facing surface of the pawl 46

50

Opening in the housing of the anesthetic component 90 through which the emergency release lever 41 can be reached from the outside

51

Unlatch sensor, detects the event that the unlatch lever 41 has been raised from the rest position

52

Display and control unit of the ventilator 1, rotatably mounted on the arm 64

53

Ventilator chassis 1

54

Axis on the removal handle 40 pushes a free end of the unlocking lever 41 down

55

Recess on a free end of the unlocking lever 41 engages in a corresponding recess on the receptacle 60

57

Spring about axis 47 tends to turn pawl 46 upwards against gravity

58

Spring about the axis 44 tends to move the removal handle 40 to the park position and to hold it in the park position

60

Accommodating the ventilator 1, capable of accommodating an anesthetic component 90, 90.1, is located in the bulge 61

60.1

further accommodation of the ventilator 1, capable of accommodating the anesthetic component 90.1, 90 is located in the bulge 61

61

inward-pointing bulge in the housing of the ventilator 1 accommodates the receptacles 60 and 60.1

62

The housing of the ventilator 1 has the bulge 61

63

Engagement area of the receptacle 60

63.1

Intervention area of the recording 60.1

64

Arm on the housing 62 carries the display and operating unit 52

65

The tube through which the connecting element 34 is guided has the viewing window 38

65.2

The tube through which the connecting element 34.2 is guided has the viewing window 38.2

67

Guide elements on the housing of the anesthetic component 90, together with corresponding guide elements on the housing 62, guide the anesthetic component 90 when it is inserted into and removed from a receptacle 60, 60.1

70

Indicator light on the closure cap 7 indicates the status of the anesthetic component 90 with respect to the closure cap 7

70.1

Indicator light on the sealing cap 7.1

72

Indicator light on the removal handle 40 indicates the status of the anesthetic component 90 with respect to the receptacle 60, 60.1

72.1

Indicator light on the removal handle 40.1 indicates the status of the anesthetic component 90.1 with regard to the receptacle 60.1, 60

73

Status display on the removal handle 40 shows the current position of the removal handle 40

73.1

Status display on the removal handle 40.1 shows the current position of the removal handle 40.1

80

upper closure element above the anesthetic tank 5, makes it possible to drain gas from the anesthetic tank 5

81

lower closure element below the anesthetic tank 5, allows liquid to be drained from the anesthetic tank 5

90

Anesthetic component, comprising the anesthetic dispenser 3, the anesthetic tank 5, the supply line 10, the closure 7, a locking device, the unlocking lever 41 and the removal handle 40, can be inserted into a receptacle 60, 60.1 of the ventilator 1

90.1

Another anesthetic component, includes an anesthetic dispenser 3.1, the anesthetic tank 5.1, the supply line 10.1, the closure 7.1, a locking device, the unlocking lever 41.1 and the removal handle 40.1, can be inserted into a receptacle 60.1, 60 of the ventilator 1

100

Supply arrangement, provides a gas mixture comprising a carrier gas with oxygen and an anesthetic for the ventilator 1, comprises at least one anesthetic component 90 and the carrier gas mixer 9, belongs to the anesthetic system 200

200

Anesthesia system includes the supply arrangement 100 and the ventilator 1

D

Central axis, which is also the axis of rotation of the closure cap 7

HE

Removal direction in which the anesthetic component 90 can be removed from the receptacle 60

FR

Release direction in which the removal handle 40 can be pulled

P

Patient who is artificially ventilated by the ventilator 1 connected to the coupling unit 2 on the patient side

pf

Direction in which the unlocking lever 41 can be rotated about the axis 42 in order to move it against the force of the compression spring 43 into the unlocked position

W

Wall in which the supply connection 12 and the compressed air connection 11 is embedded

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• DE 4108383 A1 [0006]
• US20200238043A1 [0007]

Claims (17)

