System for treating human keratinous substances

Abstract

System for treating human keratinous substances, in particular for treating the skin and / or hair, comprising a handpiece (2) comprising:-a treatment head (5) placed in contact with the keratinous substance to be treated, thereby defining at least one treatment zone,-at least one circuit (6) for the circulation of a fluid used in the treatment, -at least one ultrasonic transducer (13) for emitting sound waves at least into the fluid present in the treatment zone, the system further comprising:-at least one detector (20) for detecting the position and / or orientation of the handpiece relative to the keratinous substance to be treated and / or relative to a predefined reference axis, and-at least one control unit (19) for controlling the detection of the position and / or orientation of the handpiece relative to the keratinous substance to be treated and / or relative to the predefined reference axis, the one or more detectors are in communication with the at least one control unit (19), the control unit (19) being designed to act on the operation of the handpiece based on at least one item of information originating from the one or more detectors.

Description

Technical Field

[0001] This invention relates to systems for treating human keratin, particularly those systems that employ ultrasound to treat human keratin. Background Technology

[0002] Patent application EP 3 294 469 describes an apparatus for cleaning surfaces, comprising: a chamber containing a liquid and communicating with an outlet pipe present on the surface to be cleaned, and an ultrasonic transducer for transmitting acoustic energy to the liquid contained in the chamber and the outlet pipe.

[0003] Patent application ES 2 708 149 discloses a device for cleaning surfaces, which includes an ultrasonic soldering electrode that is very close to a cleaning solution present on the surface to generate ultrasound, and the cavitation effect enables the removal of dirt from the surface.

[0004] US Patent 8486199 describes an apparatus for processing the surface of a semiconductor wafer, the apparatus including a resonator that enables the supply of ultrasonic energy to a processing fluid containing bubbles.

[0005] Document EP 1 645 342 describes a method for cleaning equipment, which involves subjecting a foaming liquid to an acoustic field.

[0006] Patent KR101152920 describes a device for cleansing the skin that includes a vacuum pump and is designed for use with a microbubble-containing liquid very close to the skin.

[0007] Patent applications US 2017 / 0080257, KR 2020 / 0102956, US 2009 / 318853, JP 2016 / 214424 and WO 2020 / 029429 disclose cosmetic procedures for treating skin, particularly cleansing skin, using an ultrasonic device that generates microbubbles in a cosmetic composition applied to the skin to be cleansed.

[0008] Similar devices are disclosed in patent applications US 2011 / 21328, US 2010 / 010420, EP 3 634 643, CN206995178, and EP 2470 310.

[0009] Patent FR 3 116 451 describes a device for cleaning human keratin material, comprising a fluid circulation loop, a transducer, and a treatment head that encloses the treatment fluid, in which ultrasonic waves emitted by the transducer propagate. This device may include means for detecting contact between the treatment head and the keratin material to be treated, so as to interrupt operation of the transducer, for example, in the absence of contact. There is a possibility of observed fluid loss, particularly a risk of perfusion loss in the circulation loop, rendering the device less effective.

[0010] There is a need to overcome this drawback and limit the risk of infusion loss in the fluid circulation loop.

[0011] More generally, it is beneficial to limit the risk of liquid leakage from the processing head to the outside of the equipment or, for example, to an area of ​​the equipment that should be kept dry in order to ensure its reliable operation, for example, because of the presence of electrical circuits.

[0012] There is also a need to improve the user experience and comfort when dealing with keratin, as well as the effectiveness of this treatment (especially by allowing the system to quickly return to normal operation after a shutdown). Summary of the Invention

[0013] The present invention aims to satisfy these needs in whole or in part, and according to its first aspect relates to a system for treating human keratinous substances (especially skin and / or hair), the system comprising a handheld component including: - A treatment head, which is placed in contact with the keratinous material to be treated, thereby defining at least one treatment area. - At least one loop for the circulation of fluids, particularly for the circulation of cosmetic compositions used in the process. - At least one ultrasonic transducer for emitting sound waves into at least the fluid present in the treatment zone. The system further includes: - At least one detector for detecting the movement and / or orientation of the handheld device relative to the keratinous substance to be treated and / or relative to a predefined reference axis, particularly the vertical axis. - At least one control unit that communicates with the one or more detectors, the control unit being designed to act on the operation of the handheld device based on at least one piece of information derived from the one or more detectors.

[0014] "It communicates with one or more detectors" means that the communication can be of any kind, such as one-way communication from the detector to the control unit, or two-way communication between the two. The information communicated can be analog or digital, or even simple binary.

[0015] Using the system according to the invention to treat keratinized substances can, in particular, cleanse the skin or hair, perform exfoliation, diffuse active ingredients into the keratinized substance, and / or treat certain skin conditions.

[0016] This invention makes it easier to ensure optimal use conditions for handheld devices, especially in terms of processing efficiency, autonomy, reliability, and / or user comfort.

[0017] In particular, knowing the orientation of the handpiece means that one or more actions can be performed as early as possible to reduce the risk of the fluid circulation loop losing its perfusion, for example, by using the detection of tilt above a given threshold to anticipate that the treatment head will separate from the keratin being treated, or by the handpiece adopting an orientation that changes the flow of fluid in the circulation loop.

[0018] In particular, the presence of one or more detectors sensitive to the tilt of the handheld component during use makes it possible, in exemplary embodiments of the invention, to stop fluid circulation if the handheld component is tilted in a manner that increases the risk of fluid loss, particularly if fluid leaks into an area to be protected from fluid. This makes it possible, for example, to provide more effective protection for internal components of the system, particularly electrical components, from the risks associated with the presence of fluid, while still further reducing the risk of malfunction.

[0019] The system according to the invention can also maximize the autonomy and performance of the process by limiting fluid loss in the processing zone.

[0020] The system according to the invention also makes it possible to protect the user from uncontrolled jets of fluid or from prolonged contact between the same area of ​​the keratin material and the treatment head by detecting the movement of the handpiece relative to the keratin material and controlling the operation of the system accordingly, especially in cases of increased transducer temperature.

[0021] Preferably, the handheld component includes a handle that can be arranged such that it is not coaxial with the processing head. The handle can at least partially accommodate the fluid circulation loop.

[0022] Motion and / or orientation detectors The system may include several motion and / or orientation detectors, especially two or three.

[0023] The detector can be inside the handheld device. Alternatively, the detector can be located outside the handheld device.

[0024] When the detector is external to the handheld device, the system may include a camera designed to observe the handheld device, and processing means for determining the movement, position, and / or orientation of the handheld device relative to the keratinous substance to be treated and / or relative to the reference axis, at least based on signals delivered by the camera, wherein the detector is connected to the control unit, particularly via a wireless connection. For example, this camera could be a smart mirror or a telephone.

[0025] The detector can be selected from a tiltmeter (especially a tiltmeter involving conductive droplets or spheres) or an accelerometer (especially a MEMS). A mercury sensor may also be used as the detector, as the technical characteristics of mercury sensors are suitable for this invention. However, due to its environmental impact, it is preferable not to use a mercury sensor.

[0026] The detector can, in particular, measure the tilt angle of the handheld device relative to the Earth's gravitational field. An accelerometer makes it possible to detect the movement of the handheld device.

[0027] Preferably, the spherical inclinometer is positioned in the handheld device in such a way 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 handheld device.

[0029] The detector may include a gyroscope, especially a gyroscope coupled to an accelerometer, making it possible to determine both motion and orientation.

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

[0031] Motion detectors can include time-of-flight laser sensors, or detection devices involving reflected beams and the resulting patterns of observation, such as those in optical mice. As a variant, the detector can be an ultrasonic detector.

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

[0033] The detector can deliver continuous or pulsed analog or digital signals that vary depending on the orientation and / or movement of the handheld device.

[0034] For example, a detector can emit a pulse for each basic displacement and determine the motion by counting the emitted pulses.

[0035] The detector can be a unidirectional detector, that is, a unidirectional detector that measures the tilt of a single axis. As a variant, the detector is a bidirectional detector, that is, a detector that simultaneously measures the tilt of two axes of the handheld device.

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

[0037] It can have a resolution better than 10°, especially better than 5°, better than 1°, and even better than 0.1°.

[0038] Control Unit The control unit can be located inside or outside the handheld device. As a variation, part of the control unit is located inside the handheld device, while another part of the control unit is located outside the handheld device.

[0039] The control unit can analyze data from one or more motion and / or orientation detectors, and in particular, derive commands from them to be sent to any other elements of the transducer and / or handheld device.

[0040] The transducer can be operated by a control unit. The control unit is specifically designed to turn the transducer on or off or modify its power based on data from one or more detectors.

[0041] The control unit preferably includes a microcontroller. The control unit may include one or more other electronic boards, all of which may be grouped together in the handheld device or not, and when all of these electronic boards are not grouped together in the handheld device, they are capable of communicating with each other via any type of connection (e.g., RF, optical, or wired connection).

[0042] External detectors can be connected to the control unit, especially via wireless connections (particularly Wi-Fi or Bluetooth®).

[0043] The control unit can perform operations that manage the handheld device and, in particular, apply one or more operating instructions that depend on the movement and / or orientation of the handheld device. Examples of such instructions will be given later.

[0044] Where applicable, the control unit may enable logging of usage dates, usage durations, and / or user identities. If usage is considered too frequent relative to predefined thresholds, the control unit may disable the system and / or alert the user, particularly via telephone notification. If usage is considered too infrequent relative to desired results, the control unit may alert the user, particularly via telephone notification.

[0045] Reservoir The system (especially the handheld version) includes at least one reservoir for holding the fluids used in the process.

[0046] "Reservoir" should be understood as any element capable of containing fluid; therefore, a reservoir can be formed from any type of cavity, bag, or cartridge, i.e., in the latter case, a reservoir can be formed from a removable element.

[0047] The system may include several separate reservoirs, such as one for distributing fluid to the treatment area and another for containing used fluid that is at least partially recovered after treatment. Alternatively, fluid from the reservoir may not be recycled by the system, or may be returned to the same reservoir from which it originated, for example, to the end of that reservoir opposite the end from which it was taken.

[0048] Memory can be separated from each other by one or more filters. Individual sub-sections of one or more memory can be separated by one or more filters.

[0049] One or more reservoirs may or may not be removable from the system, particularly from the handpiece. One or more reservoirs may be, for example, disposable reservoirs, and may be replaced when no fluid is present, or when the recovered fluid needs to be removed.

[0050] It is even possible to provide a storage device whose capacity varies depending on the treatment to be performed on the keratinous material. The system could be configured to allow users to adapt their selection of a storage device from several storage devices with different capacities.

[0051] The handheld device preferably includes at least one electric pump for circulating fluid between one or more reservoirs and the keratinous material to be treated. The pump is preferably operated by a control unit.

[0052] The control unit can be designed to act on the pump to reduce or increase the flow rate of the fluid in the fluid circulation loop based on data from the detector. For example, when the system detects that it is no longer in contact with the keratinous substance to be treated, the operation of the pump can be modified to save energy and / or reduce the risk of leakage.

[0053] When the system includes a pump for circulating fluid toward the treatment area, the system advantageously includes a selector to facilitate cleaning and / or decontamination of the reservoirs. This selector allows the circulation of fluid to be switched between a first configuration and a second configuration. In the first configuration, circulation occurs between one or more reservoirs and the treatment area. The second configuration is used for cleaning and / or filling one or more reservoirs.

[0054] One or more storage units may include one or more compartments, particularly several compartments integrated into the same body and separated by walls, or several interconnected compartments, for example, connected by waterways. One or more storage units may include a compartment for containing fluid dispensed to the area to be treated, and a compartment for collecting used fluid, for example, so that it can be recycled. These two compartments may be connected, for example, via a filter.

[0055] One or more reservoirs may even include several compartments in which different compositions can be stored. These compositions can be mixed upon use, and some of them may be in solid and / or in a rapidly soluble powder form.

[0056] For example, a reservoir may include: a first compartment for containing a solid composition, such as in the form of a powder or crystals; and a second compartment for containing a fluid composition, such that the two compartments may be in communication with each other during use so that the fluid composition dissolves the solid composition.

[0057] The first compartment may even include a mixture of a suspended solid composition and a liquid in which the solid composition is insoluble, and the fluid composition in the second compartment dissolves the mixture when the system is in use.

[0058] One or more reservoirs may include one or more filters that remove impurities from the collected fluid before it is redistributed to the treatment zone. Reservoirs may even include vents.

