JPS6319188B2 - - Google Patents
Info
- Publication number
- JPS6319188B2 JPS6319188B2 JP1852184A JP1852184A JPS6319188B2 JP S6319188 B2 JPS6319188 B2 JP S6319188B2 JP 1852184 A JP1852184 A JP 1852184A JP 1852184 A JP1852184 A JP 1852184A JP S6319188 B2 JPS6319188 B2 JP S6319188B2
- Authority
- JP
- Japan
- Prior art keywords
- breathing
- breathing gas
- valve
- frequency
- steam
- 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
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 74
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 238000010438 heat treatment Methods 0.000 claims description 12
- 230000000241 respiratory effect Effects 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 54
- 239000000203 mixture Substances 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229920006395 saturated elastomer Polymers 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. mouth-to-mouth respiration; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/14—Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
- A61M16/16—Devices to humidify the respiration 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
- A61M16/0096—High frequency jet ventilation
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hematology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Animal Behavior & Ethology (AREA)
- Heart & Thoracic Surgery (AREA)
- Pulmonology (AREA)
- Emergency Medicine (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
- Devices For Medical Bathing And Washing (AREA)
- Medicines Containing Plant Substances (AREA)
Description
【発明の詳細な説明】
本発明は、呼吸ガス源と気管内チユーブとを結
ぶ呼吸ガス通路中に給湿装置および呼吸ガス加熱
装置があり、呼吸ガス通路中の高開閉数弁により
制御される高頻数呼吸用呼吸装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention includes a humidification device and a breathing gas heating device in a breathing gas passage connecting a breathing gas source and an endotracheal tube, which are controlled by a high opening/closing frequency valve in the breathing gas passage. This invention relates to a breathing apparatus for high-frequency breathing.
高頻数呼吸（HFJV）における重大な問題は、
呼吸ガスの給湿および温度の制御である。患者に
供給されるガス混合物は、２つの分流、即ち高い
初圧下にノズルまたはカニユーレにより吹き込ま
れる呼吸ガス（ジエツト呼吸）と噴射作用により
吸い込まれる添加ガスから成る。この場合、高頻
数呼吸では呼吸ガスの流れ中にガス圧衝撃が生成
される。 A significant problem in high frequency breathing (HFJV) is
Control of breathing gas humidification and temperature. The gas mixture supplied to the patient consists of two sub-streams: the breathing gas which is blown in by a nozzle or cannula under high initial pressure (jet breathing) and the additive gas which is drawn in by means of a jet action. In this case, high-frequency breathing generates gas pressure shocks in the flow of breathing gas.
ヒトに使用するための呼吸または人工呼吸を支
持するための公知の装置は、気管内チユーブの軸
に対して平行に配置されている細い噴流管を有す
る。この噴流管に、制御装置を経て呼吸ガスが加
圧力下に供給される。気管内チユーブに向けられ
た噴流は、肺を膨張させる。噴流管の開口の範囲
内でその側方に、気管内チユーブ壁中に湿分の供
給管が設けられている。該供給管から、湿分は呼
吸ガス噴流の噴射作用により吸い込まれる。湿分
は、噴霧された水、湿り空気または蒸気として供
給される（西ドイツ国特許出願公開第2603063号
明細書）。この場合噴霧された水は、その蒸発熱
により患者の体を所望でない方法で冷却する。湿
り空気は、呼吸ガス噴流により湿分が減少し、従
つて所望の高い湿度に達する事が出来ない。蒸気
を直接に気管内チユーブ中へ導入する場合、蒸気
温度は高い危険をもたらす。 Known devices for supporting breathing or artificial respiration for human use have a narrow jet tube that is arranged parallel to the axis of the endotracheal tube. Breathing gas is supplied to this jet tube under pressure via a control device. Jets directed into the endotracheal tube inflate the lungs. In the area of the opening of the jet tube and laterally thereof, a moisture supply tube is provided in the wall of the endotracheal tube. From the supply pipe, moisture is sucked in by the jet action of the breathing gas jet. Moisture is supplied as atomized water, moist air or steam (DE-A-2603063). In this case, the sprayed water cools the patient's body in an undesired manner due to its heat of evaporation. The humid air is dehydrated by the breathing gas jet and therefore cannot reach the desired high humidity. If steam is introduced directly into the endotracheal tube, the steam temperature poses a high risk.
