Patent application number | Description | Published |
20090036984 | Artificial meniscus part and knee-joint prosthesis - The invention relates to an artificial meniscus part for a knee-joint prosthesis that has on an upper side at least one femoral joint surface for the movable mounting of an artificial, natural or machined condyle of a femur, wherein the at least one femoral joint surface is configured in the form of a depression facing away from the meniscus part wherein the depression has an anterior and a posterior end region and a width of the depression has a minimum between the anterior and the posterior end region. | 02-05-2009 |
20110071644 | Knee endoprosthesis - In a knee endoprosthesis comprising a tibia part, a femur part having two condylar surfaces, and a meniscus part arranged between the femur part and the tibia part, the meniscus part having on its upper side two bearing shells for receiving and mounting the condylar surfaces of the femur part and having on its underside a meniscus-bearing surface which rests in a displaceable manner on a tibia-bearing surface on the upper side of the tibia part, in order to allow as large a bending angle as possible, with best possible adaptation to the anatomy of the natural knee joint, it is proposed that the meniscus-bearing surface and the tibia-bearing surface each have a spherical projection or a spherical recess offset in a medial or a lateral direction in relation to their center, that the spherical projection on one of the two bearing surfaces engage the spherical recess of the other bearing surface and thereby form a ball bearing-like mounting of the meniscus part on the tibia part, and that in the lateral or medial part of the two bearing surfaces, these bearing surfaces form supporting areas bearing on each other, which are curved in a dorsal-ventral direction and have a radius of curvature there, which is greater than the radius of curvature of the spherical projection and the spherical recess by at least the factor 2.5. | 03-24-2011 |
20110184525 | Knee joint endoprosthesis - A knee joint endoprosthesis comprises a femoral component, a tibial component and a meniscal component mounted between the femoral component and the tibial component. The meniscal component is mounted on the tibial component for rotation about an axis of rotation extending at the medial side, a rotation guiding device being provided to force rotational movement of the meniscal component relative to the tibial component about the axis of rotation as a result of pivotal movement of the femoral component and the tibial component relative to each other about a pivot axis extending transversely to the axis of rotation. The rotation guiding device comprises interacting first and second guiding elements arranged or formed, on the one hand, on the femoral component and, on the other hand, on the tibial component. | 07-28-2011 |
20120203350 | KNEE JOINT ENDOPROSTHESIS - In accordance with the invention a knee joint endoprosthesis comprises a femoral component and a meniscal component mounted for movement relative to and on said femoral component. Said femoral component comprises a medial and a lateral condyle having a medial and a lateral condylar surface. Said meniscal component comprises a medial and a lateral joint surface on which the medial and lateral condylar surfaces bear at least partially. Said medial condyle and said medial joint surface are shaped so as to form a rotary joint with a rotary joint center. Moreover, a rolling motion guiding device is provided for defined rolling of the lateral condylar surface and the lateral joint surface on each other along a curved path which is defined in dependence upon an angle of flexion between femoral component and meniscal component and extends around the rotary joint center. | 08-09-2012 |
Patent application number | Description | Published |
20080248974 | Scale Inhibiting Well Treatment - This invention provides a method for inhibiting scale formation within a hydrocarbon producing system, said method comprising contacting said system with a copolymer formed from a diallyl ammonium salt and at least one other monomer. | 10-09-2008 |
20090170732 | SCALE INHIBITING WELL TREATMENT - Provided is a method for inhibiting scale formation within a hydrocarbon producing system, said method comprising contacting said system with a polymer formed from a diallyl ammonium salt, a monomer comprising one carboxylate group and a monomer comprising at least two carboxylate groups or an anhydride group. Also provided are hydrocarbon well treatment compositions and polymers for use in connection with the provided methods. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention. | 07-02-2009 |
20100167963 | WELL TREATMENT - The present invention provides a method for delivering a scale treatment agent to a hydrocarbon producing system, said method comprising: contacting said system with a foam comprising said scale treatment agent; and shutting said scale treatment agentin said system for at least 0.5 hour. | 07-01-2010 |
20100273682 | WELL TREATMENT - The present invention provides a method for increasing the retention of a scale inhibitor within a hydrocarbon producing system (e.g. a subterranean formation), said method comprising contacting said system with a polymer foamed from a diallyl ammonium salt and with said scale inhibitor, wherein said polymer formed from a diallyl ammonium salt has a molecular weight of greater than 50,000 (e.g. a molecular weight of 55,000 to 2,000,000). | 10-28-2010 |
Patent application number | Description | Published |
20130112576 | CONTAINER AND DEVICE COMPRISING SUCH A CONTAINER - A container with a cover wall, provided with at least one cover wall region which can be pierced to form a supply opening for supplying a liquid, a bottom wall, provided with at least one bottom wall region which can be pierced to form a discharge opening, at least one first chamber, in which a basic product is present, and a second chamber, in which an adjustment element is arranged that can be displaced from a position of rest to a puncturing position opening the piercable bottom wall region. The adjustment element is provided with at least one through-channel with an inlet opening and with an outlet opening opposite the piercable bottom wall region. The adjustment element is provided with a mixing chamber for mixing the liquid and the basic product. The mixing chamber is in fluid communication with the first chamber in the puncturing position of the adjustment element. | 05-09-2013 |
20130168305 | DEVICE FOR TREATING A LIQUID - A device for treating a liquid, including a container for collecting the liquid to be treated, including a first fastening unit which has the property that the unit develops a force of attraction under the action of a magnet or has the property of a magnet, and a cartridge for treating the liquid and which can be detachably fastened to the container, including a second fastening unit which has the property that the unit develops a force of attraction under the action of a magnet or has the property of a magnet. The first fastening unit and the second fastening unit interact such that the cartridge can be detachably fastened to the container. | 07-04-2013 |