WO2012029906A1 - 医療器具洗浄方法および医療器具洗浄装置 - Google Patents

医療器具洗浄方法および医療器具洗浄装置 Download PDF

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Publication number
WO2012029906A1
WO2012029906A1 PCT/JP2011/069905 JP2011069905W WO2012029906A1 WO 2012029906 A1 WO2012029906 A1 WO 2012029906A1 JP 2011069905 W JP2011069905 W JP 2011069905W WO 2012029906 A1 WO2012029906 A1 WO 2012029906A1
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WO
WIPO (PCT)
Prior art keywords
cleaning
ozone gas
medical device
liquid
medical
Prior art date
Application number
PCT/JP2011/069905
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
弘明 山本
教和 方志
孔一 田村
孝至 南朴木
Original Assignee
シャープ株式会社
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by シャープ株式会社 filed Critical シャープ株式会社
Priority to CN2011800347007A priority Critical patent/CN102985026A/zh
Publication of WO2012029906A1 publication Critical patent/WO2012029906A1/ja

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/70—Cleaning devices specially adapted for surgical instruments
    • 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
    • A61L2/202—Ozone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
    • 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
    • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/20—Targets to be treated
    • A61L2202/24—Medical instruments, e.g. endoscopes, catheters, sharps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
    • B08B2203/005—Details of cleaning machines or methods involving the use or presence of liquid or steam the liquid being ozonated

Definitions

  • the present invention relates to a cleaning method for a medical device and a cleaning device for a medical device that can suitably carry out the method. More specifically, the present invention relates to a cleaning method that is effective for removing dirt formed of proteins and has excellent bactericidal activity. Relates to the device.
  • a pre-cleaning process is provided before the cleaning process in order to easily remove dirt adhered to the medical device.
  • This pre-cleaning step is a step of immersing the medical device in a cleaning solution containing a proteolytic enzyme and stirring the cleaning solution. According to this method, by immersing the medical device in a cleaning solution having a proteolytic enzyme in the preliminary cleaning step, dirt is easily removed in the cleaning step, and the protein remains attached to the medical device as a cleaning residue. It can be prevented.
  • Patent Document 1 the method for cleaning a medical device described in Patent Document 1 requires a large amount of detergent and cleaning water.
  • the cleaning liquid may not reach a portion with a fine structure, and there is a possibility that protein may remain in a portion where the cleaning liquid does not reach. Since the protein adheres with the passage of time, it becomes difficult to fall off even after washing.
  • the cleaning time is lengthened, the remaining cleaning is reduced, but more detergent and cleaning water are required, and the processing time itself is longer, which is inefficient.
  • the present invention has been made in view of the above-described problems, and an object of the present invention is to provide a medical instrument cleaning method and a medical instrument cleaning apparatus capable of efficiently cleaning even a fine portion of the medical instrument. .
  • the present invention is a method for cleaning a medical instrument characterized by cleaning the medical instrument by bringing ozone gas into contact with the medical instrument.
  • the medical device cleaning method according to the present invention preferably further includes a liquid cleaning step of cleaning the medical device with a cleaning liquid.
  • the medical device cleaning method according to the present invention preferably includes a step of storing the cleaning liquid used in the liquid cleaning step, and the cleaning liquid stored in the water storage step is preferably reused in the liquid cleaning step.
  • the medical device cleaning method according to the present invention preferably further includes a step of filling the water storage tank with ozone gas in the water storage step.
  • the medical device cleaning method according to the present invention preferably further includes a step of mixing ozone gas with the cleaning liquid in the water storage tank.
  • the present invention also includes a liquid cleaning process for cleaning a medical instrument with a cleaning liquid; And a ozone gas cleaning step of cleaning the medical device by bringing ozone gas into contact with the medical device cleaned in the liquid cleaning step.
  • the present invention provides an ozone gas cleaning step for cleaning the medical instrument by bringing the medical instrument into contact with ozone gas; And a liquid cleaning step of cleaning the medical device cleaned in the ozone gas cleaning step with a cleaning liquid.
  • the present invention includes an ozone gas generation unit that generates ozone gas
  • a medical instrument cleaning apparatus comprising: a cleaning unit that cleans the medical instrument using the ozone gas.
  • the medical instrument cleaning apparatus further includes a control unit that controls the concentration of the ozone gas.
  • the medical instrument cleaning apparatus further includes a gas processing unit that performs processing to exhaust the ozone gas.
  • the present invention it is possible to realize a medical device cleaning method and a medical device cleaning device that can efficiently and surely clean the details of the medical device and contribute to infection prevention.
  • FIG. 1 is a front view of a medical instrument cleaning apparatus 1 according to the present embodiment.
  • the medical instrument cleaning apparatus 1 is provided in an intake port 11 for taking in air for generating ozone gas, a cleaning tank door 12 into which a medical instrument to be cleaned is placed, and a cleaning tank door 12.
  • FIG. 2 is a schematic sectional view of the medical instrument cleaning apparatus 1 as viewed from the side.
  • the medical instrument cleaning apparatus 1 further includes an ozone generation unit 16, a cleaning tank 17, a gas processing unit 19, a fan 21, a heater 22, and a water storage tank 23.
  • the ozone generation unit 16 generates ozone gas using the air taken from the intake port 11.
  • the ozone generation unit 16 corresponds to an ozone gas generation unit.
  • oxygen may be taken directly from an oxygen cylinder or the like.
  • As a method for generating ozone gas various methods such as a silent discharge method, an electrolysis method, a photoreaction method, a high-frequency electrolysis method, and a solid polymer electrolysis method can be used.
  • the ozone generation unit 16 is provided with a concentration meter (not shown) that controls the concentration of ozone gas, and controls the ozone gas concentration to be appropriate for processing.
  • the cleaning tank 17 is a unit for storing medical instruments to be cleaned.
  • the cleaning tank 17 corresponds to a cleaning unit.
  • the washing tank 17 has an inner wall with a concave or convex shape, like a general dishwasher, so that it can be easily washed even with small shapes such as forceps and scissors used for medical treatment. A structure using a basket or the like may be used.
  • the cleaning tank 17 is connected to the ozone generation unit 16, and ozone gas generated from the ozone generation unit 16 is sent to the cleaning tank 17, and the medical instrument is cleaned.
  • the cleaning tank 17 is provided with a concentration meter (not shown) for controlling the concentration of ozone gas and a temperature controller (not shown) for controlling the temperature.
  • the densitometer corresponds to the control unit.
  • the cleaning tank 17 is connected to a water supply port 18 that supplies water used for liquid cleaning.
  • the gas treatment unit 19 treats ozone gas used for cleaning the medical instrument to a concentration that is harmless to the human body and exhausts it from the exhaust port 20.
  • the gas processing unit 19 corresponds to a gas processing unit.
  • the gas processing unit 19 is also provided with a densitometer (not shown), and is controlled so that ozone gas having a concentration harmful to the human body is not discharged to the outside.
  • the fan 21 is provided adjacent to the cleaning tank 17 and dries the medical device after the liquid cleaning by blowing air from the fan 21.
  • the heater 22 warms the air blown by the fan 21 to warm air to efficiently dry the medical instrument.
  • the water storage tank 23 is temporarily stored in order to reuse the cleaning liquid used in the liquid cleaning process.
  • the cleaning liquid is stored in the water storage tank 23 and used for the next cleaning.
  • the water storage tank 23 is connected to the cleaning tank 17 and the ozone generation unit 16, and the ozone gas used in the cleaning tank 17 or the ozone gas generated in the ozone generation unit 16 is filled into the water storage tank 23, or the cleaning liquid is filled with ozone gas.
  • bacteria such as bacteria are prevented from breeding in the cleaning liquid stored in the water storage tank 23.
  • the cleaning liquid that is no longer needed after cleaning and rinsing is drained from the drain port 24.
  • FIG. 3 shows an example of the cleaning process of the medical device according to the present invention.
  • the used medical instrument is input from the cleaning tank door 12 of the medical instrument cleaning apparatus 1 to the internal cleaning tank 17.
  • washing is performed with a liquid in which medical detergent, alkaline detergent or the like is dissolved.
  • the detergent may be manually added together with the medical instrument to be input in the input process 30.
  • the detergent is preliminarily stored in the medical instrument cleaning apparatus 1 and automatically cleaned during liquid cleaning.
  • a detergent may be introduced.
  • the detergent is dissolved in the water supplied from the water supply port 18, and the cleaning nozzle (not shown) is applied to the medical device for cleaning.
  • a method of immersing a medical device in a liquid obtained by dissolving a detergent in water supplied from the water supply port 18 and stirring and washing the solution may be used.
  • the cleaning liquid is preferably warm water.
  • the cleaning liquid used in the liquid cleaning step 31 may be reused.
  • the used cleaning liquid is temporarily stored in the water storage tank 23 for reuse and used for the next cleaning.
  • the cleaning liquid stored in the water storage tank 23 is sent to the cleaning tank 17 using a pump (not shown) and used in the liquid cleaning step 31. Since ozone gas has a sterilizing action, it is preferable to fill the space of the water storage tank 23 with ozone gas or to prevent the growth of bacteria such as bacteria through ozone gas in the cleaning liquid.
  • the dirty cleaning water that has been reused several times is drained at the drain port 24.
  • the emptied water storage tank is washed with tap water or ozone water and then filled with ozone gas to keep bacteria from growing until the next use.
  • the cleaning liquid adhering to the medical device cleaned in the liquid cleaning step 31 is washed away.
  • the rinse water is preferably warm water.
  • the water used for rinsing is drained from the drain port 24.
  • the process proceeds to the drying step 33.
  • the medical instrument is dried by the air sent by the fan 21.
  • the wind sent by the fan 21 causes water droplets on the surface of the medical device to be blown off or evaporated to accelerate drying.
  • the medical device can be dried in a shorter time by installing the heater 22 in the vicinity of the fan 21 and making the air to be blown warm.
  • the drying process 33 is not indispensable, when ozone gas is applied to the surface of the medical instrument in the ozone gas cleaning process 34, which is the next process, if excessive water droplets are attached, the ozone gas may not sufficiently hit the medical instrument. Therefore, it is desirable to include the step of the drying step 33.
  • the medical instrument is cleaned.
  • the cleaning tank 17 containing the dried medical instrument is filled with the ozone gas generated by the ozone generation unit 16, and the medical instrument is brought into contact with the ozone gas.
  • the cleaning liquid is a liquid, so the molecules are large, the cleaning liquid does not reach the details, Leftovers may occur.
  • Ozone gas which is a gas
  • Ozone gas penetrates into intricate details of medical devices that did not reach with liquid, and the remaining washing in liquid cleaning is cleaned by the cleaning power of ozone gas Can do.
  • Ozone gas is a gas having self-degradability, and in an environment of extremely high temperature and high humidity, it is more self-decomposed and the gas concentration is lowered, and the protein degradation effect is lowered.
  • protein degradation by ozone gas originates from a chemical reaction due to the strong oxidizing action of ozone gas, so it is possible to activate this ozone gas and promote the reaction by raising the temperature in the cleaning tank to room temperature or higher. is there. For this reason, more effective cleaning is possible by controlling the temperature in the tank to an appropriate temperature and maintaining the balance between the above-mentioned conflicting self-decomposition and reaction promotion.
  • the concentration of ozone gas is desirably 5 to 9 Vol%, and may be adjusted as appropriate depending on the degree of contamination. Further, the time for contacting the ozone gas with the medical device is preferably 5 to 20 minutes, but may be appropriately adjusted depending on the degree of contamination.
  • the ozone gas used in the ozone gas cleaning step 34 is processed by the gas processing unit 19 to a concentration (0.2 ppm or less) that does not affect the human body, and is exhausted to the outside through the exhaust port 20.
  • the ozone gas used in the ozone gas cleaning step 34 may be used for cleaning and sterilizing the water storage tank 23 described above. The cleaned medical instrument is taken out from the cleaning tank door 12 of the medical instrument cleaning apparatus 1 in step 35.
  • FIG. 4 shows the measurement results of the residual protein in each sample.
  • the vertical axis in FIG. 4 indicates the amount of residual protein.
  • the sample contacted with ozone gas for 5 minutes has a residual protein of 10 ⁇ g or less, and if washed for 30 minutes only, the residual protein is 10-20 ⁇ g. Although it was 90 ⁇ g in many cases, there was a large variation of about 10 ⁇ g in small quantities.
  • the sample that was contacted with ozone gas after 5 minutes cleaning had no variation and the residual protein was less than 10 ⁇ g in all samples.
  • ozone gas in combination with cleaning liquid, reliable cleaning can be expected.
  • ozone gas alone is considered effective for cleaning. From the above measurement results, it was confirmed that proteins such as blood adhering to a medical instrument can be effectively removed in a short time by washing with ozone gas contact.
  • ozone gas which is a gas
  • ozone gas penetrates into complicated intricate details of the medical device, and it was possible to clean the unwashed details that could not be removed by liquid cleaning.
  • ozone gas cleaning is performed after liquid cleaning.
  • the contact time of ozone gas can be shortened.
  • a method may be used in which ozone gas cleaning is performed first and liquid cleaning is performed later. When ozone gas cleaning is performed first, the molecular weight of the protein is reduced, and the time for liquid cleaning can be shortened.
  • the present invention can be implemented in various other forms without departing from the spirit or main features thereof.
PCT/JP2011/069905 2010-09-01 2011-09-01 医療器具洗浄方法および医療器具洗浄装置 WO2012029906A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011800347007A CN102985026A (zh) 2010-09-01 2011-09-01 医疗器具清洗方法及医疗器具清洗装置

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JP2010195418A JP2012050666A (ja) 2010-09-01 2010-09-01 医療器具洗浄方法および医療器具洗浄装置
JP2010-195418 2010-09-01

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WO2012029906A1 true WO2012029906A1 (ja) 2012-03-08

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CN (1) CN102985026A (zh)
TW (1) TW201212956A (zh)
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102877074A (zh) * 2012-09-26 2013-01-16 淮安市天达医疗器械有限公司 医疗刀片的清洁方法及清洗剂和漂洗剂

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016064017A (ja) * 2014-09-25 2016-04-28 三洋テクノソリューションズ鳥取株式会社 卓上滅菌器および卓上滅菌器用の貯水タンク
JP2016064018A (ja) * 2014-09-25 2016-04-28 三洋テクノソリューションズ鳥取株式会社 卓上滅菌器
CN105214984B (zh) * 2015-09-29 2018-02-02 芜湖宏景电子股份有限公司 汽车音响pcb板消毒除尘装置

Citations (5)

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JPH0197432A (ja) * 1987-10-08 1989-04-14 Olympus Optical Co Ltd 内視鏡用洗浄消毒装置
JPH03111026A (ja) * 1989-09-26 1991-05-10 Olympus Optical Co Ltd 内視鏡洗浄消毒装置
JPH03221196A (ja) * 1990-01-29 1991-09-30 Japan Steel Works Ltd:The オゾン水製造装置
JPH0489045A (ja) * 1990-07-30 1992-03-23 Agency Of Ind Science & Technol 身体内挿入医療器具の殺菌洗浄方法
JPH11105834A (ja) * 1997-09-30 1999-04-20 Ishikawajima Harima Heavy Ind Co Ltd オゾン洗浄滅菌装置およびその洗浄滅菌方法

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JP2002512086A (ja) * 1998-04-17 2002-04-23 ブステッド，トミー 部材殺菌用装置と方法
CN1220522C (zh) * 2002-10-14 2005-09-28 王安国 一种器械的消毒灭菌方法及其清洗消毒灭菌设备
WO2004098655A1 (en) * 2003-04-18 2004-11-18 Langford Ic Systems, Inc. Supplemental ozone treatment methods for difficult cleaning and sterilizing applications
JP4503426B2 (ja) * 2004-11-30 2010-07-14 野村マイクロ・サイエンス株式会社 洗浄装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0197432A (ja) * 1987-10-08 1989-04-14 Olympus Optical Co Ltd 内視鏡用洗浄消毒装置
JPH03111026A (ja) * 1989-09-26 1991-05-10 Olympus Optical Co Ltd 内視鏡洗浄消毒装置
JPH03221196A (ja) * 1990-01-29 1991-09-30 Japan Steel Works Ltd:The オゾン水製造装置
JPH0489045A (ja) * 1990-07-30 1992-03-23 Agency Of Ind Science & Technol 身体内挿入医療器具の殺菌洗浄方法
JPH11105834A (ja) * 1997-09-30 1999-04-20 Ishikawajima Harima Heavy Ind Co Ltd オゾン洗浄滅菌装置およびその洗浄滅菌方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102877074A (zh) * 2012-09-26 2013-01-16 淮安市天达医疗器械有限公司 医疗刀片的清洁方法及清洗剂和漂洗剂

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JP2012050666A (ja) 2012-03-15
CN102985026A (zh) 2013-03-20

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