EP0239615A1 - Oxygen/air mixture blower for respiratory care - Google Patents
Oxygen/air mixture blower for respiratory careInfo
- Publication number
- EP0239615A1 EP0239615A1 EP86906087A EP86906087A EP0239615A1 EP 0239615 A1 EP0239615 A1 EP 0239615A1 EP 86906087 A EP86906087 A EP 86906087A EP 86906087 A EP86906087 A EP 86906087A EP 0239615 A1 EP0239615 A1 EP 0239615A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- oxygen
- pressure
- patient
- respiratory care
- 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- Withdrawn
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.Respiratory care device using pressurized oxygen to pump an oxygen / air mixture to the patient. The device includes a coupled turbine and blower. The pressurized oxygen drives the turbine which pumps air through the blower. Oxygen can be mixed with air in selected ratios and delivered to the patient. Droplets can be added to oxygen, air or the mixture, upstream or downstream of the device or inside it.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US77883885A | 1985-09-23 | 1985-09-23 | |
US778838 | 1985-09-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0239615A1 true EP0239615A1 (en) | 1987-10-07 |
Family
ID=25114548
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86906087A Withdrawn EP0239615A1 (en) | 1985-09-23 | 1986-09-15 | Oxygen/air mixture blower for respiratory care |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0239615A1 (en) |
JP (1) | JPS63500988A (en) |
CA (1) | CA1279548C (en) |
WO (1) | WO1987001599A1 (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8900781A (en) * | 1989-03-30 | 1990-10-16 | Hosta B V | TRAILER CONTROL. |
DE19626924C2 (en) * | 1996-07-04 | 1999-08-19 | Epazon B V | Breathing gas supply device |
US5848591A (en) * | 1996-07-05 | 1998-12-15 | Dragerwerk Ag | Respirator with oxygen enrichment |
DE19714644C2 (en) * | 1997-04-09 | 1999-09-02 | Draegerwerk Ag | Gas delivery device for ventilators and anesthetic devices and their use |
US5988165A (en) | 1997-10-01 | 1999-11-23 | Invacare Corporation | Apparatus and method for forming oxygen-enriched gas and compression thereof for high-pressure mobile storage utilization |
US7204249B1 (en) * | 1997-10-01 | 2007-04-17 | Invcare Corporation | Oxygen conserving device utilizing a radial multi-stage compressor for high-pressure mobile storage |
US20030108441A1 (en) * | 2001-12-07 | 2003-06-12 | Mackie Scott Robert | Gases mixing apparatus |
DE112012002914T8 (en) | 2011-07-13 | 2014-05-22 | Fisher & Paykel Healthcare Ltd. | Impeller and motor assembly |
WO2013116820A1 (en) | 2012-02-03 | 2013-08-08 | Invacare Corporation | Pumping device |
AU2013101734A4 (en) | 2012-12-18 | 2015-09-24 | Fisher & Paykel Healthcare Limited | Impeller and motor assembly |
CN106860990B (en) * | 2017-03-15 | 2017-12-19 | 吴丽敏 | A kind of medical respiration auxiliary machine |
US11401974B2 (en) | 2017-04-23 | 2022-08-02 | Fisher & Paykel Healthcare Limited | Breathing assistance apparatus |
DE102022002797A1 (en) | 2022-08-02 | 2024-02-08 | Rajan Govinda | Dosing device for adding at least one pharmaceutically active substance to a breathing gas provided extracorporeally, device for providing a breathing gas with such a dosing device and method |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE893998C (en) * | 1951-07-07 | 1954-09-16 | Otto P Braun | Device for artificial breathing |
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 |
NZ177052A (en) * | 1975-03-26 | 1978-12-18 | Fisher & Paykel | Air and gas mixing constant mixture flow with varying gas supply |
-
1986
- 1986-09-15 EP EP86906087A patent/EP0239615A1/en not_active Withdrawn
- 1986-09-15 WO PCT/US1986/001919 patent/WO1987001599A1/en not_active Application Discontinuation
- 1986-09-15 JP JP61505309A patent/JPS63500988A/en active Pending
- 1986-09-18 CA CA000518446A patent/CA1279548C/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO8701599A1 * |
Also Published As
Publication number | Publication date |
---|---|
CA1279548C (en) | 1991-01-29 |
WO1987001599A1 (en) | 1987-03-26 |
JPS63500988A (en) | 1988-04-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0239615A1 (en) | Oxygen/air mixture blower for respiratory care | |
DE19714644C2 (en) | Gas delivery device for ventilators and anesthetic devices and their use | |
CN1867372B (en) | Respiratory apparatus | |
US5813401A (en) | Nebulizer automatic control valve | |
US5611335A (en) | High-frequency fan ventilator | |
WO2002096489A3 (en) | Inhaler | |
US11291785B2 (en) | Portable light-weight ventilator system | |
US4559653A (en) | Rotatable hydrotherapy nozzle | |
EP1491227A3 (en) | Portable drag compressor powered mechnical ventilator | |
NO983631D0 (en) | Method and apparatus for delivery of aerosol driven medication | |
JPH09511677A (en) | Ventilator using piston | |
US4993495A (en) | Apparatus for applying firefighting chemicals | |
JP2012500093A (en) | Nitric oxide generation system | |
JPH08173538A (en) | Double action and single-acting piston type ventilating device | |
EP0958038A4 (en) | ||
US4989595A (en) | Aspirator/nebulizer | |
US20140352985A1 (en) | Self-Regulating Foam Dispensing System | |
MXPA04005853A (en) | Patient humidification systems. | |
CN210068481U (en) | Self-driven axial flow mixed flow pump | |
JP2017505176A (en) | Ventilator and ventilator system | |
EP1317942A1 (en) | Gases mixing apparatus | |
CN106860990B (en) | A kind of medical respiration auxiliary machine | |
US20230121027A1 (en) | Fluid blending devices | |
CN208552751U (en) | A kind of medical respiration section medical liquid atomizing adding set | |
KR102331005B1 (en) | Small artificial respiration apparatus |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19870523 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
17Q | First examination report despatched |
Effective date: 19890727 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19920331 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: DE VUONO, ANTHONY, C. Inventor name: RAZGAITIS, RICHARD |