Attachment for a device for delivering a fluid into the external auditory canal

Description

FIELD OF THE INVENTION

[0001] The present invention relates to an attachment for a device for generating an air flow, preferably a warm air flow, or for dispensing a fluid, which attachment is designed to be inserted at least partially into an external auditory canal of a human or animal ear in order to dry moisture accumulation in the external auditory canal.

[0002] Furthermore, the invention relates to an ear drying device comprising a device for generating an air flow and the attachment according to the invention. STATE OF THE ART

[0003] Patients suffering from chronically moist ear canals—whether due to a rhinoplasty, a perforated eardrum, or another condition of the external auditory canal—as well as hearing aid wearers, are often faced with the problem of efficiently removing moisture from the external auditory canal. Water can also enter the ear canal in the bathtub, shower, or while swimming, which can lead to reduced hearing. Bacteria, germs, and dirt can also more easily enter the external auditory canal and cause inflammation, necessitating rapid removal of these fluid accumulations.

[0004] However, no devices are known in the prior art that enable such removal in a safe and efficient manner. For example, it is known to introduce an air stream into the ear canal to dry the external auditory canal. An attachment for a device that can be inserted into the external auditory canal and generates an air stream is known from EP 0937422 B1.On the one hand, the attachment proposed therein directs the air introduced into the external auditory canal directly onto the eardrum of the treated ear, which can lead to injuries and permanent damage; on the other hand, due to its design, the attachment cannot be inserted into the patient's ear canal or can only be inserted a few millimeters deep, which means that accumulations of moisture, in particular those located in the eardrum-side end area of ​​the usually 2 to 2.5 cm long ear canal, cannot be removed or can only be removed after a longer period of use and / or a higher intensity of the air flow.

[0005] Similarly, when removing earwax from the external auditory canal using a fluid, injuries to the eardrum can occur if the fluid is directed directly onto the eardrum. At the same time, earwax residues can remain in the external auditory canal, making cleaning the external auditory canal unsatisfactory if the fluid cannot reach the entire external auditory canal. EP 0 243 261 A1, for example, discloses a hygiene device for cleaning an auditory canal. The device comprises two chambers and a flexible probe.

[0006] Fluid from one chamber is introduced into the ear canal via an injection tube running inside the probe and can then flow into the other chamber via a recovery tube also running inside the probe. Another device for cleaning the external auditory canal is known, for example, from DE 692 14 690 T2.

[0007] Even when administering a fluid into the external auditory canal for the purpose of caring for or therapeutically treating the external auditory canal, injuries to the eardrum can occur if the fluid is directed directly onto the eardrum. Furthermore, the caring or therapeutic effect of such a treatment of the external auditory canal using a fluid cannot be maximized if the fluid cannot reach the entire external auditory canal. OBJECT OF THE INVENTION

[0008] Therefore, it is an object of the present invention to provide an attachment for a device for generating an air flow, preferably a warm air flow, which attachment enables rapid and efficient removal of moisture from the external auditory canal of a human or an animal by means of an air flow, without exposing the eardrum to the risk of damage.

[0009] In addition, the provided attachment should be easily adaptable to different ear canals, have a simple structure and be cost-effective to manufacture.

[0010] The efficiency of ear drying devices incorporating the attachment according to the invention is also intended to be significantly increased. The ear drying device according to the invention is intended to provide a noticeable drying result after only 15 seconds of use. Complete drying is intended to be achieved with an application time of approximately 30 seconds or less.

[0011] Furthermore, it is an object of the present invention to provide an attachment for a device for dispensing a fluid, which attachment enables rapid and efficient removal of cerumen from the external auditory canal of a human or an animal by means of a fluid, without exposing the eardrum to the risk of damage.

[0012] Finally, it is an object of the present invention to provide an attachment for a device for dispensing a fluid, which attachment enables rapid and efficient care or therapeutic treatment of the external auditory canal of a human or an animal by means of a fluid, without exposing the eardrum to the risk of damage. DESCRIPTION OF THE INVENTION

[0013] One object underlying the invention is achieved according to the invention by an attachment for a device for generating an air flow, preferably a warm air flow, which attachment is designed to be inserted at least partially into an external auditory canal of a human or animal ear, wherein the attachment has a connecting piece for connection to the device for generating an air flow, as well as a tongue-shaped guide vane for guiding air flowing out of the device for generating an air flow, with a guide vane base, and wherein, when viewing a longitudinal cross-section of the attachment, the guide vane base intersects a longitudinal axis of the attachment, which longitudinal axis runs through the center of a cross-section of the connecting piece that is normal to the longitudinal cross-section. The connecting piece can be designed in different ways.For example, it can form an essential element of the attachment and provide stability. However, it can also simply constitute a section of the attachment that enables the attachment to be connected to the airflow generation device without significantly contributing to the attachment's stability.

[0014] The tongue-shaped guide vane of the attachment intersects the longitudinal axis running through the center of the cross-section of the connecting piece. According to the invention, this requires that the guide vane, in a side view of the attachment, runs at least partially obliquely to this longitudinal axis. Preferably, the guide vane can have a non-zero gradient over its length, viewed in the direction of flow. According to the invention, the air flow provided by the device for generating an air flow is introduced into the external auditory canal via the attachment according to the invention and is guided by the guide vane in such a way that a flow particularly advantageous for the desired drying is established within the external auditory canal.The airflow enters the attachment via the connecting piece, initially flows through the connecting piece, and is then guided via the guide vane base of the guide vane towards the external auditory canal. Because the guide vane, in particular the longitudinal cross-section of the guide vane base, intersects the longitudinal axis of the attachment, the airflow is directed such that it does not directly impinge on the user's eardrum. Thus, the airflow is directed by the attachment according to the invention in such a way that a vortex field approximately forms inside the external auditory canal. This vortex field can - depending on how far the attachment is inserted into the user's external auditory canal - result either from a swirl that the airflow experiences due to the guide vane and / or from reflection of the airflow off the side walls of the external auditory canal leading to the eardrum.This means that the airflow cannot hit the eardrum directly, but only the side walls of the external auditory canal and is reflected off these side walls, preferably several times, before being directed along the eardrum, passing along its surface. For example, the airflow can hit an upper side wall of the ear canal, be reflected there, and be directed along the eardrum towards a lower side wall of the external auditory canal, where the airflow is reflected once more and finally directed towards the auricle. It is also possible for the airflow to be reflected several times off the side walls of the external auditory canal before reaching the eardrum.In particular, the attachment according to the invention can also be used to remove moisture accumulation from the external auditory canal recess – that is, the hollow formed immediately in front of the eardrum between the floor of the external auditory canal, which slopes downwards towards the eardrum, and the slanted eardrum covering this floor. The turbulence of the airflow, whether caused by swirling and / or reflection from the side walls of the external auditory canal leading to the eardrum, causes the airflow to sweep over the eardrum and the external auditory canal recess, but not directly onto the eardrum. Due to the flow path of the airflow inside the external auditory canal caused by the attachment according to the invention, particularly short application times are achieved, which are necessary for satisfactory drying.For example, a noticeable drying effect can be observed after just 15 seconds when using an ear drying device according to the invention—as described below—with the attachment according to the invention. To completely dry the external auditory canal—i.e., to reduce the moisture content in the ear canal back to the normal level—a duration of use of approximately 30 seconds or less is sufficient.

