Detection device, mask system and use of the detection device

Abstract

The present invention relates to a detection device (100) for detecting an air flow, respiratory air flow and / or respiratory gas flow from a face mask (110), the detection device (100) comprising a main body (120), at least one sensor device (130) and a coupling interface (140), wherein the at least one sensor device (130) is designed to detect the air flow, respiratory air flow and / or respiratory gas flow from the face mask (110), and wherein the coupling interface (140) is designed for releasable coupling of the main body (120) to the face mask (110). The invention also relates to a mask system (190) comprising a face mask (110) and a detection device (100) and to a use of the detection device (100) with a face mask (110).

Description

[0001] Detection device, mask system and use of the detection device

[0002] Description

[0003] The present invention relates to a detection device for detecting an air flow, respiratory air flow, and / or respiratory gas flow from a face mask. Furthermore, the invention relates to a mask system comprising a face mask and the detection device. The invention also relates to the use of the detection device with a face mask.

[0004] A variety of face masks are known, most of which provide the wearer with a breathing air stream. Depending on the use and application, the different mask systems include a supply of the breathing air stream from a supply source and / or tank devices and / or a filtering of an air stream from the environment.

[0005] The currently publicly known state-of-the-art mask systems generally do not include sensors for detecting and / or evaluating the flow of breathing air from a face mask.

[0006] Known mask systems in medical technology usually only have stationary sensors for detecting the inlet flow into a face mask. Known mask systems in the field of respiratory masks, such as those used by firefighters, mine workers, industrial personnel, and / or pilots, usually do not have any sensors for monitoring fluid flows, since healthy people are generally supplied with clean gases for breathing.

[0007] In particular, a retrofit solution for retrofitting known face masks with a detection device for detecting an air flow, respiratory air flow, and / or respiratory gas flow from a face mask is not known in the prior art. It is therefore an object of the present invention to eliminate, or at least partially eliminate, the above-described disadvantages of the prior art. In particular, it is an object of the invention to provide a detection device that enables detection of an air flow, respiratory air flow, and / or respiratory gas flow from a face mask in a particularly simple and advantageous manner. In particular, it is further an object of the invention to provide a mask system comprising a face mask and the detection device, as well as a use of the detection device with a face mask.

[0008] The above object is achieved by the patent claims. In particular, the object is achieved by a detection device for detecting an air flow, respiratory air flow, and / or respiratory gas flow from a face mask, having the features of independent claim 1. Furthermore, the object is achieved by a mask system comprising a face mask and the detection device, having the features of independent claim 12, and by using the detection device with a face mask, having the features of independent claim 13. Further advantages and details of the invention emerge from the subclaims, the description, and the drawings.Features that are described in connection with the detection device according to the invention naturally also apply in connection with the mask system according to the invention, the use according to the invention and vice versa, so that with regard to the disclosure of the individual aspects of the invention, reference is always made, or can be made, to each other.

[0009] According to a first aspect of the invention, the object is achieved by a detection device for detecting an air flow, respiratory air flow, and / or respiratory gas flow from a face mask. The detection device comprises a base body, at least one sensor device, and a coupling interface. The at least one sensor device is designed to detect the air flow, respiratory air flow, and / or respiratory gas flow from the face mask, and the coupling interface is designed for releasably coupling the base body to the face mask. The detection device according to the invention comprises at least one sensor device for detecting an air flow, a respiratory air flow, and / or a respiratory gas flow from a face mask.The detection of the air flow, respiratory air flow, and / or respiratory gas flow from a face mask is preferably understood as measuring a volume flow, a gas composition, and / or at least a gas component of the air flow, respiratory air flow, and / or respiratory gas flow from a face mask. The detection device preferably has a data interface for data communication with, for example, a logic unit and / or a server unit. The data communication connection is preferably wireless and / or wired. Additionally or alternatively, the detection device comprises a storage device for storing the detected data from the detection of an air flow, respiratory air flow, and / or respiratory gas flow from a face mask.

[0010] Within the scope of the invention, the base body is preferably designed as a housing. The sensor device is preferably arranged at least partially, in particular entirely, within the base body. Expiration of the air flow, respiratory air flow, and / or respiratory gas flow from a face mask preferably occurs through the base body and subsequently into the environment of the detection device. In other words, the base body preferably has an open outflow device, in particular at a free end of the base body, for the outflow of the detected air flow, respiratory air flow, and / or respiratory gas flow from the base body into the environment of the detection device.

