WO1987001599A1 - Soufflante d'un melange d'oxygene/air pour soins respiratoires - Google Patents

Soufflante d'un melange d'oxygene/air pour soins respiratoires Download PDF

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Publication number
WO1987001599A1
WO1987001599A1 PCT/US1986/001919 US8601919W WO8701599A1 WO 1987001599 A1 WO1987001599 A1 WO 1987001599A1 US 8601919 W US8601919 W US 8601919W WO 8701599 A1 WO8701599 A1 WO 8701599A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
oxygen
pressure
patient
respiratory care
Prior art date
Application number
PCT/US1986/001919
Other languages
English (en)
Inventor
Anthony C. De Vuono
Richard Razgaitis
Original Assignee
Battelle Development Corporation
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 Battelle Development Corporation filed Critical Battelle Development Corporation
Publication of WO1987001599A1 publication Critical patent/WO1987001599A1/fr

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. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/12—Preparation of respiratory gases or vapours by mixing different gases
    • A61M16/122—Preparation of respiratory gases or vapours by mixing different gases with dilution
    • A61M16/125—Diluting primary gas with ambient air
    • 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. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0057—Pumps therefor
    • A61M16/0066—Blowers or centrifugal pumps
    • 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. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • 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
    • A61M2202/00—Special media to be introduced, removed or treated
    • A61M2202/02—Gases
    • A61M2202/0208—Oxygen
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/82—Internal energy supply devices
    • A61M2205/8218—Gas operated

Definitions

  • the inven ⁇ tion is a method and apparatus for diluting a high-pres ⁇ sure oxygen stream with ambient air.
  • the invention comprises a device for causing high-pressure oxygen to do mechanical work to pump low pressure air and then mixing selected portions of the air and oxygen into a therapeutic mixture.
  • the invention comprises a gas turbine and blower coupled for rotation, means for directing a high-pressure oxygen stream to rotate the tubine, a source of air in communication with the blower such that the air is pumped by the blower upon rotation of the turbine, and means for mixing selectable portions of the oxygen stream and pumped air for delivery to the patient.
  • Fig.1 is a schematic view of the turbine/blower device according to the invention.
  • Fig.2 is a sectional elevation view through the internal parts of the turbine/blower device.
  • Fig. 3 is a side view of the device in Fig. 2 looking at the turbine.
  • the present device provides for the pumping of air or air/oxygen mixture at up to about 50 1pm and a pressure equal to 2-3 inches of water. This enables the use of a medium back pressure closed mask and small diameter delivery tube.
  • the small quantities of gas e.g. 1-2 1pm
  • the back pressure capability allows small— bore-tubing to be used which results in high gas velo- cities preventing rainout. It is also now possible to filter the gas (which requires a pressure drop) and to add antibiotics to the patient gas (since it is directed to a closed mask) .
  • Fig. 1 shows a schematic of one embodiment of the invention.
  • the aspirator device 1 comprises an oxygen turbine 2 mounted for rotation with a blower 3 through shaft 9. The turbine may be rotated by impulse or reaction by the oxygen stream entering through an orifice 4 and exiting through outlet 5.
  • An impulse turbine is shown in the Figure.
  • the blower pumps room air through entrance 6 out exit 7.
  • Valve 8 allows a selectable portion of the air to be dumped through line 12 and a selected portion to be directed to the patient through delivery hose 11.
  • Valve 10 allows spent oxygen from the turbine to be dumped through line 13 or delivered to the patient through line 11.
  • FIGs. 2 and 3 show more detail of the turbine/- blower embodiment.
  • a turbine housing consists of a circu ⁇ lar front plate 21 joined to a back container 23.
  • the blower housing 25 is fixed to the back container 23 by convenient means.
  • Shaft 24 is fixed to the front plate and extends axially through the turbine housing into the blower housing.
  • a cylindrical bearing 26 is rotatable on the shaft 24.
  • Turbine 22 and blower 27 are fixed for rotation on the bearing 26.
  • Oxygen orifice 28 directs the oxygen stream against the turbine blades.
  • Oxygen exit 29 exhausts the spent oxygen.
  • Air entrance 30 on the blower housing is in communication with room air to pump air through the device and out air outlet 31.
  • the turbine is preferably directly coupled to the blower without gears. It preferably has single stage, backward-curved blades though other configurations may also be used.
  • the blower is preferably a conventional, center-draw forward-blade fan. Typically, an orifice 0.2-0.5 mm in diameter can deliver 1-2 1pm oxygen to the turbine and rotate it at up to about 12,000 rpm delivering air at about 50 1pm and 3 inches of water back pressure.
  • the aspirator is preferably disposable and made of plastic parts (except for the bearings and shaft).
  • oxygen from the turbine could be mixed with the compressed air.
  • the turbine portion may be designed to be reusable, allowing for use of better con ⁇ struction materials.
  • the blower would be disposable since it has direct communication to the patient.
  • the oxygen to the turbine would be bled from the main oxygen stream (only 1-2 1pm are needed) and any oxygen requirements for mixing with the air would be met with fresh oxygen from the main stream.
  • the main oxygen stream could enter the compressed gas downstream of the blower or could enter the blower with the ambient air at the air inlet. Liquid or a liquid/medicament mixture may be added at any convenient point.
  • a con ⁇ ventional mist generator could be used to supply moisture to the air inlet on the blower.
  • the main oxygen stream could also be used to lift and nebulize liquid in the conventional way for introduction to the blower air inlet or to the compressed gas downstream of the device.
  • the invention has been described particularly with respect to a turbine/blower device. In the broader sense, however, the invention envisions the use of any convenient device for converting the energy in the pres ⁇ surized oxygen into useful mechanical energy to increase the pressure of low pressure, ambient air.
  • a reciprocating positive displacement pump, pressurized bottle, gear pump, hydraulic multiplier, vibrating mem- brane, or shear drag turbine could be used in place of the turbine.
  • the oxygen and air may be kept separate so that air itself may be delivered to the patient under slight pressure or a mixture of air and oxygen may be delivered.
  • An aspirator device such as shown in Figs.2 and 3 was constructed.
  • a 7.5 cm diameter turbine with back ⁇ ward-curved, single-stage blades was fixed in a housing.
  • the housing back was made of aluminum while the face plate was a clear polycarbonate.
  • the oxygen nozzle was about 0.4 mm in diameter.
  • the turbine was mounted on a shaft and a porous bronze bearing.
  • the blower had a 14 CFM output.
  • the impeller was contained in a light polycarbonate housing and coupled to the turbine through the bearing.

Landscapes

  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

Dispositif pour soins respiratoires utilisant de l'oxygène sous pression pour pomper vers le patient un mélange d'oxygène/air. Le dispositif comprend une turbine et une soufflante couplées. L'oxygène sous pression entraîne la turbine qui pompe de l'air à travers la soufflante. L'oxygène peut être mélangé avec l'air dans des rapports sélectionnés et délivré au patient. Des gouttelettes peuvent être ajoutées à l'oxygène, à l'air ou au mélange, en amont ou en aval du dispositif ou à l'intérieur de celui-ci.
PCT/US1986/001919 1985-09-23 1986-09-15 Soufflante d'un melange d'oxygene/air pour soins respiratoires WO1987001599A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US77883885A 1985-09-23 1985-09-23
US778,838 1985-09-23

Publications (1)

Publication Number Publication Date
WO1987001599A1 true WO1987001599A1 (fr) 1987-03-26

Family

ID=25114548

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1986/001919 WO1987001599A1 (fr) 1985-09-23 1986-09-15 Soufflante d'un melange d'oxygene/air pour soins respiratoires

Country Status (4)

Country Link
EP (1) EP0239615A1 (fr)
JP (1) JPS63500988A (fr)
CA (1) CA1279548C (fr)
WO (1) WO1987001599A1 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0390288A1 (fr) * 1989-03-30 1990-10-03 Hosta B.V. Dispositif de direction pour remorque
DE19626924A1 (de) * 1996-07-04 1998-01-08 Epazon B V Gerät zur Bereitstellung eines Atemgases
GB2324122A (en) * 1997-04-09 1998-10-14 Draegerwerk Ag Radial flow compressor for respiration and anaesthetic apparatus
US5848591A (en) * 1996-07-05 1998-12-15 Dragerwerk Ag Respirator with oxygen enrichment
EP1317942A1 (fr) * 2001-12-07 2003-06-11 Fisher & Paykel Healthcare Limited Appareil pour mélanger des gaz
US6805122B2 (en) * 1997-10-01 2004-10-19 Invacare Corporation Oxygen conserving device utilizing a radial multi-stage compressor for high-pressure mobile storage
US7204249B1 (en) * 1997-10-01 2007-04-17 Invcare Corporation Oxygen conserving device utilizing a radial multi-stage compressor for high-pressure mobile storage
US9624918B2 (en) 2012-02-03 2017-04-18 Invacare Corporation Pumping device
CN106860990A (zh) * 2017-03-15 2017-06-20 郑海 一种医用呼吸辅助机
US11401974B2 (en) 2017-04-23 2022-08-02 Fisher & Paykel Healthcare Limited Breathing assistance apparatus
US11534565B2 (en) 2012-12-18 2022-12-27 Fisher & Paykel Healthcare Limited Impeller and motor assembly
US11571536B2 (en) 2011-07-13 2023-02-07 Fisher & Paykel Healthcare Limited Impeller and motor assembly
DE102022002797A1 (de) 2022-08-02 2024-02-08 Rajan Govinda Dosiereinrichtung zur Zugabe wenigstens einer pharmazeutisch wirksamen Substanz zu einem extrakorporal bereitgestellten Atemgas, Gerät zur Bereitstellung eines Atemgases mit einer solchen Dosiereinrichtung und Verfahren

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE893998C (de) * 1951-07-07 1954-09-16 Otto P Braun Geraet fuer kuenstliche Atmung
US3045668A (en) * 1959-01-20 1962-07-24 Invengineering Inc Intermittent positive pressure respirator
GB1041313A (en) * 1963-08-22 1966-09-01 Karl Ivar Edwardh Improvements in and relating to a metering and mixing apparatus for liquids and/or gases
DE2613084A1 (de) * 1975-03-26 1976-10-21 Fisher & Paykel Beatmungsvorrichtung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE893998C (de) * 1951-07-07 1954-09-16 Otto P Braun Geraet fuer kuenstliche Atmung
US3045668A (en) * 1959-01-20 1962-07-24 Invengineering Inc Intermittent positive pressure respirator
GB1041313A (en) * 1963-08-22 1966-09-01 Karl Ivar Edwardh Improvements in and relating to a metering and mixing apparatus for liquids and/or gases
DE2613084A1 (de) * 1975-03-26 1976-10-21 Fisher & Paykel Beatmungsvorrichtung

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0390288A1 (fr) * 1989-03-30 1990-10-03 Hosta B.V. Dispositif de direction pour remorque
DE19626924A1 (de) * 1996-07-04 1998-01-08 Epazon B V Gerät zur Bereitstellung eines Atemgases
DE19626924C2 (de) * 1996-07-04 1999-08-19 Epazon B V Gerät zur Bereitstellung eines Atemgases
US5848591A (en) * 1996-07-05 1998-12-15 Dragerwerk Ag Respirator with oxygen enrichment
GB2324122A (en) * 1997-04-09 1998-10-14 Draegerwerk Ag Radial flow compressor for respiration and anaesthetic apparatus
DE19714644A1 (de) * 1997-04-09 1998-10-22 Draegerwerk Ag Gasfördereinrichtung für Beatmungs- und Narkosegeräte
GB2324122B (en) * 1997-04-09 1999-08-11 Draegerwerk Ag Radial compressor for respiration and anaesthetic apparatus
DE19714644C2 (de) * 1997-04-09 1999-09-02 Draegerwerk Ag Gasfördereinrichtung für Beatmungs- und Narkosegeräte und dessen Verwendung
US7204249B1 (en) * 1997-10-01 2007-04-17 Invcare Corporation Oxygen conserving device utilizing a radial multi-stage compressor for high-pressure mobile storage
US6805122B2 (en) * 1997-10-01 2004-10-19 Invacare Corporation Oxygen conserving device utilizing a radial multi-stage compressor for high-pressure mobile storage
US7294170B2 (en) 1997-10-01 2007-11-13 Invacare Corporation Apparatus for compressing and storing oxygen enriched gas
EP1317942A1 (fr) * 2001-12-07 2003-06-11 Fisher & Paykel Healthcare Limited Appareil pour mélanger des gaz
US11571536B2 (en) 2011-07-13 2023-02-07 Fisher & Paykel Healthcare Limited Impeller and motor assembly
US9624918B2 (en) 2012-02-03 2017-04-18 Invacare Corporation Pumping device
US11534565B2 (en) 2012-12-18 2022-12-27 Fisher & Paykel Healthcare Limited Impeller and motor assembly
US11992613B2 (en) 2012-12-18 2024-05-28 Fisher & Paykel Healthcare Limited Impeller and motor assembly
CN106860990A (zh) * 2017-03-15 2017-06-20 郑海 一种医用呼吸辅助机
CN106860990B (zh) * 2017-03-15 2017-12-19 吴丽敏 一种医用呼吸辅助机
US11401974B2 (en) 2017-04-23 2022-08-02 Fisher & Paykel Healthcare Limited Breathing assistance apparatus
DE102022002797A1 (de) 2022-08-02 2024-02-08 Rajan Govinda Dosiereinrichtung zur Zugabe wenigstens einer pharmazeutisch wirksamen Substanz zu einem extrakorporal bereitgestellten Atemgas, Gerät zur Bereitstellung eines Atemgases mit einer solchen Dosiereinrichtung und Verfahren

Also Published As

Publication number Publication date
CA1279548C (fr) 1991-01-29
JPS63500988A (ja) 1988-04-14
EP0239615A1 (fr) 1987-10-07

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