[0015] It has also been shown that the attachment according to the invention also enables particularly gentle and at the same time effective removal of cerumen from the external auditory canal when the attachment is used in conjunction with a device for dispensing a fluid. Due to the guide vane according to the invention, the fluid, for example water, forms a flow pattern inside the external auditory canal that is particularly favorable for cleaning. Analogous to the air flow described above, the fluid is also forced into an approximate vortex field when it flows into the external auditory canal, so that on the one hand a direct impact of the fluid on the eardrum is prevented and at the same time a particularly effective removal of cerumen from the external auditory canal, in particular cerumen adhering to the side walls, is ensured by the swirling and / or reflection of the fluid on the side walls of the external auditory canal.

[0016] Furthermore, it has been found that the attachment according to the invention also enables particularly gentle yet effective care or therapeutic treatment of the external auditory canal when the attachment is used in conjunction with a device for dispensing a fluid. Due to the guide vane according to the invention, the fluid forms a flow path inside the external auditory canal that is particularly favorable for the care or therapeutic treatment of the external auditory canal. Injuries to the eardrum can be avoided and the care or therapeutic effect can be maximized because the fluid used for the care or therapeutic treatment is not directed directly onto the eardrum and can reach the side walls of the external auditory canal particularly well due to the swirling and / or reflection of the fluid according to the invention.

[0017] While it is generally sufficient to achieve the above-described effect according to the invention, which enables gentle drying of the eardrum, to insert the tongue-like guide vane into the external auditory canal and to utilize either the turbulence of the air flow caused by the guide vane or the reflection and / or turbulence on the walls of the external auditory canal, which is also caused by the guide vane, it may be advantageous to additionally provide an ear funnel for the attachment.

[0018] According to a preferred embodiment of the attachment according to the invention, it is therefore provided that the attachment comprises an ear funnel, which ear funnel encloses the tongue-shaped guide vane at least in sections, preferably completely, along its length.

[0019] The ear funnel serves as the part of the attachment that comes into direct contact with the external auditory canal or its side walls when the attachment is used as intended and inserted into the user's external auditory canal. The ear funnel can be connected to the attachment's connecting piece and protrude from it, or the connecting piece can form an end section of the ear funnel. The guide vane is arranged at least partially within the preferably sleeve-shaped ear funnel. Preferably, the guide vane does not protrude from the ear funnel.On the one hand, the ear speculum allows for a slight widening and positioning of the usually slanted external auditory canal, which is advantageous for drying—namely, a slight straightening—when the attachment with the ear speculum is inserted into the external auditory canal of a human or animal. On the other hand, the ear speculum also allows for easy adaptation of the attachment to different circumstances, such as use in adults or children—for example, by selecting the appropriate shape and size of the ear speculum. The length of the ear speculum can be adjusted to the longitudinal shape of the guide vane to support the formation of the turbulence and reflections in the external auditory canal described above.

[0020] According to a further preferred embodiment of the attachment according to the invention, it is provided that, when viewed in a longitudinal cross-section of the attachment, the guide vane base also intersects a longitudinal axis of the ear funnel, which longitudinal axis runs through the center of a proximal opening of the ear funnel. When used as intended for drying the external auditory canal, the attachment is inserted into the user's external auditory canal with the proximal opening of the ear funnel or is attached to it. proximal In this context, and in the following, this refers to the position of a specific element relative to the user's eardrum. Specifically, the proximal opening refers to the opening of the ear speculum closest to the user's eardrum.

[0021] If the ear funnel is rotationally symmetrical—which is preferably the case, except for an outlet opening in the ear funnel casing—the longitudinal axis of the ear funnel coincides with its axis of rotation. The guide vane can be arranged within the ear funnel such that, viewed in a longitudinal section, the guide vane base intersects the longitudinal axis of the ear funnel. It has proven particularly effective for achieving the desired turbulence and reflections, and thus for achieving the desired drying effect, if the guide vane base intersects the longitudinal axis of the ear funnel in its proximal end region.

[0022] Preferably, the longitudinal axis of the ear funnel coincides with the longitudinal axis of the attachment.

[0023] According to a preferred embodiment of the attachment according to the invention, it is provided that the guide vane base of a first section of the guide vane has a longitudinal cross-sectional profile which is curved in a first direction, and the guide vane base of a second section of the guide vane has a longitudinal cross-sectional profile which is curved in a second direction, and the two curved sections (5a, 5b) are curved in opposite directions to one another.

[0024] This special configuration of the guide vane or guide vane base results in a particularly favorable airflow distribution within the external auditory canal. This embodiment of the invention has achieved particularly good drying results, particularly compared to attachments with a straight longitudinal cross-section. It is particularly advantageous if—as viewed from the connecting piece—the gradient of a tangent applied to the guide vane base decreases with distance from the connecting piece in the first section of the guide vane base and increases with distance from the connecting piece in the second section of the guide vane base.

[0025] According to a further preferred embodiment of the invention, the first section and the second section merge directly into one another. In particular, it is advantageous from a flow perspective if the first section and the second section of the guide vane base are not separated by a discontinuity, but rather merge smoothly into one another.

[0026] This leads to a flow pattern of the air stream used for drying within the external auditory canal that is particularly favorable for the desired drying effects.

[0027] According to a further preferred embodiment of the attachment according to the invention, it is provided that the tongue-shaped guide vane has two guide vane cheeks projecting from the guide vane base, namely a first guide vane cheek and a second guide vane cheek, wherein the guide vane base and the guide vane cheeks form a guide channel or part of a guide channel for the air flowing out of the device for generating an air flow.

