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WO2010079463A1 - Dispositif de traitement de matières kératiniques humaines - Google Patents

Dispositif de traitement de matières kératiniques humaines Download PDF

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Publication number
WO2010079463A1
WO2010079463A1 PCT/IB2010/050101 IB2010050101W WO2010079463A1 WO 2010079463 A1 WO2010079463 A1 WO 2010079463A1 IB 2010050101 W IB2010050101 W IB 2010050101W WO 2010079463 A1 WO2010079463 A1 WO 2010079463A1
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WO
WIPO (PCT)
Prior art keywords
action
light source
range
keratinous materials
light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IB2010/050101
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English (en)
Inventor
Roxane Gavillon
Jean-Thierry Simonnet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LOreal SA
Original Assignee
LOreal SA
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Filing date
Publication date
Application filed by LOreal SA filed Critical LOreal SA
Publication of WO2010079463A1 publication Critical patent/WO2010079463A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A61N5/0613—Apparatus adapted for a specific treatment
    • A61N5/0616—Skin treatment other than tanning
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A61N5/0613—Apparatus adapted for a specific treatment
    • A61N5/0624—Apparatus adapted for a specific treatment for eliminating microbes, germs, bacteria on or in the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A61N5/067—Radiation therapy using light using laser light
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
    • A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
    • A61B18/203—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser applying laser energy to the outside of the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
    • A61B2018/00452—Skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
    • A61B2018/00452—Skin
    • A61B2018/0047—Upper parts of the skin, e.g. skin peeling or treatment of wrinkles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A61N2005/0635—Radiation therapy using light characterised by the body area to be irradiated
    • A61N2005/0643—Applicators, probes irradiating specific body areas in close proximity
    • A61N2005/0644—Handheld applicators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A61N2005/065—Light sources therefor
    • A61N2005/0651—Diodes
    • A61N2005/0652—Arrays of diodes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A61N2005/0658—Radiation therapy using light characterised by the wavelength of light used
    • A61N2005/0659—Radiation therapy using light characterised by the wavelength of light used infrared
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A61N2005/0658—Radiation therapy using light characterised by the wavelength of light used
    • A61N2005/0661—Radiation therapy using light characterised by the wavelength of light used ultraviolet
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A61N2005/0658—Radiation therapy using light characterised by the wavelength of light used
    • A61N2005/0662—Visible light

