CA1160537A - Anaesthetic gas scavenging device - Google Patents
Anaesthetic gas scavenging deviceInfo
- Publication number
- CA1160537A CA1160537A CA000372152A CA372152A CA1160537A CA 1160537 A CA1160537 A CA 1160537A CA 000372152 A CA000372152 A CA 000372152A CA 372152 A CA372152 A CA 372152A CA 1160537 A CA1160537 A CA 1160537A
- Authority
- CA
- Canada
- Prior art keywords
- bag
- dish
- outlet
- anaesthetic gas
- anaesthetic
- 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.)
- Expired
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
- A61M16/0087—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. mouth-to-mouth respiration; Tracheal tubes
- A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
- A61M16/0816—Joints or connectors
- A61M16/0833—T- or Y-type connectors, e.g. Y-piece
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)
- Respiratory Apparatuses And Protective Means (AREA)
- Devices For Medical Bathing And Washing (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
Compressible bag which is manipulated by an anaesthetist to control the breathing of a pediatric patient to whom mask is applied, is disposed within a collector dish so that exhaled breath and excess anaesthetic gases can be aspirated away by way of a coupling tube connected to an exhaust duct, thereby to avoid pollution of the atmosphere with anaesthetic gases. The dish has a half lid permitting access to the bag.
Compressible bag which is manipulated by an anaesthetist to control the breathing of a pediatric patient to whom mask is applied, is disposed within a collector dish so that exhaled breath and excess anaesthetic gases can be aspirated away by way of a coupling tube connected to an exhaust duct, thereby to avoid pollution of the atmosphere with anaesthetic gases. The dish has a half lid permitting access to the bag.
Description
l 160537 1 This invention concerns an anaesthetic gas scavenging device which is particularly, but not exclusively, suitable for use by paediatricians.
In hospitals, during surgical operations, anaesthetised patients exhale anaesthetic gases, such as nitrous oxide, with the result that there can be a build-up of anaesthetic gases in the operating theatre.
It is well known that even very small concentrations of such gases, e.g. of the order of 4 parts per million, can be detrimental to people working in the area;
accordingly, we have already proposed to provide, for such a patient, an anti-pollution device comprising a mask for application to a user's face for exhaled breath to be received~therein, the mask being connected, by way of a valve, with a flexible coupling adapted for plug-and-socket connection to a permanent exhaust duct installed in the theatre (and which may also extend to any desired locations in the hospital), as part of the anti-pollution system.
1 ~6~5~ ~
1 Because small babies canno-t exert any significant pressure wi~h the lungs, this prior arrange-ment, involving a valve which has to be opened by the pressure of ~xhaled air, is not suitable for such patients. An object of the present invention is to provide an arrangement which is particularly suitable for use in connection with babies.
With this object in view, the present invention provides an anaesthetic gas scavenging device, suitable for use by paediatricians, comprising an intertrachael tube, or a ~ace mask for application to a patient's face, connected, by a flexible tube which is adapted to be connected also to an anaesthetic gas supply, to a compressible bag to which anaesthetic gases and exhaled air passes and which is manipulatable to regulate the patient's breath, said bag having an outlet into a collector dish for accommodating said bag, a respective outlet from said dish being adapted for connection, by a flexible coupling, to an exhaust duct.
The dish is preferably provided with a half lid facilitating access to the bag for manipulation thereof and permitting entry of environmental air to dilute the anaesthetic gases and breath received from the outlet from the bag.
i 16l)537 The inYention will be de~cribed further 9 by wayo~ exa~ple, with reference to the accompanying drawing which illu~trate~ a pre~erred embodiment of the de~ice o~ the in~entlonO In the drawings-Flg. 1 i~ a diagrammatic perspective ~iew illustrating the said pre~erred embodiment fitbed with a face ma~k; and ~ig. 2 i8 a fragmentary view ~llu~trating the embodiment of Fig. 1 modi~ied by the flttlng o~ an intertraoheal tube in the place o~ the ~a~k.
The illustrated embodiment o~ the anaestheticga~ sca~englng de~ice o~ the in~entisn comprises a ~lexible anaesthetic tube 10 connected at one end to a Tee-piece 30 one arm of which is connected to a ~aoe mask 31 adapted for applioation to a baby patient~
Pace ~or hiln to breathe and exhale therethrough, the other arm of the Tee-piece 30 being coupled to ~h6 anae~thetic gaR ~upply equipment lndioated diagrammat-ically at 32. At it~ other end the tube 10 i5 connected to an anae~theti~t~ bag 11 accommodated within a collector di-qh 12 and ha~ing a bag outlet 13.
The ~ag 11 rest~ upon a per~orate plate 14 within the dish 12, the bottom of which i~ formed with a suction outlet 15. At it~ top, the di~h 12 has fitted thereto
In hospitals, during surgical operations, anaesthetised patients exhale anaesthetic gases, such as nitrous oxide, with the result that there can be a build-up of anaesthetic gases in the operating theatre.
It is well known that even very small concentrations of such gases, e.g. of the order of 4 parts per million, can be detrimental to people working in the area;
accordingly, we have already proposed to provide, for such a patient, an anti-pollution device comprising a mask for application to a user's face for exhaled breath to be received~therein, the mask being connected, by way of a valve, with a flexible coupling adapted for plug-and-socket connection to a permanent exhaust duct installed in the theatre (and which may also extend to any desired locations in the hospital), as part of the anti-pollution system.
1 ~6~5~ ~
1 Because small babies canno-t exert any significant pressure wi~h the lungs, this prior arrange-ment, involving a valve which has to be opened by the pressure of ~xhaled air, is not suitable for such patients. An object of the present invention is to provide an arrangement which is particularly suitable for use in connection with babies.
With this object in view, the present invention provides an anaesthetic gas scavenging device, suitable for use by paediatricians, comprising an intertrachael tube, or a ~ace mask for application to a patient's face, connected, by a flexible tube which is adapted to be connected also to an anaesthetic gas supply, to a compressible bag to which anaesthetic gases and exhaled air passes and which is manipulatable to regulate the patient's breath, said bag having an outlet into a collector dish for accommodating said bag, a respective outlet from said dish being adapted for connection, by a flexible coupling, to an exhaust duct.
The dish is preferably provided with a half lid facilitating access to the bag for manipulation thereof and permitting entry of environmental air to dilute the anaesthetic gases and breath received from the outlet from the bag.
i 16l)537 The inYention will be de~cribed further 9 by wayo~ exa~ple, with reference to the accompanying drawing which illu~trate~ a pre~erred embodiment of the de~ice o~ the in~entlonO In the drawings-Flg. 1 i~ a diagrammatic perspective ~iew illustrating the said pre~erred embodiment fitbed with a face ma~k; and ~ig. 2 i8 a fragmentary view ~llu~trating the embodiment of Fig. 1 modi~ied by the flttlng o~ an intertraoheal tube in the place o~ the ~a~k.
The illustrated embodiment o~ the anaestheticga~ sca~englng de~ice o~ the in~entisn comprises a ~lexible anaesthetic tube 10 connected at one end to a Tee-piece 30 one arm of which is connected to a ~aoe mask 31 adapted for applioation to a baby patient~
Pace ~or hiln to breathe and exhale therethrough, the other arm of the Tee-piece 30 being coupled to ~h6 anae~thetic gaR ~upply equipment lndioated diagrammat-ically at 32. At it~ other end the tube 10 i5 connected to an anae~theti~t~ bag 11 accommodated within a collector di-qh 12 and ha~ing a bag outlet 13.
The ~ag 11 rest~ upon a per~orate plate 14 within the dish 12, the bottom of which i~ formed with a suction outlet 15. At it~ top, the di~h 12 has fitted thereto
2~ a hal~ lld 16 whlch c~n be rotated about the top of I ~6~5 DPoSol81 4 the dish 12 to enable it to be brought to a convenlent position oP use, as w~ll be understood from the description oP use oP tha device given later.
Pro~ided for ~upporting the dish 12 ~ an arm 17 secured, by its non-illu~trated end, ~or e~ample9 to an anae~thetic trolley (not ~hown) and ha~ing at it~ illustrated Pree end a supporting ring 18 onto which the di~h 12 locates by the suction outlet 1 pro~ecting d~wnwards therethrough.
The outlet 15 provides for the connection to the di~h 12 of a flexible coupling tube 19, by a ~ocket . 20 on said tube 19 fittinB to the outlet ~, a releasable catch 21 on the socket 19 cooperating with a Pee 22 on the suction outlet 15 to retai~ the ~ocket 20 in place. Th~ flexible coupling tube 19 haq, on it~ other end, a further socket 23 adapted to fit, as a bayonet ~oint, onto a ~uction sp~got 24 provided on a terminal bos 25 connected to an exhau~t duct 26 forming part o~ an anti-pollution gas-exhau~t system through which ga~ can be aspiratsd,in large volume~ at relatively low pressure, by means oP an impellar or the lika (not shown).
The manner of operation of the device will readily be understood from the ~orsgoing descript~on.
The mask 31 being applied to the patient~ 8 face and 1 16(~537 1 anaesthetic gas being supplied thereto, and the flexible coupling tube 19 being coupled by its ends to the suction outlet 15 of the dish 12 and the suction spigot 24 respectively, an anaesthetist manipulates the bag 11 (to which he has access past the half lid 16) so as to regulate the patient's breathing. Aspirated breath, and excess anaesthetic gases, emerge into the dish 12 by way of the bag outlet 13 which the anaesthetist directs downwards into said dish 12. Air is exhausted, for instance at the rate of about 750 litres per minute, by way of the coupling tube 19 and the exhaust duct 26.
Accordingly, there is a continuous air current into the dish 12 past the half lid 16, and this mixes with the gas from the bag 11, as it passes to the coupling tube 19.
This air dilutes both the anaesthetic gases and the moisture emerging from the bag 11 and therefore is effect-ive to eliminate pollution and also minimise the risk of causing deterioration of the gàs-exhaust system, by eliminating the passage of highly saturated vapours therethrough. -The invention"is not confined to the precise details of the foregoing example, and variations may be made thereto. Thus, for instance, the dish 12 can be of different configuration from what is shown, and the half lid 16 may be omitted, provided l 160S~7 the arrangement i~ such to en~ure that there i9 a~
a~6s air inflow to mix with and dilute ~4ff~coming ~rom he outlet 13 from the bag 11 and that access ¢an be had to the latter for manipulation. A~ ~hown in Fig..2 of the drawing, the apparatu~ may be employed with an endotracheal tube 40, having an inflatable cuff 41, inflatable by way of an inflation tube 42, in the plaoe of the face mask 31.
Pro~ided for ~upporting the dish 12 ~ an arm 17 secured, by its non-illu~trated end, ~or e~ample9 to an anae~thetic trolley (not ~hown) and ha~ing at it~ illustrated Pree end a supporting ring 18 onto which the di~h 12 locates by the suction outlet 1 pro~ecting d~wnwards therethrough.
The outlet 15 provides for the connection to the di~h 12 of a flexible coupling tube 19, by a ~ocket . 20 on said tube 19 fittinB to the outlet ~, a releasable catch 21 on the socket 19 cooperating with a Pee 22 on the suction outlet 15 to retai~ the ~ocket 20 in place. Th~ flexible coupling tube 19 haq, on it~ other end, a further socket 23 adapted to fit, as a bayonet ~oint, onto a ~uction sp~got 24 provided on a terminal bos 25 connected to an exhau~t duct 26 forming part o~ an anti-pollution gas-exhau~t system through which ga~ can be aspiratsd,in large volume~ at relatively low pressure, by means oP an impellar or the lika (not shown).
The manner of operation of the device will readily be understood from the ~orsgoing descript~on.
The mask 31 being applied to the patient~ 8 face and 1 16(~537 1 anaesthetic gas being supplied thereto, and the flexible coupling tube 19 being coupled by its ends to the suction outlet 15 of the dish 12 and the suction spigot 24 respectively, an anaesthetist manipulates the bag 11 (to which he has access past the half lid 16) so as to regulate the patient's breathing. Aspirated breath, and excess anaesthetic gases, emerge into the dish 12 by way of the bag outlet 13 which the anaesthetist directs downwards into said dish 12. Air is exhausted, for instance at the rate of about 750 litres per minute, by way of the coupling tube 19 and the exhaust duct 26.
Accordingly, there is a continuous air current into the dish 12 past the half lid 16, and this mixes with the gas from the bag 11, as it passes to the coupling tube 19.
This air dilutes both the anaesthetic gases and the moisture emerging from the bag 11 and therefore is effect-ive to eliminate pollution and also minimise the risk of causing deterioration of the gàs-exhaust system, by eliminating the passage of highly saturated vapours therethrough. -The invention"is not confined to the precise details of the foregoing example, and variations may be made thereto. Thus, for instance, the dish 12 can be of different configuration from what is shown, and the half lid 16 may be omitted, provided l 160S~7 the arrangement i~ such to en~ure that there i9 a~
a~6s air inflow to mix with and dilute ~4ff~coming ~rom he outlet 13 from the bag 11 and that access ¢an be had to the latter for manipulation. A~ ~hown in Fig..2 of the drawing, the apparatu~ may be employed with an endotracheal tube 40, having an inflatable cuff 41, inflatable by way of an inflation tube 42, in the plaoe of the face mask 31.