[0028] The guide vane cheeks ensure targeted and controlled guidance of the airflow along the guide vane and controlled delivery of the airflow to the external auditory canal. In versions of the attachment with an ear funnel, any unwanted reflections of the airflow on the inner wall of the ear funnel can also be avoided. The guide vane cheeks can contact the ear funnel, for example, over the entire length of the guide vane base or only in one or more longitudinal sections of the guide vane base. Alternatively, the guide vane cheeks can also be spaced apart from the ear funnel.

[0029] According to a further preferred embodiment, the first guide vane cheek protrudes from a first longitudinal edge of the guide vane base, and the second guide vane cheek protrudes from a second longitudinal edge of the guide vane base opposite the first longitudinal edge. Alternatively, it can also be provided that the first guide vane cheek is formed by the first longitudinal edge of the guide vane base, and the second guide vane cheek is formed by the second longitudinal edge of the guide vane base.

[0030] The guide vane cheeks limit the guide vane base on its opposite longitudinal sides and largely prevent the air flow used for drying from the guide channel from reaching other areas of the attachment, such as an exhaust air duct, before it reaches the external auditory canal for its intended drying. If, however, the guide vane cheeks contact the ear funnel over their entire length, such overflow of air from the guide channel into other areas, such as the exhaust air duct, can be completely prevented. In this way, the guide channel and exhaust air duct can be fluidically isolated or separated from one another by the guide vane. Particularly advantageous drying effects can be achieved if the guide vane cheeks run the entire length of the guide vane.The guide vane cheeks can also be manufactured in one piece with the guide vane base and can be formed by the first longitudinal edge and the second longitudinal edge of the guide vane base opposite it. The guide vane cheeks can have a cross-sectional profile with a different curvature than the guide vane base located between the guide vane cheeks. The transition between the guide vane base and the guide vane cheeks can be smooth and can be expressed, for example, only by a change in the gradient or curvature of the cross-sectional profile of the guide vane base. This can make it difficult to clearly distinguish between the guide vane base and the guide vane cheeks. For example, the guide vane base and the guide vane cheeks can be arranged such that an overall cross-section of the guide vane formed by the guide vane base and the guide vane cheeks is essentially U-shaped.

[0031] According to a further preferred embodiment of the attachment according to the invention, it is provided that the tongue-shaped guide vane protrudes from the connecting piece and preferably has a section running in the connecting piece.

[0032] This is particularly advantageous when the attachment has no ear funnel or a removable one. In this case, the connecting piece serves both as a connection to the airflow generation device and as a support for the guide vane.

[0033] In order to avoid injuries to the eardrum and / or the side wall of the external auditory canal, a further preferred embodiment of the attachment according to the invention provides that the tongue-like guide vane is arranged completely within the ear funnel and / or the connecting piece.

[0034] With attachments according to this embodiment of the invention, the risk of injury to the eardrum and / or the side walls of the user's external auditory canal can be minimized because the entire guide vane is concealed inside the attachment. In particular, the first and second sections of the guide vane can be arranged within the ear funnel, and the section of the guide vane running within the connecting piece can be arranged within the connecting piece.

[0035] According to a further preferred embodiment of the attachment according to this invention, it is provided that the ear funnel tapers from the connecting piece towards a proximal opening of the ear funnel.

[0036] The proximal opening preferably has a circular circumference and a diameter of no more than 7 mm. Since the shape of the ear funnel is adapted to the shape of the external auditory canal, at least in a proximal section of the ear funnel, which is inserted into the auditory canal, this enables particularly simple and painless insertion of the attachment into the external auditory canal. The attachment according to the invention can thus be brought up to approximately 15 mm, preferably 10 mm, close to the user's eardrum, which supports the formation of the approximate vortex field described above in the external auditory canal and can promote the drying of fluid accumulations in the external auditory meatus recess. The achievable minimum distance from the eardrum can vary depending on the specific suitability of the attachment for use on men, women, or children.

[0037] Particularly preferably, a proximal end of the guide vane, preferably a proximal end of the guide vane base, is arranged substantially flush with the proximal opening of the ear funnel.

[0038] In such embodiments of the invention, the guide vane is essentially flush with the ear funnel. This allows the airflow to be directed particularly effectively as it exits the attachment via the proximal opening of the ear funnel into the external auditory canal. Both the exit angle at which the airflow exits the attachment—relative to the longitudinal axis of the ear funnel or attachment—and the swirl imparted to the airflow as it exits the attachment can be adjusted particularly well with this embodiment. In particular, the angle of incidence at which the airflow hits the side walls of the external auditory canal can be predetermined even more accurately.

[0039] According to a further preferred embodiment of the attachment according to the invention, it is provided that the proximal end of the guide vane, preferably a proximal end of the guide vane base, divides the proximal opening of the ear funnel into an outflow opening for air flowing out of the attachment into the auditory canal and an inflow opening for air flowing into the attachment from the auditory canal.

[0040] On the one hand, the dry air stream, preferably warm air, used for drying purposes flows from the attachment into the external auditory canal via the proximal opening of the ear speculum – namely in the area of ​​the outflow opening. On the other hand, moist air from the external auditory canal can flow back into the attachment via the proximal opening – namely in the area of ​​the inflow opening. The ear speculum thus also allows the air used for drying to flow out of the auditory canal and prevents the formation of a backflow within the auditory canal. Moist air can thus leave the external auditory canal immediately after absorbing moisture and isolated from the side walls of the external auditory canal, leading to an improved drying effect.This ensures that the airflow used for drying is not mixed with moist air in the area of ​​the proximal opening before being introduced into the external auditory canal. In this case, the proximal end of the guide vane or the proximal end of the guide vane base and / or the guide vane cheeks contact an inner surface of the ear funnel to fluidically separate the inflow and outflow openings.

[0041] According to a further preferred embodiment of the invention, it is provided that the tongue-like guide vane divides an internal volume of the ear funnel into an air supply channel for air flowing from the attachment into the auditory canal and an exhaust air channel for air flowing from the auditory canal into the attachment, wherein preferably the air supply channel connects the connecting piece to the outflow opening and wherein preferably the exhaust air channel connects the inflow opening to an outlet of the attachment.

