WO2024003079A1

WO2024003079A1 - Extraction head for extracting impurities from the skin

Info

Publication number: WO2024003079A1
Application number: PCT/EP2023/067523
Authority: WO
Inventors: Jean Benoit; Yegor DOMANOV
Original assignee: Lpg Systems
Priority date: 2022-06-28
Filing date: 2023-06-27
Publication date: 2024-01-04
Also published as: FR3136951A1

Abstract

Extraction head (10) for extracting impurities from the skin, characterized in that it comprises: - a housing (16) defining an internal chamber (20), the internal chamber opening onto an opening (17) intended to be applied to the skin, - a skin-pinching means (18) arranged at said opening, and - a suction duct (19) intended to be connected to a suction means (5) for creating a negative pressure at the opening.

Description

DESCRIPTION

TITLE: Skin impurity extraction head

Technical field of the invention

The invention relates to the field of cosmetic skin treatment devices, in particular the field of devices intended to extract impurities from the skin, in particular blackheads or comedones. The invention also relates to a cosmetic treatment method with such an extraction device.

State of the prior art

The skin of the human body, and in particular the skin of the face, sometimes presents impurities, such as comedones or blackheads, which it is desirable to remove or reduce. We know an extraction method by pinching, in particular with the fingers. However, this method can lead to local injury to the skin. In addition, it is unhygienic and is not always effective. In particular, extracting impurities from certain areas of the face such as the base of the nose or around the nostrils is particularly difficult.

Extraction methods based on the use of utensils such as blackhead removers are also known. Blackhead removers are also unhygienic and do not always effectively extract impurities. Suction extraction devices are also known. For example, publication WO2016167496 discloses suction combined with positive pressure to extract a blackhead. In practice, such devices are not sufficiently effective. Presentation of the invention

The aim of the invention is to provide a device for extracting impurities from the skin which overcomes the above drawbacks and improves the devices known from the prior art.

More precisely, a first object of the invention is an extraction device that is both hygienic, making it possible to effectively extract impurities from the skin and limiting the traumatic impact of skin tissues.

Summary of the invention

The invention relates to a head for extracting impurities from the skin, comprising:

- a housing defining an internal chamber, the internal chamber opening onto an opening, the opening comprising a perimeter intended to be applied against the skin to close the internal chamber,

- a skin pinching means arranged at said opening, and

- a suction conduit intended to be connected to a suction means to create a depression at the opening.

The housing may comprise at least one flexible wall bordering said opening, the wall being intended to deform when the periphery of the opening is applied against the skin.

The flexible wall may be made of silicone.

The periphery of the opening may comprise a convex shape when the opening is in an enlarged configuration. The opening may include a non-convex shape when the opening is in a constricted configuration. The pinching means can be configured to vary at least one dimension of said opening.

Said dimension of the opening may be able to vary between a first value between 5mm and 10mm inclusive and a second value, strictly less than the first value, and between 2mm and 5mm inclusive.

The pinching means may comprise at least one mobile element pivotally mounted relative to the housing, in particular at least two mobile elements pivotally mounted relative to the housing, the at least one mobile element comprising a first end configured to pinch the skin.

The first end of the at least one movable element can rest on the flexible wall to vary the at least one dimension of said opening.

The extraction head may include a removable filter arranged in the suction conduit.

The invention also relates to an apparatus for extracting impurities from the skin, comprising an extraction head as defined above, and a handle provided with electrical drive means cooperating with said pinching means to pinch the skin. skin.

The handle may comprise a cam capable of being rotated by the electrical drive means, the cam cooperating with said pinching means to pinch the skin.

The extraction device can be configured to pinch the skin according to a first given frequency, in particular a frequency between 1Hz and 5Hz.

The invention also relates to a device for extracting impurities from the skin, comprising an extraction apparatus as defined above and a suction means connected to the suction conduit of the extraction head.

The extraction device can be configured to vary a depression at the skin level according to a second given frequency, in particular a frequency between 1 Hz and 5 Hz.

The suction means can be synchronized with the electric drive means. In particular, the first frequency may be equal to the second frequency and/or the first frequency may be a multiple of the second frequency and/or the second frequency may be a multiple of the first frequency.

The invention also relates to a cosmetic treatment process, comprising:

- bringing the opening of an extraction head into contact against the skin as defined previously, then simultaneously:

- pinching of the skin, and

- the creation of a depression in the internal chamber of the extraction head.

Presentation of figures

These objects, characteristics and advantages of the present invention will be explained in detail in the following description of a particular embodiment made on a non-limiting basis in relation to the attached figures among which:

Figure 1 is a schematic view of an extraction device according to a embodiment of the invention, the extraction device comprising an extraction apparatus connected to a base provided with suction means.

Figure 2 is a perspective view of a handle of the extraction device.

Figure 3 is a front view of the handle.

Figure 4 is a perspective view of an extraction head of the extraction apparatus.

Figure 5 is a perspective view of a pinching means and a filter of the extraction head.

Figure 6 is a sectional view of the extraction apparatus, an opening of the extraction head being in a constricted configuration.

Figure 7 is a sectional view of the extraction apparatus, the opening of the extraction head being in an enlarged configuration.

Figure 8 is a diagram illustrating the kinematics of mobile elements integrated into the extraction head.

Figure 9 is a graph illustrating the temporal evolution of the depression within an internal chamber of the extraction head during a treatment process according to one embodiment of the invention.

detailed description

Figure 1 schematically illustrates an extraction device 1 according to one embodiment of the invention. The extraction device 1 is intended to mechanically extract impurities from the skin, in particular blackheads, more generally called comedones. These impurities block certain pores of the skin, at a superficial layer of the skin, generally at the level of the epidermis. The extraction device therefore aims to bring out, at least partially, these impurities from the skin. The extraction device is preferably intended to treat the face but may also be suitable for treating any other part of the human body. The extraction device is not intended to apply skin massage. It is intended to be applied locally at the level of an impurity of the skin, without moving the extraction device relative to the surface of the skin during the extraction of an impurity.

According to the embodiment shown in Figure 1, the extraction device 1 comprises an extraction device 2 and a remote station 3, and connected to the extraction device 2. The station 3 may in particular comprise a means of suction 5 and/or a source of electrical energy 6 connected to the extraction device 2 respectively by a conduit 7 and an electric cable 8. The extraction device 2 is a device that can be manipulated by hand. It is intended to be handled by a user to treat impurities on their skin or by a person responsible for applying aesthetic treatments to a patient's skin.

The integration of the suction means 5 and/or the electrical energy source 6 in the station 3 makes it possible in particular to make the extraction device 2 lighter and more compact, which makes it easier to handle. In addition, the station 3 can optionally be configured to be connected to other skin treatment devices or tools, which makes it possible to pool the suction means 5 and/or the electrical energy source 6. The device extraction 1 can thus be used for a whole range of aesthetic treatments including the extraction of impurities from the skin. Station 3 may be intended to be connected to an electricity distribution network. It can be movable, in particular by means of casters.

According to a variant embodiment of the invention, the suction means 5 and/or the electrical energy source 6 could be integrated into the extraction device 2 so that they can be used wirelessly. In this case, the source of electrical energy 6 can advantageously be a battery, in particular a rechargeable battery, integrated into the extraction device 2. The extraction device 2 comprises an extraction head 10 and a handle 11. The handle 11, particularly illustrated in Figure 2, comprises a generally elongated shape so as to be grasped with one hand. The extraction head 10 is fixed to one end of this handle 11. Advantageously, the extraction head 10 is removably fixed to the handle, which makes it possible to consider fixing other treatment heads on this same handle, in order to apply other skin treatments. For this purpose, the handle includes a snap-on fixing interface 12.

Advantageously, the handle 11 also comprises pneumatic and electrical connection means to which the conduit 7 and the electric cable 8 are respectively connected. In addition, the handle 11 comprises an electric drive means 13, in particular an electric motor. The electrical drive means 13 has an output shaft 14 to which a cam 15 is fixed (best visible in Figure 3). The cam 15 is rotatably mounted around an axis of rotation A1 corresponding to the axis in which the handle 11 extends. As we will see later, the cam 15 drives a pinching means 18 of the skin which is integrated into the extraction head 10. The cam 15 can have a generally ellipsoidal shape, that is to say with two opposite lobes arranged around its circumference. For example, the small diameter D1 of cam 15 can be between 15 mm and 20 mm inclusive. The largest diameter D2 of the cam 15 can be strictly greater than the small diameter D1 and between 20 mm and 30 mm inclusive. Alternatively, the dimensions and/or number of lobes could be different, for example a single lobe, three lobes or even more lobes. Advantageously, the cam 15 can take the form of a groove or a corrugated groove.

The extraction head 10 is illustrated in more detail in Figures 4 and 5. The extraction head 10 comprises a housing 16 provided with an opening 17 of which the entire periphery is intended to be applied against the skin, the pinching means 18 arranged at the level of the opening 17, and a suction conduit 19. The periphery of the opening 17, in other words the perimeter of the opening 17 forms a closed line, as opposed to a line delimited by two ends. The entire perimeter is intended to come into contact with the skin.

The housing 16 defines an internal chamber 20 which opens onto the opening 17. The internal chamber 20 communicates with the suction conduit 19 which is connected to the suction means 5. The opening 17 has dimensions such that the whole of its surroundings can come into contact with the skin simultaneously. We can thus close the internal chamber with the surface of the skin. In other words, when the opening is applied to the skin, the entire perimeter of the opening is in contact with the skin which forms an airtight seal. Advantageously, the perimeter of the opening is able to come into contact with the skin without any interruption likely to generate an air leak. It is then possible to form a depression in the internal chamber 20, which causes local suction of the skin, at the level of a zone inscribed in the opening 17. The local suction of the skin forms a skin fold which leads to an opening of the pores of the skin. This facilitates the extraction of impurities. Local suction of the skin therefore not only allows the impurity to be sucked up once it has been extracted from the skin, but it also allows the formation of a skin fold which allows the pinching means to act more effectively. .

Air can thus be sucked in through the opening 17 when it is not applied against the skin.

According to one embodiment of the invention, the housing 16 comprises a rigid part 21 intended to be snapped onto the handle 11 and a part more flexible 22 in which the opening 17 is formed. The opening 17 is thus bordered by a flexible wall. Consequently, the opening 17 is a deformable opening. The flexible nature of the perimeter of the opening 17 allows variation of at least one of the dimensions of the opening. This further makes it possible to form an airtight interface between the housing and the skin, whatever the geometry of the skin, particularly when the skin forms a rounded surface such as in the area of the forehead, chin, cheekbones or of the nose.

The housing 16 is advantageously made of two different materials. The flexible part 22 can for example be made of silicone, or as a variant of any other sufficiently flexible material such as an elastomer or rubber. The rigid part 21 can be made of a more rigid plastic material or metal, so as to integrate a fixing interface with the handle 11. The flexible part and the rigid part of the housing can be fixed together, for example by gluing or welding. The housing can also be produced using a two-material injection manufacturing process such as overmolding or co-injection. The thickness of the flexible wall can for example be between 1 mm and 5 mm. Alternatively, the housing 16 could only include the flexible part. In this hypothesis, the means of fixing the extraction head 10 to the handle 11 would be adapted accordingly.

Advantageously, the housing 16 comprises a generally frustoconical external shape, at least at the level of the end in which the opening 17 is provided. A frustoconical shape designates in the broad sense any shape whose section is parallel to the plane in which the extends. The opening 17 increases as this section moves away from the opening 17. Consequently, the extraction head 10 is thinner at the level of the end in which the opening 17 is formed than at the level of its fixing interface with the handle 1 1. This frustoconical shape allows to access the most difficult to reach areas of the face, such as the base of the nose or nostrils.

The opening 17 can therefore be deformed between at least two distinct shapes. This allows you to pinch the skin around the impurity to be treated. In Figure 4, a first solid line L1 shows the shape of the periphery of the opening 17 in a first configuration, called enlarged configuration. In this first configuration, the perimeter of the opening 17 can have any convex shape, in particular a generally ovoid or circular shape. A perimeter is said to be convex when, for any set of two points belonging to this perimeter, the segment which joins these two points is contained inside this perimeter. A second line L2 in dotted lines represents the periphery of the opening 17 in a second configuration, called constricted configuration. In this second configuration, two opposite edges of the opening come together forming rounded portions oriented towards the center of the opening. In other words, the shape of the opening 17 in this second configuration is concave or non-convex. A perimeter is said to be non-convex when there exist two points belonging to this perimeter such that the segment which joins these two points extends outside this perimeter. The dimension D3 of the opening 17 thus varies between a first value and a second value strictly less than the first value. When the opening 17 is in its first configuration, the dimension D3 can for example be between 5mm and 10mm inclusive. When the opening 17 is in its second configuration, the dimension D3 can for example be between 2mm and 5mm inclusive. Such dimensions are particularly suitable for effectively extracting blackheads from the skin, or at least initiating their extraction from the skin. As a note, other dimensions of the opening 17 may remain generally unchanged between the first and second configuration. Thus, dimension D4, measured along an axis perpendicular to dimension D3, can be at least roughly unchanged between the first and second configuration of the opening. Alternatively, the dimension D4 of the opening could also vary between the first and the second configuration. Generally speaking, the surface of the opening in its first configuration is preferably strictly greater than the surface of the opening in its second configuration. As a note, the shapes of the opening 17 in a narrowed or widened configuration could be freely adapted, in particular with a view to treating specific areas of the human body, in particular specific areas of the face. The extraction device can thus be supplied with various removable extraction heads, adapted for different areas to be treated. Advantageously, the perimeter of the opening 17 can extend at least roughly in one plane. In particular, the periphery of the opening 17 can extend in a plane when the opening is in its first configuration and when the opening is in its second configuration.

