| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 623200200 | Having rigid or semirigid pivoting occluder | 13 |
| 20090105812 | DEVICE AND METHOD FOR USE IN AORTIC VALVE DISEASE TREATMENT - A device is presented for assisting an insufficient aortic valve. The device is configured as an auxiliary valve and comprises a resilient deformable sleeve-like valve, deformation of the sleeve-like valve shifting the valve between its closed and opened positions. | 04-23-2009 |
| 20090118824 | Heart Valve Prosthesis - A heart valve prosthesis includes an annulus and a closing element having three leaflets. Hinge mechanisms are provided for attaching each leaflet to a top region of an interior surface of the annulus. In one example, the leaflets have convexo-concave surfaces and a non-uniform thickness. In another example, the top region of the interior surface has two sets of ledges which can be formed by intersecting three pairs of cylindrical surfaces. Ledges within each set are evenly spaced about the interior surface, a ledge in one set alternating with a ledge in the other set. In a further example, a bottom region of the interior surface is formed by intersecting three cylindrical surfaces. | 05-07-2009 |
| 20100100173 | VALVE APPARATUS, SYSTEM AND METHOD - A cardiac valve with a first anchor frame and a cover on the first anchor frame for unidirectional flow of a liquid through the valve. | 04-22-2010 |
| 20100174361 | PROSTHETIC VALVE WITH SEMI-RIGID AND FLEXIBLE LEAFLETS - The invention relates to a prosthetic valve for regulating fluid flow through a body lumen. The valve includes a frame and a valve member comprising at least one semi-rigid leaflet and at least one flexible leaflet. | 07-08-2010 |
| 20110118828 | Implantable Valve Prosthesis for Treating Venous Valve Insufficiency - A valve prosthesis for percutaneous placement within a vein is disclosed that includes a valve scaffold and a backflow barrier. The valve scaffold is of a shape memory or resilient material and the backflow barrier is a flap of flexible material attached to the valve scaffold. The valve prosthesis is operable to alternate between open and closed configurations in response to changes in retrograde blood flow pressure. In the open configuration, the valve scaffold has a frustoconical coil shape of consecutive windings with open spaces therebetween and the backflow barrier allows antegrade blood flow through the open spaces. In the closed configuration, the consecutive windings of the valve scaffold are collapsed such that the valve scaffold has a substantially flat profile and the backflow barrier covers the opens spaces of the flattened valve scaffold to prevent retrograde blood flow from leaking there through. | 05-19-2011 |
| 20110245916 | POLYMER VALVE AND PULSATILE CONDUIT-TYPE VAD USING THE SAME - A prosthetic blood valve comprises a base body having a hollow, opposing props extending from the body to partition opposing inclined ridges of the body to allow the inclined ridges and each top of the props to define the hollow and to form an upper surface of the body, and a singular leaflet attached to and along the inclined ridges and the prop tops to cover the hollow. The singular leaflet has a substantially central opening between the props and formed of a flexible material so a forward or outward blood flow passes through the opening and a reverse flow or backflow of blood leads to opposing leaflet portions around the opening being abuttingly pulled to each other to thereby prevent the blood backflow. | 10-06-2011 |
| 20110313515 | REPLACEMENT HEART VALVE - A replacement heart valve can have an expandable frame configured to engage a native valve annulus. A valve body can be mounted onto the expandable frame to provide functionality similar to a natural valve. The valve body has an upstream end and a downstream end, and a diameter at the downstream end is greater than a diameter at the upstream end. | 12-22-2011 |
| 20120239141 | TRANSLUMINAL CARDIAC BALL VALVE AND METHOD FOR DEPLOYMENT THEREOF - A transluminal cardiac valve includes an expandable generally tubular cage including when expanded a generally uniform central region, first and second ends each diametrically constricted relative to the central region, a blood impervious region extending from the first end of the cage to within the generally uniform central region, and an inflatable plunger freely disposed and captured within the cage when inflated. | 09-20-2012 |
| 20100131068 | Porous Titanium Modular Revision Patella System - A patellar implant includes a posterior portion and an anterior portion. The posterior portion can have a first radial sidewall that extends between an outboard face and an inboard face. The outboard face can include an articulating surface. The inboard face can include one of a stem and a recess, and one of an annular central hub and an annular radial pocket. The anterior portion can have a second radial sidewall that extends between a tissue engaging surface and a posterior portion engaging surface. | 05-27-2010 |
| 20100131069 | METHOD AND SYSTEM FOR PATELLA TENDON REALIGNMENT - A method and system provide and use a patellar implant. The patellar implant includes a superior portion, an inferior portion opposite to the superior portion, an anterior portion, at least one suture attachment configured to allow the patellar implant to be attached using at least one suture. The superior portion being configured to reside below a patellar tendon and to elevate and/or tilt the patellar tendon. The inferior portion is configured to be seated in proximity to a tibia. The anterior portion is between the superior portion and the inferior portion. The anterior portion is placed in proximity to a patella. In one aspect, the method includes inserting the implant beneath the patellar tendon and between the patella and a position at which the patellar tendon is affixed to the tibia. In this aspect, the method also includes attaching the implant using at least one suture. | 05-27-2010 |
| 20120101584 | PATELLAR IMPLANT WITH VARIABLE WEIGHTS FOR KNEE REPAIR SURGERY - The present disclosure relates to a device for repairing a patient patella. The device comprises a patellar trial piece and a patellar implant. The patellar trial piece has selectable variable weights to correct mechanical properties of the patient patella. Such mechanical properties to be corrected include a moment of inertia and/or a center of gravity of the patient patella. The patellar implant has embedded weights correspond to the variable weights of the patellar trial piece. In one embodiment, the patellar trial piece has a plurality of variable weights to be inserted into a plurality of holes in the patellar trial piece. The weights are made of different materials. In another embodiment, the patellar trial piece has a rounded top surface and a substantially flat bottom surface with a plurality of pegs. The pegs are selected from pegs with variable weights that are made of different materials. | 04-26-2012 |
| 20120172993 | KNEE PROSTHESIS HAVING COMMONLY-SIZED PATELLA COMPONENTS WITH VARYING THICKNESSES AND PEAK SURFACE DIAMETERS - An orthopaedic implant assembly includes a plurality of commonly-sized dome patella components. Each of the commonly-sized dome patella components may be provided in various thicknesses and/or peak surface diameters. | 07-05-2012 |
| 20120179264 | PROSTHETIC PATELLA - A system of prosthetic patellar components including first and second prosthetic patellar components having dissimilar perimeter shapes and which are interchangeably usable without altering the securement feature formed on the natural patella or the position of the apex of the articulating surface of the prosthetic patella is described. A keyed securement feature as well as a patellar implant having a single offset mounting post for facilitating the proper placement of a patellar prosthesis on a natural patella based on patella tracking are also described. | 07-12-2012 |
| 20130166034 | INSTRUMENTS FOR KNEE PLACEMENT - There are provided various embodiments of medical instruments to perform knee surgery. In one embodiment a finned platform for mounting a cutting block is provided. The finned platform can be used don either a femor or tibia to allow for the proper cuts when performing a knee surgery. In another embodiment, a tibial trial is shown having a fin. The fin is useful to reinforce the bone to reduce the risk of fracture during bone preparation. In another embodiment, a reamer is provided having a plurality of cutting flutes. It may be desirable to utilize a guide with the reamer to allow the reamer to cut a noncircular portion of the tibial bone. In yet another embodiment, a plurality of fixation pegs are provided on the tibial implant to allow for easy removal of such implant if a revision surgery becomes necessary. | 06-27-2013 |
| 20130166035 | PATELLAR IMPLANTS - A patellar implant is provided being of a two part construction having a strong base portion | 06-27-2013 |
| 20140005790 | KNEE PROSTHESIS HAVING CROSS-COMPATIBLE DOME AND ANATOMIC PATELLA COMPONENTS | 01-02-2014 |
| 20140148909 | PATELLA IMPLANT SYSTEMS AND PATELLA TRIALS FOR SELECTING SAME - A system includes a patella trial comprising a baseplate and an articular surface member configured to move along at least one of a medial-lateral axis or a superior-inferior axis of the baseplate; and an implant comprising a posterior articular surface and an anterior surface, wherein the anterior surface has a medial/lateral width with a midpoint, wherein the posterior articular surface has a posterior-most point, wherein an imaginary line extending through the posterior-most point is parallel to an imaginary line extending through the midpoint, and wherein a distance (I) is defined by measuring a length between the imaginary line extending through the posterior-most point and the imaginary line extending through the midpoint; wherein the implant is selected from a set of implants each having a different I, and wherein the chosen implant is selected based on an offset of the articular surface member relative to the baseplate on the patella trial. | 05-29-2014 |
