Human Keratin Material Processing System

Abstract

Human Keratinous Materials Treatment System: A human keratinous materials treatment system, including skin and / or hair, comprising a handpiece (2) having: - a treatment head (5) to be placed in contact with the keratinous materials to be treated, defining at least one treatment zone, - at least one fluid circulation circuit (6) used during the treatment, - at least one ultrasonic transducer (13) for emitting acoustic waves into the fluid present in the treatment zone, the system comprising: at least one position and / or orientation detector (20) of the handpiece relative to the keratinous materials to be treated and / or relative to a predefined reference axis, and at least one control unit (19) with which the detector(s) communicate, arranged to act on the operation of the handpiece based on at least one piece of information from the detector(s). Figure for the abstract: Fig. 1

Description

Title of the invention: System for treating human keratin materials Technical field

[0001] The present invention relates to systems for treating human keratin materials, in particular those using ultrasound. Prior art

[0002] Application EP 3 294 469 describes a device for cleaning a surface, comprising a chamber supplied with a liquid and communicating with an outlet conduit opening onto the surface to be cleaned, and an ultrasonic transducer transmitting acoustic energy to the liquid contained in the chamber and the outlet conduit.

[0003] Application ES 2 708 149 discloses a device for cleaning a surface comprising a sonotrode generating ultrasound near a cleaning solution present on the surface, the cavitation making it possible to remove dirt from the surface.

[0004] Patent US8486199 describes a device for treating a surface of a semiconductor wafer comprising a resonator for supplying ultrasonic energy to a treatment fluid containing gas bubbles.

[0005] Document EP 1 645 342 describes a method for cleaning equipment consisting of subjecting a liquid comprising bubbles to an acoustic field.

[0006] Patent KR101152920 describes a skin cleansing device comprising a vacuum pump and intended to be used in proximity to a liquid containing microbubbles on the skin.

[0007] Applications US 2017 0080257, KR 2020 0102956, US 2009 / 318853, JP 2016 214424 and WO 2020 / 029429 disclose methods for cosmetic treatment of the skin, in particular its cleansing, using an ultrasonic device which generates microbubbles in a cosmetic composition applied to the skin to be cleansed.

[0008] Similar devices are disclosed in applications US 2011 / 21328, US 2010 / 010420 and EP 3 634 643, CN206995178 and EP 2 470 310.

[0009] Patent FR 3 116 451 describes a device for cleaning human keratin materials comprising a fluid circulation circuit, a transducer and a treatment head containing the treatment fluid, within which the ultrasonic waves emitted by the transducer propagate. This device may comprise a means for detecting contact of the treatment head with the keratin materials to be treated, for example in order to interrupt the operation of the transducer in the absence of contact. There may be situations where a loss of liquid is observed, leading in particular to a risk of defusing the circulation circuit, which results in reduced effectiveness of the device.

[0010] There is a need to remedy this drawback, and limit the risk of the fluid circulation circuit becoming unprimed.

[0011] There is more generally an interest in limiting the risk of liquid leaking out of the treatment head, either outside the device or internally, for example towards an area of ​​the latter which must be kept dry to ensure reliable operation, for example due to the presence of an electrical circuit.

[0012] There is also a need to improve the user experience and comfort when processing keratin materials, as well as the efficiency thereof, in particular by allowing rapid resumption of normal operating conditions after stopping the system. Summary of the invention

[0013] The invention aims to meet all or part of these needs and has as its subject, according to a first of its aspects, a system for treating human keratin materials, in particular skin and / or hair, comprising a handpiece comprising: - a treatment head to be placed in contact with the keratin materials to be treated, defining at least one treatment zone, - at least one circuit for circulating a fluid, in particular a cosmetic composition, used during the treatment, - at least one ultrasonic transducer for emitting acoustic waves at least into the fluid present in the treatment area, the system further comprising: - at least one detector of movement and / or orientation of the handpiece relative to the keratin materials to be treated and / or relative to a predefined reference axis, in particular the vertical, - at least one control unit with which the detector(s) communicate, the control unit being arranged to act on the operation of the handpiece as a function of at least one piece of information coming from the detector(s).

[0014] By "with which the detector(s) communicate" is meant a communication which can be of any type, for example unidirectional from a detector to the control unit, or bidirectional between the two, the information communicated being able to be analog or digital, or even simply binary.

[0015] The treatment of keratin materials using the system according to the invention may in particular be a cleaning of the skin or hair, a peeling of the skin, the diffusion of active ingredients through the keratin materials, and / or a treatment of certain skin disorders.

[0016] The invention can make it easier to guarantee optimal conditions of use of the handpiece, in particular in terms of treatment efficiency, autonomy, reliability and / or comfort of use.

[0017] In particular, knowledge of the orientation of the handpiece makes it possible to carry out as early as possible one or more actions reducing the risk of loss of priming of the fluid circulation circuit, for example by anticipating, thanks to the detection of an inclination greater than a given threshold, the separation of the treatment head from the area of ​​keratin materials treated or the arrival of the handpiece in an orientation modifying the flow of the fluid in the circulation circuit.

[0018] In particular, the detector(s) sensitive to the inclination of the handpiece during its use make it possible, in examples of implementation of the invention, to stop the circulation of the fluid if the handpiece is inclined in a manner which could lead to a higher risk of fluid loss, in particular leakage towards an area to be protected from the fluid. This makes it possible, for example, to more effectively protect internal elements of the system, in particular electrical elements, from a risk linked to the presence of the fluid, and to further reduce the risk of malfunction.

[0019] The system according to the invention can also make it possible, by limiting the loss of fluid at the level of the treatment zone, to maximize the autonomy and performance of the treatment.

[0020] The system according to the invention also makes it possible to protect the user from an uncontrolled projection of fluid or from a risk of contact for a prolonged period of time of the same area of ​​keratin materials with the treatment head, in particular in the event of an increase in the temperature of the transducer, by detecting the movement of the handpiece relative to the keratin materials and by controlling the operation of the system accordingly.

[0021] Preferably, the handpiece comprises a handle, which may be arranged non-coaxial with the treatment head. The handle may at least partially contain the fluid circulation circuit. Motion and / or orientation detector

[0022] The system may comprise several motion and / or orientation detectors, in particular two or three.

[0023] The detector may be internal to the handpiece. Alternatively, the detector is external to the handpiece.

[0024] When the detector is external to the handpiece, the system may comprise a camera arranged to observe the handpiece, and processing means for determining, at least from the signal delivered by the camera, the movement, position and / or orientation of the handpiece relative to the keratin materials to be treated and / or relative to said reference axis, said detector being in particular connected by a wireless connection to the control unit. This camera can belong to a phone or a connected mirror, for example.

[0025] The detector can be chosen from inclinometers, in particular with a ball or drop of conductive liquid, or accelerometers, in particular MEMS. It is also possible to use a mercury sensor as a detector, in fact the technical characteristics of mercury sensors are suitable for the present invention. However, it is preferable not to use mercury sensors due to their environmental impact.

[0026] The detector can in particular measure the angle of inclination of the handpiece relative to Earth's gravity. The accelerometer can be used to detect movement of the handpiece.

[0027] Preferably, the ball inclinometer is positioned in the handpiece such that it is as close as possible to the axis of rotation of the user's wrist.

[0028] Preferably, the accelerometer is positioned in the handle of the handpiece.

[0029] The detector may include a gyroscope, in particular coupled to an accelerometer, which makes it possible to know both the movement and the orientation.

[0030] The detector may be sensitive to the Earth's magnetic field.

[0031] The motion detector may comprise a time-of-flight laser sensor or a reflected beam detection device and observation of the patterns created, as in optical mice. Alternatively, the detector may be ultrasonic.

[0032] The detector may also include a capacitive or inductive proximity sensor.

[0033] The detector can deliver an analog, continuous or pulsed, or digital signal, which varies according to the orientation and / or movement of the handpiece.

[0034] For example, the detector can emit a pulse for each elementary movement, the movement being determined by counting the pulses emitted.

[0035] The detector may be unidirectional, i.e. measuring the inclination of a single axis. Alternatively, the detector is bidirectional, i.e. simultaneously measuring the inclination of two axes of the handpiece.

[0036] The detector can have a measuring range of ±180°.

[0037] It can have a resolution better than 10°, in particular better than 5°, better than 1°, even better than 0.1°. Control unit

[0038] The control unit may be located inside or outside the handpiece. Alternatively, a portion of the control unit is located inside the handpiece and another portion of the control unit is located outside the handpiece.

[0039] The control unit can analyze the data coming from the movement and / or orientation detector(s), in particular in order to deduce a command to be sent to the transducer and / or to any other element of the handpiece.

[0040] The transducer can be controlled by the control unit. The control unit is in particular arranged to turn the transducer on or off or to modify its power, depending on the data coming from the detector(s).

[0041] The control unit preferably comprises a microcontroller. The control unit may comprise one or more electronic cards, all grouped in the handpiece or not, and capable of communicating with each other when not all grouped in the handpiece by any type of connection, for example RF, optical or wired.

[0042] The external detector can in particular be connected by a wireless link to the control unit, in particular a WIFI or Bluetooth® link.

[0043] The control unit may execute a program that governs the operation of the handpiece, and in particular applies one or more operating instructions, which depend on the movement and / or orientation of the handpiece. Examples of such instructions are given below.

[0044] The control unit may allow the dates of use, the durations of use and / or the identity of the user to be recorded where appropriate. The control unit may, in the event of use deemed too frequent in relation to a predefined threshold, block the system and / or warn the user, in particular via a telephone notification. The control unit may, in the event of use deemed too infrequent in relation to a desired result, warn the user, in particular via a telephone notification. Tank

[0045] The system, in particular the handpiece, comprises at least one reservoir for containing the fluid used during the treatment.

[0046] By "reservoir" we mean any element allowing the fluid to be contained; thus the reservoir can be formed by any type of cavity, by a pocket or a cartridge, that is to say a removable element in the latter case.

[0047] The system may comprise several separate reservoirs, for example a reservoir of fluid to be distributed to the area to be treated and a reservoir for receiving the used fluid which has been at least partially recovered following the treatment. Alternatively, the fluid coming from the reservoir is not recycled by the system or is returned to the same reservoir from which it came, for example at an end of the latter opposite that from which the sample is taken.

[0048] The tanks may be separated from each other by one or more filters. Different sub-parts of the tank(s) may be separated by one or more filters.

[0049] The reservoir(s) may or may not be separable from the system, in particular from the handpiece. The reservoir(s) are, for example, single-use, and may be replaced when there is no more fluid, or when the recovered fluid must be evacuated.

[0050] Tanks of varying capacity can also be provided depending on the treatment to be carried out. carried out on keratin materials, the system being able to be configured to allow the user to set up the tank of his choice, chosen from several with different respective capacities.

[0051] The handpiece preferably comprises at least one electric pump for circulating the fluid between the reservoir(s) and the keratin materials to be treated. The pump is preferably controlled by the control unit.

[0052] The control unit may be arranged to act on the pump to reduce or increase the flow rate of the fluid in the fluid circulation circuit depending on the data from the detector. For example, when the system detects that it is no longer in contact with the keratin materials to be treated, the operation of the pump may be modified to save energy and / or reduce the risk of leakage.

[0053] When the system comprises a pump for circulating the fluid to the treatment zone, the system advantageously comprises, so as to facilitate the cleaning and / or decontamination of the tank, a selector which makes it possible to change the circulation of the fluid from a first configuration where the circulation takes place between the tank(s) and the treatment zone, and a second configuration used for purging and / or filling the tank(s).

[0054] The reservoir(s) may comprise one or more compartments, in particular several compartments integrated into the same body and separated by a wall, or several communicating compartments, for example connected by a channel. The reservoir(s) may comprise a compartment containing the fluid to be distributed to the area to be treated, and a compartment collecting the fluid used, for example for recycling. The two compartments may communicate through a filter for example.

[0055] The reservoir(s) may also comprise several compartments in which different compositions may be stored. These compositions may be mixed at the time of use and some may be solid and / or in the form of rapidly soluble powders.

[0056] For example, a reservoir may comprise a first compartment containing a solid composition, for example in the form of powder, for example crystals, and a second compartment comprising a fluid composition, the two compartments being able to communicate during use so that the fluid composition solubilizes the solid composition.

[0057] The first compartment may also comprise a mixture of a suspended solid composition and a liquid in which the solid composition is insoluble, the fluid composition of the second compartment solubilizing the mixture during use of the system.

[0058] The tank(s) may include one or more filters for filtering the impurities from the collected fluid before redistributing it to the area to be treated. The tank may still have a vent.

[0059] The reservoir(s) may contain a gas and / or a liquid, in particular under pressure, making it possible, for example, to unblock the fluid circulation circuit during a cleaning phase of the system or to increase the flow rate of the fluid in the fluid circulation circuit.

