self-contained device for injecting fluid into an ear canal

Abstract

Autonomous device for injecting a fluid into an auditory canal The present description relates to an autonomous device (100) for injecting a fluid into an auditory canal, comprising a housing (120) adapted to be held in a hand and containing: - an electrical energy source (150); - a fluid temperature setting unit (140); and - a propellant (130) for the temperature-set fluid towards an outlet (126) of the housing communicating with an earpiece. Figure for the abstract: Fig. 1b

Description

Title of the invention: autonomous device for injecting a fluid into an ear canal Technical field

[0001] The present description relates generally to autonomous devices for injecting a fluid into an ear canal, as well as to the corresponding systems. Prior art

[0002] To date, disabling rotary vertigo mainly benefits from medical treatment, and in resistant forms from generally destructive surgical intervention. Summary of the invention

[0003] There is a need to provide a non-invasive solution to act on the functioning of the inner ear in order to calm these vertigoes or relieve any other related symptoms.

[0004] One embodiment overcomes all or part of the drawbacks of known devices.

[0005] One embodiment provides a stand-alone device for injecting a fluid into an ear canal, comprising a case adapted to be held in one hand and containing: - a source of electrical energy; - a fluid temperature control unit; and - a propellant of the fluid brought to temperature towards an outlet of the box communicating with an earpiece.

[0006] In one embodiment, the device delivers a determined quantity of fluid for a defined duration and at a defined temperature.

[0007] In one embodiment, the housing comprises a control circuit configured to be connected to at least one element of the housing among the temperature control unit and the propellant.

[0008] In one embodiment, the housing comprises a heating stage, for example connected to the control circuit, and arranged so as to heat the fluid before leaving the housing.

[0009] In one embodiment, the housing comprises at least one temperature sensor, or a fluid flow sensor, connected to the control circuit.

[0010] In one embodiment, the housing includes a fluid flow controller connected to the control circuit such that the fluid flow rate is controlled by the control circuit.

[0011] In one embodiment, the thruster comprises at least one fan connected to the control circuit.

[0012] In one embodiment, the housing includes at least one opening such that the propellant can draw fluid from outside the housing through said opening.

[0013] In one embodiment, the housing comprises at least one metallic thermal storage element configured to be in contact with the fluid, said thermal storage element being configured to inertially store cold created by the temperature control unit.

[0014] In one embodiment, the temperature control unit comprises a Peltier effect element.

[0015] In one embodiment, the temperature control unit comprises a pressurized gas enclosure.

[0016] In one embodiment, the temperature control unit and the propellant are configured so that the flow rate of the fluid at the end of the housing is between 2 and 10 L / min, preferably between 5 and 9 L / min, for example approximately 8 L / min, for a duration greater than or equal to 15 seconds, preferably greater than 20 s, for example approximately 30 seconds, and with a temperature of the fluid between 5 and 18°C, preferably between 10 and 16°C, for example approximately 15°C.

[0017] In one embodiment, the control circuit is configured to control at least one element of the housing to which it is connected so that the flow rate of the fluid at the outlet of the housing is between 2 and 10 L / min, preferably between 5 and 9 L / min, for example approximately 8 L / min, for a duration greater than or equal to 15 seconds, preferably greater than 20s, for example approximately 30 seconds, and with a temperature of the fluid between 5 and 18°C, preferably between 10 and 16°C, for example approximately 15°C.

[0018] In one embodiment, the control circuit comprises a wireless data communication circuit.

[0019] In one embodiment, the fluid is a gas.

[0020] In one embodiment, the fluid temperature control unit comprises a removable cooling body, configured to maintain its temperature between 5 and 18°C, preferably between 10 and 16°C, for example approximately 15°C, during a fluid injection period.

[0021] One embodiment provides a self-contained system for injecting a fluid into an ear canal, comprising: - a device as described above; and - a portable device comprising: a wireless data communication module configured to exchange data with the device, a unit for processing data from the device, and a display screen. Brief description of the drawings

[0022] These characteristics and advantages, as well as others, will be explained in detail in the following description of particular embodiments given without limitation in relation to the attached figures among which:

[0023] [Fig.1a] represents a cross-section of an auditory canal of a human ear;

[0024] [Fig.lb] schematically represents in the form of blocks an autonomous device for injecting a fluid into an auditory canal according to one embodiment;

[0025] [Fig.2] schematically represents an autonomous device for injecting a fluid into an auditory canal according to one embodiment;

[0026] [Fig. 3] schematically represents an autonomous device for injecting a fluid into an auditory canal according to one embodiment;

[0027] [Fig.4] schematically represents an autonomous device for injecting a fluid into an auditory canal according to one embodiment;

[0028] [Fig.5] schematically represents an autonomous device for injecting a fluid into an auditory canal according to one embodiment;

[0029] [Fig.6] schematically represents an autonomous device for injecting a fluid into an auditory canal according to one embodiment;

[0030] [Fig.7] represents a block of the device of figures 1 to 6 according to one embodiment;

[0031] [Fig.8a] represents a block of the device of figures 2 to 6 according to one embodiment;

