WO2006089968A1

WO2006089968A1 - Thermodermal massaging and slimming device and method

Info

Publication number: WO2006089968A1
Application number: PCT/EP2006/060315
Authority: WO
Inventors: Guy Lefebvre
Original assignee: Guy Lefebvre
Priority date: 2005-02-25
Filing date: 2006-02-27
Publication date: 2006-08-31
Also published as: BE1016318A6; EP1861062A1

Abstract

The invention concerns a slimming device comprising at least one cannula for application on or near a person's skin, connected via a pipe to suction and/or blowing means, to produce a massaging effect on the skin, and comprising means for heating the person's dermis and/or hypoderm, further including means for cooling said person's epidermis.

Description

Thermo-dermal massage and thinning device and method

Object of the invention

The present invention relates to a device for massaging the skin, locally increasing the blood circulation, to reduce dermal or hypodermic fat deposits, and to promote cell reconstruction. The present invention also relates to a method of massage and thinning.

Technological background

The skin comprises three superimposed layers, the epidermis, the dermis and the hypodermis. The epidermis is an epithelium comprising different types of cells. The dermis is a connective tissue composed of fibroblasts, collagen fibers and elastic fibers. The dermis contains the blood vessels and nerves of the skin. The hypodermis is a variety of connective tissue, adipose tissue. It is formed of cells very rich in fat, the adipocytes. These are united in lobules and separated by connective partitions.

[0003] Numerous non-invasive methods are known which are suitable for the aesthetic treatment of the skin and promote the reduction of cellulite.

Some massage devices, moving on the body, directly pinch the skin between two rollers and in this way break the greasy chains, performing a conventional massage technique called "feel and roll".

[0005] Invasive methods involving surgical intervention, such as liposuction, are also known. These methods make it possible to remove fatty deposits located in different regions of the body but have various disadvantages such as pain, irregularity of the treated surface and a risk to the health of the patient. [0006] Other invasive methods not involving surgery are also known. These methods are characterized by the subcutaneous injection of a saline solution to obtain a tumescence of the cellulo-adipose tissue. [0007] Infrared radiation treatment is also known.

In addition to its thermal effect which seems to block the lipogenetic action of insulin on α receptors, it also seems to have the property, for wavelengths between 800 and 900 nm, to activate the β-3 adrenergic receptors that favor lipolysis by increasing cAMP (adenosine cyclic mono phosphate). Short wavelength IR radiation, between 630 and 800 nm, has a stimulating effect on collagen production and cell reproduction. Infrared light is captured by blood, water molecules and oxygen. It also produces other effects in dermotherapy. This radiation has a biochemical action on the transit of K and Na ions through cell membranes; it causes increased production of photo products such as prostaglandins, ATP formation and redox stimulation of the main enzymatic systems of biosynthesis. This results in increased permeability of cell membranes and increased metabolic exchange of cells. State of the art

Patent application US 2004/0093047 discloses a system and method for treating the body. This document proposes a treatment of the skin by application of a laser radiation followed by a massage on a surface of the skin for the reduction of the cellulite. This radiation has a predetermined wavelength or is a combination of wavelengths during specified intervals or periods. However, according to this document, the massage is not performed simultaneously and concomitantly with the infrared exposure. In addition, during the proposed treatment, the skin is not cooled, which de facto limits the temperature at which the dermis and hypoderm can be raised without burning the epidermis. In addition, the laser mentioned is not placed on the skin but kept at a distance. US 2004/0077977 discloses a system and method of treatments for the face and the body. This document proposes a suction massage system combined with various types of power sources that can heat the skin. Such sources are typically lasers, infrared, ultraviolet, ultrasound and electromagnetic waves. This document, however, does not associate the simultaneous cooling of the skin to the massage, nor the use of microwaves as a source of power. Also known by J'Vita Spa Line, Vancouver, British Columbia, Canada, http://www.spaline.ca/sil lumicell.html, a non-invasive device allowing the combination of infrared or magenta radiation with a massage sub-dermal type "palpate and roll". This device emits low power radiation and does not have a simultaneous cooling system of the skin to the massage. [0011] The Alice® device of the company is also known.