[0059] One or more reservoirs may contain gases and / or liquids, especially under pressure, making it possible, for example, to unblock fluid circulation loops during the cleaning phase of the system, or to increase the flow rate of fluid in the fluid circulation loops.

[0060] One or more reservoirs may include thermal devices for heating or cooling fluids, particularly resistive electrical components. This thermal device may be controlled by a control unit based on the movement or orientation of a handheld component. Heating all or part of the fluid can make it possible to reduce its viscosity, and this in particular allows for better fluid circulation and makes it possible to avoid premature scaling in the fluid circulation loop.

[0061] One or more reservoirs are preferably compatible with one or more liquids of different properties (especially different types of compositions) and cleaning liquids, which may or may not be miscible.

[0062] One or more reservoirs are preferably at least partially transparent, thereby enabling users to visually assess their fill level and / or the cleanliness of the fluid they contain.

[0063] One or more reservoirs may be deformable or made of rigid materials, particularly glass or plastic. Reservoirs may include removable components and therefore have an adjustable volume as needed. One or more reservoirs may be fitted with check valves, allowing them to detach from the receiving housing without loss of fluid.

[0064] One or more storage containers may take the form of boxes, typically cylindrical or of some other shape, or flexible bags.

[0065] At least one of the storage containers has a capacity, for example, between 1 ml and 200 ml, and more preferably between 1 ml and 50 ml.

[0066] One or more reservoirs may include one or more fluid backflow prevention devices, such as at least one check valve that automatically opens when the reservoir is placed into a corresponding housing on the handpiece or its support and automatically closes when the reservoir has been removed from the handpiece or support to prevent fluid loss.

[0067] Fluid circulation loop Fluids can circulate continuously or intermittently, with or without recirculation.

[0068] Fluid circulation loops typically consist of multiple conduits connected in a manner appropriate for generating the desired fluid circulation, such as in series or parallel connections by means of suitable connectors.

[0069] A fluid circulation loop connects the various components of a system that involve the circulation of fluid, such as a treatment head, one or more pumps and one or more fluid reservoirs, and one or more filters or other purification or sterilization systems.

[0070] The fluid circulation loop may include one or more auxiliary outlets and / or one or more valves, enabling the regulation of fluid circulation and, in particular, making it possible to remove any excess fluid from the fluid circulation loop.

[0071] The fluid circulation loop may include an inlet that allows it to be filled with water and / or cleaned from an external network.

[0072] The handheld device may include a solenoid valve connected to the control unit. The control unit is preferably designed to operate the solenoid valve based on data derived from the detector in order to reduce or increase the flow rate of the fluid in the fluid circulation loop.

[0073] The control unit can be designed, in particular, to reduce the risk of perfusion loss in the fluid circulation loop when the treatment head becomes separated from the keratinous material to be treated, by interrupting the operation of the pump early and / or by actuating one or more solenoid valves to prevent air from entering the conduit communicating with the treatment chamber located at the treatment head.

[0074] One or more reservoirs and the fluid circulation loop that enables fluid circulation can belong to the same component forming the refill, which can be operated as a whole for placement on and removal from the system; this makes refilling the product much easier. Where appropriate, such a refill may have a mechanical interface with a pump or other drive mechanism, making it possible to establish circulation of the product from the refill toward the processing area when actuated.

[0075] The components that form the replacement unit can be designed to be fastened to the system, for example by clips or in some other way, such as in the same housing (e.g., the housing that houses another component of the system, such as a generator).

[0076] Processing head The processing head is preferably designed to distribute fluid to the area to be processed via at least one fluid outlet, and / or to at least partially recover used fluid from the area to be processed using, for example, a fluid reflux inlet.

[0077] The processing head can be supplied with fluid originating from one or more reservoirs via one or more conduits.

[0078] The processing head may include the aforementioned detectors, or when the system includes several of them, it may include the same detector.

[0079] For example, the treatment head may include a detector that is sensitive to the movement of the treatment head and / or the orientation of the treatment head relative to the keratin material.

[0080] If one or more motion and / or orientation detectors cannot deliver such information, the processing head may also include detectors sensitive to contact between the processing head and the substance to be processed or very close to the substance.

[0081] Fluid outlets and / or inlets are connected, for example, to the aforementioned fluid circulation loop. In particular, the fluid circulation loop may be arranged relative to the processing head in such a way that fluid is partially distributed and / or collected in front of and / or behind the emitting surface of the ultrasonic welding electrode of the transducer, for example, through at least one orifice on the emitting surface.

[0082] Preferably, the transducer extends at least partially into the processing head. It is worth noting that the transducer can be fully housed therein.

[0083] The processing head may include: a heating element (such as a resistive electrical element) for example, to heat the composition; and / or a light source arranged to illuminate the processing area and / or activate certain components of the fluid in which cavitation occurs during use.

[0084] The treatment head can be designed to deliver microcurrents to keratinous materials via fluid, especially when treating such materials.

[0085] The processing head may include at least one filter, for example, for filtering the composition to be recycled, which is arranged, for example, in the return path of the fluid.

[0086] The processing head may include porous materials and / or materials capable of releasing or diffusing fluids, especially open-cell foam, and is preferably supported by a removable support, particularly in the form of a frame.

[0087] The processing head may include a dispensing orifice such as a groove, which closes when at rest and opens under pressure from the upstream composition and has elasticity that allows for volume increase during filling and dispensing of fluid, which continues after the filling action has ended.

[0088] The treatment head may include a chamber for storing a sufficient amount of fluid to allow for the treatment of keratinous material and contact between air bubbles and the surface to be cleaned.

[0089] The processing head may include several independent or interconnected compartments.

[0090] The treatment head may include components made of flexible and / or deformable materials, especially components made of elastic deformable materials, particularly those in contact with the keratinous substance to be treated.

[0091] Depending on the intended use of the system, the processing head can have a variety of shapes.

[0092] The processing head may include one or more removable components that can be easily removed from the system by the user, preferably without any tools. This makes cleaning between uses much easier.

[0093] The processing head can be oriented in various ways; in particular, it can be rotated about an axis or mounted on a ball joint. At least a portion of the processing head (especially the emitting surface) can pivot 360°.

[0094] One or more removable components of the processing head can be attached to the rest of the system via any suitable securing device, particularly a geoglyph, spring, or piston. The processing head is preferably movable; in some examples, it can tilt or rotate more than 180°, 270°, or 360° about at least one axis.