[0032] [Fig.8b] represents a block of the device of figures 2 to 6 according to one embodiment;

[0033] [Fig.8c] represents a block of the device of figures 2 to 6 according to one embodiment;

[0034] [Fig.9] represents a block of the device of figures 1 to 6 according to one embodiment;

[0035] [Fig. 10] schematically represents in the form of blocks an autonomous device for injecting a fluid into an auditory canal according to one embodiment;

[0036] [Fig. 1 1] schematically represents in the form of blocks an autonomous device for injecting a fluid into an auditory canal according to one embodiment;

[0037] [Fig. 12] represents an autonomous device for injecting a fluid into an auditory canal according to one embodiment;

[0038] [Fig.13] represents in the form of blocks an autonomous system for injecting a fluid into an auditory canal; and

[0039] [Fig. 14] represents, in block form, an example of a data processing architecture using the system of [Fig. 13]. Description of the embodiments

[0040] The same elements have been designated by the same references in the different figures. In particular, the structural and / or functional elements common to the different embodiments may have the same references and may have identical structural, dimensional and material properties.

[0041] For the sake of clarity, only the steps and elements useful for understanding the described embodiments have been shown and are detailed.

[0042] Unless otherwise specified, when referring to two elements connected to each other, this means directly connected without intermediate elements other than conductors, and when referring to two elements connected (in English "coupled") to each other, this means that these two elements can be connected or be connected by means of one or more other elements.

[0043] In the following description, when reference is made to absolute position qualifiers, such as the terms "front", "back", "top", "bottom", "left", "right", etc., or relative position qualifiers, such as the terms "above", "below", "upper", "lower", etc., or to orientation qualifiers, such as the terms "horizontal", "vertical", etc., reference is made unless otherwise specified to the orientation of the figures.

[0044] Unless otherwise specified, the expressions "about", "approximately", "substantially", and "of the order of" mean to within 10% or 10°, preferably to within 5% or 5°.

[0045] [Fig. 1a] represents a cross-section of an auditory canal of a human ear.

[0046] The human ear comprises a roughly cylindrical auditory canal that ends in the eardrum. Not shown, the ear also comprises an internal part called the inner ear.

[0047] In some cases, the inner ear malfunctions, causing nausea, vomiting, and rotary vertigo, as in Meniere's disease. Invasive solutions, such as an injection of an ototoxic product through the eardrum, or surgery can partially or permanently treat these problems.

[0048] In order to find a non-invasive solution, the inventor carried out numerous tests and trials and it emerged that when a vertigo attack occurs, it is possible to reduce the symptoms by lowering the temperature of at least part of the eardrum and the inner ear. To do this, it was discovered within the framework of the invention that by injecting a fluid into the ear canal, at a temperature between 5 and 18°C, preferably between 10°C and 16°C, for example approximately 15°C, with a flow rate of between 2 and 10L / min, preferably between 5 and 9 L / min, for example 8 L / min and for a duration greater than ten seconds, preferably greater than 20 s, for example 30 seconds, the symptoms were significantly alleviated. In an advantageous example, air at 15°C is injected with a flow rate of 8L / min for 30s.

[0049] Applying a sufficiently large flow of fluid for a sufficiently long time makes it possible to effectively remove calories from the external auditory canal, the middle ear and the inner ear.

[0050] The embodiments described provide a device allowing this non-invasive solution to be implemented easily, by the patient himself, and in a portable and autonomous manner.

[0051] The embodiments described thus provide an autonomous device for injecting a fluid into the auditory canal, comprising a suitable housing which can potentially be held in one hand, i.e. portable, and containing: - a source of electrical energy; - a fluid temperature control unit; - a fluid propellant brought to temperature towards an outlet of the housing communicating with an earpiece; wherein the device delivers a determined quantity of fluid for a defined time and at a defined temperature.

[0052] [Fig.lb] schematically represents in the form of blocks an autonomous device 100 for injecting a fluid into the auditory canal according to one embodiment.

[0053] In the example shown, the device 100 comprises a housing 120, for example made of metal or plastic. This housing 120 contains an electrical energy source 150 (BAT), for example a rechargeable or non-rechargeable battery, a fluid temperature control unit 140 (FD) and a propellant 130 (PRO). The battery powers, for example, the temperature control unit and / or the propellant. In one example, the housing 120 optionally comprises one or more openings 128 so that the fluid, for example outside air, can be drawn from outside the housing by the propellant 130 and pass through the wall of the housing to the inside. This opening 128 is for example arranged through a wall of the housing arranged opposite the nozzle. For example, the case has a shape that allows it to be held in one hand.

[0054] The device comprises for example an ear tip 124 of generally cylindrical shape which is in communication with the housing. The shape of the tip allows it to be inserted for example close to the eardrum. An optional stop collar 122 is for example arranged radially around the periphery of the tip at a distance from an outlet mouth of the tip so that the collar prevents, by pressing on the ear, that the tip does not perforate the eardrum. In the example shown, the tip is presented with a longitudinal axis inclined relative to the longitudinal axis of the housing 120, however it is possible to envisage that the tip has the same longitudinal axis as the housing 120.

[0055] In the example shown, an outlet 126 of the housing communicates with the earpiece 124 so that the fluid propelled from inside the housing can pass through the outlet 126 and then propagate into the earpiece.

[0056] In an example not shown, an optional starting device is arranged either around or in the end piece or on a wall of the housing. This starting device is configured so that when actuated continuously or following a press, it triggers the starting of the device or its stopping.

[0057] The fluid used may be air, for example sucked in from outside the housing, a mixture of air and water droplets, a liquid such as water, a liquid containing molecules having an active effect on cooling, or a gas, for example neutral such as CO2 contained in a cartridge.

[0058] The temperature control unit is for example configured to cool the fluid if the temperature external to the housing is higher than the target injection temperature of the fluid. In an example where the temperature external to the housing is lower than the target temperature, the temperature control unit can for example be configured to heat the fluid coming from the outside.

[0059] In an example not shown in detail, the temperature control unit comprises a pressurized CO2 cylinder. At the outlet of the cylinder, the CO2 undergoes decompression which cools it. In this example, the fluid will then be propelled by the propellant 130 towards the nozzle through the outlet of the housing 126. The propellant is for example the gas which allows the ejection of the CO2 or, for example, a pump associated with a continuous motor. The speed or the capacity of the pump, or of the gas cylinder, may be chosen so that the flow rate of the fluid at the outlet of the nozzle is between 2 and 10L / min for example, preferably between 5 and 9 L / min, for example approximately 8L / min. In one example, by pressing a starting device the pump will start and after a given time, for example 30s, another press on the starting device may terminate the action of the pump and therefore interrupt the flow of the fluid.

[0060] In another example, the temperature control unit comprises a device for managing the temperature of the fluid by Peltier effect. The Peltier effect device comprises, in operation, for example, a hot flat surface and an opposite cold surface. In this example, the propellant is for example a fan. This fan draws air from outside the housing through the opening 128. This air is then cooled with the temperature control unit 140 and then the cooled air is propelled to the outlet 126 of the housing. In an example not shown using the Peltier cooling device, the propellant is located between the opening 126 and the temperature control unit. In this case, outside air is drawn in and propelled to be cooled by the temperature control unit. The cooled air is then propelled towards the outlet 126.

[0061] In the case where air is used as the fluid with a Peltier device, if the ambient air is lower than the target injection temperature then the Peltier device will be able to heat the fluid rather than cool it.

[0062] In the case where the temperature control unit is a Peltier effect device, it may comprise one or more openings for the propelled or sucked air to flow through.

[0063] In another example where the temperature control unit is a Peltier device, the latter may be arranged against a side wall of the housing so that the fluid flows parallel to the cold surface of the Peltier device.

[0064] In another example, the temperature control unit 140 comprises a cooling body, for example removable relative to the housing, which can be brought to a temperature below 18°C. The cooling body is for example a solid body, for example ice, or else be a body placed in a refrigerator and then placed in the housing before use.

[0065] In another example, the cooling body has a high thermal inertia and by placing the housing, or removably the cooling body, in a cold enclosure, such as a refrigerator, the cold is stored in the cooling body long enough for the fluid to be propelled into the ear.

[0066] In one example, the cooling body is configured to maintain a temperature of between 5 and 18°C, preferably between 10 and 16°C, for example approximately 15°C, for the duration of injection of the fluid.

[0067] In one example, the cooling body comprises a phase change material.

[0068] In the case where the temperature control unit 140 comprises a cooling body then the temperature control unit 140 is not necessarily connected to the battery 150.

[0069] In one example, the thruster 130 includes a first fan arranged between the temperature control unit 140 and the outlet 126 and a second fan arranged between the opening 128 and the temperature control unit.

[0070] In the case where the temperature control unit comprises a pressurized gas cylinder and a pump is used, the flow rate of the pump or gas cylinder may be chosen so that the flow rate of the fluid at the nozzle outlet is between 2 and 10L / min for example and more precisely be approximately 8L / min. In the case where a starting device is implemented, by starting - for example with a press - the starting device or with a command involving wireless communication, the pump will start and after a given time, for example 30s, another press on the starting device can terminate the action of the pump and therefore interrupt the flow of the fluid.

[0071] In the case where the temperature control unit comprises a Peltier effect device and the propellant comprises one or more fans, the speed of the fan(s) may be chosen so that the flow rate of the fluid at the nozzle outlet is between 2 and 10L / min for example and more preferably be approximately 8L / min. In the case where a starting device is implemented, by starting - for example with a press or with a command involving wireless communication - the starting device, the propellant and the Peltier effect device will start, and after a given time, for example 30s, the action of the fan(s) and the Peltier effect device will be stopped and the flow rate of the fluid interrupted.

[0072] The duration during which the temperature control unit and the propellant are active can be defined, for example, using a timer of a control circuit or using commands involving wireless communication, such as for example with the Bluetooth© protocol, or even with one or more presses on the starting device.

[0073] An enlarged view of the thruster 130 is shown in view A.

[0074] [Fig.2] schematically represents an autonomous device for injecting a fluid into an auditory canal according to one embodiment.

[0075] In the example shown, the injection device 100 is similar to that of [Fig.lb] except that it comprises a control circuit 260 (CTRL) and optionally a thermal storage element 240 (FILT) configured to be cooled by the temperature control unit and to constitute a cold source with a high thermal inertia, for example greater than that of the temperature manager.

[0076] In one example, the thermal storage element 240 is formed from a porous metal or metal alloy, for example bronze, aluminum or copper, or for example be formed by a stack of metal plates delimiting openings forming conduits inside which the fluid can pass. In one example, the thermal storage element comprises an internal chamber opening onto a face of the storage element which is oriented towards the temperature control unit. In this example, the chamber can also be in communication with lateral faces of the thermal storage element via channels so as to improve the heat exchange with air for example sucked in by the propellant.

[0077] The control circuit 260 is connected, preferably connected, to the thruster, and / or to the temperature manager 140. In other words, the control circuit is configured to control the thruster, and / or the temperature control unit 140. It is powered by the battery 150 for example. The control circuit comprises for example an integrated circuit or a system on chip comprising one or more memories, one or more processing units (CPU in English), or even inputs / outputs for receiving and / or sending sensor data. The control circuit is for example connected, preferably connected, to the optional starting device to start the thruster 130 and / or the temperature control unit 140 depending on the state of the starting device. In one example, the control circuit optionally comprises a wireless communication module, for example using the Bluetooth® protocol.

[0078] In one example, the control circuit may, for example, control the speed of the fan(s) of the propellant, or, for example, the speed of the motor associated with a pump in the case of the pressure cylinder.

[0079] The control circuit adjusts for example the speed of the fan(s) or the pump or the motor associated with the pump as a function for example of one or more sensors connected to the control circuit 260. These sensors are for example temperature sensors T1 or fluid flow rate sensors. This or these sensors can be placed at the outlet 126 of the housing or between the outlet 126 and the thruster, or between the thruster 130 and the temperature control unit 140, or between the temperature control unit and the opening 128 or, when the thermal storage element is present, between the temperature control unit and the thermal storage element, or between the thermal storage element and the thruster.

[0080] In the example shown, the thermal storage element 240 is arranged between the temperature control unit 140 and the propellant 130. It may nevertheless be arranged between the opening 128 and the temperature control unit 140, or between the propellant 130 and the outlet 126 of the housing. In another example, a filter is arranged between the opening 128 and the temperature control unit 140, and the thermal storage element is arranged between the temperature control unit 140 and the propellant 130.

[0081] In one example, the optional thermal storage element 240 is configured to store the cold produced by the temperature control unit and thereby provide a source of cold with significant inertia. In one example, the thermal storage element 240 extends along a majority of the width of the housing or into a box of the housing 120 so as to form a large thermally inertial mass.

[0082] An enlarged view of the temperature manager 140 and the thermal storage element 240 is shown in view B.

[0083] [Fig. 3] schematically represents an autonomous device for injecting a fluid into an auditory canal according to one embodiment.

[0084] The example of [Fig.3] is similar to that of [Fig.2], except that a flow controller 310 (FLOW_CTRL) is arranged between the thruster 130 and the outlet 126 of the housing. In the example shown, the thermal storage element 240 is not shown, it may nevertheless be present optionally, for example between the thruster and the flow controller 310 or between the temperature control unit 140 and the thruster 130.

[0085] In one example, the flow controller 310 is connected, preferably connected, optionally, to the control circuit 260 so that the control circuit controls the flow rate authorized by the flow controller 310 for example as a function of sensors not shown such as temperature and / or flow rate sensors, or even as a function of the speed of a fan of the thruster.

[0086] The flow controller 310 is for example of the passive type, that is to say that it is for example a narrowed opening in the housing, or one or more blades making it possible to obtain a laminar flow of the fluid. In this case, the flow controller is not necessarily controlled by the control circuit 260.

[0087] In one example, the flow controller includes an adjustable opening. The adjustable opening is, for example, controlled by the control circuit 260. Optionally, this opening can be changed manually.

[0088] In one example, the flow rate is measured using pressure sensors using a venturi effect or a pitot effect on the nozzle 124 or thermal flow meters which use, for example, an area between the outlet of a possible fan and the nozzle. In other examples, hot wire flow meters or optical flow meters measuring the speed of the particles present in the air can be used. In the case of a venturi sensor, a portion of this sensor can be in contact with the fluid inside the housing and another portion in contact with the outside of the housing 120. In another example, the flow sensor comprises several temperature sensors arranged upstream and downstream of the temperature manager and / or the propellant and / or one or more heating stages.

[0089] In one example, the flow controller is configured to be able to obtain a flow rate of the fluid at the nozzle outlet which is between 2 and 10L / min for example and more preferably be approximately 8L / min in the gas where the gas is air or CO2.

[0090] In the example of [Fig.3], one or more filter elements similar to that of [Fig.2] may optionally be present in the housing 120.

[0091] [Fig.4] schematically represents an autonomous device for injecting a fluid into an auditory canal according to one embodiment.

[0092] The example of [Fig.4] is similar to that of [Fig.2] except that the thermal storage element 240 is not shown and / or is not present. In this example, a first temperature sensor T1 is arranged between the outlet 126 of the housing 120 and the thruster 130, and a second temperature sensor T2 is arranged between the temperature control unit 140 and the thruster 130. Such an arrangement makes it possible to calculate a flow rate of the fluid without a specific flow rate sensor.

[0093] [Fig.5] schematically represents an autonomous device for injecting a fluid into an auditory canal according to one embodiment.

[0094] The example shown is similar to that of [Fig.4], except that a heating stage 570 (HOT) is arranged between the thruster and the output 126. In the example shown, a third temperature sensor, connected, preferably connected, to the control circuit 260, is arranged between the heating stage and the output 126.

[0095] The heating stage is configured, for example, to be traversed by the fluid. In one example, the heating element consists of one or more grids of conductive wires.

[0096] The heating stage allows for example to slightly warm the fluid if it is too cold, at the output of the temperature manager, compared to the target temperature which is for example 15°C for an effective reduction of dizziness. The control circuit can be configured to adjust the temperature of the heating stage according to the data from the sensors T3 and / or T2 and / or TL

[0097] [Fig.6] schematically represents an autonomous device for injecting a fluid into an auditory canal according to one embodiment.

[0098] The example of [Fig.6] is similar to that of [Fig.5] except that a mixing stage 630 (MIX) is arranged between the heating stage 570 and the outlet 126. The mixing stage has the function of mixing the fluid in order to homogenize it and allow for better temperature measurement. In one example, the mixing stage is connected, preferably connected, to the control circuit 260.

[0099] In another example, the mixing stage is arranged for example between the propellant and the heating stage or between the temperature control unit and the heating stage.

[0100] In one example, the mixing stage comprises a porous component and / or a fluid agitation element connected to the control circuit.

[0101] A view C, illustrated in another figure, represents an enlarged view of the heating stage 570 and the mixing stage 630.

[0102] [Fig.7] represents a block of the device of figures 2 to 6 according to a mode of realization. More particularly, [Fig.7] represents an example of view A of [Fig.lb],

[0103] In the example shown, the propeller 130 is formed by a fan comprising blades 710 set in rotation by a motor 730 (MOTR). In the example shown, the blades move in a box 720 having a central opening through which the axis of the motor 730 passes, lateral openings for evacuating the propelled fluid and an upstream opening directed towards the opening 128. In the example shown, all or part of the box can be integral with the internal walls 740, for example cylindrical, of the housing 120.

[0104] In an example not shown, the motor 730 is arranged between the blades and the opening 128 or the temperature control unit.

[0105] [Fig.8a] represents a block of the device of Figures 2 to 6 according to one embodiment. More particularly, Figure 8 represents an example of view B of [Fig.2],

[0106] In [Fig.8a], the temperature control unit 140 is in the form of a Peltier effect device, that is to say that under the effect of a voltage and / or a current controlled for example by the control circuit 260 or coming directly from the battery 150, a temperature difference is obtained on two opposite faces of the Peltier device. In one example, a first surface 810 oriented towards the outlet 126 is cooled, which cools the fluid, while an opposite surface 820, oriented towards the opening 128, is heated. In view of the hot surface, a fan or a radiator - not shown - could be arranged on the side of the hot surface to reduce its temperature.

[0107] The Peltier device may contain one or more openings 830 passing through the thickness of the Peltier device so that the fluid can pass through it.

[0108] In the example shown, the thermal storage element 240 is arranged in contact with the cold surface and for example in contact with the internal walls 740 of the housing 120. In operation, the thermal storage element cools progressively with the temperature control unit and then constitutes a cold mass whose thermal inertia makes it possible to effectively cool the outside air drawn in by the propellant and which comes into contact with this thermal storage element.

[0109] [Fig.8b] represents a block of the device of Figures 2 to 6 according to one embodiment. More particularly, [Fig.8b] represents another example of view B of [Fig.2].

[0110] The example of [Fig.8b] is similar to that of [Fig.8a] except that the Peltier device does not necessarily include an opening passing transversely therethrough. The example of [Fig.8b] further includes a box formed of a conduit 892 in thermal contact with the hot face 820 of the Peltier device and a chamber in thermal contact with the conduit 892 and the hot face 820. The example shown further includes a fan 890 configured to draw air from the air outside the box into the chamber 893 or, in another example, to draw the air present in the chamber 893 to the outside.

[0111] This allows the calories to be evacuated from the hot face 820 of the Peltier device.

[0112] In the example shown, openings 880 are arranged laterally in the housing 120 so that outside air can be directed around the thermal storage element 240. A portion of this air also passes through the Peltier device, or touches the cold surface 810 thereof, before entering a chamber of the thermal storage element 240. The air thus trapped cools with the Peltier device and also cools the thermal storage element, which will gradually become a cold mass of high thermal inertia. The air coming from the openings 880 and which passes around the thermal storage element 240 cools in contact with the thermal mass of the thermal storage element and is sucked in by the propellant.

[0113] Filters 870 may, in one example, be present between the openings 880 and the cold surface 810.

[0114] In the example shown, temperature sensors 850 and 860 are arranged respectively at the level of the cold surface 810 and above the thermal storage element 240. They make it possible, for example, to calculate a flow rate of the fluid or to be able to control the Peltier device and / or the fan 890 with the control circuit 260.

[0115] [Fig.8c] represents a block of the device of Figures 2 to 6 according to one embodiment. More particularly, [Fig.8c] represents another example of view B of [Fig.2].

[0116] In the example shown, two fans 897 and 899 are mounted head to tail on either side of the cold and hot faces of the Peltier device. The fan 897 draws air from, for example, lateral openings of the housing and propels the cooled air towards a moisture absorber 833 which surrounds the motor (Motor 2) of the fan 897. The fan 899 draws outside air through the openings 128 located below the housing 120 and propels the drawn air onto the hot surface 820 of the Peltier device. The calories from the hot surface are guided by internal fins 896 of the housing to be evacuated to the outside through other lateral openings 891 of the housing 120.

[0117] In one example, the fans 897 and / or 899 comprise radially arranged fins which make it possible to create a centrifugal action on any water droplets in order to be able to evacuate them or guide them towards the outside.

[0118] [Fig. 9] represents a block of the device of Figures 1 to 6 according to one embodiment. More particularly, [Fig. 9] represents an example of view C of [Fig. 6].

[0119] View C shows a mixer stage 630, a heating stage 570, and a flow controller 310. In this example, the mixer stage 630 includes a optional porous element, and which obstructs the passage of the fluid along the entire width of the housing 120. At the outlet of the porous element, a fan 915 is arranged which sucks in the fluid passing through the porous element 922 and which mixes it.

[0120] The heating stage 570 is for example made up of a grid of conductive wires which is fixed on supports 930 secured to the internal walls 740 of the housing 120.

[0121] The flow controller 310 is for example passive and / or made up of elongated openings so as to create a laminar flow of the fluid. In one example, the flow controller is fixed to the supports 930.

[0122] [Fig. 10] schematically represents in block form an autonomous device for injecting a fluid into an auditory canal according to one embodiment. More particularly, [Fig. 10] applies to the case where the temperature control unit 140 is a cartridge of pressurized gas, for example CO2.

[0123] In the example shown, the device 100 comprises the temperature control unit 140 whose decompressed gas is pumped by a pump 1020 (FD_POMP) driven by a motor 1010 (PUMP_M0TR). The pump 1020 and the associated motor 1010 form the propellant 170. A temperature sensor T1 is placed at the outlet of the pump 1020.

[0124] At the pump outlet, the fluid passes into a heating stage 570. A temperature sensor T3 is placed at the outlet of the heating stage 570.

[0125] The heated fluid then passes through a flow controller 310 before reaching the outlet 126 of the housing.

[0126] The control circuit 260 is connected, preferably connected, to the pump and its associated motor and also connected to the heating stage 570 and the flow controller 310.

[0127] The control circuit controls the pump and its motor as well as the heating stage and the flow controller according to the data from the sensors T1 and T3 to achieve a flow rate of 8L / min for example maintained for 30s at 15°C.

[0128] [Fig. 11] schematically represents in block form an autonomous device for injecting a fluid into an auditory canal according to one embodiment. [Fig. 11] particularly represents the case where the temperature control unit is a Peltier device and the fluid is, for example, air.

[0129] In the example shown, the outside air is for example filtered with a filter 1110. The fluid is then in contact with or passes through the temperature control unit 140 before passing through a mist eliminator and / or the thermal storage element 240.

[0130] At the outlet of the mist eliminator and / or the thermal storage element 240, the fluid is sucked in and propelled by the propellant 130 which is for example a fan and is then heated by passing through or being in contact with a heating stage 570. The fluid is then for example mixed with a mixing stage 630 before being injected at the tip 124.

[0131] The temperature control unit 140, the propellant, the heating stage 570 and the mixer are for example connected and controlled by the control circuit to maintain the air flow rate at the nozzle 124 between 2 and 10 L / min and more precisely 8 L / min for for example 30s and with a temperature of approximately 15°C for example.

[0132] [Fig. 12] represents a self-contained device for injecting a fluid into an ear canal according to one embodiment. The example shown includes the examples described in Figures 7 and 9 which are assembled in series in the housing.

[0133] In the example shown, the control circuit 260 and the battery 150 are arranged in a part of the housing which is placed at the bottom of the device 100.

[0134] In the example shown, the temperature control unit 140 comprises the Peltier effect device whose hot surface is cooled by a fan sucking in outside air through side openings.

[0135] The cold face of the Peltier device is in contact with a thermal storage element 1250. The thermal storage element 1250 comprises, in the example shown, a plurality of stacked plates in which air or liquid drop passages are arranged. These air passages connect, for example, the center to the periphery of the diffuser. The material of the thermal storage element is, for example, a metal or a metal alloy such as aluminum, copper or a metal foam. The material of the thermal storage element is, for example, obtained by sintering.

