Filtration device

Abstract

Filtration device (6), in particular for filtering body residues, the filtration device comprising a housing (9) provided with an inlet (7) for a fluid to be filtered and with an outlet (8) for a filtered fluid, a filter element (13) of cylindrical shape, housed inside the housing, the filter element comprising a first flange (21) provided with first surfaces (23) extending radially from the first base, a second flange (22) provided with second surfaces (24) extending radially from the first base, the housing further comprising first retaining elements (27) positioned facing the first surfaces, and second retaining elements (28) positioned facing the second surfaces, the first retaining elements and the second retaining elements being arranged so as to maintain a minimum spacing between the first flange and the second flange.

Description

Description Title of the invention: Filtration device

[0001] The invention relates to the field of filtration devices, in particular for filtering bodily residues. The invention also relates to a massage device comprising a skin suction device, the suction device comprising such a filtration device.

[0002] To perform skin massages, massage devices equipped with a skin suction device are conventionally used. These massage devices may, for example, comprise a treatment head configured to perform a palpate-roll massage. The treatment head is connected by a suction circuit to a suction device. The suction device promotes the creation of a skin fold within the massage head. Publications EP0224422A1, EP0917452A1, or WO2015185814A1 disclose, for example, such a massage device. When using the massage device, the suction device receives various bodily residues, i.e. residues from the human body, in particular organic elements such as dead skin, scales, hair, sebum, perspiration or any other matter that may be found on the surface of the skin.To ensure proper hygiene and proper functioning of the massager, the suction device is usually equipped with a filtration device such as a filter cartridge. This filter cartridge is equipped with a filter element that filters out the various bodily residues mentioned above. Filter cartridges must be replaced very regularly, which generates a significant amount of waste.

[0003] In order to reduce the environmental impact of used filter cartridges, filter cartridges equipped with a filter element made from natural and / or biodegradable materials have been proposed. However, these materials generally have poorer mechanical properties compared to conventionally used materials, and therefore do not allow for effective and long-lasting filtration.

[0004] At the same time, massage devices must remain very simple to use. In particular, replacing a filter cartridge must be quick and easy for any user.

[0005] The aim of the invention is to provide a filter cartridge which overcomes the above drawbacks and improves the filter cartridges known from the prior art.

[0006] More specifically, a first object of the invention is a filtration cartridge capable of achieving effective and lasting filtration, even if its filter element has less mechanical strength.

[0007] The invention relates to a filtration device, in particular for filtering bodily residues, the filtration device comprising a housing provided with an inlet for a fluid to be filtered and an outlet for a filtered fluid, a filter element of cylindrical shape, housed inside the housing, the cylindrical shape of the filter element comprising a first base on which a first flange is fixed, the first flange comprising first surfaces extending radially from the first base, the cylindrical shape of the filter element comprising a second base, opposite the first base, on which a second flange is fixed, the second flange comprising second surfaces extending radially from the second base, the housing further comprising first retaining elements positioned opposite the first surfaces, and second retaining elements positioned opposite the second surfaces, the first retaining elements and the second retaining elements being arranged so as to maintain a minimum spacing between the first flange and the second flange.

[0008] The filter element may be configured to filter bodily residues, including organic elements such as dead skin, dander, hair, sebum, or perspiration.

[0009] The first retaining elements may be positioned outside a projection of said second surfaces along a generatrix of the cylindrical shape, and the second retaining elements may be positioned outside a projection of said first surfaces along a generatrix of the cylindrical shape.

[0010] The housing may include a first portion and a second portion removably attached to each other so as to provide access to the filter element contained within the housing, the first retaining members being secured to the first portion of the housing, and the second retaining members being secured to the second portion of the housing.

[0011] The first retaining elements may extend parallel to a generatrix of the cylindrical shape of the filter element through a plane in which said second surfaces extend. The second retaining elements may extend parallel to a generatrix of the cylindrical shape of the filter element through a plane in which said first surfaces extend.

[0012] Said first surfaces may extend radially outwardly from the first base. Said second surfaces may extend radially outwardly from the second base.

[0013] Said first surfaces may be separated from each other by first openings through which the second retaining elements extend. Said second surfaces may be separated from each other by second openings through which the first retaining elements extend.

[0014] The housing may also comprise a cylindrical shape, a generatrix of the cylindrical shape of the housing being parallel to a generatrix of the cylindrical shape of the filter element, the inlet and the outlet of the housing being arranged concentrically on a base of the cylindrical shape of the housing.

[0015] The filter element may comprise a cellulose and / or a viscose and / or a polylactic acid. The first flange and the second flange may comprise a polylactic acid and / or a polyhydroxyalkanoate and / or a poly(P-hydroxybutyrate) and / or a poly(hydroxybutyrate-co-hydroxyvalerate) and / or a poly(butylene adipate terephthalate).

[0016] The first flange and the second flange can be glued or welded to the filter element.

[0017] The filtration device may be a filtration cartridge configured to be sealed and removably assembled to a housing of a suction device.

[0018] The invention also relates to a method for replacing the filter element of a filtration device as defined above, characterized in that it comprises: - disassembly into two parts of the case, then - extraction of the filter element contained in the housing by a translational movement parallel to a generatrix of the cylindrical shape of the filter element, then - the supply of a new filter element, then - inserting the new filter element into the housing by a translational movement parallel to a generatrix of the cylindrical shape of the new filter element, then - reassembly of the two parts of the case.

[0019] The invention also relates to a massage device comprising a skin suction device, the suction device comprising a filtration device as defined previously.

[0020] These objects, characteristics and advantages of the present invention will be explained in detail in the following description of a particular embodiment made without limitation in relation to the attached figures among which:

[0021] Figure 1 is a schematic view of a massage device equipped with a filtration cartridge according to one embodiment of the invention.

[0022] Figure 2 is a perspective view of the filter cartridge.

[0023] Figure 3 is an exploded view of the filter cartridge.

[0024] Figure 4 is a sectional view of the filter cartridge.

[0025] Figure 5 is a perspective view of a filter element provided with two flanges.

[0026] Figure 6 is a perspective view of a first portion of a filter cartridge housing.

[0027] Figure 7 is a perspective view of a second part of the filter cartridge housing.

[0028] Figure 8 is a schematic sectional view of the filter cartridge.

[0029] Figure 9 is a schematic sectional view of a filtration cartridge according to a first variant embodiment of the invention.

[0030] Figure 10 is a schematic sectional view of a filtration cartridge according to a second alternative embodiment of the invention.

[0031] Figure 11 is a schematic sectional view of a filtration cartridge according to a third alternative embodiment of the invention.

[0032] Figure 1 schematically illustrates a massage device 1 according to one embodiment of the invention. The massage device 1 comprises a treatment head 2 intended to be applied against the skin and a suction device 3 connected to the treatment head 2 by a suction duct 4. The treatment head 2 can be configured to perform a palpate-roll massage. For this purpose, it can comprise at least one roller arranged in a working chamber. The suction duct 4 is connected to the working chamber so as to establish a vacuum therein. The working chamber is intended to be applied against the skin of a patient to be treated to form a skin fold. The suction device 3 is therefore intended to generate a vacuum in the ambient air and is capable of sucking up bodily residues located on the surface of the patient's skin.

[0033] The suction device 3 comprises a suction means 5 configured to generate a vacuum, in particular a pump. The suction device 3 also comprises a suction device, in particular in the form of a filtration cartridge 6. The suction means 5 can for example generate a pressure differential of the order of - 0.5 Bar, or even 0.8 Bar, or even 0.9 Bar. The suction means 5 is hydraulically connected to the treatment head 2 via the filtration cartridge 6. The filtration cartridge 6 comprises an inlet 7 for a fluid to be filtered and an outlet 8 for a filtered fluid. In this case, said fluid consists of ambient air but alternatively it could also comprise another gas or a liquid.

