FR3002148A1 - Cosmetic device for e.g. non therapeutic treatment, of skin, has sources e.g. LEDs, emitting light with different wavelengths, where removable and interchangeable brush end and light emission end are integrated into body - Google Patents

Abstract

The device has a group of light sources e.g. LEDs (11), emitting light with first wavelength, and a second group of light sources emitting light with second wavelength. A light emission end (2) is integrated into a body (3) in an irremovable manner, where a cosmetic treatment end i.e. brush end (1), is removable and interchangeable. A drive unit moves the cosmetic treatment end. A sealing unit is provided between the body and a drive axle of the cosmetic treatment end. Independent claims are also included for the following: (1) a receptacle and cosmetic device assembly (2) a cosmetic method.

Description

Background of the Invention The present invention relates to a cosmetic skin treatment device, i.e. non-therapeutic, by exposing a skin area to light combined with cleaning the same area. The present invention also relates to an apparatus comprising such a device and a cosmetic method comprising the use of such an apparatus. DISCUSSION OF THE PRIOR ART There are apparatus for dermatological treatment of the skin by light therapy. For example, US-A-7 887 533 describes such a device for professional use, including doctors. This apparatus comprises a light emitting diode (LED) assembly system arranged in strips and coupled with cylindrical lenses. The lenses make it possible to adjust the radiation angle of each LED light beam with greater or lesser flexibility. WO-A-2012/086991 discloses an apparatus using several wavelengths concomitantly to treat different pathologies. There are also devices for the cosmetic treatment of the skin by exposure to light which are of private use. A user holds the device in hand and directs it to expose a given skin area to light radiation emitted by LEDs arranged in the device. For example, the devices described in documents FR-A-2 917 299, US-A-2010/274329 or WO-A-2008/057640 may be mentioned. Known devices typically include one or more LEDs disposed in a housing. The number of LEDs is often important in order to guarantee homogeneity of the treatment and the emission wavelength of the LEDs is chosen according to the envisaged applications. For example, EP-A-1 648 385 proposes to use at least a first source emitting yellow light (with a dominant wavelength at about 590 nm) and at least a second source emitting infrared light (with a dominant wavelength at about 850 nm) with controlled powers for each source. There are also cleaning or skin care devices an application device comprising: a body configured to receive a cleaning or care tip, a means for driving the tip in vibration, in oscillation, rotation or tapping relative to the body. US 2007/0123808 discloses a device having a body with two locations on two opposite sides to attach two different cosmetic treatment tips. One end may have a brush and the other may have an abrasive surface. The goal of this device is the oxygenation of the skin. This device is not a skin care encompassing a cleansing and anti-aging action. Talika's laboratories have designed a portable device for light treatment, the "Light DUO" ®, each side emits a distinct wavelength: - on one side, it emits a wavelength of 590 nm, to reactivate collagen synthesis and elastin production, - on the other hand, it emits a wavelength of 525 nm, to regulate the production of melanin, responsible for the coloring of the skin. Thanks to the combined use of these two light treatments, wrinkles are smoothed and brown spots are reduced. However, this device is not suitable for cleaning the skin. This must be done by the person separately. There is therefore a need for a cosmetic treatment device that allows both: - cleaning or care of a body surface, and - an anti-aging treatment by light. This device must be able to be used with a cosmetic composition or water without risk of electric shock for the user. This device must also be designed so that the liquid product does not damage the light source or the means for moving the cleaning or care tip.

For this purpose, the invention proposes a cosmetic device comprising: - a body, - a first cosmetic treatment tip, - a second light emission tip, the second tip being immovably integrated into the body.

The invention also relates to an assembly - or kit - comprising a receptacle - pot, bottle, tube or other - of a cosmetic composition and a device according to the invention. The cosmetic composition of such a kit may be chosen from a care for oily skin and / or an anti-aging and / or depigmentation treatment. The invention also relates to a cosmetic process comprising the use of the cosmetic device according to the invention. Advantageously, the cosmetic process comprises a step of applying a cosmetic composition. First cosmetic treatment tip According to the invention, the term "cosmetic treatment" in particular: - A treatment, - A wash, - A purification of the skin, - An exfoliation, - An desquamation, - A massage, - A thinning, - Make-up, - Make-up removal, - Cleaning, or - Whitening action.

In particular, the first tip is a cleaning tip. The advantage of choosing a cleaning tip is that it prepares the skin for the action of light. More particularly, the first tip is removable and interchangeable. In this case, the person can choose his first tip according to his needs and type of skin. Thus, the first nozzle is adapted to be mounted reversibly on the body of the device. Advantageously, the first nozzle can be moved by a drive means. In general, the latter is housed in the body of the device These training devices and their setting in motion are known to those skilled in the art. (i) Movement of the first tip Examples of movement are: a) Simple movement: - Rotational movement - Oscillation movement - Rotational movement that can be inverted by the user to provide a massage or traction upwards. the skin - Movement of percussion - Movement of vibration b) Composite movement: - Rotational movement associated with percussion - Rotational movement associated with vibration (ii) Material forming the first endpiece The first endpiece may comprise a body of application comprising a cellular material which can be elastically deformable and / or compressible. This material can be a foam. The foam may be made of a material selected from the following list: Polyurethane, polyether, polyester, polyvinyl chloride, polyethylene, EVA, latex, silicone, SIS, SEBS, silicone elastomer, latex elastomer, nitrile elastomer, butyl elastomer , Neoprene®, NBR, SBR, this list not being limiting. The first tip may have a composite structure with several layers of different natures, for example several types of foams. The applicator portion may comprise a slot or a hole emerging on the application surface. The first end piece may have any shape. It may have a circular, oval or polygonal section, for example triangular, square, hexagonal, etc. The first tip may have abrasive properties. By "abrasive property" is meant a surface that when moved over the skin removes at least a part of the dead cells from the surface. Such surfaces can be characterized by an abrasive power of between 0.01 and 0.03 g / cm 2 / min. Abrasive power refers to the amount of plaster removed per minute, per square centimeter of an abrasive surface applied to a 50 mm thick plaster tile with a Black and Decker CD400 135W sander, the resulting pressure on the resulting plasterboard the weight of the sander, of which only the movement in the plane of the abrasive surface is constrained.

Such first endpieces are obtained either by taking a substantially rigid cellular material or by incorporating hard grains into a flexible cellular material. The first tip may comprise soluble exfoliating particles or not, especially in water and / or in an oil. Such particles are described in particular in the French patent application No. 11 57 678 filed August 31, 2011 by the Applicant. By "exfoliating particles" is meant in the sense of the present invention particles capable of producing frictional wear. "Soluble particles in a product" is understood to mean particles which solubilize in the product at a concentration greater than 0.1% by weight relative to the total weight of the particles initially taken before the dissolution, the time given to the particles to solubilize being one hour, at room temperature. This solubility is measured in a beaker and then dosage of the asset (s). The particles are soluble in water and / or in an oil. Examples of particles soluble in water and / or in an oil are salts such as NaCl, salts, sugars, such as xylitol, polymers such as starch, dextrins, maltodextrin, cyclodextrins or waxes, glycols of high molecular weight, vitamins such as vitamin C, hydrosilic or fat soluble silicas such as Aerosils, clays, etc.

The particles can also be obtained by lyophilization or atomization, such as those described in FR-A-2,727,312 or those based on modified starch, described in documents EP-A-0 938 892 and EP-A Alternatively, the exfoliating particles are soluble in an oil. The exfoliating particles may also be insoluble, in water and / or in an oil. Such particles are especially described in US-2005/0223511, EP-1 961 456, EP 1 764 077, US 2006/0246027, EP 0 445 914, FR-2 860 525, FR 2 858 757, FR 2 825 246 and US 2010/0028392. The first sheet and the second sheet may have no fibers other than the bristles of the flocking coatings. This reduces their porosity and facilitates their cleaning.30 The foam may be a soft and flexible foam particularly suitable for spreading the product, sometimes also called sponge. The applicator may for example be a hydrophilic crosslinked polyester foam, for example with a density equal to 32 kg / m 3.

It is also possible to envisage a sponge conventionally used to apply foundations such as NBR, for example Yukilon® from the company PENTHOUSE GROUP. The first tip may be made of soft plastic injected, for example elastomer and have massage reliefs, for example pins or balls The first tip is for example an elastomer such as SEBS or silicone. The first tip may be a thermocompromised foam. The thermocompression allows to create reliefs on the surface of the foam and / or to complex it with an elastic fabric, which allows to have the flexibility of the foam but the touch of a textile more pleasant than that of the plastic. An example of a thermocompromised foam is a closed-cell polyolefin foam, for example polyethylene, thermocompressed with a specific mass of 33 kg / m 3, which is, for example, complexed with an elastic fabric such as, for example, Lycra®. The first end piece may be a grater made of plastic, metal or glass. The first tip may be a synthetic or natural bristle brush, for example a brushed pile with tufts of strands of Nylon 6.12 diameter 0.075 mm having undergone milling and grinding to make them very soft in contact with the skin of the face.

The first tip may have rotating moving elements, such as balls or rollers, smooth or raised to come to massage the skin. Second light emitting tip The second tip may constitute an insert arranged on the body of the apparatus. It can also be partially housed in the body of the device. According to one embodiment, the device according to the invention comprises a plurality of light emission sources, at least a first group of sources emitting light at a first wavelength and at least a second group of sources emitting a light. light at a second wavelength. Each source of light emission is also designated by LED. Each 5 LED emits a light beam with a given power and a given angular aperture and this beam is transmitted to a skin area to be treated. (i) Distance sensor According to one embodiment, the light emitting tip comprises a plurality of distance sensors. The distance sensor makes it possible to measure a distance between the reference surface and the area of skin to be treated in order to allow control of the transmission power of the LED at the measured distance. The advantage of this embodiment lies in the fact that it is possible to slave the transmission power of each light source to the distance measured by the sensor. This continuous and real-time control of the power emitted by the light sources makes it possible to guarantee a homogeneity of the light intensity on the area of skin to be treated throughout the exposure. Such sensors are described in the patent application No. 1260060 filed October 23, 2012 by the Applicant. According to one embodiment, the electronic unit of the device is adapted to interrupt the emission of each light source when the distance measured by the sensor is less than a first threshold and / or greater than a second threshold. For example, a sensory information element may be activated when the emission of at least one light source is interrupted. (ii) Lenses for modifying the angular aperture of emitted beams According to one embodiment, the light emitting tip comprises a screen positioned facing the light sources and adapted to transmit the light beams of each source, in wherein the screen comprises at least one fingerprint modifying the angular aperture of the transmitted beam of at least one light emitting source.

Such a solution is inexpensive and ensures that the emitted light beam is transmitted to the area to be treated with a homogeneous power. An LED imprint or imprint can be provided for some LEDs only. Such lenses are described in the patent application No. 1260086 filed on October 23, 2012 by the Applicant. Sealing of the device Advantageously, the cosmetic device according to the invention comprises sealed supply means. For example, it is an inductive loading. More advantageously, the cosmetic device according to the invention comprises sealing means between the body and the drive shaft of the first endpiece. In particular, these means are arranged at the output of the axis of the motor. The seal is for example made by adding a seal, especially silicone. Thus, the first end is attached in a specially sealed manner to the body of the cosmetic device. This sealing prevents leakage of fluid to the drive means of the first nozzle. In particular, it is possible to use as a first endpiece a Clavisonic type mouthpiece. BRIEF DESCRIPTION OF THE DRAWINGS Other features and advantages of the present invention will emerge on reading the detailed description which follows, made with reference to non-limiting embodiments and illustrated by the appended drawings, in which: FIG. a perspective view of a first example of a cosmetic appliance according to the invention; - FIG. 2 shows another perspective view of the cosmetic appliance of FIG. 1. The appended figures are provided by way of illustration only and to facilitate understanding of the invention. Not all figures are shown in scale and some elements of the devices and apparatus described may not be shown in the figures. FIG. 1 illustrates an example of a cosmetic device according to the invention. The device comprises a body 3 on which is mounted a brush tip 2 and a light emitting tip 1. The brush tip 2 and the light emitting tip 1 are disposed on two opposing faces of the body 3. one to another. The body 3 has in the embodiment described a roller shape defined by: - its central thickness equal to 70 mm, - its maximum cross sectional dimensions equal to 75mm x 100mm. The cosmetic treatment tip 2 can be mounted and disassembled on the body 3. For energetic cleaning, the tip 2 can be a brush. It can be replaced by another type of tip, for example a foam tip or a thermo-compressed foam tip, for a softer cleaning. The tip 2 may in particular be assembled on the body 3 by snapping, clipping, screwing or mounting force. The body 3 can accommodate driving means 5 in movement of the tip 2 relative to the body 3. This movement is preferably an oscillating movement about an axis of oscillation X which is fixed relative to the body 3 The drive means 5 can comprise an electric motor housed in the body 3, powered by one or more cells or batteries 7. These can be recharged by means of the charging surface 8. The device can comprise a button on / off 60 to cause or stop the drive of the treatment tip 2. The power of the movement can be adjusted by the button 61. The tip 1 is fixed on the immovable body 3. 30 The tip 1 has LEDs. The surface of this tip 1 is completely sealed. It has an integrated screen.

According to a preferred embodiment of the device, the tip 1 comprises ten LEDs 11 at 590 nm and four LEDs 11 at 870 nm. LEDs 11 at 590 nm have an angular aperture of 120 ° and LEDs 11 at 870 nm have an angular aperture of 140 °. The distance between the screen and the LEDs 11 is 0.5 mm and the distance (designated DIST) between the LEDs 11 and the skin area to be treated is measured continuously by a sensor 10 located substantially in the center of the device L '. screen has a refractive index of 1.586 and the thickness (designated m) of the screen is 1.5 mm. The power of each LED 11 is continuously slaved to the distance DIST measured by the sensor 10. Thanks to preliminary optical studies on the system, it is possible to deduce a servo function of the power of each LED 11 in relation to the distance measured DIST to obtain a stable and homogeneous overall power on the surface to be treated. Such an arrangement of the device according to the invention allows to treat homogeneously with two different types of radiation a skin area of 42 cm2 about 40 mm distance and about 32 cm2 to 20 mm distance.

The microcontroller to control the operation of the LEDs can be housed in the body 3 or in the tip 1 itself. The tip 1 is operated by switch 9. The latter comprises the control to choose the type of light (pulsed or continuous) and to set the duration of the cosmetic treatment (35 minutes or 70 minutes).

The sealing of the device preferably corresponds to the IP67 norm index. The present invention has been described with reference to particular embodiments, illustrated in FIGS. 1 and 2, and with reference to particular examples, but it is understood that other variants may be envisaged by those skilled in the art, in particular the number and types of LEDs may vary and other arrangements and dimensions than those described in Figures 1 and 2 may be considered to constitute devices according to the invention.

Claims (13)

REVENDICATIONS1. Cosmetic device comprising: a body (3), a first cosmetic treatment nozzle (1), a second light-emitting nozzle (2), the second nozzle (2) being immovably integrated into the body (3), Device according to claim 1, comprising a plurality of light emitting sources, at least a first group of sources emitting light at a first wavelength (X1) and at least a second group of sources emitting light. at a second wavelength (X2). 3. Device according to any one of the preceding claims, the first nozzle (1) being removable and interchangeable. 4. Device according to any one of the preceding claims, the first nozzle (1) being a cleaning tip. 5. Device according to one of the preceding claims characterized in that it comprises a drive means for setting in motion the first endpiece 6. Device according to any one of the preceding claims, comprising sealed supply means of the first nozzle (1). 7. Device according to any one of the preceding claims, comprising sealing means between the body (3) and the drive shaft of the first endpiece (1). 30 8. Device according to any one of the preceding claims, comprising a plurality of distance sensors (10). 9. Device according to any one of the preceding claims, wherein the light emitting tip comprises a screen positioned opposite the light sources and adapted to transmit the light beams of each source, the screen comprising at least one imprint modifying the angular aperture of the beam transmitted from at least one light emitting source. An assembly comprising: a receptacle of a cosmetic composition; a cosmetic device according to any one of claims 1 to 9. 11. An assembly according to claim 10, wherein the cosmetic composition is selected from a oily skin care product and / or an anti-aging and / or depigmentation care product. 12. A cosmetic process in which a body surface is exposed to light by means of a device according to any one of claims 1 to 9. 13. Cosmetic process according to claim 12, comprising a step of applying a cosmetic composition.