Patent Application
20230405214
The present invention relates to ear cleaning devices.
As is known, the cleaning of the ears is essential to prevent infections and the formation of earwax plugs, and requires particular attention in the execution because it is not without risk to the parts of the ear, such as the eardrum, more internal than the auricle.
This cleaning is often carried out using a cotton swab (or Q-tip) which, however, has well-known contraindications, because it exposes the earwax to the risk of being pushed inside the ear canal and to the possibility of damaging the eardrum. Moreover, due to an incorrect disposal by the user, cotton buds accumulate in sewage treatment plants and water courses.
Several types of ear cleaning devices have been proposed to replace Q-tips.
One type of device involves the use of a soft, helical-shaped tip that is inserted into the ear and rotated (manually or electrically) to remove earwax.
Other types of devices, such as the so-called auricular syringe, require the introduction of water or emollient liquids into the ear canal.
A device has also been proposed that relies on the vibration (caused by an electric motor) of a tip introduced into the ear canal, which would cause fragmentation of the earwax, and subsequent aspiration of the same.
According to another typology, the device consists of a rod made of biocompatible plastic having at both ends a silicone head equipped with protuberances intended to facilitate the removal of earwax; this device is used in a manner similar to how the cotton bud is used.
Document CN105982788 describes a cleaning device comprising a pressure air pump connected to an internally hollow terminal body having soft hairs on its surface. In use, the terminal body is inserted into the ear canal and then pressure is applied to the pump causing said body to expand so that the soft hairs contact the walls of the ear canal removing ear wax. According to that document, after the terminal body is deflated, it is pulled out of the ear removing the earwax that remains trapped between the soft hairs.
Document DE2048798 describes an ear cleaning device comprising a rubber ball connected via a channel to a free end intended to expand when air is pushed from the rubber ball. Solid “warts” (indicated by 6 in document DE2048798) are disposed on the free end to capture earwax.
Document EP0234061 describes an instrument for cleaning the external ear canal consisting of a stem and a pear-shaped head. There is a set of protruding ribs on the head for removing earwax.
The purpose of the present invention is to propose an ear cleaning device, based on the use of an air-expandable cleaning body, which is an alternative to the one known and mentioned above and which, in particular, is efficient in the cleaning action while also offering full safety for the user in its use.
It is an object of the present invention an ear cleaning device as defined by claim 1 and particular embodiments thereof described by dependent claims 2-10.
The constructional and functional features of the invention may be better understood from the following detailed description, in which reference is made to the accompanying drawing plates representing some preferred and non-limiting forms of implementation, wherein:
The dispenser 2 is configured to transfer pressurized air to the cleaning body 3. In accordance with a preferred embodiment, the air dispenser 2 is a manual pressure pump 2 comprising a small elastic bag (or ampoule) 5 having an end 6 provided with an air inlet/outlet hole 7 (
The manual pressure pump 2 is, for example, made of an elastomeric material (such as, for example, latex or rubber) or biocompatible silicone. Advantageously, the outer wall of the elastic bag 5 is shaped to define pressure areas 8 intended to be squeezed between the user's fingers. The manual pressure pump 2 when squeezed delivers air through the hole 7 and, when the manual pressure has ceased, is refilled with air by an elastic expansion of the elastic bag 5.
Note that an air dispenser other than the described manual pressure pump may be provided. For example, a dispenser of the piston type, i.e., a syringe type, may be employed.
The junction element 4, if provided, internally defines an air connection duct open on a first hole 9 (
It should be noted that the junction element 4 may be removably attached to the cleaning body 3 and the dispenser 2 in other ways than those described, and for example, such as providing for the use of ferrules, sealing bands or by screwing. Furthermore, it is also possible that the cleaning body 3 and the dispenser 2 may be directly coupled without the use of any joining element.
In particular, the junction element 4 is made of a rigid (preferably, hypoallergenic) plastic material such as, for example, polypropylene. Alternatively, so-called biodegradable plastics may be used.
The cleaning body 3 is internally hollow and is configured to be placed in communication with the air dispenser 2 so as to be able to receive inside itself the air supplied by the latter. This cleaning body develops in length according to a relative longitudinal axis L (
The cleaning body 3 is such that it assumes a resting configuration in which it is at least partially insertable into the ear canal of one ear and an expanded configuration in which it presents an increased volume due to the air supplied by the nozzle 2. As will also be described later, it is in the expanded configuration that the cleaning body 3 will be able to exert its cleaning function of the ear canal.
In greater detail, the cleaning body 3 comprises an insertion portion 14 having an elongated shape, i.e., developing more along the longitudinal axis L (
Note that the insertion portion 14 includes a plurality of lobes (or bulges) 16 that extend in the direction of the longitudinal axis L; that is, such lobes 16 extend lengthwise in the direction of the longitudinal axis L. Each lobe 16 defines a respective convex wall 17 (i.e., a bulge) that connects to intermediate walls 18 that extend in the direction of the longitudinal axis L and form corresponding grooves between the lobes 16 themselves. The grooves 18 extend in the direction of the longitudinal axis L but are not necessarily parallel to the axis L.
With respect to the number of lobes 16, the example in the figures shows the presence of four lobes 16, but cleaning portions 14 having two lobes, three lobes or a number of lobes greater than four, for example, six, seven or eight lobes, may also be employed.
