WO2015046532A1 - 内視鏡レンズクリーナー - Google Patents
内視鏡レンズクリーナー Download PDFInfo
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- WO2015046532A1 WO2015046532A1 PCT/JP2014/075950 JP2014075950W WO2015046532A1 WO 2015046532 A1 WO2015046532 A1 WO 2015046532A1 JP 2014075950 W JP2014075950 W JP 2014075950W WO 2015046532 A1 WO2015046532 A1 WO 2015046532A1
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- Prior art keywords
- endoscope
- cleaning
- cleaning agent
- antifouling
- agent
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/12—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with cooling or rinsing arrangements
- A61B1/126—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with cooling or rinsing arrangements provided with means for cleaning in-use
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
- A61B1/00089—Hoods
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
- A61B1/00091—Nozzles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/012—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor
- A61B1/018—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor for receiving instruments
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/74—Carboxylates or sulfonates esters of polyoxyalkylene glycols
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/825—Mixtures of compounds all of which are non-ionic
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/26—Organic compounds containing oxygen
- C11D7/265—Carboxylic acids or salts thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/00234—Surgical instruments, devices or methods for minimally invasive surgery
- A61B2017/00238—Type of minimally invasive operation
- A61B2017/00269—Type of minimally invasive operation endoscopic mucosal resection EMR
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/667—Neutral esters, e.g. sorbitan esters
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/10—Objects to be cleaned
- C11D2111/14—Hard surfaces
- C11D2111/20—Industrial or commercial equipment, e.g. reactors, tubes or engines
Definitions
- the present invention relates to various medical endoscopes such as the laryngeal endoscope, bronchoscope, upper gastrointestinal endoscope, lower gastrointestinal endoscope, duodenal endoscope, small intestine endoscope, large intestine endoscope, Capsule endoscope, thoracoscope, laparoscope, cystoscope, cholangioscope, arthroscope, spinal endoscope, angioscope, subdural endoscope, magnifying endoscope, ultrasonic endoscope, side
- the present invention relates to a cleaning agent that can clean an endoscope, a perspective mirror, and the like, and in particular, can clean an endoscope in vivo during treatment.
- the present invention also relates to an antifouling agent useful for antifouling treatment of such an endoscope in advance.
- Patent Document 1 discloses an endoscope cleaning agent using a nonionic surfactant and an enzyme
- Patent Document 2 includes a nonionic polymer, a nonionic surfactant, and ethylenediaminetetraacetic acid.
- a cleaning composition for medical devices comprising monoethanolamine.
- the cleaning ability of these cleaning agents is not sufficient to remove lens stains.
- an endoscope mounting hood may be used for the purpose of securing the field of view of the endoscope screen.
- the endoscope mounting hood is a cap attached to the distal end portion of the endoscope, and has been attracting attention as a necessary item when carrying out the magnifying endoscopic observation and the endoscopic treatment that have been widespread in recent years.
- the endoscope mounting hood is also contaminated with blood, body fluid, gastric fluid, saliva, cell debris, or dirt including fat at the time of excision of the affected part. There was a problem that became unclear. Therefore, it has also been desired to develop a cleaning agent for an endoscope mounting hood that has a high cleaning ability and is excellent in safety when used in a living body.
- the present invention aims to reduce the burden on doctors and patients in diagnosis and treatment using an endoscope, and provides a cleaning agent used in vivo during an operation using an endoscope.
- the task is to do.
- this invention makes it a subject to provide the said cleaning agent with the high washing
- the present invention provides an antifouling agent useful for antifouling treatment of an endoscope and / or an endoscope-related instrument, for example, an endoscope lens and / or an endoscope mounting hood. Is also an issue.
- a cleaning agent manufactured using a cleaning component that is highly safe for a living body is used for an endoscope lens and / or an endoscope. It has a high cleaning effect against the mounting hood dirt, and the components of such a cleaning agent are surprisingly excellent in the antifouling ability of the endoscope lens and / or the mounting hood for the endoscope, It was discovered that it can also be used as an antifouling agent, and further studies have been made to complete the present invention.
- the present invention relates to the following.
- the endoscope and / or the endoscope can be used in vivo by the cleaning agent (or using the cleaning agent) during the operation using the endoscope (or during the operation using the endoscope).
- Method for cleaning an endoscope-related instrument (particularly an endoscope lens and / or an endoscope mounting hood) [or cleaning an endoscope and / or an endoscope-related instrument (particularly an endoscope lens and / or Or a method of removing dirt (for example, blood, body fluid, gastric fluid, saliva, cell debris, fat, etc.) adhering to the endoscope mounting hood].
- the present invention also includes an antifouling agent for antifouling treatment of an endoscope and / or an endoscope-related instrument (particularly, an endoscope lens and / or an endoscope mounting hood). That is, unlike the cleaning agent, such an antifouling agent adheres to an endoscope or an endoscope-related instrument (in particular, an endoscope lens and / or an endoscope mounting hood) in advance in vitro. And an agent (component) for suppressing or preventing adherence of dirt in the living body during treatment using an endoscope (or during treatment using an endoscope).
- the component of the antifouling agent may be the same component as the cleaning agent.
- the antifouling agent comprises a nonionic surfactant (i) having an HLB in the range of 1 to 11 and a nonionic surfactant (ii) having an HLB in the range of 11 to 20. May be included.
- the antifouling agent may further contain an antifouling aid (for example, a component similar to a cleaning aid such as sodium bicarbonate).
- a method of antifouling treatment of an endoscope and / or an endoscope-related instrument with the antifouling agent [or antifouling treatment During an operation using an endoscope (or during an operation using an endoscope), an endoscope and / or an endoscope-related instrument (particularly an endoscope lens and / or an endoscope mounting hood) )
- Method for suppressing or preventing adherence of dirt for example, blood, body fluid, gastric juice, saliva, cell debris, fat, etc.
- Such a method may be combined with the cleaning method.
- an endoscope and / or an endoscope-related instrument (in particular, an endoscope lens and / or an endoscope mounting hood) is treated with the antifouling agent, Endoscopes and / or endoscope-related instruments (particularly endoscope lenses and / or endoscope mounting hoods) in vivo during surgery using an endoscope (or during surgery using an endoscope) In-vivo with respect to the endoscope and / or an endoscope-related instrument (in particular, an endoscope lens and / or an endoscope mounting hood) during the operation using the endoscope. May be a method of removing dirt while suppressing the adhesion of dirt.
- the operation using an endoscope is not particularly limited.
- endoscopic mucosal resection (EMR) or internal Endoscopic submucosal dissection (ESD) may be used.
- EMR endoscopic mucosal resection
- ESD internal Endoscopic submucosal dissection
- the present invention may be suitably used particularly in ESD.
- the cleaning agent of the present invention it is possible to provide a cleaning agent that is excellent in safety in use in a living body and that is used in a living body during a treatment using an endoscope.
- the cleaning agent of the present invention has a high cleaning ability for dirt (especially, endoscope lens and / or endoscope hood dirt) of an endoscope and / or an endoscope-related instrument, and the endoscope lens. Can be given an anti-fogging effect.
- an endoscope and / or an endoscope-related instrument prior to a treatment using an endoscope, an endoscope and / or an endoscope-related instrument (particularly, an endoscope lens and / or an endoscope mounting hood) is provided in vitro.
- an antifouling agent useful for antifouling treatment can be provided with an antifouling agent useful for antifouling treatment.
- Such an antifouling agent is excellent in antifouling ability, and can prevent or prevent the adhesion of dirt to the endoscope lens and the endoscope mounting hood in advance.
- ADVANTAGE OF THE INVENTION According to this invention, the doctor's and patient's burden in the treatment using an endoscope can be reduced significantly.
- FIG. 1 is a schematic view of a distal end portion (lens portion) of an endoscope.
- FIG. 2 is a schematic view of the endoscope distal end in a state where the endoscope mounting hood is mounted.
- FIG. 3 shows the results of Test Example 3 (oil film washability using an endoscope lens).
- FIG. 4 shows the results of Test Example 4 (oil film detergency using an endoscope mounting hood).
- FIG. 5 shows the results of Test Example 5 (antifogging property).
- FIG. 6 is an endoscopic photograph that serves as an index for evaluating dirt attached to the endoscope lens after peeling of the submucosa.
- FIG. 7 is an endoscopic photograph that serves as an index for evaluating the degree of fat in the submucosa adipose tissue.
- the present invention relates to a cleaning agent used in a living body at the time of treatment using an endoscope.
- treatment using an endoscope includes diagnosis, treatment and prevention performed using an endoscope.
- the cleaning agent of the present invention may contain a cleaning component so that it is highly safe for living bodies and has a sufficient cleaning ability for endoscope lens and / or endoscope mounting hood dirt.
- cleaning component is not specifically limited, You may contain a well-known various washing
- the cleaning component can also be used as an antifouling component as described later.
- the cleaning agent of the present invention may contain a surfactant or may not contain a surfactant.
- the cleaning agent of the present invention may contain one or more of a cleaning aid (hereinafter also referred to as a builder), a preservative, a solubilizer or an emulsifier, a viscosity modifier, an antioxidant and the like, if desired.
- a cleaning aid hereinafter also referred to as a builder
- the builder is not particularly limited, and either an inorganic builder or an organic builder may be used.
- the inorganic builder include alkali metal and alkaline earth metal carbonates, sulfates, hydrochlorides, phosphates, borates, and boric acids. More specifically, for example, sodium hydroxide, sodium sulfate, magnesium sulfate, sodium chloride, magnesium chloride, carbonate (such as sodium carbonate), bicarbonate (such as sodium bicarbonate), phosphate (sodium phosphate, Sodium monohydrogen phosphate, sodium dihydrogen phosphate, dipotassium phosphate, potassium dihydrogen phosphate), sodium tripolyphosphate, sodium pyrophosphate, potassium pyrophosphate, sodium hexametaphosphate, borax, boric acid, magnesium carbonate, Examples include calcium carbonate and calcium sulfate. Among these, sodium hydrogen carbonate, sodium phosphate, sodium monohydrogen phosphate, potassium dihydrogen phosphate, and the like are preferable from the viewpoint of improving the cleaning effect.
- organic builder examples include carboxylic acids having 2 to 10 carbon atoms, hydroxycarboxylic acids, polycarboxylic acids or hydroxypolycarboxylic acids or salts thereof, aminocarboxylic acids, polyaminocarboxylic acids or salts thereof, and the like. It is done.
- organic acids such as citric acid, malic acid, succinic acid, maleic acid, fumaric acid, gluconic acid, adipic acid, and salts thereof
- aminopolycarboxylic acids such as ethylenediaminetetraacetic acid and nitrilotriacetic acid
- acids and salts thereof include acids and salts thereof, and sugars such as glucose, sucrose, fructose, and lactose, and urea.
- these builders described above can be used alone or in combination of two or more.
- the builder described above may play a role as a pH adjuster in addition to the role as a cleaning aid.
- the builder (cleaning aid) can also be used as an antifouling component (or antifouling aid), as will be described later.
- the amount of the builder added is not particularly limited. For example, it may be less than 3% by mass with respect to the total mass of the cleaning agent, and is preferably 0.01 from the viewpoint of sufficiently achieving the desired effect.
- the content is from mass% to 0.6 mass%, more preferably from 0.05 mass% to 0.3 mass%.
- the preservative is not particularly limited, and examples thereof include benzoic acid and salts thereof, salicylic acid and salts thereof, sorbic acid and salts thereof, dehydroacetic acid and salts thereof, paraoxybenzoic acid alkyl esters (methylparaben, ethylparaben, propylparaben, Butyl paraben, etc.) and other paraoxybenzoic acid esters, 2,4,4′-trichloro-2′-hydroxydiphenyl ether, 3,3,4′-trichlorocarbanilide, hexachlorophene, benzalkonium chloride, phenoxyethanol, Polyhydric alcohols such as hinokitiol, resorcin, ethanol, 1,3-butylene glycol, isopropylmethylphenol, 1,3-butylene glycol, 1,2-pentanediol, 1,2-hexanediol, 1,2-octanediol Le, and the like.
- the solubilizer or emulsifier is not particularly limited, and examples thereof include dimethyl isosorbide, transcutol, ethyl alcohol, isopropyl alcohol, polyethylene glycol, propylene glycol, castor oil, isopropyl myristate, octyldodecanol, Isocetyl alcohol, oleyl alcohol, oleyl cetyl alcohol, triglycerides of vegetable fatty acids of medium chain length, eg MiglyolsR, caprylic acid and capric acid triglyceride, which is a mixture of caprylic acid triglyceride and capric acid triglyceride, propylene glycol dicaprylate and dicaprate
- the viscosity modifier is not particularly limited, and examples thereof include cetyl alcohol, stearyl alcohol, cetestearyl alcohol, myristyl alcohol, xanthan gum, magnesium aluminum silicate-like bee gum, carbomer, glyceryl stearate, hydrogenated castor oil, cetyl palmitate, stearin Acids; combinations of synthetic and semi-synthetic waxes; combinations of glyceryl stearate, stearyl alcohol, cetyl palmitate and cocoglyceride blends; or combinations of glyceryl hydroxystearate, cetyl palmitate and trihydroxystearin blends, etc. . You may use these individually or in combination of 2 or more types.
- the antioxidant used in the present invention is not particularly limited.
- ascorbic acid or a phosphoric acid ester derivative of ascorbic acid or a salt thereof stearic acid ester, tocopherol or a derivative thereof, butylhydroxytoluene (BHT) Butylhydroxyanisole (BHA), hydroxytyrosol, parahydroxyanisole, propyl gallate, sesamol, sesamorin, gossypol and the like.