[0095] The transducer is preferably arranged relative to the processing head in such a way that the acoustic wave emitting surface of the ultrasonic welding electrode is far away from the surface of the keratinous material to be processed.

[0096] Where applicable, the transducer is movable relative to the fixed parts of the system, for example, driven by rotation or forward and backward movement.

[0097] The treatment head may include an end piece, preferably a removable end piece, that comes into contact with the keratinous material to be treated.

[0098] When the end piece is removable, it is selected, for example, based on the intended use, by choosing the type, size, robustness, and / or shape that best suits the area to be cleaned.

[0099] user interface The system (especially the handheld device) may include a user interface, which may include audio output and / or luminous indicators and / or displays and / or haptic devices.

[0100] Therefore, the system (especially the handheld device) may include an audio output designed to deliver audible information to the user. The audio output is preferably connected to a control unit, and the information delivered by the audio output is preferably an instruction for moving, positioning, and / or orienting the handheld device in response to data derived from one or more detectors.

[0101] As described above, the system (especially the handheld device) may also include an luminous indicator and / or display screen, which is designed to deliver visual information to the user, such as a flash or text. The luminous indicator and / or display screen is preferably connected to a control unit, and the information delivered is preferably an instruction for moving, positioning, and / or orienting the handheld device in response to data derived from the detector.

[0102] When a system (especially a handheld device) includes a haptic device, the latter can be designed to interact mechanically with the user, particularly through vibration, in order to deliver information to them. The haptic device is preferably connected to a control unit, and the delivered information is preferably an instruction to move, position, and / or orient the handheld device in response to data derived from a detector.

[0103] With the help of audio output, luminous indicators, displays and / or tactile devices, the system can guide the user in using and / or manipulating the system, especially by alerting the user when deviating from optimal operating conditions, so that the user keeps the processing head in a predefined orientation corresponding to optimal operation.

[0104] The system can provide voice guidance to users during use; in particular, it can guide users in the operation, use, cleaning, disassembly, storage and / or maintenance of the system.

[0105] Handheld device "Handheld device" means a device that is sized to allow a user to operate it with only one hand. As mentioned above, a handheld device may include a surface adapted to be held in the user's hand and form a handle.

[0106] As indicated above, one or more detectors can form a component of the handheld device.

[0107] The same applies to the control unit.

[0108] The handheld component may include, particularly at the processing head, guides and / or comb-like members, end members, grids, one or more spacers and / or flexible lips.

[0109] The handheld device can be manipulated in all orientations; for example, it can be manipulated head-up or head-down.

[0110] At least one UV radiation source may be located inside the handheld device so as to expose at least the inner surface of the reservoir or part of the fluid circulation loop and / or the surface of the processing head in contact with the fluid to UV radiation.

[0111] One or more storage units may be arranged in the handpiece, particularly in its handle, or at least partially outside the handpiece. This makes them easier to remove, especially for positioning on a handpiece support bracket that supports the handpiece when it is not in use.

[0112] The handheld device is preferably powered by a rechargeable battery, but it can also be connected to a power cord. The battery can be recharged directly via the power cord, or it can be recharged via a support on which the handheld device is placed.

[0113] The system (especially handheld devices) can carry engraved information on its surface intended for the user and to provide assistance with the use and operation of the system. The engraving can be arrows, pictographs, symbols, and aids for the visually impaired (such as Braille).

[0114] Support components The system may include a support designed to accommodate a handheld device when the device is not being used for keratin treatment. This support may be in the form of a bracket on which the handheld device can rest when not being used for keratin treatment.

[0115] The support is specifically designed to electrically power the handheld device when it is housed within the support, and the detector is preferably designed to detect the presence of the handheld device on the support. The support allows the battery in the handheld device to be recharged to power the electronic circuitry that ensures its operation, and / or allows the handheld device to be retracted while protecting the processing head from becoming dirty.

[0116] Supports can be designed as boxes for storing internal and / or external components and / or accessories of handheld items, especially brushes, spare heads, new storage containers and / or auxiliary products.

[0117] Support components may include transformers or converters connected to an electrical network.

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

[0119] When the storage device is removed from the handheld device, it is advantageous that the support includes a housing in which the storage device is placed, especially with its opening oriented downwards, and that the support also allows the handheld device to be placed on it, both when the storage device is in place on the handheld device and when the storage device has been removed from the handheld device and installed in the corresponding housing belonging to the support.

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

[0121] The system can be designed to bring about automatic calibration of one or more detectors when the handheld device is placed on the support.

[0122] system Preferably, this system is a non-therapeutic system, specifically designed for cosmetic procedures.

[0123] If needed, the system according to the invention can allow for the effective handling of both exogenous and endogenous impurities or defects, while simultaneously meeting certain currently applicable environmental requirements and safety standards.

[0124] At least a portion of the system can be heated and / or diffused light and / or cooled, thereby making it possible, for example, to activate certain compounds present in the fluid, particularly certain compounds present in the cosmetic composition.

[0125] The system (especially the handheld component and / or support component) can vibrate at least partially, thereby making it particularly possible to remove certain impurities that clog the reservoir and / or fluid circulation loop, such as impurities that clog the pump.

[0126] The system can be associated with additional gripping devices, such as gripping devices for additional hands, which are arranged in a way that allows certain individuals with disabilities to use it.

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

[0128] Methods for treating human keratinous substances According to another aspect of the invention, another subject of the invention is a method for cosmetic treatment of keratinous material by means of a system as defined above, involving exposing at least one area of ​​the keratinous material to ultrasound emitted by a transducer.

[0129] The method preferably involves vertically moving a handpiece from top to bottom within the area to be treated, this movement preferably being performed while maintaining the handpiece in a predefined, for example, elevated orientation. The fact that the handpiece is elevated during treatment reduces the risk of the fluid circuit experiencing perfusion loss and / or fluid loss.

[0130] The longitudinal axis of the handheld component is preferably tilted at an angle of less than or equal to 60°, preferably less than or equal to 45°, relative to the front or back of the handheld component during its vertical movement, and / or tilted at an angle of less than or equal to 60°, preferably less than or equal to 45°, toward the side of the handheld component.

[0131] "Front of the handpiece" means the side facing the keratinous material to be treated, while "back of the handpiece" means the opposite side.

