Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B08—CLEANING
  • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
  • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
  • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
  • B08B9/027—Cleaning the internal surfaces; Removal of blockages
  • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
  • B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
  • A61C17/02—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication
  • A61C17/022—Air-blowing devices, e.g. with means for heating the air
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C5/00—Filling or capping teeth
  • A61C5/40—Implements for surgical treatment of the roots or nerves of the teeth; Nerve needles; Methods or instruments for medication of the roots
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
  • A61C5/00—Filling or capping teeth
  • A61C5/50—Implements for filling root canals; Methods or instruments for medication of tooth nerve channels
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
  • A61L12/00—Methods or apparatus for disinfecting or sterilising contact lenses; Accessories therefor
  • A61L12/02—Methods or apparatus for disinfecting or sterilising contact lenses; Accessories therefor using physical phenomena, e.g. electricity, ultrasonics or ultrafiltration
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
  • A61L12/00—Methods or apparatus for disinfecting or sterilising contact lenses; Accessories therefor
  • A61L12/08—Methods or apparatus for disinfecting or sterilising contact lenses; Accessories therefor using chemical substances
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B08—CLEANING
  • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
  • B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
  • B08B7/02—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by distortion, beating, or vibration of the surface to be cleaned
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B08—CLEANING
  • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
  • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B08—CLEANING
  • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
  • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
  • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
  • B08B9/027—Cleaning the internal surfaces; Removal of blockages
  • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
  • B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
  • B08B9/0325—Control mechanisms therefor
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B08—CLEANING
  • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
  • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
  • B08B9/08—Cleaning containers, e.g. tanks

Definitions

• the invention relates to a method and a device for a type of intervention filling, cleaning, uncoupling, in a closed enclosure or near-close. It is particularly adapted to cavities of complex shape and / or difficult to access. It offers multiple applications including building, chemical or food production facilities, medical and dental.
• Such a filling solution is described in document EP0538200 in the dental field, for which the closed enclosure is the inside of a tooth that must be filled with a filling paste.
• This solution consists of a suction mechanism of the volume of the tooth allowing its filling at the same time with a paste.
• Such a method has the disadvantages of a long filling if the volume is important, not to allow filling of all the interstices of the cavity and residual air pockets remain locked.
• a second solution in the dental field is described in US4021921.
• This solution consists of introducing a liquid inside a tooth using a pump pushing the liquid.
• This solution also provides the addition of gas bubbles and the use of pressure oscillations combined with periodic pulses, implemented by a pump control allowing it to perform repeated cycles of start-up and operation. 'stop.
• This solution has the advantage of improving the cleaning and filling effect that would be obtained by a simple circulation of liquid under pressure.
• the proposed device has the disadvantage of being complex, to present a voluminous mechanics and to be difficult to implement and control because of the particular operation of the pump.
• the solution does not well eliminate all the air pockets of the cavity and filling and cleaning are insufficient.
• a general object of the invention is to provide a method and a device that allow a delicate intervention type cleaning, filling, uncorking, in a closed cavity difficult to access.
• the object of the invention is to provide a method and a device suitable for filling, cleaning and uncapping operations, which make it possible to obtain a good result and in a reduced time.
• An object of the invention is also to provide a method and a device adapted to different areas such as the building, chemical or food installations, the cavity may be a liquid transport conduit or a tank, or as the medical and the dental cavity, the cavity being an artery or a tooth.
• An object of the invention is to provide a simple method and device, small and inexpensive.
• the concept of the invention consists in subjecting the enclosure, within which the intervention is necessary, to cycles of sudden pressure relaxations, resulting in a particular fluid, gaseous, liquid or even pasty movement, within the enclosure, which has the effect of cleaning, filling, unclogging, the enclosure.
• the delicate intervention device in a closed enclosure according to the invention comprises a conduit whose first end is intended to penetrate within the enclosure, the conduit being further connected to:
• a pressure reduction means whose function is to cause a pressure drop within the chamber
• the pressure decreasing means can be implemented by a circulation of air causing a pressure drop by venturi effect.
• the device can be connected with a waste pipe.
• the device may comprise a ball pushed towards the opening by a spring, in order to put or not to bring the enclosure into contact with the outside through the opening of the device.
• the device may comprise a conduit whose one end is intended to penetrate within the enclosure, and the other end is adapted to a connection with another conduit connected to a fluid reservoir.
• the device may comprise a silicone or elastomer nozzle penetrated by the end of the tube or tubes intended to penetrate into the enclosure, the silicone tip being adapted to its positioning in an opening of the enclosure.
• One of the two ducts passing through the silicone or elastomer tip may protrude by a longer length so as to penetrate deeper into the enclosure.
• This device can be used for dental care. Alternatively, it can be used to clean objects such as a contact lens.
• the invention also relates to a method of delicate intervention in a closed enclosure comprising the repetition of the two following steps:
• the process of delicate intervention in a closed enclosure may comprise a circulation of air in order to cause a pressure drop in the duct by the venturi effect.
• the tricky intervention method may comprise, in parallel with the two preceding steps, a step of supplying the enclosure with fluid via a conduit.
• FIG. 1 shows a schematic view illustrating the concept of the invention
• FIG. 2 represents a schematic view of a variant of a device according to the concept of the invention
• Figure 3 shows a variant of the diagram of Figure 1
• FIG. 4 represents a perspective view of a device according to the invention in a dental application
• Figure 5 shows a detail view of the device of Figure 4
• FIG. 6 represents the curve of the pressure as a function of time obtained with the device of FIG. 4.
• Figures 1 to 3 show schematic devices illustrating the concept of the invention.
• FIG. 1 illustrates a closed cavity 1 on which it is necessary to intervene, for a cleaning operation.
• the device according to the invention comprises a pressure reduction means 2 connected to the cavity by a first opening, this means being a pump in this implementation mode, a means of sudden release of the pressure 3 connected to the enclosure 1 by a second opening, this means being a valve-type expansion device in this embodiment and this means being connected to a reservoir containing a fluid 4, air at atmospheric pressure in this embodiment.
• the cavity is shown schematically rectangular. It could however have any complex shape, and in particular to present corners hard to reach.
• the cleaning method of the invention implemented using the above device, comprises the following essential steps:
• the pressure reduction means 2 may be of the mechanical type, such as a pump, of the hydraulic type, such as a turbine, of the electromechanical type, such as a vibration pump whose operating cycle is sufficiently high to be considered continuous. It operates in a continuous or quasi-continuous manner so that it causes a quasi-permanent type of air flow within the enclosure.
• the function of the expansion device 3 is to cause a sudden increase in the pressure, and may consist of a simple device suddenly bringing the enclosure into contact with the outside at constant pressure, such as air at atmospheric pressure. example. It may consist of a simple mechanical device consisting of a ball, a cylinder or any shaped element adapted to obstruct an opening of the enclosure and connected to a spring, this element being able to be moved so as to release the opening of the speaker when the difference pressure between the inside and outside of the enclosure reaches a value sufficient to oppose the spring force.
• This device can also be based on the elasticity constant of a material that opens a valve when the depression exceeds a certain threshold. This phenomenon causes a sudden change in the quasi-permanent flow. Alternatively, this device can be controlled, the valve being controlled mechanically for example.
• This device can also be used with any fluid 4. It is noted that in the case of a liquid such as water, by nature incompressible, such a device remains effective by the fact that it always remains at least a few bubbles. air within the enclosure, due to the imperfect geometry of the walls of the enclosure, the possible presence of pollutants, solid or liquid, and the possible imperfect sealing of the enclosure, at the openings by example, which allows the device to perform the pressure cycle described above. According to the concept of the invention, the extreme conditions of cavitation are not sought and are not necessary, contrary to the prior art. However, the invention remains compatible with these extreme conditions and nothing would prevent the device from operating under such conditions if certain applications require it.
• Figure 2 shows a schematic view of an alternative embodiment.
• the device further includes means for supplying a fluid 6, water in this implementation mode, by a third opening in the enclosure 1.
• the supply means can be a simple conduit connected to a water tank at a certain pressure advantageously high and constant.
• This device makes it possible to implement the following steps: - reduction of the pressure of the air inside the chamber 1 by means of the suction pump 2 which sucks up the air present in the enclosure ; in parallel, filling the chamber with water from the feed means 5, this filling being favored by the pressure of the water at the inlet and by the suction by the means 2; below a certain threshold pressure, sudden relaxation caused by the valve 3, which consists of the sudden entry of air 4 inside the enclosure and causes the sudden rise in the internal pressure to the enclosure.
• this device combines the action of two complementary fluids, the air that allows a mechanism of pressure drop and sudden relaxation, and water, with a possible addition of liquid cleaning product, which may have an effect more effective cleaning than air alone and effectively contributes to the transmission of shock waves.
• liquid cleaning product which may have an effect more effective cleaning than air alone and effectively contributes to the transmission of shock waves.
• any other combination of fluids, liquid, gaseous or pasty, is possible, as well as the use of a liquid comprising solid particles in suspension.
• This device and method thus make it possible to obtain an improved cleaning. It is possible to exploit the principles of the invention in a secondary application to clean an object that would be positioned in the enclosure.
• this system is also perfectly adapted to the unclogging of the enclosure, by the fact that the filling is improved and makes it possible to reach areas with difficulty. accessible with a simple flow, and by the fact that the brutal depressions make it possible to transfer shocks which have a positive effect on the uncoupling action.
• FIG. 3 diagrammatically represents a variant of the device of FIG. 1, which has the advantage of requiring only a single opening in the enclosure 1 to implement the functions of reducing the pressure and releasing the pressure suddenly.
• the pressure release device 3 in the form of a valve, is connected at an opening of the outlet duct of the pressure reduction mechanism.
• Figure 4 shows a particular device 10 suitable for dental care.
• this device comprises two ducts 11 and 12 passing through a frustoconical silicone tip 13 placed in an opening 14 of a tooth 15 so as to penetrate into the cavity 1 of the tooth.
• the duct 11 participates in the pressure reduction function while the duct 12 is a fluid supply duct 6.
• the supply duct 12 is more penetrating in order to avoid the potential interactions between the two. conduits (11 and 12) which could for example cause the direct suction of the fluid 6 through the conduit 11 as it leaves the conduit 12.
• the plug 13 is a simple silicone plug pressed into an opening 14 of the tooth, which is especially maintained in place in the operating mode by the low pressure within the cavity 1.
• the device 10 further comprises a conduit 16 which can be connected to an external air circulation duct 17, such as those available in hospital environments.
• This duct 16 joins the end of the duct 11 at an outlet duct 18 of larger diameter.
• This construction allows the conduit 16 to cause a pressure decrease at the end of the duct 11 by venturi effect.
• This geometry is dimensioned to allow the device to operate over a pressure range.
• the duct 11 and the duct 16 thus fulfill the function of pressure reduction 2 as illustrated in FIGS. 1 to 3.
• another means of pressure reduction could be used at the end of the duct 11, like a pump suction.
• the materials discharged through the conduit 11 are guided by the conduit 18 which can be connected to a conduit 19 leading to a hygienic waste recovery device.
• a conduit 20 is connected on the one hand to the conduit 11 and on the other hand to a ball system 22 and spring 21 whose operation has been described above.
• the spring 21 is compressed under the pressure of the outside air which ends up penetrating brutally into the duct 20 through the opening 23 and then into the cavity 1 of the tooth through the duct 11, causing a sudden increase in pressure.
• the ball 22 is then pushed again by the spring 21 so as to plug the opening to the outside.
• This assembly composed of the conduit 20, the ball 21, the spring 22 and the opening 23 implements the function of sudden release of the pressure.
• the duct 12 is connected at its end to a duct 24 connected to a reservoir containing the fluid 6. This assembly represents the supply device 5.
• This device 10 comprises a shell 25 to contain and protect the different ducts.
• This shell comprises an outlet intended for the tooth and more precisely the two ends of the ducts 11 and 12.
• This shell comprises four other connections to the outside to allow the ducts 16, 18, 12, 20 to be connected as described herein. -above.
• This device makes it possible, on the one hand, to clean the cavity 1 of the tooth with the aid of a cleaning fluid 6. It also makes it possible to fill this cavity with a paste by placing it in the place of the cleaning fluid.
• This device makes it possible to reach the pressure curve shown in FIG. 6 within the cavity of tooth 1. In a first phase, the pressure decreases continuously and then, in a second phase, it decreases goes back abruptly, that is to say in a very short time, at atmospheric pressure.
• this device can operate in other particular conditions in which there is a change of state of a fluid, in which there are cavitation phenomena. It remains compatible with the addition of complementary components such as pressure sensors, devices such as a transducer in contact with the fluid or immersed in the cavity in order to add additional vibratory and / or thermal phenomena, of the ultrasonic type, for example.
• complementary components such as pressure sensors, devices such as a transducer in contact with the fluid or immersed in the cavity in order to add additional vibratory and / or thermal phenomena, of the ultrasonic type, for example.
• the aspirated material does not go through all the main functions of the device but is directed towards a waste collector; it only works with a simple gas supply and possibly a fluid supply. It does not require significant energy; it starts alone by its filling properties.

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• Health & Medical Sciences (AREA)
• Engineering & Computer Science (AREA)
• Epidemiology (AREA)
• Veterinary Medicine (AREA)
• Public Health (AREA)
• General Health & Medical Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• Life Sciences & Earth Sciences (AREA)
• Mechanical Engineering (AREA)
• Dentistry (AREA)
• Oral & Maxillofacial Surgery (AREA)
• Surgery (AREA)
• Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
• Neurosurgery (AREA)
• Neurology (AREA)
• Biomedical Technology (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
• Cleaning By Liquid Or Steam (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=34948159

Family Applications (1)

Country Status (9)

Families Citing this family (27)

Family Cites Families (16)

• 2004
  • 2004-06-11 FR FR0406331A patent/FR2871395B1/fr not_active Expired - Fee Related
• 2005
  • 2005-06-09 WO PCT/IB2005/001620 patent/WO2006008592A1/fr active Application Filing
  • 2005-06-09 US US11/629,366 patent/US8317514B2/en active Active
  • 2005-06-09 CN CN2005800241628A patent/CN1988968B/zh not_active Expired - Fee Related
  • 2005-06-09 RU RU2007101159/12A patent/RU2369451C2/ru not_active IP Right Cessation
  • 2005-06-09 JP JP2007526591A patent/JP4620735B2/ja not_active Expired - Fee Related
  • 2005-06-09 KR KR1020077000650A patent/KR101218802B1/ko not_active IP Right Cessation
  • 2005-06-09 EP EP05752378A patent/EP1753551A1/fr not_active Withdrawn
  • 2005-06-09 CA CA2570906A patent/CA2570906C/fr not_active Expired - Fee Related

Non-Patent Citations (1)

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