DE202022002723U1 - Device for cosmetic care of human skin - Google Patents

Abstract

Device for the cosmetic care of human skin comprising at least one housing with at least one interchangeable module / attachment as a head and at least one handle, wherein
- the at least one replaceable module has at least one agent for cosmetic skin care, in particular an agent with a surface configured for contact with the skin surface;
- at least one drive unit comprising at least one motor for generating rotational/vibratory oscillations and/or at least one piezo element for generating ultrasonic oscillations is integrated into the at least one exchangeable module, and
- the handle is designed to hold one module at a time.

Description

The present invention relates to a device for the cosmetic care of human skin.

Description

Appearance is important to many people. In recent years, methods and devices have been developed for various cosmetic and dermatological applications, such as hair removal, reduction or removal of wrinkles, skin rejuvenation. In some of these methods, electromagnetic irradiation or optical irradiation is used. Depending on the wavelength, optical radiation can heat the skin, close wounds by coagulation and cause photochemical effects.

JP 2007090139 A discloses an ultrasonic device for cosmetic skin treatment with a sonotrode head coupled to an ultrasonic vibrator for transmitting the mechanical vibration of the ultrasonic waves.

There are approaches to combine the different applications for cosmetic skin treatment.

In the KR 101311142 B1 a cosmetic device is described, for example, which can have a massage head or a make-up head. The device has a vibration motor and a piezo element for generating ultrasound, with the vibration motor and piezo element being built into the housing of the cosmetic device. The massage head consists of a metallic element which is firmly connected to the housing and is coupled on the underside to the piezo element arranged in the housing. The metallic element also has a groove or groove on an outer circumference of the housing, which is provided for attaching the make-up head. Projections in the make-up head engage in the groove of the metallic element.

Electromagnetic treatment can also be combined with mechanical treatment such as massage, hair removal, ultrasound to treat fatty tissue.

In the EP 2 506 773 B1 a device for cosmetic skin treatment is described, for example, which has a handle with different interchangeable modules for carrying out different treatment methods. These modules enable, for example, a) mechanical hair removal, skin massage to reduce cellulite, skin ablation, acne removal, ultrasound treatment, or application of electromagnetic radiation to heat the skin.

The attachments or modules described here use, among other things, a roller with tweezers, blades for removing hair, or a roller with diamond powder for skin removal or a roller with protrusions for skin massage. Each roller will be driven by a DC motor provided in the attachment. Another attachment can have a vacuum pump, possibly also in combination with RF electrodes and/or a radiation source. Reference is also made to the possible use of an attachment for ultrasound treatment, with transducers being used as the ultrasound source, which are each arranged at a predetermined distance from one another on opposite borders of a skin section to be treated.

For receiving the modules, the handle has two different receiving stations or receiving areas, which are separated from one another by means of a projection. One receiving station is for receiving modules for hair removal, skin rejuvenation, skin massage, etc., while the second receiving station is for receiving modules with an illumination source, such as a xenon lamp, laser diode, LED, and others. However, this complex structural design of the handpiece stands in the way of a simple and efficient use of the modules.

Accordingly, it was the object of the present invention to provide a device for cosmetic care that is easy to operate and at the same time enables a large number of different care approaches.

This object is achieved by a cosmetic device having the features of claim 1.

• - das mindestens eine austauschbare Modul mindestens ein Mittel zur kosmetischen Hautpflege, insbesondere ein Mittel mit einer Oberfläche konfiguriert zum Kontakt mit der Hautoberfläche, aufweist;
• - in das mindestens eine austauschbare Modul mindestens eine Antriebseinheit umfassend mindestens einen Motor zur Erzeugung von Rotations / Vibrationsschwingungen und/oder mindestens ein Piezoelement zur Erzeugung von Ultraschallschwingungen integriert ist, und
• - der Handgriff zur Aufnahme von jeweils (nur) einem Modul ausgelegt ist.

Accordingly, a device for the cosmetic care of human skin is provided comprising at least one housing with at least one exchangeable module or attachment as a head part and at least one handle, wherein

• - the at least one replaceable module has at least one agent for cosmetic skin care, in particular an agent with a surface configured for contact with the skin surface;
• - at least one drive unit comprising at least one motor for generating rotational/vibratory oscillations and/or at least one piezo element for generating ultrasonic oscillations is integrated into the at least one exchangeable module, and
• - the handle is designed to hold (only) one module at a time.

The at least one drive unit in the exchangeable module can thus comprise at least one motor or at least one piezo element or a combination of motor and piezo element. This flexibility thus allows the provision of different cosmetic functions combined in a single device.

In one embodiment of the present device, the at least one motor integrated into the at least one interchangeable module generates an oscillation speed or rotational speed in a range between 1500 and 3500 rpm, preferably between 2000 and 3000 rpm, particularly preferably between 2500 and 2800 rpm.

In a further embodiment of the present device, the at least one piezo element integrated into the at least one exchangeable module generates ultrasonic vibrations in a range between 20 kHz and 3 MHz, preferably between 25 kHz and 2 MHz. The piezo element generates ultrasound through the inverse piezo effect. To do this, an electrical AC voltage is applied to a piezoelectric material.

In one embodiment, ultrasonic vibrations in the range of low-frequency ultrasound with frequencies between 20 and 80 kHz are used. Low-frequency ultrasound is often used in cleaning processes - both on the skin and in physical cleaning, such as cleaning glasses or medical equipment in water basins.

In a further embodiment, ultrasonic vibrations in the range of high-frequency ultrasound with frequencies between 0.8 and 3 MHz, preferably between 1 and 1.5 MHz, are used. This area is mainly used in skin care treatments.

In one embodiment, the piezo element consists of a ceramic element or a crystal (e.g. a P-44 crystal with a silver coating on the outer surface), with specially tailored materials being used depending on the desired target frequency. If these are now "electrified", these crystals begin to oscillate in the desired ultrasonic oscillation.

• ▪ Die Zellzwischenräume in der Haut werden durch Ultraschall-Schwingungen erweitert, was das Eindringen von Wirkstoffen erleichtert. Gleichzeitig erhöht Ultraschall die Durchlässigkeit der Zellmembranen, so dass Wirkstoffe schneller an ihr eigentliches Ziel gelangen.
• ▪ Die Ultraschall-Schwingungen wirken auf die Haut wie eine Mikromassage der elastischen (Kollagen-)Fasern und regen so die Neubildung von Kollagen an. Dadurch können die Körperkonturen und das Gesicht gestrafft werden. Die Kollagensynthese und die Elastinbildung können durch Ultraschall-Schwingungen um bis auf das Doppelte gesteigert werden, was Spannkraft und Elastizität der Haut sichtbar verbessert.
• ▪ Ultraschall-Schwingungen erzeugen in der Haut eine Tiefenwärme, die den Stoffwechsel anregt und den Abtransport von unerwünschten Stoffen fördert. Das regt die Regeneration an und wirkt z.B. an Po und Oberschenkel Cellulite entgegen.

The application of ultrasonic vibration for skin care has various advantages. Depending on the frequency and power, ultrasonic vibrations penetrate a few centimeters into the skin and tissue. The ultrasonic vibrations produce the following effects:

• ▪ The cell gaps in the skin are expanded by ultrasonic vibrations, which facilitates the penetration of active ingredients. At the same time, ultrasound increases the permeability of the cell membranes so that active ingredients reach their actual target more quickly.
• ▪ The ultrasonic vibrations act on the skin like a micro-massage of the elastic (collagen) fibers and thus stimulate the formation of new collagen. This can tighten the body contours and the face. Collagen synthesis and elastin formation can be doubled by ultrasonic vibrations, which visibly improves the skin's resilience and elasticity.
• ▪ Ultrasonic vibrations generate deep heat in the skin, which stimulates the metabolism and promotes the removal of unwanted substances. This stimulates regeneration and counteracts cellulite on the buttocks and thighs, for example.

The skin and skin cells react differently to certain vibrational areas. Therefore, the use of rotational or vibrational oscillations and ultrasonic oscillations are differently suitable for certain skin sections and care effects.

Vibration oscillations in a range of e.g. 2800 rpm, especially in combination with heat and cold effects, enable an improvement in the penetration of cosmetic active ingredients into the skin. However, vibration technology has two disadvantages compared to ultrasonic vibrations. On the one hand, the penetration depth and the reaction of the intercellular spaces are lower than with ultrasound. Ultrasound is much more capable of transporting active ingredients deeper and faster into the skin. On the other hand, the vibration does not trigger any stimulation of cell metabolism or collagen synthesis.