高頻数呼吸の行なわれる公知の強制呼吸装置で
は、酸素・空気のミキサとして形成された呼吸ガ
ス源は呼吸ガス導管により第１の熱交換器、電磁
弁および第２の熱交換器を介して噴出口と接続さ
れている。噴出口は気管内チユーブ中に配置され
ている。配量ポンプは、逆止弁を介して電磁弁と
第２の熱交換器との間の呼吸ガス導管に接続され
ている。該ポンプは、液状の水の所定の流れを呼
吸気導管中へ送入する。電磁弁は、制御装置によ
り高開閉数制御される。この場合、該電磁弁は、
噴出口に呼吸気源から3.5バールまでの圧力下の
呼吸ガス衝撃を送る。その途中で、この呼吸ガス
は第１の熱交換器中で予熱され、電磁弁の後方で
必要な水分量が与えられ、引続き第２の熱交換器
中で添加された水が蒸発するまで加熱される。噴
出口から出た後、呼吸ガスは体温を有しかつ湿分
で飽和されているべきである（Respiratory
Care、1982年11月、Vol.27、No.11、第1386〜
1391ページ）。しかしこの目的は、圧力下の呼吸
ガス中に添加された水が第２の熱交換器中で蒸発
するので達成されない。何故なら室温に予熱する
際平衡条件に基づき呼吸気は膨張後過小の湿分を
含有するか、もしくはより高い温度に予熱する場
合湿分は所望の方法で増加するが、同時に温度が
許容しえない方法で上昇するからである。さら
に、第２の熱交換器の空所により、電磁弁により
つくられる高頻数呼吸ガス衝撃を補整し、それに
よりその作用が不所望に変化する緩衝容積が生じ
る。 In known forced breathing devices for high-frequency breathing, a source of breathing gas formed as an oxygen/air mixer is connected via a breathing gas conduit via a first heat exchanger, a solenoid valve and a second heat exchanger. Connected to the spout. The spout is located in the endotracheal tube. The metering pump is connected via a check valve to the breathing gas conduit between the solenoid valve and the second heat exchanger. The pump delivers a predetermined flow of liquid water into the respiratory conduit. The solenoid valve is controlled at a high opening/closing frequency by a control device. In this case, the solenoid valve is
Send a breathing gas impulse at a pressure of up to 3.5 bar from a breathing air source to the nozzle. Along the way, this breathing gas is preheated in a first heat exchanger, provided with the required moisture content after the solenoid valve, and subsequently heated in a second heat exchanger until the added water evaporates. be done. After exiting the vent, the respiratory gas should have body temperature and be saturated with moisture.
Care, November 1982, Vol.27, No.11, No. 1386~
1391 pages). However, this objective is not achieved since the water added to the breathing gas under pressure evaporates in the second heat exchanger. This is because, under equilibrium conditions, when preheating to room temperature, the breathing air contains too little moisture after expansion, or when preheating to a higher temperature, the moisture increases in the desired manner, but at the same time the temperature is not acceptable. This is because it rises in a different way. Furthermore, the cavity of the second heat exchanger creates a buffer volume that compensates for the high frequency breathing gas impulses created by the solenoid valve, thereby undesirably changing its effect.
本発明の課題は、呼吸ガスのための給湿装置を
備えた、高頻数呼吸用呼吸装置であつて、その後
方の呼吸ガスは膨張した状態で37℃の温度および
高い相対湿度を有しかつ患者にとり呼吸ガス衝撃
の強さを著しく損なう事なく利用できる呼吸装置
を提供する事である。 The object of the invention is a high-frequency breathing apparatus with a humidification device for the breathing gas, behind which the breathing gas has a temperature of 37° C. and a high relative humidity in the expanded state. Moreover, it is an object of the present invention to provide a breathing apparatus that can be used without significantly impairing the strength of respiratory gas shock for patients.