The cleaning body 3 is soft in that it should be able to swell, adapt to the shape of the ear canal as much as possible, and should not cause damage to the eardrum. In particular, the cleaning body 3 is made of an elastic material such as, for example, biocompatible silicone, or an elastomeric material such as, for example, latex or rubber. The cleaning body 3, or at least the insertion portion 14, may have a smooth outer wall or advantageously be provided with a suitable graininess or embossing that increases its abrasive power.
As shown, illustratively, in the sectioned embodiment of
The above-described shape of the cleaning body 3 allows the lobes 16 to inflate, while the ribs 19 associated with the intermediate walls 18 resist the traction and torsion to which the device 1 is subjected in the expansion and cleaning action. The fitting portion 15 provides a seal with the fitting member 4 (if provided) or directly with the air nozzle 2, to prevent leakage of air from the interior of the cleaning device 1 to the exterior, with drops in internal pressure when inflated.
In addition, the lobe structure has been shown to allow an advantageous increase in the external expandable surface of the cleaning body 3 and also an increase in its abrasive function, compared to what can be obtained with a uniform, non-lobed structure.
In particular, the lobes 16, in extending towards the fitting portion 15 of the cleaning body 3, tend to merge with each other until they form a uniform overall shape, i.e. free of lobes and grooves. In the example considered, the fitting portion 15 of the cleaning body 3 has a spherical or cylindrical type outline (free of grooves and lobes), which is well suited to the function of connecting with the junction element 4.
Furthermore, the fitting portion 15 advantageously has a maximum diameter (distance from the longitudinal axis L) chosen so as to avoid a dangerous, excessive introduction of the cleaning body 3 into the ear canal. For example, the fitting portion 15 has a maximum diameter of about 10.0 mm (dimensions may vary depending on feasibility and the type of user: child, adult and small, medium or large animals).
With respect to possible size values, the insertion portion 14, in a resting configuration, may have, for example, a maximum diameter of between 4.5 mm and 5.00 mm, in particular, between 4.5 mm and 4.8 mm. Note that the values for the diameter of the resting portion of insertion 14 shown above are illustrative only and refer to use for the human ear. Keep in mind that the auditory cord has a fairly variable diameter of up to about 8-9 mm in the adult. Therefore, it is possible to envision different models of the cleaning device 1 having different dimensions.
For example, the thickness of the convex walls 17 (
The ear cleaning device 1 can be easily assembled by the user by joining the air nozzle 2, the junction member 4, and the cleaning body so that it assumes the configuration shown in
The ear cleaning device 1, assembled and in the resting configuration (i.e., with the cleaning body 3 un-expanded) is operated by the user grasping it by the manual pressure pump 2 and introducing the insertion portion 14 into the ear canal of one ear.
Next, the user presses his or her fingers on the hand pump 2 and pressurized air escapes from the hole 7 and passes through the inner conduit of the junction element 4 and enters the cleaning body 3.
The air entering the cleaning body 3 causes an expansion (i.e., a bulge) of the insertion portion 14, which assumes the configuration shown, illustratively, in
At this point, the user may perform rotations (e.g., in an alternative direction) or small translations of the cleaning device 1 so that the convex surfaces 17 of the swollen lobes 16 can effectively act by rubbing on the ear canal and remove the earwax.
The insertion portion 14, still in the expanded configuration, is extracted from the ear canal so that it removes the abrasion cerumen that has become fixed on its walls as a result of expansion and handling. The cleaning operation may be repeated several times.
Note that the cleaning operation described above may be preceded by the use of an ear canal cleanser.
Note that the lobes 16, together with the grooves 18, allow air to pass outwardly while avoiding both compressing air within the ear during introduction of the insertion portion 14 into the ear canal and creating decompression following removal of the insertion portion 14. This is important for protection of the eardrum.
The cleaning device 1 described is designed specifically for human ear cleaning, but the teachings provided can also be used to make an animal (e.g., dog or cat) ear cleaning device by tailoring the overall geometry of the device to the ear canal of the animal of interest.
It should be noted that although the above description refers to an air dispenser 2, it is also possible to alternatively employ a dispenser of a fluid other than air, such as may be water, but still such that the desired expansion of the insertion portion 14 can be achieved. For example, the aforementioned manual pressure pump or piston dispenser may also be used, with appropriate adaptations, to dispense water in a manner similar to that described for air.
The cleaning device 1 described above is very advantageous.
An advantage is attributable to the fact that the lobes 16 and the grooves 18 allow for adequate structural and sealing resistance during the air compression, device rotation and extraction phases. In addition, the presence of the inflated lobes, which constitute discontinuities, contributes favorably to the cleaning effect of the ear canal.
Another advantage concerns the safety for the user due to the aforementioned ability to avoid compressions or decompressions of air inside the ear canal that could, otherwise, be harmful.
The possibility of de-assembling the cleaning device 1 in order to wash it or replace part of its components is another advantageous aspect also because it favours a correct disposal of the component to be replaced.
| Number | Date | Country | Kind |
|---|---|---|---|
| 102020000023245 | Oct 2020 | IT | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/IB2021/058830 | 9/28/2021 | WO |
