Patent classifications
A61L29/145
Device having a switchable wet-dry lubricating coating
A lubricating coating including at least one polymer A, a cross-linker and at least one lubricating agent, and wherein a portion of the at least two reactive groups of the cross-linker are covalently linked to the polymer A to form a three-dimensional network in which the lubricant is incorporated, and wherein at the same time another portion of the reactive groups of the cross-linker are covalently linked to the surface of the device or to the optional adhesion layer on the surface of the device.
WETTING AGENT FORMULATION
A first alternative to a composition for preventing or retarding degradation of a functional coating on a medical device comprising an antioxidant selected from gallic acid or a derivative thereof. A second alternative to a composition for preventing or retarding degradation of a functional coating on a medical device includes carboxymethyl cellulose or a derivative or salt thereof. The use of the compositions for preventing or retarding degradation of a functional coating on a medical device from reactive species generated during exposure of radiation, and a wetting agent comprising the compositions, are also provided. The wetting agent prevents or retards the hydrolytic degradation of the coating during the intended shelf-life of the wetted coated product.
Synergistic antibacterial activity of medium polarity oils in combination with antibacterial agents on bacterial biofilms
The compositions of the present invention comprise at least one medium polarity oil and at least one antibacterial agent, the combination of which produces a synergistic antibacterial effect against bacterial biofilms. Methods are disclosed for the reduction of bacteria in and/or elimination of bacterial biofilms on biological and non-biological surfaces, as well as methods for the treatment of wounds, skin lesions, mucous membrane lesions, and other biological surfaces infected or contaminated with bacterial biofilms.
MEDICAL DEVICE COATING WITH A BIOCOMPATIBLE LAYER
Medical devices with a hydrogel layer covalently attached to a portion of the outer surface of the medical device are provided along with methods for applying the coating. The hydrogel layer can include a first polymer species comprising polyethylene glycol (PEG) and a second polymer species. Examples of the second polymer species include PEG and polyacrylamide (PAM). The first and second species can be at least partially cross-linked. Methods for forming the hydrogel coatings on the medical devices are provided including nucleophilic conjugate reactions, such as Click reactions.
Coating composition, method of making a hydrophilic coating on a substrate, and medical device comprising such coating
The disclosure relates to a coating composition comprising a polymerizable compound of formula [1], wherein G is a residue of a hydrophobic hydroxy-functional oligomer, n is 1-10, each R1 independently is a residue of a C.sub.6-C.sub.20 aliphatic, cycloaliphatic, or aromatic hydrocarbon compound, and Z is a moiety having a polymerizable group; Formula [1] a hydrophilic polymer; a photo-initiator; optionally one or more further components, and a solvent. The polymerizable compound of formula [1] is typically present in an amount of 2.0-30 mass % based on total dry mass of the composition. Such coating composition can be made into a well-adhering single-layer hydrophilic coating on a surface of polymer substrates without providing a primer layer or chemically modifying the surface of the substrate. Upon wetting, the coating shows excellent lubricity and durability. In further aspects, the disclosure provides a method of applying a hydrophilic and optionally lubricious coating to an article; and an article like a medical device having on at least part of its surface a single-layer, hydrophilic and optionally lubricious coating, like a catheter, guidewire, or a delivery device for an implant.
##STR00001##
Coating composition comprised of a hydrophilic crosslinker, a hydrophobic crosslinker and optionally a hydrogel and methods of making and using the same
The present invention relates to coatings for devices such as medical devices that are useful for coating a variety of different types of material surfaces, including polymer and metal surfaces. The present invention also includes the method of using the coated device and methods to make the coated device and coating.
Medical device coating with a biocompatible layer
Medical devices with a hydrogel layer covalently attached to a portion of the outer surface of the medical device are provided along with methods for applying the coating. The hydrogel layer can include a first polymer species comprising polyethylene glycol (PEG) and a second polymer species. Examples of the second polymer species include PEG and polyacrylamide (PAM). The first and second species can be at least partially cross-linked. Methods for forming the hydrogel coatings on the medical devices are provided including nucleophilic conjugate reactions, such as Click reactions.
SYNTHESIS OF NANO AGGREGATE OF CHITOSAN MODIFIED BY SELF-ASSEMBLING PEPTIDE AND APPLICATION THEREOF TO PROTEIN DELIVERY
A nanogel comprising a self-organizing peptide, a chitosan, and polyethylene glycol.
Electrically-Responsive Hydrogels
Implants comprising electrically-responsive hydrogel are described. Systems to provide electricity to induce response in hydrogel-containing implants are described. Methods for utilizing said system and methods for utilizing said hydrogel-containing implants are described.
Methods and compositions relating to reporter gels for use in MRI techniques
The present invention describes methods and compositions for non-invasively assessing the molecular structure of biocompatible hydrogels using MRI analysis. It is shown that biocompatible hydrogels prepared from polymerizing macromolecules that are attached to a paramagnetic, superparamagnetic or ferromagnetic contrast agents form reporter gels wherein monitoring of the changes in the structure of the hydrogels by MRI is facilitated by the presence of such paramagnetic, superparamagnetic or ferromagnetic agents in the biocompatible hydrogel.