EP3643196A1 - Hair styling using dielectric heating - Google Patents
Hair styling using dielectric heating Download PDFInfo
- Publication number
- EP3643196A1 EP3643196A1 EP18202589.0A EP18202589A EP3643196A1 EP 3643196 A1 EP3643196 A1 EP 3643196A1 EP 18202589 A EP18202589 A EP 18202589A EP 3643196 A1 EP3643196 A1 EP 3643196A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hair
- mhz
- radio
- temperature
- heating
- 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- Withdrawn
Links
- 210000004209 hair Anatomy 0.000 title claims abstract description 41
- 238000010438 heat treatment Methods 0.000 title claims abstract description 18
- 230000000694 effects Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000001419 dependent effect Effects 0.000 description 4
- 206010019049 Hair texture abnormal Diseases 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
Images
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
- A45D1/00—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor
- A45D1/02—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with means for internal heating, e.g. by liquid fuel
- A45D1/04—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with means for internal heating, e.g. by liquid fuel by electricity
-
- 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
- A45D1/00—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor
- A45D1/06—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with two or more jaws
-
- 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
- A45D1/00—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor
- A45D1/28—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with means for controlling or indicating the temperature
-
- 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
- A45D2/00—Hair-curling or hair-waving appliances ; Appliances for hair dressing treatment not otherwise provided for
- A45D2/001—Hair straightening appliances
-
- 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
- A45D19/00—Devices for washing the hair or the scalp; Similar devices for colouring the hair
- A45D19/16—Surface treatment of hair by steam, oil, or the like
-
- 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
- A45D20/00—Hair drying devices; 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
- A45D1/00—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor
- A45D2001/002—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
- A45D2200/00—Details not otherwise provided for in A45D
- A45D2200/20—Additional enhancing means
-
- 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
- A45D2200/205—Radiation, e.g. UV, infrared
-
- 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
- A45D7/00—Processes of waving, straightening or curling hair
Definitions
- the invention relates to a hair styling device using dielectric heating.
- US 2017/0360174 discloses an apparatus that manipulates the shape of hair using dielectric heating.
- the apparatus includes opposing first and second electrodes respectively provided on first and second arms that are movable towards and away from one another.
- Drive circuitry supplies electrical energy to the first and second electrodes, to cause an alternating electric field to be produced in the vicinity of the electrodes in use, and thereby cause dielectric heating of hair placed between the electrodes in use.
- Sensing circuitry senses a change in coupling of energy from the alternating electric field to the hair during heating of the hair.
- Control circuitry controls the drive circuitry to vary the electrical energy supplied to the first and second electrodes in dependence upon the sensed change in coupling.
- the range of frequencies is preferably from around 1 MHz to around 100 MHz. More preferably the range of frequencies is from around 10 MHz to around 100 MHz. Even more preferably the range of frequencies is from around 20 MHz to around 40 MHz, these frequencies being well suited for consumer products since they have limited wave propagation (unlike microwaves) and hence do not present a risk to health or undesirable EMC (electromagnetic compatibility) effects.
- a voltage of around 50 V AC is used.
- Embodiments of the invention are based on the recognition that in the frequency range of below 40 MHz, as preferred by the prior art US 2017/0360174 , the loss tangent and heat generation significantly depend on the moisture content. So, with frequencies below 40 MHz, as preferred by the prior art, the power levels need to be adapted depending on the water content of the hair. Moreover, since the water content changes significantly during the styling process, heat control requires real-time accurate monitoring of water content to provide optimal heating effects, to prevent undesirable over-heating effects and poor efficacy due to under-treatment from occurring. In that sense, it is desirable to have a method that is less dependent on the water content and which requires less critical sensing and control of treatment parameters.
- this can be achieved by using frequencies in the range from 50 MHz to 90 MHz which will make the treatment less dependent on water content and at the same provides about the same efficacy as around 1 MHz for dry hairs.
- a voltage of the radio-frequent signal does not exceed 30 V, while a voltage not exceeding 10 V would work well in a configuration that applies another heat source for heating hair up till a first temperature that is no more than 150 °C (and thus lower than a critical temperature at which hair cuticle damage will occur), and radio-frequent electrodes for - in combination with heat from the other heat source - selectively heating a hair cortex to a second temperature exceeding the first temperature and sufficiently high for hair styling.
