EP2682020A2 - Peigne excité par ultrasons - Google Patents

Peigne excité par ultrasons Download PDF

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Publication number
EP2682020A2
EP2682020A2 EP13171288.7A EP13171288A EP2682020A2 EP 2682020 A2 EP2682020 A2 EP 2682020A2 EP 13171288 A EP13171288 A EP 13171288A EP 2682020 A2 EP2682020 A2 EP 2682020A2
Authority
EP
European Patent Office
Prior art keywords
comb
spine
teeth
comb body
hair
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.)
Withdrawn
Application number
EP13171288.7A
Other languages
German (de)
English (en)
Other versions
EP2682020A3 (fr
Inventor
Alexander Britva
Alexander Dverin
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.)
Alma Lasers Ltd
Original Assignee
Alma Lasers Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Alma Lasers Ltd filed Critical Alma Lasers Ltd
Publication of EP2682020A2 publication Critical patent/EP2682020A2/fr
Publication of EP2682020A3 publication Critical patent/EP2682020A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D24/00—Hair combs for care of the hair; Accessories therefor
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D24/00—Hair combs for care of the hair; Accessories therefor
    • A45D24/007—Hair combs for care of the hair; Accessories therefor power-driven
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D24/00—Hair combs for care of the hair; Accessories therefor
    • A45D24/22—Combs with dispensing devices for liquids, pastes or powders
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D2200/00—Details not otherwise provided for in A45D
    • A45D2200/20—Additional enhancing means
    • A45D2200/207—Vibration, e.g. ultrasound

Definitions

  • the present invention relates to a comb for hair or fibres that is coupled to an ultrasound generator.
  • the present invention seeks therefore to provide a comb that acts as a sonotrode of an ultrasonic transducer to apply the generated ultrasound energy effectively to the hair or fibres being treated.
  • a comb for hair or fibres comprising a rigid comb body having a spine extending along a longitudinal axis and a plurality of teeth projecting from the spine and extending transversely to the longitudinal axis, and at least one ultrasound generator connected to the spine, characterised in that the or each ultrasound generator comprises at least one ultrasonic transducer operative to apply compression waves to the spine in a direction transverse to the longitudinal axis of the spine so as to cause surface waves to propagate along the spine and the teeth of the comb body.
  • Ultrasonic vibrations can travel through a rigid sheet in a variety of modes that include both bulk waves (compression waves and shear waves) and surface waves, such as Rayleigh-Lamb waves.
  • prior art proposals relied on ultrasound propagating as bulk waves along the length of the spine to cause the teeth to vibrate in a manner similar to the prongs of a tuning fork
  • the present invention relies on the ultrasound energy propagating as surface waves along the teeth. As it is only the surface of the comb that comes into contact with the hair or fibres, the invention achieves more efficient coupling of the generated ultrasonic energy.
  • the ultrasound generator preferably comprises a plurality of transducers arranged with an equal number of transducers on each side of the spine, the spine being clamped between the ultrasonic transducers.
  • the comb body is made of metal and preferably serves as an electrical ground plane of the transducers.
  • the ultrasonic transducers are excited by an a.c. HF voltage of which the frequency is tuned to cause resonance of the ultrasonic vibrations travelling along the teeth of the comb body in at least one mode of propagation.
  • the excitation frequency may suitably be selected such that the length of the teeth is an integer multiple of one half of the wavelength of the ultrasonic vibrations induced in the comb body.
  • the length of the spine and the separation between the teeth of the comb body may be selected to be harmonically related to one half of the wavelength of the ultrasonic vibrations induced in the comb body.
  • the excitation frequency is selected such that resonance occurs in the ultrasonic vibrations that propagate as Lamb waves along the teeth of the comb body.
  • the invention further provides a hair or fibre treatment apparatus comprising an ultrasonically excited comb as set forth above combined or integrated with a dispenser for applying a hair treatment product to be worked into the hair by the teeth of the comb, the comb having a hollow spine and hollow teeth to allow the hair treatment product to flow from the dispenser to the hair or fibre being treated.
  • Figure 1 shows a comb body 10 made of a solid plate of aluminium or stainless steel, fashioned in the shape of a comb with a spine 12 and teeth 14.
  • the spine 12 is formed with holes 16, any one or more of which may be used to couple an ultrasound generator to the comb body 10.
  • the ultrasound generator 20 shown in Figure 2 comprises four ceramic piezoelectric transducers 22 having electrodes 26 and arranged as a stack with two transducers 22 on each side of the spine 12.
  • Two sound reflectors 24 are arranged at the opposite ends of the stack of transducers 22 and all the components of the generator 28 are clamped to one another and to the spine 12 by means of a bolt 28, fitted with two nuts.
  • the electrode 26 in electrical contact with the spine 12 and the two outer electrodes 26 of the stack of transducers 22 are connected to ground.
  • the electrodes 26 common to the two transducers in each of the two pairs arranged on the opposite sides of the spine 12 are commonly connected to an alternating voltage supply 32 by way of an inductor 30.
  • the four ceramic piezoelectric transducers 22 behave electrically as four capacitors connected in parallel between the inductor 30 and ground.
  • the parallel connected capacitances of the transducers 22, in conjunction with the inductor 30, form a series resonant circuit which maximises the a.c. HF voltage acting on the transducers 22 when the frequency of the voltage supply source matches the resonance frequency of the series resonant circuit.
  • Some or all of the dimensions of the comb body may be selected to enhance mechanical resonance of the comb at the excitation frequency of the transducers 22, to increase the amplitude of the acoustic waves propagating through the comb body.
  • the waves achieving the desired effect on the hair or fibres are surface waves.
  • Lamb waves are surface waves that travel through a body of finite thickness and the mode of propagation is explained with reference to Figure 3 .
  • the arrows 42 indicate the compression forces applied by the ultrasound generator 20 along its axis 40.
  • the region of the spine 12 placed under stress by the ultrasound generator 20 is designated 44 and the arrow 46 represents the direction of propagation of the surfaces waves along the teeth 14.
  • the particles near the surfaces of the comb body move with an elliptical motion and the height of the minor axis of the ellipses decreases with distance of the particles from the surface.
  • the wave envelope will travel from left to right, as viewed.
  • the vibrations travel along all surfaces of the teeth so that the wave motion shown in section in Figure 3 occurs both on the interstitial surfaces of the teeth (varying the gap between the teeth) and on their lateral surfaces.
  • the combined effect results in a form of barrel-type wave propagation (resembling peristaltic motion) along the length of the teeth.
  • the teeth and the spine may be hollow.
  • the spine 112 has an internal passageway 135 that communicates with further passageways 137 extending along the teeth 114.
  • An ultrasound generator 120 as described previously, is mounted on the spine 112, the end of which is coupled to a dispenser 150.
  • the passageways 135, 137 allow a liquid, such as a dye or a treatment solution, stored in the dispenser 150 to be applied to the hair as it is being combed.
  • the hollow teeth also serve to enhance the amplitude of vibration on the surface of the teeth.
  • the comb body may be heated by the ultrasonic energy and it is possible to reach thermal stability by controlling the ultrasound power.
  • the elevated temperature and increased ultrasonic efficiency improve dye penetration into hair shaft and improve dying of hair roots.
  • the comb also has application in control of lice and for this purpose the comb may be integrated with a dispenser of an active pharmaceutical agent, as shown in the embodiment of Figures 4 to 6 .
  • the comb dimensions facilitate ultrasound propagation with maximum of amplitude of acoustic surface waves (antinodes) at the tips of the teeth of the comb.
  • the resonance frequency may be selected to maximise mechanical vibration at other positions along the length of the teeth.
  • the present invention sets out to provide strong ultrasound wave coupling between the teeth side walls and the hairs. Such ultrasonic vibrations have been found in practice to facilitate passage of the comb through curly and tangled hairs and to assist in applying dyes and pharmaceutical compositions to the hair.
  • the working elements of the comb are the teeth, or more correctly gaps between the teeth. Therefore, it is desirable to provide teeth vibrations in the direction orthogonal to the hair. Antinodes, midway along the length of the teeth may lead to tooth oscillations and rotative motion that should facilitate a tangled hair combing.
  • the ultrasonic vibration of the comb results in heating, which assists in hair dying, as the colorant penetrates better into the hair.
  • cavitations can be caused in gels, creams or liquids used for hair dying or parasite control. Such cavitations may be a powerful factor in improving these processes.
  • the comb body in an embodiment of the invention is made of metal. Stainless steel is preferred for use with active chemical ingredients, and aluminium for massaging and skin processing combs.
  • the comb body may also be made of other rigid material, including plastic or ceramic.
  • the teeth may be solid or hollow. A hollow tooth may have an additional improvement (increased amplitude) of cross-sectional vibration in the plane orthogonal to the tooth axis.
  • the preferred length of the teeth is n*lambda/2, lambda being the wavelength.
  • lambda being the wavelength.
  • the wavelength is equal to 13 mm in stainless steel or 14 mm in aluminium. Therefore the preferred tooth lengths are 7, 14, 21 and 28 mm (in the case of aluminium); the distances between transducer axis line and tooth 12 root may be resonant (lambda* ⁇ /2).
  • the width L1 of the comb may be resonant also.
  • the ultrasound excited comb operates as follows:
  • a high frequency (HF) power source excites the ultrasound transducers in the regular manner.
  • a switching module (not shown) forms rectangular pulses, which are coupled to the transducer through resonant inductor 30, which acts as an autotransformer to increase HF-voltage.
  • the inductor 30 in series with the intrinsic capacitance of the transducers 22 for an HF resonator.
  • the HF-voltage in this resonator is a sine-wave.
  • Sweeping (or modulation) of the excitation frequency can be applied for compensation of thermal deviation of resonant frequency.
  • the range of frequency sweep may be +/- 2 to 7% over the operating frequency.
  • the spine has been shown as being flat and in the same plane as the teeth, it is alternatively possible to the comb body to be in the form of a rake with spine having a first section in the plane of the teeth and a section, serving as a handle, lying in a plane inclined relative to the plane of the teeth.
  • the ultrasonically excited comb described above which has as acting factors ultrasound, mechanical vibration, cavitation (if liquid medium is present) and ultrasonically generated heat, offers the following advantages:

