WO1994028814A1 - Appareil de recueil et de purification d'air et procede associe - Google Patents

Appareil de recueil et de purification d'air et procede associe Download PDF

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Publication number
WO1994028814A1
WO1994028814A1 PCT/HU1994/000016 HU9400016W WO9428814A1 WO 1994028814 A1 WO1994028814 A1 WO 1994028814A1 HU 9400016 W HU9400016 W HU 9400016W WO 9428814 A1 WO9428814 A1 WO 9428814A1
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WO
WIPO (PCT)
Prior art keywords
air
housing
contaminated
moving
rigid body
Prior art date
Application number
PCT/HU1994/000016
Other languages
English (en)
Inventor
László KUTOR
Original Assignee
Kutor Laszlo
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 Kutor Laszlo filed Critical Kutor Laszlo
Priority to AU70815/94A priority Critical patent/AU7081594A/en
Publication of WO1994028814A1 publication Critical patent/WO1994028814A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G15/00—Operating chairs; Dental chairs; Accessories specially adapted therefor, e.g. work stands
    • A61G15/10—Parts, details or accessories
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G15/00—Operating chairs; Dental chairs; Accessories specially adapted therefor, e.g. work stands
    • A61G15/14—Dental work stands; Accessories therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2218/00—Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2218/001—Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body having means for irrigation and/or aspiration of substances to and/or from the surgical site
    • A61B2218/007—Aspiration
    • A61B2218/008—Aspiration for smoke evacuation

Definitions

  • This invention relates to an air capture, filtration and purification apparatus and method. More particularly, this invention relates to the capture of contaminated air from the proximity of a dental or medical operation or treatment site, the filtration of the captured air to remove solid particles and liquid droplets from the air, and the purification of the captured air to kill bacteria, viruses, and other matter that may transmit disease.
  • dental treatment and operations such as the removal of teeth and the filling of cavities, dentists and oral surgeons remove sections of teeth and bone using high speed drills and other tools. During the removal process, the tools pulverize the teeth and bone into particles of various sizes.
  • Dental hygienists use high speed tools in conjunction with abrasive cleaning agents to clean the teeth.
  • some of the particles generated are small and light enough to form clouds of dust.
  • the particles which usually contain bacteria, viruses and other contaminants, may be inhaled or ingested by the patient and other persons that work in close proximity to the patient. Once inhaled or ingested, the particles can enter the respiratory tract, the oral cavity, and the upper reaches of the gastro-intestinal tract.
  • the smallest of the contaminated particles which are often atomized, are capable of reaching the terminal cells of the lungs. Once introduced into the body, the particles and dust may cause a number of ailments.
  • U.S. Patent 3,768,970 to Malmin discloses a device for sterilizing and controlling aerosol clouds generated during either dental or medical operations.
  • the Malmin device included a large mouthpiece that was placed in the vicinity of the operation site and a remote unit which connected to the mouthpiece via a large flexible intake tube.
  • a blower within the remote unit drew air into the mouthpiece, moved it to the remote unit, and expelled the air from the remote unit.
  • a filter removed particles from the air and an ultraviolet light attempted to purify the air.
  • the Malmin device suffered a number of shortcomings.
  • the mouthpiece was large, cumbersome, not self supporting, could not be selectively positioned, and resultantly inhibited the doctor and the assistant from performing the operation.
  • the intake tube connecting the mouthpiece to the remote unit tended to collect and retain contaminated particles. Air drawn into the remote unit was not pretreated before it passed before the ultraviolet light and therefore the effectiveness of the ultraviolet light was reduced. Further, the ultraviolet light sources were poorly positioned and did not properly sterilize the air. Finally, in addition to being cumbersome, the device required a remote exhaust vent, the added cost of which made the device too expensive for most applications.
  • Another device described in U.S. Patent 4,252,054 to Bakels, included a cabinet with an air intake on the upper surface of the cabinet and also a portable air collector that could be connected to the cabinet via a suction hose. Within the cabinet were components for filtering and sterilizing the air as well as a blower for drawing air into the cabinet through the air intake.
  • an air receiving, filtering and purifying apparatus preferably comprises an air collector, air prefiltering means, a suction tube, a housing, air circulation means, a dehumidifier, at least one air filter, and an air sterilizer.
  • the air collector is self supporting, incrementally positionable, and capable of firmly and unobtrusively resting in close proximity to a portion of a patient's anatomy to selectively draw in contaminated air.
  • the air collector comprises a rigid body and a supporting means.
  • the rigid body includes a first end through which contaminated air is drawn and a second end adapted to sealably attach to the suction tube.
  • the supporting means which connects to the rigid body, facilitates the incremental positioning of the rigid body so that the device may be operating while the doctor or dentist performs his or her work.
  • the air prefiltering means is contained within the rigid body, removes large solid particles and water droplets from the contaminated air, and absorbs a portion of the humidity from the contaminated air that passes through the rigid body.
  • the rigid body and the suction tube may be constructed of disposable material and replaced after each use. The remaining components are contained in a housing.
  • the housing is preferably made of metal and constructed such that the longitudinal axis of the housing orients vertically.
  • the air circulation means draws the contaminated air from the air collector, through the suction tube, and into a first housing opening which sealably attaches to a second end of the suction tube.
  • the air circulation means which is contained within the housing is selectively positioned within the housing to produce low levels of noise.
  • the air circulation means is operable at varying speeds so that the flow of air through the apparatus may be controlled to suit the situation and so that the produced noise may be further reduced when full suction is not needed.
  • the air dehumidifier then dehumidifies the air moving through the housing.
  • the dehumidifier comprises a thermoelectric cooler.
  • a first air filter preferably an electrostatic filter
  • the air sterilizer which preferably comprises a plurality of ultraviolet radiation tubes, sterilizes the dry air moving through the housing.
  • a second air filter filters the air before it exits the housing through a second housing opening.
  • the air collector is self supporting and incrementally adjustable, a doctor or dentist may place the air collector in the optimum location without having to hold it or reposition it during surgery. Further, the air collector may be moved away from its operating position between uses so that it does not otherwise interfere with the operation of the dental chair or operating table. Because the air collector and the suction tube may be constructed of a disposable material, they may be discarded after each use to prevent the spread of disease. However, even if the air collector and the suction tube are not disposable, the air prefiltering device traps a large portion of the water droplets and larger particles and a portion of the humidity contained in the contaminated air, thus leaving fewer particles remaining to contaminate the housing.