The pinching means 18 is configured to vary at least one dimension of the opening 17. The reduction of the dimension D3 of the opening 17 therefore produces pinching of the skin. In particular, the pinching means 18 comprises a mechanical member making it possible to vary the dimension D3 of the opening 17. More precisely, it comprises at least one mobile element, or valve, mounted to pivot relative to the housing 16. Depending on the mode embodiment presented, the pinching means 18 comprises two movable elements integrated into flexible walls of the housing, diametrically opposed. Alternatively, the pinching means 18 could comprise a different number of movable elements, for example a single movable element or more than two movable elements. For example, pinching of the skin could also be obtained with a single movable element pinching the skin against a wall of the housing 16. The movable elements are generally elongated elements. They are mounted pivoting relative to the housing along an axis A2 perpendicular to the axis of rotation A1 of the cam 15. For this purpose, each movable element comprises two lugs 23 extending parallel to the axis A2 and cooperating with recesses of complementary shape provided in the housing 16. Each movable element comprises in in addition to a first end 24 in contact with the flexible wall. This first end 24 can for example be a metal blade. This metal blade can be, for example, overmolded or inserted into a plastic body of the mobile element. Alternatively, the entire movable element could be made of metal. This first end 24 can be embedded in the thickness of the flexible wall or extend against the flexible wall. Generally speaking, the first end rests against the flexible wall so as to transmit to it the forces necessary to deform it. It can have a length of the order of several millimeters, or even several centimeters in the direction in which the mobile element extends. Advantageously, this first end 24 is both sufficiently rigid to transmit the forces making it possible to deform the opening 17 and to pinch the skin and thin enough not to significantly increase the thickness of the walls bordering the opening. Thus, the extraction head makes it possible to reach all areas of the face, even those that are most difficult to access. Finally, each movable element comprises a second end 25, opposite the first end 24, and cooperating with the cam 15. This second end 25 can for example comprise a sphere bearing on the cam 15. Advantageously, and as is visible on Figures 6 and 7, the handle 11 comprises a groove 28 arranged at the periphery of the cam and in which the two spheres can take place. The groove 28 thus forms a cam path. The two lugs 23 are positioned substantially towards the middle of each movable element, between the first end 24 and the second end 25, at the opposite end of the movable element. Figure 6 schematically illustrates the movement of the mobile elements between the two tightened and widened configurations of the opening 17. The solid lines represent the direction in which the mobile element extends when the extraction head is in the tightened configuration. The dotted lines represent the direction in which the movable element extends when the extraction head is in expanded configuration. We therefore understand that the kinematics of the moving elements can be easily adapted by adjusting the shape of the cam, in particular the dimensions D1 and D2 of the cam, and/or by adjusting the position of the pivot point formed by the lugs 23, and/or or by adjusting the length of the moving elements. We can thus obtain a more or less significant pinching effect. Advantageously, the extraction device can be supplied in the form of a kit comprising several heads and/or several cams in order to offer the user the possibility of adjusting the pinching effect obtained. When the cam rotates around the axis of rotation A1 at a given speed, the mobile elements pivot around the axis A2 which causes a variation of the dimension D3 of the opening 17 according to a first given frequency. Advantageously, the number of lobes of the cam and/or the rotational speed of the motor can be adapted so as to obtain a frequency of between 1 Hz and 5 Hz.

According to an alternative embodiment not shown, the variation of at least one dimension of the opening 17 could be obtained differently. For example, the extraction head could integrate:

- a diaphragm, and/or

- inflatable and deflatable areas, and/or

- electro-magnetic elements whose power of attraction or repulsion could be modulated by an electric current,

- piezoelectric means.

The variation of at least one dimension of the opening could even be obtained or amplified by the action of a depression generated by the means suction on the flexible walls of the extraction head. According to another alternative embodiment, the pinching means 18 could be dissociated from the walls bordering the opening 17. It could for example be arranged inside the internal chamber 20. In particular, the mobile elements could be mounted movable at the inside the internal chamber 20 and produce pinching of the skin without deformation of the opening 17.

The suction conduit 19 is intended to be connected to the suction means 5 to create a depression at the opening 17. The suction conduit 19 therefore passes through the extraction head 10 and is extended by a second conduit suction 26 provided in the handle 1 1. The second suction conduit 26 is connected to the suction means 5 via the conduit 7. The suction conduit 19 can be arranged inside the housing 16 and extend parallel to the axis of rotation A1. Alternatively, the suction conduit 19 could be formed directly by the walls of the housing 16. The second suction conduit 26 can, for example, pass through a central zone of the cam 15. It is therefore understood that the extraction head comprises a first opening intended to be applied against the skin (this first opening corresponding to the opening 17) and a second opening facing the second suction conduit 26 integrated into the handle 11. Alternatively, the suction conduit 19 could be connected directly to the suction means 5, without passing through the handle 11.

The suction means 5 may comprise, for example, a vacuum pump and/or a turbine. The vacuum level is high enough to extract impurities while being low enough to prevent bruising or hickeys from forming. For example, the depression produced by the suction means 5 can be between 10 kPa and 40 kPa, and preferably between 20 and 30 kPa relative to atmospheric pressure. Advantageously, the extraction head 10 comprises a removable filter 27 arranged in the suction conduit 19. The filter 27 advantageously comprises an envelope facilitating its handling and its integration into the suction conduit 19. The filter makes it possible to collect the impurities extracted from the skin and to prevent it from contaminating the suction means 5. Advantageously, the filter 27 is designed to be for single use. For example, it can be made with materials with a low environmental impact, particularly biodegradable.

Preferably, the extraction device is configured to vary a depression at the skin level according to a second given frequency. This can be achieved by directly controlling the suction means, or alternatively by providing a suction means producing a constant vacuum and means such as valves or valves configured to cyclically interrupt this suction. Such valves or valves can for example be integrated into the extraction head 10. They can also be actuated by the pinching means 18.

Figure 9 illustrates an example of the variation of the depression (on the ordinate) as a function of time (on the abscissa) within the internal chamber 20. Suction phases alternate in which the surface of the skin is in depression and non-suction phases in which the skin surface is at ambient pressure. The duration of these two phases can be approximately identical. Advantageously, the extraction device is configured so as to generate abrupt transitions between the non-suction phases and the suction phases, so as to accentuate the capacity for extracting impurities. Advantageously, the pressure variation within the internal chamber can be around 40kPa in a period of time between 0.5s and 2s during the transition between non-aspiration phases and aspiration phases.

An advantage of varying the depression level cyclically is that it is thus possible to achieve greater depression values without causing bruising. In fact, strong depressions are only applied to the skin for a short time. This preserves the skin while allowing sufficient extraction of impurities. In addition, the ambient pressure phases allow the extraction head to be moved freely on the surface of the skin without exerting stress on the skin.

Advantageously, the suction means 5 can be synchronized with the electrical drive means 13. In particular, the first frequency can be equal to the second frequency. The extraction device can thus be configured so that the pinching of the skin is carried out at the same time as the depression phase. When the skin is drawn through the opening it forms a fold which is easier to pinch than a flat surface. In addition, forming a fold helps open the pores of the skin, allowing impurities to emerge more freely. We thus obtain a synergistic effect between pinching and suction which further amplifies the power of extraction of impurities.

Alternatively, the first frequency may be a multiple of the second frequency, i.e. a greater number of skin pinches than suction phases occur per unit of time. However, each time a skin suction phase occurs, pinching is carried out simultaneously. According to another variant, the second frequency is a multiple of the first frequency, that is to say that a greater number of skin suction phases than pinching phases occur per unit of time. However, at each time a pinch of the skin occurs, a suction phase is carried out simultaneously.

The assembly of the extraction head 10 to the handle 11 is particularly simple to carry out since this can be obtained by a simple translational movement of the extraction head relative to the handle along the axis A1. Depending on the position taken by the spheres fitted at the second ends 25 of the movable elements, correct orientation of the extraction head relative to the cam may be necessary for this assembly operation. Advantageously, the groove 28 in which the spheres are positioned comprises ramps 29 which facilitate the assembly of the extraction head whatever its orientation relative to the cam around the axis A1.

The extraction device can thus be used in a therapeutic treatment process or, on the contrary, in a non-therapeutic treatment process such as a cosmetic treatment of the skin. Cosmetic skin treatment aims to cleanse the skin of its impurities in order to give it a refined and clean appearance. The treatment of the skin using the extraction device 1 can thus be described as a skin cleaning process. It can be implemented in a beauty treatment office or in a beauty institute. Alternatively, it can also be implemented personally by a user to treat their own skin at home. This non-invasive process aims to cleanse the epidermis of its impurities, or at least to prepare the epidermis for future extraction of impurities. According to one embodiment, the method comprises:

- bringing the extraction head 10 into contact against the skin of the opening 17, then simultaneously

- pinching of the skin, and

- the creation of a depression in the internal chamber 20 of the head extraction.

Advantageously, the pinching of the skin and the depression are carried out simultaneously. The dual action of pinching and suction promotes the extraction of impurities. The extraction device 2 and the extraction head 10 are therefore configured to implement such a method.

