WO2017002599A1 - コーティング剤および当該コーティング剤で表面処理してなる医療機器 - Google Patents
コーティング剤および当該コーティング剤で表面処理してなる医療機器 Download PDFInfo
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- WO2017002599A1 WO2017002599A1 PCT/JP2016/067589 JP2016067589W WO2017002599A1 WO 2017002599 A1 WO2017002599 A1 WO 2017002599A1 JP 2016067589 W JP2016067589 W JP 2016067589W WO 2017002599 A1 WO2017002599 A1 WO 2017002599A1
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- containing polyorganosiloxane
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- 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
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/08—Materials for coatings
- A61L31/10—Macromolecular materials
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- 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
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation 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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
-
- 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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/329—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles characterised by features of the needle shaft
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
- C09D183/06—Polysiloxanes containing silicon bound to oxygen-containing groups
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
- C09D183/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/06—Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
- A61B17/06066—Needles, e.g. needle tip configurations
-
- 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
- A61L2420/00—Materials or methods for coatings medical devices
- A61L2420/02—Methods for coating medical devices
-
- 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
- A61L2420/00—Materials or methods for coatings medical devices
- A61L2420/06—Coatings containing a mixture of two or more compounds
-
- 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/02—General characteristics of the apparatus characterised by a particular materials
- A61M2205/0222—Materials for reducing friction
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- 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
- A61M2207/00—Methods of manufacture, assembly or production
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
- C08G77/16—Polysiloxanes containing silicon bound to oxygen-containing groups to hydroxyl groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/22—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
- C08G77/26—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen nitrogen-containing groups
Definitions
- the present invention relates to a coating agent and a medical device that is surface-treated with the coating agent.
- Patent Document 1 reported a silicone coating agent containing an amino group-containing polyorganosiloxane and polydiorganosiloxane at a specific mixing ratio.
- the injection needle coated with the coating agent exhibits excellent piercing properties.
- a needle coated with a silicone coating agent may be used for multiple punctures.
- a silicone-coated needle may be used when a medicine is sucked through a stopper of a medicine bottle and then injected into a patient.
- the bottle needle subjected to the silicone coating treatment may be repeatedly inserted into different infusion bags when the infusion bag is exchanged.
- the coating by the coating agent peels off from the needle surface, and friction (puncture resistance) increases during use, causing pain to the patient. For this reason, it is also required to further improve durability (suppression / prevention of coating peeling).
- the present invention has been made in view of the above circumstances, and an object thereof is to provide a coating agent with improved durability and a medical device (particularly, a needle) that is surface-treated (applied) with the coating agent.
- Another object of the present invention is to provide a coating agent with improved piercing properties and a medical device (particularly a needle) that is surface-treated (applied) with the coating agent.
- the present inventor conducted intensive research to solve the above problems. As a result, it has been found that the above-mentioned problems can be solved by controlling the mixing ratio of the amino group-containing polyorganosiloxane and the polydiorganosiloxane to a specific range and using a specific amount of the hydroxyl group-containing polyorganosiloxane. Based on the above findings, the present invention has been completed.
- R 1 and R 1 ′ each independently represent a monovalent hydrocarbon group or a hydroxyl group (—OH), wherein at least one of R 1 and at least one of R 1 ′ are a hydroxyl group (—OH),
- Each R 2 independently represents a monovalent hydrocarbon group;
- m is an integer of 1000 to 30000,
- R 4 and R 5 each independently represents a monovalent hydrocarbon group
- n is an integer of 8 to 1000
- each R 6 independently represents a monovalent hydrocarbon group or —OR 9 group.
- each R 9 independently represents a substituted or unsubstituted monovalent monovalent carbon having 1 to 4 carbon atoms.
- a coating agent comprising:
- the polydiorganosiloxane (2) is included in a mass ratio of 0.7 to 3.0 with respect to the amino group-containing polyorganosiloxane (3).
- the hydroxyl group-containing polyorganosiloxane (1) is used in an amount of 2.4-5. This can be achieved by a coating agent contained in a proportion of 5% by weight.
- FIG. 1A shows the puncture resistance at the initial stage (at 0th puncture) of a needle surface-treated by heating with the coating agents of Examples 1 to 9 (Ex. 1 to 9) and Comparative Examples 1 to 3 (Com. 1 to 3). It is a graph which shows (sliding resistance value (mN)).
- FIG. 1B shows an initial puncture (at the time of zero puncture) of a needle surface-treated by EOG treatment with the coating agents of Examples 1 to 9 (Ex. 1 to 9) and Comparative Examples 1 to 3 (Com. 1 to 3). It is a graph which shows resistance (sliding resistance value (mN)).
- FIG. 1A shows the puncture resistance at the initial stage (at 0th puncture) of a needle surface-treated by heating with the coating agents of Examples 1 to 9 (Ex. 1 to 9) and Comparative Examples 1 to 3 (Com. 1 to 3). It is a graph which shows resistance (sliding resistance value (mN)).
- FIG. 1A shows the puncture resistance at the initial stage
- FIG. 1C shows the initial state (at the time of zero puncture) of a needle surface-treated by high-pressure steam treatment with the coating agents of Examples 1 to 9 (Ex. 1 to 9) and Comparative Examples 1 to 3 (Com. 1 to 3). It is a graph which shows puncture resistance (sliding resistance value (mN)).
- FIG. 2A shows puncture resistance (sliding) after 10 punctures of a needle surface-treated with the coating agents of Examples 1 to 9 (Ex. 1 to 9) and Comparative Examples 1 to 3 (Com. 1 to 3). It is a graph which shows resistance value (mN). In FIG. 2A, a partially enlarged graph is also shown for easier comparison of Examples 3 to 9 (Ex. 3 to 9).
- FIG. 1C shows the initial state (at the time of zero puncture) of a needle surface-treated by high-pressure steam treatment with the coating agents of Examples 1 to 9 (Ex. 1 to 9) and Comparative Examples 1 to 3 (Com. 1 to 3). It is a graph which shows puncture resistance (s
- FIG. 2B shows puncture resistance (sliding) after 10 punctures of a needle surface-treated by EOG treatment with the coating agents of Examples 1 to 9 (Ex. 1 to 9) and Comparative Examples 1 to 3 (Com. 1 to 3). It is a graph which shows a dynamic resistance value (mN).
- FIG. 2C shows puncture resistance after 10 punctures of a needle surface-treated by high-pressure steam treatment with the coating agents of Examples 1 to 9 (Ex. 1 to 9) and Comparative Examples 1 to 3 (Com. 1 to 3) ( It is a graph which shows a sliding resistance value (mN).
- the coating agent of the present invention is (1) The following general formula (1):
- R 1 and R 1 ′ each independently represent a monovalent hydrocarbon group or a hydroxyl group (—OH), wherein at least one of R 1 and at least one of R 1 ′ are a hydroxyl group (—OH),
- Each R 2 independently represents a monovalent hydrocarbon group;
- m is an integer of 1000 to 30000,
- R 4 and R 5 each independently represents a monovalent hydrocarbon group
- n is an integer of 8 to 1000
- each R 6 independently represents a monovalent hydrocarbon group or —OR 9 group.
- each R 9 independently represents a substituted or unsubstituted monovalent monovalent carbon having 1 to 4 carbon atoms.
- the hydroxyl group-containing polyorganosiloxane (1) is 2.4 to 5.5 based on the total mass of the hydroxyl group-containing polyorganosiloxane (1), polydiorganosiloxane (2) and amino group-containing polyorganosiloxane (3). It is contained at a ratio of 5% by mass.
- the coating agent having the above structure forms a strong film and has excellent adhesion to the surface of a base material (for example, a medical device such as a needle, a catheter, or a cannula), and therefore suppresses the peeling of the coating from the base material. -It can be prevented and has excellent durability.
- the coating agent of this invention is excellent in lubricity. For this reason, the needle surface-treated with the coating agent of the present invention can reduce the friction during puncture (puncture resistance) and improve the puncture characteristics.
- the hydroxyl group-containing polyorganosiloxane (1) represented by the general formula (1) is referred to as “hydroxy group-containing polyorganosiloxane (1)” or “polyorganosiloxane (1)” and the general formula (2).
- the amino group-containing polyorganosiloxane (3) contained is referred to as “amino group-containing polyorganosiloxane (3)” or “polyorganosiloxane (3)”, respectively.
- the coating agent of the present invention is (A) the mass ratio of polyorganosiloxane (2) to amino group-containing polyorganosiloxane (3) is 0.7 to 3.0; and (b) the content of hydroxyl group-containing polyorganosiloxane (1) is poly It is characterized by being 2.4 to 5.5% by mass relative to the total mass of the organosiloxanes (1) to (3). Due to the composition, the coating agent of the present invention is excellent in film-forming property and excellent in adhesion to the surface of a substrate (eg, needle, catheter, cannula, three-way stopcock). Detachment from the substrate can be suppressed / prevented and has excellent durability. Moreover, the coating agent of this invention can reduce friction with a base material, and is excellent in the piercing property. The reason why the above effect can be achieved is unknown, but is estimated as follows. In addition, this invention is not limited by the following estimation.
- the present inventor has intensively studied about further improvement in durability and piercing characteristics of the coating agent described in Patent Document 1 on the base material. As a result, it was considered effective to improve the strength (film forming property) of the film by the coating agent for improving the durability. The present inventor has further intensively studied on improving the strength of the coating film (film forming property). As a result, it has been found that the features (a) and (b) described above are effective means. Specifically, in the hydroxyl group-containing polyorganosiloxane (1), hydroxyl groups at both ends are bonded to a substrate (for example, a hydroxyl group on the surface of a metal substrate) (forms a relatively long crosslinked structure) to form a film.
- a substrate for example, a hydroxyl group on the surface of a metal substrate
- the hydroxyl group-containing polyorganosiloxane (1) contributes to the adhesion to the substrate and the film-forming property.
- the polydiorganosiloxane (2) imparts lubricity to the coating (improves the piercing property) by the organosiloxane portion.
- the amino group-containing polyorganosiloxane (3) the polyorganosiloxane portion imparts lubricity (improves piercing properties), and the amino group is a substrate (for example, a hydroxyl group on the surface of a metal substrate). To form a relatively short cross-linked structure to form a film.
- amino group containing polyorganosiloxane (3) contributes to lubricity, adhesiveness with a base material, and film-forming property partially.
- the amino group-containing polyorganosiloxane (3) also contributes to the film formation to some extent.
- the component having an amino group bonded to the base material is densely present inside the polyorganosiloxane (3) instead of both ends, the strength of the film is higher in the polyorganosiloxane (3).
- the formability of the hydroxyl group-containing polyorganosiloxane (1) is higher. For this reason, like the said characteristic (b), the film formation property by the coating agent of this invention can be improved by containing a specific amount of hydroxyl-containing polyorganosiloxane (1).
- the strength of the film by the coating agent of this invention can be improved by containing the polyorganosiloxane (3) which contributes to film formation property by a specific ratio like the said characteristic (a). Due to the firmness of the coating film by the hydroxyl group-containing polyorganosiloxane (1) and the coating film by the polyorganosiloxane (3), the polydiorganosiloxane (2) is firmly held in the coating film, and the polydiorganosiloxane (2) is detached by friction. Can be suppressed and prevented, and durability can be improved. Since the hydroxyl group in the polyorganosiloxane (1) interacts with the hydroxyl group on the substrate surface, particularly the substrate surface, the adhesion to the substrate is also excellent.
- a medical device for example, a needle, a catheter, a cannula, a three-way stopcock
- the coating agent of this invention can reduce friction with a base material, and is excellent in the piercing property. For this reason, if the needle surface-treated with the coating agent of the present invention is used, the film (coating agent) is not peeled off from the needle surface even when it is used a plurality of times.
- the coating agent of this invention it can suppress and prevent that a film peels from the needle
- Preparation Example 1 (paragraph “0015”) of Patent Document 1, a silanol group-containing polydimethylsiloxane (polyorganosiloxane according to the present invention) is used as a raw material for preparing an amino group-containing polyorganosiloxane (3). (1)) is used. However, almost all of the polydimethylsiloxanes containing both terminal silanol groups react with ⁇ - [N- ( ⁇ -aminoethyl) amino] propylmethyldimethoxysilane, so that the coating agent of Patent Document 1 is polyorganosiloxane (1 ) (Substantially less than 2.4% by mass).
- the coating agent of the present invention imparts lubricity to the polydiorganosiloxane (2) and further to the organosiloxane portion of the amino group-containing polyorganosiloxane (3).
- the amino group-containing polyorganosiloxane (3) is in close contact with the base material via the amino group portion. Therefore, as described in the above feature (a), the presence of the polydiorganosiloxane (2) and the amino group-containing polyorganosiloxane (3) at a specific ratio maintains the adhesion to the substrate while maintaining the coating film. Lubricity can be improved and friction (puncture resistance) with the substrate can be reduced. For this reason, if the needle surface-treated with the coating agent of the present invention is used, the pain caused by the puncture on the patient can be further reduced.
- the coating agent of the present invention can improve durability and lubricity (puncture characteristics) when applied to a substrate. Moreover, the coating agent of this invention can achieve the favorable balance of lubricity, adhesiveness, and film formation property, when apply
- a medical device for example, a medical device that generates friction upon insertion into a living body, such as a needle, a catheter, or a cannula
- the film (coating agent) is not peeled off from the surface of the medical device or is small. Therefore, since high lubricity can be maintained, friction during use (puncture resistance) can be reduced, and as a result, pain given to the patient can be effectively reduced. Furthermore, by using the coating agent of this invention, it can suppress and prevent that a film peels from the medical device (base material) surface. Therefore, for example, even when a needle surface-treated with the coating agent of the present invention is inserted into an infusion bag, foreign matter (coating strip) is prevented / prevented from being mixed into the infusion bag, and this is a safety point of view. Is also preferable. Although the three-way stopcock is not inserted into the living body, the slidability of the operation part of the three-way stopcock can be maintained.
- X to Y indicating a range includes X and Y, and means “X or more and Y or less”.
- operations and physical properties are measured under conditions of room temperature (20 to 25 ° C.) / Relative humidity 40 to 50% RH.
- a medical device is a needle
- hook is demonstrated in detail below, this invention is not limited to the following form.
- the present invention can be similarly applied to other medical devices such as a catheter.
- the hydroxyl group-containing polyorganosiloxane (1) is represented by the following general formula (1).
- each structural unit may be the same or different.
- the coating agent of this invention may contain the hydroxyl-containing polyorganosiloxane (1) individually by 1 type, or may contain 2 or more types of hydroxyl-containing polyorganosiloxane (1).
- hydroxyl groups at both ends are bonded to a substrate (for example, hydroxyl group on the surface of a metal substrate) (forms a relatively long crosslinked structure) to form a film.
- a substrate for example, hydroxyl group on the surface of a metal substrate
- the coating agent of this invention containing a hydroxyl-containing polyorganosiloxane (1) is excellent in film forming property.
- the polydiorganosiloxane (2) and the amino group-containing polyorganosiloxane (3) can be firmly held in the film formed by the hydroxyl group-containing polyorganosiloxane (1) according to the present invention. Therefore, durability can be improved by using the coating agent of the present invention.
- the coating (coating agent) does not peel off from the needle surface even when the rubber plug is punctured a plurality of times. Therefore, since the needle surface-treated with the coating agent of the present invention can maintain high lubricity, friction during use (puncture resistance) is small, and pain to the patient can be effectively reduced. For example, even if the needle surface-treated with the coating agent of the present invention is inserted into an infusion bag, the film (coating agent) is peeled off from the needle surface, and foreign matter (film peeling material) is mixed into the infusion bag. It is preferable from the viewpoint of safety.
- the hydroxyl group-containing polyorganosiloxane (1) according to the present invention has hydroxyl groups (R 1 and R 1 ′ ) at both ends. Since this hydroxyl group interacts with the substrate, particularly the hydroxyl group of the substrate, it has excellent adhesion to the substrate. Therefore, adhesion with the base material is promoted together with the amino group present in the amino group-containing polyorganosiloxane (3).
- the content of the hydroxyl group-containing polyorganosiloxane (1) is 2.4 to 5 with respect to the total mass of the hydroxyl group-containing polyorganosiloxane (1), polydiorganosiloxane (2) and amino group-containing polyorganosiloxane (3). 0.5% by mass.
- the content of the polyorganosiloxane (1) is less than 2.4% by mass, the film-forming property is low, and the polydiorganosiloxane (2) and the amino group-containing polyorganosiloxane (3) cannot be sufficiently retained. Inferior in lubricity and durability (Comparative Example 3 below).
- the content of the hydroxyl group-containing polyorganosiloxane (1) is selected from the group consisting of hydroxyl group-containing polyorganosiloxane (1), polydiorganosiloxane (2), and amino group-containing poly
- it is 2.9 to 5.5% by mass, more preferably 3.2 to 5.5% by mass, and even more preferably 3.2 to 4% by mass with respect to the total mass of the organosiloxane (3).
- the said content means the total amount of a hydroxyl-containing polyorganosiloxane (1).
- R 1 and R 1 ′ represent a monovalent hydrocarbon group or a hydroxyl group (—OH).
- R 1 and R 1 ′ may be the same or different.
- the plurality of R 1 may be the same or different.
- the plurality of R 1 ′ may be the same or different.
- at least one of R 1 and at least one of R 1 ′ are a hydroxyl group (—OH).
- ' preferably has 1 or 2 is a hydroxyl group
- R 1 and R 1' 1 or 2 and / or R 1 in R 1 is a hydroxyl group one by one More preferably.
- the monovalent hydrocarbon group as R 1 and R 1 ′ is not particularly limited, but for example, a linear or branched alkyl group having 1 to 24 carbon atoms, a linear or branched alkyl group having 2 to 24 carbon atoms, and the like. Examples thereof include alkenyl groups, cycloalkyl groups having 3 to 9 carbon atoms, and aryl groups having 6 to 30 carbon atoms.
- the linear or branched alkyl group having 1 to 24 carbon atoms is not particularly limited, and examples thereof include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group, sec-butyl group, tert-butyl group, n-pentyl group, isopentyl group, tert-pentyl group, neopentyl group, 1,2-dimethylpropyl group, n-hexyl group, isohexyl group, 1,3-dimethylbutyl group, 1-isopropylpropyl group, 1,2-dimethylbutyl group, n-heptyl group, 1,4-dimethylpentyl group, 3-ethylpentyl group, 2-methyl-1-isopropylpropyl group, 1-ethyl-3-methylbutyl Group, n-octyl group,
- the linear or branched alkenyl group having 2 to 24 carbon atoms is not particularly limited, and examples thereof include a vinyl group, 1-propenyl group, 2-propenyl group (allyl group), isopropenyl group, and 1-butenyl group.
- 2-butenyl group, 3-butenyl group 1-pentenyl group, 2-pentenyl group, 3-pentenyl group, 1-hexenyl group, 2-hexenyl group, 3-hexenyl group, 1-heptenyl group, 2-heptenyl group 5-heptenyl group, 1-octenyl group, 3-octenyl group, 5-octenyl group, dodecenyl group, octadecenyl group and the like.
- the cycloalkyl group having 3 to 9 carbon atoms is not particularly limited, and examples thereof include a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, and a cyclooctyl group.
- the aryl group having 6 to 30 carbon atoms is not particularly limited.
- R 1 and R 1 ′ are preferably straight-chain or branched alkyl groups having 1 to 16 carbon atoms from the viewpoint of more improving lubricity, compatibility with solvents, and the like.
- the straight chain or branched alkyl group having 8 is more preferable, the straight chain or branched alkyl group having 1 to 4 carbon atoms is still more preferable, and the methyl group is particularly preferable.
- the “compatibility” refers to mutual solubility between different kinds of molecules, and means easy mixing at the molecular level.
- R 2 represents a monovalent hydrocarbon group.
- each R 2 existing in one structural unit may be the same or different. Further, when there are a plurality of structural units, each structural unit may be the same or different. Since the monovalent hydrocarbon group as R 2 is the same as defined in R 1 and R 1 ′ above, description thereof is omitted here.
- R 2 is preferably a linear or branched alkyl group having 1 to 16 carbon atoms, from the viewpoints of improving lubricity, improving durability, compatibility with solvents, and the like. A branched alkyl group is more preferable, a linear or branched alkyl group having 1 to 4 carbon atoms is still more preferable, and a methyl group is particularly preferable.
- one of R 1 and R 1 ′ is a hydroxyl group, and the remaining R 1 and R 1 ′ are each independently selected from 1 to 4 linear or branched alkyl groups, and each R 2 is independently a linear or branched alkyl group having 1 to 4 carbon atoms.
- one of R 1 and R 1 ′ is a hydroxyl group, the remaining R 1 and R 1 ′ are a methyl group, and R 2 is a methyl group It is a group.
- M is an integer of 1000 to 30000, preferably an integer of 5000 to 20000, and more preferably 10,000 to 15000. If it is the above ranges, polyorganosiloxane (1) can exhibit sufficient film formation.
- the molecular weight of the hydroxyl group-containing polyorganosiloxane (1) is not particularly limited, but the weight average molecular weight is preferably 10,000 to 2,000,000, more preferably 100,000 to 1,050,000. Is more preferably 100,000 to 1,000,000, and particularly preferably 500,000 to 1,000,000.
- a weight average molecular weight means the value calculated
- the polydiorganosiloxane (2) according to the present invention has the following general formula (2):
- the polydiorganosiloxane (2) is a polydiorganosiloxane having a triorganosilyl group at the end of the molecular chain and containing no amino group in the molecule as shown in the above structure. And does not contain hydrolyzable groups.
- the polydiorganosiloxane (2) imparts lubricity to the film formed by the hydroxyl group-containing polyorganosiloxane (1) or the amino group-containing polyorganosiloxane (3) by the organosiloxane portion. For this reason, the coating film formed by the presence of the polydiorganosiloxane (2) can exhibit high lubricity (the piercing ease and the piercing resistance reducing effect). When a plurality of structural units of the formula: —Si (R 5 ) 2 O— are present, each structural unit may be the same or different. Furthermore, the coating agent of this invention may contain polydiorganosiloxane (2) individually by 1 type, or may contain 2 or more types of polydiorganosiloxane (2).
- the coating agent of the present invention contains polydiorganosiloxane (2) in such an amount that the mass ratio with respect to amino group-containing polyorganosiloxane (3) is 0.7 to 3.0.
- the mass ratio of the polydiorganosiloxane (2) to the polyorganosiloxane (3) is less than 0.7, the ratio of the polydiorganosiloxane (2) is too small to provide sufficient lubricity.
- the mass ratio of the polydiorganosiloxane (2) to the polyorganosiloxane (3) exceeds 3.0, the ratio of the polyorganosiloxane (3) is too small and the adhesiveness is poor. Cannot be granted.
- the mass ratio of the polydiorganosiloxane (2) to the amino group-containing polyorganosiloxane (3) is preferably 0.9 to 2.5, more preferably 1. It is 1 to 2.4, even more preferably 1.1 to 2.0, and particularly preferably 1.5 to 2.0.
- the content of the polydiorganosiloxane (2) is not particularly limited as long as the mass ratio with respect to the amino group-containing polyorganosiloxane (3) is satisfied.
- the content of polydiorganosiloxane (2) is the hydroxyl group-containing polyorganosiloxane (1), polydiorganosiloxane (2) and amino group-containing polyorgano.
- the said content means the total amount of polydiorganosiloxane (2).
- R 4 and R 5 represent a monovalent hydrocarbon group.
- the plurality of R 4 may be the same or different.
- the plurality of R 5 may be the same or different. Since the monovalent hydrocarbon group as R 4 and R 5 is the same as the definition in the general formula (1), the description is omitted here.
- the monovalent hydrocarbon group as R 4 and R 5 is preferably a linear or branched alkyl group having 1 to 16 carbon atoms.
- a linear or branched alkyl group having 8 to 8 carbon atoms is more preferable, a linear or branched alkyl group having 1 to 4 carbon atoms is still more preferable, and a methyl group is particularly preferable.
- R 4 and R 5 are each independently a linear or branched alkyl group having 1 to 4 carbon atoms. According to a more preferred embodiment of the present invention, in the general formula (2), R 4 and R 5 are methyl groups.
- n is an integer of 8 to 1000, preferably an integer of 10 to 200, more preferably 20 to 100, and particularly preferably 30 to 50. If it is n as mentioned above, polydiorganosiloxane (2) will exhibit sufficient lubricity, and can reduce friction (puncture resistance) with a base material more. Therefore, the molecular weight of the polydiorganosiloxane (2) is not particularly limited, but the weight average molecular weight is preferably 500 to 7000, more preferably 1500 to 5000, and particularly preferably 2000 to 4000.
- polydiorganosiloxane (2) examples include polydimethylsiloxane, polydiethylsiloxane, polydipropylsiloxane, polydiisopropylsiloxane, polymethylethylsiloxane, polymethylpropylsiloxane, polymethylisopropylsiloxane, polyethyl Examples include propylsiloxane and polyethylisopropylsiloxane. Among these, considering lubricity (piercing characteristics) and the like, polydimethylsiloxane and polydiethylsiloxane are preferable, and polydimethylsiloxane is more preferable.
- amino group-containing polyorganosiloxane (3) The amino group-containing polyorganosiloxane (3) according to the present invention has the following general formula (3):
- the amino group-containing polyorganosiloxane (3) according to the present invention interacts with the hydroxyl group present on the substrate, particularly the substrate surface, via the amino group (substituent “A” in the general formula (3)). Can be bonded (adhered) to the substrate. Further, the organosiloxane moiety (—Si (R 7 ) 2 O—) present in the amino group-containing polyorganosiloxane (3) according to the present invention imparts lubricity (easy to pierce). When there are two or more structural units of the formula: —Si (R 7 ) 2 O— (p is 2 or more), each structural unit may be the same or different. .
- each structural unit may be the same or different. There may be.
- the coating agent of this invention may contain amino group containing polyorganosiloxane (3) individually by 1 type, or may contain 2 or more types of amino group containing polyorganosiloxane (3).
- the content of the amino group-containing polyorganosiloxane (3) is not particularly limited as long as the mass ratio with the polydiorganosiloxane (2) is satisfied.
- the content of amino group-containing polyorganosiloxane (3) is the hydroxyl group-containing polyorganosiloxane (1), polydiorganosiloxane (2) and amino group.
- it is 24 to 57% by mass, more preferably 28 to 54% by mass, still more preferably 32 to 54% by mass, and further preferably 32 to 45% by mass, based on the total mass of the polyorganosiloxane (3) contained.
- Particularly preferred is 32 to 38% by mass.
- R 6 is a monovalent hydrocarbon group or —OR 9 group.
- the plurality of R 6 may be the same or different.
- R 6 is preferably a linear or branched alkyl group having 1 to 16 carbon atoms, from the viewpoints of improving lubricity and durability, improving compatibility with solvents, etc., and having 1 to 8 carbon atoms.
- linear or branched alkyl groups having 1 to 4 carbon atoms are even more preferable, and methyl groups are particularly preferable.
- R 9 independently represents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 4 carbon atoms.
- the plurality of —OR 9 groups may be the same or different from each other.
- the monovalent hydrocarbon group is not particularly limited, but for example, a linear or branched alkyl group having 1 to 4 carbon atoms (methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group).
- a methyl group and an ethyl group are preferable from the viewpoint of more improving lubricity and adhesion to a substrate.
- R 7 and R 8 represent a monovalent hydrocarbon group.
- each R 7 and wherein the organosiloxane moiety (-Si (R 7) 2 O- ): R 8 in -Si (R 8) (A) O- the building blocks can be in a respectively identical Or it may be different.
- the monovalent hydrocarbon group is not particularly limited, but has the same definition as the above-described substituent “R 6 ”, that is, the same as the definition in the above general (1), and thus the description thereof is omitted here. To do.
- a linear alkyl group having 1 to 4 carbon atoms is preferable, and a methyl group is particularly preferable, from the viewpoints of improving lubricity and availability.
- A represents an amino group-containing group.
- each A may be the same or different.
- the amino group-containing group is not particularly limited, but for example, ⁇ -aminoethyl group, ⁇ -aminopropyl group, N- ( ⁇ -aminoethyl) aminomethyl group, ⁇ - (N- ( ⁇ -aminoethyl) amino) A propyl group etc. are mentioned.
- ⁇ -aminopropyl group N- ( ⁇ -aminoethyl) aminomethyl group or ⁇ - (N- ( ⁇ -aminoethyl) is preferred from the viewpoints of improving lubricity and adhesion to the substrate.
- Amino) propyl group is preferred, ⁇ - (N- ( ⁇ -aminoethyl) amino) propyl group, ⁇ -aminopropyl group is more preferred, and ⁇ - (N- ( ⁇ -aminoethyl) amino) propyl group is particularly preferred. preferable.
- R 6 is each independently a linear or branched alkyl group having 1 to 4 carbon atoms
- R 7 and R 8 are Each independently represents a linear or branched alkyl group having 1 to 4 carbon atoms
- A represents a ⁇ -aminopropyl group, an N- ( ⁇ -aminoethyl) aminomethyl group or a ⁇ - (N- ( ⁇ -Aminoethyl) amino) propyl group.
- R 6 is a methyl group
- R 7 and R 8 are methyl groups
- A is ⁇ - (N- ( ⁇ -aminoethyl) Amino) propyl group.
- q is an integer of 1 to 100, preferably an integer of 3 to 20, more preferably an integer of 3 to 15, and particularly preferably an integer of 4 to 10. It is.
- p: q 10 to 100: 1, more preferably 20 to 80: 1, and particularly preferably 30 to 50: 1. If p and q are as described above, a sufficient number of amino groups are present in the amino group-containing polyorganosiloxane (3), so that sufficient adhesion to the substrate can be achieved.
- p is not particularly limited as long as the above relationship is satisfied, but it is preferably 10 to 800, more preferably 60 to 400, and particularly preferably 100 to 300.
- the molecular weight of the amino group-containing polyorganosiloxane (3) is not particularly limited, but the weight average molecular weight is preferably 5000 to 50000, more preferably 7500 to 30000, and particularly preferably 10,000 to 20000.
- the method for producing the amino group-containing polyorganosiloxane (3) according to the present invention is not particularly limited.
- the amino group-containing polyorganosiloxane (3) according to the present invention can be produced in the same manner as described in known literatures such as JP-A-7-178159 or appropriately modified.
- the coating agent of the present invention essentially contains the hydroxyl group-containing polyorganosiloxane (1), polydiorganosiloxane (2) and amino group-containing polyorganosiloxane (3).
- the coating agent of the present invention may be composed only of the polyorganosiloxanes (1) to (3) or may further contain other components in addition to the above.
- other components that can be used are not particularly limited, and include components that are usually added to known coating agents, particularly coating agents for coating medical devices (eg, injection needles, catheters, cannulas). . More specifically, a condensation reaction catalyst, an antioxidant, a dye, a surfactant, a slip agent, a primer and the like can be mentioned.
- the content of the other components is not particularly limited as long as the effects of the polyorganosiloxanes (1) to (3) are not impaired, but the content of the other components is about 0. About 1 to 5% by mass.
- the coating agent of the present invention may contain an organic solvent.
- an organic solvent such as chlorofluorocarbon solvents such as 1,1,2-trichloro-1,2,2-trifluoroethane, chlorine-containing hydrocarbons such as methylene chloride (dichloromethane) and chloroform, fats such as butane, pentane and hexane
- Aromatic hydrocarbons such as aromatic hydrocarbons, benzene, toluene, xylene, esters such as ethyl acetate and butyl acetate, water-insoluble ketones such as methyl isobutyl ketone, ethers such as tetrahydrofuran (THF), butyl ether, dioxane
- examples thereof include aliphatic alcohols such as methanol, ethanol and isopropanol, volatile siloxanes such as he
- organic solvents may be used alone or as a mixed solvent in which two or more of these solvents are combined.
- the amount of the organic solvent used is not particularly limited, but considering the ease of coating, the total concentration of polyorganosiloxanes (1) to (3) is 5 to 80% by mass, preferably 57 to 77% by mass. It is preferable that it is a grade.
- the coating agent may be further diluted with the organic solvent. In this case, it is preferable to dilute with an organic solvent so that the total concentration of the polyorganosiloxanes (1) to (3) is 1 to 10% by mass, more preferably 3 to 7% by mass.
- the production method of the coating agent of the present invention is not particularly limited, and the above-mentioned hydroxyl group-containing polyorganosiloxane (1), polydiorganosiloxane (2) and amino group-containing polyorganosiloxane (3), and, if necessary, the above-mentioned other A method of mixing the components in the above-described composition and stirring and mixing can be used.
- an organic solvent thereby, it becomes possible to actually easily coat medical devices (for example, needles).
- limit especially as an organic solvent The organic solvent described as said other component is used preferably.
- the stirring and mixing conditions are not particularly limited.
- the stirring / mixing temperature is preferably 25 to 130 ° C, more preferably 50 to 100 ° C.
- the stirring / mixing time is preferably 0.5 to 5 hours, more preferably 1 to 3 hours.
- the hydroxyl group-containing polyorganosiloxane (1), polydiorganosiloxane (2) and amino group-containing polyorganosiloxane (3), and if necessary, the above other components react undesirably. Can be mixed uniformly without waking up.
- the coating agent of the present invention can improve the lubricity and durability of the object. For this reason, the coating agent of this invention can be used especially suitably in the field
- the medical device may be used for any application as long as the above characteristics are required.
- a catheter, a cannula, a needle, a three-way stopcock, a guide wire and the like can be mentioned.
- the coating agent of the present invention can be preferably used for catheters, cannulas, needles, three-way stopcocks, and can be preferably used for needles, particularly medical needles (for example, injection needles). That is, the preferable form of this invention provides the needle
- the medical needle for example, injection needle
- the puncture resistance (maximum resistance value) after the needle is punctured 10 times into the rubber stopper is smaller.
- the puncture resistance (maximum resistance value) is preferably less than 45 mN, and more preferably 41 mN or less.
- the lower limit of the puncture resistance (maximum resistance value) after the needle has been punctured 10 times into the rubber stopper is preferably as low as possible, and is not particularly limited, and is 0 mN, but usually 10 mN or more is acceptable.
- the puncture resistance (maximum resistance value) is measured by the method described in the examples.
- the present invention also provides a method for producing a needle (medical needle), which comprises curing the surface of the needle (medical needle) with the coating agent of the present invention.
- the medical device (as the base material) may be formed of any material, and the same material as the conventional one can be used.
- the medical device is a needle
- the present invention is not limited to the following mode, and a material constituting a desired medical device is used instead of the material constituting the needle. Can be applied.
- the needle may be formed of any material, and materials similar to those normally used for needles, particularly medical needles (for example, injection needles), such as metal materials and polymer materials, can be used.
- the metal material is not limited to the following, but various stainless steels (SUS) such as SUS304, SUS316L, SUS420J2, and SUS630, gold, platinum, silver, copper, nickel, cobalt, titanium, iron, aluminum, tin, or nickel- Various alloys such as titanium (Ni-Ti) alloy, nickel-cobalt (Ni-Co) alloy, cobalt-chromium (Co-Cr) alloy, zinc-tungsten (Zn-W) alloy, metal-ceramic composites, etc. Is mentioned.
- the said metal material may be used independently or may use 2 or more types together.
- the metal material is bonded to the hydroxyl group on the surface and the amino group of the amino group-containing polyorganosiloxane (3) constituting the coating agent or the hydroxyl group of the hydroxyl group-containing polyorganosiloxane (1).
- hook formed with the said material is excellent in adhesiveness with the film by the coating agent of this invention.
- the polymer material include, but are not limited to, polyamide resins such as nylon 6, nylon 11, nylon 12, nylon 66 (all are registered trademarks), linear low density polyethylene (LLDPE), and low density polyethylene (LDPE).
- Polyolefin resins such as polyethylene resins such as high density polyethylene (HDPE) and polypropylene resins, modified polyolefin resins, epoxy resins, urethane resins, diallyl phthalate resins (allyl resins), polycarbonate resins, fluororesins, amino resins (urea resins, (Melamine resin, benzoguanamine resin), polyester resin, styrene resin, acrylic resin, polyacetal resin, vinyl acetate resin, phenol resin, vinyl chloride resin, silicone resin (silicon resin), polyether resin, polyethylene Such as de resin and the like.
- the above polymer materials may be used alone or in combination of two or more.
- the substrate surface-treated with the coating agent of the present invention is easily functionalized with a functional group such as an amino group or a hydroxyl group of the coating agent of the present invention.
- a base material having is preferred.
- the base material is a metal material
- the metal material is preferable because of its high adhesion to the coating agent of the present invention because its surface is covered with an oxide film and has a hydroxyl group and the like.
- the coating agent of the present invention is provided by imparting functional groups such as hydroxyl groups to the base material by plasma treatment or the like. The adhesion between the substrate and the substrate can be increased.
- the surface treatment method using the coating agent of the present invention is not particularly limited, but it is preferable that the curing treatment is performed by heating or irradiating a coating film containing the coating agent.
- the present invention is a medical treatment comprising forming a coating film containing the coating agent of the present invention on the surface of a medical device (preferably a needle), and curing the coating film by heating or irradiating with radiation.
- a method of manufacturing an instrument preferably a needle.
- the surface treatment method by the coating agent of this invention performs a hardening process by heating and humidifying the coating film containing a coating agent.
- the present invention provides a medical device (preferably having a coating film containing the coating agent of the present invention on the surface of a medical device (preferably a needle), and curing the coating film by heating and humidification.
- a method for manufacturing a needle is also provided.
- the formation method of the coating film containing a coating agent is not restrict
- the dipping method dipping method
- coating (coating) methods can do.
- the coating agent coated on the needle surface the penetration of the coating agent into the needle may be prevented by sending a gas such as air into the needle. Thereby, needle clogging due to the coating agent can be prevented.
- the coating agent coated on the base material may be volatilized by natural drying, air drying, heating or the like, if necessary, and in some cases, the coating agent may be precured at the same time.
- a coating film may be formed on a desired surface portion of the needle surface. If it is difficult to immerse only a part of the needle surface in the coating agent, the surface of the needle that does not need to be formed in advance must be protected (covered) with an appropriate removable member or material. Etc.), the needle is dipped in a coating agent, and the coating agent is coated on the surface of the needle, and then the protective member (material) on the surface of the needle that does not need to form a coating film is removed.
- a coating film can be formed on a desired surface portion of the surface.
- a coating film can be formed by appropriately using conventionally known methods.
- another coating method for example, an application method or a spray method
- the dipping method can be used because both the outer surface and the inner surface can be coated at once. ) Is preferably used.
- the coating film After forming the coating film containing the coating agent as described above, the coating film is cured.
- the curing treatment (surface treatment) method for heating the coating film containing the coating agent is not particularly limited.
- examples of the curing treatment (surface treatment) include a heat treatment under normal pressure (atmospheric pressure), a heat treatment under pressurized steam, and a heat treatment using ethylene oxide gas (EOG). .
- the heat treatment conditions in the case of heat treatment under normal pressure (atmospheric pressure) are not particularly limited as long as the desired effects (for example, lubricity and durability) can be achieved. Absent.
- the heating temperature is preferably 50 to 150 ° C, more preferably 60 to 130 ° C.
- the heating time is preferably 2 to 48 hours, more preferably 15 to 30 hours.
- the amino group-containing polyorganosiloxane (3) (amino group) and the hydroxyl group-containing polyorganosiloxane (1) (hydroxyl group) can be firmly bonded to the substrate. Further, the hydroxyl group-containing polyorganosiloxane (1) (hydroxyl group) can react with the substrate surface to form a firm film.
- a heating means apparatus
- an oven, a dryer, a microwave heating apparatus etc. can be utilized, for example.
- the heat treatment conditions (reaction conditions) in the case of heat treatment under pressurized steam are not particularly limited as long as the desired effects (for example, lubricity and durability) can be achieved.
- the heating temperature is preferably 100 to 135 ° C, more preferably 105 to 130 ° C.
- the heating time is preferably 1 to 120 minutes, more preferably 10 to 60 minutes.
- the pressure may be appropriately selected in consideration of desired reactivity (for example, lubricity, durability, and binding property to the substrate). Under such reaction conditions, the amino group-containing polyorganosiloxane (3) (amino group) and the hydroxyl group-containing polyorganosiloxane (1) (hydroxyl group) can be firmly bonded to the substrate.
- the hydroxyl group-containing polyorganosiloxane (1) (hydroxyl group) can react with the substrate surface to form a firm film.
- the needle can be sterilized at the same time.
- a heating means apparatus
- a Koch sterilization pot, an autoclave, etc. can be utilized, for example.
- the heat treatment conditions in the case of heat treatment using ethylene oxide gas (EOG) are also particularly limited as long as the desired effects (for example, lubricity and durability) can be achieved. is not.
- the heating temperature is preferably 40 to 135 ° C, more preferably 45 to 80 ° C.
- the heating time is preferably 1 to 300 minutes, more preferably 20 to 250 minutes.
- the pressure may be appropriately selected in consideration of desired reactivity (for example, lubricity, durability, and binding property to the substrate).
- the amino group-containing polyorganosiloxane (3) (amino group) and the hydroxyl group-containing polyorganosiloxane (1) (hydroxyl group) can be firmly bonded to the substrate. Further, the hydroxyl group-containing polyorganosiloxane (1) (hydroxyl group) can react with the substrate surface to form a firm film.
- the needle can be sterilized at the same time.
- the radiation is not particularly limited and may be gamma rays ( ⁇ rays), electron beams, neutron rays, or X-rays. Of these, gamma rays or electron beams are preferred.
- Radiation irradiation conditions are not particularly limited as long as desired conditions (for example, lubricity and durability) can be achieved.
- conditions such as the dose and irradiation time are not particularly limited, but usually the ⁇ dose is 10 to 50 kGy, preferably 15 to 25 kGy.
- the amino group-containing polyorganosiloxane (3) (amino group) and the hydroxyl group-containing polyorganosiloxane (1) (hydroxyl group) can be firmly bonded to the substrate. Further, the hydroxyl group-containing polyorganosiloxane (1) (hydroxyl group) can react with the substrate surface to form a firm film.
- the hydroxyl group-containing polydimethylsiloxane (1) is “compound 1”
- the polydimethylsiloxane (2) is “compound 2”
- the amino group-containing polyorganosiloxane (3) is “compound 3”. Respectively.
- the piercing resistance was measured according to the following method.
- concentration of a silicone component says the total density
- a tensile tester (Autograph AG-1kNIS (manufactured by Shimadzu Corporation) is used to immerse an 18G injection needle (needle part is made of SUS304) at a speed of 1000 mm / min.
- the injection needle was raised. It was naturally dried at room temperature for 2 hours. Further, the injection needle was heated in an oven at 120 ° C. for 2 hours for curing treatment.
- the injection needles 1 to 9 were coated with the coating agent 1 to 9 on the surface, and the injection needles 1 to 3 were coated with the coating coating 1 to 3 on the surface, respectively. Called.
- a tensile tester Autograph AG-1kNIS (manufactured by Shimadzu Corporation) is used to immerse an 18G injection needle (needle part is made of SUS304) at a speed of 1000 mm / min.
- the injection needle was raised. It was naturally dried at room temperature for 2 hours. Furthermore, this injection needle was subjected to a curing treatment at 50 ° C. for 210 minutes using ethylene oxide gas (EOG).
- EOG ethylene oxide gas
- the injection needle sterilized EOG (ethylene oxide gas).
- the injection needles 10 to 18 were coated with the coating agent 1 to 9 on the surface, and the injection needles 10 to 18 were coated with the comparative coating agent 1 to 3 on the surface. Called.
- a tensile tester (Autograph AG-1kNIS (manufactured by Shimadzu Corporation) is used to immerse an 18G injection needle (needle part is made of SUS304) at a speed of 1000 mm / min.
- the injection needle was raised. It was naturally dried at room temperature for 2 hours. Further, the injection needle was cured for 20 minutes under high-pressure steam at 121 ° C. In addition, by the said process, the injection needle was sterilized by high pressure steam (autoclave).
- the injection needles 19 to 27 were formed with a coating film on the surface with the coating agents 1 to 9, and the injection needles formed with a coating film on the surface with the comparative coating agents 1 to 3 were compared with the comparison injection needles 7 to 9, respectively. Called.
- a tensile tester (Autograph AG-1kNIS (manufactured by Shimadzu Corporation) is used to immerse an 18G injection needle (needle part is made of SUS304) at a speed of 1000 mm / min.
- the injection needle was raised. It was naturally dried at room temperature for 2 hours. Further, the injection needle was irradiated with 20 kGy of ⁇ rays to perform a curing process. Note that, by the above treatment, the injection needle was subjected to radiation sterilization.
- the injection needles 28 to 36 formed with a coating film on the surface with the coating agents 1 to 9 and the injection needles formed with the coating film on the surface with the comparison coating agents 1 to 3 and the comparison injection needles 10 to 12, respectively. Called.
- FIG. 1 and FIG. Specifically, the sliding resistance value (puncture resistance value) (mN) at the 0th and 10th punctures of the injection needles 1 to 9 and the comparison injection needles 1 to 3 (coating 1: heated at 105 ° C. for 24 hours)
- FIGS. 1A and 2A respectively.
- FIG. 2A an enlarged view in which only the result of the sliding resistance value (puncture resistance value) (mN) at the time of 10 punctures of the injection needles 3 to 9 (coating 1: heated at 105 ° C. for 24 hours) is extracted. It is written together.
- FIG. 1B The results of sliding resistance values (piercing resistance values) (mN) when the needles 10 to 18 and the comparative needles 4 to 6 (coating 2: EOG treatment) were punctured 0 and 10 times are shown in FIG. 1B and FIG. Each is shown in 2B. Further, the results of the sliding resistance value (puncture resistance value) (mN) at the time of puncturing 0 times and 10 times of the injection needles 19 to 27 and the comparative injection needles 7 to 9 (coating 3: high-pressure steam treatment) are shown in FIG. Each is shown in FIG. 2C. 1 and 2, the vertical axis indicates the sliding resistance value (unit: mN). Moreover, a horizontal axis shows each Example and a comparative example.
- the injection needle of the present invention showed a sliding resistance value (puncture resistance value) equivalent to or lower than that of the comparative injection needle at the time of zero puncture, but the comparative injection at the time of 10 punctures.
- the sliding resistance value (puncture resistance value) was significantly lower than that of the needle. Therefore, according to the injection needle of the present invention, it is considered that durability can be improved.
- the injection needles (injection needles 4 to 7) having a coating formed on the surface with the coating agents 4 to 7 have a particularly remarkable effect of reducing friction (puncture resistance) and improving durability during puncture. It is considered that it can be demonstrated.
- the same result as above is also observed with other injection needles (injection needles 13 to 16, 22 to 25) having a coating formed on the surface with coating agents 4 to 7.
- the sliding resistance value (puncture resistance value) (mN) after the injection needles 28 to 36 are punctured 0 times into the rubber stopper is the comparison injection needle 11.
- the result was that it was significantly lower than ⁇ 12 and almost the same as that of the comparative injection needle 10.
- the sliding resistance value (piercing resistance value) (mN) after the injection needles 29 to 35 were punctured 10 times into the rubber plugs was significantly lower than the comparative injection needles 10 to 12 ( Puncture resistance value).
- the injection needles 31 to 34 having a coating formed on the surface with the coating agents 4 to 7 are particularly remarkable in the effect of reducing the friction (puncture resistance) during puncture and the effect of improving the durability, and the same results as above were obtained. .
- the injection needle of the present invention it is considered that durability and piercing characteristics can be improved.
- the coating agent of the present invention can exhibit lubricity and durability similar to those described above for medical devices other than needles.
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Abstract
Description
R2は、それぞれ独立して、一価の炭化水素基を表し、
mは、1000~30000の整数である、
で示される水酸基含有ポリオルガノシロキサン(1)と、
(2)下記一般式(2):
nは、8~1000の整数である、
で示される、ポリジオルガノシロキサン(2)と、
(3)下記一般式(3):
R7およびR8は、それぞれ独立して、一価の炭化水素基を表し、
Aは、それぞれ独立して、アミノ基含有基を表し、
p:q=5~100:1であり、および
qは、1~100の整数である、
で示される、1分子中に少なくとも1個のアミノ基を含有するアミノ基含有ポリオルガノシロキサン(3)と、
を含むコーティング剤であって、
前記ポリジオルガノシロキサン(2)は、前記アミノ基含有ポリオルガノシロキサン(3)に対する質量比が0.7~3.0の割合で含まれ、
前記水酸基含有ポリオルガノシロキサン(1)は、前記水酸基含有ポリオルガノシロキサン(1)、ポリジオルガノシロキサン(2)およびアミノ基含有ポリオルガノシロキサン(3)の合計質量に対して、2.4~5.5質量%の割合で含まれる、コーティング剤によって達成できる。
(1)下記一般式(1):
R2は、それぞれ独立して、一価の炭化水素基を表し、
mは、1000~30000の整数である、
で示される水酸基含有ポリオルガノシロキサン(1)と、
(2)下記一般式(2):
nは、8~1000の整数である、
で示される、ポリジオルガノシロキサン(2)と、
(3)下記一般式(3):
R7およびR8は、それぞれ独立して、一価の炭化水素基を表し、
Aは、それぞれ独立して、アミノ基含有基を表し、
p:q=5~100:1であり、および
qは、1~100の整数である、
で示される、1分子中に少なくとも1個のアミノ基を含有するアミノ基含有ポリオルガノシロキサン(3)と、
を含み、
前記ポリジオルガノシロキサン(2)は、前記アミノ基含有ポリオルガノシロキサン(3)に対する質量比が0.7~3.0の割合で含まれ、
前記水酸基含有ポリオルガノシロキサン(1)は、前記水酸基含有ポリオルガノシロキサン(1)、ポリジオルガノシロキサン(2)およびアミノ基含有ポリオルガノシロキサン(3)の合計質量に対して、2.4~5.5質量%の割合で含まれる。上記構成を有するコーティング剤は、強固な被膜を形成し、また、基材(例えば、針、カテーテル、カニューレ等の医療機器)表面との密着性に優れるため、コーティングの基材からの剥離を抑制・防止でき、耐久性に優れる。また、本発明のコーティング剤は潤滑性に優れる。このため、本発明のコーティング剤で表面処理された針は、穿刺時の摩擦(穿刺抵抗)を低減して、刺通特性を向上できる。
(a)ポリオルガノシロキサン(2)のアミノ基含有ポリオルガノシロキサン(3)に対する質量比が0.7~3.0である;および
(b)水酸基含有ポリオルガノシロキサン(1)の含有量がポリオルガノシロキサン(1)~(3)の合計質量に対して、2.4~5.5質量%である、ことを特徴とする。当該組成により、本発明のコーティング剤は、被膜形成性に優れ、基材(例えば、針、カテーテル、カニューレ、三方活栓)表面との密着性に優れるため、コーティング剤による表面処理物(被膜)の基材からの剥離を抑制・防止でき、耐久性に優れる。また、本発明のコーティング剤は、基材との摩擦を低減でき、刺通特性に優れる。上記効果が達成しうる理由は不明であるが、以下のように推測される。なお、本発明は、下記推測によって限定されない。
本発明に係る水酸基含有ポリオルガノシロキサン(1)は、下記一般式(1)で示される。なお、式:-Si(R2)2O-の構成単位が複数存在する場合には、各構成単位は同一であってもまたは異なるものであってもよい。また、本発明のコーティング剤は、水酸基含有ポリオルガノシロキサン(1)を1種単独で含んでも、または2種以上の水酸基含有ポリオルガノシロキサン(1)を含んでもよい。
本発明に係るポリジオルガノシロキサン(2)は、下記一般式(2):
本発明に係るアミノ基含有ポリオルガノシロキサン(3)は、下記一般式(3):
上記本発明のコーティング剤は、対象物の潤滑性及び耐久性を向上させることができる。このため、本発明のコーティング剤は、上記特性の要求が高い医療機器(例えば、針、カテーテル、カニューレ)の分野で特に好適に使用できる。したがって、本発明は、本発明のコーティング剤の硬化処理により表面処理してなる医療機器をも提供する。また、本発明は、医療機器表面を本発明のコーティング剤で硬化処理することを有する、医療機器の製造方法をも提供する。
以下のようにして、下記構造の両末端アミノ基含有ポリオルガノシロキサン(4)を、特開平7-178159号公報の調製例1と同様にして合成した。
上記合成例1で合成した両末端アミノ基含有ポリオルガノシロキサン(4) 120質量部、下記構造のポリジメチルシロキサン(2)(重量平均分子量=約3000、一般式(2)中のn=38) 730質量部、下記構造のアミノ基含有ポリオルガノシロキサン(3)(重量平均分子量=約15000) 660質量部、トルエン 1700質量部およびエタノール200質量部を加えて、85℃で2時間撹拌して、比較コーティング剤1を得た。
下記構造の水酸基含有ポリジメチルシロキサン(1)(重量平均分子量=約900,000)、下記構造のポリジメチルシロキサン(2)(重量平均分子量=約3000、一般式(2)中のn=38)、下記構造のアミノ基含有ポリオルガノシロキサン(3)(重量平均分子量=約15000)、トルエンおよびエタノールを、下記表1に示される組成となるように加えて、85℃で2時間撹拌・混合して、コーティング剤1~9(実施例1~9)および比較コーティング剤2~3(比較例2~3)を、それぞれ、得た。なお、下記表1において、水酸基含有ポリジメチルシロキサン(1)を「化合物1」と、ポリジメチルシロキサン(2)を「化合物2」と、およびアミノ基含有ポリオルガノシロキサン(3)を「化合物3」と、それぞれ、称する。
(注射針へのコーティング1:加熱)
各コーティング剤に、シリコーン成分の濃度が約5質量%となるようにジクロロメタンを加えて希釈し、無色透明のコーティング液を得た。なお、シリコーン成分の濃度は、実施例1~9及び比較例2~3では、水酸基含有ポリジメチルシロキサン(1)、ポリジメチルシロキサン(2)及びアミノ基含有ポリオルガノシロキサン(3)のコーティング液における合計濃度をいう。また、比較例1では、シリコーン成分の濃度は、両末端アミノ基含有ポリオルガノシロキサン(4)、ポリジメチルシロキサン(2)及びアミノ基含有ポリオルガノシロキサン(3)のコーティング液における合計濃度をいう。
上記(注射針へのコーティング1:加熱)と同様にして、コーティング液を調製した。
上記(注射針へのコーティング1:加熱)と同様にして、コーティング液を調製した。
上記(注射針へのコーティング1:加熱)と同様にして、コーティング液を調製した。
注射針1~36および比較注射針1~12について、それぞれ、引張試験機(オートグラフAG-1kNIS 島津製作所製)を用い、厚さ50μmのポリエチレンフィルムに角度90度、速度100mm/minで穿刺したときの摺動抵抗値(刺通抵抗値)(mN)を測定した。具体的には、注射針の移動量に対する摺動抵抗値を時系列データで取得した。また、その測定値より、最大抵抗値(mN)を算出した。なお、上記測定は、注射針1~36および比較注射針1~12を、それぞれ、ゴム栓に0回(初期)、10回穿刺した後に行った。
Claims (8)
- (1)下記一般式(1):
R2は、それぞれ独立して、一価の炭化水素基を表し、
mは、1000~30000の整数である、
で示される水酸基含有ポリオルガノシロキサン(1)と、
(2)下記一般式(2):
nは、8~1000の整数である、
で示される、ポリジオルガノシロキサン(2)と、
(3)下記一般式(3):
R7およびR8は、それぞれ独立して、一価の炭化水素基を表し、
Aは、それぞれ独立して、アミノ基含有基を表し、
p:q=5~100:1であり、および
qは、1~100の整数である、
で示される、1分子中に少なくとも1個のアミノ基を含有するアミノ基含有ポリオルガノシロキサン(3)と、
を含むコーティング剤であって、
前記ポリジオルガノシロキサン(2)は、前記アミノ基含有ポリオルガノシロキサン(3)に対する質量比が0.7~3.0の割合で含まれ、
前記水酸基含有ポリオルガノシロキサン(1)は、前記水酸基含有ポリオルガノシロキサン(1)、ポリジオルガノシロキサン(2)およびアミノ基含有ポリオルガノシロキサン(3)の合計質量に対して、2.4~5.5質量%の割合で含まれる、コーティング剤。 - 前記ポリジオルガノシロキサン(2)は、前記水酸基含有ポリオルガノシロキサン(1)、ポリジオルガノシロキサン(2)およびアミノ基含有ポリオルガノシロキサン(3)の合計質量に対して、40~75質量%の割合で含まれる、請求項1に記載のコーティング剤。
- 前記一般式(1)において、R1およびR1’の1個は水酸基であり、残りのR1およびR1’は、それぞれ独立して、炭素数1~4の直鎖もしくは分岐状のアルキル基であり、R2は、それぞれ独立して、炭素数1~4の直鎖もしくは分岐状のアルキル基である、請求項1または2に記載のコーティング剤。
- 前記一般式(2)において、R4およびR5は、それぞれ独立して、炭素数1~4の直鎖もしくは分岐状のアルキル基である、請求項1~3のいずれか1項に記載のコーティング剤。
- 前記一般式(3)において、R6は、それぞれ独立して、炭素数1~4の直鎖もしくは分岐状のアルキル基であり、R7およびR8は、それぞれ独立して、炭素数1~4の直鎖もしくは分岐状のアルキル基であり、Aは、γ-アミノプロピル基、N-(β-アミノエチル)アミノメチル基またはγ-(N-(β-アミノエチル)アミノ)プロピル基である、請求項1~4のいずれか1項に記載のコーティング剤。
- 請求項1~5のいずれか1項に記載のコーティング剤の硬化処理により表面処理してなる医療機器。
- 針である、請求項6に記載の医療機器。
- 前記硬化処理は、前記コーティング剤を含む塗膜を加熱するまたは放射線照射することによって行われる、請求項6または7に記載の医療機器。
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PH12017502114A1 (en) | 2018-05-07 |
CN107735467B (zh) | 2020-06-16 |
EP3318614A4 (en) | 2019-01-09 |
EP3318614B1 (en) | 2020-02-19 |
US20180117221A1 (en) | 2018-05-03 |
AU2016286690B2 (en) | 2019-01-17 |
JP6791852B2 (ja) | 2020-11-25 |
EP3318614A1 (en) | 2018-05-09 |
JPWO2017002599A1 (ja) | 2018-04-12 |
CN107735467A (zh) | 2018-02-23 |
US10556041B2 (en) | 2020-02-11 |
PH12017502114B1 (en) | 2018-05-07 |
AU2016286690A1 (en) | 2017-11-30 |
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