| 20140277523 | MODULAR PATELLA TRIALS - A modular patella trial system and method is provided. A modular patella trial includes an articular element and at least one sizing element. The articular element has a length, a width, and a thickness. The articular element has a posterior and anterior surfaces separated by their thickness. The anterior surface has protrusions extending outwardly. Any of the sizing elements have a length, width, and thickness. Any such sizing elements have posterior and anterior surfaces separated by their thickness. At least one aperture extends through the posterior and anterior surfaces of the sizing elements. Such apertures are capable of receiving a corresponding protrusion of the articular element. The modular patella trial has a thickness substantially equal to the total of the thicknesses of the articular element and the sizing elements used in conjunction with the articular element. | 09-18-2014 |
| 623200220 | Annular support member includes projecting means for guiding occluder's pivoting motion | 1 |
| 20080275565 | ADJUSTABLE ABSORBER DESIGNS FOR IMPLANTABLE DEVICE - A system for manipulating energy transferred by members defining a joint. The system includes a first attachment structure configured to be attached to a first member of the joint and a second attachment structure configured to be attached to a second member of the joint. There is also an adjustable energy absorbing device attached to the first attachment structure and second attachment structure, wherein adjusting the energy absorbing device changes the load manipulating characteristics of the energy absorbing device. | 11-06-2008 |
| 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 |
| 20140156013 | Unlinked Implantable Knee Unloading Device - A system and method for sharing and absorbing energy between body parts. In one particular aspect, the system is an unlinked structure which facilitates absorbing energy between members forming a joint such as between articulating bones. | 06-05-2014 |
| 20140257501 | Joint Energy Absorbing System and Method of Use - An energy absorbing system, useful for attachment across a patient's joint, includes portions which are formed entirely or in part of a non-metallic material, e.g., PAEK, and thus reduces the possibility of the formation of metal debris in vivo. The system can include a flexibility-enhanced piston, retained within a spring, which reduces the possibility of tissue impingement with the system. | 09-11-2014 |
| 20140277531 | CANINE INTERNAL STIFLE STABILIZATION (CISS) SYSTEM - A Canine internal stifle stabilizing (CISS) system is provided as a three part modular, stifle stabilizing device that can be permanently or temporarily surgically implanted and attached onto the medial side of the distal femur and proximal tibia of quadrupeds. The stabilizing device is centered over the medial aspect of the quadruped stifle joint. The device includes three parts: a femoral component, a tibial component and an articular sliding insert component. The tibial and femoral components are fastened to the medial aspect of the femur and tibia by a varying number of fasteners. The distal end of the femoral component contains a ball and stem. The ball and stem is attached to the femoral component. The proximal tibial component has a rectangular space that accepts and holds the articular sliding insert component, such as by a pressure fit into the rectangular space provided on the proximal tibial component. The articular sliding insert component includes a groove that accepts and holds the ball that is attached to the femoral component. This locks the femoral and tibial components together. Also on the underside of the articular sliding insert component is a flange. In operation, the flange is located between the femoral and tibial components and has a bevelled edge (for example a ten (10) degree bevelled edge) on either side. This bevelled edge allows for a maximum internal and external rotation of the stabilized stifle joint. This device permits normal stifle joint movement in all planes, while continually providing support. | 09-18-2014 |
| 20160374814 | STABILIZED KNEE PROSTHESIS - A knee prosthesis includes a femoral component, a tibial component, and a coupling component interconnecting the femoral component and the tibial component. The tibial component includes ball. The femoral component is configured to move relative to the tibial component. The coupling component defines an internal cavity including a first spherical end portion and a second spherical end portion. The internal cavity is dimensioned to receive the ball of the tibial component. The ball is repositioned between the first spherical end portion and the second spherical end portion of the internal cavity upon movement of the femoral component relative to the tibial component. | 12-29-2016 |
| 623200230 | Strut projecting means | 1 |
| 20110029072 | Heart valve prosthesis and method of implantation thereof - A heart valve prosthesis can include a supported valve including a biological valve portion mounted within a support structure. The supported valve is configured to provide for substantially unidirectional flow of blood through the supported valve. The supported valve has inflow and outflow ends that are spaced axially apart from each other. A fixation support member includes inflow and outflow portions. The inflow portion of the fixation support member extends from a radially inner contact surface of the fixation support member radially outwardly and axially in a direction of the inflow end of the supported valve. The outflow portion of the fixation support member extends from the radially inner contact surface radially outwardly and axially in a direction away from the inflow portion of the fixation support member. The radially inner contact surface is attached to a radially outer surface of the supported valve adjacent the inflow end of the supported valve. The supported valve and the fixation support member are deformable between a reduced cross-sectional dimension and an expanded cross-sectional dimension thereof, whereby implantation of the heart valve prosthesis is facilitated. | 02-03-2011 |
| 20100286788 | ANTERIOR STABILIZED KNEE IMPLANT - A posterior cruciate ligament retaining knee implant prosthesis comprising a femoral component including a medial condyle and a lateral condyle separated from one another by an intercondylar channel adapted to accommodate throughput of a native cruciate ligament, both the medial condyle and the lateral condyle posteriorly terminate individually, the medial condyle including a medial condyle bearing surface and the lateral condyle including a lateral condyle bearing surface, the femoral component including an anterior cam, and a tibial component including a medial condyle receiver having a medial condyle receiver bearing surface, the tibial component also including a lateral condyle receiver having a lateral condyle receiver bearing surface, the tibial component also including an anterior post. | 11-11-2010 |
| 20130166036 | ORTHOPEDIC DEVICE TO BE PROVIDED ON THE KNEE JOINT - An implantable orthopedic device for the knee, comprising at least two parts which are not connected to each other, which are capable of being positioned opposite each other, and each of which comprise a surface engaging with that of the other part in the operative position, one part is attachable onto the tibia side, and the other part is attachable on the femur side such that, according to the invention, both of said parts are to be attached onto the sides and outer side of the knee joint, one part being mobile relative to the other along a plane that is parallel to the vertical median plane of the knee joint, and onto one of the inner or outer sides of the knee. | 06-27-2013 |
| 20130289730 | IMPLANTABLE BRACE FOR PROVIDING JOINT SUPPORT - Internal braces and methods of implanting same. A brace can be implanted on one side of a joint, or a pair of braces can be implanted, one on each opposite side of a joint. Each brace supports the joint over at least a portion of its range of motion. Distraction may be provided, or load sharing can be accomplished without distraction. Relative axial rotation of the bones connected by the brace may be permitted. One or more compliant members may be provided in the brace. | 10-31-2013 |
| 20140107793 | MOMENT INDUCED TOTAL ARTHROPLASTY PROSTHETIC - A prosthetic total knee replacement system comprises a distal femoral implant component, a tibial tray implant component and a mobile bearing tibial tray insert. The mobile bearing tibial tray insert is rotatably mountable on the tibial tray for articulation with the distal femoral implant component. The mobile bearing tibial tray insert rotates with respect to the tibial tray around a substantially vertical first rotational axis offset laterally from the medial-lateral centerline of the mobile bearing tibial tray insert and the distal femoral implant component rotates with respect to the tibial tray insert about a substantially vertical second rotational axis offset medially from the first rotational axis. | 04-17-2014 |
| 623200270 | Occluder includes projecting means defining pivoting axis | 4 |
| 20100087918 | CARDIOVASCULAR VALVE AND ASSEMBLY - A cardiovascular valve and assembly that facilitates valve installation and exchange. A mechanical cardiovascular valve having multiple sections and/or folding components provides easier valve installation. The cardiovascular valve assembly includes an exchangeable mechanical or bioprosthetic valve and a docking station to allow convenient replacement of a first valve with a second valve of the same or different type. | 04-08-2010 |
| 20100131056 | MECHANICAL PROSTHETIC HEART VALVE - A mechanical prosthetic heart valve, includes an annular support ( | 05-27-2010 |
| 20110230961 | DYNAMICALLY ADJUSTABLE ANNULOPLASTY RING AND PAPILLARY MUSCLE REPOSITIONING SUTURE - A system for treating a cardiac valve includes an adjustable annuloplasty ring configured to attach to or near a cardiac valve annulus. The system also includes a suture comprising a first end coupled to the annuloplasty ring. A second end of the suture is configured to be anchored to a papillary muscle. Selectively adjusting the annuloplasty ring adjusts a tension of the suture to reposition the papillary muscle. | 09-22-2011 |
| 20090143866 | Knee prosthesis with four degrees of freedom - Knee prosthesis for implanting in a knee joint has a femoral component, a tibial component and a hinge connecting the femoral component and the tibial component. The femoral component rotates around the transverse axis passing through center of the hinge and the center of rotation of the femoral component moves substantially along proximal-distal axis upon flexion of the knee joint. | 06-04-2009 |
| 20090204221 | Knee joint with a ramp - An artificial knee joint is described that includes a femoral component with a specially shaped bearing surface and a tibial component, whose surface interacts with the femoral surfaces. The interaction provides for the required motion and stability characteristics. The interaction between the femoral and tibial surfaces is such that as the knee is flexed to maximum, the femoral component moves posteriorly on the tibial surface, by an amount similar to that in the anatomic knee. The opposite motion, roll forward of the femur from a fully flexed to a more extended position, is accomplished by varying the outward radii of the lateral and medial femoral bearing surfaces, together with a ramp on the postero-lateral and postero-medial regions of the tibial surfaces. | 08-13-2009 |
| 20090306785 | Knee joint prosthesis - A knee joint prosthesis which comprises a tibial component ( | 12-10-2009 |
| 20100016978 | ANTERO-POSTERIOR PLACEMENT OF AXIS OF ROTATION FOR A ROTATING PLATFORM - A knee replacement system includes a femoral component including a lateral condylar articulating portion and a medial condylar articulating portion, a tibial tray including an upper articulating surface, and a tibial insert including (i) a first articulating portion for articulating with the lateral condylar articulating portion with a first condylar dwell point, (ii) a second articulating portion for articulating with the medial condylar articulating portion with a second condylar dwell point, (iii) a lower articulating surface for articulating with the upper articulating surface, and (iv) a coupling member for coupling with the tibial tray and defining an axis of rotation about which the tibial insert rotates with respect to the tibial tray, the axis of rotation intersecting the upper articulating surface at a location posterior to a dwell axis including the condylar dwell points when the dwell axis is projected onto the upper articulating surface. | 01-21-2010 |
| 20100016979 | KNEE PROSTHESES WITH ENHANCED KINEMATICS - A knee replacement system includes a proximal tibial posterior camming portion defined by a first radius of curvature with a first origin in a first medio-lateral plane, a distal tibial posterior camming portion defined by a second radius of curvature with a second origin in a second medio-lateral plane, an anterior femoral camming portion of a posterior cam defined by a third radius of curvature with a third origin in the first medio-lateral plane, and a posterior femoral camming portion of the posterior cam and defined by a fourth radius of curvature with a fourth origin in the second medio-lateral plane, wherein the second origin is closer to the lateral tibial portion than the first origin, or the fourth origin is closer to the medial femoral portion than the third origin. | 01-21-2010 |
| 20100042224 | HIGH PERFORMANCE KNEE PROSTHESES - Knee prostheses featuring components that more faithfully replicate the structure and function of the human knee joint in order to provide, among other benefits: greater flexion of the knee in a more natural way by promoting or at least accommodating internal tibial rotation in a controlled way, replication of the natural screw home mechanism, and controlled articulation of the tibia and femur respective to each other in a more natural way. In a preferred embodiment, such prostheses include an insert component disposed between a femoral component and a tibial component, the insert component preferably featuring among other things a reversely contoured posterolateral bearing surface that helps impart internal rotation to the tibia as the knee flexes. Other surfaces can also be specially shaped to achieve similar results, preferably using iterative automated techniques that allow testing and iterative design taking into account a manageable set of major forces acting on the knee during normal functioning, together with information that is known about natural knee joint kinetics and kinematics. | 02-18-2010 |
| 20100211179 | SYSTEMS AND METHODS RELATING TO A KNEE PROSTHESIS CAPABLE OF CONVERSION FROM A CRUCIATE RETAINING TYPE PROSTHESIS TO A POSTERIOR STABILIZNG TYPE PROSTHESIS - One embodiment of the present invention relates to a system in which a knee prosthesis is capable of conversion from a cruciate retaining type prosthesis to a posterior stabilizing type prosthesis. Another embodiment of the present invention relates to a system in which a knee prosthesis is converted from a cruciate retaining type prosthesis to a posterior stabilizing type prosthesis. Another embodiment of the present invention relates to a method in which a knee prosthesis is capable of conversion from a cruciate retaining type prosthesis to a posterior stabilizing type prosthesis. Another embodiment of the present invention relates to a method in which a knee prosthesis is converted from a cruciate retaining type prosthesis to a posterior stabilizing type prosthesis. Another embodiment of the present invention relates to a method of making a knee prosthesis that is capable of conversion from a cruciate retaining type prosthesis to a posterior stabilizing type prosthesis. Another embodiment of the present invention relates to a method of making a knee prosthesis that is converted from a cruciate retaining type prosthesis to a posterior stabilizing type prosthesis. | 08-19-2010 |
| 20100249940 | POSTERIOR-STABILIZED TOTAL KNEE PROSTHESIS - In an orthopaedic knee joint prosthesis, an intercondylar fossa of a femoral component cooperates with a spine formed in a tibial component to reproduce the screw home mechanism of a natural knee. When the femoral component and tibial component are positioned to correspond with slight flexion of the knee, the components are mutually rotationally locked against internal or external rotation. At higher degrees of flexion, such as greater than about 10-20 degrees of flexion, internal/external rotation of the tibia is permitted. The tibia is in an externally rotated position when locked, thereby reproducing the screw home mechanism and providing high stability. | 09-30-2010 |
| 20100305709 | Knee Prosthesis Assembly With Ligament Link - A prosthetic knee joint assembly includes a femoral component and a bearing that supports articulation of the femoral component. The assembly further includes a tibial tray. Furthermore, the assembly includes a ligament link operably coupled to the tibial tray or the femoral component via a coupling component. The ligament link extending through the other of the tibial tray or the femoral component to couple to the respective one of the femur or tibia. The ligament link extends between first and second ends and includes an outer wall defining an interior longitudinal passage portion. First and second apertures extend through the wall. The first end extends through the first and second apertures and the longitudinal passage portion to define a first adjustable loop, and the second end extends through the first and second apertures and the longitudinal passage portion to define a second adjustable loop. | 12-02-2010 |
| 20110040387 | SYSTEMS AND METHODS FOR MOBILE BEARING PROSTHETIC KNEE - A knee prosthesis including a femoral implant, a tibial implant, a tibial insert and a cam post. The femoral implant is secured to a femur and has a cam feature and condyles. The tibial implant is secured to a tibia. The tibial insert comprises a medial cavity with a rotational axis. The tibial insert has articulating surfaces that match the contours of the condyles of the femoral implant. The tibial insert has a medial boss that aligns with the medial cavity allowing it to rotate about the rotational axis. A cam post is secured to the tibial implant and passes through a channel of the tibial insert providing anterior and posterior stops for the rotation of the tibial insert about the rotational axis. The cam post interacts with the femoral implant cam feature and, with the tibial insert, allows more anatomically correct rollback and femoral external rotation during knee flexion. | 02-17-2011 |
| 20110066246 | Articulating Trials for Prosthetic Implants - A trial system for an implantable joint replacement includes an articular insert having an insert body and an insert post captive to the insert body. The insert post is translatable relative to the insert body while remaining captive to the insert body. An aperture on the insert body forms a path, which may be arcuate, along which the insert post can translate. An axis of rotation about which the insert post translates passes through the insert body, and may be medially offset from the center of the body. A flexible element may connect the insert post to the insert body. In one method of use, the trial system is engaged with a femoral component and a tibial component during a prosthetic total knee joint implantation procedure to determine selection of an implantable articular insert which provides knee joint articulation closely matching the articulation of a natural knee. | 03-17-2011 |
| 20110066247 | Position Adjustable Trial Systems for Prosthetic Implants - A trial system for an implantable joint replacement includes a guide assembly having a baseplate and a guide plate, the guide plate translatable relative to the base plate along a straight path while directly connected to the baseplate. A first adjustment mechanism may selectively control the translational juxtaposition of the guide plate relative to the baseplate. The guide plate may further be rotatable relative to the baseplate around a rotation axis. A second adjustment mechanism may selectively control the rotational juxtaposition of the guide plate relative to the baseplate, and can lock the plates together. The rotation axis may be medially offset from the center of the guide assembly. The guide plate provides in situ positionable cutting guidance for implantation of prosthetic joint components. The system may further include an articulating insert trial mounted on the guide assembly to determine preferred joint alignment and/or optimal positioning of the guide plate. | 03-17-2011 |
