FR2845885A1 - Micro-abrasion machine for beauty saloon, has cartridge with reservoir holding powder to be applied on surface and another reservoir to collect used powder, where former reservoir has transversal section tapering towards lower side - Google Patents

Abstract

The machine has a hand piece receiving a cartridge (5) including a reservoir containing a powder to be applied on a surface to be treated and another reservoir to collect the used powder. The reservoirs have a common shell and the former reservoir has a lateral aperture to enable the powder to enter a tube. The former reservoir has a transversal section along its longitudinal axis, which tapers towards the lower side.

Description

The present invention relates to micro-abrasion devices by

projection

  abrasive particles carried by air circulation on the skin.

  These devices are widely used in beauty salons to alleviate

  skin defects and / or scrubs.

  Micro-abrasion devices are known which comprise two reservoirs, one containing the unused powder and the other being intended to receive the powder after spraying onto the support to be treated. These two tanks are constituted by independent jars each provided with a lid which can be easily removed in order to

  allow the used powder to be removed and the device to be supplied with new powder.

  There is a need to facilitate the introduction of new powder and the evacuation

used powder.

  There is also a need to lower the cost price of

  micro-abrasion, to allow their distribution to the general public.

  There is still a need to prevent re-use of used powder, which is undesirable for hygienic conditions.

  The invention aims to meet all or part of the aforementioned needs.

  It achieves this thanks to a micro-abrasion device comprising: - a first reservoir intended to contain a powder to be sprayed onto a surface to be treated, - a second reservoir intended to collect the used powder, - a handpiece arranged to be applied against the surface to be treated, this apparatus being able to be characterized by the fact that it comprises a removable cartridge, which can be placed on the apparatus and withdrawn from it independently of the handpiece and

  comprising the first and second reservoirs.

  Thus, a used cartridge can easily be replaced by a new one.

  cartridge before proceeding with a new treatment.

  The first and second reservoirs can be connected to each other non-detachably within the cartridge. In particular, the first and second tanks

  can form two compartments within a body of the cartridge.

  The first and second tanks can be placed side by side within the

cartridge, or otherwise arranged.

  The first and second tanks can have a common wall, which

  can simplify the manufacture of the cartridge.

  The first reservoir may have a cross section to the longitudinal axis of the reservoir which decreases downwards, which can make it possible to reduce the quantity of powder remaining in the reservoir when it is considered to be empty. The first reservoir may include a collection tube, which can be opened at its upper end and have a lateral orifice allowing the powder

to enter the tube.

  The sampling tube can be entirely integral with the associated reservoir. The tube can extend for example over practically the entire height of the tank, the end

  open can be located a short distance from the top wall of the tank.

  The apparatus may also include a sampling tube which has an upper part secured to the reservoir and a lower part, comprising the sampling orifice, which can be detached from the reservoir. This lower part may be formed, for example, by a tip of the base station, arranged to penetrate the

  tank when it is in place.

  The cartridge may include a means for closing a nozzle for connecting the first reservoir to a tube for withdrawing the powder contained therein. The device may include a base station configured to receive the cartridge. This base station can be provided with a keying device preventing

  put the cartridge in place other than in a determined position.

  Alternatively, the handpiece can be arranged to receive the cartridge.

  The cartridge may for example comprise female end pieces communicating respectively with tubes extending inside the first and second reservoirs, these female end pieces being configured to engage on corresponding male end pieces of the device in a substantially sealed manner. , when the cartridge is in place on the device.

  The cartridge may comprise a body produced by plastic molding 30 and a closure cover attached to the body.

  Another subject of the invention is, according to another of its aspects, a cartridge capable of being used in an apparatus as defined above, comprising a first reservoir containing a powder to be sprayed onto a surface to be treated and a second

  reservoir intended to receive the used powder.

  Another subject of the invention is a micro-abrasion device which comprises a reservoir intended to receive a powder to be sprayed onto a surface to be treated, a sampling tube in this reservoir, this sampling tube being provided with at least one orifice for collecting the powder, this device being able to be characterized, according to one aspect of the invention, by the fact that the reservoir has on an side wall an air intake which is arranged so that the air entering through this in the tank tends to

  oppose the clogging, by the powder, of the sampling orifice.

  This allows the powder to be mixed with air near the orifice of

  which reduces the risk of clogging.

  This also improves reliability, decreases the cost of

  the device and to facilitate its use by inexperienced persons.

  In an exemplary implementation of the invention, the air intake is produced in the vicinity of the sampling orifice, in particular at a level substantially lower than the latter. The sampling orifice may open laterally into the tank, being by

  example constituted by a drilling, directed radially, of the sampling tube.

  In an exemplary implementation of the invention, the air intake comprises at least one orifice made in the side wall of the reservoir and whose section is small enough to prevent the exit of the powder through the orifice. Alternatively or additionally, the air intake may include a filter allowing the passage of air

  but preventing the powder contained in the reservoir from coming out.

  The air intake can for example be produced in the form of a plurality

  orifices made in the side wall of the tank.

  As mentioned above, the tank can be made with an inner section transverse to the longitudinal axis of the tank, which decreases downwards. This reduction in cross section can reduce the risk of clogging by

  reducing the distance between the air intake and the sampling port.

  The lower part of the tank can be made, for example, at least partially with a wall whose inner surface is a portion of quadric,

  in particular a portion of cone, ellipsode or paraboloid, converging downwards.

  The lower part of the tank can also be defined at least partially by a

  polyhedral interior surface, converging downwards.

  The lower part of the tank may have an interior surface whose inclination, with respect to the longitudinal axis of the tank, is for example comprised at at least one point between 20 and 45. The subject of the invention is also, independently of the above, a cartridge for a micro-abrasion device, this cartridge comprising a first reservoir containing a powder to be sprayed onto the skin and a second reservoir for receiving the particles of used powder, the first reservoir comprising a sampling tube which is either provided with at least one powder sampling orifice, or arranged to receive a nozzle having a sampling orifice, the first reservoir comprising an air intake arranged so as to what air entering through it into the

  tank tends to oppose clogging of the sampling orifice.

  The invention also relates, independently of the foregoing, to a cartridge for a micro-abrasion device, which comprises a reservoir containing the powder to be sprayed onto the skin, this reservoir having a cross section on the axis

  longitudinal of the tank which decreases downwards.

  The invention will be better understood on reading the detailed description

  which follows, non-limiting examples of implementation, and on examining the appended drawing, in which: - Figure 1 is a schematic perspective view of a microabrasion device according to an example of implementation of the invention, - Figure 2 is a block diagram of the device of Figure 1, - Figure 3 shows in isolation, in perspective, the cartridge used in the device of Figure 1, - the FIG. 4 illustrates the closure of a tip of the cartridge by means of a cover, - FIG. 5 is a schematic longitudinal section along VV of FIG. 3, - FIG. 6 is a schematic longitudinal section according to VI-VI of the Figure 3, - Figure 7 is a schematic longitudinal section along VII-VII of Figure 3, - Figure 8 shows, schematically and partially, in top view, the cartridge receiving opening, - Figure 9 shows, in top view and schematically and partially, another example the opening shape for receiving a cartridge, - Figure 10 shows in perspective the handpiece, - Figure 11 shows in isolation one of the two shells of the handpiece of Figure 10, - Figure 12 represents in axial section, diagrammatically, the end piece of the handpiece of FIG. 10, - FIG. 13 represents, in isolation, in top view and in diagrammatic form, a pump that can be used in the device in Figure 1, - Figure 14 shows schematically, in side view, a filter 15 can be used in the device of Figure 1, Figure 15 shows in perspective, schematically, a variant of device produced in accordance with the invention, - Figure 16 illustrates the possibility of making the handpiece with a removable head, - Figure 17 shows schematically, a case comprising a micro-abrasion device according to the invention, - the figure 18 schematically represents a kit incorporating a micro-abrasion device in accordance with the invention, FIG. 19 schematically represents a bathroom shelf 25 equipped with a micro-abrasion device in accordance with the invention, - Figure 20 shows schematically another example of implementation of the invention, - Figure 21 illustrates the production of a tube in one piece with the tank body, and - Figure 22 is a section schematic longitudinal representation of a cartridge variant with a sampling nozzle engaged inside the tank

containing the new powder.

