JPH06105891A - Sterilizing gas supply device for gas sterilizer - Google Patents

Abstract

PURPOSE:To enhance safety by recovering discharged gas in a freely replaceable recovery bag through the safety valve opened when the pressure of vaporized gas becomes high. CONSTITUTION:The container valve 3 and container changeover valve 5 provided to a container 2 filled with a carbon dioxide mixed type ethylene oxide sterifizing gas are opened to take out the liquefied sterilizing gas in the container 2 through a liquid sending-out pipe 10 and the liquefied sterilizing gas is sent to a first stage liquid pressure reducing controller 14 from a gathering pipe 7 through a strainer 13 and sent to an evaporator 15 while the pressure thereof is reduced to predetermined pressure and evaporated by heating when it passes through the rudder pipe 15a of the evaporator 15. The high temp. evaporated gas is reduced in pressure by a predetermined degree by a second stage liquid pressure controller 16 to be sealed in the can body of a sterilizer 20 through a sending-in operation valve 21. After the valve 21 is closed, the gas evaporated in the evaporator 15 is raised in pressure and, when a safety valve 22 is forcibly opened, the discharged gas is recovered in the receiving bag 30 of a replacing bag type discharged gas recovery device 27 through a recovery pipe 24, a recovery cutoff valve 25 and a cock 26.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】この発明は、充填容器から受入れ
た酸化エチレン滅菌ガスを、滅菌に適当な圧力、温度に
氣化調整して滅菌器に送入するために使用される滅菌ガ
ス供給装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sterilizing gas supply device used for sterilizing ethylene oxide sterilizing gas received from a filling container into a sterilizer after adjusting the pressure and temperature suitable for sterilization. It is about.

【０００２】[0002]

【従来の技術】酸化エチレン滅菌ガスの薬効成分である
酸化エチレンは、生菌、芽胞を含め各種菌に対する強い
殺菌力、浸透力を有するもので、その簡便性、確実性、
非湿潤性などから医療具製造産業用及び病院医療機関の
自家滅菌用等の分野に広く用いられている。2. Description of the Related Art Ethylene oxide, which is a medicinal component of ethylene oxide sterilization gas, has a strong bactericidal and penetrating power against various bacteria including live bacteria and spores.
Due to its non-wetting property, it is widely used in the fields of medical device manufacturing industry and self-sterilization of hospital medical institutions.

【０００３】この酸化エチレンガスは可燃性と毒性を有
するが、その可燃性については、不燃性液化ガスとの混
合稀釈により性質の緩和が図られている。例えば、フロ
ン１２（又はフロン１１，１２）の混合による「フロン
系酸化エチレン滅菌ガス」は、その容器充填圧力が低い
（常温で１０ｋｇ／ｃｍ² 未満）ことから、自家用滅菌
器の分野で多く用いられ、炭酸ガス混合による「炭酸ガ
ス系酸化エチレン滅菌ガス」は、容器充填圧力が高いな
がら低コストであるため主に産業用滅菌器の分野で多用
されて来た。しかしながら、最近のフロン規制によって
「フロン系酸化エチレン滅菌ガス」の使用が制限され、
後述の「封袋型滅菌器」を多用する自家滅菌の分野で、
高充填圧力（例えば、３０℃ 酸化エチレン１０％（ｗ
ｔ）、炭酸ガス９０％（ｗｔ）のガスの充填圧力は６５
ｋｇ／ｃｍ² ）の「炭酸ガス系」へ切替が必要となって
いる。This ethylene oxide gas has flammability and toxicity, but its flammability is alleviated by diluting it with a non-flammable liquefied gas. For example, "Freon-based ethylene oxide sterilization gas", which is a mixture of Freon 12 (or Freon 11 and 12), has a low container filling pressure (less than 10 kg / cm ^{2 at} room temperature), so it is often used in the field of private sterilizers. The "carbon dioxide gas ethylene oxide sterilization gas" obtained by mixing carbon dioxide has been widely used mainly in the field of industrial sterilizers because it has a high container filling pressure but is low in cost. However, the use of "Freon-based ethylene oxide sterilization gas" has been restricted by recent CFC regulations,
In the field of self-sterilization that makes heavy use of the "seal bag type sterilizer" described below,
High filling pressure (for example, 30 ° C, 10% ethylene oxide (w
t), the filling pressure of carbon dioxide gas 90% (wt) is 65
It is necessary to switch to the "carbon dioxide system" of kg / cm ² ).

【０００４】また、毒性については、一例として炭酸ガ
スによる１０倍稀釈（質量比）の滅菌ガスでも、その恕
限量（８時間）は１０ｐ．ｐ．ｍであり、一過性でない
強い毒性作用をもつことから、室内・作業場環境の周辺
ではいたずらに放出すべきでなく、大量に滅菌ガスを消
費・排出する産業用滅菌器（鋼製缶体、バッチ式）では
その放出ガス系路に燃焼法等の廃ガス処理装置を設けて
いることが多い。Regarding toxicity, for example, even with a sterilized gas diluted 10 times (mass ratio) with carbon dioxide, the limit amount (8 hours) is 10 p. p. Since it has a strong toxic effect that is not transient, it should not be released unnecessarily in the vicinity of the indoor or work environment, and an industrial sterilizer (steel can body, which consumes and discharges a large amount of sterilizing gas) In the batch type), a waste gas treatment device such as a combustion method is often provided in the discharge gas system passage.

【０００５】一方、病院医療機関での自家滅菌器として
は、小規模滅菌用の「封袋型滅菌器」が多用されてい
る。この装置は、予め内部に被滅菌物を収めた小型のガ
ス微透過・菌体不透過複合フィルム製の滅菌用袋の内部
を、挿入・脱出自在のノズルで自動的又は半自動的に真
空脱氣、滅菌ガス定量封入を行ったのちシールし、必要
な場合には加温インキュベーター等に入れるなどして、
経時的に滅菌するものである。この種の装置では、袋へ
の封入段階などで若干のガスが漏出するが、その漏出ガ
ス量は微量で、換氣扇等を設けておく以外に、特に排出
ガス回収対策はとられていない。On the other hand, as a self-sterilizer in hospital medical institutions, a "sealing bag sterilizer" for small-scale sterilization is often used. This device automatically or semi-automatically vacuum-displaces the inside of a small sterilization bag made of a gas-permeable, cell-impermeable composite film that contains the object to be sterilized in advance, with a nozzle that can be inserted and removed. After sealing a fixed amount of sterilized gas, seal it, and put it in a warm incubator etc. if necessary.
It is sterilized over time. In this type of device, some gas leaks at the time of filling in a bag, etc., but the amount of leaked gas is very small, and no special measures are taken to collect exhaust gas other than providing a fan or the like.

【０００６】[0006]

【発明が解決しようとする課題】しかし、前述のよう
に、フロン規制の結果自家用滅菌器に多用された低平衡
蒸氣圧力（一例、常温で１０ｋｇ／ｃｍ² 以下）のフロ
ン混合型酸化エチレン滅菌ガスの使用が制限され、高平
衡蒸氣圧力（一例、３０℃ Ｃ₂ Ｈ₄ Ｏ２０％（ｗ
ｔ），ＣＯ₂ ８０％（ｗｔ） ５７ｋｇ／ｃｍ² ）の炭
酸ガス混合型の酸化エチレン滅菌ガスが、これまでの産
業用のほか、病院・医療現場に持込まれるようになる
と、例えば滅菌器の使用間断により生じる滅菌ガス供給
装置の氣化器（蛇管等）内への封止と、その残留液化ガ
スの高圧氣化による毒性ガス不時放出等による障害発生
の機会が増加しているが、産業用、自家用を通じて、滅
菌ガス供給装置に回収装置のシステムを加えたものはな
いのが現状であり、安全性の点で問題となっている。な
お、産業用であっても、滅菌器の設置場所が離れている
ときには、滅菌ガス供給装置独自で安全弁作動等による
不時放出ガスの回収装置をもつことが望まれる。そこ
で、本発明は、上記炭酸ガス混合型酸化エチレン滅菌ガ
スの供給装置の安全性を高めることを課題としている。However, as described above, the low equilibrium vapor pressure (e.g., 10 kg / cm ² or less at room temperature) of a CFC-mixed ethylene oxide sterilization gas, which is often used in private sterilizers as a result of CFC regulations. The use of water is restricted, and high equilibrium evaporation pressure (eg, 30 ° C C ₂ H ₄ O 20% (w
t), CO ₂ 80% (wt) 57 kg / cm ² ), a carbon dioxide mixed ethylene oxide sterilization gas, when it comes to industrial and conventional hospitals and medical sites. Although there is an increasing chance of failure due to unsealed release of toxic gas due to high-pressure vaporization of the residual liquefied gas, the sterilization gas supply device is sealed inside the vaporizer (corrugated pipe, etc.) due to intermittent use. At present, there is no sterilization gas supply device with a recovery device system for industrial or private use, which is a problem in terms of safety. Even for industrial use, when the sterilizer is installed at a remote place, it is desirable that the sterilizing gas supply device has its own recovery device for the untimely released gas by operating a safety valve or the like. Therefore, an object of the present invention is to improve the safety of the carbon dioxide mixed ethylene oxide sterilization gas supply device.

【０００７】[0007]

【課題を解決するための手段】上記課題を解決するた
め、本発明は次のような構成を採用した。すなわち、本
発明にかかる滅菌ガス供給装置は、滅菌の薬効成分であ
る酸化エチレンに稀釈成分として炭酸ガスを混合し、液
化ガス状態で充填した酸化エチレン滅菌ガス容器に接続
される液化ガス受入配管と、該液化ガス受入配管を通し
て取り出される液化ガスを減圧する第一段液減圧調整器
と、液化ガスを気化させる液化ガス氣化器と、気化した
ガスを減圧する第二段ガス減圧調整器と、減圧調整され
た滅菌ガスを滅菌器に供給する接続用配管と、配管中に
介装されるガス安全弁及びガス放出弁と、当該ガス放出
弁から放出される放出ガスを回収する放出ガス回収管
と、前記放出ガス回収管の出口に接続されるガス収容型
回収装置とを備え、前記ガス収容型回収装置の回収ガス
収容部を、柔軟性を有する着脱自在な不透氣性の袋で構
成したことを特徴としている。In order to solve the above problems, the present invention employs the following configurations. That is, the sterilizing gas supply device according to the present invention is a mixture of carbon dioxide gas as a diluting component in ethylene oxide, which is a drug component of sterilization, and a liquefied gas receiving pipe connected to an ethylene oxide sterilizing gas container filled in a liquefied gas state. A first-stage liquid decompression regulator for decompressing the liquefied gas taken out through the liquefied gas receiving pipe, a liquefied gas evaporator for vaporizing the liquefied gas, and a second-stage gas decompression regulator for decompressing the vaporized gas, A connecting pipe for supplying the sterilizer with reduced pressure adjusted sterilization gas, a gas safety valve and a gas release valve interposed in the pipe, and a release gas recovery pipe for recovering the release gas released from the gas release valve. And a gas storage type recovery device connected to the outlet of the discharge gas recovery pipe, and the recovery gas storage part of the gas storage type recovery device is formed of a flexible and detachable impermeable bag. It is characterized by a door.

【０００８】[0008]

【作用】酸化エチレンと炭酸ガスの混合ガスが液体の状
態で充填されている高圧の滅菌ガス容器から液化ガスが
受入配管を通して取り出され、第一段液減圧調整器によ
って減圧されたのち、液化ガス氣化器によって気化され
る。気化したガスは、第二段ガス減圧調整器によって所
定の圧力に減圧され、接続用配管を通して滅菌器に供給
される。[Function] The liquefied gas is taken out from the high-pressure sterilization gas container filled with the mixed gas of ethylene oxide and carbon dioxide in a liquid state through the receiving pipe and decompressed by the first-stage liquid decompression regulator, and then the liquefied gas is discharged. It is vaporized by a carburetor. The vaporized gas is depressurized to a predetermined pressure by the second-stage gas depressurization regulator and supplied to the sterilizer through the connecting pipe.

【０００９】配管中にはガス安全弁とガス放出弁が介装
されており、このガス放出弁から放出される放出ガスは
放出ガス回収管を通してガス収容型回収装置に回収され
る。前述の理由で安全弁等から不時放出され、回収装置
の回収ガス収容袋に回収された回収ガスは、満杯となる
前に空袋と交換され、別に安全な方法で燃焼等処理され
る。A gas safety valve and a gas release valve are provided in the pipe, and the release gas released from the gas release valve is recovered by the gas storage type recovery device through the release gas recovery pipe. The recovery gas that is unintentionally released from the safety valve or the like for the above-mentioned reason and is recovered in the recovery gas storage bag of the recovery device is replaced with an empty bag before it becomes full, and separately burned and processed by a safe method.

【００１０】[0010]

【実施例】以下、図面に表された本発明の実施例につい
て具体的に説明する。Embodiments of the present invention shown in the drawings will be specifically described below.

【００１１】図１は本発明の１実施例を表すもので、こ
の滅菌ガス供給装置１は、炭酸ガス系、酸化エチレン滅
菌ガス充填容器（高圧ガス容器）２に設けられた容器弁
３の出口に容器接手４が接続され、容器切替弁５、連結
ホース６を経て、集合管７に接続されている。この滅菌
ガス受入配管系は並列に設けられた複数列で構成するこ
とが出来る。FIG. 1 shows an embodiment of the present invention. This sterilizing gas supply apparatus 1 is an outlet of a container valve 3 provided in a carbon dioxide gas, ethylene oxide sterilizing gas filling container (high pressure gas container) 2. The container joint 4 is connected to, and is connected to the collecting pipe 7 via the container switching valve 5 and the connection hose 6. This sterilizing gas receiving piping system can be configured by a plurality of rows provided in parallel.

【００１２】容器弁３及び容器切換弁５を開くことによ
り充填容器２の液化滅菌ガスが、該充填容器内に挿入さ
れ底部に開口が設けられた液送出管１０を通して取り出
され、集合管７からストレーナー１３を通して第一段液
減圧調整器１４に送られ、ここで滅菌ガスの液は圧力３
０ｋｇ／ｃｍ² 〜７０ｋｇ／ｃｍ² 程度の圧力から第一
段減圧出口圧力、例えば、通常１０ｋｇ／ｃｍ² 未満、
好ましくは２ｋｇ／ｃｍ² 未満に減圧される。この液化
ガスは、空氣熱交換式又は電熱加温式等による氣化器１
５に送られ、その蛇管１５ａのなかで加温されて氣化し
ガス状となり、大氣温度から温度８０℃以下の適当な温
度になって、第二段ガス減圧調整器１６に送られ、ここ
で滅菌器への送入圧力、例えば、通常２ｋｇ／ｃｍ² 未
満、好ましくは０．５ｋｇ／ｃｍ² 程度に減圧されて、
滅菌器２０に組込みの滅菌ガス送入操作弁２１から滅菌
器２０の缶体等の封入部へ、滅菌操作のサイクルに合せ
て送入、封入される。図中、２２、２２’は安全弁、２
３、２３’は安全弁元弁、２８は放出弁である。By opening the container valve 3 and the container switching valve 5, the liquefied sterilizing gas of the filling container 2 is taken out through the liquid delivery pipe 10 which is inserted into the filling container and has an opening at the bottom, and is collected from the collecting pipe 7. It is sent through the strainer 13 to the first-stage liquid decompression regulator 14, where the sterilizing gas liquid has a pressure of 3
0kg / cm ² ~70kg / cm ² about the first stage vacuum outlet pressure from the pressure, for example, usually less than 10 kg / cm ^2,
The pressure is preferably reduced to less than 2 kg / cm ² . This liquefied gas is used in the air vaporizer 1 by the air heat exchange type or the electric heating type.
5 and heated in the flexible pipe 15a to be gasified into a gas state, and the temperature is changed from the Taiki temperature to an appropriate temperature of 80 ° C. or less and sent to the second stage gas decompression regulator 16, where The delivery pressure to the sterilizer, for example, usually reduced to less than 2 kg / cm ² , preferably about 0.5 kg / cm ² ,
From the sterilizing gas feed operation valve 21 built in the sterilizer 20, the sterilizer 20 is fed into the sterilizer 20 such as a can body or the like and enclosed therein in accordance with the sterilization operation cycle. In the figure, 22 and 22 'are safety valves and 2
3 and 23 'are safety valve source valves, and 28 is a discharge valve.

【００１３】滅菌ガス送入操作弁２１が締切られるとそ
の滅圧調整弁が閉じられ、氣化器１５への新たな液化ガ
ス「液」の送入は停止されるが、その蛇管１５ａ内に封
止残留された未氣化の液化ガス「液」は当該滅圧圧力で
は氣液の平衡條件がないので全て氣化してその締切範囲
を昇圧し、昇圧の程度はフロン系滅菌ガスより遥かに大
きいので、場合によっては安全弁２２の設定圧力以上と
なってその出口等から放出され、放出ガス回収管２４お
よび回収締切弁２５、回収袋入口締切コック（弁コック
又はピンチコック）２６を経て、交換袋式放出ガス回収
装置２７内の回収ガス収容袋３０に送入され、その外形
を伸脹、膨脹させる。満杯となった回収ガス収容袋は着
脱用接手２０で着脱交換される。修理等に当っては放出
弁２８等からガスを回収することがある。When the sterilizing gas feed operation valve 21 is closed, the decompression control valve is closed, and the feeding of new liquefied gas "liquid" to the vaporizer 15 is stopped, but inside the flexible pipe 15a. The unreacted liquefied gas "liquid" that remains in the seal has no equilibrium condition for the liquid at the decompressing pressure, so all of it is depleted and the deadline range is raised, and the pressure rise is much higher than that of CFC-based sterilization gas. Since it is large, it exceeds the set pressure of the safety valve 22 and is discharged from its outlet or the like in some cases, and is exchanged via the discharged gas recovery pipe 24, recovery cutoff valve 25, and recovery bag inlet cutoff cock (valve cock or pinch cock) 26. It is fed into the collected gas storage bag 30 in the bag type released gas recovery device 27, and its outer shape is expanded and inflated. The filled collection gas storage bag is detached and replaced by the detachable joint 20. When repairing or the like, the gas may be recovered from the discharge valve 28 or the like.

【００１４】この回収装置の回収ガス収容部が、容積・
外形が固定された缶体である場合には、内部の空氣駆除
置換の問題、圧力送入と圧力保有を要する障害などの問
題があり適当ではないが、アルミラミネートその他不透
氣性合成樹脂複合フィルム製又は、不透氣性樹脂加工布
等で伸脹、縮小、折畳み自在な回収袋としておくことに
より、（イ）初期残存空氣パージ不要（ロ）大氣圧まで
放出ガス回収（ハ）回収ポンプ不要（ニ）回収状態の外
観的目視確認容易（ホ）低圧力保管（ヘ）軽量（ト）交
換容易等の利点が得られる。The recovery gas storage portion of this recovery device is
If it is a can with a fixed outer shape, it is not suitable because there are problems such as internal air disinfection replacement, obstacles that require pressure feeding and pressure holding, but aluminum laminate or other impermeable synthetic resin composite film (A) Initial residual air purge is not required (b) Emission gas recovery up to large pressure (c) Recovery pump is not required by making it as a recovery bag that can be expanded, reduced, and foldable with a cloth made of impermeable resin or the like. D) The advantages of easy visual confirmation of the collected state (e) Low pressure storage (f) Light weight (g) Easy replacement can be obtained.

【００１５】図２及び図３は交換袋式放出ガス回収装置
の１例を表すもので、この回収装置２７は、鋼管製で高
さ調整ねじ３１によって安定して自立した外枠３３を備
えている。回収ガス収容袋３０は、筒状の不透氣性合成
樹脂複合フィルムの上下を折込み熱シールして袋状に柔
軟に成形されており、下部には透明の塩化ビニル等を材
質とする回収ガス取入れチューブ３４が接着され、その
先端を着脱自在なワンタッチ・カップリング接手３５で
滅菌ガス供給装置の鋼管製放出ガス回収管２４に接続さ
れており、上記の回収ガス取入れチューブ３４の中間に
は、ピンチコック３７が開かれた状態で取付けられてい
る。またこの回収ガス収容袋３０は、上方を把み金具付
き吊線４０で外枠３３に吊り下げられており、下方はス
プリング付きの把み金具４１で固定されている。不時放
出回収ガスは回収締切弁４３を経て回収ガス収容袋３０
に送入され、該袋を膨らませる。FIGS. 2 and 3 show an example of an exchange bag type discharge gas recovery device, and this recovery device 27 is provided with an outer frame 33 which is made of steel pipe and is stably self-supported by a height adjusting screw 31. There is. The collected gas storage bag 30 is formed by bending the upper and lower sides of a tubular impermeable synthetic resin composite film and heat-sealing it to form a flexible bag. A tube 34 is adhered, and the tip of the tube 34 is connected to a steel pipe discharge gas recovery pipe 24 of a sterilizing gas supply device by a detachable one-touch coupling joint 35. A pinch is provided in the middle of the recovery gas intake tube 34. The cock 37 is attached in an opened state. Further, the collected gas storage bag 30 is hung above the outer frame 33 by a hanging wire with a gripping fitting 40, and fixed below by a gripping fitting 41 with a spring. The collected gas that has been accidentally released passes through the collection cutoff valve 43 and the collected gas storage bag 30.
And inflates the bag.

【００１６】図３は、回収袋３０の膨らんだ状態を表す
もので、中央部の断面形状が円形に近くなり、各部が膨
張すると満杯である。この満杯状態となると、回収締切
弁４３を閉じ、ピンチコック（回収袋入口締切弁）３７
を閉じ、ワンタッチ・カップリング接手３５を離脱した
のち、吊り部を外して外枠から取外し、新しい袋に取り
替える。FIG. 3 shows a state in which the recovery bag 30 is inflated. The cross-sectional shape of the central portion is close to a circular shape, and when the respective portions are inflated, they are full. In this full state, the collection shutoff valve 43 is closed and the pinch cock (collection bag inlet shutoff valve) 37
After removing the one-touch coupling joint 35, remove the hanging part, remove from the outer frame, and replace with a new bag.

【００１７】図の回収袋の寸法例は、例えばＢ＝１．５
ｍ、Ｈ＝２．２ｍであり、この袋の回収ガス容量は、約
３ｍ³ である。なお、室の入口の巾に制限があるときに
は、許容される径のものを複数設置すればよい。An example of the size of the collection bag shown in the figure is, for example, B = 1.5.
m, H = 2.2 m, and the collected gas capacity of this bag is about 3 m ³ . When the width of the entrance of the chamber is limited, a plurality of chambers having an allowable diameter may be installed.

【００１８】[0018]

【発明の効果】以上の説明から明らかなように、本発明
のガス滅菌器用滅菌ガス供給装置は、高い平衡蒸氣圧、
高い容器充填圧力の炭酸ガス混合系酸化エチレン滅菌ガ
スを低い常用圧力の配管によって実用的に効率よく條件
調整をして、氣化ガスを滅菌器に自動送出出来るほか、
その不時放出ガスを自動的に回収出来ることにより安全
性が向上される。As is apparent from the above description, the sterilizing gas supply apparatus for gas sterilizers of the present invention has a high equilibrium vapor pressure,
In addition to carbon dioxide mixed system ethylene oxide sterilization gas with a high container filling pressure, it is possible to adjust the conditions practically and efficiently by piping with a low normal pressure, and to automatically send the oxidization gas to the sterilizer.
The safety is improved by being able to automatically collect the undesired gas.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の構成の一例を示した説明図である。FIG. 1 is an explanatory diagram showing an example of the configuration of the present invention.

【図２】交換袋式放出ガス回収装置の実施例を示す外観
図である。FIG. 2 is an external view showing an embodiment of an exchange bag type released gas recovery device.

【図３】その膨らんだ状態の外観図である。FIG. 3 is an external view of the inflated state.

【符号の説明】[Explanation of symbols]

１ 滅菌ガス充填容器 ２ ガス容器 ３ 容器弁 ４ 容器接手 ５ 容器切換弁 ７ 集合管 １０ 液送出管 １４ 第一段液減圧調整器 １５ 氣化器 １６ 第二段ガス減圧調整器 ２０ 滅菌器 ２２ 一次側安全弁 ２２’ 二次側安全弁 ２８ 放出弁 ２７ 交換袋式放出ガス回収装置 ３０ 回収ガス収容袋 1 Sterilization gas filling container 2 Gas container 3 Container valve 4 Container joint 5 Container switching valve 7 Collecting pipe 10 Liquid delivery pipe 14 First stage liquid pressure reducing regulator 15 Energizer 16 Second stage gas pressure reducing regulator 20 Sterilizer 22 Primary Side safety valve 22 'Secondary side safety valve 28 Release valve 27 Exchange bag type release gas recovery device 30 Recovery gas storage bag

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 滅菌の薬効成分である酸化エチレンに稀
釈成分として炭酸ガスを混合し、液化ガス状態で充填し
た酸化エチレン滅菌ガス容器に接続される液化ガス受入
配管と、該液化ガス受入配管を通して取り出される液化
ガスを減圧する第一段液減圧調整器と、液化ガスを気化
させる液化ガス氣化器と、気化したガスを減圧する第二
段ガス減圧調整器と、減圧調整された滅菌ガスを滅菌器
に供給する接続用配管と、配管中に介装されるガス安全
弁及びガス放出弁と、当該ガス放出弁から放出される放
出ガスを回収する放出ガス回収管と、前記放出ガス回収
管の出口に接続されるガス収容型回収装置とを備え、前
記ガス収容型回収装置の回収ガス収容部を、柔軟性を有
する着脱自在な不透氣性の袋で構成したことを特徴とす
るガス滅菌器用滅菌ガス供給装置。1. A liquefied gas receiving pipe connected to an ethylene oxide sterilizing gas container filled with liquefied gas by mixing carbon dioxide gas as a diluting component with ethylene oxide, which is a sterilizing drug, and through the liquefied gas receiving pipe. The first-stage liquid decompression regulator that decompresses the liquefied gas that is taken out, the liquefied gas evaporator that vaporizes the liquefied gas, the second-stage gas decompression regulator that decompresses the vaporized gas, and the sterilized gas that has been decompressed. A connecting pipe for supplying to the sterilizer, a gas safety valve and a gas release valve interposed in the pipe, an exhaust gas recovery pipe for recovering the exhaust gas released from the gas release valve, and the exhaust gas recovery pipe A gas sterilizer, comprising: a gas storage type recovery device connected to an outlet, wherein the recovered gas storage portion of the gas storage type recovery device is formed of a flexible and detachable impermeable bag. Sterilization Gas supply device.