Patellar Bone Patents (Class 623/20.18)
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Patent number: 12208023Abstract: A surgical instrument system includes a commonly-sized orthopaedic surgical instrument assembly for use in implanting a femoral component, along with a number of orthopaedic surgical instrument assemblies having varying sizes of instruments of use in implanting a tibial tray component and a patella component.Type: GrantFiled: October 27, 2020Date of Patent: January 28, 2025Assignee: DEPUY IRELAND UNLIMITED COMPANYInventors: Daniel N. Huff, Kaela A. Wong, Niki Gosling, Ivan Velikanov, Talha Mansur, Paige Buckley, Joanne Lewis
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Patent number: 11992414Abstract: An implant system for a knee comprising a femur and a patella. The implant system includes a patella implant comprising an implant body. The implant body comprises a bone facing surface, an articular facing surface, and at least one dimple. The bone facing surface engages bone beneath an implant site formed in the patella. The articular facing surface faces towards an articulating surface of the femur and has a non-anatomical shape (such as a dome). The dimples are formed in the articular facing surface and have a load bearing surface to engage against the articulating surface of the femur. The load bearing surface may have a contour that substantially corresponds to a spherical portion of a generally spherical segment or has an elongated, partially oval shape, and may be configured to increase contact area with the articulating surface of the femur, reduce stress concentrations, and increase resistance to dislocation subluxation.Type: GrantFiled: October 29, 2019Date of Patent: May 28, 2024Assignee: Arthrosurface IncorporatedInventor: Steven W. Ek
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Patent number: 11331112Abstract: A surgical guide system comprises a guide body having a receiver and a reference plate joined by a connecting arm, a portion of the receiver and a portion of the reference plate intersecting a guide axis, the guide body operable for at least one bone to be interposed between the receiver and reference plate. The guide body further comprising a shuttle cable configured on the reference plate for engagement with a surgical tool A method includes positioning the surgical guide system on at least one bone, the bone the having a first side and a second side, guiding a surgical tool through a hole in the at least one bony structure, engaging a portion of the shuttle cable, and retrieving a first end of the shuttle cable through the hole.Type: GrantFiled: November 5, 2020Date of Patent: May 17, 2022Inventor: Mason James Bettenga
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Patent number: 11129720Abstract: A knee joint prosthesis is capable of moving between an extended position and a flexion position. The knee joint prosthesis includes a femoral component that is configured to be mounted to a femur, a tibial component that is configured to be mounted to a tibia, a post fixedly connected to one of the femoral component and the tibial component, and a cam recess defined on the other of the femoral component and the tibial component that is configured to be engaged by the post in either the extended position or the flexion position of the knee joint prosthesis. The knee joint prosthesis may also include an artificial ligament that extends between the femoral component and the tibial component. The post and the ligament mimic one of the ACL and PCL.Type: GrantFiled: March 5, 2019Date of Patent: September 28, 2021Inventor: Jonathan P. Garino
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Patent number: 10918763Abstract: A combined fully organic high molecular material artificial knee joint, comprising a femur condyle (2), a tibia holder (4) and a tibia liner (3), the femur condyle (2) and the tibia holder (4) being formed by polyether ether ketone (PEEK) or derivatives thereof, and the tibia liner (3) being formed by ultra-high molecular weight polyethylene (UHMWPE). The tibia holder (4) comprises a platform (6) and a stable wing positioning portion (5) vertical thereto; upper and lower ends of the tibia liner (3) are jointed with the femur condyle (2) and the platform (6) respectively; the femur condyle (2) buffers a slide surface of the tibia liner (3); and the tibia holder (4) can finely move relative to a fixed surface of the tibia liner (3), and buffering of the femur condyle (2) against the slide surface of the tibia liner (3) matches fine movement of the tibia holder (4) relative to the tibia liner (3).Type: GrantFiled: September 25, 2015Date of Patent: February 16, 2021Assignee: JIANGSU OKANI MEDICAL TECHNOLOGY CO., LTDInventors: Jack Zhu, Longwei Xu
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Patent number: 10893948Abstract: Disclosed herein are patellar implants and methods to prepare bone for receiving the same. The patellar implant may include an articulating surface with an elliptically shaped median ridge. The anterior surface of the patellar implant may have a non-planar surface to engage with a resected natural patella. The non-planar surface may allow for varying thickness of the patellar implant. The patellar implant may include dual attachment features to secure patellar implant to a resected patella by onlay and inlay techniques. A method for attaching a patellar implant to a patella may include onlay and inlay techniques and may further include bone preparation at the implant-bone interface.Type: GrantFiled: October 25, 2018Date of Patent: January 19, 2021Assignee: Howmedica Osteonics Corp.Inventors: Stuart L. Axelson, Jr., Robert Davignon, Sanghita Bhattacharya, Michael C. Ferko, Peter Wellings
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Patent number: 10159576Abstract: A trochlear groove prosthesis includes a base plate and cap. The base plate and cap are shaped to correspond to the shape of the trochlear groove. A cut is made in the femur to remove the worn or damaged trochlear groove. The base plate is attached to the cut portion of the femur. The cap is mated with the base plate. The prosthesis and procedure provide a properly shaped prosthesis with a single planar cut of the femur.Type: GrantFiled: April 19, 2010Date of Patent: December 25, 2018Assignee: Kyon AGInventors: Slobodan Tepic, Jacek DeHaan
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Patent number: 9833324Abstract: A human knee prosthetic implant having a tibia component forming first and second medial concave surfaces and first and second lateral concave surfaces, and a femur component forming first and second medial convex surfaces and first and second lateral convex surfaces. The tibia and femur surfaces are formed to provide contact interaction in full extension, a mid flexion range and in a state of full flexion of the knee prosthetic implant.Type: GrantFiled: January 8, 2016Date of Patent: December 5, 2017Assignee: EVA15 LLCInventor: J. David Blaha
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Patent number: 9498334Abstract: An orthopedic shoulder prosthesis includes glenoid defect-filling component configured to be implanted within a defect in a glenoid of a patient. The glenoid defect-filling component includes a porous metallic body and a plurality of holes formed in the porous metallic body, the plurality of holes being arranged in a pattern to receive a number of pegs of a discrete polymer glenoid component.Type: GrantFiled: March 27, 2012Date of Patent: November 22, 2016Assignee: DEPUY SYNTHES PRODUCTS, INC.Inventors: Kyle E. Lappin, Jason M. Chavarria
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Patent number: 9498342Abstract: 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.Type: GrantFiled: December 30, 2010Date of Patent: November 22, 2016Assignee: DEPUY IRELAND UNLIMITED COMPANYInventors: Abraham P. Wright, David S. Barrett, William P. Barrett
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Patent number: 9358117Abstract: A system for replacing a trochlear groove region of a femur. The system includes a prosthesis that includes a bone contact surface and a periphery that defines an outer perimeter. The bone contact surface has a plurality of protrusions and a spatial configuration with respect to one another. Additionally, the system includes a first template that has a plurality of guide holes and a first periphery that defines an outer perimeter that substantially corresponds with the periphery of the prosthesis. Also, included in the system is a second template that has a plurality of guide holes and a second periphery that defines an outer perimeter that substantially corresponds with the periphery of the prosthesis. The plurality of guide holes of the second template are spatially arranged with respect to the second periphery to substantially match the spatial configuration of the plurality of protrusions of the prosthesis.Type: GrantFiled: February 25, 2014Date of Patent: June 7, 2016Assignee: Stryker CorporationInventors: Carlos E. Collazo, Stuart L. Axelson, Jr., Michael C. Ferko, Emily Hampp
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Patent number: 9017414Abstract: Disclosed is a trial implant having a body and a tab. The body may include a recess and may be sized to closely approximate a permanent implant. The tab may be more durable than the body, and may be disposed within the body and wholly contained within the recess. Also disclosed is a method of performing a trialing procedure including providing a trial implant as described, providing a tool to attach to the tab, inserting the implant onto a resected joint, evaluating and extracting the implant. The same procedure may then be performed with a second implant. The method may further include a tool having an attachment portion that is substantially or wholly contained within the recess. A kit is disclosed including a plurality of trial implants of incrementally different shapes and sizes. The kit may further include a tool. Also disclosed is a method of making the described implant.Type: GrantFiled: November 18, 2008Date of Patent: April 28, 2015Assignee: Howmedica Osteonics Corp.Inventors: John Jude Grecco, Troy Allen McMillen
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Patent number: 8986306Abstract: A method of surgically preparing a patella for implantation of a patella prosthetic component is disclosed.Type: GrantFiled: June 26, 2012Date of Patent: March 24, 2015Assignee: DePuy (Ireland)Inventors: Abraham P. Wright, Kyle B. Thomas, J. Bohannon Mason, Peter F. M. Choong, Mark W. Pagnano, Thomas P. Vail, Raymond E. Randle, James T. Caillouette, David C. Pollock, Jeffrey B Waffensmith, Matthew V Leyden
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Publication number: 20140288658Abstract: A disposable modular patella protector and clamp is disclosed, providing the ability for a surgeon to shift the procedure sequence of the implantation of the patella from the end of a total knee replacement procedure to anytime during the procedure by providing a modular clamp that holds and protects the patella prosthesis and prepared patella. The clamp may be positioned in a manner in which it does not obstruct the patella or the prosthesis, allowing the surgeon to attend to other elements of the procedure while the bone cement is allowed to cure.Type: ApplicationFiled: March 20, 2014Publication date: September 25, 2014Inventors: Tyrone Ploch, Patrick Therien, Mark Broberg
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Publication number: 20140277444Abstract: Implant apparatus and methods directed toward treating conditions involving the knee joint and the patella specifically are disclosed. Implants that maintain alignment or address misalignment of a patella through a full range of motion of the knee joint are disclosed.Type: ApplicationFiled: March 7, 2014Publication date: September 18, 2014Applicant: MOXIMED, INC.Inventors: Anton G. Clifford, Josef L. Friedmann, Michael E. Landry, David Lowe, Mary O'Connell, Heber Saravia
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Patent number: 8834574Abstract: 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.Type: GrantFiled: December 6, 2011Date of Patent: September 16, 2014Assignee: Zimmer, Inc.Inventors: Dwight T. Todd, Srinivas R. Setty, Aravinda R. Bobba
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Publication number: 20140228964Abstract: A knee implant for use in total knee arthroplasty, the implant including a femoral component having a trochlear groove and an intercondylar notch, a tibial component engaged with the femoral component, and a patellar component having an upper domed surface, wherein the domed surface is configured for at least line contact articulation with the trochlear groove of the femoral component.Type: ApplicationFiled: February 7, 2014Publication date: August 14, 2014Inventors: William D. Lew, Robert D. Carter, Ramon B. Gustilo
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Patent number: 8747478Abstract: A prosthetic patellar implant has a posterior articulation surface and an anterior attachment surface. The anterior attachment surface has a medial attachment surface and a lateral attachment surface. The medial and lateral attachment surfaces can be planar and angled relative to one another, meeting at a common intersection medially offset from the sagittal centerline of the implant. The medial and lateral attachment surfaces can include convexities. The anterior attachment surface can have one or more pegs and/or recesses.Type: GrantFiled: February 6, 2012Date of Patent: June 10, 2014Assignees: IMDS CorporationInventors: Michael Ries, Nicholas Slater, Joshua A. Butters, Jordan Hoof, Bjorn Rindal
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Publication number: 20140148909Abstract: 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.Type: ApplicationFiled: November 27, 2013Publication date: May 29, 2014Applicant: Exactech, Inc.Inventor: Laurent Angibaud
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Patent number: 8696754Abstract: A knee prosthesis assembly can comprise a patella prosthesis adapted to be secured to a natural patella portion having an anterior surface and a posterior surface. An articulating portion can have a posteriorly facing portion and an anteriorly facing portion. The posteriorly facing portion can have a spherical articular surface. A porous portion can have a first portion that engages the anteriorly facing portion and a second portion that engages the natural patella portion. A fastener can pass entirely through a passage formed at a centermost portion of the natural patella portion from the anterior surface to the posterior surface and into a bore defined in the centermost portion of the porous portion to securably engage the porous portion.Type: GrantFiled: September 3, 2008Date of Patent: April 15, 2014Assignee: Biomet Manufacturing, LLCInventors: John M. Cuckler, Christopher Peters
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Patent number: 8556982Abstract: An orthopaedic implant includes a patella component having a posterior bearing surface configured to articulate with the femoral condyles of a femur, and an anterior surface having a number of pegs extending outwardly therefrom. The superior edge of the patella component is thickened relative to conventional dome-shaped patella components.Type: GrantFiled: December 21, 2011Date of Patent: October 15, 2013Assignee: DePuy (IRELAND)Inventors: Abraham P. Wright, Wayne M. Goldstein
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Patent number: 8529631Abstract: The invention relates to a base component for a tibial implant, comprising a lateral compartment (14), a medial compartment (12) and an anterior connection portion (16) which connects the lateral compartment (14) and the medial compartment (12) to one another at anterior. A portion (18) open to posterior is provided between the lateral compartment (14) and the medial compartment (12). The lateral component (14) and the medial component (12) each have a lower side and an upper side, with at least one of the lower sides being configured for the fastening of the base component to the tibia. A marginal web (22, 22?) is formed at at least one of the compartments (12, 14), starting from the upper side, said marginal web forming a receiving shell for a meniscus component (30, 32) of the tibial implant together with the upper side of the compartment.Type: GrantFiled: July 18, 2008Date of Patent: September 10, 2013Assignee: Zimmer, GmbHInventors: Cosimo Donno, Roger Scherrer
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Patent number: 8512411Abstract: A method of synthetic grafting of bone-tendon-bone autograft harvest sites using preformed synthetic trapezoidal implants. The implants are formed of tricalcium phosphate, an osteoconductive bone graft substitute and filler, which allows for simultaneous controlled absorption and promotion of osteogenesis. The implants are preferably pretreated or presoaked intraoperatively in autologous blood, or autologous conditioned plasma, or bone marrow aspirate products to enhance healing ability. The implants are trimmed to match the patellar pole shape, pressed into place in the bone voids, and oversewn to complete the procedure.Type: GrantFiled: March 26, 2010Date of Patent: August 20, 2013Assignee: Arthrex, Inc.Inventors: Robert K. Sluss, James P. Bradley
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Patent number: 8460392Abstract: An orthopaedic implant assembly includes a plurality of dome patella components and a plurality of anatomic patella components. Each of the dome patella components and the anatomic patella components is interchangeable with a plurality of femoral components.Type: GrantFiled: December 30, 2010Date of Patent: June 11, 2013Assignee: DePuy (Ireland)Inventors: Abraham P. Wright, Charles D. Christie
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Publication number: 20130060342Abstract: 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, and an anterior portion. 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 affixing the implant.Type: ApplicationFiled: October 17, 2012Publication date: March 7, 2013Applicant: Moximed, INCInventor: Moximed, Inc.
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Publication number: 20130060343Abstract: 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, and an anterior portion. 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 affixing the implant.Type: ApplicationFiled: October 22, 2012Publication date: March 7, 2013Applicant: MOXIMED, INC.Inventor: Moximed, Inc.
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Publication number: 20130030539Abstract: A method of surgically preparing a patella for implantation of a patella prosthetic component is disclosed.Type: ApplicationFiled: June 26, 2012Publication date: January 31, 2013Inventors: Abraham P. Wright, Kyle B. Thomas, J. Bohannon Mason, Peter F.M. Choong, Mark W. Pagnano, Thomas P. Vail, Raymond E. Randle, James T. Caillouette, David C. Pollock
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Patent number: 8361160Abstract: A device and methods for use in determining the trajectory of a patella of a patient during a navigated knee replacement surgical procedure are described. The device includes a first component including a mounting for attachment to a posterior surface of the patient's patella and a second component having an outer surface presenting a formation adapted to engage with a femoral part of the patient's knee. A slider mechanism allows the second component to translate relative to the first component in a substantially medial-lateral direction of the patient when the first component is attached to the patient's patella. The device can be used in a method to help determine the medial-lateral position for a patella implant.Type: GrantFiled: April 5, 2007Date of Patent: January 29, 2013Assignee: DePuy Orthopadie GmbHInventors: Joerg Haechler, John Naybour
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Publication number: 20120172994Abstract: An orthopaedic implant assembly includes a plurality of dome patella components and a plurality of anatomic patella components. Each of the dome patella components and the anatomic patella components is interchangeable with a plurality of femoral components.Type: ApplicationFiled: December 30, 2010Publication date: July 5, 2012Inventors: Abraham P. Wright, Charles D. Christie
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Publication number: 20120136451Abstract: A surgical kit includes an orthopaedic implant, an orthropaedic trial and a bone protector. All three components have bone-contacting surfaces sized and shaped to be placed against a resected bone surface. The orthopaedic implant and trial are thicker than the bone protector. The bone protector has a flat bearing surface while the implant and trial have curved articulating surfaces. In use, the bone protector is temporarily mounted on the resected bone surface to cover and protect the resected bone surface while other bones of the joint are resected. A retractor can be placed against the bone protector and used as a lever to move other bones of the joint for greater access during surgery. The bone protector serves as the fulcrum of the lever and protects the resected bone from damage. The kit, bone protector and method should be useful in minimally invasive total joint arthroplasty.Type: ApplicationFiled: February 3, 2012Publication date: May 31, 2012Applicant: DEPUY PRODUCTS, INC.Inventor: WOLFGANG FITZ
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Publication number: 20120123550Abstract: An orthopaedic implant includes a patella component having a posterior bearing surface configured to articulate with the femoral condyles of a femur, and an anterior surface having a number of pegs extending outwardly therefrom. The superior edge of the patella component is thickened relative to conventional dome-shaped patella components.Type: ApplicationFiled: December 21, 2011Publication date: May 17, 2012Inventors: Abraham P. Wright, Wayne M. Goldstein
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Patent number: 8142509Abstract: Embodiments of the present invention provide patellar component designs that are optimally shaped to help reduce shear force and accommodate slight implantation error. Further, they help lessen anterior knee pain, particularly during deep-flexion activities and help ease the transition during the range of knee movement in a controlled way.Type: GrantFiled: January 23, 2007Date of Patent: March 27, 2012Assignee: Smith & Nephew, Inc.Inventors: Brian W. McKinnon, Jason K. Otto
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Patent number: 8128704Abstract: Various embodiments of femoral trochlea prostheses useable in a knee joint. The knee joint includes a patella and a distal femur with a femoral trochlea, or patello-femoral groove. In one embodiment, a femoral trochlea prosthesis includes a nonarticulating surface including contoured surfaces and/or planar surfaces. The present disclosure also provides a method for preparing a bone surface for receiving the prostheses described herein.Type: GrantFiled: February 6, 2007Date of Patent: March 6, 2012Assignee: Zimmer, Inc.Inventors: Jeffrey D. Brown, Adam M. Griner, Robert A. Hodorek, Raymond C. Parisi, Brian E. Vanskyock, Toby N. Farling
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Patent number: 8092544Abstract: An orthopaedic implant includes a patella component having a posterior bearing surface configured to articulate with the femoral condyles of a femur, and an anterior surface having a number of pegs extending outwardly therefrom. The superior edge of the patella component is thickened relative to conventional dome-shaped patella components.Type: GrantFiled: June 30, 2008Date of Patent: January 10, 2012Assignee: DePuy Products, Inc.Inventors: Abraham P. Wright, Wayne M. Goldstein
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Publication number: 20110218635Abstract: An implant for bone re-surfacing in a joint, the implant having a bearing platform having a front surface which forms a bearing surface and a back surface, and securing apparatus projecting from the back surface, the securing apparatus having a locking surface arranged to bear against an undercut surface of the bone to secure the implant against the bone.Type: ApplicationFiled: July 10, 2009Publication date: September 8, 2011Inventors: Andrew Arthur Amis, Robert Michael Wozencroft, Justin Peter Cobb
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Patent number: 7972383Abstract: An orthopaedic implant includes a patella component having a posterior bearing surface configured to articulate with the femoral condyles of a femur, and an anterior surface having a number of pegs extending outwardly therefrom. The superior edge of the patella component is thickened relative to conventional dome-shaped patella components.Type: GrantFiled: June 30, 2008Date of Patent: July 5, 2011Assignee: DePuy Products, Inc.Inventors: Wayne M. Goldstein, Abraham P. Wright
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Patent number: 7896922Abstract: The present invention provides a method and device for restoring individual patient joint kinematic using minimally invasive surgical procedures. The instrumentation of the invention sculpts the articular surface of a first bone that normally articulates in a predetermined manner with a second bone. The implant system is comprised of implants that provide intraoperative surgical options for articular constraint and facilitate proper alignment and orientation of the joint to restore kinematics as defined by the individual patient anatomy.Type: GrantFiled: April 20, 2009Date of Patent: March 1, 2011Assignee: Alexandria Research Technologies, LLCInventors: Gerard A. Engh, Wesley D. Johnson
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Publication number: 20110022179Abstract: A knee replacement system, and a method for supplying and implanting a knee replacement system, for enabling natural knee movement in a leg in a patient, including: a medial femoral component having a medial femoral articulating surface with a sagittal plane profile including four medial femoral arcuate portions scaled by a first femoral scaling factor; a lateral femoral component having a lateral femoral articulating surface with a sagittal plane profile including four lateral femoral arcuate portions scaled by a second femoral scaling factor; a medial tibial component having a medial tibial articulating surface that articulates with the medial femoral articulating surface and includes a first raised medial edge that increases in width in an anterior direction; and a lateral tibial component having a lateral tibial articulating surface that articulates with the lateral femoral articulating surface and includes a second raised medial edge that increases in width in the anterior direction.Type: ApplicationFiled: June 15, 2010Publication date: January 27, 2011Inventors: Thomas P. Andriacchi, Jorge O. Galante
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Publication number: 20110015749Abstract: The present invention provides a modular device for restoring individual joint kinematics using minimally invasive surgical procedures. The modular implants include distinct components that include tethering means. The modular implants provide intraoperative surgical options for articular constraint and facilitate proper alignment and orientation of the joint to restore kinematics as defined by the individual patient anatomy.Type: ApplicationFiled: June 18, 2010Publication date: January 20, 2011Applicant: Alexandria Research Technologies, LLCInventors: Gerard A. Engh, Wesley D. Johnson
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Publication number: 20110004315Abstract: The present invention relates to methods for making oxidation resistant medical devices that comprise polymeric materials, for example, ultra-high molecular weight polyethylene (UHMWPE). The invention also provides methods of making antioxidant-doped medical implants, for example, doping of medical devices containing cross-linked UHMWPE with vitamin E by diffusion and materials used therein.Type: ApplicationFiled: September 15, 2010Publication date: January 6, 2011Applicants: The General Hospital Corporation, Cambridge Polymer Group, Inc.Inventors: Orhun K. MURATOGLU, Stephen H. Spiegelberg
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Publication number: 20100305708Abstract: Disclosed herein are methods and devices for repairing articular surfaces in a knee joint. The articular surface repairs are customizable or highly selectable for each patient and geared toward providing optimal fit and function. Kits are also provided to enable customized repairs to be performed.Type: ApplicationFiled: May 12, 2010Publication date: December 2, 2010Applicant: CONFORMIS, INC.Inventors: Philipp Lang, Daniel Steines, Wolfgang Fitz
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Patent number: 7833274Abstract: A femoral prosthesis may be formed as a femoral component incorporating a base material and an articulating material. In one exemplary embodiment, the base material is a metal and the articulating material is a polymer. Specifically, the base material provides strength and rigidity to the femoral component, while the articulating material contacts a tibial prosthesis or natural tibia during joint articulation. In one exemplary embodiment, the articulating material forms the articulating surface of one or more condyle portions of the femoral component.Type: GrantFiled: January 14, 2009Date of Patent: November 16, 2010Assignee: Zimmer, Inc.Inventors: Oludele O. Popoola, Joel G. Scrafton
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Patent number: 7758651Abstract: Instruments and a method for preparing the articular surface of the patella to receive a patellar implant are utilized without everting the patella. A medial or lateral parapatellar incision and an anterior midline incision are made adjacent the patella. The patella is clamped with a patella clamp, a hole is drilled from the anterior surface of the patella. A reamer is inserted through the medial or lateral parapatellar incision and is then attached to the end of a drive shaft that extends outwardly beyond the articular surface of the patella. The posterior facing cutting surface of the reamer device is then placed in contact with the articular surface. The drive shaft is then rotated and moved anteriorly causing the cutting surface of the reamer device to remove a desired amount of patellar cartilage and bone to accommodate a patellar component.Type: GrantFiled: October 18, 2006Date of Patent: July 20, 2010Assignee: Howmedica Osteonics Corp.Inventors: Sandeep K. Chauhan, Carlos E. Collazo, Jerry D'Alessio, II, Philip F. Williams, III
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Patent number: 7749276Abstract: A surgical kit includes an orthopaedic implant, an orthropaedic trial and a bone protector. All three components have bone-contacting surfaces sized and shaped to be placed against a resected bone surface. The orthopaedic implant and trial are thicker than the bone protector. The bone protector has a flat bearing surface while the implant and trial have curved articulating surfaces. In use, the bone protector is temporarily mounted on the resected bone surface to cover and protect the resected bone surface while other bones of the joint are resected. A retractor can be placed against the bone protector and used as a lever to move other bones of the joint for greater access during surgery. The bone protector serves as the fulcrum of the lever and protects the resected bone from damage. The kit, bone protector and method should be useful in minimally invasive total joint arthroplasty.Type: GrantFiled: January 21, 2005Date of Patent: July 6, 2010Assignee: Depuy Products, Inc.Inventor: Wolfgang Fitz
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Publication number: 20100125338Abstract: A surgical kit includes an orthopaedic implant, an orthropaedic trial and a bone protector. All three components have bone-contacting surfaces sized and shaped to be placed against a resected bone surface. The orthopaedic implant and trial are thicker than the bone protector. The bone protector has a flat bearing surface while the implant and trial have curved articulating surfaces. In use, the bone protector is temporarily mounted on the resected bone surface to cover and protect the resected bone surface while other bones of the joint are resected. A retractor can be placed against the bone protector and used as a lever to move other bones of the joint for greater access during surgery. The bone protector serves as the fulcrum of the lever and protects the resected bone from damage. The kit, bone protector and method should be useful in minimally invasive total joint arthroplasty.Type: ApplicationFiled: December 18, 2009Publication date: May 20, 2010Applicant: DEPUY PRODUCTS, INC.Inventor: WOLFGANG FITZ
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Publication number: 20100057211Abstract: A knee prosthesis assembly can comprise a patella prosthesis adapted to be secured to a natural patella portion having an anterior surface and a posterior surface. An articulating portion can have a posteriorly facing portion and an anteriorly facing portion. The posteriorly facing portion can have a spherical articular surface. A porous portion can have a first portion that engages the anteriorly facing portion and a second portion that engages the natural patella portion. A fastener can pass entirely through a passage formed at a centermost portion of the natural patella portion from the anterior surface to the posterior surface and into a bore defined in the centermost portion of the porous portion to securably engage the porous portion.Type: ApplicationFiled: September 3, 2008Publication date: March 4, 2010Applicant: Biomet Manufacturing Corp.Inventors: John M. Cuckler, Christopher Peters
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Publication number: 20090326660Abstract: A patello-femoral joint prosthesis is provided which allows smooth tracking of the articulating surfaces through a full range of joint motion. A novel configuration of a femoral implant component that facilitates superior adhesion to bone is also provided. Also provided is a patello-femoral joint replacement system, which permits precise, reproducible bone preparation techniques that uniquely permit later revision and full knee joint replacement procedures with minimal complications. Also provided are a drill guide and a cutting guide, each being configured to provide three point stabilization during operation.Type: ApplicationFiled: September 3, 2009Publication date: December 31, 2009Applicant: Biomet Manufacturing Corp.Inventor: Walter F. Abendschein
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Publication number: 20090265012Abstract: The present invention provides a method and device for restoring individual patient joint kinematic using minimally invasive surgical procedures. The instrumentation of the invention sculpts the articular surface of a first bone that normally articulates in a predetermined manner with a second bone. The implant system is comprised of implants that provide intraoperative surgical options for articular constraint and facilitate proper alignment and orientation of the joint to restore kinematics as defined by the individual patient anatomy.Type: ApplicationFiled: April 20, 2009Publication date: October 22, 2009Applicant: Alexandria Research Technologies, Inc.Inventors: Gerard A. Engh, Wesley D. Johnson
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Patent number: 7597713Abstract: An intervertebral implant including: a central axis, upper and lower terminal parts and a convex joint element. Each of the terminal parts come to rest against the end surfaces of two adjacent vertebras and opposite first and second concave inner surfaces, respectively. The convex joint element is situated between the terminal parts and rests in a sliding manner against the first and second concave inner surfaces of the two terminal parts. The, first concave surface is a partial surface of a first rotationally symmetrical external surface about the axis of rotation transverse to the central axis. The second concave inner surface of a second rotationally symmetrical conical external surface about the axis of rotation transverse to the central axis.Type: GrantFiled: September 2, 2002Date of Patent: October 6, 2009Assignee: Synthes USA, LLCInventors: Daniel Baumgartner, Adrian Burri, Claude Mathieu
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Patent number: 7544209Abstract: A patello-femoral prosthesis is provided for replacing the engagement surfaces between the patella and the femur. The prosthesis is configured to cover the trochlear groove and extend into the intercondylar notch without extending onto the articulating surfaces of the condyles. A method is also provided for implanting a patello-femoral prosthesis in which a portion of the trochlear groove and intercondylar notch are resected and the prosthesis is implanted over the femur that had portions resected.Type: GrantFiled: February 6, 2004Date of Patent: June 9, 2009Inventor: Paul A. Lotke