WO2004056403A2 - Method for making medical devices having antimicrobial coatings thereon - Google Patents
Method for making medical devices having antimicrobial coatings thereon Download PDFInfo
- Publication number
- WO2004056403A2 WO2004056403A2 PCT/EP2003/014531 EP0314531W WO2004056403A2 WO 2004056403 A2 WO2004056403 A2 WO 2004056403A2 EP 0314531 W EP0314531 W EP 0314531W WO 2004056403 A2 WO2004056403 A2 WO 2004056403A2
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- WO
- WIPO (PCT)
- Prior art keywords
- medical device
- lbl coating
- coating
- antimicrobial
- layer
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
- A61K9/50—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
- A61K9/5005—Wall or coating material
- A61K9/5015—Organic compounds, e.g. fats, sugars
-
- 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/13—Amines
- A61K31/14—Quaternary ammonium compounds, e.g. edrophonium, choline
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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
- 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
- A61L27/54—Biologically active materials, e.g. therapeutic substances
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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
- A61L29/00—Materials for catheters, medical tubing, cannulae, or endoscopes or for coating catheters
- A61L29/08—Materials for coatings
- A61L29/10—Inorganic materials
- A61L29/106—Inorganic materials other than carbon
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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
- 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
- A61L29/16—Biologically active materials, e.g. therapeutic substances
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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
- A61L31/082—Inorganic materials
- A61L31/088—Other specific inorganic materials not covered by A61L31/084 or A61L31/086
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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
-
- 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
- A61L31/16—Biologically active materials, e.g. therapeutic substances
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/04—Antibacterial agents
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- 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
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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
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/10—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices containing or releasing inorganic materials
- A61L2300/102—Metals or metal compounds, e.g. salts such as bicarbonates, carbonates, oxides, zeolites, silicates
- A61L2300/104—Silver, e.g. silver sulfadiazine
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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
- 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
- A61L2300/404—Biocides, antimicrobial agents, antiseptic agents
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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
- 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
- A61L2300/45—Mixtures of two or more drugs, e.g. synergistic mixtures
-
- 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
- A61L2300/60—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a special physical form
- A61L2300/606—Coatings
- A61L2300/608—Coatings having two or more layers
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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
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/60—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a special physical form
- A61L2300/606—Coatings
- A61L2300/608—Coatings having two or more layers
- A61L2300/61—Coatings having two or more layers containing two or more active agents in different layers
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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
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/60—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a special physical form
- A61L2300/62—Encapsulated active agents, e.g. emulsified droplets
- A61L2300/624—Nanocapsules
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31678—Of metal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31678—Of metal
- Y10T428/31681—Next to polyester, polyamide or polyimide [e.g., alkyd, glue, or nylon, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31678—Of metal
- Y10T428/31692—Next to addition polymer from unsaturated monomers
Definitions
- Optacular environment' refers to ocular fluids (e.g., tear fluid) and ocular tissue (e.g., the cornea) which may come into intimate contact with a contact lens used for vision correction, drug delivery, wound healing, eye color modification, or other ophthalmic applications.
- ocular fluids e.g., tear fluid
- ocular tissue e.g., the cornea
- a “monomer” means a low molecular weight compound that can be polymerized. Low molecular weight typically means average molecular weights less than 700 Daltons.
- Polymer means a material formed by polymerizing one or more monomers.
- a “capping bilayer”, as used herein, refers to the last bilayer of a first coating material and a second coating material, which is applied onto the surface of a medical device.
- polyquaf refers to a polymeric quaternary ammonium group-containing compound.
- polyionic material refers to a polymeric material that has a plurality of charged groups, such as polyelectrolytes, p- and n-type doped conducting polymers.
- Polyionic materials include both polycationic (having positive charges) and polyanionic (having negative charges) materials.
- an "antimicrobial LbL coating”, as used herein, refers to an LbL coating that imparts to a medical device the ability to decrease or eliminate or inhibit the growth of microorganisms on the surface of the medical device or in an adjacent area extending from the medical device.
- An antimicrobial LbL coating on a medical device of the invention exhibit preferably at least a 1 -log reduction (>90% inhibition), more preferably at least a 2-log reduction (>99% inhibition), of viable microorganisms.
- an "antimicrobial agent”, as used herein, refers to a chemical that is capable of decreasing or eliminating or inhibiting the growth of microorganisms such as that term is known in the art.
- Antimicrobial metal nanoparticles refers to particles which is made of one or more antimicrobial metals and have a size of less than 1 micrometer.
- the antimicrobial metals in the antimicrobial metal nanoparticles can be present in one or more of its oxidation state.
- An “averaged contact angle” refers to a contact angle (Sessile Drop), which is obtained by averaging measurements of at least 3 individual medical devices.
- increased surface hydrophilicity or “increased hydrophilicity” in reference to a coated medical device means that the coated medical device has a reduced averaged contact angle compared with an uncoated medical device.
- the invention in one aspect, provides a method for forming a silver nanoparticle-containing antimicrobial LbL coating on a medical device.
- the method comprises: obtaining a medical device with a polyelectrolyte LbL coating thereon, wherein the polyelectrolyte LbL coating includes one or more bilayers of a negatively charged polyionic material having -COOH groups and a positively charged polyionic material; immersing the medical device having the polyelectrolyte LbL coating in a solution containing silver ions for a period of time sufficient to replace a desired amount of H + with silver ions; and reducing silver ions contained in the polyelectrolyte LbL coating to form silver nano-particles.
- an antimicrobial metal, silver, in particular silver nanoparticles can be incorporated cost-effectively into an LbL coating according to a method of the invention. It is found that an silver nanoparticle-containing LbL coating of the invention may possess several advantages as follows. It can impart to a medical device not only an antimicrobial activity but also an increased surface hydrophilicity. It has minimal adverse effects on the desired bulk properties of, for example, a contact lens, such as oxygen permeability, ion permeability, and optical properties. An silver nanoparticle-containing LbL coating of the invention formed on a medical device can adhere well to a medical device and be stable, even after several cycles of autoclaving treatments.
- the process for forming a silver nanoparticle-containing LbL coating of the invention is well suited for automation and can be used to coat a wide range of substrate (polymeric, glass, quartz, ceramic, metal) and in any geometry. Out-diffusion of silver from the silver-containing coating is controllable.
- the core material of a medical device may be any of a wide variety of polymeric materials.
- exemplary core materials include, but are not limited to, hydrogels, silicone-containing hydrogels, polymers and copolymers of styrene and substituted styrenes, ethylene, propylene, acrylates and methacrylates, N-vinyl lactams, acrylamides and methacrylamides, acrylonitrile, acrylic and methacrylic acids.
- a preferred group of core materials to be coated are those being conventionally used for the manufacture of biomedical devices, e.g. contact lenses, in particular contact lenses for extended wear, which are not hydrophilic per se.
- Such materials are known to the skilled artisan and may comprise for example polysiloxanes, perfluoroalkyl polyethers, fluorinated poly(meth)acrylates or equivalent fluorinated polymers derived e.g.
- the core material underlying the composite materials of the invention is preferably a material that is devoid of ionic groups such as cationic or anionic groups. Accordingly, the surface of the preferred core materials is also devoid of ionic groups such as carboxy, sulfo, amino and the like groups and is thus substantially free from ionic charges.
- amphiphilic-segmented copolymers comprising at least one hydrophobic segment and at least one hydrophilic segment, which are linked through a bond or a bridge member.
- Examples are silicone hydrogels, for example those disclosed in PCT applications WO 96/31792 to Nicolson et al. and WO 97/49740 to Hirt et al.
- a particular preferred group of core materials to be coated comprises organic polymers selected from polyacrylates, polymethacrylates, polyacrylamides, poly(N,N- dimethylacrylamides), polymethacrylamides, polyvinyl acetates, polysiloxanes, perfluoroalkyl polyethers, fluorinated polyacrylates or -methacrylates and amphiphilic segmented copolymers comprising at least one hydrophobic segment, for example a polysiloxane or perfluoroalkyl polyether segment or a mixed polysiloxane/perfluoroalkyl polyether segment, and at least one hydrophilic segment, for example a polyoxazoline, poly(2- hydroxyethylmethacrylate), polyacrylamide, poly(N,N-dimethylacrylamide), polyvinylpyrrolidone polyacrylic or polymethacrylic acid segment or a copolymeric mixture of two or more of the underlying monomers.
- organic polymers selected from polyacrylates
- the core material to be coated may also be any blood-contacting material conventionally used for the manufacture of renal dialysis membranes, blood storage bags, pacemaker leads or vascular grafts.
- the material to be modified on its surface may be a polyurethane, polydimethylsiloxane, polytetrafluoroethylene, polyvinylchloride, DacronTM or SilasticTM type polymer, or a composite made therefrom.
- the core material to be coated may also be an inorganic or metallic base material without suitable reactive groups, e.g. ceramic, quartz, or metals, such as silicon or gold, or other polymeric or non-polymeric substrates, e.g., for implantable biomedical applications, ceramics are very useful.
- suitable reactive groups e.g. ceramic, quartz, or metals, such as silicon or gold, or other polymeric or non-polymeric substrates, e.g., for implantable biomedical applications, ceramics are very useful.
- hydrophilically coated base materials are expected to reduce nonspecific binding effects if the structure of the coating is well controlled. Biosensors may require a specific carbohydrate coating on gold, quartz, or other non-polymeric substrates.
- the form of the core material to be coated may vary within wide limits. Examples are particles, granules, capsules, fibers, tubes, films or membranes, preferably moldings of all kinds such as ophthalmic moldings, for example intraocular lenses, artificial cornea or in particular contact lenses.
- Examples of a branched polyacrylic acid include a Carbophil ® or Carbopol ® type from Goodrich Corp.
- Examples of a copolymer of acrylic or methacrylic acid include a copolymerization product of an acrylic or methacrylic acid with a vinyl monomer including, for example, acrylamide, N.N-dimethyl acrylamide or N-vinylpyrrolidone.
- polyanionic biopolymers or modified biopolymers are: hyaluronic acid, glycosaminoglycanes such as heparin or chondroitin sulfate, fucoidan, poly-aspartic acid, poly-glutamic acid, carboxymethyl cellulose, carboxymethyl dextrans, alginates, pectins, gellan, carboxyalkyl chitins, carboxymethyl chitosans, sulfated polysaccharides.
- a preferred polyanionic polymer is a linear or branched polyacrylic acid or an acrylic acid copolymer.
- a more preferred anionic polymer is a linear or branched polyacrylic acid.
- a branched polyacrylic acid in this context is to be understood as meaning a polyacrylic acid obtainable by polymerizing acrylic acid in the presence of suitable (minor) amounts of a di- or polyvinyl compound.
- PEI polyethyleneimine
- a polymer of an aliphatic or araliphatic dihalide and an aliphatic N.N.N'.N'-tetra-CrC ⁇ - alkyl-alkylenediamine for example a polymer of (a) propylene-1 ,3-dichloride or - dibromide or p-xylylene dichloride or dibromide and (b) N.N.N'.N'-tetramethyl-l ⁇ - tetramethylene diamine;
- the non-charged polymeric material according to the invention can be: a homopolymer of a vinyl lactam; a copolymer of at least one vinyl lactam in the presence or in the absence of one or more hydrophilic vinylic comonomers; or mixtures thereof.
- One coating process embodiment involves solely dip-coating and optionally dip-rinsing steps.
- Another coating process embodiment involves solely spray-coating and spray-rinsing steps.
- a number of alternatives involve various combinations of spray- and dip-coating and rinsing steps may be designed by a person having ordinary skill in the art.
- Another embodiment of the coating process is a single dip-coating process as described in U.S. patent application Publ. No. 2001-0048975.
- Such single dip-coating process involves dipping a core material of a medical device in a solution containing a negatively charged polyionic material and a positively charged polyionic material in an amount such that the molar charge ratio of said solution is from about 3:1 to about 100:1.
- Multiple bilayers can be formed on a medical device by using this single dip-coating process.
- a mold comprises at least two mold sections (or portions) or mold halves, i.e. first and second mold halves.
- the first mold half defines a first optical surface and the second mold half defines a second optical surface.
- the first and second mold halves are configured to receive each other such that a contact lens forming cavity is formed between the first optical surface and the second optical surface.
- the first and second mold halves can be formed through various techniques, such as injection molding. These half sections can later be joined together such that a contact lens-forming cavity is formed therebetween. Thereafter, a contact lens can be formed within the contact lens-forming cavity using various processing techniques, such as ultraviolet curing.
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Veterinary Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Epidemiology (AREA)
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- Engineering & Computer Science (AREA)
- Vascular Medicine (AREA)
- Heart & Thoracic Surgery (AREA)
- Surgery (AREA)
- Biomedical Technology (AREA)
- Inorganic Chemistry (AREA)
- Molecular Biology (AREA)
- Pharmacology & Pharmacy (AREA)
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- Transplantation (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Communicable Diseases (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oncology (AREA)
- Organic Chemistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- General Chemical & Material Sciences (AREA)
- Materials For Medical Uses (AREA)
- Eyeglasses (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
- Cosmetics (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Dental Preparations (AREA)
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Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003604904 DE60304904T2 (en) | 2002-12-19 | 2003-12-18 | METHOD FOR THE PRODUCTION OF MEDICINAL PRODUCTS WITH ANTIMICROBIAL COATINGS |
JP2004561354A JP4681883B2 (en) | 2002-12-19 | 2003-12-18 | Method for manufacturing a medical device having an antibacterial coating |
MXPA05006631A MXPA05006631A (en) | 2002-12-19 | 2003-12-18 | Method for making medical devices having antimicrobial coatings thereon. |
CA 2508263 CA2508263A1 (en) | 2002-12-19 | 2003-12-18 | Method for making medical devices having antimicrobial coatings thereon |
EP20030813579 EP1575632B1 (en) | 2002-12-19 | 2003-12-18 | Method for making medical devices having antimicrobial coatings thereon |
AU2003296677A AU2003296677A1 (en) | 2002-12-19 | 2003-12-18 | Method for making medical devices having antimicrobial coatings thereon |
BR0317396A BR0317396A (en) | 2002-12-19 | 2003-12-18 | Method for manufacturing medical devices featuring antimicrobial coatings |
NO20053496A NO20053496L (en) | 2002-12-19 | 2005-07-18 | Process for the preparation of medical devices with antimicrobial coatings |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US43500302P | 2002-12-19 | 2002-12-19 | |
US60/435,003 | 2002-12-19 |
Publications (2)
Publication Number | Publication Date |
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WO2004056403A2 true WO2004056403A2 (en) | 2004-07-08 |
WO2004056403A3 WO2004056403A3 (en) | 2004-09-23 |
Family
ID=32682137
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/014531 WO2004056403A2 (en) | 2002-12-19 | 2003-12-18 | Method for making medical devices having antimicrobial coatings thereon |
PCT/EP2003/014533 WO2004056404A2 (en) | 2002-12-19 | 2003-12-18 | Medical devices having antimicrobial coatings thereon |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/014533 WO2004056404A2 (en) | 2002-12-19 | 2003-12-18 | Medical devices having antimicrobial coatings thereon |
Country Status (13)
Country | Link |
---|---|
US (5) | US8309117B2 (en) |
EP (2) | EP1575632B1 (en) |
JP (2) | JP4681883B2 (en) |
CN (2) | CN1729026A (en) |
AT (2) | ATE433763T1 (en) |
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- 2003-12-18 AU AU2003296677A patent/AU2003296677A1/en not_active Abandoned
- 2003-12-18 CN CNA2003801062325A patent/CN1726052A/en active Pending
- 2003-12-18 MX MXPA05006631A patent/MXPA05006631A/en not_active Application Discontinuation
-
2005
- 2005-05-30 ZA ZA200504389A patent/ZA200504389B/en unknown
- 2005-05-30 ZA ZA200504388A patent/ZA200504388B/en unknown
- 2005-07-18 NO NO20053496A patent/NO20053496L/en not_active Application Discontinuation
- 2005-07-18 NO NO20053497A patent/NO20053497L/en not_active Application Discontinuation
-
2012
- 2012-07-12 US US13/547,286 patent/US20120276278A1/en not_active Abandoned
- 2012-10-10 US US13/648,379 patent/US8637071B2/en not_active Expired - Lifetime
-
2013
- 2013-12-20 US US14/135,666 patent/US20140112994A1/en not_active Abandoned
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DE102005044360A1 (en) * | 2005-09-09 | 2007-03-15 | Aesculap Ag & Co. Kg | Medicinal technical-product, useful as e.g. temporary or durable implant and as biocides, comprises anti-microbial equipment from a complex material from metal-nanoparticle and macromolecules |
US8858972B2 (en) | 2005-09-09 | 2014-10-14 | Aesculap Ag | Antimicrobial medicotechnical product, process for its preparation and use |
US8217220B2 (en) | 2005-10-05 | 2012-07-10 | Sca Hygiene Products Ab | Absorbent article comprising a thin film including an active agent |
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US7520923B2 (en) | 2007-03-22 | 2009-04-21 | Mvp Textiles & Apparel, Inc. | Antimicrobial filtration article |
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US9395468B2 (en) | 2012-08-27 | 2016-07-19 | Ocular Dynamics, Llc | Contact lens with a hydrophilic layer |
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US10330951B2 (en) | 2013-11-15 | 2019-06-25 | Tangible Science, Llc | Contact lens with a hydrophilic layer |
US11433628B2 (en) | 2013-11-15 | 2022-09-06 | Tangible Science, Inc. | Contact lens with a hydrophilic layer |
US10525170B2 (en) | 2014-12-09 | 2020-01-07 | Tangible Science, Llc | Medical device coating with a biocompatible layer |
US11260150B2 (en) | 2014-12-09 | 2022-03-01 | Tangible Science, Inc. | Medical device coating with a biocompatible layer |
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