JPH0528774B2 - - Google Patents
Info
- Publication number
- JPH0528774B2 JPH0528774B2 JP20657785A JP20657785A JPH0528774B2 JP H0528774 B2 JPH0528774 B2 JP H0528774B2 JP 20657785 A JP20657785 A JP 20657785A JP 20657785 A JP20657785 A JP 20657785A JP H0528774 B2 JPH0528774 B2 JP H0528774B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- container
- gas
- sterilization
- sterilization container
- 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 - Lifetime
Links
- 230000001954 sterilising effect Effects 0.000 claims description 91
- 238000004659 sterilization and disinfection Methods 0.000 claims description 81
- 238000000034 method Methods 0.000 claims description 10
- 238000012360 testing method Methods 0.000 claims description 8
- 238000007689 inspection Methods 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000006200 vaporizer Substances 0.000 description 2
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
- A61L2/20—Gaseous substances, e.g. vapours
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Examining Or Testing Airtightness (AREA)
Description
【発明の詳細な説明】
ａ 発明の目的
（産業上の利用分野）
この発明に係るガス滅菌器の漏洩検査方法は、
医療器具、実験器具等を滅菌処理するために病
院、研究所等に設置されるガス滅菌器の漏洩の有
無を迅速に検知し、外部に漏洩する滅菌ガスの量
を極小に抑えるものである。[Detailed description of the invention] a. Purpose of the invention (industrial application field) The leakage testing method for a gas sterilizer according to this invention is as follows:
This system quickly detects leaks in gas sterilizers installed in hospitals, research institutes, etc. to sterilize medical instruments, laboratory instruments, etc., and minimizes the amount of sterilization gas leaking outside.
（従来の技術）
病院や研究所等に於いて使用した医療器具、実
験器具等は使用後は滅菌処理を行なつて、付着し
た細菌による感染を防止しなければならない。(Prior Art) Medical instruments, laboratory instruments, etc. used in hospitals, research institutes, etc. must be sterilized after use to prevent infection by attached bacteria.
このため、従来から滅菌容器内に高温高圧の水
蒸気を送り込んでこの滅菌容器内に収納された被
滅菌物の滅菌処理を行なう蒸気滅菌器や、滅菌容
器内に水蒸気の代りに酸化エチレンやホルマリン
のような滅菌性ガスを送り込むガス滅菌器が使用
されている。このうちのガス滅菌器は、被滅菌物
が熱に弱かつたり、或はこれに付着している細菌
が耐熱性菌であるような場合に使用される。 For this reason, conventional steam sterilizers pump high-temperature, high-pressure water vapor into a sterilization container to sterilize objects stored in the sterilization container, and steam sterilizers that use ethylene oxide or formalin instead of steam in the sterilization container have been used. Gas sterilizers are used to supply sterilizing gas. Among these, gas sterilizers are used when the object to be sterilized is sensitive to heat, or when the bacteria attached to it are heat-resistant bacteria.
第４図はこのような場合に使用されるガス滅菌
器を示す略図であるが、まずこのガス滅菌器の構
成と作用とについて簡単に説明する。開閉自在な
気密蓋１を設けた滅菌容器２には、途中に気化器
３と開閉弁４とを設けたガス供給管５の一端が接
続されており、このガス供給管５の他端はガスボ
ンベ６に接続されている。又、この滅菌容器２に
は、一端に除菌フイルタ７を、途中に開閉弁８を
それぞれ設けた吸気管９の他端と、途中に開閉弁
１０と真空ポンプ１１とを設けた排気管１２の端
部とが、それぞれ接続されている。 FIG. 4 is a schematic diagram showing a gas sterilizer used in such a case. First, the structure and operation of this gas sterilizer will be briefly explained. A sterilization container 2 equipped with an airtight lid 1 that can be opened and closed is connected to one end of a gas supply pipe 5 having a vaporizer 3 and an on-off valve 4 in the middle, and the other end of this gas supply pipe 5 is connected to a gas cylinder. 6. The sterilization container 2 also has a sterilization filter 7 at one end, an intake pipe 9 at the other end with an on-off valve 8 in the middle, and an exhaust pipe 12 in which an on-off valve 10 and a vacuum pump 11 are provided in the middle. are connected to the respective ends.
このように構成されるガス滅菌器を用いて滅菌
作業を行なう場合、気密蓋１を開いて滅菌容器２
内に被滅菌物を入れてから気密蓋１を閉じた後、
開閉弁４，８を閉じ、開閉弁１０を開いた状態で
真空ポンプ１１を運転し、滅菌容器２内を真空に
して、被滅菌物の内部にまで滅菌ガスが浸透し易
くする。滅菌容器２内を一定時間真空状態に保持
したならば、開閉弁８，１０を閉じた状態で開閉
弁４を開き、滅菌容器２内に滅菌ガスを導入す
る。滅菌ガスは、滅菌容器２内の圧力が第５図に
実線ａで示すように陽圧になるまで供給した後開
閉弁４を閉じて、この滅菌容器２内の圧力を所定
時間一定に保持する。所定時間の滅菌が終了した
ならば、開閉弁４を閉じた状態のまま開閉弁８，
１０を開放し、真空ポンプ１１を運転して、滅菌
容器２内の滅菌ガスを排出し、代りにこの滅菌容
器２内に無菌空気を送り込む。真空ポンプ１１の
運転を所定時間継続して行なうこにより、滅菌容
器２内の滅菌ガスは無菌空気と置換され、被滅菌
物に付着した滅菌ガスも除去されるため、真空ポ
ンプ１１の運転を停止し、気密蓋１を開いて滅菌
容器２内の被滅菌物を取り出す。 When performing sterilization work using a gas sterilizer configured in this way, open the airtight lid 1 and open the sterilization container 2.
After putting the object to be sterilized inside and closing the airtight lid 1,
The on-off valves 4 and 8 are closed, and the vacuum pump 11 is operated with the on-off valve 10 opened to create a vacuum inside the sterilization container 2, making it easier for the sterilization gas to penetrate into the object to be sterilized. After the inside of the sterilization container 2 is maintained in a vacuum state for a certain period of time, the on-off valve 4 is opened with the on-off valves 8 and 10 closed, and sterilization gas is introduced into the sterilization container 2. Sterilization gas is supplied until the pressure inside the sterilization container 2 becomes positive as shown by the solid line a in FIG. 5, and then the on-off valve 4 is closed to maintain the pressure inside the sterilization container 2 constant for a predetermined time. . After the sterilization for a predetermined period of time has been completed, the on-off valve 8, while keeping the on-off valve 4 closed, is closed.
10 is opened and the vacuum pump 11 is operated to exhaust the sterilizing gas in the sterilizing container 2 and supplying sterile air into the sterilizing container 2 instead. By continuing to operate the vacuum pump 11 for a predetermined period of time, the sterilization gas in the sterilization container 2 is replaced with sterile air, and the sterilization gas adhering to the objects to be sterilized is also removed, so the operation of the vacuum pump 11 is stopped. Then, the airtight lid 1 is opened and the object to be sterilized in the sterilization container 2 is taken out.
ガス滅菌装置は上述にように構成され使用され
るが、滅菌作業中に滅菌容器内の滅菌ガスが漏洩
し、ガス滅菌器を設置した室内に充満した場合、
この室内で作業している人間の健康を害すること
になつてしまう。 The gas sterilizer is configured and used as described above, but if the sterilization gas inside the sterilization container leaks during sterilization work and fills the room where the gas sterilizer is installed,
This will endanger the health of people working in this room.
