SE455166B - ANGAS GAS SUPPLY SYSTEM WITH PNEUMATIC CONTROL - Google Patents
ANGAS GAS SUPPLY SYSTEM WITH PNEUMATIC CONTROLInfo
- Publication number
- SE455166B SE455166B SE8306045A SE8306045A SE455166B SE 455166 B SE455166 B SE 455166B SE 8306045 A SE8306045 A SE 8306045A SE 8306045 A SE8306045 A SE 8306045A SE 455166 B SE455166 B SE 455166B
- Authority
- SE
- Sweden
- Prior art keywords
- gas
- valve
- gas supply
- bellows
- supply system
- Prior art date
Links
- 239000007789 gas Substances 0.000 claims description 32
- 239000003994 anesthetic gas Substances 0.000 claims description 9
- 230000029058 respiratory gaseous exchange Effects 0.000 description 7
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 3
- 230000003444 anaesthetic effect Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 210000004072 lung Anatomy 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000001272 nitrous oxide Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 244000144985 peep Species 0.000 description 1
- 239000003380 propellant Substances 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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
- A61M16/0057—Pumps therefor
- A61M16/0081—Bag or bellow in a bottle
-
- 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
-
- 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
- A61M16/0057—Pumps therefor
- A61M16/0075—Bellows-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
- A61M16/0057—Pumps therefor
- A61M16/0078—Breathing bags
-
- 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
- A61M2205/42—Reducing noise
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)
- Percussion Or Vibration Massage (AREA)
Description
05 10 15 20 25 30 35 455 166 2 bälgen. När man har uppnått omkopplingstrycket för omkopp- lingsventilen inleds genast utandningsfasen. Det är inte möjligt att anordna en stopptid, under vilken bälgen hålls sammantryckt under minimal förbrukning av drivgas, så att den transporterade andningsgasen kan fördela sig i lungorna. 05 10 15 20 25 30 35 455 166 2 bellows. When the switching pressure of the switching valve has been reached, the exhalation phase begins immediately. It is not possible to provide a stopping time, during which the bellows is kept compressed during minimal consumption of propellant gas, so that the transported breathing gas can be distributed in the lungs.
Driften belastas av användningen av ett injektorsystem med den därför typiska, starka brusutvecklingen (DE-OS 2 745 308).Operation is burdened by the use of an injector system with the therefore typical, strong noise development (DE-OS 2 745 308).
Målet för uppfinningen var att ta fram ett till sin uppbygg- nad enkelt, pneumatiskt styrt narkosgas-försörjningssystem, som uppvisar ringa tryckgasförbrukning och låg brusutveck- ling.The object of the invention was to develop a simple, pneumatically controlled anesthetic gas supply system, which has a low pressure gas consumption and low noise generation.
Denna uppgift löses pâ det sätt som framgår av patentkravets kännetecknande del.This task is solved in the manner set out in the characterizing part of the claim.
Tryckgasmängdregulatorn sörjer vid kretsloppsmanövrering av andningsluften för en låg tryckgasförbrukning. Sammanpress- ningen av bälgen och åtföljande transport av andningsgasen till patienten försiggâr under ett första avsnitt av inand- ningsfasen. Därefter följer i nästa avsnitt en stopptid, un- der vilken bälgen hålls sammanpressad och den transporterade andningsgasen kan fördelas till lungorna. Under denna stopp- tid är den reglerventil, som släpper igenom den stora tryck- gasmängden, stängd. Det strömmar endast en ringa tryckgas- mängd genom strypningen för att hålla bälgen sammanpressad.The compressed gas flow regulator ensures a low compressed gas consumption during cycle operation of the breathing air. The compression of the bellows and the concomitant transport of the respiratory gas to the patient takes place during a first section of the inhalation phase. This is followed in the next section by a stopping time, during which the bellows is kept compressed and the transported breathing gas can be distributed to the lungs. During this stop time, the control valve, which lets the large amount of compressed gas through, is closed. Only a small amount of compressed gas flows through the throttle to keep the bellows compressed.
Brusreduktionen är påtaglig.The noise reduction is noticeable.
Ett utföringsexempel av uppfinningen är âskådliggjort i bifo- gade ritningsfigurer och uppfinningen belyses närmare nedan i anslutning därtill.An embodiment of the invention is illustrated in the accompanying drawing figures and the invention is illustrated in more detail below in connection therewith.
Figur 1 visar den schematiska uppbyggnaden av narkosgas-för- sörjningssystemet och Pig 2 visar den schematiska uppbyggna- den av tryckgasmängdregulatorn.Figure 1 shows the schematic structure of the anesthetic gas supply system and Pig 2 shows the schematic structure of the pressurized gas flow regulator.
Det i Fig 1 visade narkosgas-försörjningssystemet kan uppde- las i tre huvudkomponenter. Komponent A omfattar det krets- 05 10 15 20 25 30 35 3 455 166 system, i vilket narkosförsörjningsgasen ledes i "krets".The anesthetic gas supply system shown in Fig. 1 can be divided into three main components. Component A comprises the circuit system in which the anesthetic supply gas is conducted in a "circuit".
Komponent B innehåller narkos-färskgasanrikningen beträffan- de koncentration och mängd. Komponent C omfattar delarna i gasförsörjningsapparaten.Component B contains the anesthetic-fresh gas enrichment in terms of concentration and amount. Component C comprises the parts of the gas supply device.
En narkosgas-försörjningsapparat med ledningar för andnings- luft i kretslopp kräver en bälg 1 för uppsamling av andnings- luften. Bälgvolymen kan väljas med hjälp av höjdinställningen 2 så att andetagsvolymen VT kan inställas. Gasförsörjnings- apparaten styrs av den pneumatiska styrningen 3. I denna återfinns reglage för gasförsörjningsfrekvensen 4 och det positiva endexspiratoriskatrycketPEEP 5. Under inandnings- fasen stängs utandningsventilen 6 och utsugningsventilen 7 medan huvudventilen 8 öppnas.An anesthetic gas supply device with breathing air lines in circulation requires a bellows 1 for collecting the breathing air. The bellows volume can be selected using the height setting 2 so that the breath volume VT can be set. The gas supply device is controlled by the pneumatic control 3. This contains controls for the gas supply frequency 4 and the positive end-expiratory pressure PEEP 5. During the inhalation phase, the exhalation valve 6 and the exhaust valve 7 are closed while the main valve 8 is opened.
Allt efter inställningen av tryckgasmängdregulatorn 9 hamnar tryckgas från tryckreduktionsenheten 10, som även försörjer styrenheten 3, i kåpan 11 och trycker samman bälgen 1. Den i bälgen 1 befintliga andningsgasen hamnar via omkopplingsven- tilen automatik-manuellt 25, C02-absorptionsenheten 13 och envägsventilen 14 till den symboliskt angivna patienten 15.Depending on the setting of the pressurized gas flow regulator 9, pressurized gas from the pressure reducing unit 10, which also supplies the control unit 3, ends up in the housing 11 and compresses the bellows 1. The breathing gas present in the bellows 1 ends up automatically via the switching valve 25, the CO 2 absorption unit 13 and the one-way valve to the symbolically indicated patient 15.
Ventilen 16 begränsar trycket och eventuell överskottsgas strömmar ut via narkosgasutsuget 17.The valve 16 limits the pressure and any excess gas flows out via the anesthetic gas extractor 17.
Under utandningsfasen stängs huvudventilen 8, utsugningsven- tilen 7 öppnar, kåpan 11 ventileras genom utströmning av tryckgas till atmosfärstryck över ljuddämparen 12 och sam- tidigt öppnar utandningsventilen 6.During the exhalation phase, the main valve 8 closes, the exhaust valve 7 opens, the cover 11 is ventilated by outflow of pressurized gas to atmospheric pressure over the muffler 12 and at the same time the exhalation valve 6 opens.
Genom ventilationen av kåpan 11 kan bälgen 1 åter vecklas ut så att trycket i kretssystemet sjunker och patienten 15 kan utandas via ventilen 18. Mängden utandningsgas bestäms med volymmätaren 19, gasförsörjningstrycket under in- och utand- níngen med tryckmätaren 20.Through the ventilation of the cover 11, the bellows 1 can be unfolded again so that the pressure in the circuit system drops and the patient 15 can exhale via the valve 18. The amount of exhaled gas is determined with the volume meter 19, the gas supply pressure during inhalation and exhalation with the pressure gauge 20.
Genom den under utandningstiden expanderande bälgen 1 passe- rar förutom utandningsluft från patienten även narkosfärsk- gas. Narkosfärskgasen kan vara en blandning av syre»(O2) och 05 10 15 20 25 30 35 455 166 4 lustgas (N20), som efter koncentration och mängd ställs in i mätrörblocket 21 och i hrkmsune 22 blandas med tillsatt nar- kosmedel. Gasöverskottet leds bort via utandningsventilen 6 och den lätt fjäderbelastade backventilen 23 via narkosgasut- taget 17.In addition to exhaled air from the patient, fresh anesthetic gas also passes through the expanding bellows 1 during the exhalation period. The fresh anesthetic gas can be a mixture of oxygen (O2) and nitrous oxide (N20), which, after concentration and amount, is set in the measuring tube block 21 and in hrkmsune 22 mixed with added anesthetic. The excess gas is led away via the exhalation valve 6 and the slightly spring-loaded non-return valve 23 via the anesthetic gas outlet 17.
Manuell gasförsörjning med hjälp av tryckblåsan 24 kan genom- föras efter inställning av omkopplingsventilen 25 efter manöv- rering av den av styrningen 3 försörjda omkopplaren 26. I lä- get "manuell" hos omkopplaren 26, som då är öppen, inställes omkopplingsventilen 25 så att bälgen 1 inte längre har någon förbindelse med komponenterna A och B.Manual gas supply by means of the pressure bladder 24 can be carried out after setting the switching valve 25 after operating the switch 26 supplied by the control 3. In the "manual" position of the switch 26, which is then open, the switching valve 25 is set so that the bellows 1 no longer has any connection with components A and B.
Den i Fig 2 visade tryckgasmängdregulatorn 9 reducerar under bälgens 1 stopptid (i sammanpressat tillstånd) den tryckgas- mängd, som via den under inandningen öppnade huvudventilen 8 strömmar in i kåpan 11. Tryckgasmängdregulatorn 9 försörjs med tryckgas av tryckreduktionsenheten 10.The pressurized gas flow regulator 9 shown in Fig. 2 reduces during the stopping time of the bellows 1 (in the compressed state) the amount of pressurized gas flowing into the housing 11 via the main valve 8 opened during inhalation.
Den tryckgasmängd, som strömmar in i kåpan 11, är sammansatt av den via ventilen 40 strömmande mängden V och den över den fasta strypningen 41 strömmande delströmmen.The amount of pressurized gas flowing into the housing 11 is composed of the amount V flowing via the valve 40 and the partial flow flowing over the fixed throttle 41.
Tryckvakten 42 är via ledningen 43 förbunden med kåpan 11 och öppnar ventilen 44 när det i kåpan 11 råder ett tryck mellan 0 och 80 mbar. Om trycket överstiger 80 mbar stänger tryckvak- ten 42 ventilen 44. Trycket över 80 mbar uppnås i kåpan 11 när bälgen 1, efter det första avsnittet av inandningsfasen, är sammanpressad. Eftersom ytterligare tryckgastillförsel i kåpan 11 inte skulle ha någon inverkan på andningsgastrycket i bälgen 1, stängs ventilen 44 och endast en delström av ca 3 l/min över den fasta strypningen 41 håller bälgen 1 samman- pressad i nästa fas av inandningen;När inandningstiden är till ända stängs åter huvudventilen 8, utsugningsventilen 7 öppnas och tryckgasen lämnar kåpan 11 via ljuddämparen 12.The pressure switch 42 is connected via the line 43 to the cover 11 and opens the valve 44 when there is a pressure between 0 and 80 mbar in the cover 11. If the pressure exceeds 80 mbar, the pressure switch 42 closes the valve 44. The pressure above 80 mbar is reached in the housing 11 when the bellows 1, after the first section of the inhalation phase, is compressed. Since additional compressed gas supply in the housing 11 would have no effect on the breathing gas pressure in the bellows 1, the valve 44 is closed and only a partial flow of about 3 l / min over the fixed throttle 41 keeps the bellows 1 compressed in the next phase of the inhalation; to the end, the main valve 8 is closed again, the exhaust valve 7 is opened and the compressed gas leaves the cover 11 via the muffler 12.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2945472A DE2945472C2 (en) | 1979-11-10 | 1979-11-10 | Anesthesia ventilation system with pneumatic control |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| SE8306045L SE8306045L (en) | 1983-11-03 |
| SE8306045D0 SE8306045D0 (en) | 1983-11-03 |
| SE455166B true SE455166B (en) | 1988-06-27 |
Family
ID=6085668
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE8006238A SE443722B (en) | 1979-11-10 | 1980-09-08 | ANGAS GAS SUPPLY SYSTEM WITH PNEUMATIC CONTROL |
| SE8306045A SE455166B (en) | 1979-11-10 | 1983-11-03 | ANGAS GAS SUPPLY SYSTEM WITH PNEUMATIC CONTROL |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE8006238A SE443722B (en) | 1979-11-10 | 1980-09-08 | ANGAS GAS SUPPLY SYSTEM WITH PNEUMATIC CONTROL |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE2945472C2 (en) |
| GB (1) | GB2062475B (en) |
| SE (2) | SE443722B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0744184A1 (en) * | 1995-05-24 | 1996-11-27 | Siemens-Elema AB | Reservoir for a gas in a ventilator/anaesthetic system |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3303998A1 (en) * | 1982-05-21 | 1983-11-24 | Veb Kombinat Medizin- Und Labortechnik Leipzig, Ddr 7035 Leipzig | Ventilator |
| DD218731A3 (en) * | 1982-11-12 | 1985-02-13 | Medizin Labortechnik Veb K | VENTILATION DEVICE FOR AUTOMATIC AND MANUAL VENTILATION WITH NARCOSIS VENTILATION |
| DE3434908A1 (en) * | 1984-09-22 | 1986-04-03 | Drägerwerk AG, 2400 Lübeck | CONTROL UNIT FOR A BREATHING SYSTEM |
| DE3607320A1 (en) * | 1986-03-06 | 1987-09-10 | Draegerwerk Ag | DEVICE FOR CONTROLLING BREATH GAS IN A NARCOSE OR VENTILATOR |
| DE3712388A1 (en) * | 1987-04-11 | 1988-10-27 | Obermayer Anton | Breathing aid |
| DE3712598A1 (en) * | 1987-04-14 | 1988-10-27 | Siemens Ag | INHALATION ANESTHESIS DEVICE |
| DE4142295C2 (en) * | 1991-12-20 | 1993-11-25 | Draegerwerk Ag | Valve for generating a control pressure |
| SE9300364L (en) * | 1993-02-05 | 1994-02-21 | Siemens Elema Ab | Method for fresh gas supply for manual ventilation and a fan system for carrying out the method |
| SE501729C2 (en) * | 1994-03-24 | 1995-05-02 | Siemens Elema Ab | Respiratory gas system with a pressure transmitting selector between the breathing circuit and the propellant apparatus |
| DE4416599C2 (en) * | 1994-05-11 | 1997-03-20 | Delta Barth Systemhaus Gmbh | Ventilator |
| SE9402537L (en) * | 1994-07-20 | 1996-01-21 | Siemens Elema Ab | Anesthesia System |
| SE9503665L (en) * | 1995-10-19 | 1997-04-20 | Siemens Elema Ab | Anesthesia System |
| DE19647058C2 (en) * | 1996-11-14 | 1999-05-20 | Draegerwerk Ag | Ventilator with inspiratory fresh gas metering |
| DE19737537C1 (en) * | 1997-08-28 | 1999-05-12 | Fritz Stephan Gmbh | Breathing apparatus with gas container with variable volume for gas feed |
| SE9900368D0 (en) | 1999-02-04 | 1999-02-04 | Siemens Elema Ab | Anesthesia apparatus |
| US7007693B2 (en) | 1999-08-03 | 2006-03-07 | The Research Foundatilon Of State University Of New York | Device and method of reducing bias flow in oscillatory ventilators |
| CN102441214B (en) * | 2010-10-09 | 2016-05-04 | 深圳迈瑞生物医疗电子股份有限公司 | A kind of Anesthesia machine and assembly method |
| GB201509800D0 (en) * | 2015-06-05 | 2015-07-22 | Smiths Medical Int Ltd | Respiratory therapy apparatus |
| WO2021202394A1 (en) * | 2020-03-30 | 2021-10-07 | Airmid Critical Care Products, Inc. | Apparatus and method for convertible volume and pressure-controlled lung-protective ventilation |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD79810A (en) * | ||||
| US4007736A (en) * | 1975-03-12 | 1977-02-15 | N.A.D., Inc. | Fluidic controlled ventilator |
| CH599786A5 (en) * | 1975-10-24 | 1978-05-31 | Hoffmann La Roche | |
| US4148312A (en) * | 1976-10-08 | 1979-04-10 | Minnesota Mining And Manufacturing Company | Combination anesthesia and intensive care apparatus |
-
1979
- 1979-11-10 DE DE2945472A patent/DE2945472C2/en not_active Expired
-
1980
- 1980-09-08 SE SE8006238A patent/SE443722B/en not_active IP Right Cessation
- 1980-11-06 GB GB8035697A patent/GB2062475B/en not_active Expired
-
1983
- 1983-11-03 SE SE8306045A patent/SE455166B/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0744184A1 (en) * | 1995-05-24 | 1996-11-27 | Siemens-Elema AB | Reservoir for a gas in a ventilator/anaesthetic system |
Also Published As
| Publication number | Publication date |
|---|---|
| SE8306045L (en) | 1983-11-03 |
| DE2945472A1 (en) | 1981-05-27 |
| GB2062475A (en) | 1981-05-28 |
| SE443722B (en) | 1986-03-10 |
| DE2945472C2 (en) | 1982-12-30 |
| GB2062475B (en) | 1983-06-02 |
| SE8006238L (en) | 1981-05-11 |
| SE8306045D0 (en) | 1983-11-03 |
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| Date | Code | Title | Description |
|---|---|---|---|
| NUG | Patent has lapsed |
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