Definitions

  • the present invention relates to treating human keratinous materials, in particular the skin and the hair .
  • Keratinous materials tend to lose some of their qualities under the action of factors such as natural greasing, sebum, sweat, eliminating skin flakes, pollution, using detergents, aging, bacteria, and humidity, amongst others.
  • the skin is usually cleaned with the help of cleansing compositions, frequently including surfactants, particles having an abrasive effect (for scrubbing) , and amphiphilic polymers. Nevertheless, situations may exist in which a person desires to clean the skin or the hair without using water or a cleansing composition. Furthermore, frequent use of surfactants can irritate more sensitive skins.
  • An object of the invention is to prepare the skin for cleansing by a non-detergent method in order to limit significantly the quantity of washing agent that is used subsequently, for the purpose of reducing irritation, in particular for sensitive skins.
  • Patent application KR 2004/0101585 describes an appliance for cleansing and disinfecting the skin by photocatalysis activated by a source of ultraviolet (UV) or visible light. Such an appliance makes it possible to avoid using a cleansing composition. The action of the appliance is nevertheless limited to cleansing.
  • UV ultraviolet
  • the invention seeks to satisfy these needs in full or in part, and it provides a device for treating human keratinous materials, in particular the skin or the hair, the device comprising: • a support bearing a photocatalytic material and configured to come into contact with the keratinous materials;
  • a first light source configured to illuminate the photocatalytic material so as to subject impurities present in contact with said material to a photocatalytic reaction
  • a second light source different from the first and configured to emit light essentially in a range of ⁇ 100 nanometers (nm) around at least one dominant wavelength, in order to exert a cosmetic or therapeutic action on the treated keratinous materials.
  • the term "essentially” should be understood as meaning that light emitted outside the range is negligible or even not measurable .
  • cleansing keratinous materials by photocatalysis prior to or simultaneously with exposure of the keratinous materials to the second light source (the source that serves to apply cosmetic or therapeutic treatment to said materials) can be beneficial to the effectiveness of the light emitted by the second light source that is used for treatment, compared with its effectiveness when it is applied on its own or in association with conventional cleansing of the keratinous materials.
  • the invention may be applied to cleansing and treating various regions of the face or the body, such as the forehead, the cheeks, the chin, the hands, the armpits, the groin, the feet, the scalp, or the hair.
  • the device may be suitable for being carried in one hand only. It may be wireless and rechargeable, where appropriate.
  • the invention enables a single device to be used both for cleansing keratinous materials and for applying cosmetic or therapeutic treatment thereto by phototherapy.
  • cosmetic treatment is used to mean improving the state and/or the appearance of keratinous materials, by means of a preventative or curative action that is not therapeutic.
  • the cosmetic treatment of the invention is not depilatory and is not depigmenting, and it is not intended for painful skin or pathological situations.
  • the treatment may stimulate or inhibit a property of the keratinous materials, as explained in detail below.
  • the device may be used for eliminating impurities over a duration lying in the range 10 minutes or less to one minute or less, during which time the photocatalytic material is in contact with the keratinous materials and is subjected to illumination by the first source.
  • the device may optionally be in contact with the keratinous materials.
  • the support may comprise a substrate that is transparent or translucent to the radiation emitted by the first and second sources.
  • the second light source may be substantially monochromatic, with a spectrum width that is less than or equal to 50 nm, better less than or equal to 15 nm, or even 10 nm.
  • the first light source may comprise one or more light-emitting diodes (LEDs) .
  • the second light source may comprise one or more LEDs or laser diodes.
  • the second light source may emit continuously.
  • the device may be configured to enable the user to control the operation of the light sources independently of each other.
  • the power of the incident light on the photocatalytic material may lie in the range 0.01 milliwatts per square centimeter (mW/cm 2 ) to 500 mW/cm 2 , and preferably in the range 1 mW/cm 2 to 100 mW/cm 2 .
  • the light emitted by the second source may pass through the support prior to reaching the keratinous materials .
  • the dominant wavelength of the second source may be selected so as to present: action on the production of sebum; action against acne; action against rosacea; action of rejuvenating the skin; action of improving the elasticity of the skin; action on the production of collagen; action on hair growth; action on wrinkles; action on stretch marks; action on cellulite; action on psoriasis; action on burns or wounds; action on reducing scars; action against inflammation of the skin; and/or action on perspiration; amongst others.
  • the dominant wavelength (s) of the second light source may be selected from any one of the following ranges: 390-450 nm; 400-470 nm; 530-600 nm; 600-700 nm; 620-680 nm; 760-880 nm; and 800-1000 nm.
  • the invention also provides a cosmetic treatment method, e.g. by implementing a device as defined above, the method comprising the steps consisting in: a) bringing a photocatalytic material into contact with the keratinous materials and degrading impurities in contact with the photocatalytic material by a photocatalytic effect by exposure to the light emitted by the first light source; and b) exposing the keratinous materials to the radiation emitted by a second light source that is different from the first and that is configured to emit light essentially in a range of ⁇ 100 nm about at least one dominant wavelength, and present cosmetic or therapeutic action on the treated keratinous materials, e.g. in order to obtain a cosmetic effect.
  • Step b) may take place simultaneously with step a) , or in a variant step b) may take place after step a) .
  • the method may also include the following step: c) cleansing the exposed skin using a gentle skin cleanser .
  • Eliminating impurities may enhance the action of the light radiation used for exerting the cosmetic or therapeutic action, e.g. by reducing the shine or sheen associated with the presence of sebum, thus enabling reflection losses of the radiation used for the phototherapy to be reduced.
  • the dominant wavelength (s) of second light source may be selected from:
  • the presence of two light sources within the same device may also enable common components to be used for both sources, e.g. a common power supply and/or a shared electronic circuit, e.g. for controlling light intensity and one and/or the other of the sources and/or the duration of illumination.
  • optical components may also be common to both light sources, e.g. for diffusing or focusing light on the keratinous materials.
  • the two light sources may be distinct.
  • the two light sources may be formed from a common illuminant used in association with a frequency multiplier for one of the sources.
  • the support may comprise a substrate, also referred to as a window, that is transparent or translucent and that may be covered on its outside face by the photocatalytic material, which material may for example be in the form of a coating comprising photocatalytic particles.
  • the substrate must be sufficiently transparent at the wavelength used for photocatalysis and also at the wavelength used for the cosmetic or dermatologic treatment when the light used for said treatment passes through the substrate prior to reaching the keratinous materials.
  • a different configuration may be provided, with the light that is used for cosmetic or therapeutic treatment then reaching the keratinous materials without passing through the substrate.
  • the radiation from the second source also to pass through the substrate, since that may enable the device to be made to be relatively compact.
  • the photocatalytic material is sensitive to the action of the light radiation used for photocatalysis .
  • Photocatalysis may rely on exciting a photocatalyst with light radiation presenting energy that is not less than that of its forbidden band.
  • These catalytic materials used may be semiconductors having a wide forbidden band, e.g.
  • oxides or sulfides such as TiO 2 , ZnO, ZnO 2 , CeO 2 , Cu 2 O, SiO, SiO 2 , MoS 2 , InPb, RuO 2 , ZrO 2 , SnO 2 , CdS, ZnS, SrTiO 3 , GaP, InP, GaAs, BaTiO 3 , KNbO 3 , Fe 2 O 3 , Ta 2 O 5 , WO 3 , NiO, and compounds thereof, this list not being limiting.
  • the photocatalytic material may comprise titanium oxide, which is advantageous because of its chemical stability and its low cost.
  • the photocatalytic material degrades organic dirt present at the surface of the material.
  • the speed of the photocatalytic reaction depends on the intensity of the flux of incident photons. Photon intensity is governed mainly by the power of the light radiation and by the distance between the light emission source and the photocatalyst.
  • a photocatalyst such as TiO 2
  • photons presenting energy that is not less than its energy gap of 3.2 electron volts (eV)
  • an electron may go from the valance band to a vacant orbital of the conduction band. That creates an oxidation site or a positive hole in the valence band and a reduction site with the release of an electron in the conduction band. Redox reactions are then possible.
  • the absorbed impurities are degraded by the radical ions formed at the surface of the TiO 2 , leading to CO 2 and H 2 O mineralization .
  • photocatalytic titanium dioxides examples include those sold by the supplier Kronos under the references vlp 7000, which is active in visible light, and uvlp 7500, which is active in ultraviolet radiation .
  • the photocatalytic material may be deposited on the substrate in a continuous form so as to occupy the entire area of the outside surface of the substrate.
  • the photocatalytic material may be deposited on the substrate without occupying the entire area of the outside surface of the substrate, e.g. by being deposited in the form of islands or of a silk screen.
  • the coating of photocatalytic material may be obtained by various deposition methods, e.g. a chemical vapor deposition (CVD) method, a cathode sputtering method, or a sol-gel type method.
  • the photocatalytic material may be in particulate form.
  • the substrate bearing the photocatalytic material may be made of glass, quartz, polycarbonate, polymethyl methacrylate, polypropylene, polyurethane, polyvinylbutyral, poly (ethylene terephthalate) , poly (butylene terephthalate), an ionomer resin such as an ethylene and acrylic acid copolymer or an ethylene and methacrylic acid copolymer neutralized by a polyamine, a cyclo-olefin copolymer such as ethylene/norbornene copolymer or ethylene/cylopentadiene copolymer, polycarbonate/polyester copolymer, ethylene/vinyl acetate copolymer or the like, alone or in mixtures.
  • the first light source may emit UV radiation. Under such circumstances, preference should be given to making the substrate out of materials that are sufficiently transparent to light in the range 208 nm to 400 nm.
  • the support may have various shapes, for example it may be circular, square, or rectangular, with an outside face that is plane or outwardly convex, and it may have a section taken perpendicularly to the path of the light that occupies an area lying in the range 0.5 square centimeters (cm 2 ) to 50 cm 2 , for example.
  • the support and in particular the substrate may include means that enable impurities to be absorbed, e.g. particles that absorb oils and more specifically sebum, it being possible for said particles to be secured to the support in various ways, e.g. by being grafted or adhesively bonded thereto.
  • the support may comprise fibers, more particularly mineral fibers .
  • the mineral fibers may be covered in photocatalytic particles.
  • the fibers may absorb the above-mentioned impurities.
  • the support may also be constituted by a block of interlaced fibers forming a porous block, that is capable of absorbing the above-mentioned impurities, and that is removable, repositionable, and suitable for cleaning in water .
  • the support may receive surface treatment for conferring a certain amount of roughness thereto, where such roughness may improve capture of impurities by the device.
  • the first light source and the second light source may be selected from incandescent, halogen, UV, fluorescent, and flash lamps, lasers, and light-emitting diodes (LEDs, organic LEDs (OLEDs), ...) . It is preferable to use LEDs.
  • the light emitted by the first light source or by the second light source may be pulsed or it may be non- pulsed.
  • the light emitted by the first light source may be non-pulsed.
  • the light emitted by the second light source may be pulsed or non-pulsed depending on the application .
  • the power of the first light source may lie in the range 0.01 mW/cm 2 to 500 mW/cm 2 and preferably lies in the range 1 mW/cm 2 to 100 mW/cm 2 .
  • the power of the second light source depends on the treatment undertaken.
  • the illumination need not be distributed uniformly over the treated surface and it need not be continuous in time. As a result, certain zones may receive, either locally or at certain moments, powers that are higher, while other zones may receive powers that are lower or even zero.
  • the light may be concentrated on a few zones within the region being treated.
  • An optical system may be used for focusing or defocusing the light, e.g. a system comprising at least one lens or microlenses.
  • the second light source may be substantially monochromatic, presenting a spectrum width that is less than or equal to 50 nm, or even 10 nm, or 2 nm, or 1 nm.
  • the spectrum width is the difference between the wavelengths situated on either side of the dominant wavelength and for which intensity is equal to Imax/10.
  • Imax designates the maximum light intensity at the dominant wavelength.
  • the device according to exemplary embodiments of the invention may implement a plurality of light beams that are parallel, converging, or diverging.
  • a plurality of beams may be caused to converge on a common point in order to perform the cosmetic or therapeutic treatment. This may enable zones to be treated that are situated beneath the surface of the skin, in particular when the second source emits in the infrared.
  • the treatment may comprise exposing the keratinous materials to radiation at a plurality of different dominant wavelengths, presenting effects that combine, e.g. radiation in the visible and radiation in the infrared.
  • the device may include additional light sources, other than the first and second sources.
  • LEDs make it easy to provide a plurality of substantially monochromatic sources that emit at different dominant wavelengths. Some LEDs may also be used that emit at at least two dominant wavelengths, e.g. one in the visible and another in the infrared. Multicolor LEDs may be used.
  • the treatment may also include emitting radiation at different dominant wavelengths in succession, with radiation at one of the wavelengths enhancing the action of the radiation at the other wavelength, for example.
  • the region for treatment may extend over several tens of square centimeters, and the light beam from the second source may be swept over this zone.
  • the sweeping may be done by hand.
  • the device used may emit light as a beam and the zone may be swept by moving the appliance more or less perpendicularly to said beam. It is possible to cover the surface for treatment continuously, i.e. it is possible for all of the points of the skin or other keratinous materials for treatment to be subjected to the illumination at least once, or else it is possible to cover part of the surface, i.e. to ensure that certain points but not others are subjected at least once to illumination.
  • the treatment method may include applying a composition before or after the treatment by exposure to the radiation emitted by the second source.
  • the dominant wavelength of the second light source may be selected to lie in the range 620-680 nm or 760- 880 nm to provide action that stimulates hair growth, e.g. using power lying in the range 1 mW/cm 2 to 250 mW/cm 2 , and better in the range 10 mW/cm 2 to 100 mW/cm 2 , as described in application CA 2 500 961.
  • the treatment may comprise applying energy lying in the range 1 joule per square centimeters (J/cm 2 ) to 100 J/cm 2 .
  • the dominant wavelength of the second light source may be selected to lie in the range 630-660 nm or 790- 904 nm in order to combat hair loss, as described in application US 2006/0247742.
  • a He-Ne or Ga-As laser may be used.
  • LEDs having a dominant wavelength in the range 630-660 nm and luminous intensity lying in the range 2000 millicandelas (mcd) to 4000 mcd may be used.
  • the dominant wavelength of the second light source may be selected to lie in either of the ranges 530-600 nm and 760-880 nm.
  • the dominant wavelength of the second light source may be selected to lie in one of the ranges 620-680 nm and 760-880 nm at a power that is adapted to treating wrinkles, as described in application CA 2 500 961, or in one of the ranges 400-470 nm, 530-600 nm, and 630-680 nm, as described in application WO 2008/057640.
  • Treating stretch marks The dominant wavelength of the second light source may be selected to lie in the range 760-880 nm at power adapted to treating stretch marks (striae) , as described in application CA 2 500 961.
  • the dominant wavelength of the second light source may be selected to lie in the range 760-880 nm at a power adapted to treating cellulite, as described in application CA 2 500 961.
  • Treating psoriasis The dominant wavelength of the second light source may be selected to lie in the range 600-700 nm at a power adapted to treating psoriasis, as described in application CA 2 500 961.
  • the dominant wavelength of the second light source may be selected to lie in the range 760-880 nm at a power adapted to treating burns, as described in application CA 2 500 961.
  • the second light source may present a dominant wavelength selected to lie in the range 380-1250 nm at a power adapted to treating wounds, as described in application CA 2 500 961.
  • the second light source may present a dominant wavelength selected to lie in any one of the ranges 380- 420 nm, 620-680 nm, and 760-830 nm at a power adapted to reducing scars, as described in application CA 2 500 961.
  • the second light source may present a dominant wavelength selected to lie in either of the ranges 630- 680 nm and 800-1000 nm, for action to treat inflammation of the skin, as described in application WO 2008/057640.
  • the second light source may present a dominant wavelength selected to lie in the range 530-600 nm, for action for treating rosacea or other red patches of the skin, as described in application WO 2008/057640.
  • Treating acne The radiation of the second light source may be continuous, with a dominant wavelength possibly lying in the range 410 nm to 420 nm, e.g. being centered around 415 nm, as described in US patent No. 6 887 260.
  • a device including both an LED emitting pulsed light at a dominant wavelength of 590 nm and a continuous lamp radiating at a dominant wavelength of 415 nm may be used, as described in US patent No. 6 887 260.
  • the light emitted by the second light source may be pulsed.
  • the pulses may have a pulse width of 800 milliseconds (ms) and they may be at a frequency of 1 hertz (Hz) .
  • the dominant wavelength may be about 400 nm and the power may be 2500 mW/cm 2 as described in applications WO 2007/092349 and US 2006/0200213.
  • Application CA 2 500 961 describes using a dominant wavelength selected to lie in the range 390-450 nm or 600-700 nm for treating acne.
  • the dominant wavelength of the second light source may be selected to lie in the range 300-1300 nm, at emitted power of less than 4 J/cm 2 for preventative action against acne, as described in application
  • the light emitted by the second light source may be continuous and may have a dominant wavelength selected to lie in any one of the ranges 400-490 nm, 560-600 nm, 600-
  • the light emitted by the second light source may be pulsed and may be a dominant wavelength selected to lie in the range 400-490 nm, 560-600 nm, 600-650 nm, or 790-
  • a dermatological composition may be applied in addition to the light treatment.
  • Figure 1 is an exploded perspective view showing an embodiment of a device in accordance with the invention
  • Figure 1 device and • Figures 3 and 4 show another embodiment of a device in accorance with the invention.
  • the treatment device 1 shown in Figure 1 comprises a housing 4 that houses a first light source 10 and a second light source 20, together with an electrical power supply and a circuit for controlling the sources.
  • a support 2 constituted by a transparent or translucent substrate in the example shown, is removably fastened to the housing 4 and has an outside face that is designed to come into contact with the skin, which face is covered in a layer or in particles of a photocatalytic material 3.
  • the support 2 is fastened in non-removable manner to the housing 4.
  • the first and second sources may comprise LEDs, distributed in such a manner as to illuminate the support 2 more or less uniformly.
  • the support is in the shape of a disk, but it could have some other shape.
  • the first source comprises LEDs that emit in the UV and the second source comprises LEDs that emit in the visible and/or the infrared, as a function of the treatment to be performed. All of the LEDs that emit at the same wavelength are considered as making up a single source.
  • the housing 4 includes switches (not shown) enabling the various sources to be switched on or off.
  • the device 1 is used by switching on the first source 10 and bringing the photocatalytic material into contact with the skin or the hair.
  • the device 1 may optionally be moved in contact with the keratinous material being treated. During this stage of use, impurities that are present in contact with the photocatalytic material are degraded photocatalytically .
  • the device 1 may also be used to perform phototherapeutic treatment by switching on the second source.
  • the radiation passes through the support 2 and reaches the keratinous materials.
  • various cosmetic actions may be exercised, as described in detail above .
  • the device 1 may comprise two mutually movable portions Ia and Ib, e.g. portions that are hinged together, that are configured to close at least in part on hair as shown in Figure 3.
  • Each of the faces of the device 1 that face the hair may include a photocatalytic material, and each of the two movable portions Ia and Ib of the device may include first and second sources serving respectively to emit radiation for activating photocatalysis and radiation for performing phototherapy.
  • the second radiation is to be emitted towards the scalp, e.g. in order to stimulate regrowth of hair, the device may be open as shown in Figure 4 so that the radiation having a cosmetic purpose can reach the scalp.
  • the organic degradation products may be removed from the support, e.g. with a tissue or a wipe, or by washing if the device is waterproof.
  • the degradation products present on the keratinous materials may be removed with a conventional cleansing material, e.g. a lotion for the skin or a shampoo for the hair.
  • a conventional cleansing material e.g. a lotion for the skin or a shampoo for the hair.
  • the device may be used together with application of a pharmaceutic or cosmetic composition on the zone for treatment.
  • the composition may be applied before, after, or during utilization of the device i the invention.
  • the invention is not limited to the examples described.
  • the cosmetic or therapeutic treatment may be performed with more than two sources emitting at different wavelengths.

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  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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  • Radiology & Medical Imaging (AREA)
  • Animal Behavior & Ethology (AREA)
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  • Veterinary Medicine (AREA)
  • Biophysics (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Radiation-Therapy Devices (AREA)

Abstract

L'invention porte sur un dispositif (1) de traitement de matières kératiniques humaines, en particulier la peau ou les cheveux, le dispositif comprenant : - un support (2) portant une matière photocatalytique et conçu de façon à venir en contact avec les matières kératiniques ; - une première source de lumière (10) conçue de façon à éclairer la matière photocatalytique afin de soumettre les impuretés présentes en contact avec ladite matière à une réaction photocatalytique ; et - une seconde source de lumière (20) différente de la première, et conçue de façon à émettre une lumière principalement dans une bande de ±100 nm autour d'au moins une longueur d'onde dominante, et ayant une action cosmétique ou thérapeutique sur les matières kératiniques traitées.
PCT/IB2010/050101 2009-01-12 2010-01-12 Dispositif de traitement de matières kératiniques humaines Ceased WO2010079463A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR0950122A FR2940915B1 (fr) 2009-01-12 2009-01-12 Dispositif de traitement des matieres keratiniques humaines
FR0950122 2009-01-12
US20202509P 2009-01-21 2009-01-21
US61/202,025 2009-01-21

Publications (1)

Publication Number Publication Date
WO2010079463A1 true WO2010079463A1 (fr) 2010-07-15

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PCT/IB2010/050101 Ceased WO2010079463A1 (fr) 2009-01-12 2010-01-12 Dispositif de traitement de matières kératiniques humaines

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FR (1) FR2940915B1 (fr)
WO (1) WO2010079463A1 (fr)

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ITBG20100065A1 (it) * 2010-12-15 2012-06-16 Mectronic Medicale S R L Dispositivo per il trattamento terapeutico ad emissione stocastica
WO2012157004A1 (fr) * 2011-05-18 2012-11-22 Rodolfo Pomar Appareil destiné à réaliser des traitements esthétiques
EP2959941A4 (fr) * 2013-02-22 2016-03-23 Panasonic Ip Man Co Ltd Dispositif esthétique de luminescence de poils corporels
CN111432877A (zh) * 2017-12-20 2020-07-17 公立大学法人名古屋市立大学 紫外线照射装置、紫外线照射装置中使用的配件及弹性构件、以及紫外线照射方法

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EP3603745B1 (fr) 2018-07-30 2021-12-22 bredent medical GmbH & Co. KG Appareil thérapeutique destiné à irradier une surface d'un tissu
WO2021151518A1 (fr) 2020-01-31 2021-08-05 Bredent Medical Gmbh & Co. Kg Dispositif thérapeutique pour irradier une surface de tissu

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ITBG20100065A1 (it) * 2010-12-15 2012-06-16 Mectronic Medicale S R L Dispositivo per il trattamento terapeutico ad emissione stocastica
WO2012157004A1 (fr) * 2011-05-18 2012-11-22 Rodolfo Pomar Appareil destiné à réaliser des traitements esthétiques
EP2959941A4 (fr) * 2013-02-22 2016-03-23 Panasonic Ip Man Co Ltd Dispositif esthétique de luminescence de poils corporels
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CN111432877A (zh) * 2017-12-20 2020-07-17 公立大学法人名古屋市立大学 紫外线照射装置、紫外线照射装置中使用的配件及弹性构件、以及紫外线照射方法
CN111432877B (zh) * 2017-12-20 2024-02-23 公立大学法人名古屋市立大学 紫外线治疗器、紫外线治疗器中使用的配件及弹性构件

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Publication number Publication date
FR2940915A1 (fr) 2010-07-16
FR2940915B1 (fr) 2013-07-05

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