Claims (3)
1. An anaesthetic gas scavenging device specifically adapted for use by paediatricians and comprising an intertracheal tube or a face mask for application to a patient's face, connected, by a flexible tube which is adapted to be connected also to an anaesthetic gas supply, to a compressible bag to which anaesthetic gas and exhaled air passes, said bag having an outlet into a collector dish which accommodates said bag and which is provided with a half lid facilitating access to the bag for manipulation thereof and also permitting entry of environmental air to dilute the anaesthetic gas and breath received from the outlet from the bag, said dish having a suction outlet connected to an exhaust duct by a flexible coupling hose.
2. A device as claimed in claim 1 wherein a perforate plate is provided within the collector dish for the bag to rest thereon.
3. A device as claimed in claim 1 or 2 in which the collector dish is supported by the suction outlet thereof projecting through a supporting ring provided at the free end of an arm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8007244 | 1980-03-04 | ||
| GB8007244 | 1980-03-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1160537A true CA1160537A (en) | 1984-01-17 |
Family
ID=10511832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000372152A Expired CA1160537A (en) | 1980-03-04 | 1981-03-03 | Anaesthetic gas scavenging device |
Country Status (7)
| Country | Link |
|---|---|
| BE (1) | BE887307A (en) |
| CA (1) | CA1160537A (en) |
| CH (1) | CH649004A5 (en) |
| GB (1) | GB2070940B (en) |
| IE (1) | IE50685B1 (en) |
| NL (1) | NL180173C (en) |
| NO (1) | NO149947C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8314981D0 (en) * | 1983-05-31 | 1983-07-06 | Carden E | Anaesthetist's gas pollution inhibitor |
| US4840169A (en) * | 1986-11-13 | 1989-06-20 | Fred Folsom | Ventilation system for artists |
| WO1990002577A1 (en) * | 1988-09-07 | 1990-03-22 | Bani International Operations Pty. Ltd. | Improvements relating to anaesthetic gas delivery devices |
| GB9610060D0 (en) * | 1996-05-14 | 1996-07-17 | Aglan Magdy Y | An anaesthesia breathing bag and a connecting piece |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2213764A1 (en) * | 1972-03-22 | 1973-09-27 | Richter Ferenczi Hanns Juergen | ANESTHETIC EQUIPMENT |
| DE2445701A1 (en) * | 1974-09-25 | 1976-04-08 | Kurt Frey | Closed system venting of narcotic gases - using an air operated ejector and narcotic gas collecting chamber |
| US4109651A (en) * | 1975-11-19 | 1978-08-29 | Steigerwald Allan M | Anesthetic gas exhaust system |
| US4176666A (en) * | 1976-06-01 | 1979-12-04 | Hovey Thomas C | Gas scavenger system |
-
1981
- 1981-01-19 GB GB8101526A patent/GB2070940B/en not_active Expired
- 1981-01-22 NO NO810205A patent/NO149947C/en unknown
- 1981-01-28 NL NLAANVRAGE8100393,A patent/NL180173C/en not_active IP Right Cessation
- 1981-01-30 BE BE2/58989A patent/BE887307A/en not_active IP Right Cessation
- 1981-02-04 CH CH710/81A patent/CH649004A5/en not_active IP Right Cessation
- 1981-02-06 IE IE224/81A patent/IE50685B1/en unknown
- 1981-03-03 CA CA000372152A patent/CA1160537A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH649004A5 (en) | 1985-04-30 |
| GB2070940A (en) | 1981-09-16 |
| GB2070940B (en) | 1983-07-06 |
| BE887307A (en) | 1981-05-14 |
| NL180173C (en) | 1987-01-16 |
| NO149947B (en) | 1984-04-16 |
| NO149947C (en) | 1984-07-25 |
| NO810205L (en) | 1981-09-07 |
| IE50685B1 (en) | 1986-06-11 |
| NL8100393A (en) | 1981-10-01 |
| IE810224L (en) | 1981-09-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |