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WO2022022887A1 - Méthode de traitement de la peau par radiofréquence - Google Patents

Méthode de traitement de la peau par radiofréquence Download PDF

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Publication number
WO2022022887A1
WO2022022887A1 PCT/EP2021/066188 EP2021066188W WO2022022887A1 WO 2022022887 A1 WO2022022887 A1 WO 2022022887A1 EP 2021066188 W EP2021066188 W EP 2021066188W WO 2022022887 A1 WO2022022887 A1 WO 2022022887A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrodes
skin
pair
electrode
dermis
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/EP2021/066188
Other languages
German (de)
English (en)
Inventor
Matthew Prokop
Ralf Hagens
Thomas SCHORNSTEIN
Sören JASPERS
Martin Sattler
Daniel Philip MCGRAW
Isobel Jane ASHBEY
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.)
Beiersdorf AG
Original Assignee
Beiersdorf AG
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 Beiersdorf AG filed Critical Beiersdorf AG
Publication of WO2022022887A1 publication Critical patent/WO2022022887A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • 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
    • A61B2018/00005—Cooling or heating of the probe or tissue immediately surrounding the probe
    • 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
    • A61B2018/00458—Deeper parts of the skin, e.g. treatment of vascular disorders or port wine stains
    • 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
    • A61B2018/00458—Deeper parts of the skin, e.g. treatment of vascular disorders or port wine stains
    • A61B2018/00464—Subcutaneous fat, e.g. liposuction, lipolysis
    • 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
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B2018/1467—Probes or electrodes therefor using more than two electrodes on a single probe

Definitions

  • the present invention relates to a skin care device using high frequency waves.
  • a skin care device using high frequency waves comprising: a main body that can be held by a user; a head disposed on one side of the main body, including an electrode unit for applying a high-frequency current to a user's skin and being adapted to come into contact with the user's skin; and a drive unit for generating a high-frequency current and for supplying it to the electrode unit, wherein: the electrode unit comprises a first pair of electrodes and a second pair of electrodes which are arranged symmetrically, the pairs of electrodes being arranged crosswise, wherein the high-frequency pulses introduced into the skin become one lead to warming of the dermis.
  • a device is known from US Pat. No. 9,844,682 B2 which, by means of six electrodes arranged in a row, causes the skin to be heated by specific pulse sequences.
  • US Pat. No. 9,827,437 B2 describes a device for skin treatment with high-frequency waves, which introduces the high-frequency current into the skin by means of concentrically arranged ring-shaped electrodes. Here, too, no deep-lying areas of the skin can be heated.
  • HSP heat shock proteins
  • the invention therefore relates to an improved device for delivering radio frequencies into the skin, particularly into the dermis, the device comprising: a main body which can be held by a user; a head disposed on one side of the main body, the head having an electrode unit for applying a high-frequency current to a user's skin, the head being adapted to come into contact with the user's skin; and a drive unit for generating a high-frequency current and for supplying it to the electrode unit, characterized in that the electrode unit comprises a first pair of electrodes A and a second pair of electrodes B, wherein the pairs of electrodes A and B themselves can be constructed from two or more individual electrodes, the two or more individual electrodes are arranged linearly and symmetrically to one another, with the electrode pairs A and B being arranged perpendicularly (crosswise), with the intersection of the linearly arranged electrode pair A and the linearly arranged electrode pair B being in the middle of the respective electrode pair A and B and wherein the radiofrequency pulses introduced into the skin via the electrode pairs
  • FIG. 1 shows a schematic representation of an inventive device.
  • the main body 1 is formed into a disk-shaped head 2 at one end.
  • the head 2 carries on its surface 3 the pairs of electrodes A and B, each of which consists of six individual electrodes 4A1 to 4A6 and 4B1 to 4B6 arranged linearly with respect to one another.
  • the individual electrodes 4A1 to 4A6 and 4B1 to 4B6 are each driven individually with high-frequency pulses via the drive unit 5, the drive unit being arranged inside the main body.
  • the energy required for operation can be provided by accumulators or batteries or via a connection to an external voltage/current source (not shown).
  • the individual electrodes are advantageously controlled in such a way that only two opposite individual electrodes from the electrode pair A and two opposite individual electrodes from the electrode pair B are alternately supplied with a high-frequency voltage.
  • the actuation takes place in such a way that the pulse sequence of the electrode pair A and/or B does not in each case have a direct repetition in the actuated individual electrodes.
  • the control sequence for a device with 6 individual electrodes per pair of electrodes A and B is shown schematically in FIG.
  • Two electrodes from groups A and B are always activated at the same time (e.g. electrodes A1 and A4) and then a pair from the second electrode group (e.g. electrodes B1 and B4). This activation corresponds to so-called time multiplexing.
  • FIG. 3 shows a control sequence for a device with 6 individual electrodes per pair of electrodes A and B, in which two individual electrodes of the pair of electrodes A and B are controlled simultaneously. (e.g. electrodes A1 and A4 together with electrodes B1 and B4)
  • the frequency for the control is between 10 Hz and 10 kHz.
  • the radio frequency applied to the electrodes is between 1 and 6 MHz. It is advantageous if opposite electrodes are driven with a phase shift of 90°.
  • each set of electrodes in a square configuration are active at any time, with the voltage on a single opposing pair of electrodes 90 degrees out of phase with pair B, which is perpendicular to A. Due to the phase shift of the pairs of electrodes A and B, there is no local overheating of the dermis and epidermis in the corner points (FIG. 8 and FIG. 6 and FIG. 7 in connection with Table 1).
  • the device sequentially cycles through several sets of electrodes, with the frequency of switching between sets being nominally 10 Hz. However, the electronics can be configured up to 10 kHz. Thus, in the nominal configuration, each set of electrodes is active for a time of 100 ms between switching.
  • a very flat heat zone in the skin can be achieved through the alternating pairwise activation.
  • a flat thermal zone is understood to mean a zone extending across all electrodes with a higher temperature than the surrounding areas, the flat thermal zone being larger in terms of area but not deeper or insignificantly deeper than the thermal zone that occurs when only one is activated Electrode pair arises.
  • FIG. 4 schematically shows the formation of the heat zones X with sequential activation of the individual electrodes.
  • each electrode is only used (driven) 1/3 of the time, while the middle piece of the dermis in Figure 4) is heated all the time. This improves the utility by 5 dB.
  • Devices according to the invention generate a temperature increase of up to 5 K at a depth of 1 mm in the skin.
  • the dermis is the conductive layer where electricity finds the path of least resistance.
  • the epidermis has a higher heat capacity than the dermis. This means that a higher energy input into the epidermis is required to heat it up than the energy required to heat up the dermis.
  • the inventive method aims at heating the dermis, in which the healing cascade triggered by the heating produces an anti-aging effect, in particular skin tightening and a reduction in the appearance of wrinkles.
  • the thermal and electrical properties of the dermis are used in a targeted manner.
  • the cooling is advantageously carried out by a Peltier element which is arranged on the back of the electrodes and which is in thermally conductive contact with the electrodes.
  • Figure 8 shows thermal camera surface images taken immediately after the device was removed.
  • the temperature of the epidermis is 6 Kelvin (K) lower.
  • Table 1 shows the temperature profile (in degrees Celsius) measured in the dermis
  • the position of the temperature measurement point can be seen in FIG. 6 for channel 1 (channel 1) and in FIG. 7 for channel 2 (channel 2).