[0034] The filter cartridge 6 comprises a housing 9 having a generally cylindrical shape. The cylindrical shape comprises two circular bases connected by a set of generatrices. The generatrices are thus a set of segments parallel to each other and connecting the two bases of the cylindrical shape. The inlet 7 and the outlet 8 are arranged concentrically on a base of the cylindrical shape of the housing. In particular, the outlet 8 is arranged around the inlet 7. Thus, a flow F of fluid within the filter cartridge (illustrated by dotted arrows in FIG. 4) comprises at least one centrifugal component. The inlet 7 has a circular section and the outlet 8 has an annular section. Alternatively, this arrangement could be reversed, that is to say that it is the inlet 7 which could be arranged around the outlet 8 and the flow F of fluid within the filter cartridge would comprise at least one centripetal component.The inlet 7 and the outlet 8 are intended to be assembled in a sealed and removable manner to a casing of the suction device. For this purpose, the inlet 7 and the outlet 8 are surmounted by a thread 10 intended to cooperate with a tapped opening in the casing of the suction device 3.

[0035] Figures 2, 3 and 4 illustrate the filter cartridge 6 respectively in top view, exploded view and sectional view. Advantageously, the housing 9 comprises a first part 11 and a second part 12 fixed to each other in a removable manner. Thus a user can access a filter element 13 contained inside the housing, so as to replace it. In particular, the first part 11 can form a tank and the second part 12 can form a cover of the tank. The first part 11 and the second part 12 are secured to each other by means of a fixing element 14. According to the embodiment presented, the fixing element 14 holds the second part 12 against the first part 11 by a bayonet mechanism. The fixing element 14 passes through an opening 15 provided on the second part 12, and it comprises an angled groove 16 cooperating with a lug formed in the first part 11. Advantageously, the fixing element 14 comprises a knurled head 17 which facilitates the rotation by hand of the fixing element 14 to actuate the bayonet mechanism. Seals 18, 19 are provided respectively at the interface between the first part 11 and the second part 12 and at the interface between the fixing element 14 and the opening 15.The opening 15 may be provided with a clip cooperating with a groove in the fixing element 14 so as to hold the fixing element 14 secured to the second part 12 of the housing. Alternatively, the first part 11 and the second part 12 could be fixed to each other differently. For example, the fixing element 14 could comprise a screw cooperating with a threaded opening in the first part. The second part could also be screwed or clipped directly to the first part. According to yet another embodiment, the first part and the second part could be fixed to each other in a non-removable manner. They could, for example, be welded or glued to each other.

[0036] According to another alternative embodiment not shown, the filtration device could be different from a filtration cartridge. The filtration device could for example be integrated into the housing of the suction device. The housing of the suction device could then comprise a housing provided with an inlet for a fluid to be filtered and an outlet for a filtered fluid. This housing would be intended to receive the filter element 13 and could be closed by a cover removably attached to the housing. The housing would thus form the first part 11 of the housing 9 and the cover would thus form the second part 12 of the housing 9.

[0037] Figure 5 illustrates more precisely the filter element 13 housed inside the housing 9. The filter element 13 is configured to retain bodily residues contained in the fluid passing through it. It may comprise a honeycomb or mesh structure whose characteristics are adapted to retain bodily residues. It may comprise an efficiency greater than or equal to 99% according to the ISO 5011 standard, or even greater than or equal to 99.5%. Preferably, the filter element may comprise a compostable material, in particular according to the EN 13432 standard. The filter element 13 may also be manufactured from recycled materials and / or from natural materials such as plant materials. More generally, the filter element 13 may be designed and / or manufactured by applying principles of respect for the environment. For example, the filter element comprises a cellulose and / or a viscose and / or a polylactic acid. Preferably, the filter element 13 does not include any reinforcement to increase the rigidity of the filter element. In particular, it does not include any plastic or metal reinforcement.

[0038] The filter element 13 comprises a cylindrical shape. This cylindrical shape comprises a first base and a second base opposite the first base. The first base and the second base both have an annular shape, and are connected to each other by a set of generatrices parallel to an axis X. The axis X is also parallel to the generatrices of the cylindrical shape of the housing 9.

[0039] The filter element 13 is further equipped with a first flange 21 and a second flange 22 fixed respectively on the first base and on the second base of the cylindrical shape of the filter element 13, for example by gluing or by welding. The flanges 21 and 22 are in the form of plates of substantially constant thickness and extend parallel to each other, perpendicular to the axis X. The filter element 13 and the flanges 21, 22 each comprise a central opening centered on the axis X.

[0040] As for the filter element 13, the flanges 21 and 22 may comprise a compostable material, in particular according to the EN 13432 standard. The flanges 21 and 22 may also be manufactured from recycled materials and / or from natural materials such as plant materials. More generally, the flanges 21 and 22 may be and / or manufactured by applying environmentally friendly principles. For example, the flanges 21, 22 comprise a polylactic acid and / or a polyhydroxyalkanoate and / or a poly(|3-hydroxybutyrate) and / or a poly(hydroxybutyrate-co-hydroxyvalerate) and / or a poly(butylene adipate terephthalate). According to one embodiment, the filter element 13 and the flanges 21, 22 could be manufactured in the form of a single-piece element, for example made of polylactic acid.

[0041] The first flange 21 comprises first surfaces 23 extending radially from the first base of the cylindrical shape of the filter element 13. Similarly, the second flange 22 comprises second surfaces 24 extending radially from the second base of the cylindrical shape of the filter element 13. In particular, the first surfaces 23 and the second surfaces 24 extend in the centrifugal direction relative to the X axis. They form protrusions or lobes extending radially from the X axis. According to the embodiment presented, the first flange 21 comprises five first surfaces 23 and the second flange 22 comprises five second surfaces 24. Alternatively, this number could be any, preferably greater than or equal to 2, in particular three or four surfaces. The first surfaces 23 are separated from each other by first openings 25. Similarly, the second surfaces 24 are separated from each other by second openings 26. The first surfaces and the second surfaces 24 are offset from each other according to a projection parallel to the X axis. In particular, the first openings 25 are positioned opposite the second surfaces 24 along the X axis.Likewise, the second openings 26 are positioned opposite the first surfaces 23 along the X axis. The first flange 21 and the first flange 22 can. comprise a circumscribed circle C1 at their first surfaces 23 or respectively at their second surfaces 24 which has a diameter strictly greater than the diameter of the circumscribed circle of the filter element 13. The first flange 21 and the first flange 22 may comprise a circumscribed circle C2 at their first openings 25 or respectively at their second openings 26 which has a diameter substantially equal to the diameter of the circumscribed circle of the filter element 13. Preferably, the first surfaces 23 have an identical shape to each other and are distributed around the axis X. Likewise, the second surfaces 24 have an identical shape to each other and are distributed around the axis X.

[0042] Figures 6 and 7 illustrate respectively the first part 11 and the second part 12 of the housing 9. The first part 11 of the housing 9 comprises first retaining elements 27 positioned opposite the first surfaces 23. Similarly, the second part 12 of the housing 9 comprises second retaining elements 28 positioned opposite the second surfaces 24. The first retaining elements 27 and the second retaining elements 28 are arranged so as to maintain a minimum spacing between the first flange 21 and the second flange 22 along the axis X. The first retaining elements 27 and the second retaining elements 28 form stops capable of exerting a bearing against internal faces respectively of the first surfaces 23 and the second surfaces 24. The retaining elements 27, 28 prevent the filter element from collapsing on itself along the axis X.When the filter element 13 is in place inside the housing 9, a clearance along the X axis, for example of the order of one millimeter or a few millimeters, can be established on the one hand between the first retaining elements 27 and the first surfaces 23, and on the other hand between the second retaining elements 28 and the second surfaces 24. Alternatively, the filter cartridge could be dimensioned so that there is no clearance between the first retaining elements T1 and the first surfaces 23 on the one hand, and the second retaining elements 28 and the second surfaces 24 on the other hand. The filter element 13 could then be slightly in tension along the X axis under the effect of the retaining elements 27, 28.

[0043] The first retaining elements 27 are positioned outside a projection of said second surfaces 24 along a generatrix of the cylindrical shape, that is to say a projection parallel to the axis X. In particular, the first retaining elements T1 extend parallel to the axis X through the second openings 26. They extend through a plane P2 (shown in FIG. 4) in which said second surfaces 24 extend. In particular, the first retaining elements 27 extend from a base of the cylindrical shape of the housing 9 opposite the first base of the cylindrical shape of the filter element 11. The first retaining elements 27 extend against a cylindrical wall 29 of the first part 11 of the housing, which makes it possible to improve the rigidity thereof. The first retaining elements 27 may have a constant section along the X axis, in particular U-shaped. The first part 11 of the housing 9 may comprise as many first retaining elements 27 as first surfaces 23 and each first retaining element 27 is capable of cooperating with a first surface 23.

[0044] Likewise, the second retaining elements 28 are positioned outside a projection of said first surfaces 23 along a generatrix of the cylindrical shape. In particular, the second retaining elements 28 extend parallel to the axis X through the first openings 25. They extend through a plane PI (shown in FIG. 4) in which said first surfaces 23 extend. In particular, the second retaining elements 28 extend projecting from a base of the cylindrical shape of the housing 9 opposite the second base of the cylindrical shape of the filter element 11. The second retaining elements 28 may have a constant section along the axis X, in particular O-shaped. The second part 12 of the housing 9 may comprise as many second retaining elements 28 as second surfaces 24 and each second retaining element 28 is capable of cooperating with a second surface 24.

[0045] The first part 11 and the second part 12 may each be one-piece parts obtained by molding, for example by plastic injection. In addition, it is observed that the first part 11 of the housing 9 may comprise first supports 31 on which the second surfaces 24 of the second flange 22 may rest. The first supports 31 may be positioned between the first retaining elements 27, facing the second retaining elements 28. These supports 31 may be in the form of a rib whose section has the shape of a U. These supports 31 also contribute to the rigidity of the first part 11 of the housing 9. Similarly, the second part 12 of the housing 9 may comprise second supports 32 on which the first surfaces 23 of the first flange 21 may rest. The second supports 32 may be positioned between the second retaining elements 28, facing the first retaining elements 27.These supports 32 may be in the form of a rib whose section has the shape of a U. These supports 21 also contribute to the rigidity of the second part 12 of the housing 9. The first flange 21 is intended to be locked in position between the first retaining elements 27 and the second supports 32. Similarly, the second flange 22 is intended to be locked in position between the second retaining elements 28 and the first supports 31.

[0046] The first part 11 of the housing also comprises a centering device 33 extending into the central opening of the filter element. The centering device 33 comprises openings 34 communicating with the inlet 7 and supports the lug 35 cooperating with the angled groove 16 of the fixing element 14. Finally, the first part 11 may also comprise a guiding and indexing means 36 for the filter element 13. In particular, the guiding and indexing means 36 may be formed by two walls extending radially and parallel to the axis X from the cylindrical wall 29. The spacing of the two walls corresponds substantially to the width of one of the second surfaces 24. Thus, the filter element 13 may be guided in translation parallel to the X axis during its insertion into the first part 11 of the housing 9, and it can be locked in rotation around the X axis. Advantageously, all the second surfaces 24 have the same width, so that various orientations of the filter element 13 within the housing 9 are possible.

[0047] When the massage device is operating, the massage head 2 is applied against the skin of a patient and the suction means 5 generates a depression forming a skin fold in the massage chamber. Bodily residues on the surface of the skin are sucked up. The air flow F loaded with these bodily residues then enters the filter cartridge 6 through the inlet 7, passes through the filter element 13, then exits through the outlet 8. The bodily residues are stopped by the filter element 13. The air leaving the filter cartridge is clean, which guarantees good hygiene and good operation of the massage device. The air flow F passing through the filter element 13 exerts a mechanical stress on it which tends to cause the filter element 13 to collapse. This stress is all the more significant since the materials constituting the filter element 13 have low mechanical strength and do not include a specific reinforcement.Nevertheless, the combined action of the first retaining elements 27 on the first surfaces 23 of the first flange 21 and of the second retaining elements 28 on the second surfaces 23 of the second flange 22 prevents the filter element from collapsing along the X axis. Its effectiveness is thus preserved.

[0048] When the filter cartridge 6 needs to be changed, the user can simply unscrew it from the housing of the filter device. Then, if the housing 9 cannot be opened, the filter cartridge 6 is thrown into the trash. The use of an environmentally friendly material for the filter element 13 already makes it possible, to a small extent, to reduce the environmental impact of disposing of the filter cartridge 6.

[0049] Preferably, the housing 9 can be opened so as to access the filter element. According to the embodiment presented, after removing the filter cartridge 6 from the housing, the user can remove the fixing element 14 and then disassemble the two parts 11 and 12 of the housing 9. Then he can extract the filter element 13 contained in the housing by a single translational movement parallel to the X axis. To do this, he can grasp the first flange 21. The user thus does not need to touch the filter element 13. Then, once the filter element 13 has been removed, he can acquire a new identical filter element and insert it into the first part 11 of the housing 9. This insertion is very simple since it simply consists of moving the filter element parallel to the X axis.The correct orientation of the filter element around the X axis is visually easy to determine by observing the second surfaces 24 and the first retaining means 27 and / or the guiding and indexing means 36. Finally, the two parts 11 and 12 of the housing can be reassembled and the fixing element 14 can be put back in place to secure the closure of the housing. It is then sufficient to screw the filter cartridge back onto the housing of the suction device. The filter element can be composted or put in a. trash where it will quickly degrade. Thanks to the invention, we can therefore effectively reduce the quantity of waste linked to the use of a massage device while preserving the performance and hygiene of its suction device.

[0050] If the filtration device is integrated directly into the suction device housing, simply remove the cover giving access to the housing containing the filter element, then replace the filter element with a new filter element before replacing the cover.

[0051] Figure 8 schematically illustrates the filter cartridge 6 which has just been described. Figures 9 to 11 schematically illustrate alternative embodiments of the filter cartridge. These alternative embodiments are described by emphasizing the differences relative to the filter cartridge 6 which has just been described. For each of these three variants, the same reference signs are used to designate the objects having functions similar to the functions of the objects of the filter cartridge 6, and by adopting a suffix, respectively "A", "B" and "C".

[0052] Figure 9 illustrates a filter cartridge 6A similar to the filter cartridge 6, but in which the first retaining means 27A extend, not from the base of the cylindrical shape of the first part 11A, but from the cylindrical wall 29A of the first part 11A. It is thus possible to reduce the quantity of material used to manufacture the first part 11A. On the other hand, there is less benefit from the stiffening effect of the cylindrical wall 29A by the first retaining means 27A and this variant may require the use of a more complex injection mold.

[0053] Figure 10 illustrates a filter cartridge 6B similar to the filter cartridge 6, but in which the first flange 21B extends radially, not outwards (i.e. in the centrifugal direction), but towards the inside of the filter element 13B. The first retaining means 27B therefore extend inside the central opening of the filter element 13B. The first retaining means then also act as a centering device for the filter element 13B and are provided with openings 34B communicating with the inlet 7B. The first flange 21B may have the shape of a disc and the second flange 22B may have the shape of a ring with a central opening through which the first retaining means 27B pass. According to yet another variant, not shown, it is the second flange which could extend radially towards the inside of the filter element while the first flange would extend towards the outside of the filter element.

[0054] Figure 11 illustrates a filter cartridge 6C similar to the filter cartridge 6, but in which the first flange 21C and the second flange 22C extend radially, not outwards, but inwards of the filter element 13C. The first retaining means 27C and the second retaining means 28C therefore extend inside the central opening of the filter element 13C. The first retaining means 27C and the second retaining means 28C can then also act as a centering device for the filter element 13C. Like the filter element 13 previously described, the first flange 21C may comprise first surfaces 23C and the second flange 22C may comprise second surfaces 24C. The first surfaces 23C and the second surfaces 24C are interspersed with openings and offset from each other in a projection parallel to a generatrix of the filter element 13C. This embodiment has the advantage that the filter element 13C is more compact.

Claims

Demands

1. A filtration device (6), in particular for filtering bodily residues, the filtration device comprising a housing (9) having an inlet (7) for a fluid to be filtered and an outlet (8) for a filtered fluid, a cylindrical filter element (13) housed inside the housing, the cylindrical shape of the filter element comprising a first base on which a first flange (21) is fixed, the first flange comprising first surfaces (23) extending radially from the first base, the cylindrical shape of the filter element comprising a second base, opposite the first base, on which a second flange (22) is fixed, the second flange comprising second surfaces (24) extending radially from the second base, the housing further comprising first retaining elements (27) positioned opposite the first surfaces,and second retaining elements (28) positioned opposite the second surfaces, the first retaining elements and the second retaining elements being arranged so as to maintain a minimum distance between the first flange and the second flange.

2. Filtration device (6) according to the preceding claim, characterized in that the filter element is configured to filter bodily residues, in particular organic elements such as dead skin, dander, hair, sebum, or perspiration.

3. Filtration device (6) according to any one of the preceding claims, characterized in that the first retaining elements are positioned outside a projection of said second surfaces along a generatrix of the cylindrical shape, and in that the second retaining elements are positioned outside a projection of said first surfaces along a generatrix of the cylindrical shape.

4. Filtration device (6) according to any one of the preceding claims, characterized in that the housing (9) comprises a first part (11) and a second part (12) fixed to each other in a removable manner so as to allow access to the filter element (13) which the housing contains, the first retaining elements (27) being integral with the first part of the housing, and the second retaining elements (28) being integral with the second part of the housing.

5. A filtration device (6) according to any one of the preceding claims, characterized in that: - the first retaining elements (27) extend parallel to a generatrix of the cylindrical shape of the filtering element through a plane (P2) in which said second surfaces (24) extend, and / or in that - the second retaining elements (28) extend parallel to a generatrix of the cylindrical shape of the filtering element through a plane (PI) in which the said first surfaces (23) extend.

6. A filtration device (6) according to any one of the preceding claims, characterized in that: - said first surfaces (23) extend radially outwards from the first base, and / or in that - said second surfaces (24) extend radially outwards from the second base.

7. A filtration device (6) according to any one of the preceding claims, characterized in that: - said first surfaces (23) are separated from each other by first openings (25) through which the second retaining elements (28) extend, and / or in that - said second surfaces (24) are separated from each other by second openings (26) through which extend the first retaining elements (27).

8. Filtration device (6) according to any one of the preceding claims, characterized in that the housing (9) also comprises a cylindrical shape, a generatrix of the cylindrical shape of the housing being parallel to a generatrix of the cylindrical shape of the filtering element, the inlet (7) and outlet (8) of the housing being arranged concentrically on a base of the cylindrical shape of the housing.

9. Filtration device (6) according to any one of the preceding claims, characterized in that the filter element (13) comprises cellulose and / or viscose and / or polylactic acid.

10. Filtration device (6) according to any one of the preceding claims, characterized in that the first flange (21) and the second flange (22) comprise a polylactic acid and / or a polyhydroxyalkanoate and / or a poly(P-hydroxybutyrate) and / or a poly(hydroxybutyrate-co-hydroxyvalerate) and / or a Poly(butylene adipate terephthalate).

11. Filtration device (6) according to any one of the preceding claims, characterized in that the first flange (21) and the second flange (22) are glued or welded to the filter element.

12. Filtration device (6) according to any one of the preceding claims, characterized in that it is a filtration cartridge configured to be assembled in a sealed and removable manner to a housing of a suction device (3).

13. A method for replacing the filter element (13) of a filtration device (6) according to any one of the preceding claims, characterized in that it comprises: - the disassembly into two parts (11, 12) of the casing (9), then - the extraction of the filter element contained in the housing by a translational movement parallel to a generatrix of the cylindrical shape of the filter element, then - the supply of a new filter element (13), then - the insertion of the new filter element into the housing by a translational movement parallel to a generatrix of the cylindrical shape of the new filter element, then - the reassembly of the two parts of the case.

14. Massage apparatus (1) comprising a skin suction device (3), the suction device comprising a filtration device (6) according to any one of claims 1 to 12.

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