この課題は本発明によれば、給湿装置が、水の
供給される蒸気発生装置であつて、呼吸ガス加熱
装置と噴出口との間で蒸気導管を介して呼吸ガス
の供給される蒸気発生装置であり、該給湿装置は
蒸気導管により呼吸ガス導管に、その噴出口と呼
吸ガス加熱装置との間で接続されておりかつ高開
閉数弁と関連して蒸気発生装置を接続する制御装
置を有する事により解決される。 According to the present invention, the humidification device is a steam generator supplied with water, and the steam generator is supplied with breathing gas through a steam conduit between a breathing gas heating device and a spout. a control device for connecting the steam generator in conjunction with a high switching frequency valve; This can be solved by having
本発明の実施においては、蒸気発生装置の種々
の形態が可能である。これは加熱された細い蒸気
蛇管、および水導管を介して接続された、水の供
給される配量ポンプであつてもよく、その場合こ
のポンプは制御装置により高開閉数弁と関連して
作動するか、もしくは水の供給される圧力容器お
よび接続されたオン・オフ弁であつてもよく、そ
の場合この弁は制御装置により高開閉数弁と関連
して作動する。 Various configurations of the steam generator are possible in the implementation of the invention. This can be a water-supplied metering pump connected via a heated narrow steam pipe and a water line, in which case this pump is operated by a control unit in conjunction with a high switching valve. Alternatively, it may be a pressure vessel supplied with water and a connected on/off valve, in which case this valve is operated by a control device in conjunction with a high switching frequency valve.
本発明で得られる利点は殊に、少なくともそこ
に存在する圧力および相応に高い温度で呼吸気導
管中へ噴射された水蒸気により放圧後37℃の患者
の所望の温度における高い相対湿度が得られる点
である。呼吸気の給湿および加熱のために調達す
べきエネルギーの主要部分がこの処置方法では水
蒸気によりもたらさるので、ガス混合物をこの37
℃に加熱するために、ほんのわずかな付加的呼吸
ガス加熱導管しか必要でない。このため、わずか
な内容積およびわずかな流動抵抗の呼吸ガス加熱
装置の幾何学的設計が出来るので、呼吸ガス衝撃
はわずかに減衰されるにすぎない。呼吸ガス導管
中の個々の気体衝撃のガス混合物量の短い滞留時
間は、再凝縮を妨げる。場合によつて生じる部分
凝縮は混合物を、放圧後わずかな小滴分の新たな
蒸発のために十分な熱エネルギーが利用できる程
度に加熱する。 The advantages obtained with the invention are, in particular, that at least the pressure present and the water vapor injected into the respiratory conduit at a correspondingly high temperature result in a high relative humidity at the desired temperature of the patient of 37° C. after depressurization. It is a point. This 37
Only a few additional breathing gas heating conduits are required for heating to °C. This allows a geometrical design of the breathing gas heating device with a small internal volume and a small flow resistance, so that the breathing gas impact is only slightly attenuated. The short residence time of the gas mixture volume of the individual gas impulses in the breathing gas conduit prevents recondensation. The partial condensation that may occur heats the mixture to such an extent that, after depressurization, sufficient thermal energy is available for further evaporation of the few droplets.
本発明の実施例は図面に示されており、次にこ
れを詳述する。 Embodiments of the invention are shown in the drawings and will now be described in detail.
呼吸装置は、図面に示された、呼吸ガス用高圧
部と図示されていない噴出口５と結合された添加
ガス部（患者系）とから成る。 The breathing apparatus consists of a high-pressure part for the breathing gas, shown in the drawing, and an additional gas part (patient system) connected to an outlet 5, not shown.
高圧下の呼吸ガスは、呼吸ガス源１から呼吸ガ
ス導管２中へ導入され、次いで高開閉数弁３、呼
吸ガス加熱装置４および噴出口５を貫流する。こ
こで呼吸ガスは放圧され、６で示した患者の方向
に吹き込まれる。 Breathing gas under high pressure is introduced from a breathing gas source 1 into a breathing gas conduit 2 and then flows through a high switching frequency valve 3, a breathing gas heating device 4 and an outlet 5. The breathing gas is now depressurized and blown in the direction of the patient indicated at 6.
高開閉数弁３の開閉は、制御装置７により行な
われる。 The opening and closing of the high opening/closing number valve 3 is performed by the control device 7.
呼吸ガス加熱装置４と噴出口５との間で８で蒸
気導管９は呼吸ガス導管２に接続され、該蒸気導
管により水蒸気発生装置内に生じた水蒸気は制御
装置７により、高開閉数弁３に依存して制御され
て、吹き込まれる。 A steam conduit 9 is connected to the breathing gas conduit 2 at 8 between the breathing gas heating device 4 and the spout 5, and the steam generated in the steam generator by the steam conduit is controlled by the control device 7 to control the high opening/closing frequency valve 3. controlled and infused depending on.
第１図は、細い蒸気蛇管１０（0.3〜1.5mmの内
径を有し、通常外部から加熱される金属管）およ
び配量ポンプ１２から成る蒸気発生装置を示す。
蒸発すべき水は１１で供給され、配量ポンプ１２
（制御装置７から制御される）から、水導管１３
を通つて蒸気蛇管１０中へ圧入され、そこで蒸発
し、水蒸気となつて蒸気導管９を通つて呼吸ガス
導管２中へ吹き込まれる。ここで、呼吸ガス加熱
装置４中で加熱された呼吸ガスに混入する。 FIG. 1 shows a steam generation device consisting of a narrow steam corrugated tube 10 (a metal tube with an internal diameter of 0.3 to 1.5 mm, usually externally heated) and a metering pump 12.
Water to be evaporated is supplied at 11 and metering pump 12
(controlled by control device 7) from water conduit 13
It is forced into the steam conduit 10 through the vapor conduit 10, where it evaporates and is blown as water vapor through the steam conduit 9 into the breathing gas conduit 2. Here, it is mixed into the breathing gas heated in the breathing gas heating device 4.
第２図は、１１で水が供給される圧力容器１
４、および接続されたオン・オフ弁（Auf−Zu−
Ventil）１５から成る蒸気発生装置を示す。圧力
容器１４中で連続的に水蒸気が発生し、該水蒸気
は次いで制御装置７により高開閉数弁３に依存し
て制御されるオン・オフ弁１５により、蒸気導管
９を通つて呼吸ガス導管２中へ吹き込まれる。 Figure 2 shows a pressure vessel 1 to which water is supplied at 11.
4, and the connected on-off valve (Auf-Zu-
This figure shows a steam generator consisting of Ventil) 15. Water vapor is continuously generated in the pressure vessel 14, which is then passed through the steam line 9 to the breathing gas line 2 by means of an on-off valve 15 which is controlled by the control device 7 in dependence on the high switching valve 3. blown inside.
蒸気発生装置中で発生し、呼吸ガス導管２中の
呼吸ガスの圧力でこの中へ吹き込まれる水蒸気
は、呼吸ガス導管２中に存在する圧力に適合され
て、たとえば160℃の温度を有する。この場合、
該水蒸気は、噴出口５の背後で蒸気混合物の放圧
後、37℃の温度で所望の高い相対湿度を表わす、
水量を含有する。供給された呼吸ガスと水蒸気と
で形成される混合物温度は、所望の37℃よりほん
のわずか低い。従つて、呼吸ガス加熱装置４中
で、これを達成するために、ほんのわずかな火力
が必要であるにすぎない。呼吸ガス導管２中のガ
ス混合物の短い滞留時間は、不利な水の再凝縮を
もたらさない。 The water vapor generated in the steam generator and blown into it at the pressure of the breathing gas in the breathing gas line 2 has a temperature of, for example, 160° C., adapted to the pressure present in the breathing gas line 2. in this case,
The water vapor exhibits the desired high relative humidity at a temperature of 37° C. after depressurization of the vapor mixture behind the spout 5;
Contains amount of water. The temperature of the mixture formed by the supplied breathing gas and water vapor is only slightly lower than the desired 37°C. Therefore, only a small amount of thermal power is required in the breathing gas heating device 4 to achieve this. The short residence time of the gas mixture in the breathing gas conduit 2 does not lead to unfavorable water recondensation.
図面は、蒸気発生装置の異なる本発明の実施例
を示すもので、第１図は蒸気蛇管中で水蒸気の発
生する呼吸装置の高圧部を示す略図であり、第２
図は圧力容器中で水蒸気の発生する呼吸装置の高
圧部を示す略図である。
２……呼吸ガス導管、３……高開閉数弁、４…
…呼吸ガス加熱装置、５……噴出口、７……制御
装置、９……蒸気導管、１０……蒸気蛇管、１１
……蒸気発生装置、１２……配量ポンプ、１３…
…水導管、１４……圧力容器、１５……オン・オ
フ弁。
The drawings show different embodiments of the present invention of steam generators, and FIG.
The figure is a schematic diagram showing the high-pressure part of a breathing apparatus in which water vapor is generated in a pressure vessel. 2... Breathing gas conduit, 3... High opening/closing frequency valve, 4...
... Breathing gas heating device, 5 ... Spout, 7 ... Control device, 9 ... Steam conduit, 10 ... Steam serpentine pipe, 11
...Steam generator, 12...Dosing pump, 13...
...Water conduit, 14...Pressure vessel, 15...On/off valve.
Claims (1)
ス通路中に給湿装置および加熱装置があり、呼吸
ガス導管中の高開閉弁により制御される高頻数呼
吸用呼吸装置において、給湿装置が水の供給され
る蒸気発生装置１であり、該給湿装置は蒸気導管
９により呼吸ガス導管２にその噴出口５と呼吸ガ
ス加熱装置４との間で接続されておりかつ高開閉
数弁３と関連して蒸気発生装置を作動する制御装
置７を有することを特徴とする高頻数呼吸用呼吸
装置。 ２ 蒸気発生装置が加熱された細い蒸気蛇管１０
および水導管を介して接続された、水の供給され
る配量ポンプ１２であり、その場合該ポンプは制
御装置７により高開閉数弁３と関連して作動す
る、特許請求の範囲第１項記載の高頻数呼吸用呼
吸装置。 ３ 蒸気蛇管１０が0.3〜1.5mmの内径を有する金
属管である、特許請求の範囲第１項または第２項
記載の高頻数呼吸用呼吸装置。 ４ 蒸気発生装置が、水の供給される圧力容器１
４および接続されたオン・オフ弁１５であり、そ
の場合該オン・オフ弁は制御装置７により高開閉
数弁３により作動する、特許請求の範囲第１項記
載の高頻数呼吸用呼吸装置。[Scope of Claims] 1. A breathing apparatus for high-frequency breathing, which includes a humidifier and a heating device in the breathing gas passage connecting the breathing gas source and the endotracheal tube, and is controlled by a high opening/closing valve in the breathing gas conduit. , the humidifying device is a steam generator 1 supplied with water, which is connected to the breathing gas conduit 2 by a steam conduit 9 between its outlet 5 and the breathing gas heating device 4. A breathing apparatus for high-frequency breathing, characterized in that it has a control device 7 that operates a steam generator in conjunction with the high-opening/closing-number valve 3. 2 Thin steam serpentine pipe 10 heated by steam generator
and a water-supplied metering pump (12) connected via a water conduit, the pump being operated by a control device (7) in conjunction with a high switching frequency valve (3). High-frequency breathing breathing apparatus as described. 3. The respiratory apparatus for high-frequency breathing according to claim 1 or 2, wherein the steam serpentine tube 10 is a metal tube having an inner diameter of 0.3 to 1.5 mm. 4 Pressure vessel 1 to which the steam generator is supplied with water
4 and a connected on/off valve 15, in which case the on/off valve is actuated by the high opening/closing frequency valve 3 by the control device 7, the high frequency breathing breathing apparatus according to claim 1. .
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19833308819 DE3308819A1 (en) | 1983-03-12 | 1983-03-12 | VENTILATOR WITH HIGH FREQUENCY VENTILATION |
| DE3308819.5 | 1983-03-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59168859A JPS59168859A (en) | 1984-09-22 |
| JPS6319188B2 true JPS6319188B2 (en) | 1988-04-21 |
Family
ID=6193266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1852184A Granted JPS59168859A (en) | 1983-03-12 | 1984-02-06 | Respiration apparatus having high frequency respiration |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS59168859A (en) |
| CH (1) | CH661210A5 (en) |
| DE (1) | DE3308819A1 (en) |
| FR (1) | FR2542204B1 (en) |
| GB (1) | GB2136298B (en) |
| SE (1) | SE454951B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3401849A1 (en) * | 1984-01-20 | 1985-07-25 | Drägerwerk AG, 2400 Lübeck | VENTILATOR WITH HIGH FREQUENCY VENTILATION |
| DE4300880C2 (en) * | 1993-01-15 | 1996-03-21 | Draegerwerk Ag | Ultrasonic nebulizer with dosing unit |
| WO2020039724A1 (en) * | 2018-08-22 | 2020-02-27 | 株式会社村田製作所 | Humidification device and respiratory humidifying air blower equipped with same |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3434471A (en) * | 1966-04-06 | 1969-03-25 | Smithkline Corp | Therapeutic intermittent positive pressure respirator |
| CH489758A (en) * | 1968-04-25 | 1970-04-30 | Badertscher Hans | Water evaporator |
| GB1294808A (en) * | 1971-08-19 | 1972-11-01 | Philips Electronic Associated | Temperature-controlled gas humidifier for a medical ventilator |
| DE2516496C3 (en) * | 1975-04-15 | 1978-03-23 | Draegerwerk Ag, 2400 Luebeck | Device for humidifying the breathing gas |
| DD139795B1 (en) * | 1978-12-04 | 1980-11-26 | Klaus Dipl Ing Dr Rer Nat Jehmlich | VENTILATOR WITH DEVIATION DEVICE |
| FI66753C (en) * | 1979-01-05 | 1984-12-10 | Taisto Haekkinen | RYTMISERINGSVENTIL FOER ANDNINGEN AVSEDD FOER RESPIRATOR ELLERFOER ANNAN UPPLIVNINGSANVAENDNING LAEMPAD ANORDNING |
-
1983
- 1983-03-12 DE DE19833308819 patent/DE3308819A1/en not_active Ceased
- 1983-10-31 CH CH588083A patent/CH661210A5/en not_active IP Right Cessation
- 1983-11-21 SE SE8306413A patent/SE454951B/en not_active IP Right Cessation
-
1984
- 1984-02-06 JP JP1852184A patent/JPS59168859A/en active Granted
- 1984-02-20 GB GB08404441A patent/GB2136298B/en not_active Expired
- 1984-03-06 FR FR8404163A patent/FR2542204B1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59168859A (en) | 1984-09-22 |
| GB2136298B (en) | 1986-05-14 |
| CH661210A5 (en) | 1987-07-15 |
| SE8306413L (en) | 1984-09-13 |
| SE8306413D0 (en) | 1983-11-21 |
| GB2136298A (en) | 1984-09-19 |
| FR2542204B1 (en) | 1986-09-26 |
| FR2542204A1 (en) | 1984-09-14 |
| GB8404441D0 (en) | 1984-03-28 |
| DE3308819A1 (en) | 1984-09-13 |
| SE454951B (en) | 1988-06-13 |
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