JPH0489045A - Sterilizing/cleaning method for intra-body insertion medical apparatus - Google Patents
Sterilizing/cleaning method for intra-body insertion medical apparatusInfo
- Publication number
- JPH0489045A JPH0489045A JP2202680A JP20268090A JPH0489045A JP H0489045 A JPH0489045 A JP H0489045A JP 2202680 A JP2202680 A JP 2202680A JP 20268090 A JP20268090 A JP 20268090A JP H0489045 A JPH0489045 A JP H0489045A
- Authority
- JP
- Japan
- Prior art keywords
- cleaning
- line
- cleaning water
- ozone
- water
- 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.)
- Granted
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 49
- 230000001954 sterilising effect Effects 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000003780 insertion Methods 0.000 title abstract 3
- 230000037431 insertion Effects 0.000 title abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 19
- 244000005700 microbiome Species 0.000 claims abstract description 18
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 17
- 238000005406 washing Methods 0.000 claims abstract description 12
- 230000001678 irradiating effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000005855 radiation Effects 0.000 abstract 2
- 230000002070 germicidal effect Effects 0.000 abstract 1
- 241000894006 Bacteria Species 0.000 description 13
- 241000700605 Viruses Species 0.000 description 4
- 150000003254 radicals Chemical class 0.000 description 3
- 239000003242 anti bacterial agent Substances 0.000 description 2
- 239000000645 desinfectant Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 206010011409 Cross infection Diseases 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 210000001072 colon Anatomy 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 210000003238 esophagus Anatomy 0.000 description 1
- 230000000855 fungicidal effect Effects 0.000 description 1
- 239000000417 fungicide Substances 0.000 description 1
- 238000002575 gastroscopy Methods 0.000 description 1
- 230000002068 genetic effect Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000008223 sterile water Substances 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Apparatus For Disinfection Or Sterilisation (AREA)
- Endoscopes (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、医療用内視鏡などの身体内に挿入されるなど
により汚染された医療器具を殺菌洗浄する方法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for sterilizing and cleaning a medical instrument, such as a medical endoscope, that has been contaminated by being inserted into the body.
近年、病院における院内感染は重大な問題となってきて
いる。例えば、内視鏡などの身体内挿入医療器具の種類
は増加しているし、また１器具当りの使用頻度も増加し
ているため、これらの医療器具の殺菌が不完全であると
き、器具が感染媒体となる危険性をはらんでいる。さら
に、患者に投与される抗菌剤の種類の多様さとその使用
量の増大は患者ごとに投与された抗菌剤に応じて固有の
耐性菌を作り出している場合がしばしばあり、身体内挿
入医療器具の不完全殺菌による耐性菌の他の患者への伝
播は、非耐性菌の伝播より治療が厄介になるという問題
もある。In recent years, nosocomial infections in hospitals have become a serious problem. For example, the types of medical devices inserted into the body such as endoscopes are increasing, and the frequency of use per device is also increasing, so if these medical devices are not fully sterilized, they may There is a risk of becoming a vector of infection. Furthermore, the variety of types of antibacterial agents administered to patients and the increasing amounts used often create unique resistant bacteria depending on the antibacterial agent administered to each patient. There is also the problem that the spread of resistant bacteria to other patients due to incomplete sterilization is more difficult to treat than the spread of non-resistant bacteria.
このため、これらの医療器具の殺菌、洗浄には各種殺菌
剤が使用されているが、患者ごとに異なるウィルスや細
菌、あるいはそれらの耐性菌が器具に付着している可能
性があるので、１種類の殺菌剤でよいということにはな
らない。また、内視鏡のように複雑な機構を有している
ものでは、単に器具を殺菌水に浸漬するだけでは不十分
で、流動水を用いて洗浄する必要があるとともに、器具
が高価なので手早く洗浄して次の使用に備える必ニーｔ
カ、あう。For this reason, various sterilizers are used to sterilize and clean these medical instruments, but since there is a possibility that different viruses and bacteria or bacteria resistant to these may be attached to the instruments depending on the patient, This does not mean that one type of fungicide is sufficient. In addition, for devices with complex mechanisms such as endoscopes, it is not enough to simply immerse the instruments in sterile water; they must be cleaned using flowing water, and since the instruments are expensive, Must be cleaned and prepared for next use.
Oh, yes.
このような事情の下、身体内挿入医療器具においてあら
ゆる細菌、ウィルス等の微生物に対して有効で速やかな
殺菌洗浄方法の開発が強く要望されていた。Under these circumstances, there has been a strong demand for the development of a rapid sterilizing cleaning method that is effective against all types of microorganisms such as bacteria and viruses for medical instruments inserted into the body.
本発明は、このような要望に応え、使用後のあるいは汚
染された身体内挿入医療器具に付着した細菌、ウィルス
等の微生物を効率よく完全に殺菌洗浄する方法を提供す
ることをその課題とする。In response to such demands, it is an object of the present invention to provide a method for efficiently and completely sterilizing and cleaning microorganisms such as bacteria and viruses attached to used or contaminated medical instruments inserted into the body. .
本発明者らは、前記課題を解決すべく鋭意研究を重ねた
結果、本発明を完成するに至った。The present inventors have completed the present invention as a result of intensive research to solve the above problems.
すなわち、本発明によれば、使用後の身体内挿入医療器
具を水洗し、該器具に付着する微生物を洗出する洗浄工
程と、該洗浄工程で得られた微生物を含む洗浄水に２５
４ｎｍの波長を主波長とする紫外線を照射する殺菌工程
と、該殺菌工程で得られた洗浄水を前記洗浄工程に循環
する工程からなる身体内挿入医療器具の殺菌洗浄方法が
提供さ４、る。That is, according to the present invention, there is a cleaning step in which a medical device inserted into the body is washed with water after use to wash out microorganisms adhering to the device, and a washing water containing microorganisms obtained in the cleaning step is washed with 25 ml of water.
A method for sterilizing and cleaning a medical device inserted into the body is provided, which comprises a sterilization step of irradiating ultraviolet rays having a main wavelength of 4 nm, and a step of circulating the washing water obtained in the sterilization step to the washing step. .
次に、本発明を添付図面によりさらに詳細に説明する。Next, the present invention will be explained in more detail with reference to the accompanying drawings.
第１図において、１は洗浄槽、２は紫外線殺菌室、３は
必要に応して配設されるオゾン水製造装置である。In FIG. 1, 1 is a cleaning tank, 2 is an ultraviolet sterilization chamber, and 3 is an ozone water production device provided as necessary.
洗浄槽１は、密閉型のもので、身体内挿入医療器具（以
下、単に器具とも言う）を装入し、洗浄水により器具を
十分に洗浄するためのものである。The cleaning tank 1 is of a closed type, and is used to load an intrabody-insertable medical device (hereinafter also simply referred to as a device) and to thoroughly wash the device with cleaning water.
この洗浄槽は、器具を短時間で効率よく洗浄するために
、複数の洗浄水噴射ノズルを有し、強力な撹拌流（例え
ば、ジェット噴流）を形成する構造のものとするのがよ
い。In order to efficiently clean the instruments in a short period of time, the cleaning tank preferably has a structure that includes a plurality of cleaning water spray nozzles and forms a strong agitation flow (for example, a jet stream).
紫外線殺菌室２は、２５４ｎｍの紫外線を主波長とする
紫外線を照射する殺菌灯を内蔵する。The ultraviolet sterilization chamber 2 has a built-in sterilization lamp that irradiates ultraviolet light having a main wavelength of 254 nm.
オゾン水製造装置３は、コロナ放電や電解方式等で製造
されたオゾンを洗浄水に溶解させるもので、従来公知の
ものが使用される。The ozone water production device 3 dissolves ozone produced by corona discharge, electrolysis, or the like into cleaning water, and a conventionally known device is used.
本発明の方法を実施するには、洗浄槽１内に洗浄すべき
器具を入れるとともに、給水ライン】１から洗浄水を導
入する。洗浄水を所定量導入後、洗浄槽に付設するポン
プにより洗浄水をライン４、紫外線照射室２、ライン５
及びライン８を通って洗浄槽に循環させる。オゾンを循
環洗浄水に添加する時には、三方バルブ９及びバルブ１
０により、ライン５からの洗浄水をライン６を通ってオ
ゾン製造装置３に導入し、オゾンを含む洗浄水をライン
７から抜出し、ライン８に導入するようにする。To carry out the method of the present invention, instruments to be cleaned are placed in a cleaning tank 1, and cleaning water is introduced from the water supply line 1. After introducing a predetermined amount of cleaning water, the pump attached to the cleaning tank pumps the cleaning water to line 4, ultraviolet irradiation chamber 2, and line 5.
and circulate through line 8 to the cleaning tank. When adding ozone to circulating cleaning water, three-way valve 9 and valve 1
0, the cleaning water from line 5 is introduced into the ozone production device 3 through line 6, and the cleaning water containing ozone is extracted from line 7 and introduced into line 8.
なお、紫外線照射装置とオゾン製造装置は、同一の装置
内に組込むことができる。Note that the ultraviolet irradiation device and the ozone production device can be incorporated into the same device.
前記のようにして、一定時間洗浄操作を行った後、装置
系の運転を停止し、排水バルブ１４を開け、洗浄廃水を
抜出した後、洗浄殺菌された器具を洗浄槽１から取出す
。After performing the cleaning operation for a certain period of time as described above, the operation of the apparatus system is stopped, the drain valve 14 is opened, the cleaning waste water is drawn out, and the cleaned and sterilized instruments are taken out from the cleaning tank 1.
次に本発明における紫外線強度と殺菌速度に関する基礎
データを第１表に示す。すなわち、第１表は静止菌液に
ついて２つの照度下における菌の初期菌数が１／１０に
なる時間（ＤＩ）を示したものである。殺菌の指標とさ
れるＢ、５ｕｂｔｉｌｉｓ胞子においても、菌数が１０
−Ｓとなるおよその時間５Ｄは、照度１３９μＶ／ｃｉ
でおよそ６分、照射５１９μν／ｄでおよそ２分であり
、この時間は紫外線線量をあげればもつと短くなる。Next, basic data regarding ultraviolet intensity and sterilization rate in the present invention are shown in Table 1. That is, Table 1 shows the time (DI) at which the initial number of bacteria becomes 1/10 under two illuminance conditions for a stationary bacterial solution. Even in B.5ubtilis spores, which are considered as indicators of sterilization, the number of bacteria is 10.
-S, the approximate time 5D is when the illuminance is 139 μV/ci.
It takes approximately 6 minutes for irradiation of 519 μν/d, and approximately 2 minutes for irradiation of 519 μν/d, and this time becomes shorter as the UV dose is increased.
本発明において、循環洗浄水に対するオゾンの添加は、
任意の時期に行うことができる。例えば、微生物の殺菌
をより完全なものにするために、紫外線照射処理の最終
段階でオゾンを添加することができるし、より効率的な
殺菌処理を行うために、紫外線照射処理を段階全体を通
じてオゾンを添加することもできる。本発明において、
微生物の殺菌効率を高め、かつ完全殺菌を達成するため
には、紫外線照射とオゾン添加を同時併用するのが特に
好ましい。この場合には、オゾンは紫外照射により殺菌
力の強いラジカル種を水中に多量生成し、このラジカル
種によって微生物の殺菌が行われる。In the present invention, the addition of ozone to the circulating cleaning water is
It can be done at any time. For example, ozone can be added at the final stage of ultraviolet irradiation treatment to achieve more complete sterilization of microorganisms, and ozone can be added throughout the entire stage of ultraviolet irradiation treatment to achieve more efficient sterilization. can also be added. In the present invention,
In order to increase the sterilization efficiency of microorganisms and achieve complete sterilization, it is particularly preferable to simultaneously use ultraviolet irradiation and ozone addition. In this case, ozone generates a large amount of radical species with strong sterilizing power in water through ultraviolet irradiation, and these radical species sterilize microorganisms.
一般的に言うと、微生物に対して、殺菌剤は特定の抗菌
スペクトルに限定されるので、微生物の種類によっては
これを殺菌することができない。Generally speaking, disinfectants are limited to a specific antibacterial spectrum when it comes to microorganisms, so they cannot sterilize some types of microorganisms.
一方、紫外線は微生物の遺伝子ＤＮＡを損傷し、オゾン
は細胞膜機能の破壊を中心とする細胞構造を破壊する。On the other hand, ultraviolet rays damage the genetic DNA of microorganisms, and ozone destroys cell structures, mainly by destroying cell membrane functions.
そして、紫外線とオゾンを併用する時するラジカル種を
生成する。従って、本発明では、その殺菌機構かられか
るように、あらゆる種類の微生物を破壊殺菌することが
でき、従来の殺菌剤では完全殺菌の困難であった薬剤耐
性菌の殺菌や、ウィルスの不活性化をも達成することが
できる。Then, when ultraviolet rays and ozone are used together, radical species are generated. Therefore, the present invention can destroy and sterilize all kinds of microorganisms, as shown by its sterilization mechanism, and can sterilize drug-resistant bacteria and inactivate viruses, which were difficult to completely sterilize with conventional disinfectants. can also be achieved.
胃内視鏡の検査後の付着菌数は絶対数として１０’〜１
０′１個であるが、この内視鏡を本発明によりおよそ５
Ｑの水で循環洗浄すると、菌数は最大の値でおよそ２Ｘ
ＩＯ４個／−となるので、指標菌Ｂ、５ｕｂｂｔｉ１ｉ
ｓ胞子のＤ値の５倍をとった上記時間（５Ｄ）はこれら
を殺菌するのに十分な時間であり、しがも２分〜６分と
いうように殺菌時間として極めて速いものであることが
理解できる。The number of attached bacteria after gastroscopy is 10' to 1 as an absolute number.
However, this endoscope can be made into approximately 5 pieces by the present invention.
When circulating and cleaning with Q water, the maximum number of bacteria is approximately 2X.
Since IO4/-, indicator bacteria B, 5ubbti1i
The above time (5D), which is 5 times the D value of S spores, is sufficient time to sterilize them, and the sterilization time is extremely fast, such as 2 to 6 minutes. It can be understood.
本発明においては、器具に付着する各種の微生物は、洗
浄槽内における洗浄により器具から洗出され、洗浄水に
移行し、そして、この洗浄水に移行した微生物は紫外線
照射室での紫外線照射により殺菌され、殺菌処理された
洗浄水は再び洗浄槽に戻され、器具の洗浄に用いられる
。このような洗浄操作を一定時間行うことにより、洗浄
水中の微生物は完全に殺菌されてしまい、これによって
器具の洗浄は終了する。In the present invention, various microorganisms adhering to instruments are washed out from the instruments by washing in a cleaning tank and transferred to washing water, and microorganisms transferred to this washing water are removed by ultraviolet irradiation in an ultraviolet irradiation chamber. The sterilized and sterilized cleaning water is returned to the cleaning tank and used for cleaning instruments. By performing such a cleaning operation for a certain period of time, microorganisms in the cleaning water are completely sterilized, and the cleaning of the instrument is thus completed.
本発明によれば、病院において使用される各種の身体内
挿入医療器具、例えば、内視鏡（食道、胃、肺、大腸等
の各ファイバースコープ）等を、短時間で効率よくかつ
完全に殺菌洗浄し得るので、その産業的意義は多大であ
る。According to the present invention, various medical instruments inserted into the body used in hospitals, such as endoscopes (fiberscopes for esophagus, stomach, lungs, colon, etc.), can be efficiently and completely sterilized in a short time. Since it can be washed, it has great industrial significance.
第１図は本発明方法のフローシートを示す。
１・・・洗浄槽、２・・紫外線照射室、３・・・オゾン
製造装置。
特許出願人 工業技術院長 杉油 賢皐桑４−４呻２復
代理人 弁理 士 池 浦 敏 明FIG. 1 shows a flow sheet of the method of the invention. 1...Cleaning tank, 2...Ultraviolet irradiation room, 3...Ozone production device. Patent Applicant: Director of the Agency of Industrial Science and Technology, Kengo Kuwa 4-4, Sub-Attorney: Toshiaki Ikeura, Patent Attorney
Claims (2)
付着する微生物を洗出する洗浄工程と、該洗浄工程で得
られた微生物を含む洗浄水に２５４ｎｍの波長を主波長
とする紫外線を照射する殺菌工程と、該殺菌工程で得ら
れた洗浄水を前記洗浄工程に循環する工程からなる身体
内挿入医療器具の殺菌洗浄方法。(1) A cleaning process in which a medical device inserted into the body is washed with water after use to wash out microorganisms attached to the device, and a wavelength of 254 nm is used as the dominant wavelength in the washing water containing microorganisms obtained in the cleaning process. A method for sterilizing and cleaning medical instruments inserted into the body, comprising a sterilization step of irradiating ultraviolet rays, and a step of circulating the washing water obtained in the sterilization step to the washing step.
請求項１の方法。(2) The method according to claim 1, wherein ozone is added to the washing water circulated in the washing step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2202680A JPH064077B2 (en) | 1990-07-30 | 1990-07-30 | Method for sterilizing and cleaning medical instruments inserted into the body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2202680A JPH064077B2 (en) | 1990-07-30 | 1990-07-30 | Method for sterilizing and cleaning medical instruments inserted into the body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0489045A true JPH0489045A (en) | 1992-03-23 |
| JPH064077B2 JPH064077B2 (en) | 1994-01-19 |
Family
ID=16461376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2202680A Expired - Lifetime JPH064077B2 (en) | 1990-07-30 | 1990-07-30 | Method for sterilizing and cleaning medical instruments inserted into the body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH064077B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04297266A (en) * | 1991-03-27 | 1992-10-21 | Agency Of Ind Science & Technol | Sterilizing/cleaning apparatus for medical instrument |
| JPH0582403U (en) * | 1992-04-10 | 1993-11-09 | 昭永産業株式会社 | Endoscope automatic cleaning device |
| WO2012029906A1 (en) * | 2010-09-01 | 2012-03-08 | シャープ株式会社 | Medical device washing method and medical device washing device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5963961U (en) * | 1982-10-22 | 1984-04-27 | 東光電気株式会社 | uv lamp |
| JPS6021534A (en) * | 1983-07-15 | 1985-02-02 | Seiko Epson Corp | Circuit mounting structure |
| JPS60212141A (en) * | 1984-04-06 | 1985-10-24 | オリンパス光学工業株式会社 | Washing apparatus for endoscope |
-
1990
- 1990-07-30 JP JP2202680A patent/JPH064077B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5963961U (en) * | 1982-10-22 | 1984-04-27 | 東光電気株式会社 | uv lamp |
| JPS6021534A (en) * | 1983-07-15 | 1985-02-02 | Seiko Epson Corp | Circuit mounting structure |
| JPS60212141A (en) * | 1984-04-06 | 1985-10-24 | オリンパス光学工業株式会社 | Washing apparatus for endoscope |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04297266A (en) * | 1991-03-27 | 1992-10-21 | Agency Of Ind Science & Technol | Sterilizing/cleaning apparatus for medical instrument |
| JPH0582403U (en) * | 1992-04-10 | 1993-11-09 | 昭永産業株式会社 | Endoscope automatic cleaning device |
| WO2012029906A1 (en) * | 2010-09-01 | 2012-03-08 | シャープ株式会社 | Medical device washing method and medical device washing device |
| JP2012050666A (en) * | 2010-09-01 | 2012-03-15 | Sharp Corp | Medical appliance washing method and medical appliance washing device |
| CN102985026A (en) * | 2010-09-01 | 2013-03-20 | 夏普株式会社 | Medical device washing method and medical device washing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH064077B2 (en) | 1994-01-19 |
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