CA2036897A1 - Apparatus for oxygenating a patient - Google Patents
Apparatus for oxygenating a patientInfo
- Publication number
- CA2036897A1 CA2036897A1 CA002036897A CA2036897A CA2036897A1 CA 2036897 A1 CA2036897 A1 CA 2036897A1 CA 002036897 A CA002036897 A CA 002036897A CA 2036897 A CA2036897 A CA 2036897A CA 2036897 A1 CA2036897 A1 CA 2036897A1
- Authority
- CA
- Canada
- Prior art keywords
- oxygen
- way valve
- terized
- charac
- patient
- 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.)
- Abandoned
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
- A61M16/06—Respiratory or anaesthetic masks
-
- 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
- A61M2230/00—Measuring parameters of the user
- A61M2230/40—Respiratory characteristics
- A61M2230/43—Composition of exhalation
- A61M2230/432—Composition of exhalation partial CO2 pressure (P-CO2)
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Pulmonology (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- External Artificial Organs (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Devices For Medical Bathing And Washing (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
ABSTRACT
A method characterized in that the oxygen applicator is so constructed that it supplies pure oxygen in a directed flow and solely via the nose and in that the apparatus additionally comprises a oneway valve which can be inserted in substantially sealing-tight manner into the mouth of the patient, the one-way valve opening only upon gas outflow, otherwise closing and allowing excess oxygen and expired air to escape solely through the mouth.
A method characterized in that the oxygen applicator is so constructed that it supplies pure oxygen in a directed flow and solely via the nose and in that the apparatus additionally comprises a oneway valve which can be inserted in substantially sealing-tight manner into the mouth of the patient, the one-way valve opening only upon gas outflow, otherwise closing and allowing excess oxygen and expired air to escape solely through the mouth.
Description
1- 2~3~7 An Apparatus for Oxygenating a Patent ~arm blood cells rely on a continuous and adequate demand-orientated supply of oxygen so that even brief interruption in the supply of oxygen can cause irreparable demage in and on the cells, particularly of the central nervous system and the cardiac circulatory system.
A shortage of oxygen, hypoxia, can be caused principally by inadequate supply, disorders of the pulmonary function, dis-orders in the conveyance of oxygen through the blood or a lack of haemoglobin and also by disorders in the cardiac circulatory sy~tem. In emergency medicine as well as in internal clinical - supply, therefore, it is standard practice to supply oxygen to a patient. Within the framework of what is referred to as pre-oxygenation, above all be~ore any intubation, it is vitally necessary to cover the patient's oxygen demand in the dangerous period prior to completion of the intubation or in the event of intubation complications.
In such and other cases, it is vital to enrich the storage space in the lungs with pure oxygen and at the same time also to ensure that other gases present in the body or in the inspired air, above all nitrogen, are as far as possible kept completely away. In most cases, this is either not achieved at all or is achieved only very inadequately by conventional pre-oxygenation methods. Known oxygenation apparatuses are masks, pharyngeal tubes and nasal-pharyngeal tubes, referred to as just tubes.
The disad~antages of these apparatus, described in the literatu-re ~e. g. R. G. Sandersen [ed.]: The Cardiac Patient, Philadel-phia, W. B. Saunders, 1972, pages 310), are above all 2 - 2~ 3~g7 - insufficient humidification and warming of the gaQ, - oxygen concentration is never 100 %, - re-inhalation of respired air (CO2- and N2-enrichment), - leaks in the system (absorption of Nz) and - a very high oxygen flow.
The problem on which the invention is based therefore resideq in providing an apparatus for supplying oxygen to a patient (oxygenation), by means of which, simultaneously witp the enrichment of oxygen, undesired other gases couldas far as possible be kept completely out of the pulmonary space.
In addition, it is intended to eliminate the above-mentioned drawbacks o~ prior art apparatus.
According to the invention, this apparatus of oxygenatlng a patient is provided with an oxygen applicator for supplying oxygen via the nose and is characterized in that the oxygen applicator is so constructed that it supplies pure oxygen in a directed flow (nasoral) solely via the nose (nasal) and in that the apparatus additionally comprises a one-way valve adapted to be inserted at least substantially in sealing-tight fashion into the mouth ~oral) of the patient and which opens only during gas outflow, otherwise closing and allowing excess oxygen and respired air to escape solely through the mouth.