| 20110118847 | POSTERIOR STABILIZED KNEE PROSTHESIS - A knee joint prosthesis includes a femoral component having an anterior side, a posterior side, a pair of laterally spaced condylar portions, and an intercondylar portion joining the condylar portions and including a recess. A cam surface is located adjacent the intercondylar recess on the anterior side of the femoral component and has a saddle shape that is defined by an at least substantially concave first radius of curvature and a convex third radius of curvature that is perpendicular to the concave first radius of curvature. The prosthesis also includes a tibial component including a platform having an upper surface that includes first and second laterally spaced concavities. Each concavity is adapted for receiving one condylar portion of the femoral component. The tibial component has a tibial post for reception in the intercondylar recess of the femoral component. The tibial post has a saddle shaped anterior earn surface that is complementary to the saddle shaped anterior cam surface of the femoral component and is defined by an at least substantially convex second radius of curvature and a concave fourth radius of curvature that is perpendicular to the convex second radius of curvature. | 05-19-2011 |
| 20110125279 | CONSTRAINED CONDYLAR KNEE DEVICE - A knee joint prosthesis includes a femoral component having a first condylar bearing surface and a second condylar bearing surface. Each of the first and second condylar bearing surfaces has a cross-section in a coronal plane that exhibits at least two different radii. The prosthesis also includes a tibial component and an insert component associated with the tibial component. The insert component has bearing surfaces that are complementary to the first and second condylar bearing surfaces, wherein a contact point is established between the bearing surfaces of the insert component and the first and second condylar bearing surface. In accordance with the present invention and as a result of the above construction, varus and valgus rotation of the femoral component relative to the insert component causes the contact point to move laterally as the knee is rotated. By shifting the contact pointy laterally/outwardly, the knee stability (i.e., stiffness) gradually increased. | 05-26-2011 |
| 20110190897 | SYSTEM AND METHOD FOR JOINT ARTHROPLASTY - An orthopaedic joint prosthesis may include a first component, a bearing component, and a third component. The first component has a base and a keel protruding from the base to extend into a first bone. The keel's longitudinal axis is offset from a geometric center of the base. The base has a first articular surface and the bearing component has a second articular surface shaped to articulate with the first articular surface. A feature unitary with the first component reversibly attaches to the bearing component. The bearing component has a third articular surface shaped to articulate with a fourth articular surface on the third component. A distraction feature of the bearing component is shaped to provide alignment and/or distraction between the first articular surface and the fourth articular surface during insertion of the bearing component into a joint space between the first and second bones. | 08-04-2011 |
| 20110313534 | SYSTEMS AND METHODS FOR PROSTHETIC KNEE - A knee prosthesis including femoral and tibial implants, a tibial insert and a cam post assembly. The femoral implant is secured to a femur and has a cam feature and condyles. The tibial implant is secured to a tibia. The tibial insert has articulating surfaces that match the contours of the condyles of the femoral implant, and may have a medial boss that aligns with the tibial implant to provide rotation about a medially displaced rotation axis. A cam post is secured to the tibial implant and passes through a channel of the tibial insert. A motion limiting structure provides limits to motion between the tibial insert and the tibial baseplate. The cam post assembly interacts with the femoral implant cam feature and allows more anatomically correct rollback and femoral external rotation during knee flexion, and varus/valgus support to the femur. | 12-22-2011 |
| 20120029648 | KNEE PROSTHESIS WITH ROTATABLE POST - A knee joint prosthesis for implantation to replace a portion of a knee joint. The knee joint prosthesis includes a tibial tray and a bearing member that engages the tibial tray. The prosthesis also includes an insert with a base that is fixed to the bearing member and an extension portion that extends away from the bearing member and the tibial tray. The extension portion has an axis, and the extension portion includes a threaded portion. The prosthesis further includes a post that is rotatably coupled to the extension portion, and the post is rotatable about the axis of the extension portion relative to the insert. Furthermore, the prosthesis includes a retention member that threadably couples to the threaded portion of the insert to limit movement of the post along the axis away from the bearing member and the tibial tray. | 02-02-2012 |
| 20120095563 | ANTERIOR CRUCIATE LIGAMENT SUBSTITUTING KNEE IMPLANTS - The present disclosure provides knee prostheses that replicate at least a portion of the function of an individual patient's anterior cruciate ligament (ACL). An exemplary knee prosthesis includes a femoral component configured to be implanted on the distal end of the patient's femur and a tibial component configured to be implanted on the proximal end of the patient's tibia. In extension, the femoral component and the tibial component may cooperate to limit anterior movement of the tibial component relative to the femoral component. In flexion, the femoral component may be free to rotate relative to the tibial component. | 04-19-2012 |
| 20120095564 | KNEE PROSTHESIS - A knee prosthesis having a femoral component with two condyles, an opening disposed between the two condyles, and a tibial component having bearing surfaces to engage and support each of the femoral component condyles. Moving the femoral and tibial components in flexion from about 0° to about 165° causes medial pivot rotation of the femoral component upon the tibial component. Rotation may be caused by interaction between an asymmetrical cam extending between the femoral condyles and a post disposed between the bearing surfaces and extending superior from the tibial component. Rotation may alternatively be caused by asymmetrical medial and lateral condyles which translate posteriorly upon respective medial and lateral bearing surfaces at disparate rates, without a femoral cam, a tibial post, or a post/cam contact surface. Embodiments of the knee prosthesis may be used in cruciate-substituting or cruciate-retaining procedures. Embodiments of the knee prosthesis may also prevent roll forward. | 04-19-2012 |
| 20120143342 | KNEE PROSTHESIS - A knee prosthesis includes a femoral component having two condyles and an asymmetrical cam extending between the condyles. The cam has a medial end and a lateral end. The knee prosthesis also includes a tibial component having bearing surfaces and a post disposed between the bearing surfaces. The femoral component and tibial component are engageable by contact between the femoral condyles and tibial bearing surfaces, and by contact between the cam and post. The cam includes a first curvature defined by a first plane passing through the cam, and a second curvature defined by a second plane passing through the cam, the first curvature having a first vertex, and the second curvature having a second vertex, the distance between the first vertex and a medial plane being greater than the distance between the second vertex and the medial plane. | 06-07-2012 |
| 20120197409 | CONSTRAINED KNEE PROSTHESIS - A tibial insert includes a base and a post extending from the base along a longitudinal axis. The post has a medial surface, a lateral surface, and a height along the longitudinal axis. The medial surface has a medial section, and the lateral surface has a lateral section oriented substantially parallel to the medial section. The medial section and the lateral section each have a width in a substantially anterior-posterior direction that is sufficient to enable varus/valgus constraint over a flexion/extension range from extension to about 90 to 120 degrees of flexion when the tibial insert is mated with a femoral component. | 08-02-2012 |
| 20120259417 | POSTERIOR STABILIZED ORTHOPAEDIC PROSTHESIS - A posterior stabilized knee orthopaedic prosthesis includes a tibial bearing and a femoral component configured to articulate with the tibial bearing. The tibial bearing includes a spine having a concave cam surface and a convex cam surface. The femoral component includes a posterior cam having a concave cam surface and a convex cam surface. During flexion, the concave cam surface of the posterior cam contacts the convex cam surface of the spine and the convex cam surface of the posterior cam contacts the concave cam surface of the spine. | 10-11-2012 |
| 20120296437 | Posterior Stabilized Orthopaedic Knee Prothesis Having Controlled Condylar Curvature - An orthopaedic knee prosthesis includes a tibial bearing and a femoral component configured to articulate with the tibial bearing. The femoral component includes a posterior cam configured to contact a spine of the tibial bearing and a condyle surface curved in the sagittal plane. The radius of curvature of the condyle surface decreases gradually between early-flexion and mid-flexion. Additionally, in some embodiments, the radius of curvature of the condyle surface may be increased during mid-flexion. | 11-22-2012 |
| 20130006372 | POSTERIOR STABILIZED ORTHOPAEDIC PROSTHESIS ASSEMBLY - A posterior stabilized knee orthopaedic prosthesis assembly includes a tibial bearing, a primary femoral component, and a revision femoral component. Each of the primary and revision femoral components is configured to separately articulate with the tibial bearing. However, each of the primary and revision femoral components has different geometry. The primary femoral component includes a posterior cam having a posterior cam surfacing including a concave cam surface and a convex cam surface. The revision femoral component includes a posterior cam having only a convex cam surface. | 01-03-2013 |