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  • Percussion Or Vibration Massage (AREA)
EP13171288.7A 2012-07-05 2013-06-10 Peigne excité par ultrasons Withdrawn EP2682020A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1212000.2A GB2497613B (en) 2012-07-05 2012-07-05 Ultrasonically excited comb

Publications (2)

Publication Number Publication Date
EP2682020A2 true EP2682020A2 (fr) 2014-01-08
EP2682020A3 EP2682020A3 (fr) 2014-10-01

Family

ID=46766212

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13171288.7A Withdrawn EP2682020A3 (fr) 2012-07-05 2013-06-10 Peigne excité par ultrasons

Country Status (3)

Country Link
US (1) US20140007895A1 (fr)
EP (1) EP2682020A3 (fr)
GB (1) GB2497613B (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102143724B (zh) 2008-08-07 2015-02-25 通用医疗公司 用于皮肤病学色素减退的方法和装置
CN104334128B (zh) 2011-11-16 2017-12-05 通用医疗公司 用于低温处理皮肤组织的方法和装置
KR102087894B1 (ko) 2011-11-16 2020-03-12 더 제너럴 하스피탈 코포레이션 피부 조직의 극저온 처리를 위한 방법 및 장치
CN108135644A (zh) 2015-09-04 2018-06-08 R2皮肤科有限公司 用于色素减退冷却处理的医学系统、方法和设备
EP3400027A4 (fr) * 2016-01-06 2019-11-06 Parasonic Ltd. Dispositif et procédé pour lutter contre des parasites par réflexion ultrasonore
US11266524B2 (en) 2016-06-03 2022-03-08 R2 Technologies, Inc. Medical methods and systems for skin treatment
IL251002B (en) * 2017-03-07 2022-07-01 Esicovich Arik A device for treating lice infestation
KR20200024241A (ko) 2017-06-30 2020-03-06 알2 더마톨로지, 인크. 노즐들의 선형 어레이를 갖는 피부 과학적 냉동 스프레이 디바이스들 및 사용 방법들
US11278099B2 (en) 2017-09-29 2022-03-22 L'oreal Formula delivery appliance
US11291284B2 (en) 2017-09-29 2022-04-05 L'oreal Formula delivery head
EP3897996A4 (fr) 2018-12-21 2022-10-19 R2 Technologies, Inc. Systèmes de commande et de positionnement automatiques pour dispositifs de cryopulvérisation dermatologiques
WO2020132609A1 (fr) 2018-12-21 2020-06-25 R2 Technologies, Inc. Système de planification de traitement de cryopulvérisation dermatologique automatisé
US20220160576A1 (en) * 2020-11-23 2022-05-26 L'oreal Portable hair and scalp treatment device with conductive bristles
EP4280986A4 (fr) 2021-01-20 2024-12-25 R2 Technologies, Inc. Traitements et systèmes dermatologiques utilisant le refroidissement, les topiques et/ou l'abrasion
CN113559424A (zh) * 2021-07-16 2021-10-29 复旦大学 空耦超声毛发理疗装置及方法
FR3135603B1 (fr) * 2022-05-18 2025-10-31 Oreal Dispositif de traitement des cheveux et procédé

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3393686A (en) * 1965-08-09 1968-07-23 Engineering & Dev Company Of C Ultrasonic method for treating natural and synthetic fibers
US5334960A (en) * 1993-02-16 1994-08-02 Motorola, Inc. Conjugately matched acoustic wave transducers and method
US5297512A (en) * 1993-05-13 1994-03-29 Okanagan House Inc. Vibrating and ultrasonic sound emitting grooming device apparatus and method
US5785064A (en) * 1997-03-07 1998-07-28 Simpson; Timothy A. High temperature externally heated hair-styling devices
JP3967439B2 (ja) * 1997-11-27 2007-08-29 ホーユー株式会社 毛髪化粧用具
JP2001120335A (ja) * 1999-10-22 2001-05-08 Fuairudo Kk ストレートパーマネントセット方法及びこれに使用する超音波コーミング装置
US20020096125A1 (en) * 2000-08-08 2002-07-25 Lentek International, Inc. Hair grooming device having ionizer and an ultrasonic wave generator
US6575173B2 (en) * 2001-08-31 2003-06-10 The Procter & Gamble Company Ultrasonic device for the treatment of hair and other fibers
US6732744B2 (en) * 2001-12-07 2004-05-11 The Procter & Gamble Company Method for the ultrasonic treatment of hair and other keratinous fibers
US20030217438A1 (en) * 2002-05-22 2003-11-27 The Procter & Gamble Company Ultrasonic device for the treatment of hair and other fibers
JP4418874B2 (ja) * 2003-06-26 2010-02-24 本多電子株式会社 ペット用超音波くし
US9028748B2 (en) * 2006-02-24 2015-05-12 Nanovibronix Inc System and method for surface acoustic wave treatment of medical devices
EP2291168A2 (fr) * 2008-05-30 2011-03-09 L'Oréal Procedes et kits de traitement des cheveux
US20110184499A1 (en) * 2010-01-27 2011-07-28 Robert Radi Skin treatment device and system
US8936607B2 (en) * 2010-04-30 2015-01-20 Liosonic Ltd. Method and system for hair removal
EP2677893B1 (fr) * 2011-02-25 2020-12-09 Parasonic Ltd. Système et procédé d'endommagement de parasites

Also Published As

Publication number Publication date
GB201212000D0 (en) 2012-08-22
GB2497613A (en) 2013-06-19
EP2682020A3 (fr) 2014-10-01
US20140007895A1 (en) 2014-01-09
GB2497613B (en) 2013-11-20

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