Class / Patent application number | Description | Number of patent applications / Date published |
623200330 | Movable bearing | 28 |
20080243260 | MOBILE BEARING ASSEMBLY HAVING A NON-PLANAR INTERFACE - A unicompartmental mobile tibial assembly includes a tibial tray and a tibial insert. The tibial tray includes an upper surface and a bottom surface configured to contact a portion of a surgically-prepared surface of the proximal end of a tibia. The tibial insert includes an upper bearing surface configured to contact a surgically-prepared surface of the distal end of a femur and a bottom bearing surface configured to contact the upper surface of the tibial tray when the tibial insert is coupled to the tibial tray. Any one or more of the upper surface of the tibial tray, the bottom surface of the tibial tray, and/or the bottom bearing surface of the tibial insert may be non-planar. | 10-02-2008 |
20080243261 | MOBILE BEARING ASSEMBLY HAVING A CLOSED TRACK - A mobile tibial assembly includes a tibial tray and a tibial insert. The tibial tray includes a closed track. The tibial insert includes a stem configured to be inserted into the closed track and retained therein. The tibial insert is movable along the closed track once inserted. | 10-02-2008 |
20080243262 | MOBILE BEARING ASSEMBLY - A mobile tibial assembly includes a tibial tray and a tibial insert configured to move relative to the tibial tray. The tibial insert includes a platform having an upper bearing surface and a stem extending downwardly from a bottom surface of the insert. The tibial tray includes a corresponding recess, such as a cavity and/or a channel, configured to receive the stem therein such that the stem and the recess cooperate to constrain the movement of the tibial insert relative to the tibial tray. | 10-02-2008 |
20080243263 | MOBILE BEARING ASSEMBLY HAVING MULTIPLE ARTICULATION INTERFACES - A mobile tibial assembly includes a tibial tray, a tibial insert, and a platform separate from the tibial tray and the tibial insert. The platform is configured to be coupled to the tibial insert and the tibial tray. The tibial insert is movable relative to the platform and the platform is movable relative to the tibial tray. | 10-02-2008 |
20080288081 | IMPLANT ARTICULAR SURFACE WEAR REDUCTION SYSTEM - An implant articular surface wear reduction system improves orthopedic prosthetic joint longevity by reducing frictional abrasive wear. The system includes a polymeric implant component and a rigid implant component. A hard wear layer is attached to the polymeric implant. The hard wear layer represents one opposing articular surface of a joint. The rigid implant component has a working surface and may represent another opposing articular surface in the joint. In one embodiment, the rigid implant component and the hard wear layer are ceramic. In another embodiment, a non-metallic wear layer is attached to the working surface. The non-metallic wear layer represents another opposing articular surface of the joint. In one embodiment, the polymeric implant component is a tibial implant and the rigid implant component is a femoral implant and the non-metallic wear layer is a polymer, such as polyethylene, self-reinforced polyphenylene, or PEEK. | 11-20-2008 |
20090326668 | TIBIAL BEARING HAVING INCREASED AXIAL-ROTATION - An orthopaedic prosthesis includes a tibial bearing and a femoral component configured to articulate with the tibial bearing. The tibial bearing and the femoral component are configured to promote outward axial rotation of the femoral component on the tibial component during knee flexion. | 12-31-2009 |
20100082111 | Reusable Orthopaedic Instrument Having Drain Holes - A reusable orthopaedic instrument includes a reusable orthopedic trial having a first outer surface and a second outer surface that is opposite the first outer surface. The second outer surface includes a plurality of sidewalls extending outwardly therefrom to form a cavity. A drain hole is formed in the second outer surface at a location within the cavity. The drain hole extends through the reusable orthopaedic trial from the second outer surface to the first outer surface. Further, the second outer surface slopes downwardly from the plurality of sidewalls toward the drain hole. | 04-01-2010 |
20100222890 | MOBILE/FIXED PROSTHETIC KNEE SYSTEMS - A prosthetic knee system includes a tibial tray, a non-rotating tibial insert, and a rotating tibial insert. The non-rotating tibial insert and the rotating tibial insert are selectively coupleable to the tibial tray such that a fixed or a mobile orthopaedic prosthesis may be configured. In some embodiments, the tibial tray may be a fixed or mobile tibial tray. Additionally, in some embodiments, the prosthetic knee system may include a femoral component. | 09-02-2010 |
20100312351 | 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. | 12-09-2010 |
20120035737 | TIBIAL PROSTHESIS - A tibial prosthesis has a bearing component configured for an anterior-medial insertion, which advantageously avoids the extensor mechanism of the knee. A tibial tray may include a banana-shaped boss that corresponds to a notch formed in the bearing component. After the bearing component is inserted along the anterior-medial path, the boss is received within the notch by rotating the bearing component with respect to the tibial tray. This rotation seat the bearing component upon the tibial tray in the manner of a fixed-bearing prosthesis. Alternatively, the boss and notch may define angled central axes which allow straight anterior-medial insertion of the bearing component and locking engagement to the tibial tray. | 02-09-2012 |
20120158152 | PROVISIONAL TIBIAL PROSTHESIS SYSTEM - The present disclosure provides a provisional tibial prosthesis system for a set of prosthetic knee joints for implantation in a natural knee, the provisional tibial prosthesis system including a bearing component and a bearing support, the spacing of the bearing component from the bearing support is adjustable to allow for representation of a variety of different sized final tibial prostheses. In this system, only one provisional bearing component corresponding to each level of constraint is needed and shims are used to adjust the spacing of the bearing component from the bearing support. The shims are slidably insertable between the bearing component and the bearing support in an anterior/posterior direction to allow for adjustment of the spacing of the bearing component from the bearing support. The number of provisional components needed during knee surgery is reduced and adjustment of the system only requires the knee joint to be distracted by a distance equal to the height of a particular shim. | 06-21-2012 |
20120265317 | PIVOTING TIBIAL TRAY - A tibial component for use with a resected tibia can include a medial tray portion adapted to engage a portion of the resected tibia and a lateral tray portion adapted to engage a portion of the resected tibia. A linkage can couple the medial tray portion to the lateral tray portion such that at least one of the medial tray portion and the lateral tray portion is pivotable relative to the other of the medial tray portion and the lateral tray portion to position the medial tray portion and the lateral tray portion at separate angles with respect to each other. | 10-18-2012 |
20130131819 | TIBIAL BEARING COMPONENT FOR A KNEE PROSTHESIS WITH IMPROVED ARTICULAR CHARACTERISTICS - An orthopaedic knee prosthesis includes a tibial bearing component with articular features which operate to protect adjacent soft tissues of the natural knee, promote and/or accommodate desired articulation with an abutting femoral component, and facilitate expedient and effective implantation by a surgeon. | 05-23-2013 |
20130261759 | TIBIAL PROSTHESIS SYSTEMS, KITS, AND METHODS - Tibial prosthesis systems for implantation or use in a knee joint are disclosed. A tibial prosthesis system can include a bearing component, a base component, a shim component, and optionally a spacer component. The shim or spacer component can be inserted between an inferior surface of the bearing component and a superior surface of the base component. The insertion of the shim or spacer component can provide spacing adjustment between the bearing and base components. The shim component can include one or both of a medial edge having a different height than a lateral edge or an anterior edge having a different height than a posterior edge. The differing edge height of the shim component can provide a surgeon with knee joint kinematic insight regarding an angled bone cut before the cut is made, and can allow for sizing of an appropriately permanent prosthesis system using a reduced number of provisional components. | 10-03-2013 |
20130304222 | Structure Improvement Of Orthopaedic Implant - A structure improvement of orthopaedic implant for connecting a distal femur and a proximal tibia, and a stem was implanted into the proximal tibia, inwhich formed to allow inter-engagement between the stem of the tibia and the structure improvement of orthopaedic implant. The structure improvement of orthopaedic implant includes a tibial baseplate, a tibial insert, and a reinforcement. The tibial baseplate forms a recess having a bottom that has a central portion defining a through hole extending through the tibial baseplate. The tibial insert includes a support, a through region, and a projection, wherein an end of the tibial insert forming the projection corresponding to the recess of the tibial baseplate for press-fitting to the tibial baseplate. The reinforcement is inset in the tibial insert and includes a sleeve and a bolt. As such, the advantages of stable coupling includes force resistance, avoids insert loosening then extends prosthetic longevity. | 11-14-2013 |
20130325137 | LIMITED MOTION TIBIAL BEARING - A tibial implant comprising: a baseplate having a bone contacting surface, a bearing support surface and a proximally extending wall at least partially surrounding the bearing support surface; a bearing component slidably mounted with respect to the baseplate bearing support surface, the bearing component having a proximally facing condylar surface and a distally facing surface for contacting the baseplate bearing support surface the proximally and distally facing bearing component surfaces spaced to define a circumferential side surface therebetween; and an elastic gasket element interposed within a gap formed between the baseplate proximally extending wall and the bearing component circumferential side surface. | 12-05-2013 |
20140052269 | PROVISIONAL TIBIAL PROSTHESIS SYSTEM - The present disclosure provides a provisional tibial prosthesis system for a set of prosthetic knee joints for implantation in a natural knee, the provisional tibial prosthesis system including a bearing component and a bearing support, the spacing of the bearing component from the bearing support is adjustable to allow for representation of a variety of different sized final tibial prostheses. In this system, only one provisional bearing component corresponding to each level of constraint is needed and shims are used to adjust the spacing of the bearing component from the bearing support. The shims are slidably insertable between the bearing component and the bearing support in an anterior/posterior direction to allow for adjustment of the spacing of the bearing component from the bearing support. The number of provisional components needed during knee surgery is reduced and adjustment of the system only requires the knee join to be distracted by a distance equal to the height of a particular shim. | 02-20-2014 |
