Entries |
Document | Title | Date |
20080243258 | Knee Joint Prosthesis - A knee joint prosthesis is disclosed. The prosthesis has a femoral component and a tibial component. The tibial component has a tibial plateau element fitted in a tibial tray element. A hemi capstan shaped bridge member is provided between replicated condyles on the femoral component. A specially shaped post is provided between kidney shaped meniscal depression on the tibial plateau element. The bridge member and the post act together to form an additional joint for load transfer during deep flexion of the prosthesis in its operative configuration. | 10-02-2008 |
20080275561 | EXTRA-ARTICULAR IMPLANTABLE MECHANICAL ENERGY ABSORBING SYSTEMS AND IMPLANTATION METHOD - A system and method for sharing and absorbing energy between body parts. In one aspect, the method involves identifying link pivot locations, fixing base components and minimally invasive insertion techniques. In one particular aspect, the system facilitates absorbing energy between members forming a joint such as between articulating bones. | 11-06-2008 |
20080275562 | FEMORAL AND TIBIAL BASE COMPONENTS - Various embodiments are directed to base components that are usable with implantable mechanical energy absorbing systems. According to one embodiment, the base component includes a low-profile body having a elongate, straight portion at a first end and a curved body portion at a second end. The second end is elevated as compared to the first 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 base component also includes a plurality of openings positioned along the low-profile body for alignment and purposes of affixation to body anatomy. | 11-06-2008 |
20080275563 | 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 |
20080275564 | 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 |
20080306604 | Orthopaedic Device and Procedure to Realize Such a Device - An orthopaedic device ( | 12-11-2008 |
20090062924 | KNEE JOINT PROSTHESIS - A knee joint prosthesis including a femoral component for attachment to a femur. The femoral component includes an anterior portion, first and second condylar portions extending from the anterior portion and having first and second bearing surfaces, the first and second condylar portions having first and second posterior ends, and a third condylar portion defined between the first and second condylar portions and extending anteriorly beyond the first and second posterior ends. | 03-05-2009 |
20090132055 | ARTHROPLASTY DEVICE - Disclosed is a device and method of tricompartmental arthroplasty of the knee. The device permits arthroplasty of the medial and lateral and patellofemoral compartments of the knee while leaving the anterior and posterior cruciate ligaments intact. The device provides a femoral implant component that includes a trochlear surface and tibial prostheses component which can be secured to the tibia. | 05-21-2009 |
20090265013 | Tibial component of an artificial knee joint - A tibial component of an artificial knee joint is provided which cooperates with a femoral component to allow pivoting rotation of the artificial knee joint in either a clockwise or counterclockwise direction. The tibial component includes a plate with a tapered dovetail rib thereon which allows an insert to be removably secured thereto to act as a meniscal structure for the tibial component. The insert has a proximal surface with left and right wells therein that include valleys to guide rotation of one condylar leg of a femoral component while holding a second condylar leg of the femoral component within the other one of the wells, allowing pivoting rotation in either direction. A nesting of the insert into a portion of the plate minimizes an overall height of the tibial component and minimizing tibial bone resection, while providing a greater resistance to shear forces upon the knee joint. | 10-22-2009 |
20090265014 | Method And Apparatus For Attaching Soft Tissue To An Implant - A system and method for attaching soft tissue to a prosthetic implant can include a prosthetic component that defines a soft tissue attachment region having an attachment surface thereon. A first construct can be formed of porous metal and be removably coupled to the attachment surface. A second construct can be positioned outboard of the soft tissue. A fastener can be engaged to the second construct capturing the soft tissue against the first construct. The fastener can be coupled on a distal end to the first prosthetic component. | 10-22-2009 |
20090276054 | SURGICAL IMPLANTATION METHOD AND DEVICES FOR AN EXTRA-ARTICULAR MECHANICAL ENERGY ABSORBING APPARATUS - A surgical implantation approach for preparing a patient and precisely and effectively placing an energy absorbing apparatus relative to the patient's anatomy. Various surgical implantation apparatus and methods for achieving proper device-to-anatomy juxtapositional relationships are employed in the implantation approach. | 11-05-2009 |
20090287310 | DYNAMIC KNEE BALANCER WITH PRESSURE SENSING - A device for performing a surgical procedure on a knee includes an adjustable femoral portion, a tibial portion and at least one sensor coupled with the femoral and/or tibial portions to sense pressure exerted by the femoral and tibial portions against one another. The femoral portion is adapted for removably coupling with a distal end of a femur to adjust tension in soft tissue adjacent the knee and has at least one positioning feature adapted to move relative to the distal end of the femur as the femoral portion is adjusted, thus helping position a femoral prosthetic on the distal end of the femur. The sensor(s) may be adapted to sense pressure at medial and lateral sides of the knee, and relative pressures may be displayed as data on a visual display. Adjustments to the femoral member may be made to balance pressure at flexion and extension of the knee. | 11-19-2009 |