  • the apparatus of the present invention includes an air dehumidifier, the air sterilizer efficiently sterilizes the air as it passes through the housing.
  • Prior devices did not include dehumidifiers and the applicant has determined that resultantly, the prior devices poorly and only partially sterilized the contaminated air.
  • the present invention more fully sterilizes the contaminated air than did the prior devices.
  • the capability of the air circulation means to be operated at slower speeds when a large suction volume is not required results in lower noise levels at those times.
  • a major limitation of the prior local air purification devices was the high noise levels that they produced. Prior devices that produced high levels of noises were annoying and could interfere with a doctor's performance during the operation. Resultantly, prior devices were often not used because of the noise problem.
  • the present invention overcomes this limitation.
  • FIGURE 1 is a perspective view of a preferred embodiment of the present invention as used during dental treatment and oral surgery.
  • FIGURE 2 is an enlarged view in perspective of the preferred embodiment of the present invention taken from within circle 2.2 highlighting the air collector and its connection with a dental chair.
  • FIGURE 3 is a partial perspective view of the preferred embodiment of the present invention detailing the housing.
  • FIGURE 4 is the view of FIGURE 3 with a portion of the housing broken away to show the components within the housing.
  • FIGURE 5 is a side view in perspective of the air collector.
  • FIGURE 6 is a rear view in perspective of the air collector.
  • FIGURE 7 is a diagrammatic top view of the air collector detailing the air prefiltering means.
  • FIGURE 8 is a diagrammatic view in perspective of the air prefiltering means
  • FIGURE 9 is a diagrammatical view in perspective detailing how the air collector positions to draw contaminated air away from a patient's mouth without interfering with the work area of the doctor or his assistant.
  • FIGURES 1 through 9 illustrate the principles of the present invention by way of example.
  • an air receiving, filtering and purifying apparatus 10 comprises an air collector 12, air prefiltering means 14, a suction tube 16, a housing 18, air circulation means 20, a dehumidifier 22, at least one air filter 24, and an air sterilizer 26.
  • the air collector 12 is self supporting and incrementally positionable to selectively draw in contaminated air. Further, the air collector 12 is capable of firmly and unobtrusively resting in close proximity to a portion of a patient's anatomy.
  • the air collector preferably comprises a rigid body 28 and an incrementally adjustable supporting means 30.
  • the rigid body 28 includes a first end 34 through which contaminated air is drawn and a second end 36 adapted to sealably attach to the suction tube 16.
  • the supporting means 30 is associated with the rigid body 28 and is for facilitating the incremental positioning of the air collector 12.
  • the supporting means 30 detachably attaches to a dentist's chair 32 or an operating tahle (not shown). Preferably, the supporting means 30 may be moved aside so that the air collector 12 does not interfere with other uses of the dentist's chair or operating table.
  • the rigid body 28 preferably is constructed of polished stainless steel so that it does not accumulate debris and so that it may be easily cleaned.
  • the rigid body 28 is constructed so that the top may be removed for cleaning.
  • the rigid body 28 may be constructed of a disposable material such as rigid paper so that it could be disposed of after each use.
  • the air prefiltering means 14 associated with the rigid body 28 removes large solid particles, water droplets, and a portion of the humidity from the contaminated air as the contaminated air passes through the rigid body.
  • the air prefiltering means 14 includes a prefilter frame 37 which connects to the rigid body first end 34, a long bag 38 which connects to the prefilter frame, and a loose net 39.
  • the long bag 38 includes a plurality of partitions extending longitudinally along the longitudinal axis of the rigid body 28.
  • the bags 38 are constructed of a humidity absorbent material such as silicon gel or a more advanced absorbent and are disposable.
  • the bag's 38 unique shape provides significant cross sectional area to filter large solid particles and water from the contaminated air, and at the same time provide little resistance to air flow.
  • the loose net 39 which is made of nylon or another durable material. The net functions to prevent clothing or other larger objects from entering the air collector 12.
  • the air collector 12 may be selectively positioned so that it is neither in the dentist's work area nor in the assistant's work area but is still in close proximity to a patient's mouth 41.
  • the air collector 12 is capable of adequately removing the particles, debris, and other matter emitted from the patient's mouth 41 without interfering with the work of the dentist and assistant.
  • the air collector 12 could be selectively positioned near on operation site as well.
  • the suction tube 16 which may be constructed of a disposable material in a manner that is known in the art, detachably and sealably connects between the rigid body second end 36 and a first housing opening 40 in the housing 18. Connected in this manner, contaminated air enters the rigid body first end 34, travels through the rigid body 28, exits the rigid body second end 36, travels through the suction tube 16, and enters the first housing opening 40.
  • the housing 18 preferably is constructed of double layer sheet metal, with insulation between the layers to reduce noise, and includes a number of sections that may be removed to clean the components contained within.
  • the air circulation means 20 contained within the housing 18 includes a first circulating fan 42 and a second circulating fan 44.
  • the first 42 and second 44 circulating fans move air in through the first housing opening 40 and out through a second housing opening 46.