Anesthesia system (200) for anesthetizing a patient (P), the anesthesia system (200) - at least one anesthetic component (90, 90.1), - at least one recording (60, 60.1) and - At least one locking device comprises, wherein the or each anesthetic component (90, 90.1) respectively - Used or used in the or a recording (60, 60.1) and - Can be removed from the receptacle (60, 60.1), the or each anesthetic component (90, 90.1) respectively - an anesthetic dispenser (3), - an anesthetic tank (5, 5.1) for holding an anesthetic, - A supply line (10, 10.1) to the anesthetic tank (5, 5.1) and - includes a closure (7, 7.1) for the feed line (10, 10.1), wherein the or each anesthetic dispenser (3, 3.1) is designed to feed anesthetic from the anesthetic tank (5, 5.1) of the anesthetic component (90, 90.1) into a carrier gas, wherein the closure (7, 7.1) for the respective anesthetic tank (10, 10.1) of the or each anesthetic component (90, 90.1) - is movable back and forth between an open and a closed position, - In the open position, the supply line (10, 10.1) releases and - in the closed position, it prevents anesthetic from escaping through the supply line (10, 10.1), the anesthetic system (200) being designed for this purpose when the or at least one anesthetic component (90, 90.1) enters the or one receptacle (60, 60.1) is used in each case to provide a gas mixture comprising oxygen and at least one anesthetic for anesthetizing the patient (P), wherein the or at least one, preferably each anesthetic component (90) is assigned the or respectively one locking device, wherein the or at least one, preferably each locking device comprises a closure locking lever (31) and a removal locking lever (32), each of the two locking levers (31, 32) being movable back and forth between a locking position and a release position, wherein the locking device assigned to an anesthetic component (90) is designed such that when the anesthetic component (90) is inserted into the or a receptacle (60), - when the closure locking lever (31) is in the locking position, the locking device locks the closure (7) of the anesthetic component (90) in the closed position, - when the removal locking lever (32) is in the locking position, the locking device blocks removal of the anesthetic component (90) from the receptacle (60), - when the breech blocking lever (31) is in the release position, the locking device enables movement of the breech (7), and - When the removal locking lever (32) is in the release position, the locking device releases removal of the anesthetic component (90) from the receptacle (60). Anesthetic System (200) after claim 1 , characterized in that the closure locking lever (31) and the removal locking lever (32) are firmly connected to each other in such a way that they together form a total locking lever (24), the total locking lever (24) between a locking Position and a release position is movable, in particular rotatable or linearly displaceable, wherein when the overall locking lever (24) is in the locked position, - the closure locking lever (31) the closure (7) in the closed Position locked and - the unlocking locking lever (32) blocks a removal of the anesthetic component (90) from the receptacle (60) and wherein when the total locking lever (24) is in the release position, - the closure Locking lever (31) releases movement of the closure (7) into the open position and - the removal locking lever (32) releases removal of the anesthetic component (90) from the receptacle (60). Anesthetic System (200) after claim 2 , characterized in that the or at least one locking device comprises an axis (30), wherein the overall locking lever (24) between the locking position and the release position is rotatable about the axis (30) and wherein preferably the axis (30) divides the total lock lever (24) into the lock lock lever (31) and the removal lock lever (32). Anesthetic System (200) after claim 1 , characterized in that the closure locking lever (31) and the removal locking lever (32) can be moved back and forth independently of one another into a locking position and into a release position and preferably independently of one another about two axes (30.1 , 30.2) are rotatable. Anesthesia system (200) according to one of the preceding claims, characterized in that the or at least one locking device comprises an unlocking lever (41), the unlocking lever (41) being between a locking position and an unlocking position can be moved back and forth, the unlocking lever (41) - blocking removal of the associated anesthetic component (90) from the receptacle (60) in the locking position and - blocking removal of the associated anesthetic component (90) in the unlocked position Component (90) from the receptacle (60) releases and wherein the removal locking lever (32) of the locking device - holds the unlocking lever (41) in the locking position in the locking position and - in the release position releases the unlocking lever (41). Anesthetic System (200) after claim 5 , characterized in that the or at least one locking device comprises, in addition to the unlocking