20090306783 | Total Knee Prosthesis and Method for Total Knee Arthroplasty - A prosthetic knee implant for implantation into a mammal, which accommodates an anterior cruciate ligament substitute to provide stability to the knee implant. The prosthetic knee implant includes a femoral component having a pair of condylar surfaces and a tibial component having a surface portion adapted to slidably engage the femoral component upon rotation of the same. The femoral component further includes a recess between the condyles defining an aperture through the femoral component. The tibial component further includes a center portion defining an aperture through the tibial component substantially at its center. The femoral aperture and the tibial aperture are adapted to receive an anterior cruciate ligament substitute for biasing the mammalian femur and tibia together. Also disclosed is a method used to replace the total knee joint in a mammal with the improved prosthetic knee implant of the present invention. | 12-10-2009 |
20090306784 | Total Knee Prosthesis and Method for Total Knee Arthroplasty - A prosthetic knee implant for implantation into a mammal, which accommodates an anterior cruciate ligament substitute to provide stability to the knee implant. The prosthetic knee implant includes a femoral component having a pair of condylar surfaces and a tibial component having a surface portion adapted to slidably engage the femoral component upon rotation of the same. The femoral component further includes a central femoral recess between the condyles providing access to the femur for drilling a channel through which a cruciate ligament substitute may be integrated into the femur. The tibial component further includes a center portion defining an aperture through which the ligament substitute maybe threaded through the tibia and integrated therein, or anchored upon its surface. Also disclosed is a method used to replace the total knee joint in a mammal with the improved prosthetic knee implant of the present invention. | 12-10-2009 |
20090326663 | ORTHOPAEDIC KNEE PROSTHESIS 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 with respect to the tibial component during knee flexion. | 12-31-2009 |
20090326664 | POSTERIOR CRUCTIATE-RETAINING 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 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 may be increased during mid-flexion. | 12-31-2009 |
20090326665 | 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 radius of curvature of the condyle surface may be increased during mid-flexion. | 12-31-2009 |
20100016977 | PCL RETAINING ACL SUBSTITUTING TKA APPARATUS AND METHOD - A new class of total knee replacement includes a posterior cruciate ligament retaining anterior cruciate ligament substituting apparatus and method. Particular design considerations include: 1) a specific extension surface separate from the flexion surface, 2) rotational control in full extension to create the so-called screw-home mechanism, 3) translation restraints that will substitute for ACL function including a CAM-post or other abutment mechanism while allowing normal PCL function which should improve natural proprioception, 4) a modified femoral component with separate radii of curvature for the flexion and extension arcs of at least one condyle, and 5) a tibial component with slope built into the posterior aspect of its bone contacting surface on both sides of the PCL. | 01-21-2010 |
20100114323 | KNEE PROSTHESIS KIT WITH WINGED SLEEVES AND MILLING GUIDE - A knee prosthesis kit includes single-winged and double-winged metaphyseal sleeve components. A milling guide and reamers in the kit allow for a cavity to be prepared to receive the metaphyseal sleeve components by pivoting one of the reamers on a portion of the milling guide. The instruments allow the cavity to be aligned with the intramedullary canal regardless of the relative hardness of the bone in the vicinity of the cavity. | 05-06-2010 |
20100121457 | EXTRA-ARTICULAR IMPLANTABLE MECHANICAL ENERGY ABSORBING SYSTEMS AND IMPLANTATION METHOD - A system and method for sharing and absorbing energy between body parts. In one aspect, the method involves identifying link pivot locations, fixing base components and minimally invasive insertion techniques. In one particular aspect, the system facilitates absorbing energy between members forming a joint such as between articulating bones. | 05-13-2010 |
20100222889 | KNEE AND SHOULDER JOINT PROSTHESIS - The present disclosure relates to prosthetic knee implants ( | 09-02-2010 |
20100292805 | ARTIFICIAL KNEE JOINT INCLUDING A FLECTION IN A BEARING MEMBER - An artificial knee joint is provided in which a flexion is formed at the bearing member and includes a femur joint member which is joined to an end portion of a tibia near a femur; a tibia joint member which is joined to an end portion of a femur near a tibia; and a bearing member between the femur joint member and the tibia joint member, wherein the bearing member includes a groove where a planar front flexion and a planar rear flexion at an upper plane, in order to provide an artificial knee joint movement similar to a real knee movement. | 11-18-2010 |
