Meniscus Patents (Class 623/14.12)
  • Patent number: 8366771
    Abstract: Disclosed herein are tools for repairing articular surfaces repair materials and for repairing an articular surface. The surgical tools are designed to be customizable or highly selectable by patient to increase the speed, accuracy and simplicity of performing total or partial arthroplasty.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: February 5, 2013
    Assignee: ConforMIS, Inc.
    Inventors: Albert G. Burdulis, Jr., Wolfgang Fitz, Rene Vargas-Voracek, Philipp Lang, Daniel Steines, Konstantinos Tsougarakis
  • Publication number: 20130030528
    Abstract: The invention is directed towards a process for implanting a cartilage graft into a cartilage defect and sealing the implanted cartilage graft with recipient tissue. The invention is also directed towards a process for repairing a cartilage defect and implanting a cartilage graft into a human or animal. The invention is further directed toward a repaired cartilage defect.
    Type: Application
    Filed: June 29, 2012
    Publication date: January 31, 2013
    Applicant: LIFENET HEALTH
    Inventors: Silvia S. Chen, Xiaofei Qin, Jingson Chen, Lloyd Wolfinbarger, JR.
  • Patent number: 8361147
    Abstract: A prosthetic device for use as an artificial meniscus is disclosed. The prosthetic device restores shock absorption, stability, and function to the knee joint after removal of the damaged natural meniscus. In some embodiments, the prosthetic device includes an anti-migration feature. The anti-migration feature is a bridge for engagement with a femur notch in some instances. Generally, the anti-migration feature allows the artificial meniscus to be implanted into the patient's knee and maintain its position within the knee without penetrating the adjacent bone. The bridge is reinforced with fibers in some instances.
    Type: Grant
    Filed: April 9, 2008
    Date of Patent: January 29, 2013
    Assignee: Active Implants Corporation
    Inventors: Avraham Shterling, Gal Zur, Eran Linder-Ganz, Noam Weissberg
  • Publication number: 20130023989
    Abstract: A prosthetic device that may be utilized as an artificial meniscus is disclosed. The prosthetic device can restore shock absorption, stability, and function to the knee after the damaged natural meniscus is removed and replaced with the prosthetic device. In some embodiments, the meniscus includes an integral fixation anchor and additional features that minimize the requirement for modification of the implant for proper fit during surgery.
    Type: Application
    Filed: May 25, 2012
    Publication date: January 24, 2013
    Applicant: ACTIVE IMPLANTS CORPORATION
    Inventor: Howard Fox
  • Patent number: 8357203
    Abstract: Devices and treatments for various joint conditions include a resilient elongate orthopedic device inserted into a joint space using a suture. The suture is passed through the joint space and used to pull the orthopedic device into the joint space. The suture may be using a percutaneously inserted needle or other type of needle-based delivery instrument. The resilient elongate orthopedic device may be restrained to a reduced profile that permits minimally invasive implantation, but assume an enlarged profile when positioned at an implantation site.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: January 22, 2013
    Assignee: Articulinx, Inc.
    Inventors: David White, Janine Robinson, Michael Hogendijk
  • Publication number: 20130018464
    Abstract: Disclosed herein are methods, compositions and tools for repairing articular surfaces repair materials and for repairing an articular surface. The articular surface repairs are customizable or highly selectable by patient and geared toward providing optimal fit and function. The surgical tools are designed to be customizable or highly selectable by patient to increase the speed, accuracy and simplicity of performing total or partial arthroplasty.
    Type: Application
    Filed: September 24, 2012
    Publication date: January 17, 2013
    Applicant: CONFORMIS, INC.
    Inventor: ConforMIS, Inc.
  • Patent number: 8354119
    Abstract: A resorbable extracelluar matrix for reconstruction of cartilage tissue includes a mixture of collagen I and collagen II in a respective ratio of from about 1:19 to 19:1. The matrix can be utilized as a scaffold implant for vertebral or meniscal cartilage regeneration.
    Type: Grant
    Filed: November 19, 2002
    Date of Patent: January 15, 2013
    Assignee: ED. Geistlich Soehne AG Fuer Chemische Industrie
    Inventors: Peter Geistlich, Lothar Schloesser
  • Publication number: 20130013066
    Abstract: Various methods for treating a joint are disclosed herein. According to one method, a joint is surgically treated by performing a surgical repair treatment on tissue within the joint capsule; implanting a load reducing device at the joint and entirely outside of the joint capsule to reduce load transmitted by the treated tissue to allow for the tissue within the joint capsule to heal; and partially unloading the joint during healing of the surgical repair site.
    Type: Application
    Filed: June 13, 2012
    Publication date: January 10, 2013
    Applicant: Moximed, Inc.
    Inventors: Michael E. Landry, Anton G. Clifford, Anthony J. Robins, David Lowe, Stefan M. Gabriel
  • Publication number: 20130013067
    Abstract: Various methods for treating a joint are disclosed herein. According to one method, a joint is surgically treated by performing a surgical repair treatment on tissue within the joint capsule; implanting a load reducing device at the joint and entirely outside of the joint capsule to reduce load transmitted by the treated tissue to allow for the tissue within the joint capsule to heal; and partially unloading the joint during healing of the surgical repair site.
    Type: Application
    Filed: June 13, 2012
    Publication date: January 10, 2013
    Applicant: MOXIMED, INC.
    Inventors: Michael E. Landry, Anton G. Clifford, Joshua Makower
  • Publication number: 20120310347
    Abstract: Methods of selecting and implanting prosthetic devices for use as a replacement meniscus are disclosed. The selection methods include a pre-implantation selection method and a during-implantation selection method. The pre-implantation selection method includes a direct geometrical matching process, a correlation parameters-based matching process, and a finite element-based matching process. The implant identified by the pre-implantation selection method is then confirmed to be a suitable implant in the during-implantation selection method. In some instances, the during-implantation selection method includes monitoring loads and/or pressures applied to the prosthetic device and/or the adjacent anatomy. In some instances, the loads and/or pressures are monitored by a trial prosthetic device comprising one or more sensors. Methods of implanting meniscus prosthetic devices are also disclosed.
    Type: Application
    Filed: July 18, 2012
    Publication date: December 6, 2012
    Applicant: Active Implants Corporation
    Inventors: Eran Linder-Ganz, Jonathan Elsner, Avraham Shterling
  • Patent number: 8323642
    Abstract: The present invention provides a method of using locally administered collagenase as a non-invasive means of enhancing cell release from the cartilage or fibrocartilage tissues adjacent to a disease or injury site. The subsequent migration of cells from these tissues into the lesion or wound, followed by deposition of the appropriate extracellular matrix, results in closure of the lesion or fusion of a tissue gap.
    Type: Grant
    Filed: December 13, 2006
    Date of Patent: December 4, 2012
    Assignee: DePuy Mitek, Inc.
    Inventors: Brooks J. Story, Ed Yiling Lu, Donna Torres
  • Publication number: 20120303122
    Abstract: A prosthetic implant comprises an articular surface and a bone contacting surface. The articular surface has a first concavity extending along a first curved axis and the bone contacting surface has a convexity extending along a second curved axis. Geometric relationships between the concavity of the articular surface and convexity of the bone contacting surface are described. A resulting feature of this implant is a bone contacting surface including both planar and non-planar geometries. Instrumentation and a method for the preparation of the non-planar bone surface are also described.
    Type: Application
    Filed: May 27, 2011
    Publication date: November 29, 2012
    Applicant: HOWMEDICA OSTEONICS CORP.
    Inventor: Damon J. Servidio
  • Publication number: 20120290088
    Abstract: A device for intraoperative use in balancing joint forces and verifying the placement of the tibial component in total knee arthroplasty includes a spacer defining an enclosure; the spacer is sized to engage a top portion of the tibial component. A sensor array is embedded in the spacer, the sensor array measures forces on the spacer. A wireless transceiver is embedded in the spacer and forwards the output to a processor. The processor is analyzes the output and creates a pressure distribution graph indicative of the forces on the spacer, thereby assisting a surgeon in performing selective soft tissue release or component positioning in connection with surgical implantation of an orthopedic knee prosthesis.
    Type: Application
    Filed: June 5, 2012
    Publication date: November 15, 2012
    Applicant: THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS
    Inventors: Farid Amirouche, Mark H. Gonzalez
  • Publication number: 20120271417
    Abstract: An implant comprising a first, second, and third segment wherein the second and third segments partially overlap the first segment and define a load bearing surface comprising an anterior-posterior (AP) curvature including at least two tangential curves of the portion of the articular surface of the femoral condyle, the tangential curves having different radii of curvature. A drill guide comprises a body portion including a first, second and third bushing spaced along the body portion to establish a first, second and third axes, respectively. Each axis may be substantially normal to the articular surface at three different points along a curvature of the articular surface comprising the two tangential curves. A measuring device comprises a housing defining a longitudinally passageway and an outrigger. A guide pin may be received in the longitudinal passageway and a measuring device determines how far the guide pin is in the passageway.
    Type: Application
    Filed: May 14, 2012
    Publication date: October 25, 2012
    Applicant: ArthroSurface Incorporated
    Inventor: Steven W. Ek
  • Patent number: 8292954
    Abstract: Methods and apparatuses for treatment of various joint conditions include a device inserted into a joint space. During delivery, the profile of the device is constrained in at least one dimension to minimize invasive impact on tissue and/or bone. The device may be restrained for implantation by a thread or a rigid elongate member. After insertion, the device may expand at the implantation site.
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: October 23, 2012
    Assignee: Articulinx, Inc.
    Inventors: Janine Robinson, Michael Hogendijk
  • Patent number: 8292955
    Abstract: Methods and apparatuses for treatment of various joint conditions include a device inserted into a joint space. During delivery, the profile of the device is constrained in at least one dimension to minimize invasive impact on tissue and/or bone. The device may be restrained for implantation by a thread or a rigid elongate member. After insertion, the device may expand at the implantation site.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: October 23, 2012
    Assignee: Articulinx, Inc.
    Inventors: Janine Robinson, Michael Hogendijk
  • Publication number: 20120265300
    Abstract: Provided are materials comprising layers of anisotropically aligned fibers, the alignment of which fibers may be adjusted so as to give rise to circumferentially-aligned fibers that replicate the fiber alignment of native fibrous tissue, such as the meniscus or the annulus fibrosis. Also provided are laminates formed from the disclosed materials, as well as methods of fabricating the disclosed materials and laminates.
    Type: Application
    Filed: March 16, 2012
    Publication date: October 18, 2012
    Applicant: THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA
    Inventors: Robert L. Mauck, Matthew B. Fisher, Brendon M. Baker, Amy M. Silverstein, Jason Alan Burdick
  • Patent number: 8287594
    Abstract: A medical device and methods to relieve joint pain and adapted for knee joint repair, replacement and augmentation. The invention discloses joint lubricant, particularly hyaluronate compositions and methods for treatment of osteoarthritis.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: October 16, 2012
    Assignee: Intersect Partners, LLC
    Inventors: Andrew H. Cragg, Richard J. Greff, George Wallace, Robert J. Socci, Jr., Jonathan Kagan, Rodolfo C. Quijano, Hosheng Tu
  • Publication number: 20120239146
    Abstract: The present invention is directed to compositions having at least one neocartilage particle, juvenile cartilage particle or a combination thereof and a matrix, and methods and devices that include the compositions.
    Type: Application
    Filed: December 15, 2011
    Publication date: September 20, 2012
    Applicants: ZIMMER, INC., ISTO TECHOLOGIES, INC.
    Inventors: Neil Kizer, Robert Spiro, Jian Yao, Cheryl Renee Blanchard
  • Publication number: 20120232657
    Abstract: An arthroplasty device is provided having an interpenetrating polymer network (IPN) hydrogel that is strain-hardened by swelling and adapted to be held in place in a joint by conforming to a bone geometry. The strain-hardened IPN hydrogel is based on two different networks: (1) a non-silicone network of preformed hydrophilic non-ionic telechelic macromonomers chemically cross-linked by polymerization of its end-groups, and (2) a non-silicone network of ionizable monomers. The second network was polymerized and chemically cross-linked in the presence of the first network and has formed physical cross-links with the first network. Within the IPN, the degree of chemical cross-linking in the second network is less than in the first network. An aqueous salt solution (neutral pH) is used to ionize and swell the second network. The swelling of the second network is constrained by the first network resulting in an increase in effective physical cross-links within the IPN.
    Type: Application
    Filed: March 12, 2012
    Publication date: September 13, 2012
    Inventors: David Myung, Lampros Kourtis, Laura Hartmann, Curtis W. Frank, Stuart B. Goodman, Dennis R. Carter
  • Publication number: 20120232656
    Abstract: A method and apparatus for replacing damaged meniscal tissue includes a meniscus implant including a porous body having a plurality of interconnected open micro-pores and one or more open cavities for receiving meniscal tissue. The interconnected micro-pores are arranged to allow fluid to flow into the porous body and are in fluid communication with the one or more open cavities.
    Type: Application
    Filed: February 15, 2012
    Publication date: September 13, 2012
    Inventors: Philippe Gedet, Beat Lechmann, Nicolas Bouduban
  • Patent number: 8246688
    Abstract: In a knee endoprosthesis comprising a tibia part, a femur part having two condylar surfaces, and a meniscus part arranged between the femur part and the tibia part, the meniscus part having on its upper side two bearing shells for receiving and mounting the condylar surfaces of the femur part and having on its underside a meniscus-bearing surface which rests in a displaceable manner on a tibia-bearing surface on the upper side of the tibia part, in order to allow as large a bending angle as possible, with best possible adaptation to the anatomy of the natural knee joint, it is proposed that the meniscus-bearing surface and the tibia-bearing surface each have a spherical projection or a spherical recess offset in a medial or a lateral direction in relation to their center, that the spherical projection on one of the two bearing surfaces engage the spherical recess of the other bearing surface and thereby form a ball bearing-like mounting of the meniscus part on the tibia part, and that in the lateral or medial
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: August 21, 2012
    Assignee: Aesculap AG
    Inventor: Thomas Hagen
  • Publication number: 20120209382
    Abstract: An implantable medical device for implantation in a mammal joint having at least two contacting surfaces is provided. The medical device comprises; an artificial contacting surface adapted to replace at least the surface of at least one of the mammal's joint contacting surfaces, wherein the artificial contacting surface is adapted to be lubricated, when implanted in said joint. Furthermore the medical device comprises at least one inlet adapted to receive a lubricating fluid from a reservoir, at least one channel at least partly integrated in the artificial contacting surface in connection with the at least one inlet for distributing the lubricating fluid to the surface of the artificial contacting surface. The medical device could be adapted to be operable by an operation device to receive the distributed lubricated fluid from a reservoir.
    Type: Application
    Filed: July 12, 2010
    Publication date: August 16, 2012
    Applicant: MILUX HOLDING SA
    Inventor: Peter Forsell
  • Publication number: 20120207718
    Abstract: An articular cartilage shell graft is designed to treat the arthritic population for which current biologic treatments are insufficient and as a biological-stage repair for intervention before prosthetic knee arthroplasty.
    Type: Application
    Filed: February 15, 2012
    Publication date: August 16, 2012
    Inventors: KEVIN R. STONE, THOMAS J. TUREK
  • Publication number: 20120203343
    Abstract: Methods of utilizing implant devices for the repair of articular cartilage defects are provided herein. The implant devices have circular, or oblong, articular ends. The articular ends have a convex upper face and a concave lower face, the convex upper face blending to the concave lower face, and the concave lower face having a curvature less than the curvature of the convex upper face. The implant devices further have a stem extending from the concave lower face away from the upper face, the stem having a maximum radius at the convex lower face and tapering to lesser radius along the length of the stem.
    Type: Application
    Filed: April 13, 2012
    Publication date: August 9, 2012
    Inventors: Peter Strzepa, Stephen D. Cook
  • Publication number: 20120203342
    Abstract: Implant devices having an articular end for repair of articular cartilage defects are provided. The articular end has an oval perimeter, a convex upper face, and a concave lower face. The convex upper face has a first circular pitch radius and a first circular roll radius. At least a portion of the concave lower face has a spherical radius, the convex upper face blending into a rim, wherein at least a first and second portion of the rim extends at least a first distance along a vertical axis and a third and fourth portion of the rim tapers inward along the vertical axis, the rim blending into the concave lower face. The articular cartilage implant devices further include a stem extending from the concave lower face away from the convex upper face along the vertical axis. The stem has a plurality of oval shaped perimeters along the vertical axis.
    Type: Application
    Filed: April 13, 2012
    Publication date: August 9, 2012
    Inventors: Peter Strzepa, Stephen D. Cook
  • Publication number: 20120189669
    Abstract: This invention provides aragonite- and calcite-based scaffolds for the repair, regeneration, enhancement of formation or a combination thereof of cartilage and/or bone, which scaffolds comprise at least two phases, wherein each phase differs in terms of its chemical content, or structure, kits comprising the same, processes for producing solid aragonite or calcite scaffolds and methods of use thereof.
    Type: Application
    Filed: May 23, 2010
    Publication date: July 26, 2012
    Applicant: CARTIHEAL (2009) LTD.
    Inventors: Nir Altschuler, Razi Vago
  • Publication number: 20120191187
    Abstract: A system for positioning an element relative to an articular surface. An embodiment of the system may include a first element having a positional reference relative to an articular surface. The system may further include a second element capable of indicating the positional reference of the first element relative to said articular surface. Of course, many alternatives, variations, and modifications are possible without departing from this embodiment.
    Type: Application
    Filed: April 3, 2012
    Publication date: July 26, 2012
    Applicant: ARTHROSURFACE, INC.
    Inventors: Steven J. Tallarida, Steven W. Ek
  • Publication number: 20120185044
    Abstract: A joint support and subchondral support system and method of use of same for providing structural and dampening support to damaged subchondral bone adjacent to a body joint are disclosed. The joint support and subchondral support system and method of use of same are applicable to many parts of the joint as any area with cartilage disease has an adjoining subchondral component.
    Type: Application
    Filed: March 15, 2012
    Publication date: July 19, 2012
    Inventor: Derek Dee
  • Publication number: 20120177702
    Abstract: This invention provides aragonite- and calcite-based scaffolds for the repair, regeneration, enhancement of formation or a combination thereof of cartilage and/or bone, which scaffolds comprise at least two phases, wherein each phase differs in terms of its chemical content, or structure, kits comprising the same, processes for producing solid aragonite or calcite scaffolds and methods of use thereof.
    Type: Application
    Filed: May 23, 2010
    Publication date: July 12, 2012
    Applicant: CARTIHEAL (2009) LTD.
    Inventors: Nir Altschuler, Razi Vago
  • Publication number: 20120165939
    Abstract: A biocompatible meniscal repair device is disclosed. The tissue repair device includes a scaffold adapted to be placed in contact with a defect in a meniscus, the scaffold comprising a high-density, dry laid nonwoven polymeric material and a biocompatible foam. The scaffold provides increased suture pull-out strength.
    Type: Application
    Filed: December 30, 2011
    Publication date: June 28, 2012
    Applicant: DEPUY MITEK, INC.
    Inventors: Stephanie M. Kladakis, Joseph J. Hammer, Shetty Dhanuraj, Sridevi Dhanaraj, Mark Timmer
  • Patent number: 8192491
    Abstract: A prosthetic device that may be utilized as an artificial meniscus is disclosed. The prosthetic device can restore shock absorption, stability, and function to the knee after the damaged natural meniscus is removed and replaced with the prosthetic device. In some embodiments, the meniscus includes an integral fixation anchor and additional features that minimize the requirement for modification of the implant for proper fit during surgery.
    Type: Grant
    Filed: October 5, 2007
    Date of Patent: June 5, 2012
    Assignee: Active Implants Corporation
    Inventor: Howard Fox
  • Patent number: 8177841
    Abstract: An implant comprising a first, second, and third segment wherein the second and third segments partially overlap the first segment and define a load bearing surface comprising an anterior-posterior (AP) curvature including at least two tangential curves of the portion of the articular surface of the femoral condyle, the tangential curves having different radii of curvature. A drill guide comprises a body portion including a first, second and third bushing spaced along the body portion to establish a first, second and third axes, respectively. Each axis may be substantially normal to the articular surface at three different points along a curvature of the articular surface comprising the two tangential curves. A measuring device comprises a housing defining a longitudinally passageway and an outrigger. A guide pin may be received in the longitudinal passageway and a measuring device determines how far the guide pin is in the passageway.
    Type: Grant
    Filed: February 6, 2008
    Date of Patent: May 15, 2012
    Assignee: Arthrosurface Inc.
    Inventor: Steven W. Ek
  • Patent number: 8177842
    Abstract: Implant devices, and method of using the same, are provided. The implant devices have circular, or oblong, articular ends. The articular ends have a convex upper face and a concave lower face, the convex upper face blending to the concave lower face, and the concave lower face having a curvature less than the curvature of the convex upper face. The implant devices further have a stem extending from the concave lower face away from the upper face, the stem having a maximum radius at the convex lower face and tapering to lesser radius along the length of the stem.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: May 15, 2012
    Assignee: MoiRai Orthopaedics, LLC
    Inventors: Peter Strzepa, Stephen D. Cook
  • Publication number: 20120116510
    Abstract: Methods of using cartilage implant devices are provided. The methods include locating articular cartilage having a leasion, and utilizing an implant having dimensions compatible with the lesion. The method further includes forming a cavity in the articular cartilage, subchondral bone, and cancellous bond, and engaging the implant with the cavity so that the lower face of the articular end of the implant abuts against the subchondral bone, and the stem of the implant abuts against the cancellous bone.
    Type: Application
    Filed: January 20, 2012
    Publication date: May 10, 2012
    Inventors: Peter Strzepa, Stephen D. Cook
  • Patent number: 8163033
    Abstract: A prosthetic device for repairing or replacing cartilage or cartilage-like tissue is described. The prosthetic device comprises at least one layer of highly oriented fibers, a base component and a stabilization area provided in between. Said fibers are aligned to more than 50% in a direction perpendicular to the base component.
    Type: Grant
    Filed: June 17, 2004
    Date of Patent: April 24, 2012
    Assignee: Dr. H.C. Robert Mathys Stifung
    Inventor: Reto Luginbuehl
  • Patent number: 8152846
    Abstract: The invention is directed toward a method and instrumentation to replace a damaged human knee joint meniscus with an allograft meniscus. The implant has its bone base cut to a desired width in a workstation. The finished base is measured in the sizing groove of the sizing block for width and length. The tibia is then drilled with drill to the appropriate depth and length and groove is formed in the tibia with a tissue chisel so that the width is the same as the width of the bone base. The bone base is press fit into the tibia groove and may be secured with a bone screw.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: April 10, 2012
    Assignee: Musculoskeletal Transplant Foundation
    Inventors: Anton J. Steiner, James Shock, John E. Barker, Gregory C. Fanelli
  • Patent number: 8152847
    Abstract: Methods of using cartilage implant devices are provided. The methods include locating articular cartilage having a lesion, and utilizing an implant having dimensions compatible with the lesion. The method further includes forming a cavity in the articular cartilage, subchondral bone, and cancellous bond, and engaging the implant with the cavity so that the lower face of the articular end of the implant abuts against the subchondral bone, and the stem of the implant abuts against the cancellous bone.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: April 10, 2012
    Assignee: MoiRai Orthopaedics, LLC
    Inventors: Peter Strzepa, Stephen D. Cook
  • Patent number: 8147557
    Abstract: A mobile tibial assembly includes a tibial tray and a tibial insert configured to move relative to the tibial tray. The tibial insert includes a platform having an upper bearing surface defining a dwell point of the upper bearing surface. The dwell point is spaced-apart from a center of the bearing surface.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: April 3, 2012
    Assignee: DePuy Products, Inc.
    Inventors: Jordan S. Lee, James M. Rhodes, John Francis Lizak
  • Patent number: 8142502
    Abstract: An apparatus and method of distributing a load to a cartilage defect repair plug is provided. A load is applied to a first articulation layer. The load is distributed to a second layer and the load is transferred in the normal direction to the first density of subchondral bone. The load is distributed to a third layer and the load is transferred in the normal direction to a second density of subchondral bone. The load is then distributed to a fourth layer and the load is transferred in the normal direction to a third density of subchondral bone.
    Type: Grant
    Filed: July 19, 2010
    Date of Patent: March 27, 2012
    Assignee: Biomet Sports Medicine, LLC
    Inventors: Kevin T. Stone, Karen S. Troxel
  • Patent number: 8128697
    Abstract: A unicompartmental knee prosthesis for implantation into a knee joint includes a body having a substantially elliptical shape in plan and a pair of contoured opposed faces including a first face and a second face, the second face including a concave surface. The prosthesis is free of fixation to a permanent location within the knee joint compartment. A peripheral edge extends between the faces and has a first side, a second side opposite the first side, and a first end and a second end opposite the first end, the body including a cusp comprising a reverse curve downward from to the first face at one of the first and second ends. A first dimension D is defined by the first end and the second end, and a second dimension F is defined by the first side and the second side. A coordinate system origin (CSO) is at an intersection of D and F, the body including a material thickness at the CSO, where the dimension F is from about 0.25 to about 1.5 of the dimension D.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: March 6, 2012
    Inventors: Barry M. Fell, Richard H. Hallock
  • Patent number: 8114156
    Abstract: A flexibly compliant ceramic prosthetic meniscus comprised of ceramic fibers formed into a rope-like structure. The rope-like structure is coiled into a pad configuration with the proximal and distal ends completely placed into an interior of the pad to create a more stabilized structure. A flexibly compliant ceramic prosthetic meniscus fixed together by being sewn together using a high melting temperature ceramic thread. A flexibly compliant ceramic fiber prosthetic fixed together by being thermally fused. A flexibly compliant ceramic fiber prosthetic meniscus is thermally fused onto a metal prosthesis of the said patient's articulating joint. A flexibly compliant ceramic fiber prosthetic meniscus is bonded onto a metal prosthesis of the said patient's articulating joint.
    Type: Grant
    Filed: March 12, 2009
    Date of Patent: February 14, 2012
    Inventor: Edwin Burton Hatch
  • Publication number: 20120022649
    Abstract: Methods and apparatuses for treatment of various joint conditions include a device inserted into a joint space. During delivery, the profile of the device is constrained in at least one dimension to minimize invasive impact on tissue and/or bone. The device may be restrained for implantation by a thread or a rigid elongate member. After insertion, the device may expand at the implantation site.
    Type: Application
    Filed: September 26, 2011
    Publication date: January 26, 2012
    Applicant: Articulinx, Inc.
    Inventors: Janine ROBINSON, Michael HOGENDIJK
  • Patent number: 8092530
    Abstract: Cartilage implant devices having oval articular ends are provided. The articular ends have a convex upper face and a concave lower face. The convex upper face has a first circular pitch radius and a first circular roll radius. The concave lower face has a first surface comprising a second circular pitch radius and a second circular roll radius, and at least two second surfaces each second surface having a third circular pitch radius and a third circular roll radius. The convex upper face blends into a rim, wherein at least a first and second portion of the rim extends at least a first distance along the vertical axis and a third and fourth portion of the rim tapers inward along the vertical axis, the rim blends into the concave lower face. The implant devices further have a stem extending from the concave lower face away from the convex upper face.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: January 10, 2012
    Assignee: MoiRai Orthopedics, LLC
    Inventors: Peter Strzepa, Stephen D. Cook
  • Patent number: 8092529
    Abstract: Methods and devices are provided for regenerating a meniscus. The devices comprise a layer of toughened naturally occurring extracellular matrix. The devices may, optionally, further comprise a biologic material to provide a framework for meniscus regeneration. The methods comprise the steps of removing a portion of a meniscus to provide a space, and inserting a device comprising a layer of toughened naturally occurring extracellular matrix into the space.
    Type: Grant
    Filed: July 15, 2002
    Date of Patent: January 10, 2012
    Assignee: DePuy Products, Inc.
    Inventors: Prasanna Malaviya, Herbert Eugene Schwartz, Terrence David Whalen, Mark Joseph Pelo, Philip Joseph Jenks, Pamela Lynn Plouhar, Jerry Lee Lower
  • Publication number: 20120004725
    Abstract: A prosthetic device for use as an artificial meniscus is disclosed. The prosthetic device restores shock absorption, stability, and function to the knee joint after removal of the damaged natural meniscus. In some embodiments, the prosthetic device is pre-tensioned to improve the fit of the prosthetic device within the knee joint and, thereby, maximize the contact area of the load-bearing surfaces to distribute loading through the prosthetic device in a manner substantially similar to that of a healthy natural meniscus. In some embodiments, the pre-tensioned prosthetic device is smaller, or scaled-down, relative to the size of a healthy natural meniscus.
    Type: Application
    Filed: September 9, 2011
    Publication date: January 5, 2012
    Applicant: ACTIVE IMPLANTS CORPORATION
    Inventors: Avraham Shterling, Eran Linder-Ganz, Amir Danino
  • Patent number: 8080059
    Abstract: A prosthesis for surgical implantation into a knee joint compartment between a femoral condyle and its corresponding tibial plateau includes a body including a bottom face, an opposed top face, and a peripheral edge extending between the top and bottom faces. The body has a first portion and at least one second portion, wherein at least one second portion is configured to store and release at least one active component into the knee joint compartment without degradation of the mechanical function of the prosthesis.
    Type: Grant
    Filed: January 15, 2007
    Date of Patent: December 20, 2011
    Inventor: Barry M. Fell
  • Patent number: 8077950
    Abstract: The present invention relates to methods for determining meniscal size and shape for use in designing therapies for the treatment of various joint diseases. The invention uses an image of a joint that is processed for analysis. Analysis can include, for example, generating a thickness map, a cartilage curve, or a point cloud. This information is used to determine the extent of the cartilage defect or damage and to design an appropriate therapy, including, for example, an implant. Adjustments to the designed therapy are made to account for the materials used.
    Type: Grant
    Filed: August 10, 2010
    Date of Patent: December 13, 2011
    Assignee: ConforMIS, Inc.
    Inventors: Konstantinos Tsougarakis, Daniel Steines, Bhaskar Rao Vissa, Philipp Lang, Barry J. Linder
  • Publication number: 20110288642
    Abstract: A cushion is disclosed for insertion in a patient's knee joint to serve as a buffer between a patient's femur and tibia. The cushion is filled with a substantially incompressible fluid, which can be a foam or a gel or a liquid, like water, which is capable of supporting the entire weight of the patient's body. The cushion is preferably made from a flexible material that allows relative movement between the patient's femur and tibia, while resisting rupture as it supports these two bones as they are moving relative to one another as the knee joint is flexed, bent or extended.
    Type: Application
    Filed: November 24, 2009
    Publication date: November 24, 2011
    Applicant: Milux Holding SA
    Inventor: Peter Forsell
  • Publication number: 20110288643
    Abstract: Methods of selecting and implanting prosthetic devices for use as a replacement meniscus are disclosed. The selection methods include a pre-implantation selection method and a during-implantation selection method. The pre-implantation selection method includes a direct geometrical matching process, a correlation parameters-based matching process, and a finite element-based matching process. The implant identified by the pre-implantation selection method is then confirmed to be a suitable implant in the during-implantation selection method. Methods of implanting meniscus prosthetic devices are also disclosed.
    Type: Application
    Filed: July 29, 2011
    Publication date: November 24, 2011
    Applicant: Active Implants Corporation
    Inventors: Eran Linder-Ganz, Avraham Shterling, Noam Weissberg