[0042] This allows the dry air stream and the moist air escaping from the external auditory canal to be guided largely separately from one another within the attachment. The dry air stream, preferably warm air, is first generated by the device for generating an air stream, then guided through the connecting piece and over the guide vane via the supply air duct of the ear speculum and into the external auditory canal. After the external auditory canal, in particular the external acoustic meatus recess, has been dried, the moist air can leave the external auditory canal through the inlet opening and is guided via the exhaust air duct to the outlet of the ear speculum, through which the moist air is expelled from the attachment. Within the attachment, there is therefore little or no mixing of the air masses in the supply air duct and the exhaust air duct, which further increases the efficiency of the drying process.

[0043] In general, the guide vane base or the guide vane cheeks can contact the ear funnel, in particular the inner side of the ear funnel, either at no point, or over the entire length of the ear funnel, or only in the area of ​​the proximal opening of the ear funnel. Design variants are also conceivable in which the guide vane base or the guide vane cheeks contact the ear funnel in sections and are spaced apart from the ear funnel, namely its inner side, in sections.

[0044] According to a further preferred embodiment, it is provided that a cross section of the supply air duct decreases in the direction of flow.

[0045] The flow direction is the direction in which the airflow flows through the supply air duct to reach the external auditory canal. This cross-sectional constriction of the supply air duct, which is preferably continuous, allows the outlet velocity at which the airflow leaves the attachment to be adjusted, allowing a particularly favorable outlet velocity to be selected for the desired drying effect.

[0046] The attachment is dimensioned such that the outlet of the attachment is located outside the external auditory canal. The outlet is particularly preferably formed by an opening in a housing wall of the ear funnel, preferably in a section of the ear funnel immediately upstream of the connecting piece.

[0047] The moist air that was already used for drying is no longer fed into the connecting piece or even into the device for generating an airflow, but rather leaves the attachment in the area of ​​the ear funnel. This results in a further simplification of the design of the attachment and also of the device for generating an airflow. Overall, this measure allows the manufacturing costs of the attachment to be kept low. By arranging the outlet in the section of the ear funnel upstream of the connecting piece, the outlet can also be manufactured in a particularly simple manner. The outlet is arranged in a section of the ear funnel which, when the attachment is used as intended, protrudes at least partially, preferably completely, over the user's external auditory canal.

[0048] According to the invention, the attachment can further be designed so that the connecting piece and the guide vane are formed integrally with one another and can preferably be connected as a unit to the ear funnel, or that the ear funnel and the guide vane are formed integrally with one another and can preferably be connected as a unit to the connecting piece, or that the connecting piece, the guide vane and the ear funnel are formed integrally with one another.

[0049] If the connecting piece and guide vane are designed as a single piece, differently designed ear funnels can be used in conjunction with one and the same unit comprising the connecting piece and guide vane, which unit can then be offered as a separate spare part. This means that the attachment can be adapted to different ear canals without having to replace the connecting piece or the guide vane. This is particularly advantageous because the design of the connecting piece is primarily based on the size and shape of an outlet opening for the air flow of the device for generating an air flow and is therefore tailored to the device in question. This means that the ear funnel can be specifically tailored to the respective user group, independent of the other components of the attachment.For example, the material, size, and / or shape of the ear speculum can be selected depending on whether the attachment is intended for use by male or female adults or children, while the remaining components of the attachment are tailored to the specific airflow-generating device with which the attachment is intended to be used. This makes the ear speculum easy to replace and can be retrofitted independently of the other components of the attachment. The ability to replace the ear speculum after each ear treatment is also very beneficial from a hygienic perspective.

[0050] With the one-piece design of the ear funnel and guide vane, all parts of the attachment that (or could) come into contact with the user's external auditory canal during intended use—namely, the ear funnel and guide vane—can be offered as separate spare parts and connected to the connecting piece. This enables particularly hygienic use of the attachment according to the invention, since the unit comprising the ear funnel and guide vane can be replaced after each use.

[0051] With the one-piece design of the ear funnel, guide vane, and connecting piece, the entire attachment can be offered as a separate spare part and replaced after each use. This design is also very cost-effective.

[0052] According to a further embodiment, it is provided that the connecting piece is formed by an end portion of the ear funnel.

[0053] In particular, in the case of a one-piece design of ear funnel, guide vane and connecting piece, the attachment according to the invention can be made more compact and manufactured more cost-effectively due to the associated omission of an additional separate component.

[0054] The object underlying the invention is also achieved by an ear drying device comprising a device for generating an air flow, preferably a warm air flow, and an attachment according to the invention according to the previously described embodiments. SHORT DESCRIPTION OF THE CHARACTERS

[0055] The invention will now be explained in more detail using exemplary embodiments. The figures are exemplary and are intended to illustrate the inventive concept, but in no way restrict it or represent it exhaustively. They show: Fig. 1a shows an attachment according to the invention in a first embodiment Fig. 1b shows an ear funnel of the first embodiment of the attachment according to the invention Fig. 2a shows the first embodiment of the attachment with ear funnel in a first perspective view Fig. 2b shows the first embodiment of the attachment with ear funnel in a second perspective view Fig. 3a shows a longitudinal section through the attachment from Fig. 2a und 2b which is attached to a device for generating an air flow Fig. 3 shows a longitudinal section through the attachment from Fig. 2a und 2b Fig. 4a a cross-section of the attachment Fig. 3b according to AA Fig. 4b cross-section of the attachment Fig. 3b according to BB Fig. 4c a cross section of the attachment Fig. 3b according to CC Fig. 5a an ear drying device according to the invention comprising the attachment according to the first embodiment without ear funnel Fig. 5b the ear drying device according to the invention comprising the attachment according to the first embodiment with ear funnel Fig. 5c the ear drying device according to the invention with a protective cap Fig. 6a a first flow pattern in an external auditory canal caused by the attachment according to the invention Fig. 6b a second flow pattern in an external auditory canal caused by the attachment according to the invention Fig. 6c a third flow pattern in an external auditory canal caused by the attachment according to the invention Fig. 7a a line representation of the Fig. 1a Fig. 7b line representation of the Fig. 1b Fig. 7c a line representation of the Fig. 2a Fig. 7 line representation of the Fig. 2b WAYS OF IMPLEMENTING THE INVENTION

[0056] In the following description, the term "longitudinal section" refers to a section through an attachment 1 according to the invention, in which the section plane runs parallel to the drawing plane of the figures and a longitudinal axis 12 of the attachment 1 lies in the section plane. Furthermore, the term "cross-section" refers to a section through the attachment 1 in which the section plane runs orthogonal to the longitudinal section.

