Classifications

• • G—PHYSICS
  • G02—OPTICS
  • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
  • G02C7/00—Optical parts
  • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
  • G02C7/04—Contact lenses for the eyes
• • 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
  • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
  • A61L27/28—Materials for coating prostheses
  • A61L27/34—Macromolecular materials
• • 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
  • A61L12/00—Methods or apparatus for disinfecting or sterilising contact lenses; Accessories therefor
  • A61L12/02—Methods or apparatus for disinfecting or sterilising contact lenses; Accessories therefor using physical phenomena, e.g. electricity, ultrasound or ultrafiltration
  • A61L12/04—Heat
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
  • A61L2/00—Disinfection or sterilisation of materials or objects, in general; Accessories therefor
  • A61L2/02—Disinfection or sterilisation of materials or objects, in general; Accessories therefor using physical processes
  • A61L2/04—Heat
• • 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
  • A61L26/00—Chemical aspects of, or use of materials for, wound dressings or bandages in liquid, gel or powder form
  • A61L26/0009—Chemical aspects of, or use of materials for, wound dressings or bandages in liquid, gel or powder form containing macromolecular materials
  • A61L26/0019—Chemical aspects of, or use of materials for, wound dressings or bandages in liquid, gel or powder form containing macromolecular materials obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• • 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
  • A61L26/00—Chemical aspects of, or use of materials for, wound dressings or bandages in liquid, gel or powder form
  • A61L26/0061—Use of materials characterised by their function or physical properties
  • A61L26/008—Hydrogels or hydrocolloids
• • 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
  • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
  • A61L27/14—Macromolecular materials
  • A61L27/18—Macromolecular materials obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• • 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
  • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
  • A61L27/50—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
  • A61L27/52—Hydrogels or hydrocolloids
• • 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
  • A61L29/04—Macromolecular materials
  • A61L29/06—Macromolecular materials obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• • 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
  • A61L29/08—Materials for coatings
  • A61L29/085—Macromolecular materials
• • 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
  • A61L29/145—Hydrogels or hydrocolloids
• • 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
  • A61L31/04—Macromolecular materials
  • A61L31/06—Macromolecular materials obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• • 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
• • 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
  • A61L31/14—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
  • A61L31/145—Hydrogels or hydrocolloids
• • 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
  • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
  • C09D133/24—Homopolymers or copolymers of amides or imides
  • C09D133/26—Homopolymers or copolymers of acrylamide or methacrylamide
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
  • A61L2/00—Disinfection or sterilisation of materials or objects, in general; Accessories therefor
  • A61L2/02—Disinfection or sterilisation of materials or objects, in general; Accessories therefor using physical processes
  • A61L2/04—Heat
  • A61L2/06—Hot gas
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
  • A61L2/00—Disinfection or sterilisation of materials or objects, in general; Accessories therefor
  • A61L2/02—Disinfection or sterilisation of materials or objects, in general; Accessories therefor using physical processes
  • A61L2/08—Radiation
  • A61L2/10—Ultraviolet [UV] radiation
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
  • A61L2/00—Disinfection or sterilisation of materials or objects, in general; Accessories therefor
  • A61L2/16—Disinfection or sterilisation of materials or objects, in general; Accessories therefor using chemical substances
  • A61L2/20—Gaseous substances, e.g. vapours
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
  • A61L2/00—Disinfection or sterilisation of materials or objects, in general; Accessories therefor
  • A61L2/16—Disinfection or sterilisation of materials or objects, in general; Accessories therefor using chemical substances
  • A61L2/20—Gaseous substances, e.g. vapours
  • A61L2/206—Ethylene oxide
• • 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
  • A61L2103/00—Materials or objects being the target of disinfection or sterilisation
  • A61L2103/15—Laboratory, medical or dentistry appliances, e.g. catheters or sharps
• • 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
  • A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
  • A61L2300/40—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a specific therapeutic activity or mode of action
  • A61L2300/424—Anti-adhesion agents
• • 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
  • A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
  • A61L2300/40—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a specific therapeutic activity or mode of action
  • A61L2300/452—Lubricants
• • 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
  • 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
  • A61L2430/00—Materials or treatment for tissue regeneration
  • A61L2430/16—Materials or treatment for tissue regeneration for reconstruction of eye parts, e.g. intraocular lens, cornea
• • G—PHYSICS
  • G02—OPTICS
  • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
  • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
  • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
  • G02B1/041—Lenses
  • G02B1/043—Contact lenses

Definitions

• the present invention relates to a coated medical device and its manufacturing method.
• the medical device is sterilized in an autoclave in a pH 6 to 9 solution containing one or more polymers such as polyvinylpyrrolidone to form a coating on the surface to form a medical device.
• a pH 6 to 9 solution containing one or more polymers such as polyvinylpyrrolidone
• Methods for improving wearability of devices are known (Patent Documents 1 to 3).
• Patent No. 5154231 Japanese Patent Publication No. 2010-508563 JP 2017-176821 A
• Patent Documents 1 to 3 can impart sufficient hydrophilicity, lubricity, etc. to the surface of the medical device, and furthermore, can impart lipid adhesion inhibitory properties to the medical device. It wasn't the way.
• an object of the present invention is to provide a coated medical device imparted with sufficient hydrophilicity and lubricity as well as lipid adhesion inhibitory properties, and a simple manufacturing method thereof.
• the present invention provides a coated medical device comprising a medical device and a hydrophilic polymer layer coating the surface of the medical device, wherein the hydrophilic polymer layer is hydrophilic It contains a polymer A, the hydrophilic polymer A contains a compound a1 represented by the following general formula (I) and a compound a2 having an amide group as monomer units, and the compound a1 and the compound a2 together A coated medical device having a polymerization ratio of 1/99 to 99/1 by weight.
• R 1 represents a hydrogen atom or a methyl group
• X represents an oxygen atom or NR 2
• R 2 represents a hydrogen atom or an alkyl group
• m represents an integer of 1 to 30
• Y represents an alkyl group.
• the present invention includes a contacting step of (A) storing a medical device in a container and bringing the medical device into contact with a solution a containing a hydrophilic polymer A, and (C) heating the container.
• the hydrophilic polymer A includes the compound a1 represented by the general formula (I) and the compound a2 having an amide group as monomer units, and the compound a1 and the compound a2
• the copolymerization ratio is 1/99 to 99/1 by mass
• R 1 represents a hydrogen atom or a methyl group
• X represents an oxygen atom or NR 2
• R 2 represents a hydrogen atom or an alkyl group
• m represents an integer of 1 to 30
• Y represents an alkyl group
• the present invention it is possible to provide a coated medical device imparted with lipid adhesion suppression properties in addition to sufficient hydrophilicity and slipperiness required for medical devices. Moreover, according to the production method of the present invention, the coated medical device can be obtained by a simple process.
• the coated medical device of the present invention comprises a medical device and a hydrophilic polymer layer that coats the surface of the medical device.
• the hydrophilic polymer layer contains a hydrophilic polymer A, and the hydrophilic polymer A contains a compound a1 represented by the following general formula (I) and a compound a2 having an amide group as monomer units,
• the copolymerization ratio of the compound a1 and the compound a2 is characterized by being 1/99 to 99/1 in mass ratio.
• R 1 represents a hydrogen atom or a methyl group
• X represents an oxygen atom or NR2
• R 2 represents a hydrogen atom or an alkyl group
• m represents an integer of 1 to 30
• Y represents represents an alkyl group.
• Examples of medical devices included in the coated medical device of the present invention include ophthalmic lenses, skin dressings, wound dressings, skin protective materials, skin drug carriers, transfusion tubes, gas transport tubes, and drainage tubes. Tubing, blood circuits, covering tubes, catheters, stents, sheaths, biosensor chips, heart-lung machines or endoscopic coverings.
• Ophthalmic lenses include, for example, contact lenses, intraocular lenses, artificial corneas, corneal inlays, corneal onlays and spectacle lenses.
• the material that constitutes the medical device may be either a water-containing material or a low-water-containing material.
• water-containing materials include hydrogels and silicone hydrogels.
• the water-containing material is highly resistant to lipid adhesion, exhibits excellent hydrophilicity and lubricity, and is durable.
• a hydrogel is preferable because a surface layer can be formed and the effect tends to be sustained even when worn for a long time.
• Low water content materials include, for example, low water content soft materials or low water content hard materials.
• the low water content material refers to a material having a water content of 10% by mass or less.
• United States Adopted Names may be used to represent the names of hydrogels or silicone hydrogels.
• symbols such as A, B, and C may be added at the end to represent variants of materials, but in this specification, all variants are represented when the symbols at the end are not added.
• ocufilcon when simply written as "ocufilcon”, “ocufilcon A (ocufilcon A)”, “ocufilcon B (ocufilcon B)”, “ocufilcon C (ocufilcon C)”, “ocufilcon D )”, “ocufilcon E” or “ocufilcon F”, etc., are intended to denote all variants of ocufilcon.
• Hydrogels include, for example, tefilcon, tetrafilcon, hefilcon, mafilcon, polymacon, hioxifilcon, alfafilcon, omafilcon ), hixoifilcon, nelfilcon, nesofilcon, hilafilcon, acofilcon, deltafilcon, etafilcon, focofilcon, Ocufilcon, phemfilcon, methafilcon or vilfilcon.
• the medical device When the medical device is a contact lens made of hydrogel, it belongs to the contact lens classification Group1 to Group4 defined by the US Food and Drug Administration (FDA). is more preferred.
• FDA US Food and Drug Administration
• Nonionic hydrogels with a water content of less than 50% by mass belonging to Group 1 include, for example, tefilcon, tetrafilcon, helfilcon, mafilcon, polymacon or hyoxyfilcon (hioxifilcon).
• nonionic hydrogels belonging to Group 2 with a water content of 50% by mass or more include alfafilcon, omafilcon, hixoifilcon, nelfilcon, and nesofilcon. , hilafilcon or acofilcon, but preferably omafilcon, hixoifilcon, nelfilcon or nesofilcon, which exhibit good hydrophilicity, Omafilcon or hixoxifilcon is more preferred, and omafilcon is even more preferred.
• Examples of ionic hydrogels with a water content of less than 50% by mass belonging to Group 3 include deltafilcon.
• Examples of ionic hydrogels belonging to Group 4 and having a water content of 50% by mass or more include etafilcon, focofilcon, ocufilcon, femfilcon, methafilcon, or vilfilcon, preferably etafilcon, focofilcon, ocufilcon or femfilcon, which exhibit good hydrophilicity, etafilcon or occufilcon; Ocufilcon is more preferred, and etafilcon is even more preferred.
• the medical device is a contact lens made of silicone hydrogel, it preferably belongs to Group 5 of the contact lens classification defined by the US Food and Drug Administration (FDA).
• FDA US Food and Drug Administration
• Silicone hydrogels belonging to Group 5 are preferably polymers having silicon atoms in the main chain and/or side chains and having hydrophilicity, for example, copolymers of monomers containing siloxane bonds and hydrophilic monomers. .
• Such copolymers include, for example, lotrafilcon, galyfilcon, narafilcon, senofilcon, comfilcon, enfilcon, balafilcon, efrofilcon, fanfilcon, somofilcon, samfilcon, olifilcon, asmofilcon, formofilcon, stenfilcon, abafilcon (abafilcon), mangofilcon, riofilcon, sifilcon, larafilcon or delefilcon, which have good hydrophilicity and anti-lipidity in addition to lipid adhesion inhibitory properties.
• Lotrafilcon, galyfilcon, narafilcon, senofilcon, comfilcon, enfilcon, stenfilcon, somofilcon showing fouling properties , delefilcon, balafilcon or samfilcon are preferred, lotrafilcon, narafilcon, senofilcon, comfilcon or enfilcon More preferred are narafilcon, senofilcon or comfilcon.
• the low water content soft material or the low water content hard material is preferably a material containing silicon atoms that exhibits high oxygen permeability capable of supplying sufficient oxygen to the cornea.
• the hard material with low water content is preferably a hard material with low water content that belongs to the contact lens classification defined by the US Food and Drug Administration (FDA).
• FDA US Food and Drug Administration
• a polymer having silicon atoms such as siloxane bonds in the main chain and/or side chains is preferable, and tris(trimethylsiloxy)silylpropyl methacrylate, which has high oxygen permeability, double Homopolymers using bonded polydimethylsiloxane, silicone-containing acrylates or silicone-containing methacrylates, or copolymers of these with other monomers are more preferred.
• the low water content hard material consists of neofocon, pasifocon, telefocon, silafocon, paflufocon, petrafocon and fluorofocon. It is preferably selected from the group. Among them, neofocon, pasifocon, telefocon or silafocon are more preferable because they exhibit good lipid adhesion inhibitory properties and antifouling properties, and neofocon and pasifocon are more preferable. Or a telefocon is more preferred, and a neofocon is particularly preferred.
• polyethylene, polypropylene, polysulfone, polyetherimide, polystyrene, polymethyl methacrylate, polyamide, polyester, epoxy resin, polyurethane, or polyvinyl chloride are preferable as the low water content hard material.
• polysulfone, polystyrene, polymethyl methacrylate, polyurethane or polyamide are more preferable, and polymethyl methacrylate is even more preferable, because they exhibit good lipid adhesion inhibitory properties and antifouling properties.
• the low water content soft material for example, a material with a water content of 10 mass% or less, an elastic modulus of 100 to 2,000 kPa, and a tensile elongation of 50 to 3,000% disclosed in WO 2013/024799. and elastofilcon.
• the water content of the medical device is preferably 0.0001% by mass or more, more preferably 0.001% by mass or more.
• the water content of the medical device is preferably 80% by mass or less, more preferably 70% by mass or less, and even more preferably 60% by mass or less.
• the water content of the medical device is preferably 15% by mass or more, more preferably 20% by mass or more, because the movement of the lens in the eye is easily ensured.
• the hydrophilic polymer A has hydrophilicity.
• “having hydrophilicity” means that the polymer is added to 100 parts by mass of water at room temperature (20 to 23 ° C.) or a mixture of 100 parts by mass of water and 100 parts by mass of tert-butanol. It means that it is soluble.
• the solubility is preferably 0.01 parts by mass or more, more preferably 0.1 parts by mass or more, and even more preferably 1 part by mass or more.
• the hydrophilic polymer A contains a compound a1 represented by the following general formula (I) and a compound a2 having an amide group as monomer units, and the copolymerization ratio of the compound a1 and the compound a2 is 1. /99 to 99/1.
• the copolymerization ratio of the compound a1 and the compound a2 is a numerical value represented by "mass of compound a1/mass of compound a2".
• a single monomer or a mixture of a plurality of monomers having different structures can be used as each of the compound a1 and the compound a2.
• R 1 represents a hydrogen atom or a methyl group
• X represents an oxygen atom or NR 2
• R 2 represents a hydrogen atom or an alkyl group
• m represents an integer of 1 to 30
• Y represents an alkyl group.
• R 2 is an alkyl group, it may be linear or branched, but is preferably an alkyl group having 1 to 10 carbon atoms.
• R 2 include methyl group, ethyl group, propyl group, 2-propyl group, butyl group, 2-butyl group, tert-butyl group, pentyl group, 2-pentyl group, 3-pentyl group, hexyl group, A heptyl group or an octyl group may be mentioned.
• m is preferably 3 to 30 from the viewpoint of moderate hydrophilicity and ease of polymerization.
• the lower limit of m is more preferably 4, still more preferably 7, and particularly preferably 9.
• the upper limit of m is more preferably 25, still more preferably 23, and particularly preferably 13.
• Y is preferably an alkyl group having 1 to 5 carbon atoms, more preferably a methyl group, an ethyl group, a propyl group, an isopropyl group or a butyl group, particularly a methyl group or an ethyl group, from the viewpoint of ease of forming a coating layer.
• Preferred are methyl groups.
• the compound a2 having an amide group a compound having an acrylamide group or a methacrylamide group, or N-vinylcarboxylic acid amide (including cyclic ones) is preferable from the viewpoint of ease of polymerization.
• N-vinylpyrrolidone, N-isopropylacrylamide or N,N-dimethylacrylamide is preferred, N-isopropylacrylamide or N,N-dimethylacrylamide is more preferred, and N,N-dimethylacrylamide is preferred in order to increase lubricity. More preferred.
• the hydrophilic polymer A may contain, as monomer units, compounds other than the compound a1 represented by the general formula (I) and the compound a2 having an amide group.
• Such compounds include, for example, glycerol acrylate, glycerol methacrylate, N-(4-hydroxyphenyl)maleimide, hydroxystyrene or vinyl alcohol (vinyl carboxylic acid ester as precursor).
• Glycerol acrylate, glycerol methacrylate or vinyl alcohol is preferable, and glycerol acrylate or glycerol methacrylate is more preferable, in order to improve the antifouling property against body fluids.
• the hydrophilic polymer A By containing the compound a1 having a specific structure in the hydrophilic polymer A as a monomer unit, the hydrophilic polymer A is easily dissolved in water, the hydrophilic function is expressed, and the surface is not only hydrophilic but also lipid adhesion inhibitory. can be formed.
• hydrophilic polymer A contains the compound a2 having an amide group as a monomer unit, when the hydrophilic polymer A is dissolved in water, an appropriate viscosity is exhibited, and a surface that is not only hydrophilic but also easily slippery is formed. can.
• the copolymerization ratio of the compound a1 and the compound a2 is in the range of 1/99 to 99/1 in terms of mass ratio in order to facilitate the expression of functions such as lipid adhesion suppressing properties and durable hydrophilicity. That is, the ratio of compound a1 to 100% by mass of the entire hydrophilic polymer A must be 1% by mass or more, preferably 10% by mass or more, and more preferably 30% by mass or more. The proportion of compound a1 must be 99% by mass or less, preferably 90% by mass or less, more preferably 85% by mass or less, and even more preferably 80% by mass or less, from the viewpoint of easiness of polymerization.
• the proportion of the compound a2 should be 1% by mass or more, preferably 10% by mass or more, more preferably 15% by mass or more, and more preferably 20% by mass or more, based on 100% by mass of the entire hydrophilic polymer A. preferable.
• the proportion of compound a2 must be 99% by mass or less, preferably 90% by mass or less, more preferably 80% by mass or less, and even more preferably 70% by mass or less.
• the hydrophilic polymer A has a weight-average molecular weight of 2,000 to 1,500,000 in order to increase the adsorption power of the hydrophilic polymer A to the surface of the medical device and to impart sufficient lipid adhesion inhibitory properties to the medical device.
• the weight average molecular weight is more preferably 5,000 or more, even more preferably 10,000 or more, and particularly preferably 100,000 or more.
• the weight average molecular weight is more preferably 1,200,000 or less, even more preferably 1,000,000 or less, and particularly preferably 900,000 or less.
• the weight-average molecular weight referred to here is the weight-average molecular weight in terms of polyethylene glycol measured by gel permeation chromatography using an aqueous solvent as a developing solvent.
• the method for producing a coated medical device of the present invention includes (A) a contacting step of storing a medical device in a container and bringing the medical device into contact with a solution a containing a hydrophilic polymer A; A heating step of heating the container, wherein the hydrophilic polymer A includes a compound a1 represented by the following general formula (I) and a compound a2 having an amide group as monomer units, and the compound The copolymerization ratio of a1 and the compound a2 is 1/99 to 99/1 in mass ratio,
• R 1 represents a hydrogen atom or a methyl group
• X represents an oxygen atom or NR 2
• R 2 represents a hydrogen atom or an alkyl group
• m represents an integer of 1 to 30
• Y represents an alkyl group
• the solution a after the heating step has a pH of 6.1 to 8.0.
• the concentration of the hydrophilic polymer A in the solution a containing the hydrophilic polymer A is preferably in the range of 0.0001 to 30% by mass in order to moderate the viscosity of the solution a.
• the concentration of hydrophilic polymer A is more preferably 0.001% by mass or more, and even more preferably 0.005% by mass or more.
• the concentration of the hydrophilic polymer A is more preferably 10.0% by mass or less, still more preferably 5.0% by mass or less, even more preferably 1.0% by mass or less, and 0.0% by mass or less. It is particularly preferred that it is 5% by mass or less.
• the solvent for the solution a containing the hydrophilic polymer A is preferably a water-soluble organic solvent, water, or a mixed solvent thereof, more preferably a mixed solvent of water and a water-soluble organic solvent, or water, for ease of handling. Water is more preferred.
• water-soluble organic solvent water-soluble alcohols are preferable, water-soluble alcohols having 6 or less carbon atoms are more preferable, and water-soluble alcohols having 5 or less carbon atoms are even more preferable.
• the solution a may further contain buffering agents and other additives.
• Buffers contained in solution a include, for example, boric acid, borates (e.g. sodium borate), citric acid, citrates (e.g. potassium citrate), bicarbonates (e.g. sodium bicarbonate), Phosphate buffer (eg Na 2 HPO 4 , NaH 2 PO 4 or KH 2 PO 4 ), TRIS (tris(hydroxymethyl)aminomethane), 2-bis(2-hydroxyethyl)amino-2-(hydroxymethyl )-1,3-propanediol, bis-aminopolyol, triethanolamine, ACES (N-(2-acetamido)-2-aminoethanesulfonic acid), BES (N,N-bis(2-hydroxyethyl)- 2-aminoethanesulfonic acid), HEPES (4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid), MES (2-(N-morpholino)ethanesulfonic acid), MOPS
• the ratio of the buffering agent in the solution a may be appropriately adjusted to achieve the desired pH, but is usually preferably 0.001 to 2.000% by mass. 010% by mass or more, more preferably 0.050% by mass or more, and more preferably 1.000% by mass or less, and even more preferably 0.300% by mass or less.
• the pH of the buffer solution used for adjusting solution a is preferably in the physiologically acceptable range of 6.3 to 7.8.
• the pH of the buffer solution is more preferably 6.5 or higher, even more preferably 6.8 or higher.
• the pH of the buffer solution is more preferably 7.6 or less, more preferably 7.4 or less.
• Examples of containers for storing the medical device in the contacting step include vials or blister containers used for packaging ophthalmic lenses when the medical device is an ophthalmic lens.
• a blister container usually consists of a plastic base surrounded by a planar flange that rises around the edges of its cavity, and a flexible cover sheet that is adhered to the planar flange and seals the cavity.
• Materials for the plastic base include, for example, fluororesins, polyamides, polyacrylates, polyethylene, nylons, olefin copolymers (e.g. copolymers of polypropylene and polyethylene), polyethylene terephthalate, polyvinyl chloride, amorphous polyolefins, polycarbohydrates. phosphate, polysulfone, polybutylene terephthalate, polypropylene, polymethylpentene, polyesters, rubbers or urethanes.
• soft cover sheets include laminated materials such as polypropylene sheets coated with aluminum foil.
• the manufacturing method of the coated medical device of the present invention comprises (C) a heating step of heating the container.
• heating method examples include heating method (hot air), autoclave sterilization method, dry heat sterilization method, flame sterilization method, boiling sterilization method, circulation steam sterilization method, electromagnetic wave ( ⁇ ray, microwave, etc.) irradiation, An ethylene oxide gas sterilization method (EOG sterilization method) or an ultraviolet sterilization method can be mentioned.
• heating method hot air
• autoclave sterilization method dry heat sterilization method
• flame sterilization method boiling sterilization method
• circulation steam sterilization method electromagnetic wave ( ⁇ ray, microwave, etc.) irradiation
• An ethylene oxide gas sterilization method (EOG sterilization method) or an ultraviolet sterilization method can be mentioned.
• High-pressure steam sterilization is preferred, and autoclave sterilization using an autoclave as an apparatus is more preferred, because it can impart sufficient lipid adhesion inhibitory properties to the medical device and the manufacturing cost is low.
• the heating temperature is preferably 80 to 200°C so as not to affect the strength of the resulting coated medical device itself while imparting sufficient lipid adhesion inhibitory properties to the medical device.
• the heating temperature is more preferably 90° C. or higher, more preferably 105° C. or higher, still more preferably 110° C. or higher, still more preferably 115° C. or higher, and particularly preferably 121° C. or higher.
• the heating temperature is more preferably 180° C. or lower, still more preferably 170° C. or lower, and particularly preferably 150° C. or lower.
• the heating time is preferably 1 to 600 minutes for the same reason as the heating temperature.
• the heating time is more preferably 2 minutes or longer, still more preferably 5 minutes or longer, and particularly preferably 10 minutes or longer.
• the heating time is more preferably 400 minutes or less, still more preferably 300 minutes or less, and particularly preferably 100 minutes or less.
• the method for producing a coated medical device of the present invention preferably further includes (B) a sealing step of sealing the container containing the medical device after the contacting step and before the heating step.
• the heating step is carried out after the container containing the medical device is sealed, the surface of the medical device can be given lipid adhesion inhibitory properties, and at the same time, the resulting coated medical device can be sterilized and maintained in a sterilized state. It becomes possible, and has an industrially important meaning from the viewpoint of reduction of the manufacturing process. That is, in the manufacturing method of the coated medical device of the present invention, it is preferable to sterilize the medical device by the above-described heating step in order to simplify the manufacturing process.
• the means for sealing the container includes, for example, means for sealing the container by using a capped vial or a blister container as the container for storing the medical device.
• the medical device is a contact lens
• a common lens case attached to contact lens care products may be used as a means for sealing the container.
• the resulting coated medical device may be subjected to other treatments.
• Other treatments include, for example, similar heat treatment using a buffer solution that does not contain a hydrophilic polymer, irradiation with ion beams, electron beams, positron beams, X-rays, gamma rays or neutron beams, and oppositely charged LbL treatment (Layer-by-Layer treatment; for example, the treatment described in WO 2013/024800), or a cross-linking treatment or chemical cross-linking treatment with metal ions (for example, Treatment described in Table 2014-533381).
• the surface of the medical device may be pretreated before the contacting step and the heating step.
• the pretreatment include hydrolysis treatment with an acid such as polyacrylic acid and an alkali such as sodium hydroxide.
• the manufacturing method of the coated medical device of the present invention requires that the pH of the solution a after the heating step is 6.1 to 8.0.
• a pH within this range eliminates the need to wash the coated medical device obtained after the heating step with a neutral solution, which is industrially significant from the viewpoint of reducing the number of manufacturing steps. It should be noted that when washing with a neutral solution is performed after the heating step, it may be necessary to sterilize the resulting coated medical device again.
• the pH of the solution a after the heating step is preferably 6.5 or higher, more preferably 6.6 or higher, still more preferably 6.7 or higher, and particularly preferably 6.8 or higher. Also, the pH is preferably 7.9 or less, more preferably 7.8 or less, and even more preferably 7.6 or less.
• the pH of the solution a before the heating step is also preferably 6.1 to 8.0.
• the pH of the solution a before the heating step is the pH value measured after preparing the solution a and stirring it with a rotor at room temperature (20 to 23° C.) for 30 minutes to homogenize the solution.
• the pH of the above solution a can be measured using a pH meter (for example, pH meter Eutech pH2700 (manufactured by Eutech Instruments)).
• a pH meter for example, pH meter Eutech pH2700 (manufactured by Eutech Instruments)
• the second decimal place of the pH value is rounded off.
• the absence of covalent bonds allows the coated medical device to be manufactured in a simpler process, regardless of whether the medical device is a hydrous material or a low hydrous material.
• the absence of covalent bonds means that there are no chemically reactive groups or groups produced by reaction between the hydrophilic polymer layer and the medical device.
• the absence of chemically reactive groups or groups formed by their reaction can be confirmed by elemental analysis such as electron energy loss spectroscopy, energy dispersive X-ray spectroscopy or time-of-flight secondary ion mass spectrometry, or composition It can be confirmed by analytical means.
• Chemically reactive groups include, for example, azetidinium groups, epoxy groups, isocyanate groups, aziridine groups or azlactone groups.
• the thickness of the hydrophilic polymer layer is preferably 1 to 99 nm when a section perpendicular to the longitudinal direction of the frozen coated medical device is observed using a transmission electron microscope. When the thickness of the hydrophilic polymer layer is within this range, functions such as hydrophilicity and slipperiness are likely to be exhibited.
• the thickness of the hydrophilic polymer layer is more preferably 5 nm or more, more preferably 10 nm or more.
• the thickness of the hydrophilic polymer layer is more preferably 95 nm or less, more preferably 90 nm or less, still more preferably 85 nm or less, even more preferably 50 nm or less, even more preferably 40 nm or less, still more preferably 30 nm or less, and even more preferably 20 nm or less. , 15 nm or less are particularly preferred.
• the hydrophilic polymer layer having a thickness of less than 100 nm prevents disturbance in the refraction of light for focusing on the retina, thereby preventing poor visibility.
• the coating layer in the obtained coated medical device may be present only on a part of the surface of the medical device, may be present only on the entire surface of either one of the front and back surfaces, or may be present on the entire surface. I don't mind.
• the state in which the hydrophilic polymer layer and the medical device are mixed means a state in which an element derived from the medical device is detected in the hydrophilic polymer layer. It can be confirmed by observation by elemental analysis such as loss spectroscopy, energy dispersive X-ray spectroscopy or time-of-flight secondary ion mass spectroscopy, or composition analysis means.
• a mixed layer which is a layer in which at least part of the hydrophilic polymer layer is mixed with the medical device, on the surface of the medical device is preferable because the hydrophilic polymer is firmly adhered to the surface of the medical device.
• a mixed layer it is preferable to observe a two-layer structure of the mixed layer and a single layer consisting only of the hydrophilic polymer. Similar to the thickness of the hydrophilic polymer layer, the thickness of the mixed layer can be measured by observing a section perpendicular to the longitudinal direction of the covered medical device in a semi-dry state using a transmission electron microscope.
• the thickness of the mixed layer is preferably 3% or more, more preferably 5% or more, and 10% or more of the total thickness of the mixed layer and the single layer in order to firmly adhere the hydrophilic polymer to the surface of the medical device. is more preferred.
• the thickness of the mixed layer is preferably 98% or less, more preferably 95% or less, and 90% or less of the total thickness of the mixed layer and the single layer in order to sufficiently express the hydrophilicity of the hydrophilic polymer. is more preferred, and 80% or less is particularly preferred.
• the blended portion refers to a portion that does not have a layered structure, in which the hydrophilic polymer and the medical device are mixed.
• the phrase “a mixed portion is observed” means that an element derived from the medical device is detected in a portion other than the mixed layer in the hydrophilic polymer layer.
• the thickness of the mixed portion is preferably 3% or more, more preferably 5% or more, and even more preferably 10% or more of the total thickness of the mixed layer and the mixed portion.
• the thickness of the mixed portion is preferably 98% or less, more preferably 95% or less, and 90% or less of the total thickness of the mixed layer and the mixed portion in order to sufficiently express the hydrophilicity of the hydrophilic polymer. is more preferred, and 80% or less is particularly preferred.
• the coated medical device When the coated medical device is an ophthalmic lens, etc., the coated medical device not only prevents sticking to the cornea of the wearer, but also prevents dry feeling and maintains good wearing comfort for a long time. It is preferable that the liquid film retention time on the surface is long.
• the liquid film retention time on the surface of the coated medical device means that the coated medical device is immersed in a solution at room temperature (20 to 23° C.), then pulled out of the solution, and the longitudinal direction of the device is the direction of gravity. It is the time that the liquid film on the surface is maintained without breaking when it is held in the air so that it becomes . If the test piece has a crown shape such as a contact lens, it shall be held so that the diameter direction of the circle formed by the edge of the crown is in the direction of gravity.
• the term "liquid film breaks" refers to a state in which part of the solution covering the surface of the coated medical device is repelled and the surface of the coated medical device is no longer completely covered with the liquid film. If the liquid film retention time is too long, water evaporation from the surface of the coated medical device tends to proceed and the hydrophilic effect is reduced. is more preferable.
• the coated medical device When the coated medical device is an ophthalmic lens, etc., the coated medical device not only prevents sticking to the cornea of the wearer, but also prevents dry feeling and maintains good wearing comfort for a long time. A small droplet contact angle on the surface is preferred. A method for measuring the droplet contact angle will be described later.
• the droplet contact angle is preferably 80° or less, preferably 70° or less, and more preferably 65° or less.
• the droplet contact angle is preferably 70° or less, more preferably 60° or less, and even more preferably 55° or less.
• the coated medical device is, for example, a coated medical device that is used by being inserted into a living body
• the surface has excellent lubricity.
• the coefficient of friction which is an indicator of slipperiness, is preferably 0.300 or less, more preferably 0.200 or less, even more preferably 0.100 or less, and even more preferably 0.080 or less.
• the coefficient of friction is preferably 0.001 or more, more preferably 0.002 or more. A method for measuring the coefficient of friction will be described later.
• the tensile modulus is preferably 10.00 MPa or less, more preferably 5.00 MPa or less, and further preferably 3.00 MPa or less, in order to improve wearing comfort. It is preferably 2.00 MPa or less, more preferably 1.00 MPa or less, and particularly preferably 0.60 MPa or less.
• the tensile modulus of the coated medical device is preferably 0.01 MPa or more, more preferably 0.10 MPa or more, still more preferably 0.20 MPa or more, and particularly preferably 0.25 MPa or more.
• the tensile modulus change rate of the medical device before and after the heating step is preferably ⁇ 15.00% or less, more preferably ⁇ 13.00% or less, in order to suppress the risk of deformation and poor usability. ⁇ 10.00% or less is more preferable. A method for measuring the tensile modulus will be described later.
• the amount of lipid attached to the coated medical device is small in order to improve usability and reduce the risk of bacterial growth.
• a method for measuring the amount of adhered lipid will be described later.
• the amount of change in water content of the medical device before and after coating should be 10% by mass or less in order to prevent poor visibility and deformation caused by refractive index distortion due to an increase in water content. is preferable, 8% by mass or less is more preferable, and 6% by mass or less is even more preferable. A method for measuring the moisture content will be described later.
• the size change rate of the medical device before and after coating is preferably ⁇ 5.00% or less, and ⁇ 4.00%. It is more preferably less than or equal to, more preferably less than or equal to ⁇ 3.00%.
• Example S ⁇ Hydrophilicity after immersion in fresh phosphate buffer solution (PBS) for 24 hours (liquid film retention time after 24 hours)>
• the coated medical device after the heating process or the medical device was placed in 4 mL of fresh phosphate buffer in a glass vial at room temperature (20-23°C). for 24 hours. Thereafter, the coated medical device or medical device pulled out from the phosphate buffer solution in the glass vial was used as a sample (hereinafter referred to as "sample S"), and was evaluated in the same manner as for the above "hydrophilicity”.
• the medical device was immersed in a phosphate buffer and allowed to stand at room temperature (20-23° C.) for 24 hours or more. After that, the medical device was pulled out of the phosphate buffer solution and the surface moisture was wiped off with a wiping cloth “Kimwipe” (registered trademark) (manufactured by Nippon Paper Crecia Co., Ltd.), after which the mass (Ww) of the medical device was measured. Then, after drying the medical device at 40° C. for 2 hours in a vacuum dryer, the mass (Wd) of the medical device was measured. From these masses, the water content of the medical device was calculated by the following formula (1).
• Friction tester KES-SE manufactured by Kato Tech Co., Ltd.
• Friction SENS H Measured SPEED: 2 x 1 mm/sec Friction load: 44 g.
• a 20 cc screw tube was charged with 0.03 g of methyl palmitate, 10 g of pure water and a coated medical device (or medical device). The screw tube was shaken for 3 hours under conditions of 37° C. and 165 rpm. After shaking, the coated medical device (or medical device) in the screw tube was scrubbed with 40° C. tap water and household liquid detergent “Mamalemon” (registered trademark) (manufactured by Lion Corporation). The washed sample was placed in a screw tube containing a phosphate buffer and stored in a refrigerator at 4°C for 24 hours.
• the coated medical device (or medical device) is visually observed, and if there is a cloudy part, it is determined that methyl palmitate is adhered, and the area of the part where methyl palmitate is adhered to the entire surface of the sample is observed. did.
• Size change rate before and after coating (size of coated medical device after coating - size of medical device before coating)/size of medical device before coating x 100 Formula (4).
• Mw weight average molecular weight
• ⁇ pH> The pH of the solution was measured using Eutech pH2700 (manufactured by Eutech Instruments) as a pH meter.
• the “post-heating pH” of the solution a was measured immediately after the solution a was cooled to room temperature (20 to 23° C.) after the heating step.
• Measurement samples were prepared by RuO 4 -stained frozen ultrathin sections.
• composition Elemental Analysis of Hydrophilic Polymer Layer Determination of the existence form of the hydrophilic polymer layer is performed by analyzing the surface state of the dry coated medical device (or medical device) by Time-of-Flight Secondary Ion Mass Spectrometry. gone. Equipment: TOF. SIMS5 (manufactured by ION-TOF) Observation conditions: Primary ion: Bi 3 ++ Secondary ion polarity: positive etching ion: Ar-GCIB (gas cluster ion beam) ⁇ Phosphate buffer> The compositions of the phosphate buffers used in Examples and Comparative Examples are as follows.
• Example 1 As a “medical device”, a commercially available silicone hydrogel lens "Acuvue Oasys" (registered trademark) (manufactured by Johnson & Johnson, senofilcon A) mainly composed of polyvinylpyrrolidone and silicone is used as a "container”, and a glass vial is used as a “solution a”.
• the medical device was immersed in the above solution a ((A) contact step), the glass vial was sealed with a cap ((B) sealing step), and then heated at 121° C. for 30 minutes using an autoclave ((C) heating process).
• Tables 1 to 3 show the results of evaluating the obtained coated medical device by the above method.
• Example 2 As solution a, methoxy polyethylene glycol methacrylate (polyethylene glycol chain number 9) / N,N-dimethylacrylamide copolymer (molar ratio in copolymerization 4/6, Mw: 500,000, manufactured by Osaka Organic Chemical Industry Co., Ltd.) The same operation as in Example 1 was performed except that a solution containing 0.2% by mass in a phosphate buffer was used. Tables 1 to 3 show the results of evaluating the obtained coated medical device by the above method.
• Example 4 As a medical device, a commercially available PFII catheter tube (manufactured by Toray Industries, Inc.) containing polyurethane as a main component was used. A solution containing 0.5% by mass of a polymer (molar ratio in copolymerization: 4/3/3, Mw: 500,000, manufactured by Osaka Organic Chemical Industry Co., Ltd.) in a phosphate buffer, autoclave conditions: 90 The same operation as in Example 1 was performed except that the temperature was changed to 30 minutes. Tables 1 to 3 show the results of evaluating the obtained coated medical device by the above method.
• Example 5 As solution a, methoxy polyethylene glycol methacrylate (polyethylene glycol chain number 9) / N,N-dimethylacrylamide copolymer (molar ratio in copolymerization 4/6, Mw: 350,000, manufactured by Osaka Organic Chemical Industry Co., Ltd.) The same operation as in Example 4 was performed except that a solution containing 0.4% by mass in phosphate buffer was used. Tables 1 to 3 show the results of evaluating the obtained coated medical device by the above method.
• Example 6 As the medical device, the same operation as in Example 1 was performed except that a commercially available film "Mictron” (registered trademark) (manufactured by Toray Industries, Inc.) containing para-aromatic polyamide (aramid) as a main component was used. Tables 1 to 3 show the results of evaluating the obtained coated medical device by the above method.
• Example 7 As solution a, methoxy polyethylene glycol methacrylate (polyethylene glycol chain number 9) / N,N-dimethylacrylamide copolymer (molar ratio in copolymerization 4/6, Mw: 500,000, manufactured by Osaka Organic Chemical Industry Co., Ltd.) The same operation as in Example 6 was performed except that a solution containing 0.5% by mass in a phosphate buffer was used. Tables 1 to 3 show the results of evaluating the obtained coated medical device by the above method.
• Example 8 The same operation as in Example 1 was performed, except that a commercially available hydrogel lens "Medalist 1day Plus” (registered trademark) (manufactured by Bausch & Lomb, hilafilcon B) containing 2-hydroxyethyl methacrylate as the main component was used as the medical device. .
• Tables 1 to 3 show the results of evaluating the obtained coated medical device by the above method.
• Example 9 As solution a, methoxy polyethylene glycol methacrylate (polyethylene glycol chain number 9) / N,N-dimethylacrylamide copolymer (molar ratio in copolymerization 1/9, Mw: 210,000, manufactured by Osaka Organic Chemical Industry Co., Ltd.) The same operation as in Example 8 was performed except that a solution containing 0.2% by mass in phosphate buffer was used. Tables 1 to 3 show the results of evaluating the obtained coated medical device by the above method.
• Example 10 As solution a, methoxy polyethylene glycol methacrylate (polyethylene glycol chain number 9) / N,N-dimethylacrylamide copolymer (molar ratio in copolymerization 1/9, Mw: 500,000, manufactured by Osaka Organic Chemical Industry Co., Ltd.) The same operation as in Example 1 was performed except that a solution containing 0.2% by mass in a phosphate buffer was used. Tables 1 to 3 show the results of evaluating the obtained coated medical device by the above method.
• Example 11 As solution a, methoxy polyethylene glycol methacrylate (polyethylene glycol chain number 9) / vinylpyrrolidone / N, N-dimethylacrylamide copolymer (molar ratio in copolymerization 4/3/3, Mw: 400,000, Osaka Organic Chemical Industry Co., Ltd.) was used in the phosphate buffer solution in the same manner as in Example 1, except for using a solution containing 0.2% by mass. Tables 1 to 3 show the results of evaluating the obtained coated medical device by the above method.
• Example 12 As solution a, methoxy polyethylene glycol acrylate (polyethylene glycol chain number 13) / N,N-dimethylacrylamide copolymer (molar ratio in copolymerization 1/9, Mw: 680,000, manufactured by Osaka Organic Chemical Industry Co., Ltd.) The same operation as in Example 8 was performed except that a solution containing 0.01% by mass in a phosphate buffer was used. Tables 1 to 3 show the results of evaluating the obtained coated medical device by the above method.
• Example 13 As solution a, methoxypolyethylene glycol acrylate (polyethylene glycol chain number 13) / N,N-dimethylacrylamide copolymer (molar ratio in copolymerization 4/6, Mw: 620,000, manufactured by Osaka Organic Chemical Industry Co., Ltd.) The same operation as in Example 8 was performed except that a solution containing 0.01% by mass in a phosphate buffer was used. Tables 1 to 3 show the results of evaluating the obtained coated medical device by the above method.
• Example 14 As solution a, methoxypolyethylene glycol acrylate (polyethylene glycol chain number 13) / vinylpyrrolidone / N,N-dimethylacrylamide copolymer (molar ratio in copolymerization 1/1/8, Mw: 570,000, Osaka Organic Chemical Industry The same operation as in Example 8 was performed except that a solution containing 0.01% by mass of phosphate buffer was used. Tables 1 to 3 show the results of evaluating the obtained coated medical device by the above method.
• Example 15 As solution a, methoxypolyethylene glycol acrylate (polyethylene glycol chain number 13) / vinylpyrrolidone / N,N-dimethylacrylamide copolymer (molar ratio in copolymerization 4/3/3, Mw: 880,000, Osaka Organic Chemical Industry The same operation as in Example 8 was performed except that a solution containing 0.01% by mass of phosphate buffer was used. Tables 1 to 3 show the results of evaluating the obtained coated medical device by the above method.
• Example 11 The same operation as in Example 1 was performed except that a phosphate buffer was used instead of the solution a. Tables 4 to 6 show the results of evaluating the obtained medical device (no polymer layer was observed) by the above method.
• Comparative Example 12 The same operation as in Comparative Example 11 was performed, except that a commercially available hydrogel lens "Medalist 1day Plus” (registered trademark) (manufactured by Bausch & Lomb, hilafilcon B) containing 2-hydroxyethyl methacrylate as the main component was used as the medical device. .
• Tables 4 to 6 show the results of evaluating the obtained medical device (no polymer layer was observed) by the above method.
• Comparative Example 13 The same operation as in Comparative Example 11 was performed except that a commercially available PFII catheter tube (manufactured by Toray Industries, Inc.) containing polyurethane as the main component was used as the medical device. Tables 4 to 6 show the results of evaluating the obtained medical device (no polymer layer was observed) by the above method.
• Comparative Example 14 The same operation as in Comparative Example 11 was performed, except that a commercially available film "Mictron” (registered trademark) (manufactured by Toray Industries, Inc.) mainly composed of para-aromatic polyamide (aramid) was used as the medical device. Tables 4 to 6 show the results of evaluating the obtained medical device (hydrophilic polymer layer was not confirmed) by the above method.
• Comparative Example 15 The same operation as in Comparative Example 10 was performed, except that a commercially available hydrogel lens "Medalist 1day Plus” (registered trademark) (manufactured by Bausch & Lomb, hilafilcon B) containing 2-hydroxyethyl methacrylate as the main component was used as the medical device. .
• Tables 4 to 6 show the results of evaluating the obtained medical device (no polymer layer was observed) by the above method.
• the present invention can impart excellent lipid adhesion inhibitory properties to medical devices in addition to sufficient hydrophilicity and lubricity. It is also clear that the target medical devices are not limited to water-containing hydrogels and the like (Examples 4 to 7).

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• 2022
  • 2022-02-04 EP EP22762893.0A patent/EP4285948A4/en active Pending
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