lever (41), a movably mounted removal handle (40), the removal handle (40) being mechanically connected to the unlocking lever (41) in such a way that movement of the removal handle (40) in a release direction (FR) causes the unlocking lever (41) to be moved from the locking position to the unlocking position, and the removal locking lever (32) - in the Locking position blocks a movement of the removal handle (40) in the release direction (FR) and - in the release position, a movement of the removal handle (40) in the release direction (FR) releases. Anesthetic System (200) after claim 5 or claim 6 , characterized in that the unlocking lever (41) can be moved into the unlocking position both when the removal handle (40) is released and when it is blocked. Anesthesia system (200) according to one of the preceding claims, characterized in that the anesthesia system (200) is designed to detect a release user input, resulting in a release of the closure (7) of the or at least one anesthesia component (90) is desired, and the anesthetic dispenser (3) of this anesthetic component (90) can be operated in a feed state in which the anesthetic dispenser (3) is able to feed in anesthetic, wherein during operation in the feed state in the anesthetic tank (5 ) of this anesthetic component (90) there is an overpressure relative to the ambient pressure, the anesthetic component (90) being designed to lower the overpressure in the anesthetic tank (5), and the anesthetic system (200) - being designed for this , upon detection of the enabling user input, to cause the anesthetic component (90) to lower the overpressure, and - is configured such that the Ve Connection locking lever (31) of the anesthetic component (90) is in the locked position while the overpressure is lowered. Anesthetic System (200) after claim 8 , characterized in that the anesthetic component (90) comprises a display unit (70), the display unit (70) being designed to indicate in a manner perceptible by a human in which of the following states the anesthetic component (90 ) is currently: - unlock user input detected, lock lock lever (31) in the locked position or in an intermediate position, - lock lock lever (31) in the unlock position, - no unlock user input detected, lock Locking lever (31) in the locked position. Anesthetic system (200) according to one of the preceding claims, characterized in that the anesthetic system (200) for the or at least one locking device comprises a controllable actuator (33, 33.1, 33.2), the or one actuator (33 , 33.1) is designed to move the locking lever (31) of the associated locking device from the release position to the locking position after a corresponding activation, and/or wherein the or an actuating drive (33, 33.2) is used for this is designed to move the removal locking lever (32) of the associated locking device from the release position to the locking position after a corresponding control. Anesthetic System (200) after claim 10 , characterized in that the anesthetic system (200) comprises a closure sensor (36) for at least one anesthetic component (90), the closure sensor (36) being designed to detect whether the closure (7) the anesthetic component (90) in the closed position tion is or not, and wherein the anesthetic system (200) is designed to, when it is detected that the closure (7) is not in the closed position, the actuator (33, 33.1) to automatically control so that the controlled actuator (33) moves the closure locking lever (31) into the locked position and / or holds it in the locked position. Anesthetic System (200) after claim 10 or claim 11 , characterized in that the anesthetic dispenser (3) of the or at least one anesthetic component (90) - can be operated in a feed state and - can be converted into at least one other state, with the anesthetic dispenser (3) feeding in anesthetic in the feed state is capable of, the anesthetic system (200) being designed to automatically control the or an actuator (33, 33.2) when the anesthetic dispenser (3) is operated in the infeed state in such a way that the controlled actuator (33, 33.2 ) moves the removal locking lever (32) to the locked position and/or holds it in the locked position. Anesthetic System (200) after claim 12 , characterized in that the or another state of the anesthetic dispenser (3) is an initialization state, the anesthetic dispenser (3) being temporarily in the initialization state before operation in the feed state, in particular putting itself into the initialization state , when the anesthetic component (90) has been inserted into the receptacle (60), and wherein the anesthetic system (200) is designed to do so, when the anesthetic dispenser (3) is in the initialization state, the actuator (33 , 33.2) to be activated automatically in such a way that the activated actuator (33, 33.2) moves the removal locking lever (32) into the locking position and/or holds it in the locking position. Anesthesia system (200) according to one of the preceding claims, characterized in that the or a locking device which is assigned to the or an anesthesia component (90, 