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Otolaryngology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Plasma & Fusion (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Electrotherapy Devices (AREA)

Abstract

L'invention concerne une méthode améliorée d'injection de chaleur dans la peau, et notamment dans le derme.
PCT/EP2021/066188 2020-07-29 2021-06-16 Méthode de traitement de la peau par radiofréquence Ceased WO2022022887A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020209532.9A DE102020209532A1 (de) 2020-07-29 2020-07-29 Verfahren zur Radiofrequenzbehandlung der Haut
DE102020209532.9 2020-07-29

Publications (1)

Publication Number Publication Date
WO2022022887A1 true WO2022022887A1 (fr) 2022-02-03

Family

ID=76532204

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2021/066188 Ceased WO2022022887A1 (fr) 2020-07-29 2021-06-16 Méthode de traitement de la peau par radiofréquence

Country Status (2)

Country Link
DE (1) DE102020209532A1 (fr)
WO (1) WO2022022887A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007034796A1 (de) * 2007-07-25 2009-01-29 Wellcomet Gmbh Vorrichtung zur Erzeugung von hochfrequenten Strömen, zur kosmetischen und/oder therapeutischen Behandlung von Gewebe mittels Elektroden
US20130282085A1 (en) * 2006-01-17 2013-10-24 Endymed Medical Ltd. Skin treatment devices and methods
US20140207217A1 (en) * 2006-01-17 2014-07-24 Endymed Medical Ltd. Skin treatment devices and methods
US20180000533A1 (en) * 2016-07-01 2018-01-04 Cynosure, Inc. Non-invasive uniform and non-uniform rf methods and systems
US20180126160A1 (en) * 2016-11-07 2018-05-10 Lg Electronics Inc. Skin care device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US874672A (en) 1907-02-21 1907-12-24 Arnest E Gowin Flue-stop.
US8700176B2 (en) 2006-07-27 2014-04-15 Pollogen Ltd. Apparatus and method for non-invasive treatment of skin tissue
EP2394594A1 (fr) 2007-12-05 2011-12-14 Syneron Medical Ltd. Applicateur d'énergie électromagnétique jetable et son procédé d'utilisation
ES2562990T3 (es) 2011-09-05 2016-03-09 Venus Concept Ltd Dispositivo estético mejorado para embellecer la piel

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130282085A1 (en) * 2006-01-17 2013-10-24 Endymed Medical Ltd. Skin treatment devices and methods
US20140207217A1 (en) * 2006-01-17 2014-07-24 Endymed Medical Ltd. Skin treatment devices and methods
US9827437B2 (en) 2006-01-17 2017-11-28 Endymed Medical Ltd Skin treatment devices and methods
US9844682B2 (en) 2006-01-17 2017-12-19 Endymed Medical Ltd. Skin treatment devices and methods
DE102007034796A1 (de) * 2007-07-25 2009-01-29 Wellcomet Gmbh Vorrichtung zur Erzeugung von hochfrequenten Strömen, zur kosmetischen und/oder therapeutischen Behandlung von Gewebe mittels Elektroden
US20180000533A1 (en) * 2016-07-01 2018-01-04 Cynosure, Inc. Non-invasive uniform and non-uniform rf methods and systems
US20180126160A1 (en) * 2016-11-07 2018-05-10 Lg Electronics Inc. Skin care device

Also Published As

Publication number Publication date
DE102020209532A1 (de) 2022-02-03

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