EP1706048A1 - Dispositif de microdermabrasion - Google Patents

Dispositif de microdermabrasion

Info

Publication number
EP1706048A1
EP1706048A1 EP04743253A EP04743253A EP1706048A1 EP 1706048 A1 EP1706048 A1 EP 1706048A1 EP 04743253 A EP04743253 A EP 04743253A EP 04743253 A EP04743253 A EP 04743253A EP 1706048 A1 EP1706048 A1 EP 1706048A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
vacuum
limb
skin
headspace
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04743253A
Other languages
German (de)
English (en)
Inventor
Philip Ball
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Crystal Clear International Ltd
Original Assignee
Crystal Clear International Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Crystal Clear International Ltd filed Critical Crystal Clear International Ltd
Publication of EP1706048A1 publication Critical patent/EP1706048A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/54—Chiropodists' instruments, e.g. pedicure
    • A61B17/545—Chiropodists' instruments, e.g. pedicure using a stream or spray of abrasive particles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/08—Accessories or related features not otherwise provided for
    • A61B2090/0813—Accessories designed for easy sterilising, i.e. re-usable

Definitions

  • the present invention relates to a device for microdermabrasion.
  • the present invention also relates to the field of skin treatment and to improvements in an apparatus for carrying out micro-abrasion, in particular microdermabrasion and more particularly to provide improvements to the handset used to carry out microdermabrasion, its construction and use in hygienic skin treatments without anaesthetic.
  • a number of devices are well known in the art for use in aesthetic applications in the field of skin treatment. These devices include devices used for abrasively removing layers of human skin in such a way as ultimately to obtain aesthetic improvements to the skin being treated. Depending on the application and the desired end result, such superficial skin abrasion may range from a light abrasion, where the outermost layers of the epidermis are removed, to a much deeper abrasion, where the dermis is involved.
  • Treatment with such devices is termed a microdermabrasion procedure and may be used to remove the epidermal skin layer, or selected portions of the epidermal skin layer, such as the stratum corneum. Removal of all or selected portions of the epidermal layer from a treatment area may stimulate underlying skin tissue, which may in turn serve the desirable outcome of freshening or toning the skin.
  • a microdermabrasion procedure may also be used to remove portions of the dermal skin layer from a treatment area. Removing portions of the dermal skin layer may remove undesired skin pigmentation or blend the colour of the treatment area more closely to match the skin pigmentation of adjacent skin.
  • a microdermabrasion procedure may be used to freshen or tone the skin, to treat wrinkles, such as ageing wrinkles, to treat stretch marks, and/or to treat skin blemishes. Skin blemishes which may be susceptible to microdermabrasion treatment include, but are not limited to, certain forms of keratoses, acne, scar tissue, calluses, melasma, hyper- pigmentation, photo- or sun- damaged skin, and tattoos.
  • a microdermabrasion machine During a microdermabrasion procedure, the hand piece of a microdermabrasion apparatus may be guided over a treatment area.
  • One type of microdermabrasion machine depends on an oscillating abrasive tip or platform to remove skin tissue (US-A-6241739 and US-A6283978). Some prior art machines use vacuum suction to remove debris (US 2003060834).
  • abrasive particles are projected from a supply receptacle across the treatment area using compressed air or gas. The particle may abrade and remove portions of the skin, and a vacuum may be used to draw the abrasive particles and removed skin into a waste receptacle.
  • the vacuum may typically range from about 10cm to about 50cm of mercury, and stretch the skin causing local vasod ilatation.
  • US-A-5037432 describes an apparatus which is used to remove surface portions of human tissues in an adjustable manner, and essentially comprises a tool provided with a supply tube along which abrasive reducing substances (particles) are propelled under pressure.
  • a through- hole in the head disposed along the axis of the tube permits the substances to abrade the region of tissue facing the hole.
  • a collection tube in which is created a depression is provided for the purpose of removing under suction both the reducing substances, and the portions of tissue removed during the treatment.
  • This apparatus employs both a compressed gas and a vacuum line.
  • GB-A-2319480 also involves a combination of compressed gases and vacuum to project abrasive particles at the skin, and remove used abrasive and skin debris from the treatment area.
  • US-A-659259 is designed for microdermabrasion and suction massage and uses exclusively a vacuum supply to perform both functions, back- flushing being carried out by connecting various portions of the unit to a pressurised output of the source of vacuum
  • EP-A-0324448 discloses device for making micro-abrasions, particularly on human tissue, which includes a handle having an aperture that is intended to be positioned on the surface to be treated, and means for the metered supply of reducing substances in a pneumatic carrier to the aperture of the handle.
  • the supply means comprises only a vacuum source.
  • US Patent No. 5810842 discloses a device for microdermabrasion using a flow of a mixture of air and reducing substances, the device comprising a casing with a vacuum pump and a compressor at an interior of the casing.
  • the device further comprises a control footswitch for actuating the compressor, a mixing bulb and a collecting bulb at an exterior of the casing, and a hand piece extending between the mixing bulb and the collecting bulb.
  • WO-A-97/11650 describes an device for microdermabrasion comprising a first container for unused micro-crystals, a second container for used micro-crystals, a handset provided with a delivery aperture for delivering unused micro-crystals to skin and for receiving used micro-crystals and skin debris, and second means adapted to withdraw used crystals from the skin via a vacuum inlet.
  • WO-A-99/23951 discloses a device for making micro-abrasions including a handle having an inlet passage and an outlet passage communicating with an aperture in said handle.
  • the aperture in use is adapted to be positioned on a surface to be treated, such as the skin, and a pneumatic means provides a variable supply of abrasive particles to the aperture of the handle.
  • the pneumatic means includes a vacuum source having a suction outlet that is operatively connected to the outlet passage of the handle and an exhaust outlet that is operatively connected to the inlet passage of the handle, thereby to cause the abrasive particles from the supply container to flow through the handle.
  • EP-A-0992221 discloses a particle beam flow abrasion system including machinery for creating a vacuum and positive pressure.
  • United States Patent No. 6562050 discloses a hand piece for use in a microdermabrasion system, the hand piece including a control line that allows the user to control activation of the compressor, a vacuum line and a compressor line.
  • the microdermabrasion system includes a vacuum pump, compressor and a mixing bottle.
  • a pressure sensor is used to detect pressure changes in the system for use in activating/deactivating the compressor.
  • Prior art microdermabrasion devices suffers from one or more of the following disadvantages: they are bulky and/or of complex construction and/or have a plurality of lines connecting the nozzle or handle with the rest of the device comprising the vacuum pump, compressor and/or micro- particle reservoir; they do not provide the user with good control over the micro-particle flow, or else control of micro-particle flow is only achieved by complex and/or costly means; the device is difficult to keep sterile and/or clean, particularly when recharging the micro-particle reservoir.
  • US-A- 6322568 describes an attempt to overcome the problems of lack of guaranteed sterile conditions.
  • the apparatus disclosed comprises a compressor, a vacuum pump, and three detachable one-piece components, including a mixing bottle, a collecting bottle for the abraded particles, and a hand piece to touch the tissue to be treated.
  • These components are preferably made of glass or plastic material and can be easily sterilised.
  • microdermabrasion device which is not bulky or difficult to use, which is not encumbered by a multiplicity of flow lines, which comprises means for controlling micro-particle flow, and which is relatively easy to keep clean and/or sterile, in particular when recharging or changing the micro-particle reservoir.
  • a microdermabrasion device for skin treatment comprising:
  • a handset housing a nozzle head and having handle means for manipulating the handset; • a nozzle in the nozzle head for supplying a stream of micro- particulate material to the skin surface in use of the device;
  • the nozzle communicating at its downstream end with the headspace and at its upstream end with a flow line having at least two limbs, a first limb communicating in use of the device with the atmosphere, and a second limb communicating in use of the device with a reservoir of micro- particulate material, the first and second limbs being arranged with respect to each other such that the pulling of a vacuum in the headspace when the outlet port is positioned against the skin surface causes an airflow from the atmosphere to the headspace through the first limb of the flow line, and causes material from the reservoir to be drawn into the flow line by means of a venturi effect at the junction of the first and second limbs of the flow line.
  • the microdermabrasion device of the invention has a number of significant advantages in relation to prior art devices and systems.
  • the transfer of material from the reservoir to the skin surface is effected by means only of a vacuum in the headspace.
  • the invention does not require the use of a separate compressor. Rather, the invention is operable simply by connection of the headspace to a vacuum line.
  • the absence of a compressor in the device of the invention means that the device is relatively small compared to some prior art devices, and is relatively easier to manipulate, both due to its size and the absence of any compressor line. It should be appreciated that the device of the invention is intended primarily for use in cosmetic applications and, in particular, in beauty salons and the like. Space and manoeuvrability are important considerations in such business environments, and so the absence of a compressor provides a significant advantage in this respect.
  • the device of the invention also has the advantage that the flow of micro- particulate material is easily controlled by the user. This could of course be achieved by controlling the strength of the vacuum pulled in the headspace by means of the vacuum pump setting or some other suitable controller.
  • the micro-particulate material flow can be controlled simply by lifting the outlet port from the skin surface. Slight such lifting will decrease the flow of micro-particulate material, and complete removal of the outlet port from the skin surface will dramatically reduce the flow, or shut the flow off altogether, as the vacuum pulled in the headspace will simply draw air in through the outlet port, and the venturi effect between the first and second limbs will be minimal or non-existent as the air flow in the first limb is reduced or stopped.
  • the outlet port When the outlet port is placed against the skin surface, it is also possible to control to some extent the micro-particulate material flow by partially closing the communication between the first limb of the flow line and the atmosphere, for example by placing a finger (or other closure means, possibly connected to the device) over a part of the flow line first limb end.
  • a finger or other closure means, possibly connected to the device
  • the invention provides a microdermabrasion device as described hereinabove, wherein the flow line is provided downstream of the second limb with a third limb communicating with the atmosphere.
  • first and third limbs communicating with the atmosphere respectively upstream and downstream of the connection between the second limb and the first limb, the user is provided with an even greater degree of control over the micro-particulate material flow in the device of the invention simply by using a finger (or other closure means) to close or partially close the first or third limb from the atmosphere.
  • mechanical or other means could be provided to make a more controlled or measurable closure possible, thereby effecting even greater control over the micro-particulate material flow.
  • Such mechanical means may comprise, for example a lever or piston operated closure means.
  • the third limb is of larger average cross section than the first limb in the region upstream of the third limb.
  • the resulting airflow occurs mainly via the third limb, thus minimising or preventing the flow of air in the first limb upstream of the third limb which would otherwise cause particulate material to be drawn through the second limb of the flow line by a venturi effect.
  • the third limb is closed to the atmosphere air is then drawn from the atmosphere through the first limb, and the resulting venturi effect at the junction of the first and second limbs causes particulate material to flow in the device.
  • the second limb of the flow line be at least approximately perpendicular to the first limb at the point where first and second limbs join.
  • the first limb be provided with a constriction in the region of or at the point where the first and second limbs join in order to achieve optimum venturi effect.
  • the headspace around the nozzle head is conveniently provided by means of a shroud covering the nozzle head and having within it an outlet port for contacting the skin in use of the device.
  • the nozzle head may be provided with more than one nozzle, and the outlet port may be enlarged, and may have dimensions commensurate with, larger than, or only slightly smaller than, the area circumscribed by the plural nozzles.
  • the second limb of the flow line communicates with a reservoir of micro-particulate material.
  • the reservoir is closed except for its point of communication with the flow line. This communication may be by means of a line connecting the handset with a separate reservoir.
  • the handset is provided with means for mounting a suitable reservoir of micro-particulate material.
  • the device of the invention relies only on a vacuum source, and not on a separate compressor, to withdraw particulate material from the reservoir, there arises another significant advantage of the invention, namely that the reservoir can be provided in sealed (if necessary hermetically sealed) form with a single openable or puncturable port for connecting to the second limb of the flow line.
  • sealed if necessary hermetically sealed
  • the present invention relies exclusively on a source of vacuum to create a closed airflow which picks-up inert abrasive particles housed within a simple device before the air/abrasive particle mixture thus created is caused to impinge on a targeted surface immediately beneath an aperture in a shroud which confines the emerging air/abrasive particle mixture stream, and encloses an outlet for a vacuum line along which the abrasive particles, after impact on the targeted surface, and any surface debris created by the impacts, are recovered by the same air stream that impinged upon the skin and are subsequently extracted by passage through filters prior to being exhausted to ambient.
  • the abrasive particles are introduced to the system from a sealed single treatment container inserted in a docking port within the device and replaced after each treatment.
  • the abrasive is only caused to drawn into the airflow when the shroud of the device is pressed onto the surface to be treated, effectively closing the air-flow system.
  • the filter for the exhaust air stream may be housed with the vacuum pump in a remote cabinet.
  • the invention is hygienic and extremely easy to control by the operator. When used in the microdermabrasion process the apparatus of the invention can be used without anaesthetising the patient.
  • Figure 1 shows a simplified schematic diagram of a microdermabrasion device in accordance with the invention
  • Figure 2 shows in more detail the interior arrangement of the device shown in of Figure 1 ;
  • Figure 3 shows the device of Figures 1 and 2 in operation against the surface of a skin tissue, and depicts the air flow in the device in use;
  • Figure 4 shows an alternative nozzle arrangement for treating larger areas.
  • Figure 1 shows the major desirable component parts of the invention in a schematically simplified form, comprising a vacuum pump (9) and filter/used abrasive container (8), remotely connected to a device (1 ) containing an abrasive container (2) by a flexible vacuum line (6).
  • Figure 2 shows a cross section of one possible arrangement of the airways within the device.
  • a channel (11 ) runs along the body of the device with outlets to atmosphere at points (12) and (13) and through the nozzle (16) in the head (5) of the device, where it protrudes centrally from the head (5) directly opposite the aperture (4) in the nozzle shroud (3).
  • outlet (12) is larger than that of outlet (13) and contains a course mesh filter to guard against abrasive particle escape.
  • Channel 10 runs from the abrasive container docking port (15) to join with channel (11 ) between outlets (12) and (13).
  • a separate channel (7) runs from the face of the device head (5) to a junction on the lower surface of the device where it connects with a flexible vacuum connection to the remote filter/abrasive collecting unit which in turn is connected to the vacuum pump.
  • Figures 3a and 3b both show in cross section the shroud (3), which is an air-tight push fit, placed around the device head (5) to create a potentially air-tight chamber (14) with a single aperture (4) directly opposite the outlet of the nozzle (16), which is at the end of channel (11 ) protruding from the face of the head (5).
  • Figure 3a shows the situation when the device (1 ) is held away from the surface and shroud aperture 4 remains open. Any vacuum applied to the chamber (14) via channel (7) will be dissipated via the aperture (4) in the shroud (3).
  • Figure 3b shows the situation when the device (1) is held against a surface and the shroud nozzle (4) is effectively sealed creating an air tight chamber (14) around the nozzle (16).
  • FIG. 4 shows an alternative form of the shroud (3) in cross section. This form of shroud is designed to diffuse the stream of abrasive particles projected onto the surface.
  • the apparatus of the present invention may be used with various fluid and transported media to etch, polish, abrade, clean or colour various surfaces including superficial areas of the human body.
  • various fluid and transported media to etch, polish, abrade, clean or colour various surfaces including superficial areas of the human body.
  • a process known as microdermabrasion will now be described in detail.
  • the device exemplified in figures 1 to 3 is self-contained with the exception of a source of vacuum and an associated filter, which may be of microbiological grade, to isolate all debris resulting from the abrasion of skin tissue with abrasive particles, for subsequent safe disposal.
  • a source of sterile abrasive powder (2) is designed to easily load into the device (1 ) and integrate with it via the docking port (15).
  • the source of abrasive powder should dock simply but firmly with the device using any known means but preferably a push, screw or bayonet (push and screw) mechanism and most preferably a push mechanism.
  • the abrasive powder container Prior to its incorporation into the device the abrasive powder container should be designed to serve as a container which is capable of being hermetically sealed.
  • the abrasive particle container may be constructed from any suitable container material in a size that is consistent with the ease of manipulation of the device when the abrasive container is attached.
  • the abrasive container is replaced whenever a new patient starts a treatment, to avoid any possibility of cross contamination.
  • the abrasive may be selected from any known abrasive particles, preferably alumina, aluminium trioxide or Corundum powder, most preferably aluminium oxide.
  • the particle size of the abrasive should fall within the range 50 microns to 320 microns, preferably 100 microns to 250 microns, most preferably 150 microns to 220 microns.
  • the device itself (1 ) may be fabricated from any suitable rigid material such as nylon 66, glass filled nylon, ABS, Acetate preferably a material that is suitable for injection moulding.
  • the various channels (7), (11 ) & (10) may be formed from any suitable flexible polymer tubing, such as Polyethylene, Polypropylene Neoprene or Nylon, capable of carrying a vacuum with a wall thickness of from 0.5mm to 3.0mm especially 1.0mm to 2.0mm and an internal diameter of from 2.0mm to 8.00mm preferably 2.0mm to 6.0mm.
  • Connectors, T junctions and the nozzle (16) where it emerges from the device head (5) may be fabricated in any relatively hard and rigid material such as glass or ceramic. The entire system of channels is constructed in order to be easily replaceable.
  • the nozzle shroud (3) is intended to be replaced after each treatment and is formed from any suitable relatively low surface energy material such as Teflon, Polythene or Propylene, which slides over the skin smoothly.