[0132] Methods for controlling operation According to yet another aspect of the invention, another subject of the invention is a method for controlling the operation of the system defined above, relating to: (a) The movement and / or orientation of the handheld device are detected by the detector. (b) Transmit the detection information obtained in step (a) to the control unit. (c) Send at least one instruction from the control unit to the pump and / or transducer and / or solenoid valve and / or user interface based on the detection information.

[0133] The commands sent to the pump can be to stop, start, or modify its flow rate.

[0134] The commands sent to the transducer can be to stop, start, or modify the power of the sound waves it emits.

[0135] The command sent to the solenoid valve can be the degree to which it is opened.

[0136] The commands sent to the audio output can be audible beeps or phrases that announce the system's concise usage pattern.

[0137] The instructions sent to the illumination indicator can be to set up a flash and / or colored lighting of a predefined color.

[0138] The instructions sent to the display screen can be messages indicating a concise usage pattern of the system. These messages can appear continuously or intermittently, especially through flashing.

[0139] The instructions sent to the tactile device are continuous or discontinuous vibrations.

[0140] This method may involve detecting the movement and / or orientation of the handheld device, so as to, for example: When the system detects that the user is moving the device in a motion that could degrade processing performance—for example, moving too slowly, too fast, or too irregularly—it sends a message to the user to instruct them to move the device in a predefined motion. - If it is detected that the processing head in contact with the processing area has not moved for an extended period of time, which may cause discomfort to the user (e.g., due to transducer temperature), then the operation of the transducer shall be paused. - If a movement that may correspond to the handheld device being lowered is detected, pause the operation of the handheld device. - If a stationary position is detected corresponding to the handheld device placed on the support, the handheld device is brought into a predefined state, such as standby, and / or - Trigger one or more predefined actions based on the orientation of the handheld device. For example, if an orientation deviating from a predefined vertical value is detected, trigger one or more predefined actions acting on the pump flow rate and / or one or more solenoid valves. Attached Figure Description

[0141] The invention can be more clearly understood by reading the following detailed description of non-limiting implementations of the invention and by referring to the accompanying drawings, in which: [ Figure 1 An example of a system according to the invention is illustrated schematically and in part. [ Figure 2 [Illustrative and partially illustrated] Figure 1 The handheld device of the system, [ Figure 3 [Illustrative and partially illustrated] Figure 1 The system in which the storage is removed from the handheld device. [ Figure 4 The diagram is schematically and partially illustrated in the form of a block diagram. Figure 1 The system [ Figure 5 [Illustrative and partially illustrated] Figure 1 The tilt of the handheld component of the system, [ Figure 6 [Illustrative and partially illustrated] Figure 1 The preferred location of the ball sensor in the system, [ Figure 7 [Illustrative and partially illustrated] Figure 1 The preferred location of the accelerometer in the system, [ Figure 8[Illustrative and partially illustrated] Figure 1 The preferred location of the accelerometer with a gyroscope in the system. [ Figure 9 [Illustration of an example system including a handheld device and an external sensor, which includes a camera and forms part of, for example, a smart mirror or a phone.] Detailed Implementation

[0142] Figures 1 to 8 The illustration shows a system 1 for skin treatment according to the present invention, the system 1 including a handpiece 2 and a support 3, the handpiece being placed on the support 3 when not being used to treat keratinous substances.

[0143] Handheld device The handheld component 2 includes a handle 4, a processing head 5, a circuit 6 for circulating the composition C, and at least one reservoir 7 for containing the composition C.

[0144] The reservoir 7 makes it possible to compensate for any loss of the composition during system operation if a portion of the composition is not recycled.

[0145] like Figure 3 As illustrated, the storage device 7 is preferably detachable from the handpiece. Alternatively, the storage device 7 may not be detachable from the handpiece.

[0146] Circuit 6 includes Figure 4 The diagram schematically depicts a pressure pump 11. Pump 11 can have any type of drive, particularly manual or electric, and preferably electric. It can be of various types. Pump 11 is, for example, a positive displacement pump or a centrifugal pump, particularly a peristaltic pump, a diaphragm pump, or a piston pump, or a combination of several types of pumps. Pump 11 can be powered by direct current or alternating current. Preferably, the power supply voltage of pump 11 is less than 50 V, for example, a voltage in the range of 5 V to 12 V. Pump 11 is preferably compatible with liquids of different properties, particularly with aqueous, oily, mixed liquids containing suspended particles or fillers, or even polymers. The mechanism of pump 11 can be driven by a motor, either directly or via a reduction gear. When the drive is manual, system 1 may include a handle that a user actuates to operate pump 11. Preferably, pump 11 is configured to provide a fluid flow rate between 0.01 ml and 15 ml per second. Pump 11 can be removable or non-removable. Pump 11 can generate negative and / or positive pressure on the fluid to induce fluid circulation and bring it into contact with the skin. The pump can also be used for internal cleaning of the entire or part of a system. Pump 11 can house a single-piece or multi-piece filter. Pump 11 can be mechanically or electrically isolated from system 1, for example, so that it can be removed from system 1 for cleaning.

[0147] The treatment head 5 includes a surface 10 that contacts the composition C, and is designed to deliver the composition C to the area of ​​keratinous material to be treated. The composition exits the treatment head 5 via a first opening 101 of the conduit 6a. The handheld part 2 can move along the area to be treated, and the composition C delivered by the opening 101 may not be recycled. As a variant, recycling of the composition C is performed by re-injecting it into the circuit 6 via a second opening 102 of the conduit 6b present on the treatment head 5, and the composition exiting via the opening 101 is recycled in the circuit 6 and optionally in a reservoir 7.

[0148] like Figure 4 As illustrated, conduit 6b can communicate with a suction pump 30 (e.g., an electric pump) that can forcefully deliver the composition C into a processing and purification unit 40, which allows the composition C to be recycled, thus returning it to the keratinized material to be treated, and then circulating the composition C at least partially in a closed loop. The processing and purification unit is, for example, a filtration system comprising one or more filters designed to block suspended particles in the composition, such as skin debris removed during the cleansing process. The 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.

[0149] Where applicable, the handpiece may include a sealing element 103 (such as a sealing element 103) around the openings 101 and 102 of the processing head 5. Figure 4 (Illustrated schematically), such as a flexible lip, to accommodate composition C when the treatment head is applied to the skin and to facilitate its return via catheter 6b. The lip may consist of sub-elements, between which the composition can be recovered.

[0150] The processing head 5 includes at least one transducer 13 that emits sound waves and an ultrasonic welding electrode, the surface 10 in contact with the composition being defined, for example, by the free end of the ultrasonic welding electrode. Due to the power and frequency of the sound waves, bubbles can be generated in the composition C as a result of the sound waves.

[0151] The transducer 13 can be powered by direct current or alternating current from a power source. The acoustic power delivered by the transducer 13 can vary depending on the power supply voltage of the transducer and / or the current supplying the transducer, especially depending on whether it is direct current or alternating current.

[0152] The emitting surface 10 for emitting sound waves toward a liquid environment may include relief or etched patterns from which bubbles may originate at different levels along the longitudinal axis of the transducer 13. Specifically, these reliefs may provide nucleation sites at their tips and substrate. Reliefs can allow for more uniform bubble generation. These reliefs can also promote bubble collapse because the horizontal differences along the longitudinal axis make it possible to generate relatively large cavitation areas that are not confined to a single plane. In addition to the reliefs on the emitting surface 10 that contribute to improved bubble generation, the emitting surface may have reliefs that aim to achieve another objective, such as retaining fluid or cleaning the area to be treated. These are, for example, reliefs made of flexible materials such as bristles, especially flocked bristles.

[0153] The handheld component 2 further includes electronic circuitry 14.

[0154] The electronic circuitry 14 includes, in particular, a control unit 19 and one or more sensors 20 that sense the movement and / or orientation of the handpiece 2 relative to a reference axis (particularly the vertical axis), and these sensors 20 transmit their measurements to the control unit 19. These sensors may provide information about the position of the handpiece relative to the keratinous material, or, as a variation, may be supplemented by one or more position sensors.

[0155] The control unit 19 controls the operation of the pump 11, the suction pump 30, the battery 18 that powers (and especially charges) the system, and the transducer 13.

[0156] like Figure 5 A and Figure 5 As illustrated in Figure B, one or more sensors 20 can measure the tilt α in the side view and the tilt β in the front view of the handheld device 2 relative to the vertical V.

[0157] One or more sensors 20 can also detect when the handpiece 2 is received on the support 3, for example by detecting the orientation given to the handpiece by the support and the absence of movement of the handpiece.

[0158] One or more sensors 20 can also detect when the surface 10 comes into contact with the keratinous substance.

[0159] The control unit 19 is connected to the generator 16 via a connector, and in particular supplies power to the transducer 13. The generator 16 includes, for example, an oscillator and a power stage.

[0160] Control unit 19 may activate pump 11 and / or suction pump 30 and / or emit sound waves through transducer 13 only when surface 10 comes into contact with the keratinous material to be treated, particularly in a manner that allows the composition to be recycled. Control unit 19 may allow pump 11, pump 30 and / or transducer 13 to start gradually, particularly stepwise, as this allows the power of these various components to increase gradually.

[0161] Control unit 19 may also activate pump 11 and / or suction pump 30 and / or emit sound waves from transducer 13 only when the handheld device 2 is used correctly and comfortably, with appropriate movement and orientation α and β that will not cause leakage of the cosmetic composition into the interior and / or exterior of the handheld device 2. In cases where this is not the case, control unit 19 may stop pump 11 and / or suction pump 30 and / or transducer 13 if it estimates a risk of leakage.

[0162] Furthermore, if the control unit 19 estimates that there is a risk of user discomfort, especially due to excessively prolonged contact between the treatment head 5 and the same area of ​​the keratinous material, it can stop the pump 11 and / or the suction pump 30 and / or the transducer.

[0163] The control unit 19 may also send commands to the pump 11 and / or the suction pump 30 to reduce the fluid flow rate in the loop 6, and / or send commands to the transducer 13 to reduce the power of the ultrasonic waves.

[0164] The control unit 19 can also communicate with an optical detector (not depicted) that can detect the presence of a compound to be removed from the surface of the keratin material and may determine the amount present.

[0165] The control unit 19 also communicates with a human-machine interface 17, which includes a display screen 171, control buttons 172, and an illuminated indicator 173; it can also communicate with a terminal such as a mobile phone via a wireless connection. The indicator 173 can notify the user about the system's operating status and / or its operating mode (especially through the illumination and / or flashing of colored LEDs).

[0166] Indicator lights 173 and / or display screen 171 may issue instructions regarding system use and / or safety warnings to the user in the form of text and / or some other display and / or color and / or flashing lights. In particular, the instructions are issued based on measurements taken by one or more sensors 20.

[0167] The human-machine interface 17 also enables the system to be remotely diagnosed, reprogrammed, receive software updates, and / or automatically issue commands to deliver attachments to replace worn-out attachments, and to clean and / or process products.

[0168] The human-machine interface 17 makes it possible to adjust certain operating parameters of the system 1, such as the intensity of the emitted sound waves.

[0169] As indicated above, where applicable, control unit 19 may enable logging of usage dates, usage durations, and / or user identities. If system usage is considered too frequent relative to predefined thresholds, control unit 19 may disable system 1 and / or alert the user, particularly via a notification sent by telephone. If usage is considered too infrequent relative to desired outcomes, control unit 19 may alert the user, particularly via a notification sent by telephone.

[0170] Overuse of System 1 may irritate the stratum corneum. Infrequent use of System 1 may limit the effectiveness of stratum corneum treatment and may not achieve the desired results.

[0171] The control unit 19 can also control the audio output 15, particularly located on the handheld device. The audio output makes it possible to issue usage instructions and / or safety warnings to the user, especially based on measurements taken by one or more sensors 20.

[0172] Battery 18 may be removable; it may be used to power the entire system 1 or only a portion of the system (especially pump 11). Battery 18 may be of various types, such as lithium-ion or NiMH, preferably of a type suitable for humid conditions or that can be at least partially immersed in liquid. Battery 18 is preferably rechargeable. Battery 18 is preferably selected to be able to power system 1 without recharging for use in multiple consecutive processing stages, or even for a single cleaning of several processing stages and system 1.

[0173] The handheld component 2 may further include a solenoid valve (not shown) that enables modification of the flow rate of the cosmetic composition in circuit 6, or enables the duct of this circuit to be closed. The solenoid valve is preferably operated by the control unit 19, and the instructions sent to it are preferably based on measurements taken by one or more sensors 20.