20110071643 | SURGICAL IMPLANTATION METHOD AND DEVICES FOR AN EXTRA-ARTICULAR MECHANICAL ENERGY ABSORBING APPARATUS - A surgical implantation approach for preparing a patient and precisely and effectively placing an energy absorbing apparatus relative to the patient's anatomy. Various surgical implantation apparatus and methods for achieving proper device-to-anatomy juxtapositional relationships are employed in the implantation approach. | 03-24-2011 |
20110125278 | TOTAL KNEE PROSTHESIS - The present invention relates to a total knee prosthesis. This prosthesis includes a femoral implant ( | 05-26-2011 |
20110137425 | TOTAL KNEE PROSTHESIS AND RANGE OF ELEMENTS FOR PRODUCING SAID PROSTHESIS - The invention concerns a prosthesis ( | 06-09-2011 |
20110137426 | 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. | 06-09-2011 |
20120089234 | KNEE JOINT PROSTHESIS - A knee joint endoprosthesis is provided with a simplified construction. The knee joint endoprosthesis consists of a femur component and a tibia component which comprise cooperating joint surfaces that are 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 centre of rotation upon a flexure of the knee joint endoprosthesis. The rotation guide arrangement comprises a first guide element having a first guidance surface and a second guide element having a second guidance surface which cooperates with the first guidance surface. The tibia component comprises the first guide element and 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. | 04-12-2012 |
20120101585 | MOTION FACILITATING TIBIAL COMPONENTS FOR A KNEE PROSTHESIS - An orthopaedic tibial prosthesis includes a tibial baseplate sized and shaped to cover substantially all of a resected proximal tibial surface, and a tibial bearing component sized to leave a posteromedial portion of the tibial baseplate exposed when the tibial bearing component is mounted to the baseplate. The exposed posteromedial portion of the tibial baseplate includes a chamfered profile which cooperates with a correspondingly chamfered profile at a posteromedial edge of the tibial bearing component to create a substantially continuous chamfer extending from the resected tibial surface to the medial articular surface of the tibial bearing component. Advantageously, this chamfer leaves an absence of material (i.e., a relief or void) at the posteromedial edge of the tibial prosthesis, thereby enabling deep flexion of the prosthesis without impingement between the tibial prosthesis and adjacent anatomic tissues or prosthetic structures. | 04-26-2012 |
20120109324 | LOW STRESS ALL POLY TIBIAL COMPONENT - A tibial component for use in conjunction with a knee replacement surgery. An inferior surface of the tibial component may be concave to thereby improve bonding between the tibial component and a tibia. The tibial component may produce low stress in the cement mantle during in-vivo loading. A stem extending from the inferior surface of the tibial component may include an anterior curvature to facilitate the use of minimally evasive surgical techniques. The stem may further include medial-lateral wing portions with a posterior curvature to provide improved support. | 05-03-2012 |
20120123551 | 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. | 05-17-2012 |
20120150307 | Pyrocarbon Orthopedic Implant - An orthopedic prosthetic device having at least one pyrocarbon insert is provided. The prosthetic device can include a prosthetic component having an articulating surface and a bone engagement surface. The articulating surface can be formed of a material that is distinct from pyrocarbon and is arranged to receive the at least one pyrocarbon insert so as to position a pyrocarbon articulating surface of the at least one pyrocarbon insert relative to the prosthetic component articulating surface. | 06-14-2012 |
20120239158 | Posterior Cructiate-Retaining 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 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 may be increased during mid-flexion. | 09-20-2012 |
20130006371 | SYSTEM AND METHOD OF TRIALING A KNEE PROSTHESIS - A method of trialing prosthetic components of a knee prosthesis including positioning a femoral trial component on a surgically-prepared distal end of a patient's femur, assembling a tibial bearing trial component, and positioning the tibial bearing trial component on a tibial base trial component seated on a surgically-prepared proximal end of a patient's tibia. The method may also include adjusting the patient's leg with the tibial bearing trial component engaging the femoral trial component, and readjusting the patient's leg with the tibial bearing trial component engaging the femoral trial component after positioning the tibial bearing trial component on the tibial base trial component and a keel punch. | 01-03-2013 |
20130073049 | MODULAR SPACER DEVICE FOR JOINTS OF THE HUMAN BODY - Disposable modular spacer device of the articulation of a knee including a tibial element, constrainable to an end of the tibial bone in proximity of the articulation of the knee and including a lower surface and an upper surface provided with a radius of curvature R | 03-21-2013 |
20130079885 | FIXED-BEARING KNEE PROSTHESIS HAVING A LOCKING MECHANISM WITH A CONCAVE-TO-CONVEX MATING INTERFACE - 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. | 03-28-2013 |
