WO2019008139A1

WO2019008139A1 - Device for removing particles from the pharynx and respiratory tracts

Info

Publication number: WO2019008139A1
Application number: PCT/EP2018/068377
Authority: WO
Inventors: Sigrid BRINKMANN; Josef Engelhardt
Original assignee: Domma & Marx Gbr
Priority date: 2017-07-07
Filing date: 2018-07-06
Publication date: 2019-01-10
Also published as: DE102017115283A1

Abstract

The invention relates to a device for removing particles from the pharynx of an organism and/or the respiratory tracts adjoining the pharynx, having a mask part (100) and a negative pressure providing part (110). The mask part (100) can be placed on a facial part of the organism containing the mouth and/or the nose. The negative pressure providing part (110) has a negative pressure in the interior or is designed such that a negative pressure can be built up in the interior of the part and can additionally be coupled to the mask part (100) such that the negative pressure of the negative pressure providing part (110) can be applied to the interior of the mask part (100). The device according to the invention is designed such that when used, the application of the negative pressure of the negative pressure providing part (110) to the mask part (100) is initiated by coupling the negative pressure providing part (110) to the mask part (100) such that in order apply the negative pressure of the negative pressure providing part (110) to the mask part (100), the negative pressure providing part (110) is moved in the direction of the mask part (100) so as to be coupled thereto.

Description

Device for removing particles from the throat and respiratory tract

In everyday life, it is not uncommon that you swallowed while eating and a

Food particles get stuck in the throat. From such a supposedly harmless situation, however, is an often underestimated risk of suffocation, especially for children. The latter are children, especially in the early development phase generally with regard to a possible Erstickungsgefahr considered endangered, as they introduce objects such as toy figures, marbles or nuts and generally new and thus unknown to them objects for the purpose of their exploration in the oral cavity. These objects or parts thereof, however, can get out of the oral cavity into the trachea at any time and depending on the shape and size block the airway completely or partially. As a result, there may be shortness of breath and a supposedly harmless situation can escalate within seconds to a life-threatening danger that can end with suffocation at worst.

When symptoms of asphyxiation begin, whether in children or adults, the first countermeasure is usually performed very intuitively by the affected person himself in the form of severe coughing. If this does not help, the person concerned is usually dependent on the help of third parties. In the simplest form of first aid, the affected person is usually given some flat strokes between the shoulder blades with the palm of his hand to release the object in the airway. In general, but especially in infants, this measure can also be coupled with a horizontal upper body position.

Although this simple classic knocking between the shoulders has not helped, the use of the Heimlich handle as a continuing first aid measure is inevitable. However, the application of this special grip requires basic knowledge of its mode of exercise and is not completely risk-free, especially when exercised by laymen for the first time, as a panic-like and / or improper use of the grip by excessive and / or misplaced pressure can injure internal organs.

If, however, none of the above measures leads to success and the airway of the person concerned remains blocked by a foreign body stuck in it, the emergency doctor is called at the latest. However, valuable time passes by until it arrives. The brain will drain for about 3-5 minutes without oxygen, without any permanent damage. Often, however, the ambulance service does not manage to reach the location within this short time. If by then neither coughing, the back-knock method or the Heimlich handle have helped and the ambulance has not yet arrived, the remains

Affected and those present only unbearable waiting and helpless watching. The danger of asphyxiation was recognized early on and so today there are various devices that should perform a targeted removal of foreign bodies from the respiratory tract of the person concerned. All of these devices have the common feature that they produce a negative pressure, which is transmitted to the mouth / throat of the person concerned, usually by means of a nose and mouth nose mask. The pressure difference generates a suction force, which acts on the foreign body and should carry him out of the airways.

As an example, mention may be made of the device known from international publication WO 2015 167709 A1, which is marketed under the product name LifeVac. This has a bellows with a handle which on the opposite side of the handle with a

Face mask is coupled. In the application, the face mask is first placed on the mouth of the suffocation victim, including the nose. Then the handle on the bellows is pushed towards the mask or mouth of the suffocation victim to compress the bellows. During this process, the air in the bellows is displaced from it through a valve to the outside. Subsequently, the handle is suddenly pulled in the opposite direction, ie away from the face and the mask to unfold the bellows again, wherein the open in the previous phase valve is closed nu n. By pulling apart the bellows creates a negative pressure in its interior, which acts through the mask on the respiratory tract of Erstickungsopfers. The negative pressure creates a suction that acts on the stuck foreign body and this is to carry out of the airways.

Although this device is not a complex device, it may still cause problems in its application. The execution of the chain of action from putting the mask on the face, compressing the bellows and then pulling the bellows apart may prove to be difficult, as an air-borne suffocation victim often performs uncontrolled movements of the head. In addition, the negative pressure is by a

Pulling apart of the flexible, in particular to the sides flexible bellows produced, wherein the force to be exerted on the handle facing away from the mask and the face of Erstickungsopfers. Therefore, the moment the handle is pulled jerkily backwards, the mask must be pressed against the face so that it fully rests on the face and optimally no leaks are formed between it and the face. Removal of the mask from the face would result in a pressure increase inside the device and would counteract the intentional negative pressure generation. By a reduced negative pressure inside the device but a lower suction force is exerted on the foreign body, which can ultimately thwart the attempt to remove it.

Furthermore, other devices for removing foreign bodies from the respiratory tract are known. From the international publication WO 99/02203, for example, a Device is known, which has a vacuum container. In the case of use, one end of a connecting tube, the other of which is coupled to a mask, is coupled to an evacuated container. In this way, the mouth and throat of Erstickungsopfers is subjected to a negative pressure, which exerts a suction effect on the stuck in the airways foreign body. By contrast, US Pat. No. 8,876,838 discloses a device which includes a Venturi vacuum pump, a container with a compressed fluid and a mask. After using the device, the mask over the nose and mouth of the

Asphyxiation victim is placed, a flow of compressed fluid from the container through the Venturi vacuum pump is brought about, creating a negative pressure area in the mask and, correspondingly, in the airways of Erstickungsopfers.

Against this background, the object of the invention to provide a device for removing a foreign body or particle from the respiratory tract of a living being, preferably a person, which is easy, especially in mentally troublesome first aid situations and without previous medical knowledge, and reliably applicable ,

The object of the present invention is achieved by a device for removing particles from the throat and / or the adjoining airways of a

Living thing, which essentially comprises a mask part and a negative pressure supply part, which are hereinafter also referred to as main parts. The mask part is placed on a mouth and / or nose-containing facial part of the living being. The negative pressure supply part has a negative pressure in the interior or is arranged so that a negative pressure can be built up in its interior, and is further coupled to the mask part such that the inside of the mask part can be acted upon by the negative pressure of the negative pressure supply part. The device according to the invention is set up in such a way that, in the application, the loading of the mask part with the negative pressure of the mask

Negative pressure supply part is triggered by coupling the negative pressure supply part to the mask part, so that is moved to act on the mask part with the negative pressure of the negative pressure supply part of the negative pressure supply member in the direction of the mask part to be coupled.

The present device was developed for use in emergencies and it was paid particular attention to interpret the operation so that improper handling can almost certainly be ruled out. As one

Improper handling can be considered as the case in which the mask of a generic device for removing particles from the throat and / or the adjoining airways at the moment of vacuum generation for the purpose of removing the foreign particle is not optimally rests on the face and thus pressure losses occur Which reduce the suction force applied to the foreign body. It was therefore considered to be extremely important that in the device according to the invention the space, which from vacuum supply part, mask, the mouth or throat and the adjoining airways at the moment of application is sealed airtight to the environment. The operation of the present device is based on this maxim.

While in the prior art, for example the device sold under the name LifeVac, a force is exerted on the device at the moment of the generation of the negative pressure, which points away from the face of the suffocating victim and thus fundamentally leads to detachment of the mask from the face. As in the case of the device known from US Pat. No. 8,876,838, a triggering mechanism is actuated, which is an operation independent of the mask being put on the face. In this point, the present invention differs entirely from the prior art in that in the case of application (ie, when the respiratory delivery device of a suffocation victim is used), the negative pressure supply member must be coupled to the mask member to allow the mask member to be pressurized with the negative pressure Cause negative pressure supply part. At the moment of the pulse-like release of the negative pressure, therefore, the mask is additionally pressed on the face of Erstickungsopfers. This additional, the tight fit of the mask on the face ensuring force is inherently anchored in the operation of the device according to the invention. In other words, the device is set up such that the application of the mask part to the negative pressure of the negative pressure supply part is unavoidable

Coupling of the vacuum supply part is connected in the mask part and the

The coupling process itself inherently presupposes a force component which acts essentially in the direction of the mask part or in the direction of the face. Differently disengaged, the coupling operation of the negative pressure supplying part into the mask part causes the force applied thereto to the negative pressure supplying part to be transmitted to the mask part, resulting in a uniformly distributed to the edge of the mask part pressing pressure of the mask part on the face. The force to be applied to the vacuum supplying part for the coupling operation is oriented so as to be substantially free of lateral force components with respect to the mask part resting on the person's face, which would cause the mask part to be displaced on the face. The linkage of the invention

Underpressure supply with a defined direction of the force exerted on the device (by the user of the device) is thus reflected in the technical design of the device.

The present invention can be used for removing particles or foreign bodies of any kind from the throat and / or the adjoining airways of a living being and is therefore especially designed for use in humans. In particular, it can be used to remove particles from the region of the trachea. However, the device is also just as good for removing particles from the esophagus, as well as particles stuck there can cause the patient concerned great discomfort.

The mask part can be an ordinary mask which, for example, corresponds to a conventional mask used in the medical field for the ventilation of patients. The mask part may have an opening for forming the mechanical connection to the vacuum supply part. This opening, to which the vacuum supply part can be inserted airtight, may be formed close to the mask body. On the one hand, to eliminate the possibility of the formation of rotational or bending moments in the coupling process, and on the other to the insertion of the vacuum supply part in the

Facilitate mask part, since then the target surface for the coupling of the vacuum supply part with a small movement in the head of Erstickungsopfers

Angular velocity moves. In addition, a compact design is generally desirable in order not to confront the Erstickungsopfer in the application with a large and threatening acting equipment.

The negative pressure supply part can, as the name implies, be a part which provides a negative pressure in the application. On the one hand, therefore, the negative pressure can already be constructed in the negative pressure supply part, for example in a corresponding container, which is acted upon by a negative pressure and is initially sealed airtight. In other words, the vacuum supply part may already be evacuated prior to use of the device and without prior interaction with the user. The

Vacuum supply part can be designed so that it can be used as an interchangeable module in him the vacuum applied to the container. This allows the container to be exchanged for a "fresh" container after application of the device in which the negative pressure is relieved In addition, the containers may be of different sizes and / or have different degrees of negative pressure, so as to create the suction effect on the anatomy Alternatively, the negative pressure supply member may be arranged to provide a negative pressure inside it, if necessary, the negative pressure supply member may comprise a pumping device which can be actuated by the user prior to application of the device to one coupled to the pumping device To evacuate containers to a predetermined degree

Vacuum supply part may then additionally have a display, which indicates the achievement of at least one desired value of the negative pressure during pumping. The system off

Pumping device And the associated container can be designed so that the appropriate negative pressure in the container is achieved by a well-defined small number of actuations of the pumping device, optionally the number may vary case-based different. For example, for a toddler, two pumping movements may be required, while for a stocky adult, three pumping movements may be required.

Regardless of the actual configuration of the vacuum supply part, the device according to the invention is characterized in that the vacuum supply part has no trigger switch or release button, which is operated directly by the user to open as a valve or a flap on the vacuum supply part and thus one

To create pressure equalization between the interior of the vacuum supply part and its environment. As already mentioned, the device according to the invention is characterized in that the loading of the mask part with the negative pressure of the negative pressure supply part takes place automatically when coupling the negative pressure supply part to the mask part. Consequently, to apply the mask part to the negative pressure of the negative pressure supply part, a relative movement between the mask part and the negative pressure supply part takes place. Spoken in the figurative sense, the device is designed so that the mechanical interface between the two main components mask part and vacuum supply part works according to the key-lock principle and activating or "switching on" the device (ie, loading of the mask part with the negative pressure) at the moment of the coupling In particular, the device according to the invention has no switch or pushbutton which triggers the pulse-like suction effect by direct actuation by the user, rather the triggering of the pulse-like suction effect takes place by deliberately coupling the one main component into the other mentions a configuration in which a valve is arranged on the vacuum supply part and on the mask part a pin which opens the valve when the two main components are coupled in. In particular, the movable, the S flow path from the vacuum supply part closing part of the valve may be arranged in a recess so that it can not be opened by the user readily, such as without the use of a pen-like object, and thus definitely not as directly operable element in the sense of a button or a button for the user can be seen.

Although the description assumes that, for applying the mask part to the negative pressure of the negative pressure supplying part, the negative pressure supplying part is moved toward the mask part to be coupled therewith, in principle, the mask part can also be moved to and coupled to the negative pressure supplying part. In general, the coupling process triggering the release of negative pressure is based on a relative movement between the two main parts, in which one main part is on or in the other main part plugged / coupled. However, since in the case of application, for example with one hand first the mask part can be positioned on the face of Erstickungsopfers and in the other hand, the vacuum part is moved to the mask part, it is suitably spoken of that is moved in the application of the vacuum supply part in the direction of the mask part. However, the preferred scenario chosen for the description is not to be seen as a component restriction, but is based strongly on the way in which the

inventive device is used.

In this context, it should also be noted that embodiments of the device according to the invention are also provided, in which both main parts are mechanically connected to each other, for example in the region of the interface between the two main parts. However, this mechanical connection can be designed so that they

Force application yields and allows a relative movement between the two main parts. For example, such a mechanical connection may be formed by means of material webs, which function as predetermined breaking points. By placing the mask part on the face and exerting a pressure on the vacuum supply part, these material webs can break and enable coupling of the vacuum supply part into the mask part. The material webs can be, for example, on a replaceable insertable cuff, in which one side of one of the main parts is inserted. The yielding mechanical connection can also be formed from an elastic material which can be compressed by the action of force, thereby enabling coupling of the negative pressure supply part into the mask part. The basic operating principle of the device according to the invention is in such

Embodiments in which the two main parts are attached to each other, but not yet coupled airtight, not changed. However, such embodiments may be advantageous in that the use of the device according to the invention can in principle be done with one hand or at least simplified, since placement of the attached to the vacuum supply part mask part can be done with one hand, which holds the vacuum supply part and this after placing the mask part jerky shortly coupled into the mask part. The mechanical connection can be seen here as a virtual "helping hand", which holds the vacuum supply part already in the correct position / orientation at a small distance (eg a few millimeters to 1 centimeter) to the mask part, so that the vacuum supply part only briefly jerky in the mask part must be coupled in order to effect the airtight connection between the two main parts.

According to further embodiments of the invention, the device may be configured such that, in the case of application, the negative pressure supply part along an operating axis is applied to the mask part with the negative pressure of the negative pressure supply part is coupled to the facial part lying on the mask part, wherein the operating axis is substantially normal to the face part covered by the mask part. Under the operating axis may be meant an imaginary axis, along which the

Vacuum supply part is moved to the mask part to couple it to the mask part. In particular, the operating axis can also correspond to the axis along which the coupling process takes place between the two main parts. Under a normal to that of

Mask part covered facial part may be meant a straight line, which is formed on the basis of a surface around the mouth, in which anatomically caused bumps are smoothed and in particular the nose part is omitted in the viewing. The normal to the facial part covered by the mask part may correspond to a straight line that runs generally through the middle of the lip boundary in the closed state of the mouth and with straight alignment of the head the longitudinal axis of the human body (also referred to as craniocaudal axis) in about a 90 ° Angle intersects. For effecting a coupling and the application of the

Mask part with the negative pressure from the vacuum supply part so the latter can be moved along the thus defined normal, ie frontally on the face, and be set in a linearly continuing this movement in or on the mask part.

According to a further embodiment of the invention, the device can be set up in such a way that, for acting on the mask part with the negative pressure of the

In the application case, the negative pressure supply part is coupled to the mask part lying on the face part along an operating axis, the operating axis being substantially perpendicular to a surface defined by the edge of the mask part with which the mask part rests on the face part. This can be achieved that the mask part is moved evenly on the underlying face part. Thus, an improved tightness can be achieved and the risk of unwanted pressure reduction by the ingress of air by not properly resting on the face edge portions of the mask portion in the case of triggering the device can be prevented or at least significantly reduced.

According to a further embodiment of the invention, the device can be configured such that for acting on the mask part with the negative pressure of

In the case of application, the negative pressure supply part is coupled along an operating axis to the mask part lying on the face part, wherein the operating axis substantially corresponds to an axis of action, along which in the application between the mask part and the negative pressure supply part by the negative pressure

Air flow is generated. In other words, such embodiments may be a straight airtight fluid connection, for example in the form of a pipe joint, between mask part and Have negative pressure supply part, wherein one part of this fluid connection is formed on each one of the main parts.

In general, the connection piece having a connection opening attached to the mask part for coupling the negative pressure supply part may be arranged on the mask part such that the connection opening is arranged as close to the mouth as possible, for example in a plan view of the mask part over the mouth.

According to a further embodiment of the invention, the mask part a

Sealing device, for example, a sealing lip made of any flexible and air-impermeable material, which along along the contact surface of the mask part with the

Face part is arranged. The sealing device can be arranged along the edge of the mask part with which the mask part in the application on the face part of the

Suffocation victim rests. The sealing device has the task of compensating for the presence of the mask part on the face bumps and thus form an airtight connection between the mask part and the face part covered by it.

According to a further embodiment of the invention, the device may be configured such that in the application between an inlet on the vacuum supply part and an outlet on the mask part between these two a substantially rectilinear, in particular deflection-free air flow is formed. The terms inlet (am

Vacuum supply part) and outlet (on the mask part) describe openings through which air can flow in the application, the choice of terms being determined by the direction of the air flow in the application. Between the outlet on the mask part and the inlet on the

Vacuum supply part may be provided in airtight coupled state of the device, a straight air path. The formation of a substantially rectilinear, in particular deflection-free air flow between the outlet on the mask part and inlet on

Vacuum supply part is made with a view to averaging flow vectors over the cross section of the connection between the main parts. Possibly arranged in the flow path objects, such as parts of a valve, which are flowed around locally, should be disregarded.

According to a further embodiment, the device may comprise a valve which is arranged such that, when coupling the vacuum supply part to the mask part, a closure part of the valve is displaced from a first position to a second position. By the displacement of the closure part, an opening of the valve is effected, with the result that the negative pressure prevailing in the negative pressure supply part transmits to the mask part and thus to the mouth and the respiratory tract of Erstickungsopfers. Conveniently, the closure part can be arranged on the vacuum supply part, for example in one Adapter piece. The corresponding adjusting part, which causes the displacement of the closure part when the main parts are coupled together, may expediently be arranged on the mask part, for example in a further adapter piece. The adapter piece and the further adapter piece can be designed as corresponding adapter pieces, that is, for the formation of a coupling between the two main parts.

In a further embodiment of the invention, the device can have a valve which is set up in such a way that a membrane is perforated when the negative pressure supply part is coupled to the mask part. The valve can therefore be set up as a disposable device for regulation, in this case shut-off, of the flow path from the vacuum supply part, that after its single use can not be reused. In embodiments of this kind, if necessary, a repeated use of the device, a new intact perforation valve with an intact membrane to the

Vacuum supply part to be installed.

In a further embodiment of the invention, the negative pressure supply part may comprise a hand-operated pump device. Here, the negative pressure supplying part may have a pressure indication (e.g., color-coded) indicating when a sufficiently high one

Vacuum has been built in the vacuum supply part. Alternatively, the pumping device and the vacuum-carrying chamber may be tuned to each other such that a predetermined number of pumping operations are required to build up a vacuum having a pressure appropriate to the application. The negative pressure supply part may further comprise a negative pressure valve, which allows evacuation of the negative pressure chamber to be acted on inside the negative pressure supply part only up to a predetermined value.

According to a further embodiment of the invention, the

Vacuum supply part alternatively have a motor-driven pumping device.

According to a further embodiment of the invention, the device may be configured such that the application of the mask part to the negative pressure of the mask part

Underpressure supply part in the application by the action of a force on the

Negative pressure supply part is triggered, which points in the direction of the mask part covered by the face part.

Further details, features and advantages of the invention will become apparent from the

Drawings and from the following description of preferred embodiments with reference to the drawings. The drawings illustrate only exemplary

Embodiments of the invention, which does not reflect the essential inventive idea

limit. 1 shows a schematic representation of the device for removing particles from the throat and / or the adjoining airways.