20140081412 | PIVOTING TIBIAL TRAY - A tibial component for implantation at a resected tibia. The tibial component includes a medial tray, a lateral tray, and a connection member between the medial tray and the lateral tray. A first fastener extends from the medial tray to the connection member along a first pivot axle to pivotably couple the medial tray to the connection member. A second fastener is spaced apart from the first fastener and extends from the lateral tray to the connection member along a second pivot axle to pivotably couple the lateral tray to the connection member. The medial tray and the lateral tray are configured to pivot independently of one another with respect to the connection member. | 03-20-2014 |
20140114427 | REVISION KNEE TIBIAL LOCKING MECHANISM - A tibial prosthesis assembly including a tibial component and a tibial insert. The tibial component includes an inferior bone engaging surface, a superior surface, and a first retention feature. The tibial insert includes an inferior tibial component engaging surface, a superior bearing surface, and a second retaining feature. The first and the second retaining features cooperate to mate the tibial insert with the tibial component at one of a plurality of fixed rotational orientations relative to the tibial component. | 04-24-2014 |
20140163687 | TIBIAL BEARING COMPONENT FOR A KNEE PROSTHESIS WITH IMPROVED ARTICULAR CHARACTERISTICS - An orthopaedic knee prosthesis includes a tibial bearing component with articular features which operate to protect adjacent soft tissues of the natural knee, promote and/or accommodate desired articulation with an abutting femoral component, and facilitate expedient and effective implantation by a surgeon. | 06-12-2014 |
20140257505 | TIBIAL BEARING COMPONENT FOR A KNEE PROSTHESIS WITH IMPROVED ARTICULAR CHARACTERISTICS - An orthopaedic knee prosthesis includes a tibial bearing component with articular features which operate to protect adjacent soft tissues of the natural knee, promote and/or accommodate desired articulation with an abutting femoral component, and facilitate expedient and effective implantation by a surgeon. | 09-11-2014 |
20140257506 | TIBIAL PROSTHESIS - A tibial prosthesis has a bearing component configured for an anterior-medial insertion, which advantageously avoids the extensor mechanism of the knee. A tibial tray may include a banana-shaped boss that corresponds to a notch formed in the bearing component. After the bearing component is inserted along the anterior-medial path, the boss is received within the notch by rotating the bearing component with respect to the tibial tray. This rotation seat the bearing component upon the tibial tray in the manner of a fixed-bearing prosthesis. Alternatively, the boss and notch may define angled central axes which allow straight anterior-medial insertion of the bearing component and locking engagement to the tibial tray. | 09-11-2014 |
20140277546 | TIBIAL TRIAL INSTRUMENTS FOR SETTING OFFSET - An orthopaedic surgical instrument assembly is disclosed. The assembly includes a tibial base trial adapted to be positioned on a surgically-prepared proximal end of a patient's tibia, a base fastener, and a stem adaptor secured to the base fastener. The stem adaptor includes a first adaptor body engaged with a lower surface of the tibial base trial and a second adaptor body pivotally coupled to the first adaptor body. A stem trial is removably coupled to the second adaptor body of the stem adaptor. | 09-18-2014 |
20140364956 | TIBIAL INSERT WITH RESISTANCE-ACTUATED POST - Trial joint inserts may have posts that slide along a base, compressing or extending a resistance member, such as a spring, as the post slides. During joint replacement surgery, a surgeon can test resistance members with different amounts of resistance using a trial insert, identify a suitable resistance for the resistance member, and then select a permanent insert with a resistance member having the desired resistance. The systems, devices, and methods of this application allow a surgeon to provide an individualized joint replacement for a patient. | 12-11-2014 |
20150320508 | Patient-Modified Implant - An orthopedic implant includes a first portion including at least one feature modified to be patient-specific and match the anatomy of a specific patient from a three-dimensional digital image of a patient's joint using computer modeling. The orthopedic implant includes a non-custom inner bone-engaging surface including a plurality of planar surfaces configured for engagement with non-custom bone cuts. | 11-12-2015 |
20160022426 | Implant System for Knee Prosthesis - An implant system for knee prosthesis includes a superiorly located femoral bearing block having a femoral component bearing surface and an inferiorly located stem selectively attachable to the bearing block. A strengthening rod is disposed within at least a portion of the femoral bearing block and the stem. | 01-28-2016 |
20160038294 | TIBIAL BEARING COMPONENT FOR A KNEE PROSTHESIS WITH IMPROVED ARTICULAR CHARACTERISTICS - An orthopaedic knee prosthesis includes a tibial bearing component with articular features which operate to protect adjacent soft tissues of the natural knee, promote and/or accommodate desired articulation with an abutting femoral component, and facilitate expedient and effective implantation by a surgeon. | 02-11-2016 |
20160135959 | TIBIAL PROSTHESIS - A tibial prosthesis has a bearing component configured for an anterior-medial insertion, which advantageously avoids the extensor mechanism of the knee. A tibial tray may include a banana-shaped boss that corresponds to a notch formed in the bearing component. After the bearing component is inserted along the anterior-medial path, the boss is received within the notch by rotating the bearing component with respect to the tibial tray. This rotation seat the bearing component upon the tibial tray in the manner of a fixed-bearing prosthesis. Alternatively, the boss and notch may define angled central axes which allow straight anterior-medial insertion of the bearing component and locking engagement to the tibial tray. | 05-19-2016 |