[0060] The reservoir(s) may comprise a thermal device for heating or cooling the fluid, in particular an electrical resistor. This thermal device may be controlled by the control unit, depending on the movement or orientation of the handpiece. Heating all or part of the fluid may reduce its viscosity, which may in particular allow better circulation of the fluid and prevent premature clogging of the fluid circulation circuit.

[0061] The reservoir(s) are preferably compatible with one or more liquids of various natures, in particular different types of compositions, miscible or not, and cleaning liquids.

[0062] The reservoir(s) are preferably at least partially transparent, which allows the user to visually see their filling level and / or the level of cleanliness of the fluids they contain.

[0063] The reservoir(s) may be deformable, or made of rigid material, in particular glass or plastic. A reservoir may include a removable part, and thus be of adjustable volume depending on what is desired. The reservoir(s) may be provided with valves allowing them to be disconnected from a housing receiving them without loss of fluid.

[0064] The reservoir(s) may be in the form of cartridges, generally cylindrical or otherwise shaped, or flexible pouches.

[0065] At least one reservoir has a capacity for example between 1 ml and 200 ml, better between 1 and 50 ml.

[0066] The reservoir(s) may comprise one or more fluid non-return devices, for example at least one valve which opens automatically when the reservoir is placed in a corresponding housing on the handpiece or its support, and which closes automatically when the reservoir has been separated from the handpiece or the support, to prevent liquid loss. Fluid circulation circuit

[0067] The circulation of the fluid can be carried out with or without recirculation, continuously or intermittently.

[0068] The fluid circulation circuit typically comprises a plurality of conduits, which are connected in a suitable manner to achieve the desired fluid circulation, for example with end-to-end or parallel connections, being connected together by appropriate connections.

[0069] The fluid circulation circuit connects together the different parts of the system concerned with the circulation of the fluid, such as the treatment head, the pump(s) and the fluid reservoir(s), as well as the filter(s) or other purification or disinfection system(s).

[0070] The fluid circulation circuit may comprise one or more additional outlets and / or one or more valves, making it possible to regulate the circulation of the fluid, and in particular to evacuate excess fluid from the fluid circulation circuit.

[0071] The fluid circulation circuit may include a water intake allowing it to be charged with water and / or cleaned from an external network.

[0072] The handpiece may comprise a solenoid valve connected to the control unit. The control unit is preferably arranged to control the solenoid valve based on data from the detector in order to reduce or increase the flow rate of the fluid in the fluid circulation circuit.

[0073] The control unit may in particular be arranged to reduce the risk of loss of priming of the fluid circulation circuit in the event of separation of the treatment head from the area of ​​keratin materials treated, by interrupting the pump early and / or by actuating one or more solenoid valves preventing the entry of air into the conduits communicating with the treatment chamber located at the level of the treatment head.

[0074] The reservoir(s) and the fluid circulation circuit enabling the circulation of the fluid may belong to the same assembly forming a refill, capable of being handled as a single unit for its installation on the system and removal from the latter; refilling with product is then made easier. Such a refill may, if necessary, have a mechanical interface with the pump or other drive mechanism, enabling, when actuated, a circulation of product to be established from the refill to the treatment zone.

[0075] The refill assembly may be arranged to be fixed, for example by snap-fastening or otherwise, in the system, for example in the same housing as that containing another component of the system, for example an electric generator. Treatment head

[0076] The treatment head is preferably arranged to distribute the fluid over the area to be treated via at least one fluid outlet, and / or to recover at least partially the fluid used from the area to be treated via at least one fluid return inlet.

[0077] The treatment head may be supplied by one or more fluid conduits from one or more reservoirs.

[0078] The treatment head may comprise the aforementioned detector, or one of them when the system comprises several.

[0079] The treatment head may in particular comprise a detector sensitive to the movement of the treatment head and / or to the orientation of the treatment head relative to the keratin materials for example.

[0080] The treatment head may also include, if the movement and / or orientation detector(s) do not allow this information to be delivered, a detector sensitive to contact or proximity of the treatment head with the materials to be treated.

[0081] The fluid outlet and / or inlet are for example connected to the aforementioned fluid circulation circuit. In particular, the fluid circulation circuit may be arranged relative to the treatment head so as to distribute and / or partially recover the fluid in front of and / or behind the emission surface of the sonotrode of the transducer, for example through at least one orifice on the emission surface.

[0082] Preferably, the transducer extends at least partially into the treatment head. In particular, it may be housed there entirely.

[0083] The treatment head may comprise a heating element such as an electrical resistor, for heating the composition for example, and / or a light source arranged to illuminate the treatment area during use and / or activate certain constituents of the fluid in which the cavitation occurs.

[0084] The treatment head can be arranged to deliver micro-currents to the keratin materials, in particular when treating them, through the fluid.

[0085] The treatment head may comprise at least one filter, which is used for example to filter the composition which is recycled, this filter being for example arranged on the return path of the fluid.

[0086] The treatment head may comprise a porous material and / or one capable of releasing or diffusing a fluid, in particular an open-cell foam, preferably carried by a removable support, in particular in the form of a frame.

[0087] The treatment head may comprise distribution orifices, such as slots, closed at rest, opening under the pressure of the upstream composition, and having an elasticity allowing an increase in volume during filling and a distribution of the fluid continuing after the end of the filling action.

[0088] The treatment head may comprise a chamber for storing a sufficient quantity of fluid to allow the treatment of keratin materials and the contact of the bubbles with the surface to be cleaned.

[0089] The treatment head may comprise several compartments, independent or communicating with each other.

[0090] The treatment head may comprise parts made of flexible and / or deformable material, in particular elastically deformable, in particular for the parts in contact with the keratin materials to be treated.

[0091] The treatment head can be of various shapes, depending on the intended use for the system.

[0092] The treatment head may comprise one or more removable parts, easily detachable by the user of the system, preferably without the use of tools. This facilitates cleaning between uses.

[0093] The treatment head can be oriented in different ways, in particular it can rotate around an axis, or be mounted on a ball joint. At least part of the treatment head, in particular the emission surface, can pivot through 360°.

[0094] The removable part(s) of the treatment head may be attached to the rest of the system via any suitable attachment means, in particular a ball joint, spring, or piston. The treatment head is preferably mobile; in examples it may tilt or be rotated through more than 180°, 270° or 360° around at least one axis.

[0095] The transducer is preferably arranged relative to the treatment head so as to keep the acoustic wave emission surface of the sonotrode away from the surface of the keratin materials to be treated.