[0174] Support components like Figure 3 As illustrated, the support member 3 includes a first housing 8 that houses the handheld member 2 and a second housing 9 that houses the storage device 7, with the opening of the storage device 7 oriented downwards. The storage device 7 can be housed in the housing 9 of the support member, while the handheld member 2, with the storage device 7 removed, is housed in the housing 8 of the support member 3.

[0175] The support member may include a fluid discharge device (not depicted), particularly enabling fluid to be discharged in the event of overflow. The housing 9 may include a fluid discharge device that allows fluid to be discharged, particularly for drying, when the reservoir 7 is received within the housing 9. The fluid discharge device may be located below and / or on the side of the support member 3, preferably at a level lower than the downward-oriented opening of the reservoir 7 within the housing 9.

[0176] The system is charged, for example, via a USB port (not shown) located specifically on the support 3. For instance, as illustrated, the support 3 includes a first connector 32, while the handheld device 2 includes a second connector 22, which is designed to connect to the first connector 32 when the handheld device 2 is received on the support 3, allowing the handheld device 2 to be charged. Connectors 22 and 32 may be, at least one of them, spring-loaded.

[0177] In a variant, the handheld component 2 can be charged via induction while it is held on the support 3.

[0178] Battery 18 can also be removed and charged separately.

[0179] The support 3 may include a portion of the electronic circuitry 14, which in particular makes the handheld component 2 lighter.

[0180] Uses for treating keratinous substances System 1 can be used to treat keratinized substances, such as skin.

[0181] Therefore, by manipulating the handheld device 2, the user can bring the treatment head 5 into contact with the keratinous substance, and the user can activate the system 1 while the treatment head is pressed against the keratinous substance.

[0182] Driven by pump 11, composition C from reservoir 7 circulates in circuit 6, particularly in conduit 6a. Composition C circulating in conduit 6a is released through opening 101 to come into contact with keratin.

[0183] Transducer 13 generates sound waves, enabling the formation and collapse of bubbles within the cosmetic composition C, thereby allowing the desired treatment of keratinous substances.

[0184] Composition C is at least partially reinjected into loop 6, particularly by means of suction pump 30. Composition C re-enters processing head 5 through opening 102 so as to be sent to processing and purification unit 40.

[0185] Upon leaving the processing and purification unit 40, composition C is returned to the storage unit 7.

[0186] The user moves the handheld device from top to bottom with a substantially vertical motion, for example, on the face or body, with the treatment head 5 at the top, in contact with the keratinous material. The user holds the handheld device 2 in an orientation such that its longitudinal axis O is tilted relative to the vertical V at an angle α and / or an angle β less than or equal to 45°.

[0187] The control unit 19 can be designed to detect when the orientation of the handheld device deviates from the recommended operating conditions and alert the user via interface 17. The control unit can also act on circuit 6 and / or transducer 13 to, for example, stop their operation.

[0188] sensor One or more motion and / or orientation sensors 20 may be selected from, among other things, spherical sensors 21, accelerometers 23 and cameras 24.

[0189] The ball sensor 21 consists of a steel ball, and the circuit is completed when the steel ball is tilted beyond a certain point. The ball sensor 21 is advantageously located in the handle 4 of the handheld component 2, as close as possible to the center of rotation of the wrist, so as to... Figure 6 The illustrated zone X reduces the effects of centrifugal force. This is especially important for operations where the handpiece is tilted ±30° (accuracy ±10°).

[0190] The triaxial accelerometer 23 can function as an orientation sensor because gravity acts as a constant acceleration. The triaxial accelerometer 23 is advantageously located in the handle 4 of the handheld component 2, as close as possible to the center of rotation of the wrist, so as to… Figure 7 The illustrated area Y reduces the effects of centrifugal force. This is especially important for operations where the handpiece is tilted ±20° (accuracy ±5°).

[0191] The triaxial accelerometer 23 can be coupled to a gyroscope, which makes it possible to determine the position of the handheld device and thus eliminate errors associated with centrifugal force. Therefore, the triaxial accelerometer 23 coupled to the gyroscope can be located at any position on the handheld device. Figure 7 In area Z of the diagram, it is particularly relevant for operations where the handpiece is tilted ±20° (accuracy ±2°).

[0192] The triaxial accelerometer 23, coupled to the gyroscope, can also be coupled to a triaxial compass, thus making it possible to limit any positional drift over time. The triaxial accelerometer 23, coupled to both the gyroscope and the compass, can also be located anywhere on the handheld device. Figure 7 In area Z of the diagram, it is particularly relevant for operations where the handpiece is tilted ±20° (accuracy ±1°).

[0193] As described above, the motion and / or orientation sensor 20 may also include at least one camera 24.

[0194] This or these cameras 24 can be mounted on the handheld device 2 and image the environment outside the handheld device 2; then the control unit 19 can be designed to calculate the motion of the handheld device 2 based on the provided images (especially images in stereoscopic vision).

[0195] One or more cameras 24 may also be located outside the handheld device 2. The one or more cameras 24 are preferably located in an environment close to the user, and are particularly mounted to the walls and / or ceiling of the room where the system is used. The one or more cameras 24 may be smart cameras, or may be one or more devices external to the system, such as smart mirrors and / or telephones.

[0196] For example, Figure 9 The illustration shows a system 1 that includes a sensor 20 external to a handheld device, which is in the form of at least one camera 24 integrated into a smart device 25, such as a smart mirror or a phone.

[0197] The handheld device 2 is used in the field of view of the camera 24, and the device 25 is able to process the images obtained by the camera 24 in order to identify the handheld device 2 in these images and thus determine the movement and orientation of the handheld device.

[0198] To make the camera 24 easier to identify, the handheld device 2 may be equipped with geometric or luminous reference markers 26, such as several illumination points 26 modulated at a predefined frequency.

[0199] Device 25 can send one or more operating commands to handheld device 2, for example, via a wireless connection 27 of Bluetooth® and / or Wi-Fi type, such as sending a command to stop pump 11 and / or transducer 13 to handheld device 2 when device 25 detects that handheld device 2 is far away from the substance being processed or is being used in an incorrect orientation.

[0200] The device 25 can also emit one or more recommended audio and / or visual messages based on, for example, the path and / or speed of the processing head 5 on the material to be processed.