Biorem, a non-invasive device emitting infrared radiation with multiple biophysical effects. This device however has neither a cooling system nor a mechanical massage device. OBJECTS OF THE INVENTION [0012] The present invention aims to provide a slimming device that allows an effective reduction of fat deposits of a person, which poses no risk to his health, and is easy to use. It should also facilitate cellular reconstruction and be useful in dermotherapy. Summary of the invention

The present invention relates to a thinning device and / or dermotherapy comprising at least one cannula for application on or in the vicinity of the skin of a person, said at least one cannula being connected by a hose to means capable of cyclically varying the pressure of the air inside said cannula, to cause a massage effect on the skin, and comprising means capable of heating the dermis and / or the hypodermis of a person, also comprising means for cooling the epidermis of said person. The means capable of heating the dermis and / or the hypodermis of the person are preferably chosen from means producing infrared rays, light rays, electromagnetic radiations, microwaves or ultrasounds, of a intensity to raise the temperature of the dermis and / or hypodermis to at least 43 ^° C. The infrared rays are preferably in a range between 600 and 1500 nm.

The cooling means of the epidermis of said person advantageously comprise lateral openings in the cannula, allowing air circulation on the skin sufficient to limit the temperature of the epidermis of the person at 4O ⁰ C.

These cooling means may also be an electric Peltier cooling device or cryogenic effect or the sprinkling of a spray of water spray on the part of the epidermis located under the cannula.

The means adapted to vary the pressure of the air inside said cannula may comprise a turbofan, and a pipe, connecting said turbofan to the cannula, in which is inserted a ball valve or ball valve, driven in rotation by a motor. The means capable of varying the pressure may also comprise a piston pump or a diaphragm pump, and a pipe, connecting said pump to the cannula.

In one embodiment of the invention, the means capable of heating the dermis and / or the hypodermis of the person comprise an electric coil producing an electromagnetic field.

The cannula may also be provided with a heating resistor for preheating directly or indirectly the outer surface of the skin in contact with said cannula. The lamp located in the cannula can deliver a portion of the light spectrum, typically blue, UV, yellow or green radiation to treat certain diseases of the skin. The cannula may advantageously have a shape adapted to treat an area of the person, for example to wrap a limb.

The pressure variations induced in the cannula and causing the massage of the skin can be either suction cycles and then return to atmospheric pressure, or suction cycles and overpressure or overpressure cycles and then reset to atmospheric pressure.

The present invention also relates to a method of thinning the skin of a person, wherein, simultaneously, a source of energy is applied to a portion of the skin of said person, to heat the dermis and / or the hypodermis, said portion of the skin is massaged by successively applying phases of aspiration and relaxation of the skin, and cooling said portion of the epidermis of the person.

In the release phases, air can be blown on the portion of the skin of the person, by an overpressure in the cannula.

In this method, one can successively move the field of action, the displacement being performed during a phase of relaxation of the suction.

The method may also include a preheating step.

Brief description of the figures

Figures 1a and 1b are a sectional view of a cannula of a device according to the invention, and a view from below of the same cannula, respectively.

Figure 2 is a block diagram of a first embodiment of a device according to the invention.

Figure 3 is a block diagram of a second embodiment of a device according to the invention.

Figure 4 is a block diagram of a third embodiment of a device according to the invention. Figure 5 is a block diagram of a fourth embodiment of a device according to the invention.

Figure 6 is a block diagram of another cannula of a device according to the invention. Figures 7a and 7b are a block diagram of another embodiment of a cannula of a device according to the invention, seen laterally, and from below, respectively.

Figure 8 is a block diagram of another embodiment of a cannula according to the invention. Figures 9a and 9b are a schematic representation of a variant of a cannula according to the invention respectively in side section and in section eue below, and its use. DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT OF THE INVENTION FIG. 1 is a sectional view of a cannula 10 of a device according to the invention in which a lamp 11 is installed so as to enable its periphery a free passage of air between a pipe 9 connected to the upper part of this cannula 10 and the inner space 30 of said cannula 10, without excessive pressure drop. 21 passing channels allow the flow of air between the inner space 30 of the cannula 10 and the surrounding air. These air passage channels are arranged at the lower part of the cannula 10 so as to allow a circulation of cooling air to the surface of the skin as a function of the depression or the overpressure prevailing in the interior space 30. The lamp 11 is installed in the interior space 30 of the cannula 10 and directs its radiation to the skin of the person, by means of a reflector. This lamp is preferably a lamp emitting in the near infrared, this radiation range having the property of penetrating deeper to reach the hypoderm of the person and to be absorbed by the adipocytes. In addition infrared activates β receptors, thus promoting lipolysis. By raising the temperature of the dermis and / or the hypodermis of the person, they deactivate the α receptors. This effect is marked for temperatures of 43 ⁰ C or higher. To produce these effects, the power of this lamp is preferably 50 W, and can go up to 100 W and more. In order to adapt the power of the lamp according to the circumstances, an adjustment potentiometer allows to select this power between 0 and 100% of the maximum value. To treat surfaces of the order of 25 cm 2, that is to say by means of a cannula of internal diameter of about 5 cm, a power of the 5OW infrared lamp is appropriate. The lower part 31 of the cannula makes it possible to ensure a close, air-tight contact between the cannula and the skin, excluding the cooling channels 21.

Figure 2 is a block diagram of a first embodiment of a device according to the invention wherein the cannula 10 is depressed and then at atmospheric pressure. The inside 30 of the cannula 10 is connected to a suction machine 1, for example a turbine, by means of a flexible hose 9. This hose 9 comprises, between the cannula 10 and the suction machine 1, a T-connector, to which a portion of pipe is connected. In this portion of pipe, is installed a valve 2. This valve 2 consists of a ball or a plug with a hole, and allows or prevents the passage of air depending on its position. A motor 3 rotates the ball or plug, periodically putting the inside of the pipe 9 at atmospheric pressure. The succession of depressions and atmospheric pressure shifts in the interior space of the cannula 10 in contact with the skin causes a massage of the skin. The motor 3 rotates at an adjustable speed of between 10 and 60 revolutions per minute, which causes a cyclic variation of the pressure inside the cannula at a selectable frequency between 20 and 120 cycles / minute. The preferred frequency of use is 60 cycles / minute. Figure 3 is a block diagram of a second embodiment of a device according to the invention wherein the cannula 10 is depressed and then at atmospheric pressure. The cannula 10 is connected to a suction machine 1 by means of a flexible hose 9. A valve 2 is also constituted by a ball or a plug with a hole, and allows or prevents the passage of the depending on its position. A motor 3 turns the ball or the bushel. A venting device 4 comprises a spring 5 and a sealing ball 6 and venting vents 7a. When the cannula is in depression, the ball 6 is applied to its seat 8, and ensures airtightness. When the valve 2 is in the closed position, the air enters the cannula 10 through the openings 21 and 7b, and the spring 5 moves the ball 6 away from its seat 8, thereby causing air to enter via the vents 7a, and a sudden bursting of the interior of the cannula 10 with atmospheric pressure. In this embodiment, the atmospheric pressure is brought to the inside of the pipe 9 in a brutal manner and thus causes a more energetic massage of the skin. .

Figure 4 is a block diagram of a third embodiment of a device according to the invention wherein the cannula 10 is depressed and then at atmospheric pressure. The cannula 10 is connected to a suction machine 1 by means of a flexible hose 9. A valve 2a and a second valve 2b, mounted on the same axis, both consist of a ball or a drilled bushel of a hole, and arranged in phase opposition between them. Figure 4 schematically shows the valve plug 2a in a blocking direction, and the plug of the valve 2b in the forward direction. A motor 3 simultaneously rotates the ball or the plug of each of the two valves 2a and 2b. When the valve 2a is in the closed position, the air enters the cannula 10 through the second valve 2b which is synchronously in the passing position, causing the pressure of the interior of the cannula 10 to be put under atmospheric pressure. realization, the atmospheric pressure of the inside of the pipe 9 is carried out similarly to the embodiment of Figure 2, but in addition, the suction machine is isolated by the valve 2a during this phase. The succession of depressions and atmospheric pressures in the interior space of the cannula 10 in contact with the skin causes a massage of the skin.

Figure 5 is a block diagram of a fourth embodiment of a device according to the invention wherein the cannula 10 is depressurized and overpressurized. The cannula 10 is connected to a suction machine 1 by means of a flexible hose 9. A valve 2a and a second valve 2b, in phase opposition with each other, also consist of a pierced ball or bushel a hole. Said second valve 2b is connected to the discharge of the vacuum cleaner 1. A motor 3 rotates simultaneously the ball or the plug of each of the valves 2a and 2b. When the valve 2a is in the closed position, the pressurized air enters the cannula 10 through the second valve 2b which is at this moment in the conducting position, causing an overpressure in the interior 30 of the cannula 10 and a blowing effect on the skin. Then the cycle is reversed: the valve 2a opens and the valve 2b closes, causing a depression in the interior 30 of the cannula 10. In this embodiment, a small vent 7c can be placed between the valve 2a and the inlet of the vacuum cleaner 1 in order to renew the air circulating in the pipe 9 and to avoid excessive heating of the suction machine 1. This function can also be provided by a vacuum breaker placed in place of the vent 7c, which opens and admits air as soon as the depression exceeds a predetermined threshold. Similarly, a pressure relief valve can be placed upstream of the suction machine between the discharge and the valve 2b. The succession of depressions and overpressures in the interior space of the cannula 10 in contact with the skin causes a massage of the skin of the person. In addition, during the overpressure phases the cannula will tend to peel off the skin which facilitates its movement and additional air circulation that escapes causes improved cooling of the skin. The suction machine 1, shown in FIGS. 2, 3, 4 and

5 can be a turbine or a compressor-type vane pump. A turbofan with a power of 1500 W achieves a vacuum of 25 kPa, and a nominal air flow of 38 l / min and has a sufficient flow to treat a large area of 500 cm2 or more without having to move the canula 25 cm in diameter. The suction machine 1, shown in Figures 2, 3 and 4 may also be a piston or membrane machine. In the case of the use of a piston or diaphragm machine as a suction machine 1, it is possible to dispense with the use of the valves 2a and 2b and the motor 3 of the circuits described above. Indeed, in this case, it suffices to connect the piston pump or membrane to the cannula 10, by a simple pipe 9.

FIG. 6 is a block diagram of another embodiment of a device according to the invention in which the cannula 10 is connected. by means of a flexible hose 9 to a microwave source 27 located between said cannula 10 and the vacuum cleaner 1. This microwave source typically produces electromagnetic waves of 2500 MHz. The air sucked by the vacuum cleaner 1 passes through the microwave source 27. The walls of this microwave source 27 and the pipe 9 are coated with a wire mesh or metal paint 28 in order to reflect, guide and to diffuse the flow of microwaves 29 only on the skin, causing a deep heating of the dermis and hypodermis of the person. This embodiment of the heating of the dermis and hypodermis may be used alone or in conjunction with heating by the lamp 11.

Figure 7 is a block diagram of another embodiment of a cannula 10 connected to a pipe 9 according to the invention in which a lamp 11 providing red light and infrared or any other type of light is located in the cannula 10. An electric coil 13 is disposed around this cannula 10, for injecting into the skin an electromagnetic field to increase the temperature of the dermis and hypodermis in depth or to treat certain types cell reconstruction among other bone. The coil 13 is supplied with alternating current of variable frequency, from 5 Hz to 10 MHz. Its winding and its shape will vary according to the frequency of emission. This cannula 10 may comprise electrical contacts 12 placed in contact with the skin, making it possible to send electrical pulses and thus to stimulate the muscles located under the cannula 10 in contact with the skin of the patient. Electrical stimulation pulses are preferably sent synchronously during the suction phases, that is to say when the skin is sucked into the interior of the cannula. As in the other embodiments, channels 21 allow the passage of cooling air. This last embodiment of the cannula 10 is intended in particular for the treatment of asthma and the stimulation of bone reconstitution. The coil 13 can also be used for the production of ultrasound to heat the dermis and / or hypodermis, and to release adhesions in the treated areas. The lower portion 31 of the cannula 10 in contact with the skin may be provided with a Peltier or cryogenic cooling system. The cooling of the epidermis heated by the lamp is effected then by contact when moving the cannula on the skin. Spray 32 of water can also be made on the epidermis located under the cannula. In this case, the cooling of the epidermis is achieved by evaporation of this water. Figure 8 is a block diagram of another embodiment of a cannula according to the invention wherein around the cannula 10 is inserted a first heating sleeve 19 covered with a second thermal insulation sleeve 20 and an electric coil 13 which, similarly to the embodiment of Figure 7, provides an electromagnetic field to increase the temperature of the dermis and the hypodermis. The tip of the cannula 10 is provided with vents 21 allowing air entry and thus cooling of the epidermis of the patient. In this cannula 10, the massage effect is obtained, not directly by the action of air, but by the following mechanism: The cannula 10 has a cylindrical portion. A piston 14 is inserted into the cannula 10, conforming to the inner shape of said cannula 10 and being free to move therein. A return spring 15 is located in the cannula 10 having one of its ends fixed on the cannula 10 and the other end pressed on the piston 14. When the vacuum is created in the pipe 9, the vacuum created causes the piston 14 which it compresses the spring 15. When the venting or overpressure cycle arrives, the piston 14, pushed by the spring 15, quickly returns to the outlet of the cannula 10 by expelling the air through the vents 21 , and stops on the shoulder 17 serving as a stop and located at the end of the cannula 10. On the piston 14 is fixed a tool 18 adapted to hit or massage the skin performing a powerful mechanical massage and heating of the skin by the contact of the tool 18, preheated as the piston, in the heating sleeve 19.

[0046] Figure 9 shows a special cannula sealingly enclosing a limb, for example a leg. Multiple lamps radiate the inner surface to warm the dermis and hypodermis. We find there, distributed at the periphery, the small channels of cooling by air circulation 21. The pressure variations which are induced in the interior space of the cannula cause a massage of the limb. Partitions Special peripherals 33 made of elastic materials or foam may be provided for this massage to be carried out gradually zone by zone in order to drain the blood and the lymph of this limb in a precise direction. The cannula of Figure 9 is representative of all variants of cannula shapes adapted to treat a particular portion of a person, for example, the arm, elbow, etc.

Other means of heating the dermis or hypodermis can be used in the cannulas of the invention. The coils 13 of the cannulas of FIGS. 7 and 8 may be replaced by an ultrasound source. Ultrasound frequencies in the 1 to 5 MHz range cause the desired thermal effects. By using ultrasound of lower frequency, ie from 28 to 32 kHz, one defibroses, one releases the adhesions, one disaggregates mainly the accumulated adipocytes in fatty nodules and the macromolecules, and one improves the permeability of the cell membranes. The device of the invention is used by applying the cannula on the skin of a person, then by simultaneously acting the suction cycle and relaxation, and the radiation heating means. The intensity of the radiation, as well as that of the aspiration, and the frequency of the cycle are regulated according to the desired effects and the tolerance of the person. The simultaneous use of the heating of the dermis and / or the hypodermis, and the cooling of the epidermis by the circulation of the air, makes it possible to reach high temperatures in depth without damaging the epidermis. The blood circulation in the vessels located in the dermis contributes to the evacuation of heat. When the skin is sucked into the interior of the cannula it partially fills it. The cannula is thus fixed to the skin by suction effect, without the possibility of movement. When the suction is cut off by the valve 2, the air continues to enter the interior of the cannula through the cooling channels 21, immediately removing the suction effect and thus facilitating the displacement of the cannula from a point of contact. treatment to another. By using a frequency of 60 pulses per minute, and a displacement of 30 cm per minute, satisfactory results are obtained. It is advantageous to apply a preheating of the skin by any other means such as by an infrared lamp or by simple contact with a hot cloth before the start of the actual treatment.

The device and the method according to the invention can heat the deep layers of the dermis and the hypodermis, at high temperatures, above 43 ⁰ C, and even above 50 ^° C., while maintaining the superficial layers, that is to say the epidermis, at temperatures equal to or lower than 40 ^° C. It allows concomitantly injecting into the dermis several sources of radiation while performing an effective massage. This device and this method promote the reconstitution of cells and in particular collagen.

The continuous massage of the skin during the entire treatment is important because the increase in blood flow that it involves in the dermis allows the latter to cool while the hypoderm containing the fat cells rises in temperature. This massage has the effect of defibrosing the adipocytes of the hypodermis and to unlock the adhesions while firming the elastic and collagen fibers in the dermis. Clinical trials were performed on a sample of 25 people with localized lypodistrophy. Five days of treatment were applied for one 40-minute session per day. The setting of the power of the suction and the infrared source has been adapted according to the sensitivity of each person. Fat loss, measured by reduction of waist circumference or thigh, was studied. The treatment was performed on 25 patients with an average weight of 63.4 kg, a total fat percentage of 30% and a mean age of 41 years. The following results were observed:

• Reduction in waist circumference, in cm: 5, 2, 8, 6, 4, 7, 2, 3 2, 2, 0, 0, 3,

• Reduction of thigh circumference, in cm: 1.5, 1.5, 2.75, 1.5, 4, 2.5, 1.5, 1, 3, 1, 1, 0.5.

Four people were seen two weeks after treatment. The result obtained was stable. An improvement in the appearance of the skin has been observed. In addition to its slimming action, the conditions that the system can handle are, but not limited to, the following: Treatment of pain syndrome (joints, lumbar pain, migraine, skin, fibromyalgia, spine, ...), chronic pain syndrome (hip, shoulders, inflamed or infected muscles, ...), skin and wounds (acne cellulite, burns, eczema, open wounds ...) anti-aging and cosmetics (anti-aging, varicose veins, wrinkles, colored spots ...). Favorable results have been observed in improving the appearance of scars.

Claims

1. Thinning and / or dermotherapy device comprising at least one cannula (10) for application on or near the skin of a person, said at least one cannula (10) being connected by a hose (9) to means adapted to vary the pressure (1; 2; 2a; 2b; 3; 9) of the air inside (30) of said cannula (10) to cause a massage effect on the skin, and comprising means capable of heating (11; 13; 19; 27) the dermis and / or the hypoderm of a person, characterized in that it comprises cooling means (21; 32; 12) of the epidermis of said person.

2. Device according to claim 1 characterized in that the means capable of heating (11; 13; 19; 27) the dermis and / or the hypodermis of the person are selected from the means producing infrared rays (11), light radiation (11), electromagnetic radiation (13), microwaves (27) or ultrasound (13), of an intensity making it possible to raise the temperature of the dermis and / or hypodermis to at least 43 ⁰ C.

3. Device according to claim 2 characterized in that the means producing infrared rays (11) emit a spectrum between 600 and 1500 nm.

4. Device according to any one of the preceding claims, characterized in that the cooling means (21; 32; 12) of the epidermis of said person comprise lateral openings (21) in the cannula (10), allowing circulation. air on the skin sufficient to limit the temperature of the epidermis of the person at 40 ^° C.

5. Device according to any one of the preceding claims, characterized in that the cooling means (21; 32; 12) of the epidermis of said person comprise an electric cooling device Peltier effect (12) or by cryogenic effect.

6. Device according to any one of the preceding claims, characterized in that the cooling means (21; 32; 12) of the epidermis of said person comprise means for spraying (32) a spray of water spray on the part of the epidermis located under the cannula.

7. Device according to any one of the preceding claims, characterized in that the means adapted to vary the pressure of the air inside said cannula comprise a turbofan, and a pipe, connecting said turbofan to the cannula, in which is inserted a ball valve or ball valve, driven in rotation by a motor.

8. Device according to any one of the preceding claims characterized in that the means adapted to vary the pressure of the air inside said cannula comprise a piston pump or a diaphragm pump, and a pipe, connecting said pump to the cannula.

9. Device according to claim 1 characterized in that the means adapted to heat the dermis and / or the hypodermis of the person comprise an electric coil producing an electromagnetic field.

10, Device according to claim 1 characterized by the fat that the cannula can be provided with a heating resistor for preheating directly or indirectly the outer surface of the skin in contact with said cannula.

11. Device according to claim 1 characterized in that the lamp located in the cannula can deliver a portion of the light spectrum typically blue, or UV, yellow or green radiation to treat certain diseases of the skin.

12, Device according to any one of the preceding claims characterized in that the cannula has a shape adapted to treat an area of the person.

13 »Device according to claim 12 characterized in that the cannula has a shape adapted to wrap a member.

14, Device according to any one of the preceding claims characterized in that the pressure variations induced in the cannula and causing the massage of the skin can be either suction cycles and then atmospheric pressure, or cycles of suction and overpressure, or cycles of overpressure and return to atmospheric pressure. 15. A method of thinning the skin of a person, characterized in that, simultaneously, - a source of energy is applied to a portion of the skin of said person, to heat the dermis and / or the hypodermis ,

the said portion of the skin is massaged by successively applying phases of aspiration and relaxation of the skin.

- the said portion of the epidermis of the person is cooled. 16 »The method of claim 15 characterized in that, in the release phases, air is blown on the portion of the skin of the person.

17, Process according to any one of claims 15 or 16, characterized in that successively moves the field of action of the method, the displacement being performed during a release phase of the suction.

18, thinning process according to any one of claims 15 to 17 characterized in that it comprises a preheating step.