JPH064077B2 - Method for sterilizing and cleaning medical instruments inserted into the body - Google Patents
Method for sterilizing and cleaning medical instruments inserted into the bodyInfo
- Publication number
- JPH064077B2 JPH064077B2 JP2202680A JP20268090A JPH064077B2 JP H064077 B2 JPH064077 B2 JP H064077B2 JP 2202680 A JP2202680 A JP 2202680A JP 20268090 A JP20268090 A JP 20268090A JP H064077 B2 JPH064077 B2 JP H064077B2
- Authority
- JP
- Japan
- Prior art keywords
- cleaning
- washing
- water
- sterilization
- sterilizing
- 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
Landscapes
- Apparatus For Disinfection Or Sterilisation (AREA)
- Endoscopes (AREA)
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。Description: TECHNICAL FIELD The present invention relates to a method for sterilizing and cleaning a medical instrument contaminated by being inserted into a body such as a medical endoscope.
〔従来の技術及びその問題点〕 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。[Prior Art and Problems Thereof] In recent years, nosocomial infections in hospitals have become a serious problem. For example, the types of medical instruments inserted into the body such as endoscopes are increasing, and the frequency of use per instrument is also increasing. There is a risk of becoming an infection medium. Furthermore, the variety of antibacterial agents administered to patients and the increase in the amount of their use often create unique resistant bacteria depending on the antibacterial agent administered to each patient. There is also a problem that the transmission of resistant bacteria to other patients by incomplete sterilization is more difficult to treat than the transmission 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要があ
る。For this reason, various bactericides are used for sterilization and cleaning of these medical instruments, but since different viruses and bacteria, or their resistant bacteria, may be attached to the instruments for each patient, 1 It does not mean that different kinds of fungicides are enough. In addition, with a device having a complicated mechanism such as an endoscope, it is not enough to simply immerse the instrument in sterilized water, and it is necessary to wash it with flowing water, and since the instrument is expensive, it is quick and easy. It must be washed and prepared for the next use.
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 such circumstances, there has been a strong demand for the development of a rapid and sterilizing and cleaning method effective for all microorganisms such as bacteria and viruses in medical devices for insertion 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。An object of the present invention is to provide a method for efficiently and completely sterilizing and cleaning microorganisms such as bacteria and viruses adhered to a medical instrument for insertion into the body after use or in response to such a demand. .
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 earnest studies 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254n
m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
される。That is, according to the present invention, the medical instrument inserted into the body after use is washed with water, and a washing step of washing out microorganisms adhering to the instrument and 254n in washing water containing the microorganism obtained in the washing step.
A sterilization process of irradiating ultraviolet rays having a wavelength of m as a main wavelength,
There is provided a method for sterilizing and cleaning a medical instrument for insertion into a body, which comprises a step of circulating the cleaning water obtained in the sterilization step to the cleaning 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 described 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
に応じて配設されるオゾン水製造装置である。In FIG. 1, reference numeral 1 is a cleaning tank, 2 is an ultraviolet sterilization chamber, and 3 is an ozone water producing apparatus which is arranged 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。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、強力な攪拌流（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。The cleaning tank 1 is of a hermetically sealed type, and is for charging a medical instrument to be inserted into the body (hereinafter, also simply referred to as instrument) and thoroughly washing the instrument with washing water. This washing tank has multiple washing water jet nozzles to wash the equipment efficiently in a short time, and has a strong stirring flow (for example, jet jet).
It is preferable to have a structure that forms
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 emits ultraviolet rays 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 producing device 3 dissolves ozone produced by corona discharge, electrolysis or the like in the washing water, and a conventionally known one 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11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10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。In order to carry out the method of the present invention, the equipment to be cleaned is put in the cleaning tank 1, and the cleaning water is introduced from the water supply line 11. After introducing a predetermined amount of cleaning water, the cleaning water is circulated in the cleaning tank through line 4, ultraviolet irradiation chamber 2, line 5 and line 8 by a pump attached to the cleaning tank. When ozone is added to the circulating cleaning water, the cleaning water from the line 5 is introduced into the ozone manufacturing apparatus 3 through the line 6 by the three-way valve 9 and the valve 10, and the cleaning water containing ozone is extracted from the line 7, Try to introduce in 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。The ultraviolet irradiation device and the ozone production device can be incorporated in 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 washing 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 washing waste water is extracted, and the washed and sterilized instrument is taken out from the washing 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(D値)を示したものである。殺菌の指標とされるB.sub
tilis胞子においても、菌数が10-5となるおよその時間5
Dは、照度139μW/cm2でおよそ6分、照射519μW/cm2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, Table 1 shows basic data on the ultraviolet intensity and the sterilization rate in the present invention. That is, Table 1 shows the time (D value) in which the initial number of bacteria under the two illuminances was 1/10 in the stationary bacterium solution. B.sub which is used as an index of sterilization
Also in tilis spores, approximate time that the number of bacteria is 10-5 5
D is approximately 6 minutes at an intensity 139μW / cm 2, is approximately 2 minutes irradiation 519μW / cm 2, the time is shortened to have to name a UV dose.
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 wash water is
It can be performed at any time. For example, ozone can be added at the final stage of the UV irradiation treatment to complete the sterilization of microorganisms, and the UV irradiation treatment can be performed through the entire stage to achieve more efficient sterilization. Can also be added. In the present invention,
In order to enhance the sterilization efficiency of microorganisms and achieve complete sterilization, it is particularly preferable to use UV irradiation and ozone addition together. In this case, ozone produces a large amount of radical species having strong bactericidal activity in water by ultraviolet irradiation, and the 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。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。そして、紫外線とオゾン
を併用する時には、微生物に対してさらに強力な破壊作
用を有するラジカル種を生成する。従って、本発明で
は、その殺菌機構からわかるように、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。Generally speaking, for microbes, fungicides are limited to a particular antibacterial spectrum, and some microbes cannot kill them. On the other hand, ultraviolet rays damage the gene DNA of microorganisms, and ozone destroys cell structures centering on the destruction of cell membrane function. Then, when ultraviolet rays and ozone are used together, radical species having a stronger destructive action on microorganisms are generated. Therefore, in the present invention, as can be seen from the sterilization mechanism, it is possible to destroy and sterilize all kinds of microorganisms, and sterilization of drug-resistant bacteria, which has been difficult to completely sterilize with conventional bactericides, and inactivation of viruses. Can also be achieved.
胃内視鏡の検査後の付着菌数は絶対数として106〜108個
であるが、この内視鏡を本発明によりおよそ5の水で
循環洗浄すると、菌数は最大の値でおよそ2×104個/ml
となるので、指標菌B.subbtilis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、しかも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 adherent bacteria after examination of the gastroscope is 10 6 to 10 8 as an absolute number, but when this endoscope is circulated and washed with about 5 water according to the present invention, the number of bacteria is about the maximum value. 2 x 10 4 pieces / ml
Therefore, the above time (5D) that took 5 times the D value of the indicator bacterium B. subbtilis spores is sufficient time to sterilize them, and as a sterilization time such as 2 minutes to 6 minutes. Understand that it is fast.
〔発明の効果〕 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。 [Effects of the Invention] In the present invention, various microorganisms attached to the device are washed out from the device by cleaning in the cleaning tank, transferred to cleaning water, and the microorganisms transferred to the cleaning water are in the ultraviolet irradiation chamber. The washing water that has been sterilized by irradiating the ultraviolet rays in 1. and is sterilized is returned to the washing tank again and used for washing the equipment. By carrying out such a washing operation for a certain period of time, the microorganisms in the washing water are completely sterilized, whereby the washing of the device is 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 body-insertion medical instruments used in hospitals, for example, endoscopes (fiberscopes such as esophagus, stomach, lung, and large intestine) are efficiently and completely sterilized in a short time. Since it can be washed, its industrial significance is great.
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。 FIG. 1 shows a flow sheet of the method of the present invention. 1… Washing tank, 2… UV irradiation room, 3… Ozone production equipment.
Claims (2)
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 washing step of washing a medical instrument to be inserted into the body after use with water to wash out microorganisms adhering to the instrument, and washing water containing the microorganism obtained in the washing step having a main wavelength of 254 nm. A method for sterilizing and cleaning a medical instrument for insertion into a body, which comprises a sterilization step of irradiating ultraviolet rays and a step of circulating the cleaning water obtained in the sterilization step to the cleaning step.
加する請求項1の方法。2. The method according to claim 1, wherein ozone is added to the cleaning water circulating in the cleaning 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 JPH0489045A (en) | 1992-03-23 |
| JPH064077B2 true 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) |
Families Citing this family (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 |
| JP2531666Y2 (en) * | 1992-04-10 | 1997-04-09 | 昭永産業株式会社 | Endoscope automatic cleaning device |
| JP2012050666A (en) * | 2010-09-01 | 2012-03-15 | Sharp Corp | Medical appliance washing method and medical appliance washing device |
Family Cites Families (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
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0489045A (en) | 1992-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69929960T2 (en) | METHOD AND DEVICE FOR STERILIZING COMPONENTS | |
| US6117285A (en) | System for carrying out sterilization of equipment | |
| US20050220665A1 (en) | Low temperature sterilization and disinfections method and apparatus for medical apparatus and instruments | |
| US7323149B2 (en) | Supplemental ozone treatment for ensuring the sterility of instrument cleaning systems | |
| JP2007021496A (en) | Fluid processing method and fluid processing apparatus | |
| EP1575669B1 (en) | A laser device for treatment of infections | |
| Vizcaino-Alcaide et al. | Comparison of the disinfectant efficacy of Perasafe® and 2% glutaraldehyde in in vitro tests | |
| WO2007103617A2 (en) | Sterilizing apparatus and method | |
| JPH064077B2 (en) | Method for sterilizing and cleaning medical instruments inserted into the body | |
| EP1260234A1 (en) | Process for sterilizing fresh or industrial water used as rinsing fluid for an automated washing machine | |
| KR102070649B1 (en) | A one-day washer-disinfector used by short-time dissolving the powder typed disinfectant | |
| Frăţilă et al. | Cleaning and disinfection in gastrointestinal endoscopy: current status in Romania | |
| Muscarella | Are all sterilization processes alike? | |
| TWI284543B (en) | Method and apparatus for low temperature sterilization and disinfections | |
| US20030165401A1 (en) | Medical device disinfection | |
| GB2500866A (en) | Method for decontamination of medical instruments | |
| Ramakrishna | Safety of technology: infection control standards in endoscopy | |
| JPH04297266A (en) | Sterilizing/cleaning apparatus for medical instrument | |
| WO1997039165A1 (en) | System and method for carrying out sterilization | |
| JPH0677735B2 (en) | Prevention method of Legionella spp. | |
| CN112826974A (en) | Killing method and device of killing equipment and computer storage medium | |
| Gilling et al. | A randomised single‐blind comparison of the effectiveness of T ristel F use (chlorine dioxide) as an office‐based fluid soak, with C idex OPA (ortho‐phthaldehyde) using an automated endoscopic reprocessor (AER) as high‐level disinfection for flexible cystoscopes | |
| KR20020078528A (en) | Endoscope Disinfecting and Cleaning System | |
| JP2006095308A (en) | Low temperature disinfection sterilization method and apparatus | |
| CN106880857A (en) | A kind of surgical instrument disinfection method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |