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1062 results about "Hydrophilic coating" patented technology
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Hydrophilic coatings are employed to reduce surface friction and enhance lubricity. The term “hydrophilic” means that it is water loving. In other words, it readily wets out when exposed to moisture. Most hydrophilic coatings consist of a loosely cross-linked polymer coating that will readily uptake liquid...
Nonwoven Having Durable Hydrophilic Coating
InactiveUS20110268932A1Promote migrationLamination ancillary operationsDecorative surface effectsHydrophilic coatingTrace Amounts
A nonwoven material coated with an amine-polyether silicone. The coating composition may include a wetting agent, an acid, and / or a defoamer. The nonwoven may be incorporated into a disposable absorbent article. The disposable absorbent article may include at least trace amounts of a mineral oil. The coating of the nonwoven may be durable even in the presence of mineral oil.
Owner:THE PROCTER & GAMBLE COMPANY
Hydrophilic coated medical device
A medical device comprises a main body, a therapeutic agent and a radiation-curable hydrophilic coating. The hydrophilic coating allows for easy insertion of medical devices, which may include catheters, cannulae, stents, wire guides, and the like. The medical device may include more than one therapeutic agent.
Owner:COOK INC
Single use endoscopic imaging system
An endoscopic imaging system includes a reusable control cabinet having a number of actuators that control the orientation of a lightweight endoscope that is connectable thereto. The endoscope is used with a single patient and is then disposed. The endoscope includes an illumination mechanism, an image sensor, and an elongate shaft having one or more lumens located therein. An articulation joint at the distal end of the endoscope allows the distal end to be oriented by the actuators in the control cabinet. The endoscope is coated with a hydrophilic coating that reduces its coefficient of friction and because it is lightweight, requires less force to advance it to a desired location within a patient.
Owner:SCI MED LIFE SYST
Rapid Diffusion of Large Polymeric Nanoparticles in the Mammalian Brain
ActiveUS20130183244A1Reduce deliveryHigher drug payloadPowder deliveryNervous disorderGene deliveryHydrophilic coating
Non-adhesive particles as large as 110 nm can diffuse rapidly in the brain ECS, if coated with hydrophilic coatings such as PEG coatings and preferably having neutral surface charge. The ability to achieve brain penetration with larger particles will significantly improve drug and gene delivery within the CNS since larger particles offer higher drug payload, improved drug loading efficiency, and significantly longer drug release durations.
Owner:THE JOHN HOPKINS UNIV SCHOOL OF MEDICINE
Al2O3 atomic layer deposition to enhance the deposition of hydrophobic or hydrophilic coatings on micro-electromechcanical devices
Micro-mechanical devices, such as MEMS, having layers thereon, and methods of forming the layers, are disclosed. In one aspect, a method may include forming a layer including an oxide of aluminum over at least a portion of a micro-mechanical device, and coating the layer by bonding material to surface hydroxyl groups of the layer. In another aspect, a method may include introducing a micro-mechanical device into an atomic layer deposition chamber, and substantially filling nanometer sized voids of the micro-mechanical device by using atomic layer deposition to introduce material into the voids. In a still further aspect, a method may include introducing an alkylaminosilane to a micro-mechanical device having a surface hydroxyl group, and bonding a silane to the micro-mechanical device by reacting the alkylaminosilane with the surface hydroxyl group.
Owner:UNIV OF COLORADO THE REGENTS OF
Recovery of rare cells using a microchannel apparatus with patterned posts
ActiveUS20060160243A1Flow interruptionEfficient captureBioreactor/fermenter combinationsBiological substance pretreatmentsHydrophilic coatingFlow disruption
A microflow apparatus for separating or isolating cells from a bodily fluid or other liquid sample uses a flow path where straight-line flow is interrupted by a pattern of transverse posts. The posts are spaced across the width of a collection region in the flow path, extending between the upper and lower surfaces thereof; they have rectilinear surfaces, have arcuate cross-sections, and are randomly arranged so as to disrupt streamlined flow. Sequestering agents, such as Abs, are attached to all surfaces in the collection region via a hydrophilic coating, preferably a hydrogel containing isocyanate moieties or a PEG or polyglycine of substantial length, and are highly effective in capturing cells or other targeted biomolecules as a result of such streamlined flow disruption.
