Abstract:
Compositions, methods, and kits are provided for sealing applications. Compositions are prepared by combining a first cross-linkable component with a second cross-linkable component to form a porous matrix having interstices, and combining the porous matrix with a hydrogel-forming component to fill at least some of the interstices. The compositions exhibit minimal swelling properties.
Abstract:
Lacrimal implants, methods of making lacrimal implants, and methods of treating ocular, respiration or other diseases or disorders using lacrimal implants are disclosed.
Abstract:
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.
Abstract:
The disclosure provides a method for cleaning an implanted medical device. In one embodiment, the method includes providing a medical device including a membrane; wherein the membrane comprises a thermoresponsive hydrogel including N-isopropylacrylamide (NIPAAm) or poly(N-isopropylacrylamide) (PNIPAAm), and a volume phase transition temperature (VPTT). The method also includes implanting the medical device into a target area; wherein the membrane temperature is maintained at substantially the same temperature as the target area; wherein temperature fluctuations within the target area that approach, meet and/or exceed the volume phase transition temperature induce deswelling or relative deswelling in the membrane and temperature fluctuations within the target area that are relatively lower and/or approach and/or fall below the volume phase transition temperature induce swelling or relative swelling in the membrane.
Abstract:
The present invention relates to formulations for administration to a joint fat pad of a subject, and to methods of treating joint pain, inflammation or disease. The disclosed formulations are intended for local administration to the joint fat pad to provide sustained release of a therapeutic agent to the joint cavity and surrounding tissues. The joint may be an arthritic joint, an injured joint or a surgically replaced joint. The therapeutic agent may be an analgesic agent, an anti-inflammatory agent or an immunosuppressive agent. A single administration of the formulation to the joint fat pad delivers a therapeutically effective amount of the therapeutic agent with reduced systemic exposure relative to a single systemic or a single intra-articular administration of a therapeutic dose of an identical therapeutic agent.
Abstract:
A method for preparing an environmentally-responsive hydrogel for implantation in an animal comprising: a) combining at least one ethylenically unsaturated macromer, at least one macromer or monomer comprising at least one ionizable functional group, at least one polymerization initiator, and at least one solvent to prepare a hydrogel; b) treating said hydrogel to prepare an environmentally-responsive hydrogel that is responsive at physiological conditions.