[0136] The thermal storage element 1250 is for example topped with a thermal insulator 1240.

[0137] Lateral openings 1230 of the housing allow air to enter and is reinjected through an opening made through the radiator 1250.

[0138] The air flow then rises through a separator 1220, and a moisture absorber 1210 such as cotton wool, which can retain water droplets, to then be sucked in by the propellant 130.

[0139] The separator 1220 is for example in the form of a cyclonic separator with tangential inlets, and which has the function of drying the fluid by causing drops to condense by cyclone effect. The liquid water thus obtained is for example trapped in the separator and an extraction device not illustrated is for example provided to eliminate the water thus condensed.

[0140] [Fig. 13] represents in block form an autonomous system 1300 for injecting a fluid into an auditory canal according to one embodiment.

[0141] The system 1300 shown comprises a device as described in the preceding figures and a portable apparatus 1320. The apparatus 1320 comprises, for example, a wireless data communication module configured to exchange data with the device, a unit for processing data from the device, and a display screen. In one example, the apparatus 1320 is a so-called smart mobile phone (smartphone in English).

[0142] The device 100, with the control circuit 260, and the apparatus 1320 communicate unidirectionally or bidirectionally wirelessly, for example with the Bluetooth© or Wifi protocols.

[0143] In one example, the apparatus 1320 sends commands to the control circuit to program the start-up, for example, of the temperature manager and the propellant or other components connected to the control circuit so that the fluid is injected through the nozzle with a given flow rate, at a given temperature and for a given duration. The flow rate, the temperature and the duration may be defined by a user of the apparatus and programmed, for example, via a program, or an application, implemented in the apparatus 1320.

[0144] In one example, the apparatus 1320 is configured to execute an application internal to this apparatus 1320.

[0145] In one example, the device 1320 is configured to execute a remote application (web application in English) from the internet or from an access portal for example.

[0146] In one example, a history of parameters and commands implemented by the apparatus to control the device 100 are stored in the apparatus or are sent via the apparatus to a remote storage element, for example in a database on remote servers.

[0147] In one example, the control circuit sends data relating to the temperatures and / or flow rates measured during operation of the device 100.

[0148] In one example, the application implemented by the device 1320 sends data to the device 100 making it possible to control the start-up of the device 100 and / or the change of parameters such as the flow rate, the temperature of the fluid or even the duration of application of the fluid.

[0149] In one example, the application implemented by the device 1320 makes it possible to control and / or modify the characteristics of the device 100 (flow rate, temperature, treatment duration) depending on the patient and the user feedback. The treatment is thus individualized and capable of being modified during the course of the illness.

[0150] In another example, the application implemented by the device 1320 makes it possible to activate the operation of the device 1320, and / or to execute the instructions. prescribed. The application may also allow the ordering of replacement devices 100 for example and / or associated accessories.

[0151] In another example, the application implemented by the device 1320 makes it possible to renew one's medical monitoring subscription and / or to be informed about the status of the device 100 (for example low battery level) or about the status of the application (loss of connection / update). The application may also be configured to download an update of the control circuit and send it to the control circuit 260 so that it can be updated.

[0152] In one example, the application informs the user of developments in various upcoming products.

[0153] In another example, the application is configured to allow locating its device 100 via the emission of a remote sound or an alarm. In one example, the loss of connection between the device 100 and the apparatus 1320 causes the device 100 to emit a sound.

[0154] In one example, the apparatus 1320, as well as the device 100 with which it is associated, are part of a data processing architecture which makes it possible to centralize and exploit usage data of the device 100 and possibly to establish application protocols of the device having, for example, temperatures, flow rates, and durations different from the initial ones.

[0155] [Fig. 14] represents, in block form, an example of a data processing architecture 1400 using the system of [Fig. 13].

[0156] In the example shown, the architecture 1400 comprises a portal 1420 (HUB) which provides access to a database linked to the device 100 and its use.

[0157] In one example, the portal 1420 exchanges data with at least one of: - a portal accessible to patients 1410 (PORT_PAT), - device 1320, -one or more other devices 1480 (App2) similar to the device 1320 and communicating with a device 1470 (Prod 2) similar to the device 100 or of another type, - a database linked to a public health authority, - 1430 API / SDK type programs linked to third-party applications 1440, - a portal dedicated to healthcare professionals 1460 including sections 1466 (PRESCRIPT) linked to ortho-rhino-laryngologist prescribers, sections 1464 (KI_SPECIAL) linked to physiotherapists, and sections 1462 (SRCH) linked to research institutes.

[0158] In the example illustrated, the application hosted by the device 1320, or remoted on the access portal for example, is for example configured to serve as an interface between the access portal 1420 and the device 100. Other devices 1480 may also contain the same application.

[0159] Through for example the portal 1460, then the access portal and the application implemented by the device 1320, ortho-rhino-laryngologist prescribers will be able to have feedback on patient use (frequency of attacks, number of fluid injections, duration, etc.) which will make it possible to adapt or possibly modify parameters such as the flow rate, temperature or duration.