In a preferred embodiment of the present device, the at least one replaceable module has a brush head for cleaning sections of skin. In this case, the brush head is excited by vibration swings generated by a motor. Correspondingly, the at least one replaceable module with a brush head has at least one motor for generating vibratory oscillations. The rotational speed generated by the motor is preferably in a range between 2000 and 3000 rpm, preferably between 2500 and 2900 rpm, e.g. at 2800 rpm.

In a further preferred embodiment of the present device, the at least one exchangeable module has a massage attachment, e.g. a nub attachment, for skin treatment and manual massage. In this case, the massage attachment is stimulated both by vibration oscillations and ultrasonic oscillations. Correspondingly, the at least one exchangeable module with a massage attachment has at least one motor for generating rotational/vibratory oscillations and at least one piezo element for generating ultrasonic oscillations. The rotational speed generated by the motor is preferably in a range between 2000 and 3000 rpm, preferably between 2500 and 2900 rpm, e.g. at 2800 rpm. The piezo element generates ultrasonic waves with a frequency between 0.5 and 1 MHz, preferably between 0.8 and 1 .2MHz, e.g. 1MHz. In one variant, ultrasonic waves with a frequency between 0.9 and 1.2 MHz, preferably at a maximum voltage of 70 V, are generated.

The advantage of using a combination of vibration and ultrasound is that the ultrasonic vibration destroys fat cells, so to speak, they explode; the massage effect of the vibrating attachment supports the removal of fat cells via the lymphatic system. Active ingredients from cosmetic creams can be introduced deeper and faster into the skin using ultrasound, whereby a depot can be built up there for faster, stronger and longer-lasting results.

In another preferred embodiment of the present device, the at least one exchangeable module has a sonotrode attachment with a plate, e.g. a circular plate for facial treatment. The plate is a metallic member (e.g., aluminum or an alloy) and is preferably circular in shape with a domed base as the top or skin-contacting surface. By using a plate-shaped sonotrode attachment, a relatively large skin surface can be treated at the same time.

In this case, the attachment is excited by ultrasonic vibrations. Correspondingly, the at least one exchangeable module with a sonotrode attachment has at least one piezo element for generating ultrasonic vibrations. The piezo element is arranged on the underside of the metal plate to transmit the ultrasonic vibrations generated by the piezo element to the metal plate. The piezo element generates ultrasonic waves with a frequency between 0.5 and 1 MHz, preferably between 0.8 and 1.2 MHz, for example 1 MHz. In one variant, ultrasonic waves with a frequency between 0.9 and 1.2 MHz, preferably at a maximum voltage of 70 V, are generated.

The module with a plate-shaped sonotrode attachment is particularly suitable for an anti-aging treatment. Ultrasound stimulates cell metabolism and collagen synthesis for improved skin structure and a smooth skin surface; Active ingredients from cosmetic creams are smuggled deeper and faster into the skin by means of ultrasound, where a depot is built up for a faster, stronger and longer-lasting result.

In yet another preferred embodiment of the present device, the at least one exchangeable module has a sonotrode attachment with a flat element. The flat element can also be described as a projection. The end surface, i.e. the surface that comes into contact with the skin to be treated, is preferably curved so that continuous skin contact is ensured while at the same time the device can be easily held by the user. This (curved) end face acts as a vibrating surface for skin contact while the opposite end of the sheet is in contact with the piezo element. The flat, preferably rectangular element is preferably made of a metallic material such as aluminum or an alloy. The flat element tapers from the contact side with the piezo element towards the vibration surface.

In this case, too, the attachment is excited by ultrasonic vibrations. Correspondingly, the at least one exchangeable module with a flat sonotrode attachment has at least one piezo element for generating ultrasonic vibrations. The piezo element generates ultrasonic waves with a frequency between 15 and 50 kHz, preferably between 20 and 40 kHz, particularly preferably between 20 and 30 kHz, such as 25 kHz. In one variant, ultrasonic waves are generated with a frequency between 23 kHz and 26 kHz, preferably at a voltage of 300 V pk-pk max.

The module with the flat sonotrode attachment is particularly suitable for professional skin smoothing and deep cleansing at home (so-called cavitation peeling). The skin is visibly smoothed, the complexion becomes more even and radiant, the skin is cleansed down to the pores.

Ultrasonic vibrations vaporize water molecules on moistened skin. The top skin flakes are just like pore-deep dirt and environmental toxins are safely loosened and removed. The skin is visibly and noticeably smoothed, the complexion more even and radiant, the skin is cleansed down to the pores and the formation of new cells (regeneration) is stimulated by removing the uppermost skin cells. By cleaning and removing parts of the outermost skin cells, the skin becomes more receptive to subsequently applied cosmetic active ingredients and is optimally prepared for further cosmetic treatments.

The special ultrasonic frequency of 25 kHz that is used here ensures that water molecules on the skin surface vibrate and are thus vaporized ("evaporate"). To do this, the skin must be moistened beforehand. The vaporization of the water molecules is comparable to the smallest micro-implosions on the skin. The energy released in the process loosens dirt that has settled down into the deeper skin pores as well as parts of the uppermost skin cell layer. These are the so-called keratinocytes, which form the quite uneven surface of the skin as dead skin cells. This appears under the microscope as an uneven mountain range. This uneven surface scatters the light very diffusely, which is perceived by the eye as a loss of radiance in the skin.

The cavitation peeling ensures a smoothing of the skin surface and thus a significantly more radiant complexion. At the same time, the skin is stimulated to form new skin cells evenly from below. The protective effect of the skin is therefore not impaired by the Cavitation Peeling.

As stated above, in addition to the at least one exchangeable module, the present device comprises at least one handle as the head part, with the handle being designed to hold (only) one module at a time. This has the advantage that both handling and the effectiveness of the various modules are improved. On the one hand, the area of the individual modules available for skin contact is increased and, on the other hand, the modules can be exchanged quickly and easily.

A rechargeable battery and at least one circuit are preferably provided in the at least one handle. The at least one handle also has at least one switch and one display unit, in particular an LED element for displaying the battery status and displaying the attachment. The respective attachment is identified by tags, e.g. RFID tag, or a circuit attached to the attachments.

The housing of the handle is made of plastic. The shape of the housing is preferably designed in such a way that the handle adapts to the curvature of the hand and lies comfortably in the user's hand.

In addition, the lower portion of the handle opposite the head portion is configured for inclusion in a charging station.

• 1 eine Darstellung des erfindungsgemäßen Gerätes umfassend einen Handgriff und auswechselbare Aufsatzmodule;
• 2 eine schematische Querschnittsdarstellung einer ersten Ausführungsform eines Aufsatzmodules;
• 3 eine schematische Querschnittsdarstellung einer zweiten Ausführungsform eines Aufsatzmodules;
• 4 eine schematische Querschnittsdarstellung einer dritten Ausführungsform eines Aufsatzmodules; und
• 5 eine schematische Querschnittsdarstellung einer vierten Ausführungsform eines Aufsatzmodules;

The present invention is explained below using several exemplary embodiments with reference to the figures. Show it:

• 1 a representation of the device according to the invention comprising a handle and interchangeable attachment modules;
• 2 a schematic cross-sectional view of a first embodiment of an attachment module;
• 3 a schematic cross-sectional view of a second embodiment of an attachment module;
• 4 a schematic cross-sectional view of a third embodiment of an attachment module; and
• 5 a schematic cross-sectional view of a fourth embodiment of an attachment module;

1 gives an overview of the device 10 according to the invention with various attachment modules. The device consists of a housing 11 which has an opening 12 on one (upper) side for receiving the various attachment modules 13, 14, 15, 16. The attachment modules enable different approaches to the treatment and care of human skin, such as a brush head 13 for cleaning the skin, a massage head 14, an attachment for anti-aging treatment 15 and an attachment for skin smoothing and deep cleansing 16.

The handle 11 is configured on the side opposite the opening 12 to be received in a charging station 17 . Also, the handle 11 is provided with a switch 18 for turning the device 10 on and off.