[0057] In principle, there are a multitude of conceivable embodiments of the attachment according to the invention, wherein all of these embodiments have in common that an air flow is swirled by a guide vane and / or is reflected on the side walls of an external auditory canal 3 of a user due to the guide vane geometry in order to achieve an optimal drying effect inside the external auditory canal 3.

[0058] In a first embodiment, the attachment 1 according to the invention comprises a connecting piece 4 and a tongue-shaped guide vane 5, and can optionally further comprise an ear funnel 18, wherein the connecting piece 4 and the guide vane 5 are formed integrally with one another and can be detachably connected to the ear funnel 18. This embodiment is characterized, among other things, by the fact that the ear funnel 18 is removable and the attachment 1 can be used with or without the ear funnel 18. The ear funnel 18, which is not mandatory in this embodiment, is - if present - easily replaceable and can be retrofitted independently of the connecting piece 4 and the guide vane 5. The possibility of replacing the ear funnel 18 after each drying process is also very advantageous from a hygienic point of view.

[0059] In a second embodiment, the attachment according to the invention also comprises the connecting piece, the guide vane, and the ear funnel. In this embodiment, the ear funnel and the guide vane are formed integrally with one another, and the unit comprising the ear funnel and guide vane can be connected to the connecting piece. All parts of the attachment that (may) come into contact with the user's external auditory canal 3 during intended use of the attachment, namely the ear funnel and guide vane, can be offered as separate spare parts and connected to the connecting piece. This enables particularly hygienic use of the attachment according to the invention, since the unit comprising the ear funnel and the guide vane can be replaced after each use.

[0060] In a third embodiment, the attachment according to the invention also comprises the connecting piece, the guide vane, and the ear funnel, with the connecting piece, guide vane, and ear funnel being formed integrally with one another in this embodiment. This allows the entire attachment to be offered as a separate spare part and replaced after each use. This results in particularly simple and hygienic handling of the attachment according to the third embodiment. Furthermore, its one-piece design allows the attachment to be manufactured particularly easily and therefore cost-effectively.

[0061] Also included in the inventive concept are embodiments of the attachment in which the connecting piece, the guide vane and the ear funnel are each designed as a separate component.

[0062] In the following, the invention is described with reference to the Figuren 1 bis 6 The first embodiment of the attachment 1 according to the invention is described in more detail; the second and third embodiments are shown in the Figuren 1 bis 6 however, not shown.

[0063] Fig. 1a is a perspective view of this embodiment of the attachment 1 according to the invention without the ear funnel, which is optional in this embodiment. The attachment 1 comprises the connecting piece 4 for connecting the attachment 1 to a device 2 for generating an air flow, preferably a warm air flow. The connecting piece 4 forms the section of the attachment 1 that ensures that the attachment 1 is held to the device 2 for generating an air flow.

[0064] Furthermore, the attachment 1 comprises the tongue-like guide vane 5, which can be inserted into an external auditory canal 3 of an animal or human (hereinafter referred to as the user) for the purpose of drying the auditory canal 3 (see Fig. 6 ). The guide vane 5 enables controlled guidance of the air flow as well as its controlled delivery to the external auditory canal 3. The guide vane 5 has a guide vane base 25 for guiding the air flow and can also comprise guide vane cheeks 26 in order to form a guide channel or part of a guide channel for the air flow.

[0065] Fig. 3a shows a longitudinal section of the attachment 1 according to the invention according to the first embodiment without ear funnel, which longitudinal section runs through the connecting piece 4 and the guide vane 5. Fig. 3b shows essay 1 from Fig. 3a with ear funnel 18, whereby the Fig. 3a und 3b The attachments 1 shown are identical except for the ear funnel 18.

[0066] The essentially sleeve-shaped connecting piece 4 serves to connect the attachment 1 to the device 2 for generating an air flow and enables the air flow from the device 2 to flow into the attachment 1. The geometry of the connecting piece 4 is based on the geometry of an outlet opening 15 of the device 2 for generating an air flow, through which outlet opening 15 the air flow flows out of the device 2. The tongue-shaped guide vane 5 protrudes from the connecting piece 4 in the illustrated embodiment and directs the air flow into the external auditory canal 3 of the user (see Fig. 6 ).

[0067] To the Fig. 3a In order to be able to use the attachment 1 shown as intended for drying the external auditory canal 3, it can be inserted with the guide vane 5 - either in sections or completely - into the external auditory canal 3 of the user.

[0068] Out of Fig. 3a und 3b It is clearly evident that the guide vane 5 is arranged such that the guide vane base 25 intersects the longitudinal axis 12 of the attachment 1. The longitudinal axis 12 of the attachment 1 runs through a center point of a normal to the Fig. 3a und 3b shown longitudinal section of the connecting piece 4. The cross section of the connecting piece 4 refers exclusively to the connecting piece 4 itself - in particular not to any sections of the guide vane 5 arranged within the connecting piece 4. The cross section of the connecting piece 4, through whose center the longitudinal axis 12 extends, is in Fig. 4c to see.

[0069] This arrangement of the guide vane 5 directs the airflow into the user's external auditory canal 3 in such a way that a flow field is created in the external auditory canal 3 that is particularly advantageous for the desired drying effect. Furthermore, this ensures that the airflow exiting the attachment 1 is not directed directly onto the user's eardrum 31. When the airflow flows over a proximal end 7a of the guide vane base 25 and leaves the attachment 1, it is swirled and / or directed into the external auditory canal 3 in such a way that the airflow is reflected off the side walls of the external auditory canal 3, thereby achieving an optimal drying effect inside the external auditory canal 3. Preferably, the guide vane base 25 intersects the longitudinal axis 12 in a proximal end region of the attachment 1—that is, the end region closest to the user's eardrum 31.

[0070] Also from Fig. 3a und 3b It can be seen that the guide vane base 25 has a curved longitudinal section which is normal to the Figuren 4a und 4b The guide vane base 25 of a first section 5a of the guide vane 5 protruding from the connecting piece 4 has a longitudinal cross-sectional profile that is curved in a first direction, and the guide vane base 25 of a second section 5b of the guide vane 5 protruding from the connecting piece 4 has a longitudinal cross-sectional profile that is curved in a second direction, wherein the two curved sections 5a, 5b are curved in opposite directions. In the Fig. 3a und 3b In the embodiment shown, the second section 5b has a proximal end 7 of the guide vane 5.

[0071] Thus, the guide vane 5 has at least a first apex 13 and a second apex 14. This special configuration of the guide vane 5 achieves a particularly favorable flow distribution of the air stream within the external auditory canal 3. With this embodiment of the invention, particularly good drying results were achieved, particularly in comparison with attachments comprising a guide vane 5 with a straight longitudinal cross-section. It is particularly advantageous if - viewed from the connecting piece 4 - the gradient of a tangent applied to the guide vane base 25 decreases in the first section 5a of the guide vane base 25 with the distance from the connecting piece 4 and increases in the second section 5b of the guide vane base 25 with the distance from the connecting piece 4.

[0072] The guide vane 5 has a section 5c running in the connecting piece 4, wherein the section 5c has a distal end 6 of the guide vane 5. The section 5c adjoins the section 5a of the guide vane 5. A flow cross-section for air flowing from the device 2 for generating an air flow into the attachment 1 is limited by the section 5c of the guide vane 5 running in the connecting piece 4 and the connecting piece 4. This makes it possible to adjust the portion of the total air flow which is to pass unhindered from the connecting piece 4 to the guide vane 5. In particular, the air flow can also be subjected to a flow cross-section constriction, which flow cross-section constriction can be less drastic in attachments for children, for example, than in attachments for adults.The section 5c of the guide vane 5 running in the connecting piece 4 also makes it possible to receive the air flow flowing into the attachment 1 from the device 2 for generating an air flow already in the area of ​​the connecting piece 4, so that the air flow can be directed accordingly immediately upon entry into the attachment 1.

[0073] Two guide vane cheeks, namely a first guide vane cheek 26 and a second guide vane cheek 27, protrude from the guide vane bottom 25 from the longitudinal edges 16 of the guide vane bottom 25 in order to form, together with the guide vane bottom 25, a guide channel 10 or part of a guide channel 10 for the air flow. The guide vane bottom 25 and the guide vane cheeks 26, 27 form part of the guide channel 10 if the guide vane cheeks 26, 27 protrude from the guide vane bottom 25 only in a longitudinal section of the guide vane 5, but not over its entire length. The guide channel 10 for the air flow formed by the guide vane base 25 and the guide vane cheeks 26, 27 is formed by the volume which is delimited by the guide vane base 25, the first guide vane cheek 26 on the one hand, and the second guide vane cheek 27 on the other hand.The guide channel 10 can further improve the targeted and controlled guidance of the air flow within the attachment 1 as well as the controlled delivery of the air flow to the external auditory canal 3. In embodiments with an ear funnel, for example in the case of the first embodiment of the attachment 1 with an ear funnel 18 according to . Fig. 3b - by using the guide vane cheeks 26,27, any unwanted reflections of the air flow on an inner wall of the ear funnel 18 are avoided.

[0074] Fig. 4a shows the cross section of the attachment 1 according to the invention according to section line AA from Fig. 3b . Fig. 4b shows the cross section according to section line BB from Fig. 3b In both cases, the cut runs through the ear funnel 18 and through the guide vane base 25 of the guide vane 5. Fig. 4c shows the cross section of the connecting piece 4 according to section line CC from Fig. 3b .

[0075] As in the Figuren 4a, 4b As can be seen, the guide vane base 25 in the illustrated embodiment has a U-shaped curved cross-sectional profile. The cross section of the guide vane base 25 is curved over the entire length of the guide vane 5, slightly U-shaped. The curvature can increase or decrease from one end of the guide vane 5 to the other end of the guide vane 5. It can also be provided that the cross section of the guide vane base 25 is not curved over the entire length of the guide vane 5, but only in a longitudinal section of the guide vane 5. Curvatures of the cross-sectional profile of the guide vane base 25 other than U-shaped are also conceivable. Although the Figuren 4a und 4b Cross sections of attachment 1 with ear funnel 18 according to Fig. 3b ; however, since the Fig. 3b shown attachment 1 apart from the ear funnel 18 with the Figur 3a shown attachment 1 is identical, the statements made regarding the curved cross-sectional profile of the guide vane base 25 also apply to the first embodiment of the attachment 1 without ear funnel 18 according to Fig. 3a to.

[0076] The attachment 1 according to the first embodiment can be inserted into the external auditory canal 3 either with or without ear funnel 18 in order to be used as intended for drying the external auditory canal 3.

[0077] By detachably connecting the Fig. 1a and 3a shown attachment 1 with the one in Fig. 1b The perspectively shown ear funnel 18 gives the Fig. 2a, 2b and 3billustrated attachment 1, namely the attachment 1 according to the first embodiment with ear funnel 18. For this purpose, the ear funnel 18 can be pushed onto the connecting piece 4 - or connected to it or the guide vane in some other way. In other embodiments of the attachment 1, such as the third embodiment described above, the connecting piece 4 can be formed by an end section, preferably a distal end section - because it is located away from the user's eardrum 31 - of the ear funnel 18.

[0078] In the case of the first embodiment of the attachment 1 with ear funnel 18, the ear funnel 18 is detachably connectable to the connecting piece 4 and protrudes therefrom in such a way that the guide vane 5 is enclosed along its entire length by the ear funnel 18 and the adjoining connecting piece 4. It can also be provided that the ear funnel 18 and connecting piece 4 only enclose a longitudinal section of the guide vane 5, so that the guide vane 5 protrudes beyond the ear funnel 18. Fig. 1b In the present exemplary embodiment, the ear funnel 18 shown is rotationally symmetrical except for an outlet 24, wherein the longitudinal axis 12 of the attachment 1 forms the corresponding axis of rotation of the ear funnel 18.

[0079] Out of Fig. 2a, 2b , 3b , 4a, 4b und 4c It is clearly visible that the cross-section of the ear funnel 18 decreases from the connecting piece 4 to a proximal opening 19 of the ear funnel 18, through which the ear funnel 18 is inserted into the auditory canal 3 when the attachment 1 is used as intended. This reduction in cross-section makes it possible to determine the insertion depth of the attachment 1 into the external auditory canal 3. This makes it possible, for example, to bring the attachment 1 up to approximately 15 mm, preferably up to approximately 10 mm, from the user's eardrum 31.