[0160] This architecture 1400 makes it possible to provide a source of information on the frequency of use of the device 100, the duration of administration of the fluid, the outside temperature, the altitude, or even the location, for medical research. The evolution of the disease or the prevalence can also be studied.

[0161] This 1400 architecture also allows public authorities and other professionals to be able to connect to the public databases of the Ministry of Health, and others, in reading and / or writing mode.

[0162] Finally, for third parties, the provision of a program in SDK or API form makes it possible to exchange or integrate with or into other specialized applications or portals.

[0163] Various embodiments and variations have been described. Those skilled in the art will understand that certain features of these various embodiments and variations could be combined, and other variations will occur to those skilled in the art. In particular, variations of the devices of Figures 1b to 13 may be combined so that, apart from the temperature control unit and the propellant, other elements such as the filter elements, the heating stage, the mixing stage, the flow controller or the temperature or flow sensors are optional and they may all be implemented alone or in combination in addition to the temperature manager and the propellant.

[0164] Finally, the practical implementation of the embodiments and variants described is within the reach of the person skilled in the art from the functional indications given above. In particular, with regard to the different components of the device 100 which may be implemented and / or sized according to the nature of the fluid used.

Claims

Claims

1. Autonomous device (100) for injecting a fluid into an ear canal, comprising a housing (120) adapted to be held in a hand and containing: - a source of electrical energy (150); - a fluid temperature setting unit (140); and - a propellant (130) for the temperature-set fluid towards an outlet (126) of the housing communicating with an ear tip (124).

2. A device according to claim 1, wherein the device (100) delivers a determined quantity of fluid for a defined duration and at a defined temperature.

3. Device according to claim 1 or 2, wherein the housing (120) comprises a control circuit (260) configured to be connected to at least one element of the housing among the temperature control unit (140) and the propellant (130).

4. Device according to claim 3, in which the housing (120) comprises a heating stage (570), for example connected to the control circuit (260), and arranged so as to heat the fluid before the outlet (126) of the housing (120).

5. Device according to claim 3 or 4, in which the housing (120) comprises at least one temperature sensor (T1, T2, T3), or a fluid flow sensor, connected to the control circuit (260).

6. Device according to any one of claims 3 to 5, in which the housing (120) comprises a flow controller (310) of the fluid, connected to the control circuit (260) so that the flow rate of the fluid is controlled by the control circuit (260).

7. Device according to any one of claims 3 to 6, wherein the thruster (130) comprises at least one fan connected to the control circuit (260).

8. A device according to any one of claims 1 to 7, wherein the housing (120) comprises at least one opening (128,880) so that the propellant (130) can draw fluid from outside the housing (120) through said opening (128,880).

9. Device according to any one of claims 1 to 8, in which the housing (120) comprises at least one metallic thermal storage element (240) configured to be in contact with the fluid, said thermal storage element (240) being configured to inertially store cold created by the temperature control unit (140).

10. A device according to any one of claims 1 to 9, wherein the temperature control unit (140) comprises a Peltier element.

11. Device according to any one of claims 1 to 9, in which the temperature control unit (140) comprises a pressurized gas enclosure.

12. Device according to any one of claims 1 to 11, in which the temperature control unit (140) and the propellant (130) are configured so that the flow rate of the fluid at the nozzle (124) of the housing (120) is between 2 and 10 L / min, preferably between 5 and 9 L / min, for example approximately 8 L / min, for a duration greater than or equal to 15 seconds, preferably greater than 20s, for example approximately 30 seconds, and with a temperature of the fluid between 5 and 18°C, preferably between 10 and 16°C, for example approximately 15°C.

13. Device according to any one of claims 3, or 4 to 12 in their dependence on claim 3, in which the control circuit (260) is configured to control at least one element of the housing (120) to which it is connected so that the flow rate of the fluid at the outlet (126) of the housing (120) is between 2 and 10 L / min, preferably between 5 and 9 L / min, for example approximately 8 L / min, for a duration greater than or equal to 15 seconds, preferably greater than 20s, for example approximately 30 seconds, and with a temperature of the fluid between 5 and 18°C, preferably between 10 and 16°C, for example approximately 15°C.

14. A device according to any one of claims 3, or 4 to 13 as dependent on claim 3, wherein the control circuit (260) comprises a wireless data communication circuit.

15. A device according to any one of claims 1 to 14, wherein the fluid is a gas.

16. Device according to any one of claims 1 to 15, in which the fluid temperature control unit (140) comprises a removable cooling body, configured to maintain its temperature between 5 and 18°C, preferably between 10 and 16°C, for example about 15°C, for a fluid injection time.

17. Autonomous system for injecting a fluid into an ear canal, comprising: - a device (100) according to any one of claims 14 or 15 to 16 in their dependence on claim 14; and - a portable apparatus (1320) comprising: a wireless data communication module configured to exchange data with the device (100), a unit for processing data from the device (100), and a display screen.

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