2 shows the cross section of an attachment module 13a configured for a brush head 13 for cleaning sections of skin. The brush head is excited by vibration or rotation oscillations, which are generated by a motor 13b. The motor 13b transmits the rotation via a shaft arrangement 13c to the rotary shaft 13d, onto which the brush head is placed and by which the brush head is rotated. The rotation speed generated by the motor is 2800 rpm.

3 shows the cross section of an attachment module for a massage attachment 14 with knobs 14c for skin treatment and manual massage. The massage attachment 14 has a motor 14a for generating rotational/vibratory oscillations and a piezoelectric element 14b for generating ultrasonic oscillations. The rotation speed generated by the motor is 2800 rpm. The piezo element generates ultrasonic waves with a frequency of 1 MHz. The piezo element is in direct contact with the surface of the massage attachment provided with nubs 14c, as a result of which the ultrasonic vibrations are transmitted directly.

4 shows the cross section of an attachment module for a sonotrode attachment 15 with a curved, circular plate 15a for facial treatment. The curved plate 15a is a metallic member (eg, aluminum or an alloy) and preferably has a cylindrical shape with a curved base as the top or outer surface for skin contact. The sonotrode attachment 15 has a piezo element 15b for generating ultrasonic vibrations. The piezoelectric element 15b is arranged on the underside of the curved metal plate 15a in order to transmit the ultrasonic vibrations generated by the piezoelectric element to the metal plate. The piezo element generates ultrasonic waves with a frequency of 1 MHz.

5 shows the cross section of an attachment module for a sonotrode attachment 16 with a flat element 16a with a bent end face 16b for skin contact for facial treatment. The flat element has a shape that tapers in the direction of the bent end face 16b. The bent end face 16b acts as a vibrating surface for skin contact. The sonotrode attachment 16 contains a piezo element 16c for generating ultrasonic vibrations. The piezo element generates ultrasonic waves with a frequency of 25 KHz.

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• JP 2007090139 A [0003]
• KR 101311142 B1 [0005]
• EP 2506773 B1 [0007]

Claims (13)

Device for the cosmetic care of human skin comprising at least one housing with at least one interchangeable module / attachment as a head and at least one handle, wherein - the at least one replaceable module has at least one agent for cosmetic skin care, in particular an agent with a surface configured for contact with the skin surface; - at least one drive unit comprising at least one motor for generating rotational/vibratory oscillations and/or at least one piezo element for generating ultrasonic oscillations is integrated into the at least one exchangeable module, and - the handle is designed to hold one module at a time. device after claim 1 , characterized in that the at least one motor integrated into the at least one interchangeable module generates an oscillation speed/rotational speed in a range between 1500 and 3500 rpm, preferably between 2000 and 3000 rpm, particularly preferably between 2500 and 2800 rpm. Device according to one of the preceding claims, characterized in that the at least one piezo element integrated into the at least one exchangeable module generates ultrasonic vibrations in a range between 20 kHz and 3 MHz, preferably between 25 kHz and 2 MHz. Device according to one of the preceding claims, characterized in that the at least one exchangeable module has a brush head for cleaning sections of skin. device after claim 4 , characterized in that the at least one replaceable module with brush head comprises at least one motor for generating vibratory oscillations. device after one of Claims 1 - 3 , characterized in that the at least one interchangeable module has a nub attachment for skin treatment and manual massage. device after claim 6 , characterized in that the at least one interchangeable module with knob attachment has at least one motor for generating rotational/vibratory oscillations and at least one piezoelectric element for generating ultrasonic oscillations. device after one of Claims 1 - 3 , characterized in that the at least one interchangeable module has a sonotrode attachment with a plate for facial treatment. device after claim 8 , characterized in that the at least one interchangeable module with sonotrode attachment has at least one piezoelectric element for generating ultrasonic vibrations. device after one of Claims 1 - 3 , characterized in that the at least one interchangeable module has a sonotrode attachment with a flat element for facial treatment. device after claim 10 , characterized in that the at least one interchangeable module with sonotrode attachment has at least one piezoelectric element for generating ultrasonic vibrations. Device according to one of the preceding claims, characterized in that a rechargeable battery and at least one circuit are provided in the at least one handle. Device according to one of the preceding claims, characterized in that the at least one handle has at least one display unit, in particular an LED element for displaying the battery status and displaying the attachment.

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