[0080] The proximal end 7 of the guide vane 5, or the proximal end 7a of the guide vane base 25, is arranged essentially flush with the proximal opening 19 of the ear funnel 18. Accordingly, the proximal end 7a of the guide vane base 25 is located within the proximal opening 19 of the ear funnel 18 and divides it into an outflow opening 22 for air flowing from the attachment into the external auditory canal 3, and an inflow opening 23, through which inflow opening 23 air can flow from the external auditory canal 3 back into the attachment 1.

[0081] In embodiments of the attachment with ear funnel, for example in the case of the first embodiment of the attachment 1 with ear funnel 18, in which the guide vane 5 protrudes from the connecting piece 4 of the attachment 1 or is connected to it, the guide vane 5 runs essentially over the entire length of the ear funnel 18. As a result, the air flow used for drying can be guided over the entire length of the ear funnel 18 and released into the external auditory canal in a very controlled manner without risking injury to the external auditory canal 3 and / or the eardrum.

[0082] To further increase the drying efficiency, the outflow opening 22 can be smaller than the inflow opening 23. For example, the outflow opening 22 can occupy one-third of the proximal opening 19 and the inflow opening 23 can occupy two-thirds of the proximal opening 19.

[0083] Since the proximal opening 19 of the ear funnel 18 is usually smaller than a distal opening 29 of the connecting piece 4, drying by the air flow is further supported by increasing the exit velocity of the air flow from the attachment 1, ensuring a particularly rapid and complete escape of the moist air from the ear canal 3. The air flow from the device 2 flows into the attachment 1 via the distal opening of the connecting piece 4.

[0084] In embodiments of the attachment with an ear funnel, such as in the case of the first embodiment of the attachment 1 with an ear funnel 18, an internal volume of the ear funnel 18 is divided into an air supply duct 20 and an exhaust duct 21 by the guide vane base 25, and optionally the first guide vane cheek 26 and the second guide vane cheek 27. For this purpose, the longitudinal edges 16 of the guide vane base 25 or - if present - the adjoining guide vane cheeks 26, 27 can directly contact the ear funnel 18 either along their entire length or only in sections, or can be slightly spaced from the ear funnel 18. If contact is made over the entire length of the guide vane 5, fluidic insulation can be achieved between the air supply duct 20 and the exhaust duct 21.In the case of only partial contact or spacing between guide vane 5 and ear funnel 18, complete insulation cannot be guaranteed, but it can at least be ensured that mixing of the air guided in the supply air duct 20 with the air guided in the exhaust air duct 21 is largely prevented.

[0085] The supply air duct 20 connects the distal opening 29 of the connecting piece 4 with the outlet opening 22. The exhaust air duct 21 connects the inlet opening 23 of the ear funnel 18 with the outlet 24 of the attachment 1, which is formed as a recess in the housing on the underside of the ear funnel 18. Accordingly, the supply air duct 20 allows the air flow generated by the device 2 to flow into the user's external auditory canal 3, and the exhaust air duct 21 allows the air used to dry the external auditory canal 3 to flow back out of the external auditory canal 3 into the atmosphere.

[0086] To prevent the guide vane 5 from deforming during the intended use of the attachment 1 according to the invention when the attachment 1 is inserted into the external auditory canal 3, it can be provided that the ear funnel 18 is rigid in comparison to the connecting piece 4 and / or the guide vane 5, preferably less flexible than the connecting piece 4 and / or the tongue 5. Through this measure, the ear funnel 18 protects in particular the guide vane 5 from any deformation. For example, the ear funnel 18 can be made of polyethylene or polypropylene, while the connecting piece 4 and the guide vane 5 can be made of thermoplastic elastomer or silicone.

[0087] Fig. 3a shows the attachment 1 in a connection position in which the attachment 1 is connected to the device 2 for generating an air flow (see also Fig. 5a, 5b und 5c ) is connected.

[0088] For the purpose of connection, the attachment 1 with the connecting piece 4 is pushed sectionally into the outlet opening 15 for the air flow of the device 2 for generating an air flow. A locking projection 17 on a device-side end section of the connecting piece 4 prevents accidental release of the connection between the device 2 for generating an air flow and the attachment 1. In principle, however, many different ways of connecting the attachment 1 to the device 2 are conceivable. The air flow exiting the device 2 thus first flows through the connecting piece 4 of the attachment 1 when it flows into the attachment 1. This is also the case if the connecting piece 4 is not pushed into the outlet opening 15 but is connected to the device 2 in another way, for example, by being pushed onto it.

[0089] A spacer 28 arranged circumferentially around the circumference of the connecting piece 4, at least in sections, is located on a housing of the device 2 for generating an air flow and thus ensures that the connecting piece 4 cannot be inserted deeper than intended into the outlet opening 15. In embodiments of the attachment with an ear funnel, for example in the case of the first embodiment with an ear funnel 18 according to Fig. 3b , the ear funnel 18 can be pushed onto the connecting piece 4 for the purpose of connection and rest against the spacer 28. Here, the connecting piece 4 and ear funnel 18 are connected to each other by frictional engagement, although other connection options are also possible - for example, by means of interlocking locking grooves and locking projections.

[0090] Fig. 5a shows an ear drying device according to the invention, comprising the device 2 for generating an air flow and the attachment 1 according to the invention according to the first embodiment of the attachment according to the invention, wherein the ear funnel 18 has been removed from the one-piece unit consisting of the connecting piece 4 and the guide vane 5 and is therefore not visible.

[0091] The device 2 is preferably designed specifically for the purpose of ear drying and can preferably be portable.

[0092] Fig. 5b shows the ear drying device according to the invention comprising the device 2 for generating an air flow and the attachment 1 according to the invention with ear funnel 18.

[0093] Fig. 5c shows the ear drying device according to the invention Fig. 5a oder 5b . The attachment 1 is covered by a protective cap 30, which serves in particular to protect the attachment 1 during transport of the device 2.

[0094] Fig. 6a is a schematic representation of the flow pattern of a device according to the invention caused by the attachment 1 in its operating state. The flow pattern depicted inside the external auditory canal 3 occurs regardless of the specific embodiment of the attachment 1 according to the invention. Due to the comparatively high insertion depth of the attachment 1 into the external auditory canal 3, there is no reflection of the air flow exiting the attachment 1 on the side walls 8, 9; the air flow is swirled due to the guide vane 5 upon leaving the attachment 1, so that a vortex field favorable for drying is created inside the external auditory canal 3.

[0095] Fig. 6b also shows the attachment 1 inserted into the ear canal 3, but with a lower insertion depth than in Fig. 6a .

[0096] This results in a different flow pattern inside the external auditory canal 3, which, however, is independent of the selected design of the attachment 1. In this case, the air flow exiting the attachment 1 is reflected on the side walls 8, 9 of the external auditory canal 3, so that a vortex field favorable for drying is created inside the external auditory canal 3.

[0097] Fig. 6c shows the attachment 1 inserted into the ear canal 3, but the ear drying device is operated with different operating parameters, resulting in a different exit angle of the airflow from the attachment 1. This results in a different flow pattern inside the external auditory canal 3, which, however, is independent of the selected design of the attachment 1. In this case, too, the airflow exiting the attachment 1 is reflected on the side walls 8, 9 of the external auditory canal 3, creating a vortex field inside the external auditory canal 3 that is favorable for drying.

[0098] The Figuren 7a, 7b, 7c und 7c are line representations of the Figuren 1a, 1b, 2a und 2b . BEZUGSZEICHENLISTE

[0099] 1 Attachment 2 Device for generating an airflow 3 External auditory canal 4 Connecting piece 5 Tongue-shaped guide vane 5a First section of the guide vane 5b Second section of the guide vane 5c Section of the guide vane running in the connecting piece 6 Distal end of the guide vane 7 Proximal end of the guide vane 7 Proximal end of the guide vane base 8 Upper side wall of the auditory canal 9 Lower side wall of the auditory canal 10 Guide channel 11 External acoustic meatus recess 12 Longitudinal axis 13 First vertex 14 Second vertex 15 Outlet opening 16 Longitudinal edge 17 Locking projection 18 Ear funnel 19 Proximal opening 20 Supply air duct 21 Exhaust air duct 22 Outlet opening 23 Inlet opening 24 Outlet 25Guide vane base 26First guide vane cheek 27Second guide vane cheek 28Spacer 29Distal opening of the connecting piece 30Protective cap 31Eardrum

Claims

1. Attachment (1) for a device (2) for generating an air flow or for delivering a fluid, wherein the attachment (1) is configured to be at least partially inserted into the external auditory canal (3) of a human or animal ear, the attachment (1) comprising: a connection stub (4) for connection to the device (2), and a tongue-shaped guide vane (5) projecting from the connection stub (4), for guiding air exiting the device (2) or fluid emitted by the device, having a guide vane base (25) with a U-shaped curved cross-sectional profile, wherein the guide vane (5) is arranged downstream of the connection stub (4) in the flow direction of the air or fluid, and wherein, when viewed in a longitudinal section of the attachment (1), the guide vane base (25) intersects a longitudinal axis (12) of the attachment (1), which passes through the center of a cross-section of the connection stub (4) normal to the longitudinal section.

2. Attachment (1) according to claim 1, characterized in that the attachment (1) comprises an ear funnel (18), which at least partially, preferably entirely, longitudinally surrounds the tongue-shaped guide vane (5) and has a proximal opening (19), via which the attachment (1) is insertable or placeable into the external auditory canal (3) during intended use, such that the proximal opening (19) is the opening of the ear funnel (18) closest to the eardrum (31), and wherein the ear funnel (18) adjoins the connection stub (4) and projects from it, or the connection stub (4) forms a terminal section of the ear funnel (18).

3. Attachment (1) according to claim 2, characterized in that, when viewed in a longitudinal section of the attachment (1), the guide vane base (25) intersects a longitudinal axis (12) of the ear funnel (18), which passes through the center of the proximal opening (19) of the ear funnel (18).

4. Attachment (1) according to claim 3, characterized in that the longitudinal axis (12) of the ear funnel (18) coincides with the longitudinal axis (12) of the attachment (1).

5. Attachment (1) according to any one of claims 1 to 4, characterized in that the guide vane base (25) of a first section (5a) of the guide vane (5) has a longitudinal sectional contour curved in a first direction, and the guide vane base (25) of a second section (5b) of the guide vane (5) has a longitudinal sectional contour curved in a second direction, the two curved sections (5a, 5b) being curved in opposite directions.

6. Attachment (1) according to claim 5, characterized in that the first section (5a) and the second section (5b) merge directly into one another.

7. Attachment (1) according to any one of claims 1 to 6, characterized in that the tongue-shaped guide vane (5) comprises two guide vane flanks, namely a first flank (26) and a second flank (27), protruding from the guide vane base (25), wherein the guide vane base (25) and the flanks (26, 27) form a guide channel or part of a guide channel for the air exiting the device (2).

8. Attachment (1) according to claim 7, characterized in that the first guide vane flank (26) projects from a first longitudinal edge of the guide vane base (25), and the second guide vane flank (27) projects from a second longitudinal edge opposite the first.

9. Attachment (1) according to any one of claims 1 to 8, characterized in that the tongue-shaped guide vane (5) has a section (5c) running within the connection stub (4).

10. Attachment (1) according to any one of claims 2 to 9, characterized in that the tongue-shaped guide vane (5) is entirely arranged within the ear funnel (18) and / or the connection stub (4).

11. Attachment (1) according to any one of claims 2 to 10, characterized in that the ear funnel (18) tapers from the connection stub (4) towards the proximal opening (19).

12. Attachment (1) according to any one of claims 2 to 11, characterized in that a proximal end (7) of the guide vane (5), which represents the end closest to the eardrum (31) during intended use, preferably a proximal end (7a) of the guide vane base (25), is arranged within the proximal opening (19) of the ear funnel (18).

13. Attachment (1) according to claim 12, characterized in that the proximal end (7) of the guide vane (5), preferably the proximal end (7a) of the guide vane base (25), divides the proximal opening (19) of the ear funnel (18) into an outflow opening (22) for air flowing from the attachment (1) into the auditory canal (3) and an inflow opening (23)for air entering from the auditory canal (3) into the attachment (1).

14. Attachment (1) according to any one of claims 2 to 13, characterized in that the tongue-shaped guide vane (5) divides an inner volume of the ear funnel (18) into a supply air channel (20) for air flowing into the auditory canal (3) and an exhaust air channel (21) for air flowing out of the auditory canal (3), wherein preferably the supply air channel (20) connects the connection stub (4) with the outflow opening (22), and the exhaust air channel (21) connects the inflow opening (23) with an outlet (24) of the attachment (1), wherein preferably a cross-section of the supply air channel (20) decreases along the flow direction.

15. Ear drying device comprising a device (2) for generating an air flow and an attachment (1) according to any one of the preceding claims.