| 20130006373 | POSTERIOR STABILIZED ORTHOPAEDIC KNEE PROSTHESIS HAVING CONTROLLED CONDYLAR CURVATURE - An orthopaedic knee prosthesis includes a tibial bearing and a femoral component configured to articulate with the tibial bearing. The femoral component includes a posterior cam configured to contact a spine of the tibial bearing and a condyle surface curved in the sagittal plane. The radius of curvature of the condyle surface decreases gradually between early-flexion and mid-flexion. Additionally, in some embodiments, the posterior cam of the femoral component may include a concave cam surface and a convex cam surface. | 01-03-2013 |
| 20130123931 | Knee Revision Prosthesis With Progressive Restraint - A knee revision prosthesis that provides decreasing valgus-varus and medial-lateral restraint as the knee rotates from extension to flexion, and then increasing restraint as the knee rotates from flexion to full extension. The prosthesis includes a femoral component and a tibial component. The femoral component includes a guide box fixed to the femoral mounting surfaces intermediate the condyles. The tibial component includes a central post fixed intermediate the tibial concavities, which articulates within the guide box and constrains rotational movement of the femoral and tibial components relative to one another in the coronal plane and transverse planes. The post and guide box are constructed and arranged to provide progressively decreasing and then progressively increasing rotational constraint of the femoral component in the coronal and transverse planes as the femoral component rotates in the sagittal plane between full extension to a position in flexion, and then back to full flexion, respectively. | 05-16-2013 |
| 20130197653 | PROSTHETIC JOINT - A joint prosthesis comprising, e.g., a femoral component and a tibial component. The medial and lateral condylar articular surfaces may have substantially uniform and equal radii from full extension to about 90° of flexion. From 90°, the lateral condylar articular surface has a smaller radius than the medial condylar articular surface such that the medial condyle gradually becomes increasingly more proud than the lateral condyle to facilitate internal rotation of the tibia at deep flexion. Also, the tibial articular component may include a post intermediate the medial and lateral compartments that engages a cam on the femoral articular component between the medial and the lateral condylar articular surfaces. The cam and post become congruent at flexion angles of approximately 70° flexion and mate symmetrically during the first 20°-30° of further flexion, and then mate asymmetrically at greater degrees of flexion to force internal rotation of the tibia. | 08-01-2013 |
| 20130204378 | EXTRA-ARTICULAR IMPLANTABLE MECHANICAL ENERGY ABSORBING ASSEMBLIES HAVING TWO DEFLECTING MEMBERS AND METHODS - Implantable assemblies for manipulating energy transferred by members defining an anatomical joint, and methods of implanting and using. The members of the anatomical joint collectively define a path of motion. An assembly includes a first component configured to be attached to a first member of the anatomical joint; a second component configured to be attached to a second member of the anatomical joint; and a joint joining the first and second components. The first component includes a first flex member and the second component includes a second flex member. The first and second flex members are configured to flex to absorb energy transferred by the members of the anatomical joint. | 08-08-2013 |
| 20130204379 | SYSTEMS AND METHODS FOR PROVIDING A FEMORAL COMPONENT WITH A MODIFIED POSTERIOR CONDYLE - Systems and methods for providing deeper knee flexion capabilities. In some instances, such systems and methods include a knee prosthesis that includes a femoral component for replacing at least a portion of a distal end of a femur. In some cases, the femoral component has a posterior condyle that is configured to articulate against a tibial articular surface. In such cases, an articular surface at a proximal portion of the posterior condyle is sized and shaped to extend at least half of an antero-posterior distance between a most posterior portion of the posterior condyle and a plane that is a continuation of a distal one fourth to one third of a posterior cortex of a femoral shaft of the femur. Other implementations are also discussed. | 08-08-2013 |
| 20130204380 | KNEE JOINT PROSTHESIS - A knee joint endoprosthesis is provided which consists of a femur component and a tibia component having cooperating joint surfaces in contact with one another. A rotation guide arrangement is provided for forcing the femur component and the tibia component to rotate relative to each other about a medial center of rotation as a result of a flexure of the knee joint endoprosthesis. The rotation guide arrangement having a first guide element with a first guidance surface and a second guide element with a second guidance surface which cooperates with the first guidance surface. A projection of the tibia component comprises the first guide element and a transverse extension connecting condyles of the femur component comprises the second guide element. The first guidance surface defines a first radius of curvature and the second guidance surface defines a second radius of curvature. The first and second radii of curvature are identical. | 08-08-2013 |
| 20130310944 | KNEE JOINT PROSTHESIS - A knee joint prosthesis which comprises a tibial component ( | 11-21-2013 |
| 20130345819 | Prosthetic Device With No Damper - A prosthetic joint assembly supports articulation of a joint. The joint assembly includes a first component configured to be fixed to an anatomical feature. The first component includes a first impact surface and a second component that engages the first component. The second component includes a second impact surface that impacts the first impact surface as the first component moves relative to the second component. Furthermore, at least one of the first impact surface and the second impact surface includes a dampening member that dampens energy resulting from impact of the first and second impact surfaces. | 12-26-2013 |
| 20140018929 | KNEE PROSTHESIS WITH GUIDED EXTENSION AND FLEXION - An orthopaedic knee joint prosthesis ( | 01-16-2014 |
| 20140046452 | TOTAL KNEE REPLACEMENT SUBSTITUTING FUNCTION OF ANTERIOR CRUCIATE LIGAMENT - A total knee replacement prosthesis comprising condylar and intercondylar bearing surfaces configured to manage anterior/posterior displacement between the articulating femoral and tibial components. | 02-13-2014 |
| 20140052267 | EXTRA-ARTICULAR IMPLANTABLE MECHANICAL ENERGY ABSORBING ASSEMBLIES HAVING TWO DEFLECTING MEMBERS AND METHODS - Implantable assemblies for manipulating energy transferred by members defining an anatomical joint, and methods of implanting and using. The members of the anatomical joint collectively define a path of motion. An assembly includes a first component configured to be attached to a first member of the anatomical joint; a second component configured to be attached to a second member of the anatomical joint; and a joint joining the first and second components. The first component includes a first flex member and the second component includes a second flex member. The first and second flex members are configured to flex to absorb energy transferred by the members of the anatomical joint. | 02-20-2014 |
| 20140156014 | IMPROVED KNEE PROSTHESIS - Tibial inserts and tibial femoral systems are provided for improved knee reconstruction systems. External rotation of a knee joint implant is enhanced by modifications to the post, providing a recess that allows clearance of the post against the corners of a box wall within the femoral component. The rotation provides for a more natural knee joint motion of the implant. The depth, size, and location of the post relief may be modified for certain applications to provide both improved rotational motion and constraint against undesirable motion of the knee. | 06-05-2014 |
| 20140243988 | KNEE PROSTHESIS - Tibial inserts and tibial femoral systems are provided for improved knee reconstruction systems. External rotation of a knee joint implant is enhanced by modifications to the post, providing a recess that allows clearance of the post against the corners of a box wall within the femoral component. The rotation provides for a more natural knee joint motion of the implant. The depth, size, and location of the post relief may be modified for certain applications to provide both improved rotational motion and constraint against undesirable motion of the knee. | 08-28-2014 |
| 20140243989 | ARTIFICIAL KNEE JOINT IMPLANT - The present invention provides a PS-type artificial knee joint implant, with which the gap balance can be adjusted in order to realize a stable deep flexion movement, the burden on a surgeon and a patient can be reduced, and the patient can perform a natural flexion movement. An artificial knee joint implant | 08-28-2014 |
| 20140249640 | MULTIPLE-CAM, POSTERIOR-STABILIZED KNEE PROSTHESIS - A distal femoral knee-replacement component provides additional points of cam action by either distinct bars or interconnected structural elements such as cam extensions to prevent early translation of the knee or dislocation of the femoral component over the tibial post which can occur in cruciate-substituting designs. | 09-04-2014 |
| 20140257502 | ANTERIOR STABILIZED PCL RETAINING TOTAL KNEE PROSTHESIS - A knee prosthesis that includes a tibial component and femoral component. The tibial component includes an articular surface, a posterior portion and an anterior portion. The posterior portion includes a recess for receipt of a posterior cruciate ligament. The anterior portion includes a post extending therefrom. The post includes a posterior surface. The femoral component includes a condylar portion and an intercondylar portion. The intercondylar portion includes a posterior recess for receipt of the posterior cruciate ligament, a cam, and an engagement recess for receipt of the post. The cam includes a sliding surface and is disposed between the engagement recess and posterior recess. The sliding surface of the cam slides along the posterior surface of the post for restricting anterior subluxation of a femur bone when the articular surface and the condylar portion articulates through flexion of a knee joint. | 09-11-2014 |
| 20140277534 | KNEE PROSTHESIS INCLUDING ROTATABLE SPINE - A knee joint prosthesis is disclosed. The knee joint prosthesis can include a tibial baseplate, a tibial insert, and a spine. The tibial baseplate can include a tibial plateau, having a proximal surface and an opposing distal surface, and a tibial stem extending from the distal surface of the tibial plateau. The tibial insert can be located on the proximal surface of the tibial plateau and can include an aperture. The spine can extend through the aperture of the tibial insert and into a cavity of the tibial stem, from the proximal surface of the tibial plateau. The spine can be rotatable with respect to the tibial baseplate and the tibial insert. The knee joint prosthesis can further include a femoral component including a posteriorly-located femoral cam. The posteriorly-located femoral cam can engage the spine during movement of the knee joint prosthesis. | 09-18-2014 |
| 20140303739 | ORTHOPAEDIC BEARING AND METHOD OF ASSESSING AN ORTHOPAEDIC IMPLANT - There is provided an orthopaedic bearing comprising at least one capacitive sensing element arranged within the bearing material, and operable to measure a change in capacitance resultant from any compression or tension of the bearing during use. There is also provided a method of assessing an orthopaedic implant including an instrumented orthopaedic bearing. | 10-09-2014 |
| 20140324176 | CONSTRAINED KNEE PROSTHESIS - A tibial insert includes a base and a post extending from the base along a longitudinal axis. The post has a medial surface, a lateral surface, and a height along the longitudinal axis. The medial surface has a medial section, and the lateral surface has a lateral section oriented substantially parallel to the medial section. The medial section and the lateral section each have a width in a substantially anterior-posterior direction that is sufficient to enable varus/valgus constraint over a flexion/extension range from extension to about 90 to 120 degrees of flexion when the tibial insert is mated with a femoral component. | 10-30-2014 |
| 20150018960 | ARTIFICIAL KNEE JOINT - An artificial knee joint ( | 01-15-2015 |
| 20150057757 | Knee Prosthesis Assembly With Ligament Link - A method of implanting a prosthetic knee joint assembly. The method includes: coupling a femoral component to a femur, and coupling a tibial component to a tibia; coupling a ligament link to one of the femur or the tibia; coupling the ligament link to a coupling component of one of the femoral component or the tibial component; arranging the ligament link in a first position relative to the tibial component when the prosthetic knee joint assembly is implanted in a left knee; and arranging the ligament link in a second position relative to the tibial component when the prosthetic knee joint assembly is implanted in a right knee, the second position is different from the first position. | 02-26-2015 |
| 20150127111 | ANTERIOR STABILIZED KNEE IMPLANT - A posterior cruciate ligament retaining knee implant prosthesis comprising a femoral component including a medial condyle and a lateral condyle separated from one another by an intercondylar channel adapted to accommodate throughput of a native cruciate ligament, both the medial condyle and the lateral condyle posteriorly terminate individually, the medial condyle including a medial condyle bearing surface and the lateral condyle including a lateral condyle bearing surface, the femoral component including an anterior cam, and a tibial component including a medial condyle receiver having a medial condyle receiver bearing surface, the tibial component also including a lateral condyle receiver having a lateral condyle receiver bearing surface, the tibial component also including an anterior post. | 05-07-2015 |
| 20150134068 | SPACER IMPLANT FOR THE TEMPORARY REPLACEMENT OF A KNEE PROSTHESIS - The present invention relates to a spacer implant (I) for the temporary replacement of a knee prosthesis, said implant (I) having a femoral condyle ( | 05-14-2015 |
| 20160051366 | KNEE PROSTHESIS INCLUDING ROTATABLE SPINE - A knee joint prosthesis is disclosed. The knee joint prosthesis can include a tibial baseplate, a tibial insert, and a spine. The tibial baseplate can include a tibial plateau, having a proximal surface and an opposing distal surface, and a tibial stem extending from the distal surface of the tibial plateau. The tibial insert can be located on the proximal surface of the tibial plateau and can include an aperture. The spine can extend through the aperture of the tibial insert and into a cavity of the tibial stem, from the proximal surface of the tibial plateau. The spine can be rotatable with respect to the tibial baseplate and the tibial insert. The knee joint prosthesis can further include a femoral component including a posteriorly-located femoral cam. The posteriorly-located femoral cam can engage the spine during movement of the knee joint prosthesis. | 02-25-2016 |
| 20190142595 | TOTAL KNEE IMPLANT PROSTHESIS ASSEMBLY AND METHOD | 05-16-2019 |
| 623200280 | Slot in annular support member | 1 |
| 20120101573 | Mechanical Heart Valve Apparatus - A mechanical heart valve apparatus includes a loop-shaped frame defining a valve opening and formed with a pair of transverse slot units and a pair of longitudinal slots; and a pair of valve plates mounted on the loop-shaped frame. Each of the valve plates includes a pair of first studs that are slidably and respectively inserted into the transverse slot units, and a second stud that is slidably inserted into a respective one of the longitudinal slots. The valve plates are pivoted to each other so as to be rotatable relative to each other between a closed position, in which the second studs are disposed adjacent to upper ends of the longitudinal slots, and an opening position, in which the second studs are disposed adjacent to lower ends of the longitudinal slots. | 04-26-2012 |
| 20100131070 | ANATOMICAL MOTION HINGED PROSTHESIS - A hinged knee prosthesis ( | 05-27-2010 |
| 20100174378 | Knee Joint Prosthesis System and Method for Implantation - A prosthesis system for replacing a knee joint between a femur and a tibia can include a femoral component, a tibial component, a bearing, a first yoke, and a first key. The femoral component can include a first condylar portion, a second condylar portion, a first sidewall extending superiorly from the first condylar portion, a second sidewall extending superiorly from the second condylar portion where the first and second sidewalls collectively comprise a first hinge portion. The tibial component can have a bone engaging inferior surface and a bearing engaging superior surface. The bearing can have an inferior that engages the bearing engaging surface and a superior femoral engaging surface. The bearing can define an opening. The first yoke can have an inferior portion, a superior portion and a yoke keyway extending through the therethrough. | 07-08-2010 |
| 20100191342 | TOTAL KNEE IMPLANT - A knee prosthesis is provided for use in knee arthroplasty. In one exemplary embodiment, the present invention provides a tibial prosthesis having a tibial baseplate with a fixed medial bearing component and a mobile lateral bearing component. In one exemplary embodiment, the lateral bearing component is secured to the lateral portion of the tibial baseplate utilizing at least one prosthetic ligament. Additionally, in one exemplary embodiment, a stop is provided to limit anterior or posterior movement of the lateral bearing component relative to the tibial baseplate. For example, the stop may be defined by cooperating shoulders formed on the lateral bearing and the tibial baseplate. | 07-29-2010 |
| 20100249941 | SURGICALLY IMPLANTABLE KNEE PROSTHESIS WITH CAPTURED KEEL - A unicompartmental knee prosthesis for implantation in a knee joint between a femoral condyle and a corresponding tibia plateau is provided including a generally elliptical body having opposed femoral and tibial face, the body having an anterior end and a posterior end. A keel is provided on the tibial face having a generally anterior-posterior orientation, the keel having an anterior end and a posterior end, where the keel posterior end includes a distal posterior portion that extends farther toward the body posterior end compared with a proximal posterior portion of the keel posterior end. | 09-30-2010 |
| 20100262253 | Modular Knee Prosthesis - A joint prosthesis may include a tibial tray, a tibial base, a tibial articular member, and a femoral articular member. A coupler may engage the tray, and optionally the base, with an interference fit. An interference fit may be engaged using a mating surface with a constant non-tapering cross-sectional geometry. | 10-14-2010 |
| 20110029090 | PROSTHESIS WITH MODULAR EXTENSIONS - A joint prosthesis system has two implant components and a bearing. One of the implant components has an articulation surface for articulation with the bearing. The other implant component has a mounting surface for supporting the bearing. At least one of the first and second components includes a recess and a stud in the recess. The joint prosthesis also includes an extension mounted on the stud and extending out from the bone-engaging surface to an end. Part of the extension is received in the recess. | 02-03-2011 |
| 20110035018 | PROSTHESIS WITH COMPOSITE COMPONENT - A joint prosthesis with three components is disclosed. The prosthesis includes a first component, a composite component and a bearing component. The bearing can be mounted on and fixed to the composite component and has an articulation surface to articulate with an articulation surface of the first component. The composite component has an extension for stabilizing the component when implanted. The extension has an end opposite the bearing. The composite component includes a porous base or preform molded to a solid polymer portion. The solid polymer portion engages the bearing component and extends into the extension and defines the end of the extension. The bearing is made of a different polymer. The composite component may be made by injection molding. | 02-10-2011 |