- Fig. 1 shows a graph of loss tangent vs. frequency, for wet hair W and dry hair D, respectively.
- the graph shows a relatively large difference in loss tangent between wet hair W and dry hair W for frequencies below 40 MHz, while the difference is much smaller for higher frequencies above 50 MHz, so that at such higher frequencies, it is not necessary to accurately and constantly measure the moisture content of the hair while styling it. While the graph shows that the same advantage also occurs at frequencies higher than 90 MHz, an efficacy of the RF heating is less at frequencies exceeding 90 MHz.
- Fig. 2 shows an embodiment of a hair styling device 100 in accordance with the present invention, similar to our previous application WO 2017/080957 (attorneys' docket 2015PF01581), with the difference that in the embodiment of Fig. 2 , radio-frequency (RF) heating is used instead of light.
- the hair styling device 100 comprises two jaws 101 which are hinged to pinch strands of hairs.
- Each jaw 101 comprises an array of RF electrodes or large area electrodes 102, which will selectively heat the hair cortex to a temperature of about 170 °C required for styling. This temperature can be controlled to prevent other non-desirable heating effects such as melting and vaporization expected at 250 °C and 1200 °C respectively.
- Each jaw 101 comprises optionally another heat source 103 which may directly or indirectly pre-heat the hairs to a first temperature of no more than 150°, preferably no more than 140 °C, e.g. 120 °C, to enhance the dielectric properties of the hair.
- the combined heating effect from the other heat source 103 and the RF electrodes 102 will lead to the temperature of about 170 °C required for styling.
- Additional hair conductivity sensing controls 104 can be used to measure hair dielectric properties and optimize the treatment by adjusting the power.
- Additional heat control systems 105 can be used to regulate the temperature settings and treatment time. To straighten/style the hairs, the strands of hairs are inserted between the plates and are moved until the hair is styled.
- a voltage below 10 V is suitable for use with high frequencies in the range between 50 MHz and 90 MHz in the embodiment of Fig. 2 .
Abstract
In a hair styling device (100) comprising electrodes (102) for applying a radio-frequent signal to hair, a frequency of the radio-frequent signal is between 50 MHz and 90 MHz. Preferably, a voltage of the radio-frequent signal does not exceed 30 V, while a voltage not exceeding 10 V would work well in a configuration that applies another heat source (103) for heating hair up till a first temperature that is no more than 150 °C (and thus lower than a critical temperature at which hair cuticle damage will occur), and the radio-frequent electrodes (102) for - in combination with heat from the other heat source (103) - selectively heating a hair cortex to a second temperature exceeding the first temperature and sufficiently high for hair styling.
Description
- The invention relates to a hair styling device using dielectric heating.
-
US 2017/0360174 discloses an apparatus that manipulates the shape of hair using dielectric heating. Typically, the apparatus includes opposing first and second electrodes respectively provided on first and second arms that are movable towards and away from one another. Drive circuitry supplies electrical energy to the first and second electrodes, to cause an alternating electric field to be produced in the vicinity of the electrodes in use, and thereby cause dielectric heating of hair placed between the electrodes in use. Sensing circuitry senses a change in coupling of energy from the alternating electric field to the hair during heating of the hair. Control circuitry controls the drive circuitry to vary the electrical energy supplied to the first and second electrodes in dependence upon the sensed change in coupling. - The range of frequencies is preferably from around 1 MHz to around 100 MHz. More preferably the range of frequencies is from around 10 MHz to around 100 MHz. Even more preferably the range of frequencies is from around 20 MHz to around 40 MHz, these frequencies being well suited for consumer products since they have limited wave propagation (unlike microwaves) and hence do not present a risk to health or undesirable EMC (electromagnetic compatibility) effects. A voltage of around 50 V AC is used.
- It is, inter alia, an object of the invention to provide an improved hair styling device using dielectric heating. The invention is defined by the independent claim. Advantageous embodiments are defined in the dependent claims.
- Embodiments of the invention are based on the recognition that in the frequency range of below 40 MHz, as preferred by the prior art
US 2017/0360174 , the loss tangent and heat generation significantly depend on the moisture content. So, with frequencies below 40 MHz, as preferred by the prior art, the power levels need to be adapted depending on the water content of the hair. Moreover, since the water content changes significantly during the styling process, heat control requires real-time accurate monitoring of water content to provide optimal heating effects, to prevent undesirable over-heating effects and poor efficacy due to under-treatment from occurring. In that sense, it is desirable to have a method that is less dependent on the water content and which requires less critical sensing and control of treatment parameters. In accordance with an aspect of the invention, this can be achieved by using frequencies in the range from 50 MHz to 90 MHz which will make the treatment less dependent on water content and at the same provides about the same efficacy as around 1 MHz for dry hairs. Preferably, a voltage of the radio-frequent signal does not exceed 30 V, while a voltage not exceeding 10 V would work well in a configuration that applies another heat source for heating hair up till a first temperature that is no more than 150 °C (and thus lower than a critical temperature at which hair cuticle damage will occur), and radio-frequent electrodes for - in combination with heat from the other heat source - selectively heating a hair cortex to a second temperature exceeding the first temperature and sufficiently high for hair styling. - These and other aspects of the invention will be apparent from and elucidated with reference to the embodiments described hereinafter.
-
-
Fig. 1 shows a graph of loss tangent vs. frequency; and -
Fig. 2 shows an embodiment of a hair styling device in accordance with the present invention. -
Fig. 1 shows a graph of loss tangent vs. frequency, for wet hair W and dry hair D, respectively. The graph shows a relatively large difference in loss tangent between wet hair W and dry hair W for frequencies below 40 MHz, while the difference is much smaller for higher frequencies above 50 MHz, so that at such higher frequencies, it is not necessary to accurately and constantly measure the moisture content of the hair while styling it. While the graph shows that the same advantage also occurs at frequencies higher than 90 MHz, an efficacy of the RF heating is less at frequencies exceeding 90 MHz. -
Fig. 2 shows an embodiment of ahair styling device 100 in accordance with the present invention, similar to our previous applicationWO 2017/080957 (attorneys' docket 2015PF01581), with the difference that in the embodiment ofFig. 2 , radio-frequency (RF) heating is used instead of light. Thehair styling device 100 comprises twojaws 101 which are hinged to pinch strands of hairs. Eachjaw 101 comprises an array of RF electrodes orlarge area electrodes 102, which will selectively heat the hair cortex to a temperature of about 170 °C required for styling. This temperature can be controlled to prevent other non-desirable heating effects such as melting and vaporization expected at 250 °C and 1200 °C respectively. - Each
jaw 101 comprises optionally anotherheat source 103 which may directly or indirectly pre-heat the hairs to a first temperature of no more than 150°, preferably no more than 140 °C, e.g. 120 °C, to enhance the dielectric properties of the hair. The combined heating effect from theother heat source 103 and theRF electrodes 102 will lead to the temperature of about 170 °C required for styling. - Additional hair
conductivity sensing controls 104 can be used to measure hair dielectric properties and optimize the treatment by adjusting the power. Additionalheat control systems 105 can be used to regulate the temperature settings and treatment time. To straighten/style the hairs, the strands of hairs are inserted between the plates and are moved until the hair is styled. - Contact resistive RF heating is preferred over non-contact capacitive RF heating for a consumer proposition because of the high voltage and power or longer cutting time required for the latter one. A voltage below 10 V is suitable for use with high frequencies in the range between 50 MHz and 90 MHz in the embodiment of
Fig. 2 . - It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims. For example, while the embodiment shown in
Fig. 2 is a hair straightener, the invention can alternatively be used for hair curling. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps other than those listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and/or by means of a suitably programmed processor. In the device claim enumerating several means, several of these means may be embodied by one and the same item of hardware. Measures recited in mutually different dependent claims may advantageously be used in combination.
Claims (3)
- A hair styling device (100) comprising
electrodes (102) for applying a radio-frequent signal to hair, characterized in that a frequency of the radio-frequent signal is between 50 MHz and 90 MHz. - A hair styling device (100) as claimed in claim 1, wherein a voltage of the radio-frequent signal does not exceed 30 V.
- A hair styling device (100) as claimed in claim 2, wherein the hair styling device (100) further comprises another heat source (103) for heating hair up till a first temperature that is no more than 150 °C, and wherein a voltage of the radio-frequent signal does not exceed 10 V.
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP18202589.0A EP3643196A1 (en) | 2018-10-25 | 2018-10-25 | Hair styling using dielectric heating |
BR112021007519-4A BR112021007519A2 (en) | 2018-10-25 | 2019-10-15 | styling device |
CN201980069989.2A CN112911963B (en) | 2018-10-25 | 2019-10-15 | Hair styling using dielectric heating |
JP2021520378A JP7066059B6 (en) | 2018-10-25 | 2019-10-15 | Hair styling using dielectric heating |
PCT/EP2019/077840 WO2020083698A1 (en) | 2018-10-25 | 2019-10-15 | Hair styling using dielectric heating |
KR1020217015615A KR102660110B1 (en) | 2018-10-25 | 2019-10-15 | Hair styling using dielectric heating |
PL19783566T PL3869994T3 (en) | 2018-10-25 | 2019-10-15 | Hair styling using dielectric heating |
EP19783566.3A EP3869994B1 (en) | 2018-10-25 | 2019-10-15 | Hair styling using dielectric heating |
US17/279,112 US20210393012A1 (en) | 2018-10-25 | 2019-10-26 | Hair styling using dielectric heating |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP18202589.0A EP3643196A1 (en) | 2018-10-25 | 2018-10-25 | Hair styling using dielectric heating |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3643196A1 true EP3643196A1 (en) | 2020-04-29 |
Family
ID=63998599
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18202589.0A Withdrawn EP3643196A1 (en) | 2018-10-25 | 2018-10-25 | Hair styling using dielectric heating |
EP19783566.3A Active EP3869994B1 (en) | 2018-10-25 | 2019-10-15 | Hair styling using dielectric heating |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19783566.3A Active EP3869994B1 (en) | 2018-10-25 | 2019-10-15 | Hair styling using dielectric heating |
Country Status (6)
Country | Link |
---|---|
US (1) | US20210393012A1 (en) |
EP (2) | EP3643196A1 (en) |
JP (1) | JP7066059B6 (en) |
BR (1) | BR112021007519A2 (en) |
PL (1) | PL3869994T3 (en) |
WO (1) | WO2020083698A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202004003592U1 (en) * | 2004-03-09 | 2005-07-14 | Wik Far East Ltd. | Electrical hair setting e.g. curling, device e.g. air curler, has ionization equipment producing ions that are released from end of electrode, placed inside inflow channel and led to hair that is to be treated |
US20080110871A1 (en) * | 2006-11-09 | 2008-05-15 | Shenghong Wu | Thick film heater structure of the electric hair curler |
WO2016102972A2 (en) * | 2014-12-23 | 2016-06-30 | Jemella Limited | Method and apparatus for manipulating the shape of hair |
WO2017080957A1 (en) | 2015-11-10 | 2017-05-18 | Koninklijke Philips N.V. | Hair care device |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3760148A (en) * | 1971-12-20 | 1973-09-18 | Oreal | Apparatus for treating hair utilizing dielectric losses |
JPS5628526B2 (en) * | 1972-03-29 | 1981-07-02 | ||
LU70345A1 (en) * | 1974-06-18 | 1976-05-31 | ||
US5325600A (en) * | 1992-04-06 | 1994-07-05 | Micro Dry, Inc. | Method and apparatus for the prevention of scorching of fabric subjected to microwave heating |
US7586066B2 (en) | 2004-11-22 | 2009-09-08 | Chris Baldwin Bell | Hair styling device and method |
KR200408910Y1 (en) * | 2005-12-07 | 2006-02-14 | 홍진표 | wireless hair styler |
FR2959917B1 (en) | 2010-05-11 | 2012-07-27 | Oreal | HAIR PROCESSING PROCESS |
US9138038B2 (en) * | 2011-05-20 | 2015-09-22 | Spectrum Brands, Inc. | Hair styling apparatus having hair-protection function |
GB2500733B (en) * | 2012-06-25 | 2014-05-21 | Jemella Ltd | Hair styling appliance |
GB2569647B (en) * | 2017-12-22 | 2023-07-19 | Jemella Ltd | Method of dyeing hair fibres and kits and appliances for use in the same |
-
2018
- 2018-10-25 EP EP18202589.0A patent/EP3643196A1/en not_active Withdrawn
-
2019
- 2019-10-15 JP JP2021520378A patent/JP7066059B6/en active Active
- 2019-10-15 WO PCT/EP2019/077840 patent/WO2020083698A1/en unknown
- 2019-10-15 BR BR112021007519-4A patent/BR112021007519A2/en unknown
- 2019-10-15 PL PL19783566T patent/PL3869994T3/en unknown
- 2019-10-15 EP EP19783566.3A patent/EP3869994B1/en active Active
- 2019-10-26 US US17/279,112 patent/US20210393012A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202004003592U1 (en) * | 2004-03-09 | 2005-07-14 | Wik Far East Ltd. | Electrical hair setting e.g. curling, device e.g. air curler, has ionization equipment producing ions that are released from end of electrode, placed inside inflow channel and led to hair that is to be treated |
US20080110871A1 (en) * | 2006-11-09 | 2008-05-15 | Shenghong Wu | Thick film heater structure of the electric hair curler |
WO2016102972A2 (en) * | 2014-12-23 | 2016-06-30 | Jemella Limited | Method and apparatus for manipulating the shape of hair |
US20170360174A1 (en) | 2014-12-23 | 2017-12-21 | Timothy David Moore | Method and apparatus for manipulating the shape of hair |
WO2017080957A1 (en) | 2015-11-10 | 2017-05-18 | Koninklijke Philips N.V. | Hair care device |
Also Published As
Publication number | Publication date |
---|---|
JP7066059B6 (en) | 2022-06-07 |
EP3869994B1 (en) | 2022-03-09 |
EP3869994A1 (en) | 2021-09-01 |
US20210393012A1 (en) | 2021-12-23 |
BR112021007519A2 (en) | 2021-07-27 |
PL3869994T3 (en) | 2022-06-20 |
WO2020083698A1 (en) | 2020-04-30 |
JP7066059B2 (en) | 2022-05-12 |
CN112911963A (en) | 2021-06-04 |
JP2021529077A (en) | 2021-10-28 |
KR20210079356A (en) | 2021-06-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20200297091A1 (en) | Method and apparatus for manipulating the shape of hair | |
US6939344B2 (en) | Method for controlling skin temperature during thermal treatment | |
EP3416521B1 (en) | Ultrasound hair drying and styling | |
JP4338631B2 (en) | Device for hardening body tissue by electrosurgery (thermal scrosis) | |
US10092349B2 (en) | Variable-frequency stimulator for electrosurgery | |
JP2018509264A (en) | Non-invasive skin treatment device using RF current with treatment setting determiner | |
JP2019521815A5 (en) | ||
US20230123145A1 (en) | Treatment apparatus using rf energy, control method thereof, and treatment method using the same | |
US10463130B2 (en) | Hair styling device | |
EP3869994B1 (en) | Hair styling using dielectric heating | |
CN108348056A (en) | Hair nursing equipment | |
KR102660110B1 (en) | Hair styling using dielectric heating | |
CN112911963B (en) | Hair styling using dielectric heating | |
CN109496142B (en) | Electrosurgical system and electrosurgical generator for treating tissue | |
RU2776747C1 (en) | Hair styling using dielectric heating | |
US2177837A (en) | Temperature measuring device | |
US6269271B1 (en) | Method and apparatus for skin brown spot removal | |
CN114618083A (en) | Novel adaptive radio frequency variable subcutaneous tissue radiation volume control method | |
US20160074115A1 (en) | Microwave providing device and microwave surgical device provided with same | |
Wagenpfeil et al. | Optimized generator modes for bipolar vessel sealing | |
CN112135575A (en) | Medical device, remaining heat determination method, and remaining heat determination program | |
JP2003093132A (en) | Hair iron | |
WO2020095388A1 (en) | Medical device, control method, and control program | |
US8721635B2 (en) | Bipolar chondroplasty device | |
CN113543738A (en) | Ceramic applicator for transcutaneous energy delivery |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20201030 |