  FIG. 1 shows a micro-abrasion device 1 according to a

  example of implementation of the invention.

  This device 1 comprises, in the example considered, a base station 2 and a

  handpiece 3 connected to the base station 2 by a hose 4.

  The base station 2 is arranged to receive a cartridge 5 and includes a

opening 6 for this purpose.

  We will now describe, with reference to FIG. 2, the operating principle of the device 1, which also applies to the other embodiments

described later.

  The cartridge 5 comprises a reservoir 10 containing an unused abrasive powder P, for example between 30 and 70 cm 3 of powder, for example of the order of 50 cm 3 of powder, and a reservoir 11 for receiving the used powder U. The powder P is routed to handpiece 3 using a conduit

  supply 12 and the used powder U is returned to the reservoir 11 from the handpiece 15 3 by means of a return duct 13.

  A vacuum pump 15 is connected to a suction pipe 16 which is connected to

  a suction tube 19 opening into the reservoir 11 through an inlet filter 17.

  A second filter 18 is placed upstream of the pump 15 to more finely filter the air sucked into the duct 16. This second filter 18 could, if necessary, be eliminated provided that an adequate inlet filter 17 is used .

  A sampling tube 20 extends over practically the entire height of the reservoir 10 and has an open upper end 21 and towards the bottom of the reservoir a lateral orifice 22 serving for the sampling 22 of the powder P. An air intake 24 is produced in the wall of the reservoir 10, being arranged so as to reduce the risk of clogging of the lateral orifice 22, as will be specified

further.

  The return duct 13 opens into the interior of the tank 11 through a return tube 26 having an upper end 27 opening into the upper part of the

  reservoir i1, at a level preferably lower than that of the inlet filter 17. The operation of the device 1 is as follows.

  When the pump 15 is running, air is sucked in by the inlet filter 17 which creates a vacuum in the reservoir 11 of used powder U which causes a

  air intake through the return duct 13.

  The supply 12 and return 13 ducts communicate with a chamber 79 5 of the handpiece 3 which opens to the outside via an opening 30, the latter being closed during use when the handpiece 3 is applied against the surface to be treated.

  In the absence of use of the handpiece 3, the opening 30 communicates with the atmosphere and the supply duct 12 is at atmospheric pressure, so that

  the powder P is not taken from the reservoir 10.

  When using the handpiece 3, the vacuum created by the pump 15 in the reservoir 11 is transmitted through the return duct 13 to the chamber 79 of the handpiece 3, which creates a vacuum in the supply duct 12 and the air suction through the opening 21 of the sampling tube 20. The air sucked into the reservoir 10 is compensated by an air intake by the air intake 24. The powder P is sampled by the sampling orifice 15, being entrained by the air circulating in the supply duct 12 until the opening 30 where it is projected onto the surface to be treated. The particles, after rebound on the

  treated surface, are sucked back through the return pipe 13 into the tank 1 1.

  The device 1 has the advantage that the powder P is not projected towards the opening 30 in the absence of sufficiently close contact between the handpiece 3 and the surface to be treated to cut the chamber 79 from the outside. and allow circulation

  air to settle between the tanks 10 and i1.

  The base station 2 may include, as shown, a switch 31 for

  on / off, an operating light 32 and, if necessary, a button for adjusting the power of the pump 15, this button controlling for example an electronic device 25 making it possible to turn the motor of the pump 15 more or less quickly.

  The base station 2 can also include a support 34 on which the part

  hand 3 can be hung when not in use.

  The base station 2 can operate independently, on batteries, or with a

  accumulator and possibly include a transformer to allow it to be connected to the mains.

  We will now describe more precisely, with reference to FIGS. 3 to 7, a

example of cartridge 5.

  In the example considered, the cartridge 5 comprises a body 40 which can be manufactured by molding of plastic material, in particular of a polyolefin, being produced as can be seen in FIG. 6 with a vertical partition 41 defining two compartments at the inside the body 40, these compartments corresponding respectively to the above-mentioned reservoirs 10 and 11. The reservoir 10 is delimited by a part 43 of the body 40 which has an upper portion 43a substantially semi-cylindrical and a lower portion 43b converging downwards. The reservoir 11 is delimited by a part 44 of the body 40 which is substantially semi-cylindrical over its entire height. The slope D of the lower portion 43b 10 is chosen as a function of the ease of flow of the powder P, in particular of its tendency to stick to the wall of the reservoir 10. The slope P can be understood for example, at

  level of the air intake 24 in particular, between 200 and 300.

  In the example illustrated, the body 40 is produced with a bottom wall 48 which has three openings for the passage of the tubes 19, 20 and 26 respectively. These tubes 15 are for example fixed by welding, snap-fastening or gluing on the wall of bottom 48 and have, at their lower end, respective female end pieces 19a, 20a and 26a which come to bear against the bottom wall 48 each by a shoulder. The tubes could also be made in one piece with the body of the tank, for example by

  material molding, as illustrated in figure 21.

  The cartridge 5 comprises a closure cover 49 fixed to the body 40 by

  example by snap-fastening, welding or gluing.

  This cover 49 includes sealing skirts 50 and 52 making it possible to close from

  substantially hermetically sealed tanks 10 and 11 in the upper part.

  Preferably, the cartridge 5 is made so as not to allow an untooled user to access the contents of the reservoirs, so as to prevent the

  used powder U is not reused.

  The quantity of powder P contained in the cartridge 5 may be suitable for a

  single treatment session, for example.

  Before the first use, the end piece 20a of the sampling tube 20 can be closed as illustrated in FIG. 4 by means of a removable or perforable cover 54 or by any other closing means such as for example a cap. A seal

  removable not shown may also be present on the body 40 to close the air intake 24 and prevent moisture from entering the tank 10 before the first use.

  It can be seen in FIGS. 3 and 6 in particular that the air intake 24 can be produced

  in the form of at least one orifice 53, in particular of a plurality of orifices 53, the cross section of which is chosen to be small enough to prevent the exit of the powder particles P while allowing the entry of air into the reservoir 10 .

  In the example considered, the air intake 24 has five orifices 53, these together offering an air passage section which can be between 0.5 and 2 mm2

  for example, in particular to be approximately 1 mm2.

  The air intake 24 is advantageously located below the level of the lateral orifice 22 of the sampling tube 20, in order to allow, during operation of the apparatus, the air which enters through the air intake 24 into the reservoir 10 of brewing the powder by an upward movement in the vicinity of the orifice 22 and of reducing the risk of clogging thereof. At least a fraction of the air which enters through the air intake 24 can also reach the orifice 22 and facilitate the penetration of the powder particles P into the tube 20. The volume proportion of the solid particles in the air which is projected onto the treated surface is for example less than 10%, or even less than 5%, for example

close to 3%.

  FIG. 8 shows, in top view, the opening 6 of the housing of the base station 2 intended to receive the cartridge 5.

  It can be seen in this figure that male ends 62, 63 and 64 are present in the bottom of this housing to cooperate respectively, in a substantially sealed manner, with the female ends 20a, 26a and 19a of the cartridge 5, in order to make

  communicate the tubes 20, 26 and 19 with the conduits 12, 13, 16 respectively.

  The arrangement of the ends 22a, 26a and l9a is advantageously chosen so as to constitute a polarizing means ensuring that the cartridge 5 cannot

  be fixed in its housing only in a determined position.

  In a variant implementation of the invention, this polarization can be obtained not thanks to a particular arrangement of the end pieces 62, 63 and 64 but by giving the opening 6 a contour having no axial symmetry, for example with a truncated side as illustrated in FIG. 9, the body 40 of the cartridge 5 having an outer section of corresponding shape. In FIG. 9, the ends 62, 63 and 64 have not been

  shown, for the sake of clarity of the drawing.

  The male endpiece 62, intended to engage in the female endpiece 20a associated with the reservoir 10, can be configured to pierce the seal 54 mentioned above, when the cartridge 5 is placed on the device 1 .

  We will now describe, with reference to FIGS. 10 to 12, the handpiece 3.

  This comprises a gripping part 70, produced by assembling two shells 71, one of which is shown in isolation in FIG. 11, and an end piece 72 which is shown

  in isolation in Figure 12, in axial section.

  The axis X of the opening 30 makes an angle ax between 100 and 1500 with the longitudinal axis Y of the gripping part 70, which contributes to the ergonomics of the part to be

hand 3.

  The end piece 72 includes a mounting skirt 73 which allows it to be fixed on a neck 74 also of axis X, formed by the assembly of two halves each made with a shell 71. The skirt 73 is connected to a wall 75 of the tip which converges towards

of the opening 30.

  A partition 76 produced in one piece with the rest of the end piece 72 by plastic molding separates, within the end piece 72, return channels 77 and

  inlet 78 which open through respective orifices 77a and 78a in the chamber 79.

  The channels 77 and 78 are arranged, on the side opposite to the orifices 77a and 78a, to allow the fixing of the flexible pipes of the flexible 4 which correspond to the conduits 12 and 13. The cross section of the channels 77 and 78 decreases in proximity to the

  chamber 79, due to the shape of the wall 75 and also to the fact that the partition 76 has a thickness which increases in proximity to the chamber 79.

  The bottom 80 of the chamber 79, into which the orifices 78a and 77a open, extends obliquely with respect to the axis X, the orifice 77a being further from the opening 30

  than the orifice 78a and having a larger section.

  The chamber 79 has a side wall 81 which in the example considered is cylindrical of revolution of axis X. The section of the orifice 78a, smaller than that of the orifice 77a, makes it possible to project the particles onto the skin with relatively high speed; the section of the orifice 77a, which is wider, facilitates the return of the particles in the return duct 13. The section of the supply channel 78 is reduced, for example between the opening used for fixing the flexible pipe and the orifice 78a of a factor of between two and ten within the end piece,

including at least five.

  The relative position of the channels 77 and 78, offset on either side of the X axis of the opening 30, as well as their orientation towards the center thereof, facilitates the rebound of the

  particles to the return channel 77.

  There is thus obtained a nozzle 72 which can be produced at a relatively low cost.

  low while offering high efficiency, which makes it possible to use a pump 15 of lower power if desired, while maintaining a satisfactory result.

  The distance d between a point located at the center of the end of the partition 76 coinciding with the bottom 80 of the chamber 79 and the plane of the opening 30 may for example be less than 2.75 mm, being in the example considered close to 2.5 mm, which makes it possible to leave a relatively large amount of powder on the skin and to allow the user to visualize the passage of the handpiece. For a volume of powder used of 50 cm3, it may for example remain on the skin more than 5% of powder, the volume of used powder U which is returned to the device being for example 47 cm3

  when the powder container P is empty.

  FIG. 13 shows, in isolation, an example of a pump 15 which can be used in the device 1.

  The pump 15 is in the example considered known in itself, of the membrane type being driven by an electric motor 90 connected by an eccentric 91 to a rod 92 integral with the membrane 93, the rod 92 being produced in one piece of material

elastomer therewith.

  The pump 15 comprises an inlet nozzle 94 for the connection of the suction duct 16 and a discharge nozzle equipped with a section reducer 95 in order to

  reduce operating noise.

  When the electric motor 90 rotates, the rod 92 performs oscillations

  in a direction generally perpendicular to the plane of FIG. 13, which actuates the membrane 93.

  In the example considered, the flow rate of the pump is for example one liter

approximately per minute.

  FIG. 14 shows an example of a filter 18. The latter comprises a box 96 provided with inlet tips 97 and outlet 98 and inside this box a filter bag 99 whose wall is pleated. The nozzle 97 is connected to the conduit 16 downstream of the filter 18. Of course, the invention is not limited to the example which has just been described. In particular, the micro-abrasion device can be produced as illustrated in FIG. 15 so as to allow the cartridge 5 to be fixed on the handpiece 3, the latter being able to integrate the pump 15 and the filter 18 as well as possibly a source

of electrical energy.

  The cartridge 5 can in particular be received in a housing of the handpiece

  3 emerging at the end opposite to the end piece 72.

  Alternatively, it is also possible to connect the handpiece 3 to a base station 2 comprising the pump 15 and the filter 18 while allowing the cartridge 5 to be fixed on the

handpiece.

  It is also possible to produce, as illustrated in FIG. 16, the handpiece 3 so as to allow a removable mounting of the end piece 72, the latter being for example secured to a connector 100 configured to engage inside. a housing provided for this purpose in the grip part. This can allow, in particular in the case of a

  use in a beauty salon, to change tip 72 between two customers.

  A micro-abrasion device according to the invention can advantageously

  as illustrated in FIG. 17, integrating into a case 110 comprising cosmetic products 111, for example for preparing the skin and / or caring after treatment.

  In this example, the handpiece receives the cartridge 5 and incorporates the pump, but is connected to an electrical energy source 112, for example an AC adapter, by an electrical cable.

  The micro-abrasion device can also be part of a make-up or skin care kit 120, as illustrated in FIG. 18, or be integrated into a

  bathroom cabinet or shelf 130, as shown in Figure 19.

  The micro-abrasion device can also include a base station 30 comprising an articulated cover 120, as illustrated in FIG. 20. This cover can accommodate a

mirror 121, for example.

  The base station 2 can be arranged to receive the cartridge 5 in progress

  of use and a reserve cartridge 5 ', intended to replace cartridge 5.

  The base station 2 can be arranged to also receive containers 122

  containing products to be applied to the skin before and / or after treatment.

  The powder P can comprise any pulverulent agent capable of producing an abrasion and for example particles of corundum or powders based on cereal flours. By way of example of powders based on cereal flours, mention may be made of powders having a vitreous structure, resulting from the polymerization and crosslinking of cereal flours in an alkaline medium using a crosslinking agent chosen. in the group formed by formulating agents and maleic anhydride, such powders being described in patent application FR 2 761 365, the content of which is

  incorporated herein by reference.

  The powder P can also incorporate at least one cosmetic or care active.

  As active ingredient which can be incorporated into the powder, mention may be made, among others, of vitamins, for example vitamin C, skin protection agents, antibacterials, anti-wrinkles, moisturizers, softeners, perfumes, preservatives, sunscreens, fatty acids or oils, this list is not exhaustive. The powder may contain particles having a size for example between 80 and 150 Ftm. The dimension is given by the particle size distribution

  statistic to half the population, called D50.

  A pump other than a diaphragm pump can be used. However,

  the use of a membrane pump is preferred when the micro-abrasion device is intended for the general public, since such a pump can be manufactured with a cost compatible with large-scale diffusion.

  The cartridge can still be produced differently.

  In particular, the cartridge can be produced by assembling two tanks

  joined together for example by snap-fastening, welding, in particular by ultrasound, or bonding or by a support member. The two reservoirs can in particular be produced each with a flat wall and joined by these walls.

  The two tanks can also be manufactured with a common part coming from molding and comprising a film hinge making it possible to modify the

  configuration of this common part after demolding, to form the cartridge.

  The two tanks can be arranged side by side or one inside the other. At least one of the tanks can be made with a transparent window

  allowing the user to view the level of powder inside.

  The cartridge can be fitted with at least one valve intended to prevent

  powder outlet when handling the cartridge for placement or removal from the apparatus.

  The sampling orifice 22 can also be produced on a nozzle 140 intended to penetrate into the reservoir 10 containing the powder, as is the case of the variant of

  realization illustrated in figure 22.

  In this embodiment, the sampling tube 20 present inside the reservoir 10 is attached to the partition 41 and has a lower opening in which

  can engage the nozzle 140, the latter belonging to the base station 2 for example.

  Such an arrangement facilitates the production of the sampling tube in one piece with a wall of the reservoir 10, since the sampling orifice 22 is present on

  the nozzle 140 manufactured separately.

  Throughout the description, the expression "comprising a" must be understood

  as being synonymous with "comprising at least one", unless otherwise specified.

Claims (17)

  1. Apparatus (1) for micro-abrasion, comprising: - a first reservoir (10) intended to contain a powder (P) to be sprayed onto a surface to be treated, a second reservoir (11) intended to collect the used powder (U ), a handpiece (3) arranged to be applied against the surface to be treated,   device characterized in that it comprises a removable cartridge (5), which can be placed on the device and removed independently of the handpiece (3) and comprising 10 the first (10) and second (11) tanks .   2. Apparatus according to the preceding claim, characterized in that the first (10) and second (11) tanks are connected to each other in a non-removable manner at within the cartridge (5).   3. Apparatus according to one of the preceding claims, characterized in that the first (10) and second (11) tanks form two compartments within a body (40) of the cartridge (5).   4. Apparatus according to any one of the preceding claims,   characterized in that the first (10) and the second (11) tanks are attached to the within the cartridge (5).   5. Apparatus according to the preceding claim, characterized in that the   first and second tanks have a common wall (41).   6. Apparatus according to any one of the preceding claims,   characterized in that the first reservoir (10) has a cross section on the axis   longitudinal of the tank which decreases downwards.   7. Apparatus according to any one of the preceding claims,   characterized by the fact that the first reservoir (10) comprises a sampling tube (20)   open at its upper end (21).   8. Apparatus according to claim 7, characterized in that the tube   sampling has a lateral orifice (22) allowing the powder (P) to enter the tube.   9. Apparatus according to claim 7, characterized in that the sampling tube has a lower part (140) which can be separated from the cartridge and   which has a lateral opening (22) allowing the powder to enter the tube.   10. Apparatus according to any one of the preceding claims, characterized in that the first tank (10) has an air intake (24) which is arranged on a side wall (43b) of the tank.   11. Apparatus according to any one of the preceding claims,   characterized by the fact that the cartridge (5) comprises means for closing (54) a connection end piece (20a) from the first reservoir to a sampling conduit (12) for the powder (P) contained therein.   12. Apparatus according to any one of the preceding claims,   characterized by the fact that it comprises a base station (2) configured to receive the cartridge (5).   13. Apparatus according to the preceding claim, characterized in that the base station (2) is provided with a keying means preventing the establishment of the   cartridge (5) other than in a determined position.   14. Apparatus according to any one of claims 1 to 9, characterized by the   causes the handpiece (3) to be arranged to receive the cartridge (5).   15. Apparatus according to any one of the preceding claims, characterized in that the cartridge (5) comprises a body (40) produced by molding in   plastic material and a closure cover (49) attached to the body.   16. Cartridge (5) capable of being used in an apparatus as defined   in any one of the preceding claims, comprising a first reservoir (10) containing a powder (P) to be sprayed onto a surface to be treated and a second reservoir (11) intended to receive the used powder (U).   17. Cartridge according to the preceding claim, characterized in that the   powder (P) is made from cereal flours.