| 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 |
| 20110125280 | High Performance Knee Prostheses - Knee prostheses featuring components that more faithfully replicate the structure and function of the human knee joint in order to provide, among other benefits: greater flexion of the knee in a more natural way by promoting or at least accommodating internal tibial rotation in a controlled way, replication of the natural screw home mechanism, and controlled articulation of the tibia and femur respective to each other in a more natural way. In a preferred embodiment, such prostheses include an insert component disposed between a femoral component and a tibial component, the insert component preferably featuring among other things a reversely contoured posterolateral bearing surface that helps impart internal rotation to the tibia as the knee flexes. Other surfaces can also be specially shaped to achieve similar results, preferably using iterative automated techniques that allow testing and iterative design taking into account a manageable set of major forces acting on the knee during normal functioning, together with information that is known about natural knee joint kinetics and kinematics. | 05-26-2011 |
| 20110202139 | PROSTHETIC DEVICE WITH DAMPER - A prosthetic joint assembly supports articulation of a joint. The joint assembly includes a first component configured to be fixed to an anatomical feature. The first component includes a first impact surface and a second component that engages the first component. The second component includes a second impact surface that impacts the first impact surface as the first component moves relative to the second component. Furthermore, at least one of the first impact surface and the second impact surface includes a dampening member that dampens energy resulting from impact of the first and second impact surfaces. | 08-18-2011 |
| 20110245928 | Femoral and Tibial Bases - Various embodiments are directed to femoral and tibial bases that form structures of an implantable mechanical energy absorbing system. According to one embodiment, the bases include a low-profile body having a elongate and a curved body portion. One end of the base is elevated as compared to another end. An inner surface of the low-profile body has a raised portion extending along the elongate, straight portion of the low-profile body. The bases also include a plurality of openings positioned along the low-profile body for alignment and purposes of affixation to body anatomy. | 10-06-2011 |
| 20110270403 | Implantable Mobile Bearing Prosthetics - A knee prosthesis including a femoral implant, a tibial implant, a tibial insert and a cam post. The femoral implant is secured to a femur and has a gap for receiving a natural PCL. The tibial implant is secured to a tibia. The tibial insert comprises a medial cavity with a rotational axis. The tibial insert has articulating surfaces that match the contours of the condyles of the femoral implant and a notch for retaining the natural PCL. The tibial insert has a medial boss that aligns with the medial cavity allowing it to rotate about the rotational axis. A post is secured to the tibial implant and enters a hole of the tibial insert providing anterior and posterior stops for the rotation of the tibial insert about the rotational axis. | 11-03-2011 |
| 20120022658 | ASYMMETRIC TIBIAL COMPONENTS FOR A KNEE PROSTHESIS - An orthopaedic tibial prosthesis includes a tibial baseplate with an asymmetric periphery which promotes proper positioning and orientation on a resected tibia, while also facilitating enhanced kinematics, soft-tissue interaction, and long-term fixation of the complete knee prosthesis. The asymmetric baseplate periphery is sized and shaped to substantially match portions of the periphery of a typical resected proximal tibial surface, such that proper location and orientation is evident by resting the baseplate on the tibia. The baseplate periphery provides strategically positioned relief and/or clearance between the baseplate periphery and bone periphery, such as in the posterior-medial portion to prevent deep-flexion component impingement, and in the anterior-lateral portion to avoid undue interaction between the anatomic iliotibial band and prosthesis components. | 01-26-2012 |
| 20120029649 | STABILIZED KNEE PROSTHESIS - A knee prosthesis includes a femoral component, a tibial component, and a coupling component interconnecting the femoral component and the tibial component. The tibial component includes ball. The femoral component is configured to move relative to the tibial component. The coupling component defines an internal cavity including a first spherical end portion and a second spherical end portion. The internal cavity is dimensioned to receive the ball of the tibial component. The ball is repositioned between the first spherical end portion and the second spherical end portion of the internal cavity upon movement of the femoral component relative to the tibial component. | 02-02-2012 |
| 20120109325 | TIBIAL COMPONENT OF A KNEE PROSTHESIS HAVING AN ANGLED CEMENT POCKET - An implantable orthopaedic knee prosthesis includes a component that is configured to be coupled to a surgically-prepared bone. A fixation side of the component includes a fixation surface that has an angled cement pocket formed therein. | 05-03-2012 |
| 20120136452 | KNEE JOINT PROSTHESIS AND RELATED METHOD - The present invention relates to a knee joint prosthesis having a tibial component and a femoral component. The tibial component includes a fixation portion fixed to an upper end of a prepared tibia and a ceramic bearing portion presenting articulation surface(s). The femoral component is fixed to a lower end of a prepared femur and comprises a ceramic body portion presenting articulation surface(s). The respective articulation surfaces of the tibial and femoral components are configured for essentially congruent engagement over a full range of movement of the prosthesis, and the bearing portion of the tibial component is adapted for movement relative to the fixation portion. Also disclosed is an apparatus and a method for finishing articulation surfaces of ceramic components of a knee joint prosthesis, including the steps of combining the ceramic bearing portion and the ceramic body portion, and imparting relative movement to the bearing portion and/or the body portion. | 05-31-2012 |
| 20120185054 | MEDIAL PIVOT POSTERIOR STABILIZED KNEE IMPLANT SYSTEM - A knee prosthesis includes a femoral component for mounting to the distal end of the patient's femur and a tibial insert component. The femoral component includes a posterior cam extending between the lateral condylar structure and the medial condylar structure. The tibial insert includes a lateral bearing surface, a medial bearing surface, and a raised post portion having a posterior surface adapted to cooperate with the posterior cam of the femoral component. The posterior surface includes a posteriorlateral camming surface and a posteriormedial camming surface and each of the two camming surfaces have different radii of curvature. Between 60° to 90° of knee flexion, the posterior cam of the femoral component engages the raised post portion of the tibial insert and cooperates with the posteriorlateral and the posterior medial camming surfaces to promote posterior translation of the lateral condylar surface on the lateral bearing surface. | 07-19-2012 |
| 20120239159 | KNEE PROSTHESIS - A knee joint prosthesis assembly can include a femoral component that has a medial and a lateral condyle portion connected by a patellar track portion. The femoral component can form an opening between the medial and lateral condyles. A tibial component can have a medial portion that includes a first engagement structure and a lateral portion that includes a second engagement structure. A medial bearing can have a third engagement structure formed thereon that selectively engages the first engagement structure. A lateral bearing separately formed and independent from the medial bearing can have a fourth engagement structure formed thereon that selectively engages the second engagement structure. | 09-20-2012 |
| 20120271427 | Ceramic manufactures - Prosthetic knee implant or implant component is made with a magnesium oxide stabilized transformationally toughened zirconia. | 10-25-2012 |
| 20130006374 | KNEE PROSTHESIS HAVING A MIXED MENISCAL PLATE - The invention relates to a knee prosthesis ( | 01-03-2013 |
| 20130018477 | Methods and Devices for Knee Joint Replacement with Anterior Cruciate Ligament Substitution - Methods and devices are provided for knee joint replacement with anterior cruciate ligament (ACL) substitution. Generally, the methods and devices can allow a knee joint to be partially or totally replaced in conjunction with substitution of the knee joint's ACL. In one embodiment, a knee replacement prosthesis can include a medial or lateral femoral implant, a femoral intercondylar notch structure, a medial or lateral tibial insert, and an ACL-substitution member. The ACL-substitution member can be configured to engage with the femoral intercondylar notch structure during a full range of knee motion and/or during only early knee flexion. | 01-17-2013 |
| 20130053972 | MULTI-COMPONENT KNEE IMPLANT ASSEMBLY WITH MULTIPLE ARTICULATING AND TRAVELING SURFACES - A multi-component joint assembly incorporated into reconditioned end surfaces established between an upper bone and an opposing lower bone. A first component is anchored into the upper reconditioned bone end surface and exhibits a first exposed support surface, a second component is anchored into the lower reconditioned bone end surface and exhibits a second exposed support surface. A spherical shaped and multi-directional supporting component is supported between the first and second anchored components. | 02-28-2013 |