[0096] Where appropriate, the transducer is movable relative to a fixed part of the system, for example driven by a rotational or back-and-forth movement.

[0097] The treatment head may comprise a tip, preferably removable, in contact with the keratin materials to be treated.

[0098] The tip, when removable, is for example chosen according to the use, for example by selecting the type, size, hardness and / or shape best suited to the morphology of the area to be cleaned. User interface

[0099] The system, in particular the handpiece, may comprise a user interface, which may comprise a sound output and / or a light indicator and / or a display screen and / or a haptic device.

[0100] The system, in particular the handpiece, may thus comprise a sound output arranged to deliver information audible to the user. The sound output is preferably connected to the control unit, the information delivered by the sound output preferably being instructions for the movement, positioning and / or orientation of the handpiece in response to data coming from the detector(s).

[0101] The system, in particular the handpiece, may also comprise, as mentioned above, a light indicator and / or a display screen arranged to deliver information visible to the user, for example a flashing light or text. The light indicator and / or the display screen are preferably connected to the control unit, the information delivered preferably being instructions for the movement, positioning and / or orientation of the handpiece in response to data from the detector.

[0102] When the system, in particular the handpiece, comprises a haptic device, the latter can be arranged to interact mechanically with the user, in particular by vibration, in order to deliver information to him. The haptic device is preferably connected to the control unit, the information delivered preferably being instructions for the movement, positioning and / or orientation of the handpiece in response to data coming from the detector.

[0103] The system makes it possible, thanks to the sound output, the light indicator, the display screen, and / or the haptic device, to guide the user in the use and / or manipulation of the system, in particular so that the user maintains the treatment head in a predefined orientation corresponding to optimal operation, by warning the user as soon as he deviates from the optimal conditions of use.

[0104] The system may vocally guide the user during use of the system, the system may in particular guide the user for handling the system, its use, its cleaning, its disassembly, its storage, and / or its maintenance. Handpiece

[0105] By "handpiece" is meant a device whose size allows it to be manipulated with one hand by the user. The handpiece may comprise a surface adapted to be grasped by the user's hand and forming a handle, as mentioned above.

[0106] The detector(s) may be part of the handpiece, as indicated above.

[0107] The same applies to the control unit.

[0108] The handpiece may include in particular at the treatment head a guide and / or combing member, a tip, a grid, one or more spacers, and / or a flexible lip.

[0109] The handpiece can be manipulated in all directions, it can be manipulated with the head down or with the head up for example.

[0110] At least one source of UV radiation may be located inside the handpiece, so as to expose to UV radiation at least one internal surface of the reservoir or a portion of the fluid circulation circuit, and / or a surface of the treatment head in contact with the fluid.

[0111] The reservoir(s) may be arranged in the handpiece, in particular in its handle, or at least partially outside the handpiece. This may facilitate their disassembly, in particular to position them on a support cradle for the handpiece, when the latter is not in use.

[0112] The handpiece is preferably powered by an electric battery, but can also be connected to a power cord. The battery can be recharged directly by a power cord or by a support on which the handpiece is placed.

[0113] The system, in particular the handpiece, may include on its surface information in the form of engravings intended for the user and helping in the use and handling of the system. The engravings may be arrows, pictograms, acronyms, aids for visually impaired people, such as braille. Support

[0114] The system may comprise a support arranged to receive the handpiece when the system is not being used for treating keratin materials. This support may be in the form of a cradle on which the handpiece is placed when not in use for treating keratin materials.

[0115] The support is in particular arranged to electrically power the handpiece when the latter is received in the support, the detector preferably being arranged to detect the presence of the handpiece on the support. The support can make it possible to recharge a battery of the handpiece, used to power the electronic circuit ensuring its operation, and / or to store the handpiece, in particular by protecting the treatment head from dirt.

[0116] The holder may be arranged to allow storage of internal and / or external parts of the handpiece, and / or accessories, including a brush, a replacement head, a new reservoir, and / or cartridges of ancillary products.

[0117] The support may include a transformer or a converter connected to the electrical network.

[0118] The support may comprise at least one UV radiation source arranged to emit UV radiation onto the treatment head.

[0119] When the reservoir is separable from the handpiece, it is advantageous for the support to have a housing allowing the reservoir to be stored, in particular with its opening facing downwards, and for the support to also be able to allow the handpiece to be stored thereon, both when the reservoir is in place on the handpiece, and when the reservoir has been detached from the handpiece and installed in the corresponding housing of the support.

[0120] The control unit can be arranged to detect, thanks to at least one piece of information delivered by the detector, the placement of the handpiece on its support, and to switch to a predefined state.

[0121] The system may be arranged to cause automatic calibration of the detector(s) when the handpiece rests on the support. System

[0122] Preferably, the system is for non-therapeutic purposes, in particular for carrying out a cosmetic treatment.

[0123] The system according to the invention can, if desired, effectively treat both exogenous impurities and endogenous impurities or defects, while meeting certain environmental requirements and safety standards in force.

[0124] At least part of the system can heat and / or diffuse light, and / or cool, this making it possible, for example, to activate certain compounds present in the fluid, in particular in the cosmetic composition.

[0125] The system, in particular the handpiece and / or the support, can vibrate at least in part, this making it possible in particular to dislodge certain dirt blocked in the reservoir, and / or the fluid circulation circuit, for example in the pump.

[0126] The system can be associated with additional gripping means, for example additional hands, arranged to allow certain people with disabilities to use it.

[0127] The system may include Braille writing, particularly on certain parts of the handpiece, the support, and / or an external charger of the system.

[0128] Process for treating human keratin materials

[0129] The invention also relates, according to another of its aspects, to a method for the cosmetic treatment of keratin materials by means of a system as defined above, comprising the exposure of at least one area of ​​the keratin materials to ultrasound emitted by the transducer.

[0130] The method preferably comprises driving the handpiece in a vertical up-and-down movement in the area to be treated, this movement preferably being carried out by maintaining the handpiece in a predefined orientation, for example head up. The fact that the handpiece is head up during treatment can reduce the risk of losing the fluid circuit and / or the risk of loss of liquid.

[0131] The longitudinal axis of the handpiece is preferably inclined during the vertical movement thereof, relative to the vertical, by an angle less than or equal to 60°, preferably less than or equal to 45°, towards the front or rear of the handpiece, and / or by an angle less than or equal to 60°, preferably less than or equal to 45°, on the side of the handpiece.

[0132] By "front of the handpiece" is meant the face of the handpiece facing the keratin materials to be treated and by "rear of the handpiece" the opposite face. Operation control method

[0133] The invention also relates, according to another of its aspects, to a method for controlling the operation of a system as defined above, comprising: (a) detection of handpiece movement and / or handpiece orientation by the detector, (b) transmitting the detection information obtained in step (a) to the control unit, (c) sending at least one instruction based on the detection information, from the unit control to the pump and / or transducer and / or solenoid valve and / or a user interface.

[0134] The instruction sent to the pump can be its stopping, its starting or a modification of its flow rate.

[0135] The instruction sent to the transducer can be its stopping, its starting or a modification of the emission power of the acoustic waves.

[0136] The instruction sent to the solenoid valve can be its degree of opening.

[0137] The instruction sent to the sound output may be the sound emission of a beep or a sentence stating a brief operating instruction for the system.

[0138] The instruction sent to the light indicator can be a flashing light and / or colored lighting in a predefined color.

[0139] The instruction sent to the display screen may be the display of a message indicating a brief operating mode of the system. The message may appear continuously or intermittently, in particular by flashing.

[0140] The instruction sent to the haptic device being a vibration, continuous or discontinuous.

[0141] The method may include detecting the movement and / or orientation of the handpiece, for example in order to: - send a message to the user to cause him to move the handpiece in a predefined movement, when the system detects that the user is moving the handpiece in a movement that could lead to poorer treatment performance, for example a movement that is too slow or too fast, or too erratic, - interrupt the operation of the transducer in the event of detection of prolonged immobility of the treatment head in contact with the treated area, which may subject the user to a feeling of discomfort due, for example, to the temperature of the transducer, - interrupt the operation of the handpiece if a movement is detected which could correspond to it falling, - bring the handpiece into a predefined state, for example standby, in the event of detection of immobilization corresponding to the handpiece coming onto the support, and / or - trigger one or more predefined actions depending on the orientation of the handpiece, for example acting on the pump flow rate and / or on one or more solenoid valves in the event of detection of an orientation deviating from a predefined value from the vertical. Brief description of the drawings

[0142] The invention may be better understood by reading the detailed description which will follow, non-limiting examples of implementation thereof, and upon examination of the attached drawing, in which:

[0143] [Fig.l] schematically and partially illustrates an example of a system according to the invention,

[0144] [Fig.2] illustrates schematically and partially the handpiece of the system of [Fig.l],

[0145] [Fig.3] illustrates schematically and partially the system of [Fig.l] with the reservoir separate from the handpiece,

[0146] [Fig.4] illustrates schematically and partially the system of [Fig.l] in the form of a block diagram,

[0147] [Fig.5] illustrates schematically and partially the inclination of the handpiece of the system of [Fig.l],

[0148] [Fig.6] illustrates schematically and partially the preferential location of a ball sensor in the system of [Fig.l],

[0149] [Fig.7] illustrates schematically and partially the preferential location of an accelerometer in the system of [Fig.l],

[0150] [Fig.8] illustrates schematically and partially the preferential location of an accelerometer with gyroscope in the system of [Fig.l],

[0151] [Fig.9] is a schematic view of an example of a system comprising the handpiece and an external sensor comprising a camera and forming part, for example, of a connected mirror or a telephone. Detailed description

[0152] Figures 1 to 8 illustrate a system 1 for treating the skin, according to the invention, comprising a handpiece 2 and a support 3 on which it can be placed when not in use for treating keratin materials. Handpiece

[0153] The handpiece 2 comprises a handle 4, a treatment head 5, a circuit 6 for the circulation of a composition C and at least one reservoir 7 containing this composition C.

[0154] The reservoir 7 makes it possible, during operation of the system, to compensate for any losses in composition, in the event of non-recycling of part of it.

[0155] The reservoir 7 is preferably separable from the handpiece, as illustrated in [Fig. 3]. Alternatively, the reservoir 7 is not separable from the handpiece.

[0156] The circuit 6 comprises a delivery pump 11, shown schematically in [Fig.4]. The pump 11 may have any type of drive, in particular manual or electric, preferably electric. It may be of various types. The pump 11 is, for example, a volumetric or centrifugal pump, in particular peristaltic, with membrane, piston, or a combination of several types. The pump 11 can be powered by direct or alternating current. Preferably, the supply voltage of the pump 11 is less than 50V, being for example powered by a voltage ranging from 5 to 12V. The pump 11 is preferably compatible with liquids of various types, in particular aqueous, oily, mixed liquids, liquids comprising particles or suspended charges, or even polymers. The drive of the mechanism of the pump 11 can be done directly by a motor or in a reduced manner. When the drive is manual, the system 1 can include a handle which is actuated by the user to operate the pump 11. Preferably, the pump 11 is configured to ensure a fluid flow rate between 0.01 mL and 15 mL per second. The pump 11 can be removable, or not.The pump 11 may generate negative and / or positive pressure on the fluid to allow the fluid to circulate and come into contact with the skin. The pump may also be used for internal cleaning of all or part of the system. The pump 11 may contain a filter in one or more parts. The pump 11 may be mechanically or electrically isolated in the system 1, for example to be removed from the system 1 for cleaning.

[0157] The treatment head 5 comprises a surface 10 in contact with the composition C, the treatment head 5 being arranged to deliver the composition C to an area of ​​the keratin materials to be treated. The composition exits the treatment head 5 through a first opening 101 of a conduit 6a. The handpiece 2 can be moved along the area to be treated and the composition C which is delivered through the opening 101 may not be recycled. Alternatively, recycling of the composition C is carried out, the composition exiting through the opening 101 recirculating in the circuit 6, and optionally the reservoir 7, after being reinjected into the circuit 6 through a second opening 102 of a conduit 6b, present on the treatment head 5.

[0158] The conduit 6b can communicate with a suction pump 30, as illustrated in [Fig. 4], for example an electric pump, which can send the discharged composition C into a treatment and purification unit 40, which allows the composition C to be recycled with a view to being returned to the keratin materials to be treated, the composition C then circulating at least partly in a closed circuit. The treatment and purification unit is for example a filtration system comprising one or more filters arranged to stop particles suspended in the composition, such as skin debris removed during cleaning. A filtration system is for example arranged between the suction pump and the reservoir 7, such that the composition C is returned to the reservoir 7 after filtration.

[0159] The handpiece may comprise, where appropriate, around the openings 101 and 102 of the treatment head 5, a sealing element 103, shown schematically in [Fig.4], such as a flexible lip, to contain the composition C when the head is applied to the skin, and facilitate its return through the duct 6b. The lip can be made up of sub-elements between which the composition can be recovered.

[0160] The treatment head 5 comprises at least one transducer 13 emitting acoustic waves and a sonotrode, the surface 10 in contact with the composition being for example defined by a free end of the sonotrode. Bubbles can be generated in the composition C thanks to the acoustic waves due to the power and frequency of the acoustic waves.

[0161] The transducer 13 may be powered by an electrical source with direct or alternating current. The acoustic power delivered by the transducer 13 may vary depending on the supply voltage of the transducer and / or depending on the current supplying the transducer, in particular its direct or alternating nature.

[0162] The emission surface 10 of the acoustic waves towards the liquid medium may comprise reliefs or engravings where the bubbles can originate at different levels along the longitudinal axis of the transducer 13. In particular, these reliefs may offer nucleation sites at their top and at their base. The reliefs may allow a more homogeneous production of the bubbles. These reliefs may also promote the collapse of the bubbles, because the differences in levels along the longitudinal axis make it possible to generate relatively extensive cavitation zones, not limited to a single plane. In addition to the reliefs of the emission surface 10 which contribute to improving the production of the bubbles, the emission surface may have reliefs which pursue another purpose, for example exercising an action of retaining the fluid or cleaning the zone to be treated.These are, for example, reliefs made of a flexible material, for example hairs, in particular flocking hairs.

[0163] The handpiece 2 further comprises an electronic circuit 14.

[0164] The electronic circuit 14 comprises in particular a control unit 19 and one or more sensors 20 for movement and / or orientation of the handpiece 2 relative to a reference axis, in particular the vertical, this or these sensors 20 communicating their measurements to the control unit 19. This or these sensors can provide information on the position of the handpiece relative to the keratin materials, or alternatively be supplemented by one or more position sensors.

[0165] The control unit 19 controls the operation of the pump 11, the suction pump 30, a battery 18 supplying the system (in particular its load), and the transducer 13.

[0166] As illustrated respectively in Figures 5A and 5B, the sensor(s) 20 can measure the inclination a in side view and the inclination [3 in front view of the handpiece 2, relative to the vertical V.

[0167] The sensor(s) 20 can also detect when the handpiece 2 is received on the support 3, for example by detecting the orientation given to the handpiece. hand by the support and the absence of movement of the handpiece.

[0168] The sensor(s) 20 can also detect when the surface 10 is in contact with keratin materials.

[0169] The control unit 19 is connected by a connector to an electronic generator 16, supplying in particular the transducer 13. This generator 16 comprises for example an oscillator and a power stage.

[0170] The control unit 19 may only start the pump 11 and / or the suction pump 30 and / or the emission of acoustic waves by the transducer 13 when the surface 10 is in contact with the keratin materials to be treated, in particular in a manner which allows the composition to be recycled. The control unit 19 may allow a progressive start, in particular in stages, of the pump 11, the pump 30, and / or the transducer 13, this being able to allow a progressive increase in power of these different elements.

[0171] The control unit 19 may also only start the pump 11 and / or the suction pump 30 and / or the emission of acoustic waves by the transducer 13, when the handpiece 2 is used correctly, comfortably, with a suitable movement and with an orientation a and [3 which cannot cause leakage of cosmetic composition inside and / or outside the handpiece 2. Otherwise, if the control unit 19 considers that there is a risk of leakage, it may stop the pump 11 and / or the suction pump 30 and / or the transducer 13.

[0172] Furthermore, if the control unit 19 considers that there is a risk of discomfort for the user, in particular due to excessively prolonged contact of the treatment head 5 with the same area of ​​keratin materials, it can stop the pump 11 and / or the suction pump 30 and / or the transducer.

[0173] The control unit 19 can also send an instruction to the pump 11 and / or the suction pump 30 in order to reduce the flow rate of the fluid in the circuit 6, and / or send an instruction to the transducer 13 in order to reduce the power of the ultrasonic waves.

[0174] The control unit 19 can also communicate with an optical detector, not shown, making it possible to detect the presence of a compound to be removed from the surface of the keratin materials, and possibly determine the quantity present.

[0175] The control unit 19 also communicates with a human-machine interface 17 comprising a display screen 171, control buttons 172 and indicator lights 173; it can also communicate via a wireless link with a terminal such as a mobile phone. The indicator lights 173 can provide information to the user on the operating status of the system and / or its operating mode, in particular using colored LED lighting and / or flashing.

[0176] The indicator lights 173 and / or the display screen 171 can emit, in the form of text and / or other display and / or colored and / or flashing light, an instruction of use of the system and / or a security alert to the user. In particular, said instruction is issued based on the measurements taken by the sensor(s) 20.

[0177] The human-machine interface 17 also makes it possible to carry out a remote diagnosis of the system, to reprogram it, to upgrade its software, and / or to automatically send commands for the delivery of accessories to replace used accessories, cleaning and / or treatment products.

[0178] The human-machine interface 17 can make it possible to adjust certain operating parameters of the system 1, for example the intensity with which the acoustic waves are emitted.

[0179] The control unit 19 may, as indicated above, allow the dates of use, the durations of use and / or the identity of the user to be recorded where appropriate. The control unit 19 may, in the event of use of the system deemed too frequent in relation to a predefined threshold, block the system 1 and / or warn the user, in particular via notifications sent to a telephone. The control unit 19 may, in the event of use of the system deemed too infrequent in relation to the desired result, warn the user, in particular via notifications sent to a telephone.

[0180] Too frequent use of system 1 may in particular lead to irritation of keratin materials. Too infrequent use of system 1 may limit the effects of the treatment on keratin materials and may not allow the desired result to be achieved.

[0181] The control unit 19 can also control a sound output 15, in particular located on the handpiece. The sound output makes it possible to issue operating instructions and / or safety alerts intended for the user, in particular based on the measurements taken by the sensor(s) 20.

[0182] The battery 18 may be removable, it may be used to power the entire system 1, or only a part, in particular the pump 11. The battery 18 may be of various types, for example Li-ion or NiMH, preferably of a type suitable for humid conditions or which can be immersed in a liquid at least partially. The battery 18 is preferably rechargeable. The battery 18 is preferably selected to ensure, without having to be recharged, the power supply of the system 1 during several consecutive treatments, or even several treatments and cleaning of the system 1.

[0183] The handpiece 2 may further comprise a solenoid valve, not shown in the figures, making it possible to modify the flow rate of cosmetic composition in the circuit 6 or to close a conduit thereof. The solenoid valve is preferably controlled by the control unit 19, and the instructions sent to it preferably depend on the measurements taken by the sensor(s) 20. Support

[0184] The support 3 comprises, as illustrated in [Fig. 3], a first housing 8 for receiving the handpiece 2 and a second housing 9 for receiving the reservoir with an opening of the reservoir 7 facing downwards. The reservoir 7 can be received in the housing 9 of the support, while the handpiece 2 separated from the reservoir 7 is received in the housing 8 of the support 3.

[0185] The support may include a fluid outlet, not shown, allowing in particular the fluid to be evacuated in the event of overflow. The housing 9 may include a fluid outlet allowing the fluid to be evacuated when the reservoir 7 is received in the housing 9, in particular for the purpose of drying. The fluid outlet may be located under the support 3 and / or on a lateral part of the support 3, preferably at a level lower than the opening of the reservoir 7 facing downwards in the housing 9.

[0186] The system is for example charged using a USB port (not shown), in particular arranged on the support 3. The support 3 comprises for example, as illustrated, a first connector 32 and the handpiece 2 a second connector 22 arranged to connect to the first connector 32 when the handpiece 2 is received on the support 3, this connection allowing the handpiece 2 to be charged. The connectors 22 and 32 may be connectors of which at least one is spring-loaded.

[0187] Alternatively, the handpiece 2 can be charged by induction when it is received on the support 3.

[0188] The battery 18 can also be removed and charged separately.

[0189] The support 3 may comprise a part of the electronic circuit 14, this in particular making it possible to lighten the handpiece 2.

[0190] Use for the treatment of keratin materials

[0191] System 1 can be used for the treatment of keratin materials, for example skin.

[0192] The treatment head 5 is thus brought into contact with the keratin materials by the user manipulating the handpiece 2, and the latter can start the system 1 while the treatment head is applied against the keratin materials.

[0193] The composition C coming from the reservoir 7 circulates in the circuit 6, in particular in the conduit 6a, by driving the pump 11. The composition C circulating in the conduit 6a is released on contact with the keratin materials through the opening 101.

[0194] The transducer 13 generates acoustic waves allowing the formation of bubbles within the cosmetic composition C, and their collapse, thus allowing the desired treatment of the keratin materials.

[0195] Composition C is reinjected, at least in part, into circuit 6, in particular thanks to the suction pump 30. Composition C enters the treatment head 5 through the opening 102 to be sent to the treatment and purification unit 40.

[0196] At the outlet of the treatment and purification unit 40, the composition C is returned in tank 7.

[0197] The user drives the handpiece in a substantially vertical movement from top to bottom, for example on the face or body, with the treatment head 5 at the top, in contact with the keratin materials. The user holds, for example, the handpiece 2 with an orientation such that its longitudinal axis O is inclined, relative to the vertical V, by an angle a less than or equal to 45° and / or by an angle [3 less than or equal to 45°.

[0198] The control unit 19 can be arranged to detect when the orientation of the handpiece deviates from the operating conditions recommended above, and warn the user via the interface 17. The control unit can also act on the circuit 6 and / or the transducer 13 in order, for example, to stop their operation. Sensors

[0199] The movement and / or orientation sensor(s) 20 may be chosen from ball sensors 21, accelerometers 23 and cameras 24, among others.

[0200] A ball sensor 21 consists of a steel ball which closes an electrical contact from a certain inclination. The ball sensor 21 is advantageously located in the handle 4 of the handpiece 2, as close as possible to the center of rotation of the wrist, in order to reduce the effects of centrifugal force, in the zone X illustrated in [Fig.6]. It acts in particular for an inclination of the handpiece of ± 30° with an accuracy of ± 10°.

[0201] A three-axis accelerometer 23 can act as an orientation sensor because gravity acts as a constant acceleration. The three-axis accelerometer 23 is advantageously located in the handle 4 of the handpiece 2, as close as possible to the center of rotation of the wrist, in order to reduce the effects of centrifugal force, in the zone Y illustrated in [Fig.7]. It acts in particular for an inclination of the handpiece of ± 20° with an accuracy of ± 5°.

[0202] The three-axis accelerometer 23 can be coupled to a gyroscope, this making it possible to determine the position of the handpiece and thus to eliminate errors linked to centrifugal force. The three-axis accelerometer 23 coupled to the gyroscope can therefore be located anywhere in the handpiece, in the zone Z illustrated in [Fig.7]. It acts in particular for an inclination of the handpiece of ± 20° with an accuracy of ± 2°.

[0203] The three-axis accelerometer 23 coupled to the gyroscope can further be coupled to a three-axis compass, this making it possible to limit the drift of the position over time. The three-axis accelerometer 23 coupled to the gyroscope and the compass can also be located anywhere in the handpiece, in the zone Z illustrated in [Fig.7]. It acts in particular for an inclination of the handpiece of ± 20° with an accuracy of ± 1°.

[0204] The movement and / or orientation sensor 20 may also comprise at least one camera 24, as mentioned above.

[0205] This or these cameras 24 can be mounted on the handpiece 2, and image the environment outside the handpiece 2; the control unit 19 can then be arranged to calculate from the images provided, in particular by stereovision, the movement of the handpiece 2.

[0206] The camera(s) 24 may also be external to the handpiece 2. The camera(s) 24 are preferably located in the user's immediate environment, the camera(s) 24 are in particular fixed to the walls and / or the ceiling of the room in which the system is used. The camera(s) 24 may be connected or belong to one or more devices external to the system, such as a connected mirror and / or a telephone.

[0207] As an example, [Fig.9] illustrates a system 1 which comprises a sensor 20 external to the handpiece, in the form of at least one camera 24 integrated into a connected device 25 such as a telephone or connected mirror.

[0208] The handpiece 2 is used in the field of vision of the camera 24 and the apparatus 25 can process the images obtained by the camera 24 to recognize the handpiece 2 thereon and determine from them its movement and orientation.

[0209] The handpiece 2 may be provided to facilitate its recognition by the camera 24 with geometric or luminous markers 26, for example several luminous points 26 modulated at a predefined frequency.

[0210] The device 25 can send to the handpiece 2, for example via a wireless connection 27 of the Bluetooth® type, and / or Wifi, one or more operating instructions, for example an instruction to stop the pump 11 and / or the transducer 13 when the device 25 detects that the handpiece 2 is far from the materials being treated or used in the wrong orientation.