90.1) is a component of this anesthesia component (90, 90.1). . Anesthesia system (200) according to one of the preceding claims, characterized in that the anesthesia system (200) comprises a medical device, in particular a respirator (1), the medical device (1) having the or each receptacle (60, 60.1), wherein preferably the medical device (1) comprises the or each locking device and wherein the medical device (1) is designed to provide a quantity of a gas mixture generated by the anesthetic dispenser (3) for a patient (P), preferably to promote the patient (P). Anesthetic component (90, 90.1) for anesthetizing a patient (P), the anesthetic component (90, 90.1) - an anesthetic dispenser (3), - an anesthetic tank (5, 5.1) for receiving an anesthetic, - a feed line ( 10, 10.1) to the anesthetic tank (5, 5.1), - a closure (7,7.1) for the supply line (10, 10.1) and - a locking device, the anesthetic dispenser (3, 3.1) being designed to dispense anesthetic the anesthetic tank (5, 5.1) into a carrier gas, wherein the anesthetic component (90, 90.1) - is inserted or can be used in a receptacle (60, 60.1) of an anesthetic system (200) and - from the receptacle (60, 60.1 ) is removable, wherein the anesthetic component (90, 90.1) is designed to provide a gas mixture comprising oxygen and at least one anesthetic to anesthetize the patient (P), the closure (7, 7.1) for the anesthetic tank (10, 10.1 ) - between egg can be moved back and forth between an open and a closed position, - in the open position the supply line (10, 10.1) is released and - in the closed position it prevents anesthetic from escaping through the supply line (10, 10.1), the locking Device comprises a closure locking lever (31) and a removal locking lever (32), each of the two locking levers (31, 32) being movable back and forth between a locking position and a release position, the locking device is designed in such a way that when the anesthetic component (90) is inserted into the receptacle (60), - when the lock locking lever (31) is in the locking position, the locking device locks the lock (7 ) of the anesthetic component (90) locked in the closed position, - when the removal locking lever (32) is in the locked position, the locking device allows removal of the anesthetic component (90) blocked from the recording (60), - then when the closure locking lever (31) in the release position, the locking device releases movement of the closure (7) and - when the removal locking lever (32) is in the release position, the locking device releases the anesthetic component (90) from being removed the recording (60) releases. Procedure for anesthetizing a patient (P), the method being carried out using an anesthetic system (200), wherein the anesthetic system (200) - at least one anesthetic component (90, 90.1), - at least one recording (60, 60.1) and - includes at least one locking device, wherein the or each anesthetic component (90, 90.1) respectively - an anesthetic dispenser (3), - an anesthetic tank (5, 5.1) for holding an anesthetic, - A supply line (10, 10.1) to the anesthetic tank (5, 5.1) and - includes a closure (7.7.1) for the supply line (10, 10.1), wherein the or at least one, preferably each anesthetic component (90) is assigned the or respectively one locking device, the or each locking device comprising a closure locking lever (31) and a removal locking lever (32), the method comprising the steps of - the or at least one anesthetic component (90, 90.1) or a receptacle (60, 60.1) is used, - the respective closure (7) of the or each anesthetic component (90) used is in a closed position or is moved into the closed position and in the closed position prevents anesthetic from escaping through the supply line (10, 10.1), - the anesthetic dispenser (3, 3.1) of the or at least one used anesthetic component (90, 90.1) feeds anesthetic from the anesthetic tank (5, 5.1) of this anesthetic component (90, 90.1) into a carrier gas and - a gas mixture comprising oxygen and at least one anesthetic for anesthetizing the patient (P) is provided, the method after the step of inserting the or an anesthetic component (90) using that locking device which the anesthetic component used (90) is assigned the steps to be performed that - the removal locking lever (32) of the locking device is moved into a locking position and the locking device now blocks removal of the anesthetic component (90) from the receptacle (60) and - the closure locking lever (31) of the locking device is moved to a locking position and the locking device now locks the closure (7) in the closed position, and wherein the method comprises at least one of the further steps following Providing the gas mixture are carried out that - the removal locking lever (32) of this locking device is moved into a release position and the anesthetic component (90) is removed from the receptacle (60) and/or - the lock locking lever (31) of this locking device is moved to a release position and the lock (7) is moved to an open position and now the feed line (10) is released.

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