Owner:BIOCEPT INC
Stents with drug eluting coatings
The present invention relates generally to medical devices, preferably a stent, having a drug eluting surface coated or covered with a coating of particles comprising at least an outer layer, an inner layer, and a core comprising a therapeutic agent. Specifically, the invention relates to medical devices having a hydrophilic coating comprising particles with a hydrophilic outer layer, a hydrophobic inner layer, and a core comprising a hydrophobic therapeutic agent, as well as medical devices having a hydrophobic coating comprising particles with a hydrophobic outer layer, a hydrophilic inner layer, and a core comprising a hydrophilic therapeutic agent. The coating, outer layer, and inner layer are preferably biodegradable and capable of providing sustained release of the therapeutic agent over a time period. The invention also relates to methods of making and methods of using the coated or covered medical device.
Owner:SCI MED LIFE SYST +1
Silicone hydrogel lens with a covalently attached coating
ActiveUS20110134387A1Good coating durabilityIncreased durabilityOptical articlesEye diagnosticsHydrophilic coatingPolymer chemistry
The invention provides a cost-effective method for making a silicone hydrogel contact lens having a hydrophilic coating thereon that is covalently attached to the lens and has a good hydrophilicity, intactness and durability. The invention also provides a silicone hydrogel contact lenses having a hydrophilic coating consisting of a prime coating covalently attached to the contact lens and a top coating covalently attached to the prime coating.
Owner:ALCON INC
Endoscope with actively cooled illumination sources
ActiveUS7413543B2Inexpensive and easy to assembleRemove heatSurgeryEndoscopesHydrophilic coatingActive cooling
Owner:SCI MED LIFE SYST
Hydrophilic coatings for medical implements
ActiveUS7015262B2Easy extractionSpeed up the flowSurgeryPretreated surfacesWater basedHydrophilic coating
Compositions, methods, devices and kits utilizing water-based hydrophilic coating formulations on medical implements. The composition for applying a coating comprises a sulfonated polyester, water, and a surface active agent. Methods for coating a medical implement comprise providing an aqueous dispersion comprising sulfonated polyester and surface active agent, contacting the medical implement with the aqueous dispersion, and drying the medical implement. Methods for acquiring a sample of bodily fluid from a patient comprise coating a needle with a sulfonated polyester, penetrating the needle into the patient, and drawing bodily fluid through the needle.
Owner:LIFESCAN IP HLDG LLC
Multilayer materials
InactiveUS6623747B1Improve comfortReducing rate and extentCoatingsOptical partsHydrophilic coatingContact lens
The invention is directed to a composite material, especially a biomedical device, e.g. an ophthalmic device, preferably a contact lens, with one or more wettable surfaces capable of holding a continous layer of aqueous fluid thereon which composite material comprises a bulk material and a hydrophilic coating characterized in that the hydrophilic coating consists of a carbohydrate attached covalently to reactive groups at the surface of the bulk material, either directly or via functional groups of an oligofunctional compound, said oligofunctional compound in turn having functional groups being capable of reacting with said reactive groups at the surface of the bulk material and with the carbohydrate, wherein said reactive groups are either inherently (a priori) present in the bulk material or wherein said reactive groups have been attached to the surface of the bulk material by a plasma surface preparation, as well as to a process of manufacture of such a composite material.
Owner:NOVARTIS AG
Articles with hydrophilic coating
InactiveUS6866936B2Favorable and associative interactionImprove wet strengthNon-fibrous pulp additionLiquid surface applicatorsWater basedHydrophilic coating
A water-based coating composition suitable for preparing hydrophilic surfaces on various articles is provided which includes a supporting polymer having functional moieties capable of undergoing crosslinking reactions, said supporting polymer soluble in or emulsified in an aqueous based medium; and a hydrophilic polymer, said hydrophilic polymer associated with the supporting polymer. The composition is characterized in that, when crosslinked at the functional moieties, the supporting polymer forms a three-dimensional network which substantially minimizes disassociation of the hydrophilic polymer.
Owner:SURFACE SOLUTIONS LAB
Silicone hydrogel lens with a crosslinked hydrophilic coating
ActiveUS20130118127A1Increased durabilitySpectales/gogglesPackage sterilisationHydrophilic coatingPolymer science
The invention is related to a cost-effective method for making a silicone hydrogel contact lens having a crosslinked hydrophilic coating thereon. A method of the invention involves autoclaving, in a sealed lens package, a silicone hydrogel contact lens having a base coating of polyacrylic acid thereon in an aqueous solution in the presence of a water-soluble, crosslinkable hydrophilic polymeric material having epoxide groups, for a period of time sufficient to covalently attach the crosslinkable hydrophilic polymeric material onto the surface of the silicone hydrogel contact lens through covalent linkages each formed between one epoxide group and one of the carboxyl groups on and / or near the surface of the silicone hydrogel contact lens.
Owner:ALCON INC
Recovery of rare cells using a microchannel apparatus with patterned posts
InactiveUS20060252087A1Useful in detectionBioreactor/fermenter combinationsBiological substance pretreatmentsFlow disruptionHydrophilic coating
A microflow apparatus for separating or isolating cells from a bodily fluid or other liquid sample uses a flow path where straight-line flow is interrupted by a pattern of transverse posts. The posts are spaced across the width of a collection region in the flow path, extending between the upper and lower surfaces thereof; they have rectilinear surfaces, have arcuate cross-sections, and are randomly arranged so as to disrupt streamlined flow. Sequestering agents, such as Abs, are attached to all surfaces in the collection region via a hydrophilic coating, preferably a hydrogel containing isocyanate moieties or a PEG or polyglycine of substantial length, and are highly effective in capturing cells or other targeted biomolecules as a result of such streamlined flow disruption.
Owner:BIOCEPT INC
Vapor hydration of a hydrophilic catheter in a package
ActiveUS20060163097A1Little and no possibility of liquid spillageEasy to handleDispensing apparatusDiagnosticsHydrophilic coatingBiological activation
Owner:HOLLISTER INCORPORAED
Selective membrane having a high fouling resistance
InactiveUS6913694B2Improve antifouling performanceImprove the immunitySemi-permeable membranesSynthetic resin layered productsEpoxyCross-link
Owner:SAEHAN INDS CO LTD
Silicone hydrogel lens with a grafted hydrophilic coating
ActiveUS8409599B2Easy to implementMinimal orDental implantsPackage sterilisationHydrophilic coatingRoom temperature
Owner:ALCON INC
Hydrophilic coatings for medical implements
InactiveUS7553511B2Speed up the flowFree from damageGuide needlesCosmetic preparationsHydrophilic coatingPolyester
Compositions, methods, devices and kits utilizing water-based hydrophilic coating formulations on medical implements. The composition for applying a coating comprises a sulfonated polyester, water, and a surface active agent. Methods for coating a medical implement comprise providing an aqueous dispersion comprising sulfonated polyester and surface active agent, contacting the medical implement with the aqueous dispersion, and drying the medical implement. Methods for acquiring a sample of bodily fluid from a patient comprise coating a needle with a sulfonated polyester, penetrating the needle into the patient, and drawing bodily fluid through the needle.
Owner:LIFESCAN IP HLDG LLC
Method and system for intravesicular delivery of therapeutic agents
InactiveUS20040260272A1High molecular weightReduce undesired micturitionSurgeryMedical devicesElastomerHydrophilic coating
A therapeutic agent delivery implant for implantation into a patient's body comprises a resilient or flexible, at least partially hydrophobic reticulated elastomeric support scaffold; and a hydrophilic coating arranged on said scaffold, wherein said coating contains one or more therapeutic agents for release within the patient. Optionally the coating can contain microspheres or enzymes. In a preferred embodiment, the scaffold comprises a hydrophobic polyurethane, the coating comprises a hydrophilic polyurethane, and the implant has a hemispherical, bullet, football, cylindrical, spherical, or irregular shape. The implant can be delivered through a rigid or flexible delivery instrument that deploys the implant at a desirable site, whereby the implant expands to a size and shape substantially similar to its size and shape before insertion.
Owner:THE BIOMERIX CORP
Multifunctional metal-graphite nanocrystals
InactiveUS20080213189A1High resolutionShrink tumorPowder deliveryInorganic active ingredientsMRI contrast agentPolyethylene glycol
Disclosed are nanocrystals comprising metals and metal alloys, which are formed by a process that results in a layer of graphite in direct contact with the metallic core. The nanocrystals may be used in vivo as MRI contrast agents, X-ray contrast agents, near IR (NIR) heating agents, drug delivery, protein separation, catalysis etc. The nanocrystals may be further functionalized with a hydrophilic coating, e.g., phospholipid-polyethylene glycol, which improves in vivo stability. The process comprises chemical vapor deposition of metals adsorbed onto silica as a fine powder, in conjunction with a carbon containing gas, which coats the metal particles. The silica is then etched away. Preferred metals include iron, gold, cobalt, platinum, ruthenium and mixtures thereof, e.g., FeCo and AuFe. The process permits control of the alloy compositions, size, and other characteristics.
Owner:THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIV
Composite material comprising layered hydrophilic coatings
The present invention provides a composite material comprising a support member that has a plurality of pores extending therethrough, a first polymer which durably coats the pores of the support member, the first polymer layer having both hydrophobic and hydrophilic properties, and a second polymer layer disposed on the surface of the first polymer layer, the second polymer being more hydrophilic than the first polymer layer. The present invention also provides a process for preparing the composite material, and its use as a separation medium.
Owner:MCMASTER UNIV
Coating system for sag resistant formaldehyde-free fibrous panels
ActiveUS20070055012A1Low costMaintain resistanceConstruction materialSynthetic resin layered productsFiberHydrophilic coating
A coating system on a fibrous substrate, such as a fibrous ceiling panel, having a first surface and a second surface. A first coating is disposed on the first surface of the substrate and includes a first binder and a first filler material. A second coating may be disposed on the second surface of the substrate. The second coating includes a second binder and a second filler material. The first coating and the second coating expand at different rates in the presence of humidity in order to help prevent sagging of the substrate in presence of humidity. The first coating is preferably a hydrophobic coating having a large particle size, high elastic modulus filler material. The second coating is preferably a hydrophilic coating having a lower concentration of high elastic modulus material and a polymer having a hydrophilic moiety.
Owner:AWI LICENSING
Catheter assembly with bactericidal effect
InactiveUS20060240069A1Reduce decreaseSimple procedureBiocidePharmaceutical containersUrinary catheterOrganic acid
A use in a medical device of at least one salt of organic acid(s), and preferably a benzoate or a sorbate, as an antimicrobial agent is disclosed, and in particular for the manufacturing of an antimicrobial coating for a medical device for the prevention of bacterial infection. This is very useful in medical devices having a hydrophilic coating, such hydrophilic urinary catheters. It is further preferred that the pH of the hydrophilic coating is controlled to be in the range 4.0-8.0, and preferably in the range 5.0-6.0. It is also preferred that the pH of the hydrophilic coating is controlled to be below 7.0. The pH of the hydrophilic coating could be controlled by means of a pH buffer, and preferably a citrate or phosphate buffer. Specifically, the provision of the salt of organic acid in combination with a pH buffer has proven surprisingly efficient for inhibition of bacterial growth, and for prevention of bacterial infections.
Owner:ASTRA TECH SE
Photo-induced hydrophilic article and method of making same
InactiveUS20070218265A1Easy to cleanEasy to wipeSynthetic resin layered productsVacuum evaporation coatingHydrophilic coatingSpray pyrolysis
Methods and articles are disclosed in which a substrate is provided with a photo-induced hydrophilic surface by forming a photo-induced hydrophilic coating on the substrate by spray pyrolysis, chemical vapor deposition, or magnetron sputter vacuum deposition. The coating can have a thickness of 50 Å to 500 Å, a root mean square roughness of less than 5, preferably less than 2, and photocatalytic activity of less than 3.0×10−3 cm−1 min−1±2.0×10−3 cm−1 min−1. The substrate includes glass substrates, including glass sheets and continuous float glass ribbons.
Owner:VITRO FLAT GLASS LLC
Al2O3 atomic layer deposition to enhance the deposition of hydrophobic or hydrophilic coatings on micro-electromechanical devices
Owner:UNIV OF COLORADO THE REGENTS OF
Hydrophilic coatings with tunable composition for drug coated balloon
InactiveUS20110144577A1Minimized drug lossImproved drug recoveryBiocideSurgeryHydrophilic coatingPlasticizer
A tunable coating formulation is described for a drug delivery balloon comprising a therapeutic agent, an excipient and a plasticizer. The tunable coating includes a first therapeutic agent and a first excipient, and can have a second therapeutic agent and a second excipient. The first and second therapeutic agents have different dissolution rates during balloon inflation and therefore provide a coating that is tunable. The plasticizer in the formulation has a weigh ratio of excipient to plasticizer below 1:0.1.
Owner:ABBOTT CARDIOVASCULAR
Assembly for the preparation of a medical device having a coating comprising hydrogen peroxide
InactiveUS20060263404A1Maintain good propertiesEliminate the effects ofPeroxide active ingredientsPretreated surfacesUrinary catheterUpper urinary tract infection
The present invention provides an assembly for the preparation of a medical device having a porous coating comprising hydrogen peroxide. Particularly interesting medical devices are catheters (such as urinary catheters), endoscopes, laryngoscopes, tubes for feeding, tubes for drainage, guide wires, condoms, urisheaths, barrier coatings e.g. for gloves, stents and other implants, extra corporeal blood conduits, membranes e.g. for dialysis, blood filters, devices for circulatory assistance, dressings for wound care, and ostomy bags. The coating is in particular a hydrophilic coating formed from cross-linked polyvinylpyrrolidone. In one embodiment, the assembly holds a dry catheter element in one compartment of a package and an aqueous hydrogen peroxide solution in another compartment. The solution may also comprise stabilizers, e.g. chelators, and osmolality increasing agents. The catheter for insertion in the urethra is useful for the treatment, alleviation or prophylaxis of microbial infections such as urinary tract infections (UTI).
Owner:COLOPLAST AS
Tear open package for hydrophilic-coated catheter
ActiveUS20050199521A1Maintaining barrier propertyMaintaining package strengthWrappersDispensing apparatusHydrophilic coatingBiomedical engineering
A tear open package for a catheter having an insertion end and a funnel end includes a pair of thin elongated sheets of gas impermeable material joined about their edges by a perimeter heat seal. The elongated sheets of material form a catheter-receiving cavity in which the catheter insertion end is near one end of the cavity and the funnel end is near the other end of the cavity. The perimeter heat seal includes at least an insertion end heat seal, a funnel end heat seal, and a pair of side heat seals which extend along each side of the package from the insertion end heat seal to the funnel end heat seal. The elongated sheets of material each include a tear line extending at least from one side of the package toward the other side of the package through at least one of the side heat seals. The tear lines extend between the catheter insertion end and the insertion end heat seal for opening at least the insertion end of the package by controlled tearing for removal and use of the catheter.
Owner:HOLLISTER INCORPORAED
Reverse osmosis membrane and process
A reverse osmosis membrane, and methods for making and using the membrane. The membrane has a continuous, defect-free, non-porous, hydrophilic coating that reduces the susceptibility to fouling.
Owner:THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
Hydrophilic coatings, methods for depositing hydrophilic coatings, and improved deposition technology for thin films
The invention provides certain embodiments that involve sputtering techniques for applying a mixed oxide film comprising silica and titania. In these embodiments, the techniques involve sputtering at least two targets in a common chamber (e.g., in a shared gaseous atmosphere). A first of these targets includes silicon, while a second of the targets includes titanium. Further, the invention provides embodiments involving a substrate bearing a hydrophilic coating, which can be deposited by sputtering or any other suitable thin film deposition technique. The invention also provides techniques and apparatuses useful for depositing a wide variety of coating types. For example, the invention provides thin film deposition technologies in which sputtering apparatuses or other thin film deposition apparatuses are employed.
Owner:CARDINAL CG
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