In principle, it is possible with this apparatus to ensure on the one hand - a directed ~low, namely a separation of inhalation (100 % 2 via the nose) and exhalation (excess 2~ N2 and C02 via the oral valve), i. e. a "nasoral" system is achieve, and - a physiological flow, namely humidification and heating, is ~ 3 ~ 7 retained via the nose without $ncrea~ing the dead space and avoiding any re-inhalation~
This apparatus ensures that if breathing is present or in the process of ceasing (apnoea) only pure (warmed and humidified) oxygen can reach the patient's respiratory passages and lungs, all gases which should be eliminated (nitrogen, laughing gasr carbon dioxide) are completely (N2, N20) or physiologically (CO2) dicharged through the oral valve.
Even if the patient is unable to breathe independently, this apparatus is capable of allowing the patent tG "inhale" only pure oxygen (referred to as apnoic oxygenation), since the one-way valve prevents the uncontrolled and undesired penetration of ambient air and thus large quantities of nitrogen. This functi~
ons for an unlimited period. As soon as respiration cease~, intentionally (for untubation) or unintentionally ~an emergen-CY) t the oral valve can be removed if it is ensured that excess oxygen escapes through the mouth. In this situation, thereapeu-tic measures can be undertaken via the mouth (e. g. vacuum extraction, intubation, haemostasis), but also diagnostlc measures are possible (e. g. bronchoscopy, laryngoscopy).
Doctor, nurse or auxiliary also have both hands free for any necessary routine or acutely desired measure such as for example in an emergency the setting up of instruments for artificial respiration and the corresponding drugs or also the provision of a peripherovenous access for the administration of life saving or also anaesthesiologically vital medicaments or blood or blood substitutes. Also, doctor, lay helper or auxiliary will have both hands free for resuscitation measures such as for example extrathoracic cadiac massage, defibrillation, injections or infusions. A further advantage of the apparatus resides in the fact that it even allows a lay person significantly and w$thout risk to increase the existing supply of oxygen which is minimal - 4 ~ 7 under normal conditions, which i of great benefit over the entire range of extraclinical and intraclinical patent care for daily routine work. Assitance on the part of the patient is unnecessary. Thus, the apparatus can be advantageously used in cases of hypoxia of varying origin or for pre-oxygenation prior to intubation. With these cases, the apparatus according to the invention will a priori reduce the overall risk which exists especially by reason of possible obstacles to intubation.
The same apparatus can be used universally, namely both in emergency medicine (patient conscious or unconscious, breathing present or faltering) and also in anaesthesiology (pre-operati-ve: pre~oxygenation, post-operative: recovery room), in intensi-ve care (weaning of respirator), in otorhinolaryngology (laryn-goscopy), in pulmology (bronchoscopy) and in dental, oral and maxillary treatment (oral surgery).
An essential feature of the apparatus according to the inventlon is that the introduction of the oxygen takes place ~olely ~ia the noseO Oxygen overflow and exhalation pass through the mouth which is prevented from drawing in air by the one-way valve.
The oxygen applicator can be constructed in various ways and its supply part can for example take the form of a nasal catheter.
Expediently, however, an oxygen applicator in the form o~ a mask will be used, the mask covering only the nose. Preferably, this mask is so constructed that it can be placed over the no~e in a sub~tantially sealing-tight manner.
In per se known manner, the oxygen applicator can be connected to an oxygen bag interposed between the oxygen source and the oxygen applicator, allowing the inhalation proce~s to be observed. In addition to or instead of the oxygen bag, an acoustic or visual signal may be provided on the oxygen ap-~~` 5 2~3~7 plicator and/or on the one-way valve, to be triggered when the desired inhalation or exhalation takeq place or when gas is flowing in or out.
In order to guarantee a unique ~innerhospital and prehospital) application of the oxygen bag the setting as described below should be followed: The oxygen bag connected to the oxygen tube 2 of the oxygen applicator 1 comprises a 22 mm 0 connection ~DIN-ISO 5356 part I) allowing for direct connection to both the oxygen applicator 1 as well as to any endotracheal intubation tubes, the comprised 6 and 15 mm 0 connecting combination additionally allows for both dlrect connection to the central oxygen supply via the installed ventilationi system (15 mm 0, DIN-ISO 7228) and, via the integrated 6 mm connector ~IS0 594~1) to mobile oxygen supply sources (e. g. oxygen cylinders~.
After performance of endotracheal intubation (one-way valvs 3 removed), clamped-sealing and deconnection of the oxygen bag from the oxygen tube 2, the described setting provides the posqibility to maintain oxygenation/denitrogenation (mobile oxygenation, e. g. ~or transport of patient~ from the induction room to the operation theatre and from operation theatre to the recovery room or intensive care unit, for any measure of patent positioning).
As stated abo~e, the one-way valve is so constructed that it can be inserted in substantially sealing-tight manner into the patient's mouth. For this purpose, the one~way valve is expe-diently provided with a flexible sealing plate which is in-troduced into the patient's mouth in ~ront of the top and bottom jaws and between them and the lips. It is especially expedient if there is adjacent to this sealing plate a tubular member which projects into the pharyngeal space and on which the patient is able to bite in order to maintain the sealing plate '~
., ` - 6 - 2~ 7 in a sealing-tight position.
However, it is of course also possible for the one-way valve to be sealed in other ways such as ~or example by a possiblv inflatable rubber balloon which fits tightly in the mouth opening during inflation.
The two devices which form part of the apparatus according to the invention, the oxygen applicator and the one-way valve, can he provided separately from each other, as a set. However, it is expedient for them to be connected to each other so that the user, the doctor, the nurse or the auxiliary, always has both devices available together, ready for use.
The accompanying drawing shows an embodiment of the apparatus according to the invention diagrammatically and in vertical section.
The apparatus acccording to the invention consists of the oxygen applicator 1 and the one-way valve 3. The oxygen applicator device 1 takes the form of a mask with two sealing lip9 7 and 8 which are applied above and below the nose and allow oxygen to be supplied solely via the nose. The oxygen applicator 1 is connected to an oxygen tube 2 which is connected to an oxygen cylinder, possibly via an oxygen bag.
The one-way valve 3 has a ~lexible sealing plate 5 which can be inserted in a qubstantially sealing-tight manner between the lips and jaws (teeth) of the patient. Adjacent to this sealing plate 5 is a tubular member 6 on which the patient bite In the widened out front part of the one-way valve which is outside the mouth, there are the valve members 4 which are so constructed that they spread apart from one another during exhalation or during gas outflow, whereas they are otherwise pressed in ~ _ 7 _ 2~3~7 ~ealing-tight manner on one another ~for example during the inhalation process) and prevent the ingress of ambient airO
Under clinical conditions, the denitrogenation as well as the ventilation of the patient can be controlled by endexpiratory gas sampling using either mass spectrometry (2~ CO2, M2) or capnometry (2~ C2) For this occasion the one-way valve 3 comprises a special and closable gas outlet 9 allowing for the connection of the respective analysing system (ISO 594/1) and thus for continuous gas sampling ~side stream).
A shortage of oxygen, hypoxia, can be caused principally by inadequate supply, disorders of the pulmonary function, dis-orders in the conveyance of oxygen through the blood or a lack of haemoglobin and also by disorders in the cardiac circulatory sy~tem. In emergency medicine as well as in internal clinical - supply, therefore, it is standard practice to supply oxygen to a patient. Within the framework of what is referred to as pre-oxygenation, above all be~ore any intubation, it is vitally necessary to cover the patient's oxygen demand in the dangerous period prior to completion of the intubation or in the event of intubation complications.
In such and other cases, it is vital to enrich the storage space in the lungs with pure oxygen and at the same time also to ensure that other gases present in the body or in the inspired air, above all nitrogen, are as far as possible kept completely away. In most cases, this is either not achieved at all or is achieved only very inadequately by conventional pre-oxygenation methods. Known oxygenation apparatuses are masks, pharyngeal tubes and nasal-pharyngeal tubes, referred to as just tubes.
The disad~antages of these apparatus, described in the literatu-re ~e. g. R. G. Sandersen [ed.]: The Cardiac Patient, Philadel-phia, W. B. Saunders, 1972, pages 310), are above all 2 - 2~ 3~g7 - insufficient humidification and warming of the gaQ, - oxygen concentration is never 100 %, - re-inhalation of respired air (CO2- and N2-enrichment), - leaks in the system (absorption of Nz) and - a very high oxygen flow.
The problem on which the invention is based therefore resideq in providing an apparatus for supplying oxygen to a patient (oxygenation), by means of which, simultaneously witp the enrichment of oxygen, undesired other gases couldas far as possible be kept completely out of the pulmonary space.
In addition, it is intended to eliminate the above-mentioned drawbacks o~ prior art apparatus.