  • the operator aligns the aperture (4) in the nozzle shroud (3) with the area of the patient's skin to be abraded. Once this is done the device is brought into contact with the patient's skin and the shroud aperture is effectively closed. A vacuum builds up within the shroud chamber (14) and air is sucked into the system along channel (11 ) from outlets (12) & (13). However, whilst outlet (12) remains open the abrasive compartment remains undisturbed. The operator can now check that the shroud aperture (4) is directly over the area of skin to be treated and then gently close down outlet (12) forcing the air required to satisfy the vacuum being created in the shroud chamber (14) to be drawn increasingly from outlet (13).
  • the rate of air intake by outlet (12) may be controlled by any known means but preferably by a simple finger operated bleed valve and most preferably by the operator's finger exerting greater or less pressure. Unlike outlet (12), the rate of air intake by outlet (13) is fixed during any treatment with the device but may be varied from treatment to treatment by changing the diameter of the outlet (13) within the range 0.5mm to 2.0mm.
  • outlet (12) in a controlled manner governs the concentration of abrasive particles in the airflow and may be affected in any ergonomically efficient manner from the simple application of finger pressure to the use of levered pads.
  • outlet (12) Once outlet (12) is closed down the only source of air is outlet (13). Air drawn from outlet (13) along channel (11 ) towards the shroud chamber (14) passes the "T" junction with channel (10) leading to the abrasive particle container (2) and in so doing creates a venturi effect which entrains particles of abrasive, from the abrasive container (2), in the air stream which is sucked toward the shroud chamber and projected at the patient's skin beneath the shroud aperture. Once the mixture of air and abrasive particles has impacted with the skin it will be drawn away from the chamber, together with any skin debris, via channel (7) and the flexible vacuum connection.
  • outlet (13) on the outer surface of the device is not critical providing it occurs after the "T" junction of channel (10) with channel (11 ).
  • the operator has complete control of the abrasive aerosol by means of a simple single finger trigger action and the proximity of the device's nozzle shroud to the patients skin surface being treated, enabling her/him to move over the entire skin surface and implement the dermabrasion treatment.
  • the vacuum pump (9) is switched off and the abrasive container (2) and nozzle shroud (3) are removed from the device and replaced with new sterile items. Because only one flow stream is involved, once an abrasive particle has impacted the patient's skin the unique pathway for the used abrasive/skin debris containing air stream is down stream from the shroud chamber (14) to the filter/collector (8) via channel (7), which never sees an abrasive particle before it has passed through the shroud chamber (14). Just as channel (7) never sees an abrasive particle that has not been through the shroud chamber (14) so the entire airway system up stream from the shroud chamber (i.e. channels (10) and (11 ) never see an abrasive particle after it has been in contact with the skin, thus ensuring that the sterility of the abrasive particles is preserved.
  • the apparatus may be used on skin to remove scar tissue, acne scars, skin pigmentation marks and tattoos or to abrade other surfaces.
  • the only adjustments that may be required to the apparatus, as described above, to optimise its performance in these embodiments involves adjusting the absolute and relative air flows through the outlets (12) and (13) and in the design of the nozzle shroud (3).
  • outlet (12) in operation when outlet (12) is closed the maximum airflow is dictated by the size of outlet (13) which can be varied from device to device to deliver different airflows.
  • the diameter of inlet may be varied from 0.5mm to 2.0mm.
  • nozzle shroud (3) may be modified to diffuse the path of the abrasive particles projected from the nozzle (5).
  • Figure 4 shows suitable alternative nozzle shroud designs.
  • the flow line may be fabricated from any suitable material, for example Polyethylene, Polypropylene, Nylon or Neoprene.
  • Channel junctions, connectors and endings may be fabricated from harder materials such as ceramic and glass.
  • Aluminium oxide is typically used as the inert abrasive during a microdermabrasion procedure in accordance with the invention.
  • Cynamins for aluminium oxide include alumina, aluminium trioxide, and corundum powder.
  • the aluminium oxide used in a microdermabrasion procedure may be in the form of aluminium oxide particles.
  • the inert aluminium oxide particles may be irregularly shaped.
  • the aluminium oxide particles may have sharp edges.
  • An electrode process may be used to form aluminium oxide particles having sharp edges.
  • Sharp edged particles may have good abrasive properties when used as an abrasive in a microdermabrasion procedure.
  • Aluminium oxide particles may be sieved so that the aluminium oxide particles are predominantly within a desired size range. Mesh screens may be used to isolate aluminium oxide particles with a desired effective diameter size range.
  • the effective diameter size range for sharp edged aluminium oxide particles useful for microdermabrasion procedures may be from about 50 microns to about 320 microns.
  • Commercially available aluminium oxide particles suitable for use in a microdermabrasion procedure typically include a percentage of fines.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

La présente invention concerne un dispositif de microdermabrasion destiné au traitement de la peau (1), comprenant: un ensemble manuel renfermant une tête de buse (5) et présentant un système de poignée pour manipuler l'ensemble manuel; une buse (16) disposée dans la tête de buse, destinée à l'apport d'un courant de matière micro-particulaire à la surface de la peau lors de l'utilisation du dispositif; un espace de tête qui entoure la buse et la sépare d'un orifice de sortie pratiqué dans l'ensemble manuel, qui vient en contact avec la peau lors de l'utilisation du dispositif; un système pour produire une dépression dans l'espace de tête; un système pour retirer les débris de l'espace de tête et les évacuer de l'ensemble manuel. Selon l'invention, la buse communique à son extrémité aval avec l'espace de tête et à son extrémité amont avec la ligne de circulation présentant au moins deux branches dont une première communique avec l'atmosphère extérieure au cours de l'utilisation du dispositif, et une seconde communique avec un réservoir de matière micro-particulaire au cours de l'utilisation du dispositif, la première et la seconde branche étant disposées l'une par rapport à l'autre de sorte que la production de la dépression dans l'espace de tête lorsque l'orifice de sortie est disposé contre la surface de la peau, provoque le passage d'air de l'atmosphère extérieure à l'espace de tête, à travers la première branche de la ligne de circulation, et l'aspiration de la matière du réservoir, à l'intérieur de la ligne de circulation grâce à un effet de venturi au niveau de la jonction entre la première et la seconde branche de la ligne de circulation.
EP04743253A 2004-01-21 2004-07-05 Dispositif de microdermabrasion Withdrawn EP1706048A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0401550.9A GB0401550D0 (en) 2004-01-21 2004-01-21 A handheld apparatus for use in micro-dermabrasion
PCT/GB2004/002908 WO2005070313A1 (fr) 2004-01-21 2004-07-05 Dispositif de microdermabrasion

Publications (1)

Publication Number Publication Date
EP1706048A1 true EP1706048A1 (fr) 2006-10-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP04743253A Withdrawn EP1706048A1 (fr) 2004-01-21 2004-07-05 Dispositif de microdermabrasion

Country Status (3)

Country Link
EP (1) EP1706048A1 (fr)
GB (2) GB0401550D0 (fr)
WO (1) WO2005070313A1 (fr)

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GB2410191B (en) 2008-06-11
WO2005070313A1 (fr) 2005-08-04
GB0401550D0 (en) 2004-02-25
GB2410191A (en) 2005-07-27

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