Tibial Stem Structure Patents (Class 623/20.34)
  • Patent number: 10568744
    Abstract: An implant system comprises an implant plate adapted to be positioned on a surface of a resected bone. The implant plate has a plurality of openings. A plurality of independently positionable pegs attach the implant plate to the bone. Each peg has a longitudinal axis and comprises: a peg body and a retaining device. The peg body is inserted into a peg hole in the bone. The peg body has a transverse dimension in a direction normal to the longitudinal axis, the transverse dimension larger than the openings of the plate. The retaining device is separate from the peg body, and is configured to attach to the peg body, with at least a first portion of the retaining device positioned above an upper surface of the implant plate, and a connecting portion of the retaining device extending through one of the openings of the implant plate.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: February 25, 2020
    Assignee: Wright Medical Technology, Inc.
    Inventors: Braham K. Dhillon, Daniel E. Free, Ramon Luna
  • Patent number: 10448958
    Abstract: A method of attaching prosthetic implants to bone, applicable to tibia, patella, acetabulum, glenoid, or femur, includes trimming an articular surface of the bone, leaving a trimmed surface. Holes are punched or drilled into the surface in a predetermined array before polymethyl methacrylate bone cement is used to attach the surface to the implant. In an embodiment, the holes are punched by placing a punch-plate with sharpened punch spikes on the surface, and striking the punch plate to drive punches into the trimmed surface. In another embodiment, holes are drilled using a drilling template with predrilled guidance holes placed on the surface of the bone. In another embodiment, holes are drilled by positioning a robotic drill over the trimmed surface; adjusting a drilling pattern of the robotic drill according to the trimmed surface; and using the robotic drill to drill holes of predetermined depth according to the drilling pattern.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: October 22, 2019
    Assignee: THE TRUSTEES OF DARTMOUTH COLLEGE
    Inventors: Douglas W. Van Citters, Bridget E. Shaia, Spencer H. Amundsen, James A. Yang
  • Patent number: 10335284
    Abstract: Disclosed herein are systems, methods, and devices for providing a tibial implant including an anatomic stem that provides a close interface between the implant and surrounding bone. The stem varies in size, cross-sectional shape, or orientation from a proximal portion of the stem to the tip of the stem. The variation of the stem accommodates the variation of tibial anatomy into which the implant component is implanted. The stem provides resistance against rotation of the implant and reduces stress shielding effects by transmitting forces into surrounding bone. In certain implementations, the interface between the stem and bone is supplemented by fin extensions that extend outward from the stem and increase the contact between the implant and the surrounding bone structure.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: July 2, 2019
    Assignee: SMITH & NEPHEW, INC.
    Inventors: Ryan L. Landon, Angela Mines, Ryan Dees
  • Patent number: 10265181
    Abstract: An orthopedic knee prosthesis is provided including a tibial baseplate component having a distal, bone-contacting surface with one or more fixation structures extending distally therefrom, in which the fixation structures are asymmetrically arranged within the baseplate periphery.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: April 23, 2019
    Assignee: Zimmer, Inc.
    Inventors: Mary S. S. Wentorf, Calie B. Grey, Shaun R. Cronin
  • Patent number: 10149767
    Abstract: 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.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: December 11, 2018
    Assignee: Biomet Manufacturing, LLC
    Inventors: Robert Metzger, Brian A. Uthgenannt, Kevin T. Stone
  • Patent number: 10136997
    Abstract: Methods, systems and apparatuses are disclosed including apparatuses that can be used in a total knee replacement procedure. According to one example, a tibial implant is disclosed. The tibial implant can be configured for attachment to a tibia in a knee arthroplasty and can include a baseplate having a lateral portion and a medial portion oriented relative to an anteroposterior axis and a fixation member. Each of the lateral portion and the medial portion can have a distal surface configured to interface with a resected proximal surface of a tibia. The fixation member can be coupled to and extend both distally and medially from the baseplate such that the fixation member is oriented at an acute angle relative to the distal surface of the medial portion.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: November 27, 2018
    Assignee: Zimmer, Inc.
    Inventor: Edward R. Yager
  • Patent number: 10039645
    Abstract: An orthopedic prosthesis assembly includes a first prosthetic component, a second prosthetic component, a retainer, and a fastener and allows the removal of the first prosthetic component without having to remove the second prosthetic component from an intramedullary canal of a patient's bone. The fastener is received in an aperture of the first prosthetic component and the retainer is configured to engage the aperture of the first prosthetic component such that a part of the fastener is secured within the aperture. A rod of the fastener is configured to advance along the longitudinal axis through the first prosthetic component into the second prosthetic component. The end of the rod of the fastener is threaded into a threaded bore defined in the second prosthetic component.
    Type: Grant
    Filed: January 25, 2016
    Date of Patent: August 7, 2018
    Assignee: DePuy Ireland Unlimited Company
    Inventors: Filip Leszko, Aaron Matyas, Kyle Steffe, David E. Rottger, Daniel M. Hippensteel
  • Patent number: 9931218
    Abstract: A method of implanting a prosthesis based on bone density of a bone is provided. A first bone density of the bone may be determined at a first portion of the bone. A second bone density of the bone may be determined at a second portion of the bone. A first desired amount of bone removal may be determined at the first portion of the bone based on the first bone density. A second desired amount of bone removal may be determined at the second portion of the bone based on the second bone density. The desired amounts of bone may be removed from the first and second portions of the bone. A prosthesis may be selected and implanted.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: April 3, 2018
    Assignee: Biomet Manufacturing, LLC
    Inventors: Brian M. May, Duke A. Fox, Joshua B. Catanzarite
  • Patent number: 9849000
    Abstract: A kit for use in performing joint arthroplasty on a head of a long bone is disclosed. The kit includes: a first implant including a first implant articulating surface and an opposed first implant mounting surface having a first implant location feature; and an instrument for preparing a cavity in the head of the long bone. The instrument includes a body and a punch extending from the body. The punch includes a portion thereof having a shape similar to the first implant location surface of the implant. A method for providing joint arthroplasty is also disclosed.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: December 26, 2017
    Assignee: DePuy Synthes Products, Inc.
    Inventors: Jack F. Long, Joseph P. Iannotti, Gerald R. Williams
  • Patent number: 9814584
    Abstract: 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.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: November 14, 2017
    Assignee: DEPUY IRELAND UNLIMITED COMPANY
    Inventors: Rusty T. Meier, Daren L. Deffenbaugh, Mark A. Heldreth, Stephen A. Hazebrouck
  • Patent number: 9788957
    Abstract: A system is provided which includes an articulating component, a post, a reception member and a bone engaging member. The articulating component includes an articulating surface and a second surface opposite the articulating surface. The post is disposed below the second surface. The reception member is configured to receive the post. The bone engaging member is configured to be embedded in a bone, wherein the bone engaging member is configured to receive the reception member. The reception member includes a reception member inside surface, wherein the reception member inside surface faces the post when the post is received by the reception member. A first portion of the reception member inside surface defines a tapered configuration and the reception member inside surface comprises at least one ratchet interface.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: October 17, 2017
    Assignees: Cleveland Clinic Foundation, Coorstek Medical LLC
    Inventor: Dinesh Koka
  • Patent number: 9737408
    Abstract: An orthopaedic surgical instrument includes a cup including an outer surface having an opening positioned on a component-engaging side and an inner wall extending from the opening of the outer surface to a back wall. The inner wall having a plurality of stepped surfaces facing the component-engaging side. Each of the plurality of stepped surfaces is sized to receive a platform of a tibial tray.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: August 22, 2017
    Assignee: DEPUY IRELAND UNLIMITED COMPANY
    Inventors: Filip Leszko, Jonathan C. Lee, Craig S. Tsukayama
  • Patent number: 9707008
    Abstract: An infection treatment system includes a first intramedullary rod for placement within an intramedullary canal and including a superior portion having a superior end, an inferior portion having an inferior end, and a shaft extending longitudinally between the superior and inferior portions. The shaft includes longitudinally extending channels. A second intramedullary rod for placement within an intramedullary canal includes a superior portion having a superior end, an inferior portion having an inferior end, and a shaft extending longitudinally between the superior and inferior portions. The shaft includes longitudinally extending channels. A coupler is operatively attached to the rods. The coupler has a superior face, an inferior face, an anterior face, a posterior face, a first lateral face and a second lateral face. At least one of the faces includes at least one opening in fluid communication with at least a portion of the channels of the first and second rods.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: July 18, 2017
    Assignee: The Cleveland Clinic Foundation
    Inventors: Viktor E. Krebs, Wael K. Barsoum, Bret E. Hartzell
  • Patent number: 9655729
    Abstract: An orthopedic 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.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: May 23, 2017
    Assignee: Zimmer, Inc.
    Inventors: Raymond C. Parisi, Abraham P Habegger
  • Patent number: 9597189
    Abstract: A prosthetic tibial component for a knee joint, said prosthetic tibial component comprising: a base construct for engaging the tibia; and a bearing construct for engaging the femoral side of the knee joint; said bearing construct being adjustably fixedly mountable to said base construct.
    Type: Grant
    Filed: April 26, 2013
    Date of Patent: March 21, 2017
    Assignee: Consensus Orthopedics, Inc.
    Inventors: Brian James Katerberg, Curt Wiedenhoefer, Justin Anthony Creel, James Anton Santangelo
  • Patent number: 9381090
    Abstract: An orthopaedic tibial prosthesis includes a tibial baseplate with features designed for use with small-stature knee-replacement patients. The tibial prosthesis may include a shortened tibial keel, tibial keel fins which define a large angle with respect to a longitudinal axis of the keel, and/or tibial keel fins which extend along less than the entire longitudinal extent of the keel.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: July 5, 2016
    Assignee: ZIMMER, INC.
    Inventors: Mary S. S. Wentorf, Calie B. Grey, Shaun R. Cronin, Scott E. Dykema
  • Patent number: 9301857
    Abstract: An orthopaedic surgical instrument and method includes securing an anchor to a tibial prosthetic component implanted in a proximal end of a patient's tibia, moving a separator posteriorly toward the anchor to position a tip of the separator between a lower side of the tibial tray and an upper end of the tibial sleeve, advancing the separator from anterior to posterior between the lower side of the tibial tray and the upper end of the tibial sleeve to detach the tibial tray from the tibial sleeve, and removing the tibial tray from the proximal end of the patient's tibia. The tibial prosthetic component includes a tibial tray and a tibial sleeve secured to the tibial tray.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: April 5, 2016
    Assignee: DEPUY (IRELAND)
    Inventors: Aaron J. Matyas, Stephen Bennett, Kyle D. Steffe
  • Patent number: 9295557
    Abstract: 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.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: March 29, 2016
    Assignee: Zimmer, Inc.
    Inventors: Mary S. S. Wentorf, Jeffrey E. Bischoff, Adam H. Sanford, Robert Hodorek
  • Patent number: 9144495
    Abstract: A stack-up assembly for tibial insert trial is provided. The stack-up assembly for tibial insert trial is inserted between a femoral component and a tibial component of an artificial knee joint. The stack-up assembly for tibial insert trial includes an insert trial body and a plurality of first augments. The insert body is operatively connected with the femoral component. The first augments are stacked between the tibial component and the insert trial body.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: September 29, 2015
    Assignee: UNITED ORTHOPEDIC CORP.
    Inventors: Yan-Shen Lin, Ren-Hong Huang, Huang-Hsing Liu
  • Patent number: 9107756
    Abstract: A family of tibial baseplates can comprise a plurality of tibial baseplates. Each of the plurality of tibial baseplates can define a common nominal baseplate size and a unique, non-congruent tibial baseplate periphery as compared to the other tibial baseplates of the family of tibial baseplates.
    Type: Grant
    Filed: February 6, 2013
    Date of Patent: August 18, 2015
    Assignee: Zimmer, Inc.
    Inventor: Mary S. S. Wentorf
  • Patent number: 8998996
    Abstract: A modular knee prosthesis system includes a femoral component having a stem and a sleeve. The system is modular, and provides the surgeon with the option of distally offsetting the joint line by controlling the relative axial positions of the stem and the sleeve. Alternative options include providing sleeves with tapered bores of different diameters, providing a shim to be placed between the sleeve and the stem and providing the stems as adapters having different diameters.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: April 7, 2015
    Assignee: Depuy (Ireland)
    Inventors: Peter J James, Richard E Jones, Benjamin J Sordelet, Timothy G Vendrely, Stephanie M Wainscott
  • Publication number: 20150073562
    Abstract: Disclosed herein are systems, methods, and devices for providing a tibial implant including an anatomic stem that provides a close interface between the implant and surrounding bone. The stem varies in size, cross-sectional shape, or orientation from a proximal portion of the stem to the tip of the stem. The variation of the stem accommodates the variation of tibial anatomy into which the implant component is implanted. The stem provides resistance against rotation of the implant and reduces stress shielding effects by transmitting forces into surrounding bone. In certain implementations, the interface between the stem and bone is supplemented by fin extensions that extend outward from the stem and increase the contact between the implant and the surrounding bone structure.
    Type: Application
    Filed: March 15, 2013
    Publication date: March 12, 2015
    Applicant: SMITH & NEPHEW, INC.
    Inventors: Ryan L. Landon, Angela Mines, Ryan Dees
  • Patent number: 8932364
    Abstract: Disclosed herein are systems and methods for filling bone voids which may be present at the time of surgery. The systems disclosed herein generally include a baseplate component, a spacer component, and void filler component. The spacer component is generally assembled to the baseplate component with a taper or press-fit, for example, in one of a plurality of selected axial positions. The void filler component is then generally assembled to the spacer component in one of a plurality of selected axial positions. The void filler component preferably has an outer surface with portions having varying diameters such that the outer surface thereof can be received within a canal of a bone and contact the bone forming the canal at different locations in order to aid in stabilizing the assembled components in the canal.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: January 13, 2015
    Assignee: Howmedica Osteonics Corp.
    Inventors: Mark Mooradian, Jeffery Arnett, Joshua A. Butters
  • Patent number: 8906106
    Abstract: The invention concerns a tibial prosthetic component comprising a plate (100) for forming a tibial plateau of a tibia (16), wherein a peripheral region of the plate (100) has a thickness of less than 3 mm. The invention also concerns a tibial prosthetic component having a keel of depth less than 9 mm. The invention also concerns a method of selecting a tibial prosthetic component comprising receiving measurements of at least one physical attribute of an individual into whom the tibial prosthetic component is to be implanted, selecting a thickness of a plate (100) and depth of keel of the tibial prosthetic component based on the measurements and providing a tibial prosthetic component comprising a plate (100) having the selected thickness and a keel having the selected depth.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: December 9, 2014
    Inventors: John O'Connor, Chris Dodd, David Murray, Colin Hunsley
  • Patent number: 8906104
    Abstract: A method of assembling a knee joint prosthesis for replacing a portion of a knee joint. The method includes rotatably coupling a post to an extension portion of an insert extending from a bearing member, and coupling a femoral component for articulation on the bearing member.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: December 9, 2014
    Assignee: Biomet Manufacturing, LLC
    Inventor: Nathan E. Belcher
  • Patent number: 8900316
    Abstract: Certain embodiments generally provide an improved tibial base member comprising keel portions that allow one or both cruciate ligaments to be preserved. Other embodiments provide improved lateral and/or medial inserts having a mesial lip that helps relieve and/or prevent impingement between the femoral component and the tibial eminence. Other embodiments provide improved femoral components having various chamfers to provide additional clearance with respect to the tibial eminence and posterior cruciate ligament without decreasing bone coverage.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: December 2, 2014
    Assignee: Smith & Nephew, Inc.
    Inventors: Nathaniel M. Lenz, Richard Michael Smith, Zachary Christopher Wilkinson, Brian W. McKinnon, Abraham B. Salehi, Jonathan Kirk Nielsen, Michael D. Ries, Gerald J. Jerry
  • Patent number: 8900317
    Abstract: A tibial support structure includes a platform portion and a medullary portion that are monolithically formed as a single piece. The medullary and platform portions of the augment component are adapted to accommodate and mechanically attach to a tibial baseplate, and are individually shaped and sized to replace damaged bone stock both within the tibia, as well at the tibial proximal surface. The monolithic formation of the tibial support structure provides a strong and stable foundation for a tibial baseplate and facilitates restoration of the anatomic joint line, even where substantial resections of the proximal tibia have been made. The tibial support structure may be made of a bone-ingrowth material which facilitates preservation and rebuilding of the proximal tibia after implantation, while also preserving the restored joint line by allowing revision surgeries to be performed without removal of the tibial support structure.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: December 2, 2014
    Assignee: Zimmer, Inc.
    Inventors: Ray Zubok, Jorge Montoya, Timothy A. Hoeman, John Chernosky, Keith A. Roby
  • Publication number: 20140330389
    Abstract: An improved implant having components comprising an oxidized zirconium bearing surface adapted to decrease pain, lower friction, and minimize wear when coupled with natural femoral articular cartilage. The improved implant components also provide for reduced backside wear effects in fixed and mobile implants. The improved implant components further provide for more ideal wear coupling between components in mobile bearing implants.
    Type: Application
    Filed: May 18, 2011
    Publication date: November 6, 2014
    Applicant: Smith & Nephew, Inc.
    Inventors: Jason Sean Jordan, Vivek Devidas Pawar, Mark Ellsworth Nadzadi
  • Publication number: 20140324180
    Abstract: An orthopedic prosthesis includes a tibial implant and a tibial insert. The tibial implant includes an upper surface, a medial side, a lateral side and a first locking structure provided on the upper surface where the medial side and the lateral side of the tibial implant are defined by a medial-lateral midline. The tibial insert includes a second locking structure provided on its bottom surface. The first and second locking structures are configured for engaging each other along an engagement direction vector when the tibial insert is inserted into the tibial base towards the posterior side. The engagement direction vector is angled away from the medial-lateral midline of the tibial implant towards the medial side of the tibial implant by a predetermine angle.
    Type: Application
    Filed: July 11, 2014
    Publication date: October 30, 2014
    Inventors: Vernon R. Hartdegen, David Robert Tuttle, John Michael Green, II
  • Publication number: 20140277534
    Abstract: 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.
    Type: Application
    Filed: February 25, 2014
    Publication date: September 18, 2014
    Inventor: Ray C. Wasielewski
  • Publication number: 20140277536
    Abstract: A knee prosthesis for use during performance of a knee replacement procedure includes a plurality of stem components in a range of various sizes, a plurality of femoral components in a range of various sizes, and a plurality of tibial trays in a range of various sizes. Each of the stem components is compatible with each of the femoral components and the tibal trays. Some of the stem components have a single slot formed therein, with other stem components having a pair of slots formed therein.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Inventor: Filip Leszko
  • Publication number: 20140277547
    Abstract: An orthopaedic prosthesis for cementless fixation has a solid metal base and porous metal pegs extending out from the base. The pegs are mechanically, rather than metallurgically, fixed to the base. A process for making such a prosthesis is also disclosed.
    Type: Application
    Filed: February 21, 2014
    Publication date: September 18, 2014
    Applicant: Depuy Synthes Products, LLC
    Inventors: JEFFREY A RYBOLT, BRYAN J SMITH
  • Publication number: 20140277548
    Abstract: An implant providing for both short and long term stability and fixation is disclosed. The implant includes a plurality of projections extending from a bone contacting surface, and a porous material covering at least portions of the surface and projections. The orientation of the projections and the porous material provide for the stability and fixation. Methods of forming and utilizing the implant are also disclosed.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: MAKO SURGICAL CORP.
    Inventors: Robert Craig Cohen, Philip Harris Frank
  • Publication number: 20140257507
    Abstract: A method for removing a stem portion of an orthopedic implant from a bone comprises exposing an implanted orthopedic implant having a body portion, a stem portion interconnected to the body and a porous metal section forming an interconnection between the body and the stem portion. A cutting tool is mounted on a holder connected to an exposed surface of the orthopedic implant. The porous section is aligned with the cutting tool mounted on the holder. The entire porous section is cut by moving the cutting tool therethrough in a direction transverse to the stem portion axis. The implant body portion is then removed and then the stem portion is removed from the bone. The cutting tool may be a saw or chisel which may be mounted on a guide fixed to the body portion.
    Type: Application
    Filed: March 7, 2013
    Publication date: September 11, 2014
    Applicant: HOWMEDICA OSTEONICS CORP.
    Inventors: Aiguo Wang, Matthew P. Poggie, Nicholas Nai Guang Dong
  • Publication number: 20140249641
    Abstract: An orthopaedic knee prosthesis is provided including a tibial baseplate component having a distal, bone-contacting surface with one or more fixation structures extending distally therefrom, in which the fixation structures are asymmetrically arranged within the baseplate periphery.
    Type: Application
    Filed: May 15, 2014
    Publication date: September 4, 2014
    Applicant: Zimmer, Inc.
    Inventors: Mary S.S. Wentorf, Calie B. Grey, Shaun R. Cronin
  • Patent number: 8808388
    Abstract: 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.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: August 19, 2014
    Assignee: Smith & Nephew, Inc.
    Inventors: Brian William McKinnon, Nathaniel Milton Lenz, Scott Kennedy Laster, Michael D. Ries, Steven B. Haas
  • Publication number: 20140222157
    Abstract: Various embodiments of methods for obtaining kinematic information regarding a joint, including information regarding the joint in a weight-bearing position, are disclosed, as well as methods of designing implants, instruments, and surgical repair systems based on the kinematic information.
    Type: Application
    Filed: January 30, 2014
    Publication date: August 7, 2014
    Applicant: CONFORMIS, INC.
    Inventors: Ghaith Al Hares, Klaus Radermacher
  • Publication number: 20140222156
    Abstract: A cementless orthopedic implant is disclosed. More specifically, but not necessarily entirely, a cementless tibial implant used as a component of a knee joint is disclosed. The tibial component may comprise a tibial tray and stem. The tibial component may be a monoblock design used for both primary and revision surgeries. The stem of the tibial component may comprise a plurality of protruding steps that assist in providing primary fixation and stability without the use of screws or cement. The stem of the tibial component may further comprise a first and second stepped wing portions.
    Type: Application
    Filed: September 24, 2013
    Publication date: August 7, 2014
    Inventor: Russell Nevins
  • Patent number: 8790402
    Abstract: An orthopaedic implant for filling voids in bones, and methods of using the same. The orthopaedic implant comprises an open porous metal component, having pores for promoting bone regeneration, and a resorbable bone growth promoting component which is resorbed into new bone. The orthopaedic implant and methods of the present disclosure provide structural support for the bone as well as osteoconductive and/or osteoinductive matrix for promoting bone re-growth within bone void. Advantageously, the orthopaedic implants and methods disclosed herein are useful in filling critically sized bone voids.
    Type: Grant
    Filed: January 8, 2013
    Date of Patent: July 29, 2014
    Assignee: Zimmer, Inc.
    Inventors: Matthew E. Monaghan, Timothy A. Hoeman
  • Patent number: 8784490
    Abstract: The present disclosure is directed to orthopedic implants and methods of rapid manufacturing orthopedic implants using in vivo data specific to an orthopedic implant or orthopedic trial. Specifically, the instant disclosure utilizes permanent orthopedic implants and orthopedic trials (collectively, “implants”) outfitted with kinematic sensors to provide feedback regarding the kinematics of the trial or implant to discern which implant is preferable, and thereafter rapid manufacturing the implant.
    Type: Grant
    Filed: May 17, 2011
    Date of Patent: July 22, 2014
    Inventor: Ray C. Wasielewski
  • Publication number: 20140200674
    Abstract: A knee replacement system for enabling natural knee movement in a leg comprising a prosthetic is provided. The prosthetic includes a tibial portion at least partially implantable on a resected surface of a tibia; a plate portion attached to the tibial portion and at least partially implantable in a meniscal space; wherein the plate portion comprises a top surface having a medial recess and a lateral recess and a bottom surface attached to a top surface of the tibial portion wherein the tibial portion and the plate portion are one piece, wherein a medial side surface, a lateral side surface, a posterior side surface and an anterior side surface are attached to at least a portion of the top surface and at least a portion of the bottom surface and defining a medial side edge, a lateral side edge, a posterior side edge and an anterior side edge respectively, where in at least a portion of one of the medial side edge, lateral side edge, posterior side edge, and anterior side edge is oblique.
    Type: Application
    Filed: March 17, 2014
    Publication date: July 17, 2014
    Inventor: KRISHNACHANDRA CHANDRASHANKER MEHTA
  • Patent number: 8771364
    Abstract: A knee joint prosthesis can include a tibial component that can have a tibial tray. The tibial tray can include a platform-like tray that defines a superior surface and an inferior surface. The platform-like tray can have a tray perimeter and a raised wall formed on the inferior surface. The raised wall can be offset inboard relative to the tray perimeter. Porous material can be disposed on the inferior surface of the platform-like tray at a location generally between the raised wall and the tray perimeter.
    Type: Grant
    Filed: October 17, 2008
    Date of Patent: July 8, 2014
    Assignee: Biomet Manufacturing, LLC
    Inventors: Brian M. May, Mukesh Kumar
  • Patent number: 8764839
    Abstract: A tibial insert includes a platform defining an upper bearing surface and a bottom surface. A keel of the tibial insert is coupled to the bottom surface of the platform and includes a bore extending along a width of the keel. The bore is formed to receive a fastener therein.
    Type: Grant
    Filed: June 22, 2006
    Date of Patent: July 1, 2014
    Assignee: DePuy Synthes Products, LLC
    Inventors: James Matthew Rhodes, Jordan Soonja Lee
  • Patent number: 8758444
    Abstract: An orthopaedic knee prosthesis is provided including a tibial baseplate component having a distal, bone-contacting surface with one or more fixation structures extending distally therefrom, in which the fixation structures are asymmetrically arranged within the baseplate periphery.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: June 24, 2014
    Assignee: Zimmer, Inc.
    Inventors: Mary S. S. Wentorf, Calie B. Grey, Shaun R. Cronin
  • Publication number: 20140156017
    Abstract: A tibial anchoring assembly comprising a tibial tray and an anchor. The tibial tray comprises an upper surface for engagement with a femoral component and a lower surface for engagement with a tibia bone. The lower surface defines at least one retaining aperture. The anchor is adapted to compressively couple the tibial tray to the tibia bone. The anchor comprises a longitudinally extending base, a top section coupled to the base and having a shape to be received into the retaining aperture of the tibial tray, and a flexible blade member protruding from the base. The flexible blade member is adapted to be flexed in tension while being inserted into the tibia bone, thereby exerting a compressive force between the tibial tray and the tibia bone. A deforming fixture may be used to shape the flexible blade member. Methods of affixing an implant to a bone structure are also provided.
    Type: Application
    Filed: December 5, 2012
    Publication date: June 5, 2014
    Applicant: BIOMET MANUFACTURING CORP.
    Inventor: Brian Salyer
  • Patent number: 8740985
    Abstract: 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.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: June 3, 2014
    Assignee: Smith & Nephew, Inc.
    Inventor: Nathaniel Milton Lenz
  • Patent number: 8721729
    Abstract: A connecting device of joint prosthesis includes a stem means provided for being inserted into a medullary cavity of a bone, a receiving means provided for receiving a bone structure near the bone, an offset connecting means connected between the stem means and the receiving means, and an inserting member. The offset connecting means includes a first connecting component and a second connecting component. The inserting member inserts into an inserting bore of the first connecting component and an inserting recess of the second connecting component to make the first connecting component being fixed and positioned at the second connecting component, wherein there is an offset distance between the longitudinal central axis of the first connecting component and the longitudinal central axis of the second connecting component. Thereby the connecting device of joint prosthesis is adjustable for fitting individual patients with more effect in regard of the musculoskeletal mechanics.
    Type: Grant
    Filed: January 21, 2013
    Date of Patent: May 13, 2014
    Inventor: Cheng-Kuang Lu
  • Patent number: 8721731
    Abstract: Systems and methods for providing deeper knee flexion capabilities, more physiologic load bearing and improved patellar tracking for knee prosthesis patients. Such systems and methods include a tibial component for replacing at least part of a proximal portion of a tibia. In some cases, the tibial component includes an articulation feature that forms a projection that projects from a posterior portion of at least one of a medial articulation surface and a lateral articulation surface of the tibial component. In some cases, the articulation feature is contained within an area of the tibial component that is selected from a lateral portion which is lateral to a medial-most portion of an intercondylar surface, and a medial portion, which is medial to a lateral-most portion of the intercondylar surface, and wherein the intercondylar surface is disposed on an object selected from the tibial component and the proximal portion of the tibia.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: May 13, 2014
    Inventors: Kent M. Samuelson, Connor E. Samuelson
  • Patent number: 8721733
    Abstract: A modular prosthesis kit includes a sleeve. The sleeve has a central portion and a fin. At least part of the central portion includes a plurality of adjacent terraces. The fin includes a pair of tapered outer surfaces that are continuous, non-terraced and define a wedge-shape to stabilize the position of the sleeve when implanted. The sleeve may include a single terraced spout or wing with such a fin or may not have any spouts or wings extending out from the central portion. The kit may also include sleeves with two spouts or wings extending out from the central portion.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: May 13, 2014
    Assignee: Depuy (Ireland)
    Inventor: John A Bonitati
  • Patent number: 8715363
    Abstract: A surgical instrument including at least one tibial phantom generally corresponding to at least certain features of the tibial implant. The tibial phantom includes a top surface adapted to move freely against the prepared bottom end of the tibia. At least one talus phantom generally corresponding to at least certain features of the talus implant is engaged with the prepared top surface of the talus. At least one phantom skid is located between the tibial phantom and the talus phantom. The phantom skid is engaged with the tibial phantom such that dynamic engagement between the phantom skid and the talus phantom through at least extension and flexion of the ankle joint positions the tibial phantom on the prepared bottom end of the tibia. The phantom skid can either be a part of the tibial phantom or a separate component.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: May 6, 2014
    Assignee: Tornier SAS
    Inventors: Yves-Alain Ratron, Jean-Emmanuel Cardon, Thierry Judet, Jean-Alain Colombier, Michel Bonnin