[0211] The device 25 can also emit an audible and / or visual message containing one or more usage tips depending, for example, on the trajectory and / or speed of the treatment head 5 on the materials to be treated.

[0212] In the case where an external device 25 is used, the electronics present within the handpiece 2 can be arranged to allow the establishment of a wireless connection 27 with the device 25 and to carry out all or part of the processing of the information making it possible, from the images, to control the operation of the handpiece 2 and / or to generate the messages intended for the user.

[0213] Of course, the invention is not limited to the examples which have just been described.

[0214] In the case of a hair treatment, the system according to the invention may comprise at least one guiding and / or combing member arranged to guide the hair in their movement near and / or in contact with the emission surface of the transducer.

[0215] The handpiece may have only one pump which ensures the circulation of the fluid in the treatment area, and its return to a reservoir intended to recover the used fluid.

Claims

Claims

1. System for treating human keratin materials, in particular skin and / or hair, comprising a handpiece (2) comprising: - a treatment head (5) to be placed in contact with the keratin materials to be treated, defining at least one treatment zone, - at least one circuit (6) for circulating a fluid, in particular a cosmetic composition (C), used during the treatment, - at least one ultrasonic transducer (13) for emitting acoustic waves at least in the fluid present in the treatment zone, the system further comprising: - at least one detector (20) for movement and / or orientation of the handpiece (2) relative to the keratin materials to be treated and / or relative to a predefined reference axis, in particular the vertical, - at least one control unit (19) with which the detector(s) (20) communicate,the control unit being arranged to act on the operation of the handpiece according to at least one piece of information coming from the detector(s).

2. System according to claim 1, the transducer (13) being controlled by the control unit (19).

3. System according to one of claims 1 and 2, the handpiece (2) comprising at least one reservoir (7) for containing the fluid used during the treatment.

4. System according to the preceding claim, the handpiece (2) comprising at least one electric pump (11) for circulating the fluid between the reservoir(s) (7) and the keratin materials to be treated, the pump (11) being controlled by the control unit (19), the control unit (19) preferably being arranged to act on the pump (11) in order to reduce or increase the flow rate of the fluid in the fluid circulation circuit (6) as a function of the data coming from the detector (20).

5. System according to any one of the preceding claims, the detector (20) being internal to the handpiece (2).

6. System according to any one of the preceding claims, the detector (20) being chosen from inclinometers, in particular with a ball or drop of conductive liquid, or accelerometers, in particular MEMS.

7. A system according to any preceding claim, the detector (20) comprising a gyroscope.

8. A system according to any preceding claim, the detector (20) being sensitive to the magnetic field.

9. System according to any one of the preceding claims except claim 5, when they do not depend on claim 5, the detector (20) being external to the handpiece (2), said system preferably comprising a camera arranged to observe the handpiece (2), and processing means for determining, at least from the signal delivered by the camera, the movement, position and / or orientation of the handpiece (2) relative to the keratin materials to be treated and / or relative to said reference axis, said detector (20) being in particular connected by a wireless link to the control unit (19).

10. System according to any one of the preceding claims, comprising a support (3) arranged to receive the handpiece (2) when the system (1) is not used for the treatment of keratin materials, this support (3) being in particular arranged to electrically power the handpiece (2) when the latter is received in the support (3), the detector (20) being preferably arranged to detect the presence of the handpiece (2) on the support (3).

11. System according to any one of the preceding claims, comprising an audio output (15) arranged to deliver information audible to the user, connected to the control unit (19), the information delivered by the audio output (15) preferably being instructions for the movement, positioning and / or orientation of the handpiece (2) in response to data from the detector (20).

12. System according to any one of the preceding claims, comprising a light indicator (173) and / or a display screen (171) arranged to deliver information visible to the user, for example a flashing light or text, the light indicator (173) and / or the display screen (171) being connected to the control unit (19), the information delivered preferably being instructions for the movement, positioning and / or orientation of the handpiece (2) in response to data coming from the detector (20).

13. System according to any one of the preceding claims, comprising a haptic device arranged to interact mechanically with the user, in particular by vibration, in order to deliver information to him, the haptic device being connected to the control unit (19), the information delivered by the device preferably being instructions for the movement, positioning and / or orientation of the handpiece (2) in response to data coming from the detector (20).

14. System according to any one of the preceding claims, the handpiece (2) comprising a solenoid valve connected to the control unit (19), the latter being arranged to control the solenoid valve according to data from the detector (20) in order to reduce or increase the flow rate of the fluid in the fluid circulation circuit (6).

15. A system according to any preceding claim except claim 9, when not dependent on claim 9, the handpiece comprising a handle and the detector being an accelerometer, the accelerometer being positioned in the handle of the handpiece.

16. A system according to any preceding claim except claim 9, when not dependent on claim 9, the detector being a ball inclinometer, the ball inclinometer being positioned in the handpiece such that it is closest to the axis of rotation of the user's wrist.

17. Method for cosmetic treatment of keratin materials by means of a system (1) as defined in any one of the preceding claims, this method comprising the exposure of at least one area of ​​the keratin materials to ultrasound emitted by the transducer (13).

18. Treatment method according to the preceding claim, comprising driving the handpiece (2) in said area in a vertical up-and-down movement.

19. Treatment method according to the preceding claim, the longitudinal axis (0) of the handpiece (2) being inclined during the vertical movement thereof, relative to the vertical (V), by an angle a less than or equal to 45° towards the front or rear of the handpiece, and / or by an angle [3 less than or equal to 45° on the side of the handpiece.

20. Method for controlling the operation of a system as defined in any one of claims 2 to 16, comprising: (a) detecting the movement of the handpiece and / or the orientation of the handpiece by the detector (20), (b) transmitting the detection information obtained in step (a) to the control unit (19), (c) sending at least one instruction depending on the information detection, from the control unit (19) to the pump (11) and / or to the transducer (13) and / or to the solenoid valve and / or to the user interface (15; 17; 171; 173).

21. Method for controlling the operation according to the preceding claim, the instruction sent to the pump (11) being its stopping, its starting or a modification of its flow rate, the instruction sent to the transducer (13) being its stopping, its starting or a modification of its power of emission of the acoustic waves, the instruction sent to the solenoid valve being its degree of opening, and the instruction sent to the user interface (15; 17; 171; 173) being the sound emission of a beep or a sentence stating a brief operating mode of the system, and / or a light flashing, and / or colored lighting in a predefined color, and / or the display of a message indicating a brief operating mode of the system, and / or a vibration.

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