  • Each of the circulating fans 42 and 44 is a low noise level fan and is capable of operating at variable speeds.
  • a speed control switch 47 and knob 49 that are mounted on the supporting means 30, and a foot pedal 48 allow the dentist or surgeon to adjust the speed of the fans 42 and 44 simultaneously.
  • the air dehumidifier 22 dehumidifies the air moving through the housing.
  • the air dehumidifier 22 preferably comprises an air baffle 50 for directing the air flowing through the dehumidifier, a thermoelectric cooler 52, a heat sink 54, and a wiper 56.
  • the thermoelectric cooler 52 preferably comprises a plurality of individual thermoelectric cooler chips (not shown) installed in an array such that they form a flat cooled surface.
  • the individual semiconductor chips are model number CP1.4-127-0452 manufactured by MELCOR or equivalents.
  • the semiconductor chips create a heat gradient normal to the chips such that the temperature on the surface of the thermoelectric cooler 52 is as great as 100 degrees fahrenheit lower than the temperature on the opposite side of the thermoelectric cooler. This temperature difference is easily controlled by controlling the supplied current.
  • the heat sink 54 attaches to the opposite side of the thermoelectric cooler 52 and dissipates the heat energy pumped by the thermoelectric cooler. Contaminated air flowing in through the first housing opening 40 is first dehumidified as it follows the path created by the air baffle 50 and passes by the thermoelectric cooler 52.
  • the thermoelectric cooler 52 lowers the temperature of the contaminated air causing condensation to form on the surface of the thermoelectric cooler and resultantly the humidity of the contaminated air to decrease.
  • the wiper 56 operates to remove the condensation from the surface of the thermoelectric cooler thereby increasing the efficiency of the thermoelectric cooler 52. Condensation wiped from the surface of the thermoelectric cooler collects in the condensation pan 58 at the bottom of the housing 18 which preferably contains a disinfectant known in the art and not shown. After the contaminated air passes the surface of the thermoelectric cooler 52 and the humidity of the air is reduced, the air baffle 50 causes the air to pass near the heat sink 54 thereby heating the air.
  • a conventional compression type dehumidifier could also be employed to remove the humidity from the contaminated air.
  • an access opening 59 in the housing 18 provides easy access to the dehumidifier 22 for cleaning and maintenance.
  • the air passes through a first air filter 60.
  • the first air filter 60 is an electrostatic filter of low air flow resistance but with sufficient filtering capability to remove substantially all particles from the air.
  • the electrostatic filter is a model DUST FIGHTER 95 manufactured by DUST FREE, INC. or an equivalent thereof.
  • the first air filter 60 removes approximately 90% to 95% of the solid particles in the contaminated air with little resistance to air flow.
  • the air sterilizer 26 preferably comprises three 253.7 nm wavelength, non ozone producing, ultraviolet radiation tubes 62, preferably model G30T8 tubes manufactured by PHILIPS or an equivalent thereof.
  • the radiation tubes 62 are oriented so that their longitudinal axes are parallel to the longitudinal axis of the housing 18.
  • Reflective walls 64 in the housing preferably constructed of reflectant aluminum, surround the volume associated with the air sterilizer 26 so that the ultraviolet radiation produced by the tubes 62 more efficiently kills the bacteria, virus, and other living matter contained in the air flowing through the air sterilizer.
  • the configuration of the air sterilizer 26 within the housing allows the air to be exposed to the radiation tubes 62 for a sufficient period to kill a large amount of the living matter in the air.
  • the air exiting the air sterilizer 26 is substantially, but not completely sterilized.
  • an access opening 65 in the housing 18 provides easy access to the radiation tubes 26 for cleaning as well as to other components in the housing.
  • the air passes through a second air filter 66 which further removes particles from the air.
  • the second air filter 66 is a DUST EATER model manufactured by PERMATRON or an equivalent thereof. The second filter 66 removes particles which the first filter 60 did not remove and may contain an activated carbon layer for odor removal.
  • a power supply and electronics required for the operation of the apparatus 10 are contained in an electronics control center 69 in the housing.
  • the power supply provides power to all electrical equipment power associated with the apparatus 10 and includes breakers operable for the protection of both the equipment within the housing 12 and for individuals using the apparatus.
  • An important feature of the apparatus 10 of the present invention is that it may also be used as an air purifier to purify the air contained in the room in which the apparatus resides.
  • the apparatus may be used in such a manner by preventing air from entering the first housing opening 40 and by allowing air to enter the housing 18 through an auxiliary housing opening 68. Used in this manner, the apparatus 10 may be used to remove pollen, mold, bacteria, or other foreign material from the air when not in use during an operation.
  • the present invention also includes a method for receiving, filtering and purifying contaminated air drawn from near an operation site.
  • the method includes as a first step selectively collecting the contaminated air from near an operation site using a self supporting air collector capable of firmly and unobtrusively resting in close proximity to a portion of a patient's anatomy.
  • a next step includes prefiltering the air to remove large solid particles and water droplets from the air.
  • a further step includes dehumidifying the air.
  • a still further step includes filtering the air at least once to remove small solid particles from the air.
  • a final step includes sterilizing the dry air.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgery (AREA)
  • Otolaryngology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)

Abstract

Appareil destiné à la purification d'air prélevé à proximité d'un site opératoire ou stomatologique. L'appareil comporte un collecteur (12), un dispositif de préfiltration (14), un tube d'aspiration (16), un déshumidificateur (22), au moins un filtre à air (60), et un stérilisateur (26). Le collecteur (12), qui recueille l'air à proximité dudit site est un appareil autonome pouvant se déplacer de façon stable et non gênante à proximité immédiate d'une partie donnée de l'anatomie du patient, sans perturber l'activité du médecin, du dentiste ou du praticien. Le tube d'aspiration (16) relie le collecteur d'air (12) à un boîtier (18) où son logés les autres équipements. Un ventilateur silencieux (42) (au moins) aspire l'air par le tube (16), lui fait traverser le déshumidificateur (22), les filtres (60, 66) et le stérilisateur (26) et l'éjecte du boîtier (18). Chacun des équipements oppose une faible résistance au flux d'air, ce qui réduit le bruit. On utilisera de préférence: un déshumidificateur (22) à réfrigération thermoélectrique, des filtres électrostatiques (60, 66) et un stérilisateur à UV (62) dont les tubes sont placés dans un logement (64) fortement réfléchissant. L'invention porte également sur une méthode de recueil/filtrage/stérilisation de l'air contaminé prélevé à proximité d'un site opératoire.
PCT/HU1994/000016 1993-06-01 1994-05-30 Appareil de recueil et de purification d'air et procede associe WO1994028814A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU70815/94A AU7081594A (en) 1993-06-01 1994-05-30 Local air capture and purification apparatus and method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US7057093A 1993-06-01 1993-06-01
US08/070,570 1993-06-01

Publications (1)

Publication Number Publication Date
WO1994028814A1 true WO1994028814A1 (fr) 1994-12-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/HU1994/000016 WO1994028814A1 (fr) 1993-06-01 1994-05-30 Appareil de recueil et de purification d'air et procede associe

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AU (1) AU7081594A (fr)
WO (1) WO1994028814A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2334448A (en) * 1998-02-20 1999-08-25 Lu Li Chou Suction cleaner for dentistry with air purifier
FR2825300A1 (fr) * 2001-04-06 2002-12-06 Li Chou Lu Systeme de traitement des eaux usees et de desinfection par aspiration pour fauteuil de dentiste
WO2011006509A1 (fr) * 2009-07-17 2011-01-20 Technical University Of Denmark Dispositif et procédé de réduction de diffusion de micro-organismes et de matières aéroportées dangereuses pour la santé et/ou de protection contre les micro-organismes et les matières aéroportées dangereuses pour la santé
WO2018093842A1 (fr) * 2016-11-16 2018-05-24 Aerobiotix, Inc. Dispositif de traitement d'air médical
DE202021104023U1 (de) 2020-07-28 2021-10-18 Airvent Légtechnikai Zrt. Luftsterilisierende Vorrichtung
CN113967651A (zh) * 2021-10-27 2022-01-25 湖南大学 一种牙科诊室内体外磨牙兼颗粒物收集处理系统
US11389269B2 (en) 2020-05-11 2022-07-19 AtmenBio, LLC Portable medical grade air purification system
IT202100005459A1 (it) * 2021-03-09 2022-09-09 Claudio Agostinelli Sistema per l’aspirazione e il trattamento di aerosol o aria e la neutralizzazione dei microrganismi patogeni presenti nell’aerosol o aria, metodo per il trattamento di aerosol o aria e dispositivo di captazione di aerosol o aria, in particolare in applicazioni medicali e ancora piu’ in particolare in campo odontoiatrico.
US11712281B2 (en) 2018-10-26 2023-08-01 Buffalo Filter Llc Filtering system, apparatus, and method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3768970A (en) * 1971-12-22 1973-10-30 O Malmin Air sterilizer and control means
US4252054A (en) * 1978-08-30 1981-02-24 Marinus Bakels Dental clean air device
US5047072A (en) * 1988-11-10 1991-09-10 Surgical Laser Products, Inc. Ultraviolet air enhancement and laser plume evacuation method and system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3768970A (en) * 1971-12-22 1973-10-30 O Malmin Air sterilizer and control means
US4252054A (en) * 1978-08-30 1981-02-24 Marinus Bakels Dental clean air device
US5047072A (en) * 1988-11-10 1991-09-10 Surgical Laser Products, Inc. Ultraviolet air enhancement and laser plume evacuation method and system

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2334448A (en) * 1998-02-20 1999-08-25 Lu Li Chou Suction cleaner for dentistry with air purifier
FR2825300A1 (fr) * 2001-04-06 2002-12-06 Li Chou Lu Systeme de traitement des eaux usees et de desinfection par aspiration pour fauteuil de dentiste
DE10130721A1 (de) * 2001-04-06 2003-08-07 Li-Chou Lu Verfahren zum Sammeln und zur Behandlung medizinischen Abfalls und Abwassers für Zahnarztstuhl
DE10130721B4 (de) * 2001-04-06 2006-08-03 Lu, Li-Chou, Hsin Chuang Vorrichtung zum Sammeln und Reinigen des an einem zahnärztlichen Behandlungsplatz anfallenden medizinischen Abwassers und zur Verbesserung der Raumluft
WO2011006509A1 (fr) * 2009-07-17 2011-01-20 Technical University Of Denmark Dispositif et procédé de réduction de diffusion de micro-organismes et de matières aéroportées dangereuses pour la santé et/ou de protection contre les micro-organismes et les matières aéroportées dangereuses pour la santé
US9310088B2 (en) 2009-07-17 2016-04-12 Technical University Of Denmark Device and method for reducing spread of microorganisms and airborne health hazardous matter and/or for protection from microorganisms and airborne health hazardous matter
WO2018093842A1 (fr) * 2016-11-16 2018-05-24 Aerobiotix, Inc. Dispositif de traitement d'air médical
US10702435B2 (en) 2016-11-16 2020-07-07 Thunderhill Investments, LLC Medical air treatment device
US11185457B2 (en) 2016-11-16 2021-11-30 Aerobiotix, Inc. Medical air treatment device
US11712281B2 (en) 2018-10-26 2023-08-01 Buffalo Filter Llc Filtering system, apparatus, and method
US11389269B2 (en) 2020-05-11 2022-07-19 AtmenBio, LLC Portable medical grade air purification system
US11974888B2 (en) 2020-05-11 2024-05-07 AtmenBio, LLC Portable air purification system
DE202021104023U1 (de) 2020-07-28 2021-10-18 Airvent Légtechnikai Zrt. Luftsterilisierende Vorrichtung
IT202100005459A1 (it) * 2021-03-09 2022-09-09 Claudio Agostinelli Sistema per l’aspirazione e il trattamento di aerosol o aria e la neutralizzazione dei microrganismi patogeni presenti nell’aerosol o aria, metodo per il trattamento di aerosol o aria e dispositivo di captazione di aerosol o aria, in particolare in applicazioni medicali e ancora piu’ in particolare in campo odontoiatrico.
CN113967651A (zh) * 2021-10-27 2022-01-25 湖南大学 一种牙科诊室内体外磨牙兼颗粒物收集处理系统

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