20130110250 | METHOD OF ESTIMATING SOFT TISSUE BALANCE FOR KNEE ARTHROPLASTY | 05-02-2013 |
20130150976 | Posterior Stabilized Knee With Varus-Valgus Constraint - A knee prosthesis in one embodiment includes a femoral component having a notch defined between spaced apart medial and a lateral condyle surfaces, the notch defining an elongated cam housing having a posterior cam at one end of the cam housing, and a tibial component including (i) a platform, (ii) a bearing supported on and rotatable in relation to the platform, the bearing defining medial and lateral bearing surfaces, and (iii) a spine projecting superiorly from the bearing within the cam housing, wherein the spine includes an anterior face and an opposite posterior face facing the posterior cam when the medial and lateral condyle surfaces are in articulating contact with the medial and lateral bearing surfaces, wherein the posterior face of the spine is concave along substantially the entire height of the spine, and wherein the spine terminates in a convex rounded posterior peak. | 06-13-2013 |
20130282131 | Knee Arthrodesis Implant - A knee arthrodesis implant has a femur nail and a tibia nail. A connecting module has two longitudinally separated half shells that when connected form a passage. One end of the connecting module is coupled to a femur nail neck and the other end is coupled to a tibia nail neck. The half shells have a plurality of corresponding recesses extending perpendicularly to the passage. Each recess receives a tensioning screw, and tightening the tensioning screws couples the femur and tibia nail necks to the connecting module by holding the femur and tibia nail necks within the passage by frictional contact. Each of the two half shells is angled along its length, an angle of one of the half shells corresponding to an angle of the other of the half shells, allowing the tibia nail and femur nail to extend from the passage at an angle from one another. | 10-24-2013 |
20130282132 | 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. | 10-24-2013 |
20140067075 | Extra-Articular Implantable Mechanical Energy Absorbing Systems - A system and method for sharing and absorbing energy between body parts. In one particular aspect, the system facilitates absorbing energy between members forming a joint such as between articulating bones. | 03-06-2014 |
20140142713 | KNEE PROSTHESIS ASSEMBLY HAVING PROPORTIONAL TROCHLEAR GROOVE GEOMETRY - An implantable orthopaedic knee prosthesis includes a femoral component including an articular surface configured to engage a tibial bearing and a laterally-angled trochlear groove defined in the articular surface. The trochlear groove of the femoral component is configured to receive a patella component in a first location at a first degree of flexion and a second location at a second degree of flexion. The second degree of flexion is greater than the first degree of flexion. An arced imaginary line defines a central section of the trochlear groove. When the femoral component is viewed in a first coronal plane extending through the first location, the arced imaginary line has a first radius of curvature. When the femoral component is viewed in a second coronal plane extending through the second location, the arced imaginary line has a second radius of curvature that is less than the first radius of curvature. | 05-22-2014 |
20140296990 | KNEE ARTHROPLASTY TIBIA COMPONENT AND KNEE ARTHROPLASTY - A tibia component of a knee arthroplasty to be connected to a tibia includes a first tibia connecting structure and a second tibia connecting structure. The first tibia connecting structure can be inserted into a radial groove on the tibia along a radial direction of the tibia to limit the motion of the tibia component in the axial direction of the tibia. The second tibia connecting structure can be inserted into an axial groove on the tibia along the axial direction of the tibia to limit the motion of the tibia component in the radial direction of the tibia. The first and the second connecting structures provide the radial and axial bonding force to the tibia and the knee arthroplasty, so that the amount of bone cement used can be reduced and may beneficial to revision knee arthroplasty operation. | 10-02-2014 |
20140330388 | ARTIFICIAL KNEE JOINT IMPLANT - An artificial knee joint includes a femoral component and a tibial plate. The femoral component includes a first joint face disposed adjacent to a medial collateral ligament of a patient, and a second joint face disposed adjacent to a lateral collateral ligament of the patient. The first and second joint faces respectively have first and second medial pivot guide portions. A reference face extending orthogonal to the left-right direction is defined between the first and second joint faces. An amount ΔD | 11-06-2014 |
20140379091 | FEMORAL 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. | 12-25-2014 |
20150032215 | Patient-Adapted Posterior Stabilized Knee Implants, Designs and Related Methods and Tools - Articular repair implants, implant components, systems, methods, and tools are disclosed. Various embodiments provide improved features for knee joint articular repair systems designed for posterior stabilization, including deep-dish configurations, and box, cam, and/or post features. Additionally, various embodiments include patient-adapted (e.g., patient-specific and/or patient-engineered) features. | 01-29-2015 |