このため、従来から種々の方法によつて滅菌容
器２の漏洩の有無を検査していた。第５図は従来
の漏洩検査方法の第１例を示すもので、この方法
に於いては、滅菌容器２内を真空にした場合、漏
洩があるとこの滅菌容器２内の圧力が同図に鎖線
ｂで示すように徐々に上昇することを利用して漏
洩の有無を検査する。又、第６図に示した第２例
に於いては、滅菌容器２内が滅菌ガスにより陽圧
になつている場合、漏洩があるとこの滅菌容器２
内の圧力が同図に鎖線ｃで示すように徐々に下降
することを利用して漏洩の有無を検査するように
している。 For this reason, the presence or absence of leakage of the sterilized container 2 has been tested conventionally by various methods. FIG. 5 shows the first example of the conventional leakage testing method. In this method, when the inside of the sterilization container 2 is evacuated, if there is a leak, the pressure inside the sterilization container 2 will rise to the level shown in the figure. The presence or absence of leakage is inspected by utilizing the gradual rise as shown by the chain line b. In the second example shown in FIG. 6, when the inside of the sterilization container 2 is under positive pressure due to the sterilization gas, if there is a leak, the sterilization container 2
The presence or absence of leakage is tested by utilizing the fact that the internal pressure gradually decreases as shown by the chain line c in the figure.
（発明が解決しようとする問題点）
ところが、上述のようにして滅菌容器２の漏洩
の有無を検査する場合、次に述べるような不都合
を生じる。(Problems to be Solved by the Invention) However, when inspecting the sterile container 2 for leakage as described above, the following inconvenience occurs.
即ち、滅菌容器２に設けた気密蓋１が外開き式
の場合、この滅菌容器２内を真空にすると、気密
蓋１は大気圧によつて滅菌容器２に向けて押し付
けられる。このため、気密蓋の締付が不良であつ
ても滅菌容器２内に大気が進入することはなく、
この滅菌容器２内の圧力が第５図に鎖線ｂで示す
ような変化をすることはないが、この滅菌容器２
内が滅菌ガス供給により陽圧になると、この滅菌
ガスが外部に漏出してしまう。 That is, when the airtight lid 1 provided on the sterilization container 2 is of an outward-opening type, when the inside of the sterilization container 2 is evacuated, the airtight lid 1 is pressed toward the sterilization container 2 by atmospheric pressure. Therefore, even if the airtight lid is improperly tightened, the atmosphere will not enter into the sterilization container 2.
Although the pressure inside this sterilization container 2 does not change as shown by the chain line b in FIG.
When the inside becomes positive pressure due to the supply of sterilizing gas, this sterilizing gas leaks to the outside.
第６図に示したように、滅菌容器２内が陽圧の
場合に漏洩の有無を検査すればこのような問題は
無いが、代りに漏洩があつた場合は、この漏洩を
検出するまでの間に、相当多量の滅菌ガスが外部
に漏出してしまうことになる。 As shown in Fig. 6, this problem will not occur if the presence or absence of leakage is inspected when the inside of the sterilization container 2 is under positive pressure. During this time, a considerable amount of sterilization gas will leak outside.
本発明のガス滅菌器の漏洩検査方法は、上述の
ような不都合をいずれも解消するものである。 The leak testing method for a gas sterilizer of the present invention eliminates all of the above-mentioned inconveniences.
ｂ 発明の構成
本発明のガス滅菌器の漏洩検査方法により漏洩
を検査するガス滅菌器は、被滅菌物を収納した滅
菌容器内の空気を真空ポンプにより排出して上記
滅菌容器内を陰圧にした後、この滅菌容器内に滅
菌ガスを一定量ずつ供給して滅菌容器内を大気圧
を経て更に陽圧にし、前記被滅菌物を滅菌処理す
るように作用する。b. Structure of the Invention A gas sterilizer that tests for leaks using the leak testing method for a gas sterilizer of the present invention uses a vacuum pump to exhaust the air in a sterilization container containing objects to be sterilized, thereby creating a negative pressure in the sterilization container. After that, a constant amount of sterilization gas is supplied into the sterilization container to bring the inside of the sterilization container to atmospheric pressure and further to positive pressure, thereby acting to sterilize the object to be sterilized.
本発明に於いてはこのように作用するガス滅菌
器からの滅菌ガスの漏洩の有無を検査するのに、
大気圧に達する直前に於ける滅菌容器内の圧力上
昇速度と、大気圧に達した直後に於ける滅菌器内
の圧力上昇速度とを比較し、大気圧に達する直前
直後に於ける滅菌容器内の圧力上昇速度に差が生
じた場合に、漏洩ありと判断する。 In the present invention, in order to check for leakage of sterilizing gas from a gas sterilizer that operates in this way,
Compare the rate of pressure rise in the sterilizer just before reaching atmospheric pressure with the rate of rise in pressure in the sterilizer just after reaching atmospheric pressure, and compare the rate of pressure rise in the sterilizer just before reaching atmospheric pressure. If there is a difference in the rate of pressure rise, it is determined that there is a leak.
このように大気圧に達する直前直後に於ける滅
菌容器内の圧力上昇速度の差の有無によつて滅菌
容器の漏洩の有無を判断するのは次の理由によ
る。 The reason why the presence or absence of leakage in the sterilization container is determined based on the presence or absence of a difference in the rate of pressure rise within the sterilization container immediately before and after reaching atmospheric pressure is as follows.
即ち、滅菌容器に漏洩があつた場合、この滅菌
容器内の圧力が陰圧の場合は、大気の流入により
滅菌容器内の圧力上昇速度が滅菌ガスの送り込み
に伴う本来の圧力上昇速度よりも早くなるのに対
して、滅菌容器内の圧力が陽圧の場合は、滅菌ガ
スの大気中への流出によりこの滅菌容器内の圧力
上昇速度が本来の圧力上昇速度よりも遅くなるた
め、漏洩量が少ない場合でも圧力上昇速度の差が
大きくなり、漏洩の検出を容易に行なえるためで
ある。 In other words, if there is a leak in the sterilization container and the pressure inside the sterilization container is negative, the rate of pressure rise inside the sterilization container due to the inflow of air will be faster than the original rate of pressure rise due to the supply of sterilization gas. On the other hand, if the pressure inside the sterilization container is positive, the rate of pressure increase inside the sterilization container will be slower than the original pressure increase rate due to the sterilization gas leaking into the atmosphere, so the amount of leakage will be reduced. This is because even if the pressure rise rate is small, the difference in pressure rise speed becomes large, and leakage can be easily detected.
例えば第２図に示すように、滅菌容器２内の圧
力が−ｐ（陰圧）から大気圧（０気圧）になるま
での時間をt1、大気圧から＋ｐ（陽圧）にまで上
昇する時間をt2とすると、漏洩が無い場合はt1＝
t2となるが、漏洩があるとt1＜t2となる。 For example, as shown in FIG. 2, the time it takes for the pressure inside the sterilization container 2 to go from -p (negative pressure) to atmospheric pressure (0 atm) is t 1 , and the pressure increases from atmospheric pressure to +p (positive pressure). Letting time be t 2 , if there is no leakage, t 1 =
t 2 , but if there is a leak, t 1 < t 2 .
更に本発明のガス滅菌器の漏洩検査方法に於い
ては必要に応じ、滅菌容器内の圧力が大気圧に達
する直前直後に於ける圧力上昇速度が等しい場合
でも滅菌容器内の圧力が大気圧以上になつた場合
に、この滅菌容器内の圧力上昇速度を小間隔毎に
測定記録し、この圧力上昇速度が直前に測定記録
した圧力上昇速度よりも遅くなつた場合に、漏洩
ありと判断するようにする。 Furthermore, in the leakage inspection method for a gas sterilizer of the present invention, if necessary, even if the pressure rise rate is the same before and after the pressure inside the sterilization container reaches atmospheric pressure, the pressure inside the sterilization container is equal to or higher than atmospheric pressure. , the rate of pressure increase in this sterile container is measured and recorded at small intervals, and if this rate of pressure increase becomes slower than the rate of pressure increase that was measured and recorded immediately before, it is determined that there is a leak. Make it.
このように滅菌容器内の圧力が陽圧になつた後
も漏洩の有無を検査するのは次のような理由によ
る。 The reason for inspecting for leakage even after the pressure inside the sterilization container reaches positive pressure is as follows.
