Patent application number | Description | Published |
20090043398 | METHOD OF PRODUCING GRADIENT ARTICLES BY CENTRIFUGATION MOLDING OR CASTING - The present invention provides a method for producing articles with a gradient of density, porosity and/or concentration by subjecting a viscous material to centrifugation during production of the article. The viscous material may be a composite material comprising a hydrogel. The viscous material can be molded or cast into the article. In certain embodiments, the viscous material is used to create an articulating surface implant such as a replacement plug, a knee spacer, or a spinal disc. The article may also be an implant such as a shoulder implant or other socket type implant that is produced by centrifuging in two axes which produces a gradient relative to both axes of rotation. | 02-12-2009 |
20090131590 | REACTIVE COMPOUNDING OF HYDROGELS - This invention provides methods to form modified hydrogel materials using reactive compounding. The method includes mixing a hydrogel material with a plasticizer in a compounding apparatus. During mixing, a reactive chemical compound is added to the mixture that reacts with the hydrogel material to form a modified hydrogel material. | 05-21-2009 |
20090175919 | CHEMICAL COMPOSITION OF HYDROGELS FOR USE AS ARTICULATING SURFACES - The present invention provides a hydrogel composition comprising at least one polymer with functional groups including alcohol groups, acid groups, and amide groups and where the ratio of the functional alcohol groups to functional acid groups in the hydrogel composition ranges from about 16:1 to about 3:2. The present invention also provides a method of repairing an articulating surface in a body using the inventive composition. The inventive hydrogel composition is created by blending two or more polymers to achieve the desired ratio of functional groups, reacting at least one polymer with a reagent that results in the formation of alcohol, acid, and/or amide functional groups of the desired ratio, and/or polymerizing at least one monomer to achieve the desired ratio of functional groups. | 07-09-2009 |
20140024736 | POLYMER ARTICLES HAVING CHEMICALLY BONDED AGENTS AND METHODS OF MAKING THE SAME - Modified polymeric articles having modifying agents dispersed within and bonded to an interior region of the article. Methods of modifying polymer materials used to form polymeric articles, and methods of making polymeric articles from polymer particles having modifying agents bonded thereto. | 01-23-2014 |
20140031496 | MODIFIED POLYMERIC MATERIALS AND METHODS OF MODIFYING POLYMERIC MATERIALS - Methods of forming polymeric articles using plasma treated polymer resins, and orthopedic implants comprising a polymeric article wherein the polymeric article has reactive groups bonded to polymer molecules in an interior region of the polymeric article. | 01-30-2014 |
20140147814 | BONE GRAFT CONTAINMENT DEVICES - A flexible containment device can comprise a textile material including at least one of a woven material, a braided material, a knit material, a felt material, and an electrospun material, wherein the textile material includes a plurality of biocompatible strengthening fibers configured to engage a bone graft material and configured to remain in a patient. | 05-29-2014 |
20140180424 | BALL JOINT PROSTHESIS AND METHOD - A ball joint prosthesis can include a shell, having an outer articular surface of a first material and an open distal end, configured to receive a sealing receptacle. A volume of a second material, within the shell, can be more compressible than the first material. The ball joint prosthesis can have an effective compressibility that is intermediate between a compressibility of the first material and a compressibility of the second material. | 06-26-2014 |
20150250598 | ORTHOPEDIC SYSTEM AND METHODS FOR TREATING AN INFECTION - Orthopedic systems and methods for treating an infection are disclosed. An implant can include an exterior shell having an overall shape that defines a shape of the implant and an interior portion. At least a part of the interior portion can be hollow and configured to contain a base material including an antimicrobial or antibiotic. The exterior shell of the implant can include a plurality of perforations formed in at least a part of the exterior shell, and the perforations can release the antimicrobial or antibiotic in the base material from the interior portion of the implant to treat an infection. The base material can include a bone cement, gel, foam or fiber. The implant can be configured for use as a temporary spacer or as a permanent revision implant. After implantation, additional materials can be delivered to the interior portion of the implant and released through the perforations. | 09-10-2015 |