[0011] The detection device according to the invention is preferably to be understood as a retrofit detection device. The detection device is designed via the coupling interface for the detachable coupling of the base body to the face mask. The detachable coupling is preferably to be understood as a tool-free detachable coupling. Known respiratory masks usually have interfaces for, for example, filter assemblies and / or supply tubes for inhalation. Additionally or alternatively, known respiratory masks usually have standardized expiration openings, interfaces, and / or valves, so that the detection device, in particular the coupling interface, can advantageously be adapted to known standards. Known respiratory masks usually have protective caps, for example to prevent the ingress of dust and / or water into the expiration openings. These protective caps can advantageously be replaced by the detection device according to the invention.Thus, the detection device preferably enables the detection of an air flow, respiratory air flow, and / or respiratory gas flow from a face mask and the physical protection according to the previously present protective caps in a single functional combination. Particularly preferably, the detection device is designed to be particularly lightweight to enable direct coupling to the face mask. For example, the detection device weighs less than 300 g, preferably less than 150 g. The detection device thus preferably enables as little intervention as possible in the existing systems while still providing low-resistance, expiratory flow measurement. The base body of the detection device preferably enables the required robustness for respiratory protection against, for example, media, temperatures, and / or mechanical stress, for example through an advantageous choice of material for the base body.

[0012] The detection device is preferably designed, via the coupling interface, for detachable and direct coupling of the base body to the face mask. In other words, the base body is preferably arranged and / or attached directly to the face mask via the coupling interface. The detection device preferably does not comprise any breathing tubes or, in other words, is preferably designed without a breathing tube. For example, the detection device is between 30 mm and 40 mm wide, between 40 mm and 50 mm long, and between 5 mm and 10 mm high. Due to the design of the base body and / or the direct coupling to the face mask, the detection device requires particularly little installation space and thus enables little or even no influence on the field of vision of the face mask user.A detection device configured in this way is particularly advantageous because it enables the detection of an air flow, respiratory air flow, and / or respiratory gas flow from a face mask particularly easily and advantageously. In particular, the detection device according to the invention enables advantageous retrofitting of the detection functionality to existing face masks thanks to the coupling interface.

[0013] The detection device is designed according to the invention such that the base body comprises a main flow channel and a bypass channel, wherein the at least one sensor device is arranged in the bypass channel. The sensor device in the bypass channel represents an advantageous embodiment, since the bypass channel enables a controlled measuring path for the sensor device and thus enables improved detection of the air flow, respiratory air flow, and / or respiratory gas flow from a face mask. The bypass channel preferably branches off from the main flow channel of the base body. The main flow channel preferably has a flow cross-section diameter of between 15 mm and 20 mm, preferably 18 mm, i.e., a flow cross-sectional area of ​​approximately 250 mm. 2The flow split ratio between the main flow channel and the bypass channel is preferably between 800:1 and 2500:1, preferably between 1000:1 and 2000:1. The bypass channel preferably has a diameter between 0.5 mm and 2 mm, preferably 1 mm, or a square cross-section of 1 mm x 1 mm. The bypass channel is preferably between 30 mm and 50 mm, preferably 40 mm, long.

[0014] Preferably, the main flow channel has a ratio of at least 40%, preferably at least 50%, to an expiration opening of the face mask. Thus, the majority of the flow preferably flows through the main flow channel with at least 40% to 50% of the free cross-sectional area relative to the expiration opening of the face mask.

[0015] The detection device according to the invention enables, through the design of the main flow channel and / or the bypass channel, a resulting advantageous measuring range for the sensor device in the bypass channel of 0 to 200 mL / min in a very well-resolved range and from 200 to 400 mL / min.

[0016] Preferably, the bypass channel and / or the main flow channel are configured through the base body and / or within the base body, in particular in a materially bonded and / or monolithic manner. A detection device configured in this way is particularly advantageous because the design of the main flow channel and / or the bypass channel enables particularly simple and advantageous detection of an air flow, respiratory air flow, and / or respiratory gas flow from a face mask.

[0017] According to a preferred further development of the invention, a detection device can be provided with the bypass channel being arranged at least in sections at an angle to the main flow channel and / or with the bypass channel being arranged at least in sections opposite to the main flow channel. For advantageous detection of the air flow, respiratory air flow and / or respiratory gas flow from a face mask and / or an advantageously small installation space, it is particularly preferred to arrange the bypass channel at least in sections at an angle to the main flow channel. It is particularly preferred to arrange the bypass channel from the branch point of the main flow channel opposite to the main flow channel. An arrangement of the bypass channel at least in sections opposite to the main flow channel is to be understood within the scope of the invention as guiding the flow in the bypass channel at least in sections opposite to the flow in the main flow channel.Preferably, the bypass channel is arranged parallel to the main flow channel, at least in sections. A detection device configured in this way is particularly advantageous because the design of the main flow channel and / or the bypass channel enables particularly simple and advantageous detection of an air flow, respiratory air flow, and / or respiratory gas flow from a face mask.

[0018] According to a preferred further development of the invention, a detection device can be provided in which the bypass channel is designed, at least in sections, to form a laminar flow or a substantially laminar flow within the bypass channel. Within the scope of the invention, the wording "X or substantially X" is to be understood as a possible, minor deviation, for example due to manufacturing tolerances, material and / or process properties, without changing the underlying, intended function of the feature. A laminar flow or a substantially laminar flow within the bypass channel preferably enables advantageous detection of the air flow, respiratory air flow and / or respiratory gas flow from a face mask by the sensor device.The laminar flow or the essentially laminar flow within the bypass channel is preferably enabled by the structural design of the bypass channel, the flow ratio between the bypass channel and the main flow channel, and / or a coating of the bypass channel. A detection device configured in this way is particularly advantageous because the design of the bypass channel enables detection of an air flow, respiratory air flow, and / or respiratory gas flow from a face mask particularly easily and advantageously.

[0019] According to a preferred further development of the invention, it can be provided in a detection device that the base body, in particular the main flow channel, comprises a flow guiding device, wherein the flow guiding device is designed to guide and / or harmonize a flow through the base body. The flow guiding device is preferably designed as a device for at least partially guiding and / or deflecting the flow into and / or out of the base body. The flow guiding device is preferably designed as a flow grid for guiding and / or harmonizing the flow through and / or out of the base body. The flow grid preferably comprises a plurality of openings. For example, the flow grid comprises rectangular and / or square openings. For example, the flow grid comprises at least two rows, each with at least five openings.The openings preferably have an edge length and / or diameter of 2 to 5 mm. The flow guide device and / or the flow grid preferably have a length along a flow path of at least 5 mm, preferably at least 10 mm. The flow guide device preferably enables harmonization of the flow through the base body by means of a defined resistance to the flow. A detection device configured in this way is particularly advantageous because the design of the flow guide device enables detection of an air flow, respiratory air flow, and / or respiratory gas flow from a face mask particularly easily and advantageously.

[0020] According to a preferred further development of the invention, a detection device can be provided with a flow guide device configured at a front end of the base body, in particular of the main flow channel. The flow guide device is preferably arranged at a free end of the base body. The flow guide device is preferably arranged at one end of the flow channel through the base body and / or within the base body. The flow guide device is preferably arranged downstream of a branch of the bypass channel from the main flow channel in the flow direction. The arrangement of the flow guide device enables advantageous flow for the sensor device for detecting an air flow, respiratory air flow, and / or respiratory gas flow from a face mask.A detection device designed in this way is particularly advantageous because the design and / or arrangement of the flow guiding device enables detection of an air flow, respiratory air flow and / or respiratory gas flow from a face mask in a particularly simple and advantageous manner.

[0021] According to a preferred further development of the invention, a detection device can be provided with a base body and the coupling interface configured as a single piece and / or a monolithic structure, and / or with the base body and / or the coupling interface being constructed from plastic. A single piece and / or monolithic structure of the base body together with the coupling interface enables an advantageous design of the detection device with a small installation space requirement, low material usage, and / or low manufacturing costs. The single piece and / or monolithic structure of the base body together with the coupling interface also enables advantageous structural stability and thus low susceptibility to damage, for example, from impacts or loads.For example, the base body and the coupling interface are manufactured from metal and / or plastic using an injection molding process and / or additive manufacturing. A detection device configured in this way is particularly advantageous because the design of the base body and the coupling interface enables particularly simple and advantageous detection of an air flow, respiratory air flow, and / or respiratory gas flow from a face mask.

[0022] According to a preferred further development of the invention, a detection device can be provided with the base body, in particular the coupling interface, comprising a sealing device, wherein the sealing device is designed to seal the base body, in particular the coupling interface, against the face mask. For reliable detection of an air flow, respiratory air flow and / or respiratory gas flow from a face mask, it is an advantageous embodiment of the detection device if the base body, in particular the coupling interface, comprises a sealing device. Within the scope of the invention, the sealing device serves to seal the detection device, in particular the base body and / or the coupling interface, against the face mask. The sealing device is preferably circumferential, designed as a sealing ring and / or as a sealing lip.The sealing device is preferably arranged at least partially within a groove of the base body and / or the coupling interface to advantageously secure the position of the sealing device. Alternatively or additionally, the face mask has a counter-sealing device for sealing the base body, in particular the coupling interface, against the face mask. By sealing the base body, in particular the coupling interface, against the face mask, the sealing device ensures precise, repeatable, and traceable detection of an air flow, respiratory air flow, and / or respiratory gas flow from a face mask. A detection device configured in this way is particularly advantageous because the configuration of the base body and / or the coupling interface with a sealing device enables detection of an air flow, respiratory air flow, and / or respiratory gas flow from a face mask particularly easily and advantageously.

[0023] According to a preferred further development of the invention, a detection device can be provided with the base body, in particular the coupling interface, comprising at least one undercut for detachably coupling the base body to the face mask and / or with the base body, in particular the coupling interface, being detachably coupled to the face mask without tools. As described above, the coupling interface is preferably adapted to existing standards for interfaces of expiration openings of face masks. For example, the coupling interface is designed as a twist lock, plug-in connection, bayonet lock, clip connection and / or press fit. The coupling interface advantageously enables the detection device to be retrofitted to existing face masks, in particular without interfering with the design of the face masks. The coupling point is preferably designed to be detachable without tools.A detection device designed in this way is particularly advantageous because the design of the coupling interface enables detection of an air flow, respiratory air flow and / or respiratory gas flow from a face mask in a particularly simple and advantageous manner.

[0024] According to a preferred further development of the invention, a detection device can be provided in which the detection device, in particular the base body, is designed in at least two parts and / or comprises at least one opening device, wherein the opening device is designed for the at least partially resealable opening of the detection device, in particular the base body. The two halves of the detection device, in particular the base body, are preferably at least partially separable, hinged open, and / or movable relative to one another. A two-part design of the detection device, in particular the base body, and / or the opening device advantageously enable cleaning, maintenance, and / or repair of the detection device.Since in practice, a face mask is usually cleaned after each use, the two-part design of the detection device, in particular the base body, and / or the opening device ensures simple and advantageous accessibility of the detection device and thus enables simple operation and a long service life. A detection device designed in this way is particularly advantageous because the two-part design of the detection device, in particular the base body, and / or the opening device, enables particularly simple and advantageous detection of an air flow, respiratory air flow, and / or respiratory gas flow from a face mask, which is always clean and long-lasting.

[0025] According to a preferred further development of the invention, it can be provided in a detection device that the main flow channel is arranged at least in sections at an angle to the coupling interface. The main flow channel is preferably arranged at least in sections at an angle to a flow into the detection device. In other words, the flow from the face mask is deflected by the detection device in such a way that the smallest possible installation space requirement and / or the least possible impairment of the field of vision of the face mask user is enabled. A flow through an expiration opening of a face mask in the worn state is described as being directed forwards, or substantially forwards, or obliquely forwards, for example.The detection device according to the invention preferably enables the flow to be redirected to the side, rear, and / or downward relative to the user's line of sight. A detection device configured in this way is particularly advantageous because the configuration of the main flow channel with respect to the coupling interface enables particularly simple and advantageous detection of an air flow, respiratory air flow, and / or respiratory gas flow from a face mask.

[0026] According to a preferred further development of the invention, a detection device can be provided which comprises a valve device, in particular the base body and / or the coupling interface, wherein the valve device is designed for the defined fluid flow of an air flow, respiratory air flow and / or respiratory gas flow from a face mask into the detection device. In addition to or alternatively to the face mask, in particular the expiration opening of the face mask, the detection device comprises the valve device according to the invention. The valve device preferably enables a defined and / or adjustable resistance for expiration. The valve device preferably has the lowest possible resistance for expiration. The valve device further enables defined inhalation through an inhalation opening of the face mask.The valve device therefore preferably closes during the user's inhalation and preferably opens during the user's exhalation. By configuring the detection device with the valve device, the opening behavior of the valve device and the detection behavior of the sensor device can be advantageously coordinated with one another. Thus, a detection device with a valve device enables uncomplicated use with a variety of face masks. A detection device configured in this way is particularly advantageous because the valve device enables particularly simple and advantageous detection of an air flow, respiratory air flow, and / or respiratory gas flow from a face mask.

[0027] According to a second aspect of the invention, the object is achieved by a mask system comprising a face mask and a detection device according to the first aspect. The described mask system provides all the advantages already described for the detection device according to the first aspect of the invention. The face mask preferably comprises a counter-interface for releasably coupling to the coupling interface. Furthermore, the face mask preferably comprises a counter-sealing device as described above and / or a valve device as described above. The face mask is preferably designed as a respiratory protection mask. The face mask is designed as a full-face mask or a half-face mask.A mask system designed in this way is particularly advantageous because the detection device enables particularly simple and advantageous detection, in particular retrofitted detection, of an air flow, respiratory air flow and / or respiratory gas flow from a face mask.

[0028] According to a third aspect of the invention, the object is achieved by using the detection device according to the first aspect. The described use provides all the advantages already described for the detection device according to the first aspect of the invention or for the mask system according to the second aspect of the invention.

[0029] A detection device according to the invention, a mask system according to the invention, and a use according to the invention are explained in more detail below with reference to drawings. They show schematically:

[0030] Fig. 1 shows a perspective view of a mask system with a face mask and a detection device,

[0031] Fig. 2 shows a plan view of another detection device,

[0032] Fig. 3 shows a front view of another detection device, and

[0033] Fig. 4 shows a perspective view of a mask system with a face mask and a detection device.

[0034] Fig. 1 shows a perspective view of a mask system 190 with a face mask 110 and a detection device 100. The detection device 100 is designed to detect an air flow, respiratory air flow, and / or respiratory gas flow from the face mask 110. The detection device 100 comprises a base body 120, a sensor device 130, and a coupling interface 140. The sensor device 130 is designed to detect the air flow, respiratory air flow, and / or respiratory gas flow from the face mask 110. The coupling interface 140 is designed for releasably coupling the base body 120 to the face mask 110. The base body 120 comprises a main flow channel 126 and a bypass channel 122, with the sensor device 130 being arranged in the bypass channel 122. The bypass channel 122 is arranged in sections opposite to the main flow channel 126.The base body 120, here the main flow channel 126, comprises a flow guide device 124, wherein the flow guide device 124 is designed to guide and / or harmonize a flow through the base body 120. The flow guide device 124 is configured at a front end of the base body 120, here the main flow channel 126. The base body 120 and the coupling interface 140 are designed as a single piece and monolithic. The base body 120, here the coupling interface 140, comprises a sealing device 150, wherein the sealing device 150 is designed to seal the base body 120, here the coupling interface 140, against the face mask 110. The base body 120, here the coupling interface 140, comprises an undercut 142 for releasably coupling the base body 120 to the face mask 110, and the base body 120, here the coupling interface 140, can be releasably coupled to the face mask 110 without tools.The main flow channel 126 is arranged at an angle in some sections, here at right angles to the coupling interface 140. The detection device 100 comprises a valve device 160, wherein the valve device 160 is configured for the defined fluid flow of an air flow, respiratory air flow, and / or respiratory gas flow from a face mask 110 into the detection device 100.

[0035] Fig. 2 shows a plan view of another detection device 100. The detection device 100 comprises a base body 120, a sensor device 130, and a coupling interface 140. The sensor device 130 is designed to detect the air flow, respiratory air flow, and / or respiratory gas flow from the face mask 110 (not shown). The coupling interface 140 is designed with an undercut 142 for releasably coupling the base body 120 to the face mask 110 (not shown). The base body 120 comprises a main flow channel 126 and a bypass channel 122, with the sensor device 130 being arranged in the bypass channel 122. The bypass channel 122 is arranged in sections opposite the main flow channel 126.The base body 120, here the main flow channel 126, comprises a flow guide device 124, wherein the flow guide device 124 is designed to guide and / or harmonize a flow through the base body 120. The flow guide device 124 is configured at a front end of the base body 120, here the main flow channel 126.

[0036] Fig. 3 shows a front view of another detection device 100. The detection device 100 comprises a base body 120, a sensor device 130, and a coupling interface 140. The sensor device 130 is designed to detect the air flow, respiratory air flow, and / or respiratory gas flow from the face mask 110 (not shown). The coupling interface 140 is designed with an undercut 142 for releasably coupling the base body 120 to the face mask 110 (not shown). The base body 120 comprises a main flow channel 126 and a bypass channel 122, with the sensor device 130 being arranged in the bypass channel 122. The bypass channel 122 is arranged in sections opposite the main flow channel 126.The base body 120, here the main flow channel 126, comprises a flow guide device 124, wherein the flow guide device 124 is designed as a flow grid for guiding and / or harmonizing a flow through the base body 120. The flow grid comprises two rows, each with twelve square flow openings. The flow guide device 124 is configured at a front end of the base body 120, here the main flow channel 126. The detection device 100, here the base body 120, comprises an opening device 128, wherein the opening device 128 is designed for at least partially resealable opening of the detection device 100, here the base body 120.

[0037] Fig. 4 shows a perspective view of a mask system 190 comprising a face mask 110 and a detection device 100. The mask system 190 is schematically illustrated in a worn position on a user.

[0038] List of reference symbols

[0039] Detection device Face mask Main body Bypass channel Flow guide device Main flow channel Opening device Sensor device

[0040] Coupling interface Undercut Sealing device Valve device

[0041] Mask system

Claims

Patent claims 1. Detection device (100) for detecting an air flow, respiratory air flow and / or respiratory gas flow from a face mask (110), the detection device (100) comprising a base body (120), at least one sensor device (130) and a coupling interface (140), - wherein the at least one sensor device (130) is designed to detect the air flow, respiratory air flow and / or respiratory gas flow from the face mask (110), - wherein the coupling interface (140) is designed for the detachable coupling of the base body (120) to the face mask (110) and - wherein the base body (120) comprises a main flow channel (126) and a bypass channel (122) and wherein the at least one sensor device (130) is arranged in the bypass channel (122).

2. Detection device (100) according to claim 1, characterized in that the bypass channel (122) is arranged at least in sections at an angle to the main flow channel (126) and / or that the bypass channel (122) is arranged at least in sections opposite to the main flow channel (126).

3. Detection device (100) according to one of the preceding claims, characterized in that the bypass channel (122) is designed at least in sections to form a laminar flow or a substantially laminar flow within the bypass channel (122).

4. Detection device (100) according to one of the preceding claims, characterized in that the base body (120), in particular the main flow channel (126), comprises a flow guiding device (124), wherein the flow guiding device (124) is designed to guide and / or harmonize a flow through the base body (120).

5. Detection device (100) according to claim 4, characterized in that the flow guiding device (124) is configured at a front end of the base body (120), in particular of the main flow channel (126).

6. Detection device (100) according to one of the preceding claims, characterized in that the base body (120) and the coupling interface (140) are designed in one piece and / or monolithically and / or that the base body (120) and / or the coupling interface (140) are designed from plastic.

7. Detection device (100) according to one of the preceding claims, characterized in that the base body (120), in particular the coupling interface (140), comprises a sealing device (150), wherein the sealing device (150) is designed to seal the base body (120), in particular the coupling interface (140), against the face mask (110).

8. Detection device (100) according to one of the preceding claims, characterized in that the base body (120), in particular the coupling interface (140), comprises at least one undercut (142) for releasably coupling the base body (120) to the face mask (110), and / or that the base body (120), in particular the coupling interface (140), can be releasably coupled to the face mask (110) without tools.

9. Detection device (100) according to one of the preceding claims, characterized in that the detection device (100), in particular the base body (120), is designed in at least two parts and / or comprises at least one opening device (128), wherein the opening device (128) is designed for at least partially reclosable opening of the detection device (100), in particular the base body (120).

10. Detection device (100) according to one of the preceding claims, characterized in that that the main flow channel (126) is arranged at least in sections at an angle to the coupling interface (140).

11. Detection device (100) according to one of the preceding claims, characterized in that the detection device (100), in particular the base body (120) and / or the coupling interface (140), comprises a valve device (160), wherein the valve device (160) is designed for the defined fluid flow of an air flow, respiratory air flow and / or respiratory gas flow from a face mask (110) into the detection device (100).

12. A mask system (190) comprising a face mask (110) and a detection device (100) according to any one of the preceding claims.

13. Use of a detection device (100) according to one of the preceding claims 1 to 12 with a face mask (110).

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