Patent application number | Description | Published |
20090008365 | Microtextured Implants and Methods of Making Same - The present invention concerns a process for etching metal by contacting the metal with a solution comprising hydrogen chloride and a persulfate salt; wherein the solution has a hydrogen chloride concentration of about 3 to about 11.7 moles/liter and a molar ratio of hydrogen chloride to persulfate salt of about 4:1 to about 134:1, wherein the persulfate salt is dissolved in the solution with the use of heat input. | 01-08-2009 |
20100021520 | BIOMATERIAL IMPLANTS - A biomaterial implant includes a mineralized collagen fibril scaffold. The collagen fibrils are formed from type I collagen monomers and display native-D band periodicity. The implant has load bearing capabilities and can be resorbed when implanted in a mammal's body. | 01-28-2010 |
20100268227 | Methods and Devices for Bone Attachment - Methods and devices directed to attaching a bone to an implant are disclosed. Some aspects are directed to a modified substrate, such as a mineralized collagenous scaffold, that can be part of an implant. The substrate can have a porous structure that includes a collagen-based material and a calcium-phosphate-based material. In some cases, the collagen is disposed as collagen fibrils, and hydroxyapatite can be coated onto the fibrils and the porous structure. The porous structure can be three-dimensional, and can promote bone in-growth thereto. One or more bioactive agents can be coupled to the modified substrate, which can further promote bone growth. Further details regarding such modified substrates, and techniques for producing and utilizing such materials, are also disclosed. | 10-21-2010 |
20100268330 | Methods and Devices for Implants with Calcium Phosphate - Implants with a calcium phosphate containing layer are disclosed. The implants, which can have a metallic character (e.g., made from a cobalt chromium alloy), can include a surface that is exposed to one or more formulations that results in a chemical and/or physical modification. In some instances, the modified surface is texturized so as to include a plurality of surface pits. The average pit size opening can range, for example, from 40 nm to about 10 μm, and can include a plurality of average pit sizes in some cases. The modified surfaces can promote growth of a calcium phosphate layer, which can be accelerated relative to conventional techniques. Other variations of such implant surfaces, and methods of producing similar implant surfaces, are also discussed. | 10-21-2010 |
20100268346 | NANOTEXTURED COBALT-CHROMIUM ALLOY ARTICLES HAVING HIGH WETTABILITY AND METHOD OF PRODUCING SAME - The present invention relates to articles comprising a cobalt-chromium alloy and bearing a surface oxide layer that has a thickness of 20 to 40 Å, is enriched in chromium relative to said article, and includes a plurality of indentions that, independently, have a diameter of from about 40 to about 500 nm. Such articles can be suitable for implantation in a mammal. | 10-21-2010 |
20100268347 | MICRO AND NANO SCALE SURFACE TEXTURED TITANIUM-CONTAINING ARTICLES AND METHODS OF PRODUCING SAME - The present invention relates to processes involving contacting articles that include titanium or titanium alloy with a solution comprising hydrochloric acid and chloride-containing compound for a time and at a temperature effective to form a plurality of indentions that, independently, have a diameter of from about 200 nm to 10 microns. | 10-21-2010 |
20110190902 | METHODS AND DEVICES FOR IMPLANTS WITH IMPROVED CEMENT ADHESION - Biomedical implants (e.g., orthopedic implants) with modified surfaces that can enhance a cement bond's strength (e.g., tensile, shear, and/or fatigue) are disclosed, along with methods of manufacturing and using such implants. The implants can exhibit a variety of physical, chemical, or process-derived features which can enhance cement bonding. For instance, the implant surface can exhibit particular roughness values, and/or be substantially free of non native material. Processes for producing such implants can include providing a first roughened implant surface, which can be produced, for example, by particle blasting. A treatment formulation can be applied to the first roughened surface to create a second roughened surface that exhibits enhanced cement bonding properties relative to the first roughened surface. In some instances, the first roughened surface and the second roughened surface can exhibit substantially similar R | 08-04-2011 |