- the solvent used for the production of the cleaning agent of the present invention is not particularly limited.
- examples include glycerin, concentrated glycerin or lower alcohols having 1 to 6 carbon atoms such as acetone and methyl ethyl ketone, ether alcohols, glycols or ketones.
- water normal water, purified water, sterilized purified water, sterilized water, or the like may be used. Among these, it is preferable to use water, especially purified water, sterilized purified water, and sterilized water from the viewpoint of safety to the living body.
- the pH of the cleaning agent of the present invention is not particularly limited.
- the pH may be usually 3 to 12, and preferably 4 to 10, more preferably pH 6 to 9, from the viewpoint of improving the safety to the living body and the cleaning effect. It is.
- the viscosity of the cleaning agent of the present invention is not particularly limited, but may be, for example, usually 1 mPa ⁇ s to 500 mPa ⁇ s, and preferably 1 mPa ⁇ s to 200 mPa ⁇ s from the viewpoint of clinical convenience.
- One aspect of the present invention relates to the cleaning agent containing a surfactant as a cleaning component.
- a surfactant used for this invention will not be specifically limited if the effect of this invention is exhibited, For example, you may mix and use the nonionic surfactant from which HLB differs.
- HLB Hydrophilicity-Lipophile Balance
- HLB Hydrophilicity-Lipophile Balance
- HLB is an index representing the hydrophilicity of a nonionic surfactant.
- HLB is ⁇ (molecular weight of hydrophilic group portion / molecular weight of surfactant) ⁇ 100/5 ⁇ , or [ ⁇ hydrophilic group weight / (hydrophobic group weight + hydrophilic group weight) ⁇ ⁇ 100/5], or ⁇ (hydrophilic group % By weight) ⁇ 1/5 ⁇ .
- the value of HLB is 0 to 20, and the closer the value is to 20, the higher the hydrophilicity.
- the detergent comprises a nonionic surfactant (i) having an HLB in the range of 1 to 11, and an HLB of 11 to 20 (eg, 12 to 19, preferably 13 to 18).
- a nonionic surfactant (ii) in the range is not limited to 1 to 11, and an HLB of 11 to 20 (eg, 12 to 19, preferably 13 to 18).
- the nonionic surfactant (i) is not particularly limited, and examples thereof include the following: (Note that the numbers in parentheses ⁇ > indicate HLB values) Monoglyceride ⁇ 2.8-3 .5>, sorbitan caprylic acid monoester ⁇ 9.6>, sorbitan lauric acid monoester ⁇ 8.6>, sorbitan palmitic acid monoester ⁇ 6.7>, sorbitan stearic acid monoester ⁇ 4.7>, sorbitan olein Acid monoester ⁇ 4.3>, sorbitan oleic acid triester ⁇ 1.8>, sorbitan oleic acid triester EO 20 mol adduct ⁇ 11.0>, sorbitan oleic acid monoester EO 5 mol adduct ⁇ 10.0>, Sorbitan stearic acid monoester EO 4 mol adduct ⁇ 9.6>, polysorbate 65 ⁇ 10.5>, poly Tylene glycol (200
- the nonionic surfactant (ii) is not particularly limited, and examples thereof include the following: sorbitan lauric acid monoester EO 4 mol adduct ⁇ 13.3>, sorbitan lauric acid monoester EO20 Mole adduct ⁇ 16.7>, sorbitan palmitic acid monoester EO 20 mol adduct ⁇ 15.6>, sorbitan stearic acid monoester EO 20 mol adduct ⁇ 14.9>, sorbitan oleic acid monoester EO20 adduct ⁇ 15.
- decaglycerin caprylic acid monoester ⁇ 16.0>, decaglycerin lauric acid monoester ⁇ 14.8>, hexaglycerin oleic acid monoester ⁇ 11.6>, deca Glycerin lauric acid monoester ⁇ 15.6>, decaglycerin myristic acid monoester ⁇ 14.6>, sucrose stearate ⁇ 15-16>, sucrose palmitate ⁇ 15-16>, sucrose myristic ester ⁇ 16>, sucrose oleate ⁇ 15>, sucrose laurate ⁇ about 16> and the like are preferable.
- the EO represents ethylene oxide.
- the content of the nonionic surfactant is usually 0.1% by mass to 40% by mass, preferably 1% by mass to 35% by mass with respect to the total weight of the cleaning agent. More preferably, it is 3% by mass or more and 30% by mass or less, particularly 5% by mass or more (for example, 5 to 40% by mass, preferably 6 to 35% by mass, more preferably 7 to 30% by mass). If it is this range, the washing
- the content of the surfactant may be appropriately selected depending on the combination of surfactants to be used.
- the content ratio (i) :( ii) of the nonionic surfactants (i) and (ii) is usually 2: 1 to 1:10 by mass ratio,
- the ratio is preferably 1: 1 to 1: 9, more preferably 1: 2 to 1: 7.
- the mixed HLB value of the nonionic surfactants (i) and (ii) is usually 11.1 to 16.0, preferably 13.0 to 15 .5, more preferably 13.6 to 15.3. By setting it as this range, a cleaning agent with a high cleaning effect can be obtained.
- the nonionic surfactants (i) and (ii) have a mixed HLB value in the range of 13.6 to 15.3, and the nonionic surfactants (i) and (ii) And the total content of the nonionic surfactants (i) and (ii) is 3% by mass or more and 30% by mass with respect to the total amount of the cleaning agent. It is particularly preferred that
- the nonionic surfactant (i) is at least one selected from the group consisting of diglycerin caprylic acid monoester, tetraglycerin oleic acid monoester, and tetraglycerin lauric acid monoester.
- the nonionic surfactant (ii) comprises decaglycerin caprylic acid monoester, decaglycerin lauric acid monoester, hexaglycerin oleic acid monoester, decaglycerin lauric acid monoester, decaglycerin myristic acid monoester. It is preferably at least one selected from the group.
- the cleaning agent of the present invention containing a surfactant as a cleaning component may optionally contain a builder, a preservative, a solubilizer or an emulsifier, a viscosity modifier, an antioxidant, an antifoaming agent, and the like.
- the builder, preservative, solubilizer or emulsifier, viscosity modifier and antioxidant may be the same as described above.
- the viscosity and pH of the solvent used and the cleaning agent may be the same as described above.
- the ratio of the cleaning aid is about 0.01 to 100 parts by mass (for example, 0.03 to 50 parts by mass) with respect to 100 parts by mass of the surfactant. It can be selected from the range, and it may be preferably 0.05 to 30 parts by mass, more preferably 0.1 to 20 parts by mass, particularly 0.5 to 20 parts by mass (for example, 1 to 10 parts by mass).
- the antifoaming agent is not particularly limited, and examples thereof include alcohols (eg, methanol, ethanol, 1-propanol, 2-propanol, lauryl alcohol and stearyl alcohol) and silicone compounds (eg, dimethyl silicone, fluorosilicone). And polyether silicone). Among these, dimethyl silicone is preferable from the viewpoint of the defoaming effect and safety to the living body.
- alcohols eg, methanol, ethanol, 1-propanol, 2-propanol, lauryl alcohol and stearyl alcohol
- silicone compounds eg, dimethyl silicone, fluorosilicone
- polyether silicone e.g, dimethyl silicone is preferable from the viewpoint of the defoaming effect and safety to the living body.
- the cleaning agent of the present invention is not particularly limited.
- the cleaning component include alkali metal and alkaline earth metal carbonates, sulfates, hydrochlorides, phosphates, borates, and boric acids.
- an organic compound such as carboxylic acid having 2 to 10 carbon atoms, hydroxycarboxylic acid, polycarboxylic acid or hydroxypolycarboxylic acid or salt thereof, aminocarboxylic acid, polyaminocarboxylic acid or salt thereof, and the like. Good.
- sodium sulfate, magnesium sulfate, sodium chloride, magnesium chloride, sodium carbonate, sodium hydrogencarbonate, sodium phosphate, monohydrogen phosphate examples thereof include sodium, sodium dihydrogen phosphate, sodium tripolyphosphate, sodium pyrophosphate, potassium pyrophosphate, sodium hexametaphosphate, borax, boric acid, magnesium carbonate, calcium carbonate, calcium sulfate and the like.
- the organic compound used as the cleaning component is not particularly limited. Specifically, for example, a carboxylic acid having 2 to 10 carbon atoms, a hydroxycarboxylic acid, a polycarboxylic acid, a hydroxypolycarboxylic acid or a salt thereof, amino Carboxylic acid, polyaminocarboxylic acid or a salt thereof may be mentioned.
- organic acids such as citric acid, malic acid, succinic acid, maleic acid, fumaric acid, gluconic acid, adipic acid, and salts thereof
- aminopolycarboxylic acids such as ethylenediaminetetraacetic acid and nitrilotriacetic acid
- acids and salts thereof include acids and salts thereof, and sugars such as glucose, sucrose, fructose, and lactose, and urea.
- the cleaning components may be used alone or in combination of two or more. From the viewpoint of improving the cleaning effect, two or more kinds are preferably used in combination. Although it does not specifically limit as a combination of a washing
- the content of the cleaning component is not particularly limited, and may be 0.01% by mass to 10% by mass with respect to the total amount of the cleaning agent of the present invention, for example.
- the mixing ratio is not particularly limited as long as the cleaning effect is sufficiently exhibited.
- the mass ratio is 1: 1 to 1: It may be 5.
- the cleaning component preferably also acts as a buffer.
- the detergent of the present invention containing no surfactant may further use an alkali as desired in order to adjust pH, such as sodium hydroxide, potassium hydroxide, lithium hydroxide, sodium carbonate, Potassium carbonate, ammonium carbonate, and the like, and combinations thereof can be used.
- an alkali such as sodium hydroxide, potassium hydroxide, lithium hydroxide, sodium carbonate, Potassium carbonate, ammonium carbonate, and the like, and combinations thereof can be used.
- the detergent of the present invention that does not contain the surfactant may contain a builder, a preservative, a solubilizer or emulsifier, a viscosity modifier, an antioxidant, and the like, if desired.
- the builder, preservative, solubilizer or emulsifier, viscosity modifier and antioxidant may be the same as described above.
- the viscosity and pH of the solvent used and the cleaning agent may be the same as described above.
- the detergent of the present invention that does not contain the surfactant preferably suppresses foaming during washing even if it does not contain an antifoaming agent.
- the cleaning agent of the present invention is an endoscope and / or an endoscope-related instrument (particularly, an endoscope lens and / or an endoscope mounting hood) in a living body at the time of a treatment using an endoscope. It can be suitably used to remove dirt.
- the method of feeding the cleaning agent for removing the endoscope lens dirt is not particularly limited.
- the endoscope air feeding / water feeding nozzle hereinafter simply referred to as “water feeding nozzle”, 5 in FIG. 1). Liquid may be fed from a forceps channel (3 in FIG. 1), a water jet nozzle (4 in FIG. 1), or the like, and may be appropriately selected according to the purpose.
- the endoscope mounting hood is not particularly limited.
- the endoscope mounting hood may be attached to the endoscope in the form of a schematic diagram shown in FIG.
- the shape and the like may be appropriately selected as desired.
- Specific examples of the endoscope mounting hood include, for example, various types of slit & hole types made by Top Co., Ltd., Elastic Touch (registered trademark), various types of straight types, and top type molding caps (registered trademark). ) And other foods.
- a preferable method for removing dirt on the endoscope lens and dirt on the endoscope mounting hood is, for example, from a forceps channel to a spray nozzle or the like. And removing the dirt by spraying the cleaning agent on the endoscope mounting hood.
- a spray nozzle Specifically, the spray nozzle etc. of the fine jet (trademark) by Top Co., Ltd. etc. are mentioned, for example.
- a cleaning agent is injected through the forceps channel, and the cleaning agent is held in the endoscope mounting hood (that is, the endoscope lens is cleaned).
- a stirring rod or the like may be taken out from the forceps channel to stir the cleaning agent stored in the hood.
- the cleaning agent of the present invention gives an antifogging effect to the endoscope lens and / or the endoscope mounting hood after removing dirt from the endoscope lens and / or the endoscope mounting hood. You can also
- the cleaning agent of the present invention it is possible to remove the endoscope lens and / or endoscope mounting hood dirt without pulling the endoscope out of the body during the operation, so that the operation can proceed. Can be greatly reduced.
- the cleaning agent (or a component thereof) of the present invention is used to prevent an endoscope and / or an endoscope-related instrument (or an endoscope mounting device), particularly an endoscope lens and / or an endoscope mounting hood. It can also be used as a soiling agent (surface treatment agent, antifouling treatment agent, surface protection agent).
- an antifouling treatment is performed in advance on the endoscope lens and / or endoscope hood, etc., using the cleaning agent (or a component thereof) as an antifouling agent [for example, , Applying (attaching)] to the endoscope lens and / or the endoscope mounting hood during the operation using the endoscope (or during the operation using the endoscope).
- an antifouling agent for example, , Applying (attaching)
- the antifouling agent of the present invention can also be used as an antifogging agent (antifouling / antifogging agent).
- the same components as in the cleaning agent can be used, and the content ratio thereof is the same as described above.
- a surfactant can be suitably used.
- the antifouling agent includes, as an antifouling component, the surfactant, for example, a nonionic surfactant (i) having an HLB in the range of 1 to 11, and an HLB of 11 to 20 (eg, 12 to 19).
- a surfactant combined with a nonionic surfactant (ii), preferably in the range of 13 to 18) may be included.
- the content of such a nonionic surfactant is usually 0.1% by mass to 40% by mass, preferably 1% by mass to 35% by mass, and more preferably 3% by mass with respect to the total weight of the antifouling agent. % To 30% by mass, especially 5% by mass or more (for example, 5 to 40% by mass, preferably 6 to 35% by mass, more preferably 7 to 30% by mass).
- the content ratio (i) :( ii) of the nonionic surfactants (i) and (ii) is usually 2: 1 to 1:10, preferably 1: 1 to 1: 9 by mass ratio. More preferably, it may be 1: 2 to 1: 7.
- the mixed HLB value of the nonionic surfactants (i) and (ii) is usually 11.1 to 16.0, preferably 13.0 to 15.5, more preferably 13.6 to 15.3. It may be.
- the mixed HLB value of the nonionic surfactants (i) and (ii) is in the range of 13.6 to 15.3, and the content ratio of the nonionic surfactants (i) and (ii) is 1. : The range of 2 to 1: 7, and the total content of the nonionic surfactants (i) and (ii) is 3% by mass or more and 30% by mass or less with respect to the total amount of the cleaning agent. Good.
- the antifouling agent may contain the builder (such as sodium bicarbonate) as an antifouling aid.
- the ratio of the antifouling aid can be selected from the range of about 0.01 to 100 parts by weight (for example, 0.03 to 50 parts by weight), preferably 100 parts by weight of the surfactant.
- the amount may be about 0.05 to 30 parts by mass, more preferably about 0.1 to 20 parts by mass, and particularly about 0.5 to 20 parts by mass (for example, 1 to 10 parts by mass).
- the antifouling agent of the present invention is applied to an endoscope and / or an endoscope-related instrument (particularly, an endoscope lens and / or an endoscope mounting hood) ex vivo.
- the aspects such as the constituent components and the ratio thereof may be the same as those of the cleaning agent. Therefore, the constituents and their proportions in the antifouling agent are used in the above-mentioned cleaning agent by replacing the terms “cleaning agent” and “cleaning” with “antifouling agent” and “antifouling”, respectively. Can be applied to.
- the antifouling agent As a method of applying the antifouling agent (antifouling treatment), the antifouling agent is applied or adhered to an endoscope and / or an endoscope-related instrument (particularly, an endoscope lens and / or an endoscope mounting hood).
- the method is not particularly limited as long as it is a method that can be performed, and for example, any of coating, spraying, dipping, and the like may be used.
- Examples 17 to 26 Sodium bicarbonate and trisodium citrate dihydrate were added to purified water in the blending amounts shown in Table 2, and the mixture was sufficiently stirred to obtain a cleaning agent.
- Test Example 1 (Oil film detergency using a slide glass) ⁇ Test method> 1) The fat part of the excised porcine stomach model is melted by heating, and 20 g of oil and 0.1 g of oil red are dissolved in 60 mL of chloroform. 2) The slide glass is immersed in the oil film model solution of 1) for 2 seconds (this slide glass is a set of 3 sheets). 3) Dry and solidify at room temperature for 1 to 2 hours and measure the weight (oil film adhesion amount: 14 ⁇ 2 mg). 4) Put 70 mL of each of the cleaning agents obtained in Examples 1 to 26 or Comparative Examples 1 to 6 at 25 ⁇ 1 ° C. in a separate beaker.
- Test Example 2 (Cleaning agent stability test) ⁇ Test method> Each of the detergents obtained in Examples 1 to 26 and Comparative Examples 2 to 6 was sealed in 50 mL vials and stored at 5 ° C. or 40 ° C. for 1 month. ⁇ Evaluation criteria> ⁇ : Transparent, uniform liquid without separation and precipitation ⁇ : Uniform liquid with white turbidity but without separation and precipitation x: Non-uniformity in which the liquid is completely separated or a precipitate is formed liquid
- Test Example 1 and Test Example 2 are shown in Tables 1 to 3. All of the cleaning agents of the examples showed higher cleaning rates than the cleaning agents of Comparative Examples 1 to 6. In particular, the cleaning agents of Examples 7 to 15 and Examples 17 to 26 were excellent in storage stability for 1 month at 5 ° C. and 40 ° C.
- Examples 27 to 28> In the amounts shown in Table 4, sodium bicarbonate and trisodium citrate dihydrate were added to purified water and stirred sufficiently to obtain a cleaning agent.
- Test example 3 oil film detergency using an endoscope lens
- ⁇ Test method> Oil is collected by heat melting the fat part of the excised porcine stomach model. 2) A predetermined amount of the oil from 1) is adhered to the dry endoscope lens surface, and an image is taken. 3) The tip of the endoscope is immersed in a beaker containing 10 mL of the cleaning agent of Examples 27 to 30 or Comparative Example 7 for 60 seconds. 4) Take an image after insufflation and suction. 5) The images of 2) and 4) are compared to evaluate the cleanability.
- ⁇ Evaluation criteria> ⁇ ... 90% or more dirt removal ⁇ ... 70 to less than 90% dirt removal ⁇ ... 50 to less than 70% dirt removal ⁇ ... 50% or less dirt removal
- Test Example 3 The results of Test Example 3 are shown in FIG. In Comparative Example 7, almost no dirt was removed, whereas the cleaning agents of Examples 27 to 30 all showed a high dirt removal rate of 70% or more.
- Test Example 4 (Oil film detergency using an endoscope mounting hood) ⁇ Test method> 1) The fat part of the excised porcine stomach model is melted by heating, and 20 g of oil and 0.1 g of oil red are dissolved in 60 mL of chloroform. 2) The endoscope apparatus hood is immersed in the oil film model solution of 1) for 1 second, and a photograph is taken. 3) Immerse in a beaker containing 20 mL of the cleaning agent of Examples 31 and 32 or Comparative Example 8 at 25 ⁇ 1 ° C. for 1 minute and take a picture. 4) The photographs 2) and 3) are compared to evaluate the cleaning performance. ⁇ Evaluation criteria> ⁇ ... 70% or more dirt removal ⁇ ... 50-70% dirt removal ⁇ ... 50% dirt removal
- Test Example 4 The results of Test Example 4 are shown in FIG. Examples 31 and 32 both showed a high soil removal rate.
- Test Example 5 (antifogging property) ⁇ Test method> 1) 50 ⁇ L of the cleaning agent (25 ⁇ 1 ° C.) obtained in Examples 33 and 34 or Comparative Example 9 is dropped on a slide glass and allowed to adjust to the whole. 2) Place the slide glass of 1) horizontally at 5 ° C./smooth humidity for 10 minutes. 3) Move into a 40 ° C / 75% RH thermostat and place horizontally for 2 minutes. 4) Immediately after taking out from the thermostat, the anti-fogging effect is evaluated by ⁇ , ⁇ , ⁇ at room temperature / smooth humidity. ⁇ Evaluation criteria> ⁇ : Sufficient anti-fogging effect is observed ⁇ : Slight anti-fogging effect is observed ⁇ : Anti-fogging effect is not recognized
- Test Example 5 The results of Test Example 5 are shown in FIG. Examples 33 and 34 showed a high anti-fogging effect.
- Example 35 Using the cleaning agent of Example 15 as an antifouling agent, the endoscope lens was antifouling treated.
- the antifouling treatment was performed by applying an antifouling agent to the endoscope lens surface with a cotton swab.
- Endoscopic submucosal dissection (ESD) is performed on patients with colorectal tumors in a conventional manner using the antifouling-treated endoscope, and the endoscope after submucosal dissection is performed. Images were observed and evaluated according to the following criteria.
- Grade 0 No dirt adheres to the endoscope lens.
- Grade 1 Level of dirt that cannot be completely removed by the above water washing, but the field of view is not extremely blurred (level 1 in FIG. 6).
- Grade 2 Level at which the dirt cannot be completely removed by the above water washing and the field of view becomes extremely unclear and ESD cannot be sustained (level 2 in FIG. 6).
- Grade 0 Level without fat in fat tissue (level 0 in FIG. 7)
- Grade 1 Level at which there is a little fat in the adipose tissue (level 1 in FIG. 7)
- Grade 2 The level of fat in the adipose tissue that increases the difficulty of peeling (level 2 in FIG. 7)
- Example 36 In Example 35, instead of the cleaning agent of Example 15, a commercially available anti-fogging endoscope for natural aperture [manufactured by Sugiura Laboratory, “SL cleaner”, component (linear alkylbenzene sulfonate (anionic surfactant) Agent), polyoxyethylene alkyl ether, ethanol)] using an endoscope antifouling treated in the same manner as in Example 35, before and after exfoliation of the submucosal layer Images were observed and evaluated.
- SL cleaner linear alkylbenzene sulfonate (anionic surfactant) Agent
- Example 35 The results obtained in Example 35 and Example 36 are summarized in the following table. “%” In the grade indicates the ratio of each grade to the entire patient.
- the antifouling treatment can suppress the adhesion of dirt to the endoscope lens even after the patient's ESD treatment.
- Example 35 using an antifouling agent containing a specific surfactant as an antifouling component, the submucosal fat in the patient compared to Example 36 using a commercially available anti-fogging endoscope for natural openings.
- the degree of fat in the tissue was the same (no superiority (NS)), the adhesion of dirt to the endoscope lens could be suppressed more preferentially.
- Example 37 In Example 36, 5 cases where the adhesion of soil after peeling of the submucosal layer was evaluated as Grade 1 and 5 cases evaluated as Grade 2 were further used in vivo using the cleaning agent of Example 15.
- the endoscope lens (and the hood for attaching the endoscope) was washed.
- the cleaning agent of Example 15 is injected through the forceps channel with the endoscope facing upward, and the cleaning agent is held in the endoscope mounting hood for 30 seconds (that is, the endoscope lens is mounted). And kept in a state of being submerged in the cleaning agent).
- movement using an endoscope can be provided.
- the cleaning agent of the present invention can clean the endoscope lens and / or endoscope mounting hood dirt in vivo, thereby greatly reducing the burden on doctors and patients in the operation using the endoscope. can do.
- the cleaning agent of the present invention improves the antifogging property of the endoscope lens and / or the endoscope mounting hood, the convenience of the treatment using the endoscope can be improved.