According to the invention, this apparatus of oxygenatlng a patient is provided with an oxygen applicator for supplying oxygen via the nose and is characterized in that the oxygen applicator is so constructed that it supplies pure oxygen in a directed flow (nasoral) solely via the nose (nasal) and in that the apparatus additionally comprises a one-way valve adapted to be inserted at least substantially in sealing-tight fashion into the mouth ~oral) of the patient and which opens only during gas outflow, otherwise closing and allowing excess oxygen and respired air to escape solely through the mouth.
In principle, it is possible with this apparatus to ensure on the one hand - a directed ~low, namely a separation of inhalation (100 % 2 via the nose) and exhalation (excess 2~ N2 and C02 via the oral valve), i. e. a "nasoral" system is achieve, and - a physiological flow, namely humidification and heating, is ~ 3 ~ 7 retained via the nose without $ncrea~ing the dead space and avoiding any re-inhalation~
This apparatus ensures that if breathing is present or in the process of ceasing (apnoea) only pure (warmed and humidified) oxygen can reach the patient's respiratory passages and lungs, all gases which should be eliminated (nitrogen, laughing gasr carbon dioxide) are completely (N2, N20) or physiologically (CO2) dicharged through the oral valve.
Even if the patient is unable to breathe independently, this apparatus is capable of allowing the patent tG "inhale" only pure oxygen (referred to as apnoic oxygenation), since the one-way valve prevents the uncontrolled and undesired penetration of ambient air and thus large quantities of nitrogen. This functi~
ons for an unlimited period. As soon as respiration cease~, intentionally (for untubation) or unintentionally ~an emergen-CY) t the oral valve can be removed if it is ensured that excess oxygen escapes through the mouth. In this situation, thereapeu-tic measures can be undertaken via the mouth (e. g. vacuum extraction, intubation, haemostasis), but also diagnostlc measures are possible (e. g. bronchoscopy, laryngoscopy).
Doctor, nurse or auxiliary also have both hands free for any necessary routine or acutely desired measure such as for example in an emergency the setting up of instruments for artificial respiration and the corresponding drugs or also the provision of a peripherovenous access for the administration of life saving or also anaesthesiologically vital medicaments or blood or blood substitutes. Also, doctor, lay helper or auxiliary will have both hands free for resuscitation measures such as for example extrathoracic cadiac massage, defibrillation, injections or infusions. A further advantage of the apparatus resides in the fact that it even allows a lay person significantly and w$thout risk to increase the existing supply of oxygen which is minimal - 4 ~ 7 under normal conditions, which i of great benefit over the entire range of extraclinical and intraclinical patent care for daily routine work. Assitance on the part of the patient is unnecessary. Thus, the apparatus can be advantageously used in cases of hypoxia of varying origin or for pre-oxygenation prior to intubation. With these cases, the apparatus according to the invention will a priori reduce the overall risk which exists especially by reason of possible obstacles to intubation.
The same apparatus can be used universally, namely both in emergency medicine (patient conscious or unconscious, breathing present or faltering) and also in anaesthesiology (pre-operati-ve: pre~oxygenation, post-operative: recovery room), in intensi-ve care (weaning of respirator), in otorhinolaryngology (laryn-goscopy), in pulmology (bronchoscopy) and in dental, oral and maxillary treatment (oral surgery).
An essential feature of the apparatus according to the inventlon is that the introduction of the oxygen takes place ~olely ~ia the noseO Oxygen overflow and exhalation pass through the mouth which is prevented from drawing in air by the one-way valve.
The oxygen applicator can be constructed in various ways and its supply part can for example take the form of a nasal catheter.
Expediently, however, an oxygen applicator in the form o~ a mask will be used, the mask covering only the nose. Preferably, this mask is so constructed that it can be placed over the no~e in a sub~tantially sealing-tight manner.
In per se known manner, the oxygen applicator can be connected to an oxygen bag interposed between the oxygen source and the oxygen applicator, allowing the inhalation proce~s to be observed. In addition to or instead of the oxygen bag, an acoustic or visual signal may be provided on the oxygen ap-~~` 5 2~3~7 plicator and/or on the one-way valve, to be triggered when the desired inhalation or exhalation takeq place or when gas is flowing in or out.
In order to guarantee a unique ~innerhospital and prehospital) application of the oxygen bag the setting as described below should be followed: The oxygen bag connected to the oxygen tube 2 of the oxygen applicator 1 comprises a 22 mm 0 connection ~DIN-ISO 5356 part I) allowing for direct connection to both the oxygen applicator 1 as well as to any endotracheal intubation tubes, the comprised 6 and 15 mm 0 connecting combination additionally allows for both dlrect connection to the central oxygen supply via the installed ventilationi system (15 mm 0, DIN-ISO 7228) and, via the integrated 6 mm connector ~IS0 594~1) to mobile oxygen supply sources (e. g. oxygen cylinders~.
After performance of endotracheal intubation (one-way valvs 3 removed), clamped-sealing and deconnection of the oxygen bag from the oxygen tube 2, the described setting provides the posqibility to maintain oxygenation/denitrogenation (mobile oxygenation, e. g. ~or transport of patient~ from the induction room to the operation theatre and from operation theatre to the recovery room or intensive care unit, for any measure of patent positioning).
As stated abo~e, the one-way valve is so constructed that it can be inserted in substantially sealing-tight manner into the patient's mouth. For this purpose, the one~way valve is expe-diently provided with a flexible sealing plate which is in-troduced into the patient's mouth in ~ront of the top and bottom jaws and between them and the lips. It is especially expedient if there is adjacent to this sealing plate a tubular member which projects into the pharyngeal space and on which the patient is able to bite in order to maintain the sealing plate '~
., ` - 6 - 2~ 7 in a sealing-tight position.
However, it is of course also possible for the one-way valve to be sealed in other ways such as ~or example by a possiblv inflatable rubber balloon which fits tightly in the mouth opening during inflation.
The two devices which form part of the apparatus according to the invention, the oxygen applicator and the one-way valve, can he provided separately from each other, as a set. However, it is expedient for them to be connected to each other so that the user, the doctor, the nurse or the auxiliary, always has both devices available together, ready for use.
The accompanying drawing shows an embodiment of the apparatus according to the invention diagrammatically and in vertical section.
The apparatus acccording to the invention consists of the oxygen applicator 1 and the one-way valve 3. The oxygen applicator device 1 takes the form of a mask with two sealing lip9 7 and 8 which are applied above and below the nose and allow oxygen to be supplied solely via the nose. The oxygen applicator 1 is connected to an oxygen tube 2 which is connected to an oxygen cylinder, possibly via an oxygen bag.
The one-way valve 3 has a ~lexible sealing plate 5 which can be inserted in a qubstantially sealing-tight manner between the lips and jaws (teeth) of the patient. Adjacent to this sealing plate 5 is a tubular member 6 on which the patient bite In the widened out front part of the one-way valve which is outside the mouth, there are the valve members 4 which are so constructed that they spread apart from one another during exhalation or during gas outflow, whereas they are otherwise pressed in ~ _ 7 _ 2~3~7 ~ealing-tight manner on one another ~for example during the inhalation process) and prevent the ingress of ambient airO
Under clinical conditions, the denitrogenation as well as the ventilation of the patient can be controlled by endexpiratory gas sampling using either mass spectrometry (2~ CO2, M2) or capnometry (2~ C2) For this occasion the one-way valve 3 comprises a special and closable gas outlet 9 allowing for the connection of the respective analysing system (ISO 594/1) and thus for continuous gas sampling ~side stream).
Claims (11)
1. An apparatus for oxygenating a patient, comprising an oxygen applicator for supplying oxygen via the nose, characterized in that the oxygen applicator (1) is so constructed that it supplies pure oxygen in a directed flow and solely via the nose and in that the apparatus additionally comprises a one-way valve (3) which can be inserted in substantially sealing-tight manner into the mouth of the patient, the one-way valve (3) opening only upon gas outflow, otherwise closing and allowing excess oxygen and expired air to escape solely through the mouth.
2. An apparatus according to Claim 1, characterized that the oxygen applicator (1) is constructed as a mask which is only connected to the nose.
3. An apparatus according to Claim 1 or 2, characterized in that the one-way valve (3) comprises a flexible sealing plate (5) adapted to be introduced between the lips and the jaws or teeth of the patient.
4. An apparatus according to Claim 3, characterized in that the one-way valve (3) comprises a tube portion (6) adjacent the sealing plate (5).
5. An apparatus according to one of the Claims 1 to 4, charac-terized in that the one-way valve (3) comprises flexible plates which are spread apart from one another only upon gas outflow, being otherwise (e. g. during inhalation) pressed against one another in substantially sealing-tight manner.
6. An apparatus according to one of Claims 1 to 5, charac-terized in that the oxygen applicator (1) and the one-way valve (3) are connected to each other.
7. An apparatus according to one of Claims 1 to 6, charac-terized in that the one-way valve (3) generates a visual or acoustic signal for the period during which it is open.
8. An apparatus according to one of Claims 1 to 6, charac-terized in that the one-way valve (3) generates a visual or acoustic signal upon being opened and closed.
9. An apparatus according to one of Claims 1 to 6, charac-terized in that the one-way valve (3) contains a closable gas outlet (9) (connection 6 mm 0, according to ISO 594/1) allowing continuous endexpiratory gas sampling for gas analysis.
10. An apparatus according to one of Claims 1 to 2, charac-terized in that the oxygen tube (2) of the oxygen applicator (1) comprises a connection with 2 mm 0 (DIN-ISO 5356 Part I).
11. An apparatus according to one of Claims 1 to 2, charac-terized in that the oxygen tube (2) of the oxygen ap-plicator (1) comprises a combined connection of 6 (according to ISO 594/1) and 15 mm 0 (according to DIN-ISO 7228): The 6 mm connector being part of a 15 mm connector.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4009008.6 | 1990-03-21 | ||
| DE4009008A DE4009008A1 (en) | 1990-03-21 | 1990-03-21 | DEVICE FOR OXYGENATING A PATIENT |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2036897A1 true CA2036897A1 (en) | 1991-09-22 |
Family
ID=6402688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002036897A Abandoned CA2036897A1 (en) | 1990-03-21 | 1991-02-22 | Apparatus for oxygenating a patient |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0447844B1 (en) |
| JP (1) | JPH04250170A (en) |
| AT (1) | ATE114248T1 (en) |
| AU (1) | AU632913B2 (en) |
| CA (1) | CA2036897A1 (en) |
| DE (2) | DE4009008A1 (en) |
| DK (1) | DK0447844T3 (en) |
| ES (1) | ES2063989T3 (en) |
| GR (1) | GR3015126T3 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4445652A1 (en) * | 1994-12-21 | 1996-06-27 | Igor Borrmann | Breathing device for intra=oral use |
| CA2686149C (en) * | 2008-11-17 | 2016-11-01 | The Metrohealth System | Combination lung ventilation and mucus clearance apparatus and method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE356630C (en) * | 1920-09-23 | 1922-07-25 | Paul Lindner Dr | Inhaler |
| US3037501A (en) * | 1959-02-02 | 1962-06-05 | Scott Aviation Corp | Quick-donning breathing mask |
| DE3719009A1 (en) * | 1987-06-06 | 1988-12-22 | Ernst Dipl Ing Hoermann | Ventilation mask with adjustable mouthpiece and nose moulding |
| US4919128A (en) * | 1988-08-26 | 1990-04-24 | University Technologies International Inc. | Nasal adaptor device and seal |
-
1990
- 1990-03-21 DE DE4009008A patent/DE4009008A1/en not_active Withdrawn
-
1991
- 1991-02-22 CA CA002036897A patent/CA2036897A1/en not_active Abandoned
- 1991-02-27 AT AT91102883T patent/ATE114248T1/en not_active IP Right Cessation
- 1991-02-27 DE DE59103558T patent/DE59103558D1/en not_active Expired - Fee Related
- 1991-02-27 DK DK91102883.5T patent/DK0447844T3/en active
- 1991-02-27 ES ES91102883T patent/ES2063989T3/en not_active Expired - Lifetime
- 1991-02-27 EP EP91102883A patent/EP0447844B1/en not_active Expired - Lifetime
- 1991-03-13 JP JP3048176A patent/JPH04250170A/en active Pending
- 1991-03-15 AU AU73532/91A patent/AU632913B2/en not_active Ceased
-
1995
- 1995-02-22 GR GR940403607T patent/GR3015126T3/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DK0447844T3 (en) | 1995-03-13 |
| EP0447844A3 (en) | 1992-03-11 |
| EP0447844A2 (en) | 1991-09-25 |
| GR3015126T3 (en) | 1995-05-31 |
| DE4009008A1 (en) | 1991-09-26 |
| AU632913B2 (en) | 1993-01-14 |
| JPH04250170A (en) | 1992-09-07 |
| EP0447844B1 (en) | 1994-11-23 |
| AU7353291A (en) | 1991-10-24 |
| DE59103558D1 (en) | 1995-01-05 |
| ES2063989T3 (en) | 1995-01-16 |
| ATE114248T1 (en) | 1994-12-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |