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US20150299600A1 - Lubricant Regulating Agent - Google Patents

Lubricant Regulating Agent Download PDF

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Publication number
US20150299600A1
US20150299600A1 US14/380,638 US201214380638A US2015299600A1 US 20150299600 A1 US20150299600 A1 US 20150299600A1 US 201214380638 A US201214380638 A US 201214380638A US 2015299600 A1 US2015299600 A1 US 2015299600A1
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Prior art keywords
surfactant
lubricity
angle
water
adhe
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English (en)
Inventor
Seiichi Ikeda
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FAIN-Biomedical Inc
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FAIN-Biomedical Inc
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Publication of US20150299600A1 publication Critical patent/US20150299600A1/en
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M141/00—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential
    • C10M141/08—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential at least one of them being an organic sulfur-, selenium- or tellurium-containing compound
    • 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
    • A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
    • A61L29/14—Materials characterised by their function or physical properties, e.g. lubricating compositions
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M173/00—Lubricating compositions containing more than 10% water
    • C10M173/02—Lubricating compositions containing more than 10% water not containing mineral or fatty oils
    • 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
    • A61L2400/00—Materials characterised by their function or physical properties
    • A61L2400/10—Materials for lubricating medical devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0043—Catheters; Hollow probes characterised by structural features
    • A61M25/0045—Catheters; Hollow probes characterised by structural features multi-layered, e.g. coated
    • A61M2025/0046—Coatings for improving slidability
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0043—Catheters; Hollow probes characterised by structural features
    • A61M2025/0062—Catheters; Hollow probes characterised by structural features having features to improve the sliding of one part within another by using lubricants or surfaces with low friction
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/08—Inorganic acids or salts thereof
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/08—Inorganic acids or salts thereof
    • C10M2201/081—Inorganic acids or salts thereof containing halogen
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/08—Inorganic acids or salts thereof
    • C10M2201/084—Inorganic acids or salts thereof containing sulfur, selenium or tellurium
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/121—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms
    • C10M2207/122—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms monocarboxylic
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
    • C10M2209/108—Polyethers, i.e. containing di- or higher polyoxyalkylene groups etherified
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
    • C10M2215/08—Amides [having hydrocarbon substituents containing less than thirty carbon atoms]
    • C10M2215/082—Amides [having hydrocarbon substituents containing less than thirty carbon atoms] containing hydroxyl groups; Alkoxylated derivatives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
    • C10M2219/042—Sulfate esters
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
    • C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/50—Medical uses

Definitions

  • the present invention relates to a lubricity regulating agent for regulating the lubricity of a surface of silicone rubber, and is suitable for use, for example, in a circulating liquid for a catheter simulator using a blood vessel model made of silicone rubber.
  • Silicone rubber is utilized in various industrial fields as an elastic material, and the lubricity of a surface of silicone rubber must be controlled in some cases.
  • the present inventors developed and commercialized a catheter simulator which resembles a human shape (see Patent Document 1).
  • a partition member is built in a mannequin main body made of a transparent material so that a blood vessel model as a three-dimensional model is supported by the one surface of the partition member, and an auxiliary instrument for getting the blood vessel model to work is arranged.
  • the blood vessel model is formed of silicone rubber
  • the auxiliary instrument is provided with a tank, a pump and a connection pipe.
  • a circulating liquid is contained in the tank, and circulates through the blood vessel model via the connection pipe with a pump.
  • Patent Document 2 as a document which discloses a technique relevant to the present invention.
  • the catheter simulator disclosed in Patent Document 1 enables a catheter to be inserted into a blood vessel model while distributing a circulating liquid through the blood vessel model made of silicone rubber.
  • liquids mainly comprising silicone oil (oil-based circulating liquids) and those mainly comprising water (water-based circulating liquids) are used as the circulating liquid
  • the water-based circulating liquids are preferably used in connection with cost and from the viewpoint of similarity to blood.
  • a surfactant as a lubricity regulating agent is mixed with water, thereby making it possible to reduce the contact resistance between the catheter and the internal wall of the blood vessel and to smoothly insert the catheter into the blood vessel model.
  • a blood vessel model in which a circulating liquid obtained by mixing a surfactant with water is circulated differs from an actual blood vessel through which blood circulates.
  • a simulator using such a circulating liquid inevitably brought an uncomfortable feeling of catheter insertion as compared with the feeling at the time of an actual operation.
  • the contact resistance at a meandering site of the blood vessel model was quite larger than that of an actual operation.
  • the inserted catheter was allowed to stand for several seconds, such a phenomenon was observed wherein the coefficient of static friction between the catheter and the blood vessel model abnormally increased, leading to the difficulty in pulling out the inserted catheter (which phenomenon is hereinafter referred to as “adhesion”).
  • silicone oil as a circulating liquid does not cause the above problem.
  • silicone oil is expensive, and so-called oil-based silicone oil is significantly different in physical properties from blood, and thus reality is lost in the feeling of handling at the time of inserting a catheter.
  • the present inventors attempted to increase the amount of the surfactant to be incorporated in order to reduce the contact resistance to the internal wall of the blood vessel model, but could not solve the problems of increase in resistance at the meandering site and adhesion. Further, the increase in amount of the surfactant to be incorporated causes slimy feeling in a circulating liquid, and thus is not preferred.
  • the present inventor repeatedly made earnest reviews to make the feeling of catheter insertion when using a so-called water-based circulating liquid equal to the feeling of insertion at the time of an actual operation, and, as a result, have found that, upon using a surfactant and a water-soluble ion compound in combination as a lubricity regulating agent, the feeling of insertion of a catheter into a blood vessel model becomes very close to the feeling of catheter insertion at the time of an actual operation. Thus, the insertion resistance does not increase even at a meandering site of a blood vessel model, and little adhesion between the blood vessel model and the catheter would be caused.
  • a first aspect of the present invention is defined as follows: a lubricity regulating liquid for regulating the lubricity of a surface of silicone rubber, comprising water, a surfactant, and a water-soluble ion compound.
  • the lubricity regulating liquid mainly comprises water, and is obtained by adding, to water, a lubricity regulating agent comprising a surfactant and a water-soluble ion compound and mixing them together.
  • a lubricity regulating agent comprising a surfactant and a water-soluble ion compound and mixing them together.
  • the phrase “water-soluble ion compound” used herein is regarded as referring to a water-soluble ion compound except the surfactant.
  • the role of the surfactant mainly resides in reducing the coefficient of dynamic friction between silicone rubber and a member brought in contact with the silicone rubber. Due to this, when silicone rubber is adapted a blood vessel model and the member brought in contact with the silicone rubber is a catheter, the resistance at the time of inserting a catheter into the blood vessel model is reduced so that an operator can smoothly insert the catheter into the blood vessel model.
  • the role of the water-soluble ion compound resides in preventing adhesion between silicone rubber and a member brought in contact with the silicone rubber (namely, reducing the coefficient of static friction) in addition to reducing the above-described coefficient of dynamic friction.
  • the lubricity regulating liquid according to the present invention is characterized in that not only the coefficient of dynamic friction, but also the coefficient of static friction between silicone rubber and a member brought in contact with the silicone rubber is reduced by the coexistence of a surfactant and a water-soluble ion compound.
  • the surfactant is a cationic surfactant
  • the adhesion between silicone rubber and a member brought in contact with the silicone rubber can be prevented even if the lubricity regulating agent does not contain the water-soluble ion compound.
  • the feeling of resistance at the time of inserting a catheter is reduced by further adding a water-soluble metal salt.
  • One or two or more selected from the group consisting of a cationic surfactant, an anionic surfactant, a nonionic surfactant and a zwitterionic surfactant can be used as the surfactant.
  • a cationic surfactant when used together with a water-soluble ion compound, brings especially small increases in resistance at a meandering site and adhesion, and is thus preferred. Also, the cationic surfactant has excellent bactericidal action, and thus can exert the antifungal and bactericidal effects on a silicone rubber surface.
  • a nonionic surfactant is also preferably used as the surfactant.
  • the nonionic surfactant can prevent a rise in ion concentration of the lubricity regulating liquid due to the addition of the surfactant, and makes the pH close to neutrality, so that metals in the argent is free from corrosion.
  • the surfactant concentration may be appropriately regulated depending, for example, on the kind of surfactant, and preferably ranges from 0.005 mmol/L or more and 100 mmol/L or less.
  • a surfactant concentration of less than 0.005 mmol/L is not preferred as causing large contact resistance between silicone rubber and a member brought in contact with the silicone rubber and also causing adhesion.
  • An amount of the surfactant to be incorporated which exceeds 100 mmol/L is not preferred as bringing impaired physical properties of the lubricity regulating liquid (causing slimy feeling). More preferably, the amount is 0.05 mmol/L or more and 10 mmol/L or less.
  • a water-soluble metal salt, a water-soluble ammonium salt (for example, ammonium chloride and ammonium sulfate) and the like can be used as the water-soluble ion compound.
  • One or two or more selected from the group consisting of an alkali metal salt, an alkali earth metal salt, an aluminum salt and an iron salt can be used as the water-soluble metal salt. According to the inventor's test results, the use of these water-soluble metal salts in combination with a surfactant can enhance the lubricity of a surface of silicone rubber as compared with the use of a surfactant alone, and also can avoid the problem of adhesion.
  • the silicone rubber to which the lubricity regulating liquid according to the present invention is applied is not particularly limited so long as it is rubber having a siloxane skeleton in the basic skeleton.
  • the water-soluble alkyl metal salt includes sodium chloride, potassium chloride, cesium chloride, sodium sulfate, potassium sulfate, cesium sulfate, sodium nitrate, potassium nitrate and cesium nitrate.
  • the water-soluble alkali earth metal salt includes magnesium chloride, potassium chloride, barium chloride, magnesium nitrate, potassium nitrate and barium nitrate.
  • the aluminum salt includes aluminum chloride, aluminum sulfate and aluminum nitrate.
  • the iron salt includes ferrous chloride, ferric chloride, ferrous sulfate, ferric sulfate, ferrous nitrate and ferric nitrate.
  • water-soluble alkali metal salts, alkali earth metal salts, organic acid salts of metals (for example, sodium acetate) and complexes can also be used.
  • the concentration of the water-soluble metal salt in the lubricity regulating liquid is preferably 1 mmol/L or more and 100 mmol/L or less.
  • a water-soluble metal salt concentration of less than 1 mmol/L easily causes adhesion between silicone rubber and a member brought in contact with the silicone rubber.
  • a water-soluble metal salt concentration of more than 100 mmol/L easily causes corrosion of a metal due to the lubricity regulating liquid. More preferably, the concentration is 2 mmol/L or more and 50 mmol/L or less.
  • the water-soluble ion compound is an ammonium salt such as ammonium chloride or ammonium sulfate
  • the inventor has confirmed that the lubricity of a silicone rubber surface can be enhanced by adding the ammonium salt in an amount of 0.03 mol/L or more (preferably, 0.07 mol/L).
  • the lubricity regulating liquid of the present invention can be prepared by adding water to a preparation comprising a surfactant and a water-soluble ion compound for dissolution.
  • the preparation according to the present invention is a preparation for a lubricity regulating liquid for regulating the lubricity of a surface of silicone rubber, the preparation comprising a surfactant and a water-soluble ion compound.
  • the regulating kit according to the present invention is a kit for preparing a lubricity regulating liquid for regulating the lubricity of a surface of silicone rubber, the kit comprising a first agent comprising a surfactant and a second agent comprising a water-soluble ion compound. According to this preparation kit, the first and second agents are mixed, thereby making it possible to easily prepare a lubricity regulating liquid.
  • FIG. 1 is a front view of a pseudo blood vessel model used in a lubricity evaluation test.
  • FIG. 2 is a graph showing the relation between the rotation angle and the concentration of a metal salt in a test for evaluating the lubricity of lubricity regulating liquids of Examples 1 to 8.
  • FIG. 3 is a graph showing the relation between the rotation angle and the concentration of a metal salt in a test for evaluating the lubricity of lubricity regulating liquids of Examples 9 and 16.
  • FIG. 4 is a graph showing the relation between the rotation angle and the concentration of a metal salt in a test for evaluating the lubricity of lubricity regulating liquids of Examples 10 and 11 and Comparative Examples 10 and 11.
  • FIG. 5 is a graph showing the relation between the rotation angle and the concentration of a metal salt in a test for evaluating the lubricity of lubricity regulating liquids of Example 12 and Comparative Example 12.
  • FIG. 6 is a graph showing the relation between the rotation angle and the concentration of a metal salt in a test for evaluating the lubricity of lubricity regulating liquids of Example 13 and Comparative Example 13.
  • FIG. 7 is a graph showing the relation between the rotation angle and the concentration of added bittern in a test for evaluating the lubricity of a lubricity regulating liquid of Example 14.
  • FIG. 8 is a graph showing the relation between the rotation angle and the concentration of an added surfactant in a test for evaluating the lubricity of a lubricity regulating liquid of Comparative Example 14-1.
  • FIG. 9 is a graph showing the relation between the rotation angle and the concentration of an added bittern in a test for evaluating the lubricity of a lubricity regulating liquid of Comparative Example 14-2.
  • FIG. 10 is a graph showing the relation between the rotation angle and the amount of added MgCl 2 in a lubricity evaluation test using silicone rubber (1) and silicone rubber (2).
  • Example 1 a 16-wt % aqueous solution containing, as surfactants, sodium alkyl ether sulfate and fatty acid alkanol amide in a weight ratio of 2:1 was used, and various water-soluble metal salts as indicated in Table 1 were added thereto, thereby preparing lubricity regulating liquids.
  • the water-soluble metal salt concentrations were defined as 6 types: 0.0025, 0.005, 0.01, 0.03, 0.07 and 0.20 (mol/L).
  • Comparative Examples 1 to 8 no water-soluble metal salt was added (namely, all of Comparative Examples 1 to 8 have the same composition). In the other respects, they were similar to Examples 1 to 8, and thus are not explained herein.
  • a Silicone tube (tradename: LABORAN SILICONE TUBE manufactured by AS ONE Corporation) having an internal diameter of 3 mm was provided.
  • a silicone tube 12 was wound, three times, around a cylindrical pipe 11 made of a transparent acrylic resin having a diameter of 7 cm to be fixed thereon, thereby providing a pseudo blood vessel model 10 of which both ends were protruded and extended.
  • a catheter 20 (manufactured by Chaperone Co., thickness: 6.0 F (2 0 mm ⁇ ) was manually inserted, with constant force, from one end side of the silicone tube 12 , so that the catheter 20 entered the silicone tube while rotating. Further, the catheter 20 continued to be inserted until it could not resist the frictional resistance and therefore stopped. The rotation angle at a position where the catheter 20 stopped was measured, and this angle was defined as an index of lubricity. Measurement was carried out a plurality of times.
  • the catheter 20 was retained as it was for about 10 seconds at a position where it stopped, and thereafter pulled in a direction where the catheter 20 would retract.
  • the case where it could be easily pulled out was evaluated as “no adhesion” and the case where it could not be easily pulled out was evaluated as “adhesion.” Measurement was carried out three times. Even if adhesion occurred, the catheter 20 could be pulled out by quickly repeating the application of force toward the entering direction and force toward the retracting direction to the catheter 20 .
  • Table 2 indicates the results on the rotation angle and the presence or absence of adhesion for Examples 1 to 8 and Comparative Examples 1 to 8 as described above (the cases where the metal salt concentration is 0 in this table correspond to Comparative Examples 1 to 8).
  • FIG. 2 indicates a graph showing the relation between the rotation angle and the metal salt concentration.
  • the rotation angle was drastically raised by adding the water-soluble metal salts even though the surfactant concentration was constant.
  • the rotation angle rose as the amount of the water-soluble metal salts (NaCl, KCl, MgCl 2 , CaCl 2 , Al 2 (SO 3 ), FeCl 3 , MgCl 2 +NaCl, CH 3 COONa) to be added was increased, and became an almost constant value at a water-soluble metal salt concentration of 0.005 mol/L or more. From the above results, it has been found that the lubricity of the silicone rubber surface drastically improves due to the use of the surfactant and the water-soluble metal salt in combination.
  • the water-soluble metal salt used was magnesium chloride in all the cases, and it was mixed with various surfactants to prepare lubricity regulating liquids (see Table 3).
  • the surfactant concentrations of the prepared solutions were defined as 0, 0.00005, 0.000075, 0.0001, 0.0002, 0.0004, 0.0005, 0.00075, 0.001, 0.002 and 0.004 (mol/L) for the respective Examples.
  • Example 16 and Comparative Examples 10 to 13 no magnesium chloride was added, and they were similar to Examples 9 to 13 in the other respects (see Table 3).
  • Example 16 and Comparative Examples 10 to 13 the evaluation results on lubricity are shown in FIGS. 3 and 6 , and those of adhesiveness are shown in Table 4.
  • a LABORAN SILICONE TUBE having an internal diameter of 3 mm manufactured by AS ONE Corporation was employed as the silicone tube used in the evaluation of lubricity.
  • Example 9 in which magnesium chloride was added was superior to Example 16 in which no magnesium chloride was added in terms of the lubricity at a low surfactant concentration of 0.2 mmol/L or less, as shown in FIG. 3 .
  • adhesiveness no adhesion occurred at a surfactant concentration of 0.05 mmol/L or more in either Examples 9 and 16.
  • the feeling of resistance at the time of catheter insertion in Example 9 was apparently smaller than that in Example 16, and it has been found that the coexistence of magnesium chloride and a cationic surfactant enabled quite smooth insertion of a catheter.
  • Examples 10 and 11 and Comparative Examples 10 and 11 using an anionic surfactant Examples 10 and 11 in which magnesium chloride was added were superior, in terms of lubricity, to Comparative Examples 10 and 11 in which no magnesium chloride was added, as shown in FIG. 4 .
  • adhesiveness no adhesion occurred at a surfactant concentration of 0.05 mmol/L or more in Examples 10 and 11, whereas adhesion occurred at a surfactant concentration of 0.05 mmol/L or less in Comparative Example 10 and at a surfactant concentration of 0 2 mmol/L or less in Comparative Example 11.
  • Example 12 in which magnesium chloride was added was superior, in terms of lubricity, to Comparative Example 12 in which no magnesium chloride was added, as shown in FIG. 5 .
  • adhesiveness no adhesion occurred at a surfactant concentration of 0.05 mmol/L or more in Example 12 and Comparative Example 12, as indicated in Table 4 above.
  • a zwitterionic (betaine type) surfactant and magnesium chloride improved both lubricity and non-adhesiveness.
  • Example 13 and Comparative Example 13 using a nonionic surfactant both Example 13 and Comparative Example 13 exhibited excellent lubricity.
  • Example 14 prepared was a solution mixture containing 500 ml of distilled water, 1 ml of a commercial kitchen detergent (mixture of anionic surfactant +nonionic surfactant: concentration: 16% by weight) and a commercially-available bittern solution (Aranami no Honnigari, manufactured by AKO ARANAMI SHIO CO., LTD.; 100 ml of this bittern solution contains 4318 mg of magnesium, 3810 mg of potassium, 3048 mg of sodium and 2032 mg of calcium). This solution mixture was used as a lubricity regulating liquid. The bittern concentrations were defined as 0, 0.25, 5, 10 and 15 (ml per liter of distilled water).
  • lubricity and adhesiveness were respectively evaluated by the methods for evaluating lubricity and adhesiveness as described above.
  • a LABORAN SILICONE TUBE having an internal diameter of 3 mm (manufactured by AS ONE Corporation) was employed as the silicone tube used in the evaluation of lubricity.
  • Comparative Example 14-1 a liquid comprising no bittern but similar to that prepared in Example 14 in the other respects was employed as the lubricity regulating liquid.
  • Comparative Example 14-2 a liquid comprising no surfactant but similar to that prepared in Example 14 in the other respects was employed as the lubricity regulating liquid.
  • Example 14 Comparative Example 14-1 and Comparative Example 14-2 are indicated in Tables 5 to 7.
  • the graphs concerning lubricity are shown in FIGS. 7 to 9 .
  • a LABORAN SILICONE TUBE having an internal diameter of 3 mm manufactured by AS ONE Corporation was employed as the silicone tube used in the evaluation of lubricity.
  • Example 14 As shown in FIG. 7 and Table 5, in Example 14, the addition of bittern to the solution mixture of distilled water and a commercially-available kitchen detergent as the lubricity regulating liquid drastically raised the rotation angle as compared with that before addition. Further, the rotation angle rose as the amount of the bittern added was increased, and became a constant value when the bittern concentration reached a certain level. The maximum value of the rotation angle was 768°.
  • Example 14 no adhesion occurred as indicated in Table 5.
  • Comparative Example 14-1 adhesion occurred when the surfactant concentration was not a certain value or more as indicated in Table 6.
  • Comparative Example 14-2 adhesion occurred in some cases even when the bittern concentration was increased as indicated in Table 7.
  • Example 15 there was prepared a lubricity regulating liquid consisting of a solution mixture of 1 L of distilled water, 0.29 g of sodium lauryl sulfate (0.001 mol/L) and magnesium chloride (hexahydrate).
  • concentrations of magnesium chloride in the lubricity regulating liquid were defined as 0, 0.0025, 0.005, 0.01, 0.03, 0.07 and 0.20 (mol per liter of distilled water).
  • the lubricity regulating liquid of Example 15 was used to evaluate the lubricity and adhesiveness of the following two kinds of silicone rubber.
  • Silicone rubber (1) LABORAN SILICONE TUBE having an internal diameter of 3 mm (AS ONE Corporation)
  • Silicone rubber (2) silicone tube obtained by coating an inner wall of a LABORAN SILICONE TUBE having an internal diameter of 6 mm (AS ONE Corporation) with ELASTOSILM8520 (manufactured by WACKER ASAHIKASEI SILICONE CO., LTD.) at a thickness of 1 5 mm
  • the silicone rubber to be applied to the lubricity regulating liquid according to the present invention is not particularly limited so long as it is rubber having a siloxane skeleton in the basic skeleton.
  • Specific examples of such silicone rubber include:
  • LABORAN SILICONE TUBE manufactured by AS ONE Corporation.
  • Aluminum sulfate tetradecahydrate-octadecahydrate (manufactured by Wako Pure Chemical Industries Ltd.)
  • Trimethylstearylammonium chloride (manufactured by Tokyo Chemical Industry Co., Ltd.)
  • Myristyl sulfobetaine (manufactured by Tokyo Chemical Industry Co., Ltd.)
  • a blood vessel model made of silicone rubber is incorporated into a case for a human model provided by the Applicant, and a tank, piping and a pump are attached thereto as auxiliary devices.
  • a tank, piping and a pump are attached thereto as auxiliary devices.
  • Into the tank 101 of tap water was put, and 300 ml of a bittern solution was further injected.
  • One hundred (100) ml of this bittern solution contains 4318 mg of magnesium, 3810 mg of potassium, 3048 mg of sodium and 2032 mg of calcium.
  • a surfactant used in Example 1 described above is added to a reference liquid obtained by mixing a predetermined amount of bittern to water.
  • the amount of a surfactant to be added can be preferably regulated by users depending on their preference.
  • a pigment, a bactericide, a preservative and other aids can be added to a circulating liquid according to need.
  • a circulating liquid When such a circulating liquid is used, the evaluation that the feeling of insertion of a catheter into the blood vessel model is close to that at the time of an operation was obtained from a plurality of doctors.
  • the catheter could be inserted, without resistance, even into a meandering portion of the blood vessel model, and no adhesion occurred therebetween even when the catheter was inserted into the blood vessel model and left as it was.

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  • Health & Medical Sciences (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
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  • Life Sciences & Earth Sciences (AREA)
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  • Compositions Of Macromolecular Compounds (AREA)
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  • Lubricants (AREA)
  • Materials For Medical Uses (AREA)
US14/380,638 2012-02-24 2012-02-24 Lubricant Regulating Agent Abandoned US20150299600A1 (en)

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JP6554984B2 (ja) * 2015-08-03 2019-08-07 住友ゴム工業株式会社 表面改質金属及び金属表面の改質方法
JP6969080B2 (ja) * 2016-08-31 2021-11-24 株式会社リコー ハイドロゲル構造体、並びにその製造方法及び用途
JP7002205B2 (ja) * 2017-03-23 2022-01-20 株式会社グッドマン シミュレータ用擬似体液及び医療用シミュレータ
JP7429967B2 (ja) * 2019-06-07 2024-02-09 イービーエム株式会社 穿刺手技訓練用人体モデル及び、それを用いたおよび穿刺手技訓練方法
JP7636059B2 (ja) 2022-07-12 2025-02-26 ファイン・バイオメディカル有限会社 血管モデルの観察装置及びその方法

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WO2013125026A1 (fr) 2013-08-29
EP2821467B1 (fr) 2018-02-14
JPWO2013125026A1 (ja) 2015-07-30
EP2821467A4 (fr) 2015-11-11
JP5992031B2 (ja) 2016-09-14

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