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WO1992016250A1 - Dispositif et procede de filtrage respiratoire - Google Patents

Dispositif et procede de filtrage respiratoire Download PDF

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Publication number
WO1992016250A1
WO1992016250A1 PCT/US1991/001968 US9101968W WO9216250A1 WO 1992016250 A1 WO1992016250 A1 WO 1992016250A1 US 9101968 W US9101968 W US 9101968W WO 9216250 A1 WO9216250 A1 WO 9216250A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
housing
patient
air inlet
filter
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.)
Ceased
Application number
PCT/US1991/001968
Other languages
English (en)
Inventor
Thomas V. Choate
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to PCT/US1991/001968 priority Critical patent/WO1992016250A1/fr
Publication of WO1992016250A1 publication Critical patent/WO1992016250A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/0087—Environmental safety or protection means, e.g. preventing explosion
    • A61M16/009—Removing used or expired gases or anaesthetic vapours
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/0087—Environmental safety or protection means, e.g. preventing explosion
    • A61M16/009—Removing used or expired gases or anaesthetic vapours
    • A61M16/0093—Removing used or expired gases or anaesthetic vapours by adsorption, absorption or filtration
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M11/00—Sprayers or atomisers specially adapted for therapeutic purposes
    • A61M11/06—Sprayers or atomisers specially adapted for therapeutic purposes of the injector type
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
    • A61M16/0816—Joints or connectors
    • A61M16/0825—Joints or connectors with ball-sockets

Definitions

  • aerosols produced by sputum induction , bronchoscopy and suctioning patients with artificial airways also may lead to the airborne transmission of diseases to other persons and staff breathing the same air. Therefore, it is desirable to remove an infectious aerosol produced by patients and also to remove airborne drug particles which may be produced when patients are treated with aerosolized forms of drugs.
  • the medical treatments involving enhanced coughing or aerosol drug treatment of patients is carried out in rooms of adequate fresh air ventilation so as to decrease the probability of transmission .
  • adequate ventilation alone cannot eliminate the risk of airborne transmission .
  • booth approach such as a enclosed chamber
  • booth usually comprises an enclosed chamber having a seat for the patient and a back panel wall against which* the patient sits and includes a prefilter, a blower and a high efficiency particulate filter.
  • the back panel includes on its back portion a ITV tube light to enclose a duct-like space and whereby on activation of the air blower, the air is drawn through the prefilter into the chamber while the patient is undergoing the aerosol treatment up over the back panel and through the duct-like space and exposed to the UV rays and through the hepafilter and then discharged into the environment.
  • the booth approach may be satisfactory in some respects, the booth approach is not portable, thus it cannot be used for bedsides or non-ambulatory patients, and further is more expensive. More particularly, after treatment of the patient the booth still remains contaminated and thus there must be a period of time before the next patient can enter the enclosed booth.
  • the invention relates to a respiratory filter apparatus and method for reducing the risk of airborne disease transmission from the respiratory effluent of a patient.
  • the invention concerns a high efficiency, particulate, portable respiratory filter apparatus employing a disposable face cone used by a patient undergoing nebulizer treatment which is likely to lead to enhanced coughing of a patient.
  • the invention relates to a high efficiency, respiratory filter apparatus which is designed to reduce the risk of airborne disease transmission , such as hepatitis or tuberculosis, induced from the respiratory effluent of a patient, such as by enhanced coughing of a patient during aerosol nebulizing treatment.
  • the respiratory filter apparatus comprises a housing having an air inlet and an air outlet and which housing includes a motor blower designed to draw air into the air inlet and to discharge air from- the air outlet.
  • the apparatus includes a high efficiency, particulate filter and optionally as well an absorbent type filter, such as a charcoal filter, to absorb chemicals , such as aerosol drugs or liquid droplets, and a particulate material within the housing with one or more filters positioned within the housing to filter air between the air inlet and the air outlet.
  • the filter apparatus also includes a tube, typically a flexible tube, say two to four inches in diameter, having a one and an other end with the one end in an air passage incommunication with the air inlet in the housing.
  • a disposable face cone such as a paper or plastic, truncated face cone, is employed and secured either by clamping or fitting over the other end of the tube, and with the base of the cone extending outwardly from the other end of the tube and of sufficient size and shape to generally encompass the face of the patient using the filtering apparatus so as to gather any patient effluent, so that any respiratory effluent from the patient whose face is positioned in the face mask is drawn by the air stream from the face cone into the air inlet and through the filters to the air outlet to discharge safely into the environment.
  • the respiratory filter apparatus of the invention is also designed to include the employment with the face cone of a nebulizing system, and in particular, as a nebulizing chemical holder device as has been determined in many patients, particularly elderly patients, find it difficult to hold the nebulizing chemical holder while employing the nebulizer.
  • the nebulizer holder may include an extending rod and nebulizer container holder in which to put the chemicals to be nebulized, and with the nebulizing system adapted to fit within the face cone so that during the nebulizing aerosol treatment of the patient, which tends to induce coughing, on coughing the sputum or respiratory effluent from the patient will be drawn by the air flowing stream into the disposable face cone and the aerosols into the hepafilter and the housing.
  • nebulizing systems employ an air compressor with a connecting tube extending into the nebulizing solution and if desired, the air compressor in use with the nebulizing system may be used or may also be placed within the housing for use to make a compact package.
  • the face mask comprises a truncated cone made of a disposable, inexpensive material , such as paper, non-woven fibrous material , such as polypropylene or polyethylene, which may be coated or uncoated or a solid, thin plastic type material , all of which should be inexpensive and disposable and capable of being sanitized.
  • a disposable, inexpensive material such as paper, non-woven fibrous material , such as polypropylene or polyethylene, which may be coated or uncoated or a solid, thin plastic type material , all of which should be inexpensive and disposable and capable of being sanitized.
  • the short end of the face cone may be slipped on the other end of the tube with a tight fit, or as desired may be clamped.
  • the inner surface of the face cone should extend slightly inwardly and about the interior surface of the tube so as not to contaminate the inlet tube.
  • the respiratory filter apparatus may include a right angle or angled swivel connector connecting the air inlet in the housing to the one end of the flexible tubing so that the flexible tubing elbow may be swung around and positioned to meet the patient's need, either sitting or at bedside.
  • the filter apparatus typically has casters that roll so it may be easily removed and operated at the bedside of a patient.
  • the patient who is subject to coughing places his face within the disposable face cone during the coughing spells and the motor blower is turned on so as to blow the aerosol contaminated sputum into and toward the hepatite filter.
  • a patient being treated with an aerosol nebulizing system employing the nebulizing solution within the face mask, so that as the nebulizing solution induces coughing by the patient, the air flow draws the aerosol particles away from the outside environment and into the other end of the tube into the hepa-type filter.
  • the drawing is a schematic, illustrative, partially sectionalized drawing of a high efficiency respiratory filter apparatus of the invention in use by a patient.
  • a hepafilter portable nebulizer apparatus having a housing 10 having an upper chamber 12 and a lower chamber 14 with an outlet 16 for exhaust, provided with a filter 18 and a blower 20 for blowing air out of the outlet 16 and drawing air into the upper chamber 12.
  • the respiratory apparatus includes a plurality of wheels 22 positioned on the base of the lower chamber 14 for the portable movement of the apparatus to a bedside location in a patient 's room, and the upper chamber 12 is connected to the lower chamber by a plurality of hinges 24 for movement between a closed filtration position in air-tight cooperation with lower chamber 14 and an open filter removal position to permit access to the interior space of the upper chamber 12 wherein a hepafilter of corrugated construction barrier type filter is removably disposed extending across the width of the upper chamber 12.
  • the upper chamber includes a swivel base 30 fitting disposed in the central top portion thereof for rotatably connecting an upwardly extending elbow 28 of hollow tubular construction, having a 90° bend, formed of resilient material having a one end engaged in the swivel base 30 and an other end for receiving a flexible tube 32 formed of accordion type vacuum hose having an outlet end and an inlet end, the inlet end having a flange 34 being adapted to engage the conically shaped disposable face cone 36 within which is disposed a nebulizer 38.
  • the face cone 36 is constructed of a barrier plastic material , is conically shaped having a small diameter end for engaging the flange 34 and a large diameter end for receiving the nebulizer mounted on a separate, spaced apart holder 46.
  • the nebulizer is constructed to produce an aerosol , medication-containing mist responsive to compressed air being introduced at the bottom of said nebulizer via a flexible air line 42 connected to an air compressor 40 located remotely to the respiratory filter apparatus and which supplies air under pressure to the nebulizer to create an aerosol to be inhaled by the patient.

Landscapes

  • Health & Medical Sciences (AREA)
  • Anesthesiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Environmental Sciences (AREA)
  • Emergency Medicine (AREA)
  • Pulmonology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)

Abstract

L'invention décrit un dispositif et un procédé de filtrage respiratoire servant à diminuer les risques de transmission de maladies véhiculées par l'air et provenant des expirations ou des expectorations d'un malade. Ledit dispositif comprend un boîtier (10) possédant une entrée d'air et une sortie d'air (16), un ventilateur à moteur (20) servant à aspirer l'air dans l'entrée et à l'évacuer par la sortie (16), un filtre solide à particules (26) à efficacité élevée situé à l'intérieur du boîtier, pour filtrer l'air circulant entre l'entrée et la sortie, un tube souple (32) comportant deux extrémités dont l'une est reliée à l'entrée d'air du boîtier et dont l'autre est un cône facial tronqué et jetable (36) conçu pour s'adapter au visage du malade, ainsi qu'éventuellement, à l'autre extrémité, un support (46) servant à maintenir un fluide de nébulisation destiné à être introduit dans les poumons du malade. De ce fait, les expirations et les expectorations du malade, ainsi que le fluide de nébulisation, sont aspirés dans le cône facial jetable par l'air circulant de l'entrée à la sortie, tout en réduisant la transmission microbienne de maladies véhiculées par la toux du malade, telles que la tuberculose transmise par l'air.
PCT/US1991/001968 1991-03-25 1991-03-25 Dispositif et procede de filtrage respiratoire Ceased WO1992016250A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US1991/001968 WO1992016250A1 (fr) 1991-03-25 1991-03-25 Dispositif et procede de filtrage respiratoire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1991/001968 WO1992016250A1 (fr) 1991-03-25 1991-03-25 Dispositif et procede de filtrage respiratoire

Publications (1)

Publication Number Publication Date
WO1992016250A1 true WO1992016250A1 (fr) 1992-10-01

Family

ID=22225408

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1991/001968 Ceased WO1992016250A1 (fr) 1991-03-25 1991-03-25 Dispositif et procede de filtrage respiratoire

Country Status (1)

Country Link
WO (1) WO1992016250A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2926729A1 (fr) * 2008-01-29 2009-07-31 Air Liquide Recipient mobile de traitement in situ de gaz anesthesiques expires par un patient.
CN114392433A (zh) * 2013-12-17 2022-04-26 瑞思迈私人有限公司 呼吸压力治疗系统

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US612295A (en) * 1898-10-11 Inhaler
US1170526A (en) * 1915-03-06 1916-02-08 Wallace H Gaither Apparatus for purifying air.
US1979981A (en) * 1932-01-02 1934-11-06 Elmer I Mckesson Breathing therapy apparatus
US3068856A (en) * 1958-02-14 1962-12-18 Forrest M Bird Fluid control device
US3506003A (en) * 1966-10-11 1970-04-14 Warren B Gregory Heated medicinal vaporizer
US3745991A (en) * 1971-02-22 1973-07-17 Champion Spark Plug Co Environmental contamination control device
US3858615A (en) * 1972-12-11 1975-01-07 Puritan Bennett Corp Flexible hose construction
US4386948A (en) * 1979-12-20 1983-06-07 American Hospital Supply Corporation Filter drive
WO1988009205A1 (fr) * 1987-05-27 1988-12-01 Hoelter Heinz Procede, filtre et dispositif d'approvisionnement en air inhale de qualite amelioree

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US612295A (en) * 1898-10-11 Inhaler
US1170526A (en) * 1915-03-06 1916-02-08 Wallace H Gaither Apparatus for purifying air.
US1979981A (en) * 1932-01-02 1934-11-06 Elmer I Mckesson Breathing therapy apparatus
US3068856A (en) * 1958-02-14 1962-12-18 Forrest M Bird Fluid control device
US3506003A (en) * 1966-10-11 1970-04-14 Warren B Gregory Heated medicinal vaporizer
US3745991A (en) * 1971-02-22 1973-07-17 Champion Spark Plug Co Environmental contamination control device
US3858615A (en) * 1972-12-11 1975-01-07 Puritan Bennett Corp Flexible hose construction
US4386948A (en) * 1979-12-20 1983-06-07 American Hospital Supply Corporation Filter drive
WO1988009205A1 (fr) * 1987-05-27 1988-12-01 Hoelter Heinz Procede, filtre et dispositif d'approvisionnement en air inhale de qualite amelioree

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2926729A1 (fr) * 2008-01-29 2009-07-31 Air Liquide Recipient mobile de traitement in situ de gaz anesthesiques expires par un patient.
WO2009095605A3 (fr) * 2008-01-29 2009-11-05 L'air Liquide, Société Anonyme pour l'Étude et l'Exploitation des Procédés Georges Claude Récipient mobile de traitement in situ de gaz anesthésiques expirés par un patient
CN114392433A (zh) * 2013-12-17 2022-04-26 瑞思迈私人有限公司 呼吸压力治疗系统

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