| 20130053973 | MULTI-COMPONENT KNEE IMPLANT ASSEMBLY WITH COMBINED ARTICULATING AND BELT SUPPORT AND TRAVELING SURFACES - A joint assembly incorporated into reconditioned end surfaces established between an upper bone and an opposing lower bone. The assembly includes a first component anchored into a first of the reconditioned bone end surfaces and exhibiting a first exposed support surface and a second component anchored into a second of the reconditioned bone end surfaces and exhibiting a second exposed support surface further including a flexible and conveyable closed loop belt relatively displaceable upon contact with the first support surface. Entrapment pockets can be formed within the implantable components and for collecting wear particles and debris from the belt and in order to extend the life of the joint assembly. | 02-28-2013 |
| 20130060344 | FEMORAL COMPONENT WITH REINFORCED ARTICULATING SURFACE - A femoral component for a knee joint prosthesis. The femoral component can comprise a polymer body having first and second condylar portions interconnected by an intercondylar anterior portion. A first reinforcement member can be secured to the first condylar portion. A second reinforcement member can be secured to the second condylar portion. The reinforcement members can comprise a material selected from the group consisting of a metal alloy, a ceramic material, and a thermoplastic material. | 03-07-2013 |
| 20130103159 | KNEE REPLACEMENT SYSTEM AND METHOD FOR ENABLING NATURAL KNEE MOVEMENT - A method of implanting a knee replacement system in a leg with a femur and a tibia of a patient can include, implanting a femoral component onto a condyle of the femur and placing a trial tibial component on a tibial plateau of the tibia. The tension of a posterior cruciate ligament can be adjusted. The tension of an anterior cruciate ligament can be adjusted. The posterior position of the trial tibial component can be adjusted. The knee condition at toe off onset can be simulated during walking. | 04-25-2013 |
| 20130184829 | FIXED-BEARING KNEE PROSTHESIS HAVING INTERCHANGEABLE COMPONENTS - A fixed-bearing prosthesis includes a femoral component having a medial condyle surface and a lateral condyle surface. The knee prosthesis also includes a bearing having a medial bearing surface configured to articulate with the medial condyle surface of the femoral component, and a lateral bearing surface configured to articulate with the lateral condyle surface of the femoral component. A tibial tray is secured to the bearing. The tibial tray has a platform with an elongated stem extending downwardly from a lower surface thereof. A posterior buttress extends along a posterior section of the perimeter of the tray's platform, and an anterior buttress extends along an anterior section of the perimeter of the tray's platform. Differently-sized tibial trays are interchangeable with differently-sized bearings. | 07-18-2013 |
| 20130261756 | KNEE IMPLANTS HAVING HYDROMAGNETIC JOINTS - A knee implant includes a first implant part adapted for attachment to a femur and a second implant part adapted for attachment to a tibia. The knee implant includes a hydromagnetic joint having a first magnetic element with a first magnetically charged surface and a first buoyant element coupled with the first magnetic element, and a second magnetically charged surface that opposes the first magnetically charged surface of the first magnetic element and a second buoyant element coupled with the second magnetic element. A fluid body is disposed between the first and second buoyant elements, and the first and second buoyant elements are in fluid communication with one another through the fluid body. The hydromagnetic joint has an enclosure extending between the first and second buoyant elements for containing the fluid body therebetween, whereby the first and second buoyant elements are moveable relative to one another. | 10-03-2013 |
| 20140107794 | PROSTHESIS FOR CEMENTLESS FIXATION - A joint prosthesis system is suitable for cemented fixation. The system has two metal implant components and a bearing. One of the metal implant components has an articulation surface for articulation with the bearing. The other metal implant component has a mounting surface for supporting the bearing. One of the metal implant components includes an extension, such as a stem or pegs, with an exposed outer surface. The metal implant component from which the extension extends comprises titanium and the exposed outer surface of the extension comprises a different form of titanium. A method of making the joint prosthesis is also disclosed. | 04-17-2014 |
| 20140236308 | Tibial Component - According to one aspect of the present invention, there is provided a tibial component ( | 08-21-2014 |
| 20140364955 | ORTHOPEDIC SHOCK DAMPER SYSTEM - A shock absorbent system for a joint prosthesis includes a shock absorbent material. The shock absorbent system may be used in both hip and knee joint prostheses. In one example, a knee joint prosthesis includes a tibial plate, a femoral component having a moveable condyle in contact with a shock absorbent material, wherein movement of the moveable condyle deforms the shock absorbent material, and a tray insert disposed between the tibial plate and the moveable condyle. The moveable condyle deforms the shock absorbent material under compressive forces between the tibial plate and the femoral component, thereby absorbing impact loads | 12-11-2014 |
| 20150012105 | Two-part articulating joint spacer and method for producing said joint spacer - The invention relates to an articulating joint spacer for temporary replacement of a joint, whereby the joint spacer comprises two spacer parts which each comprise one sliding surface on which the spacer parts, in the patient-inserted state, touch against each other in mobile manner and roll off on each other, and the remaining spacer parts are made, at least in part, of a second bone cement that contains at least one water-soluble antibiotic. The invention also relates to a method for producing a two-part articulating joint spacer, in which a sliding surface is formed in both spacer parts from a low-abrasion first bone cement and at least the surfaces of the remaining spacer parts, at least 50% thereof, are formed with a second bone cement that contains at least one water-soluble antibiotic. | 01-08-2015 |
| 20150112445 | POST-OPERATIVE PAIN INHIBITOR FOR JOINT REPLACEMENT AND METHOD THEREOF - A post-operative pain inhibitor system comprises a controller and leads. Neuro-stimulator circuitry may be included within the patient controller or within one or more prosthetic components for generating a signal. In one example, a hip implant includes a prosthetic component having at least one electrode where the at least one electrode is configured to deliver energy pulses. Topical leads, percutaneous leads, subcutaneous leads, intraosseous leads, or leads can be placed in proximity to the operative field corresponding to the prosthetic component installation. The lead or electrodes can be coupled to neuro-stimulation circuitry to stimulate peripheral nerve fibers to affect body generated action potentials. A transmitter or power source can be housed in a prosthetic hip component. Controller can modify the pulse width, pulse shape, pulse repetition rate, and pulse amplitude of the signal thereby allowing the patient to adapt the signal to minimize their perceived pain. | 04-23-2015 |
| 20150305874 | CONVERTIBLE PRE-PARTIAL KNEE REPLACEMENT - A unicondylar resurfacing femoral component including a metallic base member and a polymeric articulation member. The metallic base member includes a main body and a retention member extending from the main body configured to be secured within a condyle of a femur. The polymeric articulation member is coupled to the main body of the metallic base member and includes an articulation surface configured to articulate directly against a planar surface of a metallic tibial component | 10-29-2015 |
| 20150335449 | SYSTEMS AND METHODS FOR MOBILE BEARING PROSTHETIC KNEE - A trial system for an implantable joint replacement includes a guide assembly having a baseplate and a guide plate, the guide plate rotatable relative to the base plate about a rotation axis extending through the guide plate and the baseplate while directly connected to the baseplate. An adjustment mechanism is actuable to selectively control the rotational juxtaposition of the guide plate relative to the baseplate. The rotation axis may be medially offset from the center of the guide assembly. A single instrument may be used to rotate the guide plate relative to the base plate and lock the plates in the selected juxtaposition. The guide plate provides in situ positionable cutting guidance for implantation of prosthetic joint components. The system may further include an articulating insert trial mounted on the guide assembly to determine preferred joint alignment and/or optimal positioning of the guide plate. | 11-26-2015 |
| 20160030186 | METHOD OF IMPLANTING A UNICONDYLAR KNEE PROSTHESIS - A method of implanting a lateral unicondylar knee prosthesis in a lateral articulating portion of a femur having a lateral condyle for engagement with a tibia, the method including the steps of: bending a patients knee such that the knee is not in full extension; making an incision through the skin, muscle, and other soft tissue until the damaged bone surfaces are exposed; resecting an end portion of the lateral tibia; resecting an end portion of the lateral femoral condyle; attaching a tibial prosthetic component to the resected end portion of the tibia; attaching a lateral femoral condyle prosthetic component to the resected end portion of the lateral femoral condyle; determining the thickness of a mobile bearing member with the knee in full extension; and inserting the mobile bearing member between the tibial prosthetic component and the femoral prosthetic component. | 02-04-2016 |
| 20160158020 | ARTIFICIAL KNEE JOINT IMPLANT - Provided is an artificial knee joint implant with which the balance between ligaments can be properly adjusted. An artificial knee joint implant includes a plurality of types of tibial plates-having tibia-side sliding faces that slide against femoral components and respectively having at least either the tibia-side sliding faces at different positions with respect to a tibia in a state where the tibial plates are fixed to a tibial tray attached to a tibia, or the tibia-side sliding faces in different shapes. | 06-09-2016 |
| 20190142609 | METHOD FOR PREPARING A PATIENT'S TIBIA TO RECEIVE AN IMPLANT | 05-16-2019 |