In FIGS. 2A-2D an embodiment of the device according to the invention is shown in different views.

FIG. 3 shows a further embodiment of the device according to the invention.

FIG. 1 shows a schematic representation of the device according to the invention, which has the two main components mask part 100 and vacuum supply part 110. The mask part 100 may have a sealing device 104, for example in the form of a circumferential sealing lip, which in the case of use serves to seal the contact surface between the face of the suffocation victim and the mask part arranged thereon. The mask part 100 may, for example, correspond to a mask which is used in mask ventilation in anesthetics, intensive care and emergency medicine. The mask part 100 has a first adapter piece 102, which on the one hand has an opening to the interior of the mask part 100 and, on the other hand, is designed to fit a second adapter piece 112, which is arranged on the vacuum supply part 100. The first adapter piece 102 and the second adapter piece 112 may be configured to form a mechanically stable and airtight non-positive connection. The second adapter piece 112 has a valve element and is designed such that it can be inserted at least partially into the first adapter piece 102. In Figure 1, an axis is additionally shown, which corresponds to the operating axis 130. As already explained, the coupling of the negative pressure supply part 110 into the mask part 100 takes place along the control axis 130. In a preferred embodiment, as indicated in FIG. 1, the control axis 130 may be substantially normal to the area for which the sealing device 104 is the peripheral line forms. The coupling of the

Vacuum supply part 110 in the mask part 100 required force, which ultimately causes the loading of the mask member 100 with the negative pressure of the vacuum supply part 110, acts along the control axis 130. In a common application scenario, the force is first by the user along the control axis 130 on the housing of the

Negative pressure supply part 110 transferred in the direction of the mask part 100. The operating axis 130 shown in Figure 1 at the same time also corresponds to the axis of action, along which in the

Use case an air flow between the mask part 100 and vacuum supply part 110 is generated. The air flow generated by the vacuum is contrary to the force that is required for coupling the vacuum supply part 110 to the mask part 100.

FIGS. 2A-2D show an embodiment of the device according to the invention which is based on a manual vacuum supply part 110. The elements already described with reference to FIG 1 bear the same reference numerals and will not be explained again.

The negative pressure supply part 110 has a pressure container 114, which can be inflated by means of a manually operated pumping device 118. For this purpose, the

Pumping device 118 on a movable handle portion 116 for operating the pumping device 118. By moving the grip part 116, a piston inside the pump device 118 can be moved, whereby the pressure vessel 114 can be evacuated. Overall, the handle of the pump device 118 is designed such that the pumping of the pressure vessel 114 can be done with one hand and immediately after reaching the desired negative pressure of the

Vacuum supply part immediately and in particular maintaining the handle on the Mask part can be coupled. In other words, the device according to the invention is set up so that no change of handle or the addition of the second hand is required between the vacuum build-up and the coupling process of the vacuum supply part to the mask part.

As further shown in FIGS. 2A-2D, the first adapter piece 102 is formed at its end facing away from the mask part 100 as a socket for a part of the second adapter piece 112, so that the second adapter piece 112 is inserted or inserted in the first adapter piece 102 in the application can be. The second adapter piece 112 can be inserted to some extent in the first adapter piece 102, for example, up to a formed in the second adapter piece 112 projection 113 to the pulse-like

Release negative pressure in the vacuum supply part 110 trigger. Thereby, a mechanically stable and airtight connection between the main parts can be formed before the mask part 100 is subjected to the negative pressure. The inner wall of the part first

Adapter piece 102, which serves as a receptacle for the second adapter piece 112, may comprise a rubber-like material which provides the required airtightness. Overall, by means of various parameters such as, for example, choice of material, part diameter and / or structuring at the interface between the first adapter piece 102 and the second adapter piece 112 for effecting a complete coupling of the

Unterdruckbereitstellungssteils 110 in the mask part 100 and thus to trigger the

Vacuum be set in the application force required. At the same time can thus be adjusted in this way, with what pressure the mask portion 110 on the face of the

Suffocation victim is pressed before the valve is opened and the pulse-like suction effect is brought about. The position of the first adapter piece 102 on the mask part 100 does not have to correspond to the position shown in FIGS. 2A-2D. The first adapter piece 102 can also be offset further from its illustrated position to the center of the mask part 100, although it can be advantageous if the second adapter piece 102 is arranged centrally with respect to the lateral extent of the mask part 100.

In the perspective exploded view in Fig. 2C, the internal structure of the second adapter piece 112 is shown in more detail. Therein may be a valve 122 which can be opened by contact with a correspondingly shaped element of the first adapter piece 102. Between the second adapter piece 112 and the pressure vessel 114, an additional adapter piece part 120 may be arranged, wherein the valve 122 may be present enclosed between the second adapter piece 112 and the additional adapter piece part 120. The closure part of the valve 122 can be opened by a pin which is arranged in the first adapter piece 102.

Overall, the device of the invention is modular, which on the one hand facilitates their production and on the other hand allows easy replacement of parts. Thus, the pressure vessel 114 can be disconnected from the pumping device 118 as needed and replaced by another one. Also, the valve 122 can be removed by loosening the additional adapter piece 120 and the second adapter piece 112 from each other and replaced with a new one. This may be particularly advantageous if the device according to the invention has a membrane-based valve, in which the membrane is perforated in use.

FIG. 3 shows a modified form of the device according to the invention in that the negative pressure supply part 110 has an already negative pressure Pressure vessel is formed. Thus, no manual pumping of the pressure vessel is required in the application of the device. The already pressurized with a vacuum pressure vessel can be used as a disposable pressure vessel, so it must be disposed of after an application.

Claims

claims

Device for removing particles from the throat and / or the adjoining airways of a living being, comprising:

a mask part, which is placed on a mouth and / or nose containing facial part of the living being;

a negative pressure supply part which has a negative pressure in the interior or is arranged so that a negative pressure can be built up in its interior, and which can be coupled to the mask part such that the interior of the mask part with the

Negative pressure of the vacuum supply part can be acted upon;

wherein the device is arranged such that in the application, the loading of the mask part with the negative pressure of the negative pressure supply part by the

Coupling of the negative pressure supply part is triggered to the mask part, so that is moved to act on the mask part with the negative pressure of the negative pressure supply part of the negative pressure supply member in the direction of the mask part to be coupled.

Device according to claim 1, wherein the device is set up in such a way that, for application of the mask part to the negative pressure of the negative pressure supply part, the negative pressure supply part is coupled along an operating axis to the mask part resting on the face part, wherein the operating axis in

Substantially represents a normal to the facial part covered by the mask part.

Device according to claim 1 or 2, wherein the device is set up such that, for application of the mask part to the negative pressure of the vacuum supply part, the negative pressure supply part is coupled along an operating axis to the mask part lying on the face part, the operating axis in

Substantially perpendicular to a surface defined by the edge of the mask portion with which the mask portion rests on the face portion.

Device according to one of claims 1 to 3, wherein the device is arranged such that for acting on the mask part with the negative pressure of

In the case of application, the negative pressure supply part is coupled along an operating axis to the mask part lying on the face part, the operating axis essentially corresponding to an active axis along which in the Use case between the mask part and the vacuum supply part by the negative pressure, an air flow is generated.

5. Device according to one of claims 1 to 4, wherein the mask part a

Sealing device, for example, a sealing lip, which is arranged along its contact surface with the face part.

6. Device according to one of claims 1 to 5, wherein the device is arranged such that in the application between an inlet on the vacuum supply part and an outlet on the mask part between these two a substantially rectilinear, in particular deflection-free air flow is formed.

7. Device according to one of claims 1 to 6, wherein the device comprises a valve which is arranged such that when coupling the vacuum supply part to the mask part, a closure part of the valve is displaced from a first position to a second position.

8. Device according to one of claims 1 to 6, wherein the device comprises a valve which is arranged such that when coupling the negative pressure supply member to the mask member, a membrane is perforated.

9. The device according to one of claims 1 to 8, wherein the negative pressure supply part comprises a hand-operated pumping device.

10. The device according to one of claims 1 to 8, wherein the negative pressure supply part comprises a motor-driven pumping device.

11. Device according to one of claims 1 to 10, wherein the device is arranged such that the application of the mask part with the negative pressure of the

In the application case negative pressure supply part is triggered by the action of a force on the vacuum supply part, which points in the direction of the face part covered by the mask part.