[0201] When using an external device 25, the electronics inside the handheld device 2 can be designed to allow the establishment of a wireless connection 27 with the device 25 and to perform all or some information processing, enabling the operation of the handheld device 2 to be controlled based on an image and / or to generate messages intended for the user.

[0202] Of course, the present invention is not limited to the examples just described.

[0203] In the case of hair processing, the system according to the invention may include at least one guide and / or comb-like member designed to guide the hair as it moves toward and / or contacts the emitting surface of the transducer.

[0204] The handheld unit may consist of only a single pump that circulates the fluid in the processing area and returns it to a storage tank designed to recycle the used fluid.

Claims

1. A system for treating human keratinous substances, particularly for treating skin and / or hair, said system comprising a handheld device (2), said handheld device (2) comprising: - A treatment head (5) is placed in contact with the keratinous material to be treated, thereby defining at least one treatment area. - At least one loop (6) for the circulation of fluids, particularly for the circulation of the cosmetic composition (C) used in the treatment. - At least one ultrasonic transducer (13) for transmitting sound waves at least into the fluid present in the processing zone. The system further includes: - At least one detector (20) for detecting the movement and / or orientation of the handheld device (2) relative to the keratinous substance to be treated and / or relative to a predefined reference axis, particularly the vertical axis. - At least one control unit (19), one or more of the detectors (20) communicate with the at least one control unit (19), the control unit being designed to act on the operation of the handheld device based on at least one piece of information derived from one or more of the detectors.

2. In the system according to claim 1, the transducer (13) is operated by the control unit (19).

3. The system according to any one of claims 1 and 2, wherein the handheld device (2) includes at least one reservoir (7) for containing fluids used in the process.

4. The system according to the preceding claims, wherein the handheld device (2) includes at least one electric pump (11) for circulating the fluid between one or more of the reservoirs (7) and the keratinous material to be treated, the pump (11) being operated by the control unit (19), the control unit (19) preferably being designed to act on the pump (11) to reduce or increase the flow rate of the fluid in the fluid circulation loop (6) based on data derived from the detector (20).

5. The system according to any one of the preceding claims, wherein the detector (20) is inside the handheld device (2).

6. In the system according to any one of the preceding claims, the detector (20) is selected from a tiltmeter, especially a tiltmeter of the type involving conductive droplets or balls, or an accelerometer, especially a MEMS.

7. The system according to any one of the preceding claims, wherein the detector (20) comprises a gyroscope.

8. The system according to any one of the preceding claims, wherein the detector (20) is sensitive to a magnetic field.

9. The system according to any one of the preceding claims, wherein the detector (20) is external to the handheld device (2), and the system (20) preferably comprises: A camera designed to observe the handheld device (2); And a processing device for determining, at least based on signals delivered by the camera, the movement, position and / or orientation of the handheld device (2) relative to the keratin material to be processed and / or relative to the reference axis, wherein the detector (20) is connected to the control unit (19) in particular via a wireless connection.

10. The system according to any one of the preceding claims, comprising a support (3) designed to receive the handpiece (2) when the system (1) is not used to process keratinous material, the support (3) being particularly designed to electrically power the handpiece (2) when it is received in the support (3), the detector (20) preferably being designed to detect the presence of the handpiece (2) on the support (3).

11. The system according to any one of the preceding claims includes an audio output (15) designed to deliver audible information to a user and connected to the control unit (19), wherein the information delivered by the audio output (15) is preferably an instruction to move, position and / or orient the handheld device (2) in response to data derived from the detector (20).

12. The system according to any one of the preceding claims includes an illuminant indicator (173) and / or a display screen (171) designed to deliver visual information, such as a flash or text, the illuminant indicator (173) and / or the display screen (171) being connected to the control unit (19), the delivered information preferably being instructions for moving, positioning and / or orienting the handheld device (2) in response to data derived from the detector (20).

13. The system according to any one of the preceding claims includes a tactile device designed to mechanically interact with a user, particularly by vibration, to deliver information to the user, the tactile device being connected to the control unit (19), the information delivered by the device preferably being instructions for moving, positioning and / or orienting the handheld device (2) in response to data derived from the detector (20).

14. The system according to any one of the preceding claims, wherein the handheld device (2) includes a solenoid valve connected to the control unit (19), the control unit (19) being designed to operate the solenoid valve based on data from the detector (20) in order to reduce or increase the flow rate of fluid in the fluid circulation loop (6).

15. The system according to any one of the preceding claims, wherein the handheld component includes a handle, and the detector is an accelerometer positioned in the handle of the handheld component.

16. The system according to any one of the preceding claims, wherein the detector is a spherical inclinometer, the spherical inclinometer being positioned in the handpiece in such a manner as close as possible to the axis of rotation of the user's wrist.

17. A method for cosmetic treatment of keratinous material by means of a system (1) as defined in any of the preceding claims, the method involving exposing at least one area of ​​the keratinous material to ultrasound emitted by the transducer (13).

18. The processing method according to the preceding claim involves vertically moving the handheld device (2) from top to bottom in the area.

19. The processing method according to the preceding claims, wherein the longitudinal axis (O) of the handpiece (2) is tilted at an angle α of less than or equal to 45° relative to the vertical (V) toward the front or back of the handpiece during the vertical movement of the handpiece (2), and / or tilted at an angle β of less than or equal to 45° toward the side of the handpiece.

20. A method for controlling the operation of a system as defined in any one of claims 2 to 16, comprising: (a) The movement of the handheld device and / or the orientation of the handheld device are detected by the detector (20). (b) The detection information obtained in step (a) is transmitted to the control unit (19). (c) Based on the detection information, send at least one instruction from the control unit (19) to the pump (11) and / or the transducer (13) and / or the solenoid valve and / or the user interface (15; 17; 171; 173).

21. The method for controlling operation according to the preceding claim, wherein the instruction sent to the pump (11) is to stop, start, or modify the flow rate of the pump (11), and / or The instructions sent to the transducer (13) are to stop, start, or modify the power of the sound waves emitted by the transducer (13), and / or The command sent to the solenoid valve is the degree to which the solenoid valve is opened, and / or The instructions sent to the user interface (15; 17; 171; 173) are to issue an audible beep or phrase announcing the system’s concise usage mode, and / or to establish a flash of a predefined color and / or colored lighting, and / or to display a message indicating the system’s concise usage mode, and / or to vibrate.

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