即ち、漏洩が気密蓋の締付不良以外の原因で発
生したり、或は気密蓋が内開き式の場合は前述し
た大気圧前後の圧力上昇速度変化により完全に漏
洩検出を行なえるが、滅菌容器の気密蓋が外開き
式の場合、気密蓋の締付け不良に伴う漏洩は前述
したように滅菌容器内の圧力が陰圧の場合には発
生せずに上記圧力が陽圧になつてから始めて発生
する。このような締付け不良に伴う漏洩が滅菌容
器内の圧力が大気圧を越えた直後から発生すれ
ば、大気圧前後に於ける滅菌容器内の圧力上昇速
度を比較するだけでも漏洩を検出できるが、この
ような原因による漏洩は滅菌容器内が陽圧となつ
た直後から発生するとは限らない。即ち、滅菌容
器内が陰圧の場合、滅菌容器の気密蓋はこの滅菌
容器に向けて大気圧により強く押し付けられるた
め、両者の間の気密を保持するためのパツキング
も強く圧縮されて、気密を保持すべき面に密着す
る。このようにパツキングが気密を保持すべき面
に強い力で密着させられた場合、滅菌容器内が陽
圧になつてもその圧力が小さい場合は漏洩が生じ
ることがなく、滅菌容器内の圧力が一定以上にな
つて、パツキングが気密を保持すべき面から剥離
してから滅菌容器内の滅菌ガス外部に漏出するよ
うになる。この場合は、滅菌容器内の圧力の上昇
速度は、第３図に鎖線ｅで示すように、滅菌容器
内が陽圧になつた後で途中から遅くなるため、小
間隔毎に圧力上昇速度を測定して、この速度が途
中から低下した場合に漏洩ありと判断するのであ
る。 In other words, if the leak occurs due to a cause other than improper tightening of the airtight lid, or if the airtight lid opens inward, the leakage can be completely detected by the change in the rate of pressure rise around atmospheric pressure as described above. If the airtight lid of the container opens outward, leakage due to improper tightening of the airtight lid will not occur if the pressure inside the sterilization container is negative, but only after the pressure becomes positive. Occur. If a leak due to such poor tightening occurs immediately after the pressure inside the sterilization container exceeds atmospheric pressure, the leak can be detected simply by comparing the rate of pressure rise inside the sterilization container before and after atmospheric pressure. Leakage due to such causes does not necessarily occur immediately after positive pressure is established inside the sterilization container. In other words, when the inside of the sterilization container is under negative pressure, the airtight lid of the sterilization container is strongly pressed against the sterilization container by the atmospheric pressure, and the packing used to maintain the airtightness between the two is also strongly compressed, preventing the airtightness. Closely adheres to the surface to be held. In this way, if the packing is brought into close contact with the surface that must be airtight with strong force, even if the inside of the sterilized container becomes positive pressure, if the pressure is small, no leakage will occur, and the pressure inside the sterilized container will be reduced. When the temperature exceeds a certain level, the packing peels off from the surface that is supposed to maintain airtightness, and then the sterilization gas inside the sterilization container leaks to the outside. In this case, as shown by the chain line e in Figure 3, the rate of increase in pressure inside the sterilization container slows down after the inside of the sterilization container reaches positive pressure, so the rate of increase in pressure within the sterilization container is increased at small intervals. It is determined that there is a leak if this speed drops midway through the measurement.
尚、滅菌容器内の圧力上昇速度を測定する場
合、一定時間当りの圧力変化を求めても、或は一
定圧力差だけ上昇するのに要する時間を求めても
良いが、大気圧直前直後に於ける圧力上昇速度の
差の有無を判断する場合は、一定圧力差だけ上昇
するのに要する時間を求める方が便利である。 When measuring the rate of pressure rise in a sterilized container, you can measure the pressure change over a certain period of time, or the time required for the pressure to rise by a certain pressure difference. When determining whether there is a difference in the rate of pressure rise between two pressures, it is more convenient to determine the time required for the pressure to rise by a certain pressure difference.
このような本発明のガス滅菌器の漏洩検査方法
は、第１図に示すように、滅菌容器２内の圧力を
測定する圧力センサ１３からの信号と、クロツク
パルス発生器等の時計素子１４からの信号とをマ
イクロコンピユータ１５で比較することで容易に
実施できる。このマイクロコンピユータ１５は、
漏洩ありと判断した場合には、ガス供給管５の途
中の開閉弁４を閉じるとともに、警報器１６に信
号を送り、漏洩がある旨の警報を出す。 As shown in FIG. 1, the leakage testing method for a gas sterilizer of the present invention uses a signal from a pressure sensor 13 that measures the pressure inside the sterilization container 2, and a signal from a clock element 14 such as a clock pulse generator. This can be easily carried out by comparing the signals with the microcomputer 15. This microcomputer 15 is
If it is determined that there is a leak, the on-off valve 4 in the middle of the gas supply pipe 5 is closed, and a signal is sent to the alarm 16 to issue an alarm to the effect that there is a leak.
ｃ 発明の効果
本発明のガス滅菌器の漏洩検査方法は以上に述
べた通り構成され作用するので、どのような状況
に於いても、外部に多量の滅菌ガスを漏出させる
ことなく漏洩の検出をすることができ、ガス滅菌
器の運転を安全に行なえる。c. Effects of the Invention The method for detecting leakage in a gas sterilizer of the present invention is structured and operates as described above, so that under any circumstances, leakage can be detected without leaking a large amount of sterilizing gas to the outside. The gas sterilizer can be operated safely.
第１図は本発明の漏洩検査方法を実施するため
のガス滅菌器の略図、第２〜３図は本発明により
漏洩を検査する場合に利用する滅菌容器内の圧力
変化を示す線図、第４図はガス滅菌器の基本構成
を示す略図、第５〜６図は従来方法により漏洩を
検査する場合に利用する滅菌容器内の圧力変化を
示す線図である。
１：気密蓋、２：滅菌容器、３：気化器、４：
開閉弁、５：ガス供給管、６：ガスボンベ、７：
除菌フイルタ、８：開閉弁、９：吸気管、１０：
開閉弁、１１：真空ポンプ、１２：排気管、１
３：圧力センサ、１４：時計素子、１５：マイク
ロコンピユータ、１６：警報器。
Fig. 1 is a schematic diagram of a gas sterilizer for carrying out the leakage testing method of the present invention, Figs. FIG. 4 is a schematic diagram showing the basic configuration of a gas sterilizer, and FIGS. 5 and 6 are diagrams showing pressure changes inside a sterilization container used when inspecting for leakage by a conventional method. 1: Airtight lid, 2: Sterile container, 3: Vaporizer, 4:
On-off valve, 5: Gas supply pipe, 6: Gas cylinder, 7:
Sterilization filter, 8: Open/close valve, 9: Intake pipe, 10:
Opening/closing valve, 11: Vacuum pump, 12: Exhaust pipe, 1
3: Pressure sensor, 14: Clock element, 15: Microcomputer, 16: Alarm.
Claims (1)
ポンプにより排出して上記滅菌容器内を陰圧にし
た後、この滅菌容器内に滅菌ガスを一定量ずつ供
給して滅菌容器内を大気圧を経て更に陽圧にし、
前記被滅菌物を滅菌処理するガス滅菌器からの滅
菌ガスの漏洩の有無を検査する方法であつて、大
気圧に達する直前に於ける滅菌容器内の圧力上昇
速度と、大気圧に達した直後に於ける滅菌器内の
圧力上昇速度とを比較し、大気圧に達する直前直
後に於ける滅菌容器内の圧力上昇速度に差が生じ
た場合に、漏洩ありと判断するガス滅菌器の漏洩
検査方法。 ２ 被滅菌物を収納した滅菌容器内の空気を真空
ポンプにより排出して上記滅菌容器内を陰圧にし
た後、この滅菌容器内に滅菌ガスを一定量ずつ供
給して滅菌容器内を大気圧を経て更に陽圧にし、
前記被滅菌物を滅菌処理するガス滅菌器からの滅
菌ガスの漏洩の有無を検査する方法であつて、大
気圧に達する直前に於ける滅菌容器内の圧力上昇
速度と、大気圧に達した直後に於ける滅菌器内の
圧力上昇速度とを比較し、大気圧に達する直前直
後に於ける滅菌容器内の圧力上昇速度に差が生じ
た場合に、漏洩ありと判断し、上記圧力上昇速度
に差がない場合は、更に滅菌容器内の圧力が大気
圧以上になつた場合に、この滅菌容器内の圧力上
昇速度を小間隔毎に測定記録し、この圧力上昇速
度が直前に測定記録した圧力上昇速度よりも遅く
なつた場合に、漏洩ありと判断するガス滅菌器の
漏洩検査方法。[Claims] 1. After the air in the sterilization container containing the object to be sterilized is exhausted by a vacuum pump to create a negative pressure in the sterilization container, a fixed amount of sterilization gas is supplied into the sterilization container. The inside of the sterilized container is brought to atmospheric pressure and then to positive pressure,
A method for inspecting the presence or absence of leakage of sterilizing gas from a gas sterilizer that sterilizes objects to be sterilized, the method comprising: measuring the rate of pressure increase in the sterilization container immediately before reaching atmospheric pressure; and immediately after reaching atmospheric pressure. A leak test for gas sterilizers that determines that there is a leak if there is a difference in the pressure rise rate in the sterilizer container just before and after reaching atmospheric pressure. Method. 2 After the air inside the sterilization container containing the object to be sterilized is exhausted using a vacuum pump to create a negative pressure inside the sterilization container, a fixed amount of sterilization gas is supplied into the sterilization container to bring the inside of the sterilization container to atmospheric pressure. After further applying positive pressure,
A method for inspecting the presence or absence of leakage of sterilizing gas from a gas sterilizer that sterilizes objects to be sterilized, the method comprising: measuring the rate of pressure increase in the sterilization container immediately before reaching atmospheric pressure; and immediately after reaching atmospheric pressure. If there is a difference in the rate of pressure rise in the sterilizer container immediately before and after reaching atmospheric pressure, it is determined that there is a leak, and the rate of pressure rise is If there is no difference, and the pressure inside the sterilized container rises above atmospheric pressure, measure and record the rate of pressure rise in the sterilized container at small intervals, and determine whether this rate of pressure rise is the pressure measured and recorded immediately before. A leak inspection method for gas sterilizers that determines that there is a leak when the rate of rise is slower than the rising speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20657785A JPS6267418A (en) | 1985-09-20 | 1985-09-20 | Method for inspecting leakage of gas sterilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20657785A JPS6267418A (en) | 1985-09-20 | 1985-09-20 | Method for inspecting leakage of gas sterilizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6267418A JPS6267418A (en) | 1987-03-27 |
| JPH0528774B2 true JPH0528774B2 (en) | 1993-04-27 |
Family
ID=16525703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20657785A Granted JPS6267418A (en) | 1985-09-20 | 1985-09-20 | Method for inspecting leakage of gas sterilizer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6267418A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2335741B1 (en) * | 2008-08-20 | 2013-12-25 | Panasonic Healthcare Co., Ltd. | Isolator with sterilisation means and controller |
| JP5341428B2 (en) * | 2008-08-20 | 2013-11-13 | パナソニックヘルスケア株式会社 | Isolator |
| JP5243163B2 (en) * | 2008-09-22 | 2013-07-24 | パナソニックヘルスケア株式会社 | Isolator |
| CN105593660A (en) * | 2013-10-02 | 2016-05-18 | 豪夫迈·罗氏有限公司 | Apparatus for leak detection |
| CN113267302B (en) * | 2021-07-08 | 2022-08-26 | 宁波奉化昌宁医疗器械有限公司 | Sealing tester of sterilization box and testing method thereof |
-
1985
- 1985-09-20 JP JP20657785A patent/JPS6267418A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6267418A (en) | 1987-03-27 |
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