- the antifouling agent of the present invention it is possible to suppress or prevent the adhesion of dirt to the endoscope lens and the endoscope mounting hood in advance prior to the treatment using the endoscope.
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Abstract
Description
また、本発明は、このような内視鏡を予め防汚処理するのに有用な防汚剤に関する。
(1)内視鏡を用いた施術時(又は内視鏡を用いた施術中)に生体内で使用する洗浄剤。
(2)界面活性剤を含有することを特徴とする前記(1)に記載の洗浄剤。
(3)界面活性剤を含有しないことを特徴とする前記(1)に記載の洗浄剤。
(4)内視鏡及び/又は内視鏡関連器具(特に、内視鏡レンズ及び/又は内視鏡用装着フード)の汚れを除去するための、前記(1)~(3)のいずれか1項に記載の洗浄剤。
(5)HLBが1~11の範囲である非イオン性界面活性剤(i)と、HLBが11~20の範囲である非イオン性界面活性剤(ii)とを含むことを特徴とする、前記(2)又は(4)に記載の洗浄剤。
(6)洗浄助剤を少なくとも1種含有することを特徴とする前記(1)~(5)のいずれか1項に記載の洗浄剤。
(7)内視鏡の送水ノズル、鉗子チャンネル又はウォータージェットノズルから送液されることを特徴とする前記(1)~(6)に記載の洗浄剤。
防汚剤の構成成分は、前記洗浄剤と同様の成分であってもよい。代表的には、防汚剤は、HLBが1~11の範囲である非イオン性界面活性剤(i)と、HLBが11~20の範囲である非イオン性界面活性剤(ii)とを含んでいてもよい。
防汚剤は、さらに、防汚助剤(例えば、炭酸水素ナトリウムなどの洗浄助剤と同様の成分)を含んでいてもよい。
このような方法は、前記洗浄方法と組み合わせてもよい。すなわち、このような方法は、前記防汚剤で、内視鏡及び/又は内視鏡関連器具(特に、内視鏡レンズ及び/又は内視鏡用装着フード)を防汚処理した後、内視鏡を用いた施術時(又は内視鏡を用いた施術中)に、生体内で内視鏡及び/又は内視鏡関連器具(特に、内視鏡レンズ及び/又は内視鏡用装着フード)を洗浄する方法[又は洗浄し、内視鏡を用いた施術時に、内視鏡及び/又は内視鏡関連器具(特に、内視鏡レンズ及び/又は内視鏡用装着フード)に対する生体内における汚れの付着を抑制しつつ、汚れを除去する方法]であってもよい。
なお、本発明(洗浄剤、洗浄方法、防汚剤、防汚処理方法)において、内視鏡を用いた施術は、特に限定されないが、例えば、内視鏡的粘膜切除術(EMR)又は内視鏡的粘膜下層剥離術(ESD)であってもよい。
なお、ESDは、EMRで切除できない部位に腫瘍がある場合や、サイズが大きな腫瘍の場合に利用される手術であり、ESDより手術時間が長く、汚れが付着する確率が高い。そのため、本発明は、特に、ESDにおいて好適に利用してもよい。
本発明は、内視鏡を用いた施術時に生体内で使用する洗浄剤に関する。本発明において、「内視鏡を用いた施術」とは、内視鏡を使用して実施する診察、治療及び予防を包含する。本発明の前記洗浄剤は、生体への安全性が高く、且つ、内視鏡レンズ及び/又は内視鏡用装着フード汚れの洗浄能力を充分に有するように洗浄成分を含めばよい。前記洗浄成分は、特に限定されず、公知の種々の洗浄成分を含有してもよい。なお、洗浄成分は、後述のように、防汚成分として用いることもできる。
HLBは{(親水基部分の分子量/界面活性剤の分子量)×100/5}、又は[{親水基重量/(疎水基重量+親水基重量)}×100/5]、又は{(親水基の重量%)×1/5}によって計算することができる。
HLBの値は0~20であり、値が20に近いほど親水性が高いことを示している。
なお、上記EOはエチレンオキサイドを表す。
前記界面活性剤の含有量は、用いる界面活性剤の組合せにより、適宜選択してもよい。
また、本態様において、前記洗浄成分の含有量は、特に限定されないが、例えば、本発明の洗浄剤の総量に対して、0.01質量%~10質量%としてもよい。
なお、前記界面活性剤を含有しない本発明の前記洗浄剤は、好ましくは、消泡剤を含有しなくても、洗浄時における泡立ちが抑えられる。
本発明の洗浄剤(又はその構成成分)は、内視鏡及び/又は内視鏡関連器具(又は内視鏡装着機器)、特に、内視鏡レンズ及び/又は内視鏡用装着フードの防汚剤(表面処理剤、防汚処理剤、表面保護剤)として使用することもできる。
表1に示す配合量で、まずジグリセリンカプリル酸モノエステル、テトラグリセリンラウリン酸モノエステル、デカグリセリンカプリル酸モノエステルを精製水に加え、ウォーターバス中、スターラーで撹拌しながら、80℃まで加熱した。溶解確認後、40℃以下に冷却し、炭酸水素ナトリウムを加え、溶解するまで撹拌した。溶解確認後、30℃以下に冷却し、予め精製水で5倍希釈したシリコーン樹脂エマルジョン(消泡剤)を投入し、均一に溶解するまで撹拌した。最後に、精製水を加えて全量を100gとし、洗浄剤とした。
なお、表1における配合成分の数値の単位はg(グラム)である。以下、表2~6についても同様である。
表2に示す配合量で、炭酸水素ナトリウム、クエン酸三ナトリウム二水和物を精製水に加え、十分撹拌し、洗浄剤とした。
精製水100gを洗浄剤とした。
表3に示す配合量で、ジグリセリンカプリル酸モノエステル、デカグリセリンカプリル酸モノエステル、ポリソルベート80を精製水に加え、ウォーターバス中スターラーで撹拌しながら、80℃まで加熱した。溶解確認後、室温まで冷却し、精製水を加えて全量を100gとし、洗浄剤とした。
<試験方法>
1) 切除ブタ胃モデルの脂肪部位を熱溶融させて油分20g、オイルレッド0.1gをクロロホルム60mLに溶解する。
2) 前記1)の油膜モデル溶液にスライドガラスを2秒間、浸漬させる(このスライドガラスは3枚を1組とする)。
3) 室温で1~2時間、乾燥固化させ、重量を測定する(油膜付着量;14±2mg)。
4) 25±1℃の実施例1~26又は比較例1~6で得た洗浄剤をそれぞれ、別ビーカーに70mL入れる。
5) 2)のビーカーに3)で油膜形成したスライドガラスを1分間、浸漬させる。
6) 水の入ったビーカー(75mL)に1分間、撹拌浸盪(100rpm)させる。
7) 自然乾燥させた後、3枚1組をクロロホルムに溶解させ50mLとし、吸光度を測定し、洗浄率を算出する。
<洗浄率算出方法>
洗浄率(%)=(精製水で洗浄した際の吸光度)÷(洗浄剤で洗浄した際の吸光度)×100
<試験方法>
実施例1~26及び比較例2~6で得た洗浄剤を、それぞれバイアルに50mL入れて密封し、5℃又は40℃で1ヵ月間保存した。
<評価基準>
○…透明であり、分離及び沈殿のない均一な液
△…白濁しているが、分離及び沈殿のない均一な液
×…完全に液が分離している又は沈殿物が生じている不均一な液
実施例の洗浄剤は、全て、比較例1~6の洗浄剤と比較して高い洗浄率を示した。また、特に実施例7~15及び実施例17~26の洗浄剤は、5℃及び40℃における1ヵ月の保存安定性にも優れていた。
表4に示す配合量で、炭酸水素ナトリウム、クエン酸三ナトリウム二水和物を精製水に加え、十分撹拌し、洗浄剤とした。
表4に示す配合量で、ジグリセリンカプリル酸モノエステル、デカグリセリンカプリル酸モノエステルを水に加え、ウォーターバス中スターラーで撹拌しながら、80℃まで加熱した。溶解確認後、室温まで冷却し、精製水を加えて全量を100gとし、洗浄剤とした。
精製水100gを洗浄剤とした。
<試験方法>
1) 切除ブタ胃モデルの脂肪部位を熱溶融させて油分を採取する。
2) 乾いた内視鏡レンズ面に前記1)の油分を一定量付着させ、画像を撮影する。
3) 内視鏡先端を、実施例27~30又は比較例7の洗浄剤10mLを入れたビーカーに60秒間浸漬させる。
4) 送気及び吸引後、画像を撮影する。
5) 前記2)と4)の画像を比較し、洗浄性を評価する。
<評価基準>
◎…90%以上の汚れ除去
○…70~90%未満の汚れ除去
△…50~70%未満の汚れ除去
×…50%未満の汚れ除去
比較例7では汚れがほとんど除去できていないのに対し、実施例27~30の洗浄剤は、いずれも70%以上の高い汚れ除去率を示した。
表5に示す配合量で、ジグリセリンカプリル酸モノエステル、デカグリセリンカプリル酸モノエステルを水に加え、ウォーターバス中スターラーで撹拌しながら、80℃まで加熱した。溶解確認後、室温まで冷却し、精製水を加えて全量を100gとし、洗浄剤とした。
精製水100gを洗浄剤とした。
<試験方法>
1) 切除ブタ胃モデルの脂肪部位を熱溶融させて油分20g、オイルレッド0.1gをクロロホルム60mLに溶解する。
2) 前記1)の油膜モデル溶液に内視鏡用装置フードを1秒間浸漬させ、写真を撮影する。
3) 25±1℃の実施例31、32又は比較例8の洗浄剤20mLを入れたビーカーに1分間浸漬させ、写真を撮影する。
4) 前記2)と3)の写真を比較し、洗浄性を評価する。
<評価基準>
○…70%以上の汚れ除去
△…50~70%未満の汚れ除去
×…50%未満の汚れ除去
実施例31及び32はいずれも、高い汚れ除去率を示した。
表6に示す配合量で、ジグリセリンカプリル酸モノエステル、デカグリセリンカプリル酸モノエステルを精製水に加え、ウォーターバス中スターラーで撹拌しながら、80℃まで加熱した。溶解確認後、室温まで冷却し、精製水を加えて全量を100gとし、洗浄剤とした。
精製水100gを洗浄剤とした。
<試験方法>
1) 実施例33、34又は比較例9で得た洗浄剤(25±1℃)50μLをスライドガラスに滴下し、全体になじませる。
2) 前記1)のスライドガラスを5℃/なりゆき湿度で10分間水平に設置する。
3) 40℃/75%RHの恒温機内に移し、2分間水平に設置する。
4) 恒温機から取り出し直後、室温/なりゆき湿度で防曇効果を○、△、×で評価する。
<評価基準>
○…十分な防曇効果が認められる
△…防曇効果がわずかに認められる
×…防曇効果が認められない
実施例33及び34は、高い防曇効果を示した。
実施例15の洗浄剤を防汚剤として用い、内視鏡レンズを防汚処理した。防汚処理は、内視鏡レンズ面に防汚剤を綿棒で塗布することにより行った。
このように防汚処理した内視鏡を用いて、慣用の方法にて、大腸腫瘍を有する患者に対して内視鏡的粘膜下層剥離術(ESD)を行い、粘膜下層剥離後の内視鏡画像を観察し、以下の基準で評価した。
グレード(Grade)0:内視鏡レンズに汚れの付着が無い。または、付着した汚れが、結腸直腸内での鉗子チャンネルからの注入又は内視鏡システムによる水洗浄により、完全に除去されるレベル(図6の0のレベル)
グレード(Grade)1:汚れは、上記水洗浄によっては完全に除去できないものの、視野が極端に不鮮明にならないレベル(図6の1のレベル)
グレード(Grade)2:汚れが、上記水洗浄によっては完全に除去できない上、視野が極端に不鮮明になり、ESDを持続できないレベル(図6の2のレベル)
グレード(Grade)0:脂肪組織中の脂肪分が無いレベル(図7の0のレベル)
グレード(Grade)1:脂肪組織中の脂肪分が少しあるレベル(図7の1のレベル)
グレード(Grade)2:剥離を困難にするほど、脂肪組織中の脂肪分が多いレベル(図7の2のレベル)
また、ESD中、レンズに曇りはほぼ認められなかった。
実施例35において、実施例15の洗浄剤にかえて市販の自然開口向け内視鏡用くもり止め[杉浦研究所製、「SLクリーナー」、成分(直鎖アルキルベンゼンスルホン酸塩(陰イオン性界面活性剤)、ポリオキシエチレンアルキルエーテル、エタノール)]を使用したこと以外は、実施例35と同様にして防汚処理した内視鏡を用いて、ESDを行い、粘膜下層の剥離前後の内視鏡画像を観察し、評価した。
実施例36において、粘膜下層剥離後における汚れの付着がグレード1と評価された5例及びグレード2と評価された5例につき、さらに、実施例15の洗浄剤を用いて、生体内にて、内視鏡レンズ(及び内視鏡装着用フード)を洗浄した。
洗浄は、内視鏡を上に向けた状態で、鉗子チャンネルを通じて実施例15の洗浄剤を注入し、内視鏡装着用フードの中に洗浄剤を30秒間保持(すなわち、内視鏡レンズを洗浄剤中に沈めた状態で保持)することで行った。
この結果より、グレードが1又は2と評価され、汚れが付着した例についても、本発明の洗浄剤により容易に汚れを洗浄できることがわかった。
さらに、本発明の防汚剤によれば、内視鏡を用いた施術に先立って、予め、内視鏡レンズや内視鏡用装着フードに対する汚れ付着を抑制又は防止できる。
2 ライトガイド
3 鉗子チャンネル
4 ウォータージェットノズル
5 送気・送水ノズル
6 内視鏡用装着フード
Claims (13)
- 内視鏡を用いた施術時に生体内で使用する洗浄剤。
- 界面活性剤を含有することを特徴とする請求項1に記載の洗浄剤。
- 界面活性剤を含有しないことを特徴とする請求項1に記載の洗浄剤。
- 内視鏡レンズ及び/又は内視鏡用装着フードの汚れを除去するための、請求項1~3のいずれか1項に記載の洗浄剤。
- HLBが1~11の範囲である非イオン性界面活性剤(i)と、HLBが11~20の範囲である非イオン性界面活性剤(ii)とを含むことを特徴とする、請求項2又は4に記載の洗浄剤。
- 洗浄助剤を少なくとも1種含有することを特徴とする請求項1~5のいずれか1項に記載の洗浄剤。
- 内視鏡の送水ノズル、鉗子チャンネル又はウォータージェットノズルから送液されることを特徴とする請求項1~6に記載の洗浄剤。
- 請求項1~7に記載の洗浄剤により、内視鏡を用いた施術時に、生体内で内視鏡レンズ及び/又は内視鏡用装着フードを洗浄する方法。
- 内視鏡を用いた施術が、内視鏡的粘膜切除術又は内視鏡的粘膜下層剥離術である請求項8記載の方法。
- 内視鏡レンズ及び/又は内視鏡用装着フードを防汚処理するための防汚剤であり、HLBが1~11の範囲である非イオン性界面活性剤(i)と、HLBが11~20の範囲である非イオン性界面活性剤(ii)とを含む防汚剤。
- さらに、防汚助剤を含む請求項10記載の防汚剤。
- 請求項10又は11記載の防汚剤で、内視鏡レンズ及び/又は内視鏡用装着フードを防汚処理し、内視鏡を用いた施術時に、内視鏡レンズ及び/又は内視鏡用装着フードに対する生体内における汚れの付着を抑制又は防止する方法。
- 内視鏡を用いた施術が、内視鏡的粘膜切除術又は内視鏡的粘膜下層剥離術である請求項12記載の方法。
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| EP14846871.3A EP3053996A4 (en) | 2013-09-30 | 2014-09-29 | Endoscope lens cleaner |
| JP2015539437A JP6504404B2 (ja) | 2013-09-30 | 2014-09-29 | 内視鏡レンズクリーナー |
| CN201480053993.7A CN105849244B (zh) | 2013-09-30 | 2014-09-29 | 内窥镜镜头清洗剂 |
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| US (1) | US10264957B2 (ja) |
| EP (1) | EP3053996A4 (ja) |
| JP (1) | JP6504404B2 (ja) |
| CN (1) | CN105849244B (ja) |
| WO (1) | WO2015046532A1 (ja) |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP6504404B2 (ja) | 2019-04-24 |
| US10264957B2 (en) | 2019-04-23 |
| US20160235284A1 (en) | 2016-08-18 |
| EP3053996A1 (en) | 2016-08-10 |
| JPWO2015046532A1 (ja) | 2017-03-09 |
| CN105849244B (zh) | 2019-05-17 |
| EP3053996A4 (en) | 2017-05-31 |
| CN105849244A (zh) | 2016-08-10 |
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