The treatment process may possibly include other complementary steps. In particular, in the event that the impurities are not completely extracted from the face at the end of the previous steps, the extraction process can be completed by steps during which different products are applied to the skin and/or during which we carries out additional mechanical treatment of the skin.

Thanks to the invention we have a skin extraction device which makes it possible to effectively extract impurities from the skin such as comedones or blackheads. This extraction device is also hygienic and protects the skin from the risk of excessive pinching or the appearance of a bruise. In addition, the extraction device makes it possible to treat impurities in all parts of the face, including those that are difficult to access.

Claims

1. Extraction head (10) of impurities from the skin, characterized in that it comprises:

- a housing (16) defining an internal chamber (20), the internal chamber opening onto an opening (17), the opening comprising a perimeter intended to be applied against the skin to close the internal chamber,

- a skin pinching means (18) arranged at said opening, and

- a suction conduit (19) intended to be connected to a suction means (5) to create a depression at the opening.

2. Extraction head (10) according to the preceding claim, characterized in that the housing (16) comprises at least one flexible wall bordering said opening (17), the wall being intended to deform when the periphery of the opening is applied against the skin.

3. Extraction head (10) according to the preceding claim, characterized in that the flexible wall is made of silicone.

4. Extraction head (10) according to one of the preceding claims, characterized in that the periphery of the opening comprises a convex shape when the opening is in an enlarged configuration and/or in that the opening comprises a non-convex shape when the opening is in a constricted configuration.

5. Extraction head (10) according to one of the preceding claims, characterized in that the pinching means (18) is configured to vary at least one dimension (D3) of said opening. Extraction head (10) according to the preceding claim, characterized in that said dimension (D3) of the opening (17) is able to vary between a first value between 5mm and 10mm inclusive and a second value, strictly less than the first value, and between 2mm and 5mm inclusive. Extraction head (10) according to one of the preceding claims, characterized in that the pinching means (18) comprises at least one movable element pivotally mounted relative to the housing (16), in particular at least two movable elements pivotally mounted relative to the housing (16), the at least one movable element comprising a first end (24) configured to pinch the skin. Extraction head (10) according to the preceding claim and according to one of claims 2 or 3, characterized in that the first end (24) of the at least one movable element bears on the flexible wall to vary the at least one dimension (D3) of said opening (17). Extraction head (10) according to one of the preceding claims, characterized in that it comprises a removable filter (27) arranged in the suction conduit (19). Apparatus for extracting (2) impurities from the skin, characterized in that it comprises an extraction head (10) according to one of the preceding claims and a handle (1 1) provided with a drive means electric (13) cooperating with said pinching means (18) to pinch the skin. Extraction apparatus (2) according to the preceding claim, characterized in that the handle (1 1) comprises a cam (15) capable of being rotated by the electrical drive means (13), the cam cooperating with said pinching means (18) to pinch the skin. Extraction apparatus (2) according to one of claims 10 or 1 1, characterized in that it is configured to pinch the skin at a first given frequency, in particular a frequency between 1 Hz and 5 Hz. Device for extracting (1) impurities from the skin, characterized in that it comprises an extraction device (2) according to one of claims 10 to 12 and a suction means (5) connected to the conduit d suction (19) of the extraction head (10). Extraction device (1) according to the preceding claim, characterized in that it is configured to vary a depression at the skin level according to a second given frequency, in particular a frequency between 1 Hz and 5 Hz. Extraction device (1) according to the preceding claim, characterized in that it comprises an extraction device (2) according to claim 12, and in that the suction means (5) is synchronized with the means of electric drive (13), in particular in that the first frequency is equal to the second frequency and/or the first frequency is a multiple of the second frequency and/or the second frequency is a multiple of the first frequency. Cosmetic treatment process, characterized in that it comprises:

- bringing the opening (17) of an extraction head (10) into contact against the skin according to one of claims 1 to 9, then simultaneously

- pinching of the skin, and - the creation of a depression in the internal chamber (20) of the extraction head.