Screw Anchoring Means Patents (Class 623/22.36)
  • Patent number: 11771801
    Abstract: The present invention comprises a polymer and/or polymer composite based sleeve to be fitted between an extended body, such the neck, trunnion, and/or stem of a hip implant, and a receiving body, such as a femoral head in a hip implant, that reduces wear, decreases toxic material from wear debris, enhances the mechanical connection of the extension and receiving body, reduces or eliminates impingement with receiving body, delocalize stress concentrations, and may also serve as a modifying junction between an extension and receiving body of unmatched size. The polymeric based sleeve presently disclosed comprises an inert and/or biologically favorable material which may be used in its virgin form or contain biocompatible additives. In order to best match patient and implant requirements, modifications may be made in the length, thickness, composition, as well as the presence of a taper, or lack thereof, in order to be compatible with existing devices.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: October 3, 2023
    Assignee: Evonik Operations GmbH
    Inventors: Balaji Prabhu, Andrew Wood, Mahrokh Dadsetan, Andreas Karau, Harsh Patel, Marc Knebel, Suneel Bandi
  • Patent number: 11690722
    Abstract: An implant for repairing an articular cartilage defect site including an implant fixation portion with an upper segment and at least one bone interfacing segment and a top articulating portion with an articulating surface and an engagement surface. The upper segment includes a supporting plate with a first locking mechanism segment. The engagement surface includes a second locking mechanism segment. The first locking mechanism segment with at least two channels is structured to couple to the second locking mechanism segment with at least two protrusions. The at least one bone interfacing segment structured for insertion into the articular cartilage defect site. An implant including an implant fixation portion, a top articulating portion, and a locking mechanism with a first locking segment coupled to the upper segment and a second locking segment coupled to the at least one engagement surface and structured to couple to the first locking segment.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: July 4, 2023
    Assignee: BIOPOLY, LLC
    Inventors: Herbert E. Schwartz, Francis S. Proch, Nathanael K. Conner
  • Patent number: 11589994
    Abstract: The augments, systems and methods for supporting acetabular implants described herein can include an augment (100) for supporting an acetabular shell (90) having a first portion (136) of a locking mechanism. The system can also include a shell having a second portion of a locking mechanism (96). The first portion of the locking mechanism and the second portion of the locking mechanism can be adapted to move relative to one another from an unlocked state to a locked state to fixedly couple the augment to the shell. In some examples, the augment can be contourable to match the shape of a bone.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: February 28, 2023
    Assignee: Biomet Manufacturing, LLC
    Inventors: Aaron P. Smith, Stephanie Klunk, Kirk J. Bailey
  • Patent number: 11291550
    Abstract: The disclosure provides an articular fossa prosthesis and an articular prosthesis with the articular fossa prosthesis. An outer cup of the articular fossa prosthesis is disposed in a target skeleton, a lining is disposed in the outer cup, an articular head structure may be movably disposed in the lining, a first communicating passage communicated with an articular capsule is disposed on the outer cup, a second communicating passage communicated with the articular capsule is disposed on the lining, and the first communicating passage is communicated with the second communicating passage to guide a synovial fluid to a contact surface between the lining and the articular head structure.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: April 5, 2022
    Assignee: Beijing AK Medical Co., Ltd.
    Inventor: Weiping Zhang
  • Patent number: 11103355
    Abstract: A medical device for implantation in a hip joint of a human patient is provided. The natural hip joint having a ball shaped caput femur as the proximal part of the femoral bone with a convex hip joint surface towards the centre of the hip joint and a bowl shaped acetabulum as part of the pelvic bone with a concave hip joint surface towards the centre of the hip joint. The caput femur has a centrally placed longitudinal extension, extending through the center of the caput and collum femur, aligned with the collum femur, defined as the caput and collum femur center axis. The medical device comprising; an artificial acetabulum, comprising a concave surface towards the centre of the hip joint. The artificial concave acetabulum is adapted to, when implanted, be fixated to the femoral bone of the human patient, and be in movable connection with an artificial caput femur fixated to the pelvic bone of the patient.
    Type: Grant
    Filed: July 12, 2010
    Date of Patent: August 31, 2021
    Inventor: Peter Forsell
  • Patent number: 11076892
    Abstract: An anterior cervical plate system is provided. The plate is configured to receive bone screws for attachment to and immobilization of adjacent vertebrae of the spine. The system includes a cup retained inside a through hole of the plate by a cup retainer. A bone screw is retained inside the cup by a lock that is movable between a locked position and an unlocked position. The cup is permitted to angulate forward and backward with respect to the plate and the bone screw is permitted to angulate conically with respect to the cup to provide a plate system with extreme angulation for the bone screw.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: August 3, 2021
    Assignee: NeuroStructures, Inc.
    Inventors: Moti Altarac, Joey Reglos
  • Patent number: 10779948
    Abstract: The present disclosure provides an acetabular defect reconstructive prosthesis, comprising: an iliac support, the iliac support including a support seat (11) and a connecting wing plate (12) provided on the support seat (11), and the support seat (11) being contacted and matched with an ilium (1); and an acetabular cup (20) rotatably connected with the support seat (11) together. The technical solutions of the present disclosure can effectively solve the problems of reconstruction and long-term stability of a peri-acetabular defect in the related technology.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: September 22, 2020
    Assignee: Beijing AK Medical Co., Ltd.
    Inventors: Wei Guo, Caimei Wang, Tao Ji
  • Patent number: 10561500
    Abstract: Provided is an implant receiving apparatus (10) comprising a core (20), the core defining a first end (30) and a second end (40), a wall (50) comprising inner surface (60) and outer surface (70) and a centerline (80) extending centrally of and between the ends (30, 40), the size and shape of the core (20) defining a socket or cavity (90) adapted to receiving an implant engaging member (100), wherein the wall comprises at least one threaded bore (110) for engaging a screw retainer, the bore traversing through the wall from the inner surface to the outer surface. Also provided is an implant engaging member, an implant system comprising both an implant engaging member and implant receiving apparatus as well as kits comprising an implant receiving apparatus.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: February 18, 2020
    Assignee: Stemmed Implant Technology Inc.
    Inventor: Michael Lococo
  • Patent number: 10245149
    Abstract: A reverse total hip prosthesis is characterized by a femoral cup component and an acetabular ball component and is used for reconstruction of a hip joint. The prosthesis reverses the mechanics across the joint medializing the center of rotation, preventing dislocation in a posterior direction. Both ball and socket portions of the components lie outside of bone enabling larger sizing of the femoral and acetabular components improving stability, regardless of the size of the patient's anatomy. A method for reverse hip prosthesis implantation eliminates reaming through the base of the acetabulum preserving acetabular bone stock.
    Type: Grant
    Filed: August 2, 2016
    Date of Patent: April 2, 2019
    Inventor: Nicholas John Loffredo
  • Patent number: 10058335
    Abstract: The present invention relates to a modularized patient-specific registration guide and a system using the same and, more specifically, to a modularized patient-specific registration guide capable of rapidly carrying out an initial registration step for a bone, which is a surgical site, and inducing a registration step to be easily performed even during an operation, and a system using the same. The modularized patient-specific registration guide, according to one embodiment of the present invention, is a registration guide manufactured according to a three-dimensional shape of a bone obtained in an imaging device, the registration guide comprising: a first member having one or more markers and one or more extending parts that come in contact with the bone, and having a groove on one side thereof; and a second member accommodated in or separable from the groove of the first member and having one or more markers.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: August 28, 2018
    Assignee: SNU R&DB FOUNDATION
    Inventors: Kun Woo Lee, Tae Ho Jang
  • Patent number: 9901451
    Abstract: Systems, devices, and methods are provided for orthopedic implants. The implants may include a base member, such as an acetabular shell or an augment, that is configured to couple with an augment, flange cup, mounting member, or any other suitable orthopedic attachment. Mounting members include, for example, flanges, blades, hooks, and plates. In some embodiments, the orthopedic attachments may be adjustably positionable about the base member or other attachments, thereby providing modularity for assembling and implanting the device, and various securing and/or locking mechanisms may be used between the components of the implant.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: February 27, 2018
    Assignee: Smith & Nephew, Inc.
    Inventors: Justin Steve Conway, David C. Kelman, Richard D. Lambert, Jeffrey A. Sharp, Jeffrey Joel Shea, Brian Ronald Yokoo
  • Patent number: 9744046
    Abstract: An acetabular implant including an acetabular cup having a wall with a first elongated slot defining a passage through the wall, and an insert slidably received in the first elongated slot and movable relative to the slot in a first direction. The insert can include a second elongated slot that extends in a second direction different than the first direction. The second elongated slot can be configured to slidably receive a bone fastener and guide the bone fastener through the passage of the acetabular cup at a selected angle.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: August 29, 2017
    Assignee: Biomet Manufacturing, LLC
    Inventors: Jason D. Meridew, W. Jason Slone
  • Patent number: 9474613
    Abstract: Improved methods, devices, systems and models for facilitating supplemental fixation of implant components to surrounding anatomical features, including supplemental fixation of acetabular components to the acetabulum.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: October 25, 2016
    Inventor: William B. Kurtz
  • Patent number: 9427321
    Abstract: Interlocking acetabular fixation screws having a threaded shaft for threading into cancellous bone and a tapered threaded head for threading into tapered threaded screw holes in a reverse hip acetabular cup. The reverse hip acetabular cup has a central stem and the threaded screw holes are drilled at an angle that allows drilling of the bone of the acetabular cavity, placement of the screws and tightening of the screws without touching the central stem and without interference from the central stem.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: August 30, 2016
    Assignee: HIP INNOVATION TECHNOLOGY, LLC
    Inventor: Zafer Termanini
  • Patent number: 9180014
    Abstract: A medical device for treating hip joint osteoarthritis in a human patient by providing at least one artificial hip joint surface is provided. The hip joint having a ball shaped caput femur as the proximal part of the femoral bone with a convex hip joint surface towards the center of the hip joint and a bowl shaped etabulum as part of the pelvic bone with a concave hip joint surface towards the center of the hip joint. The medical device comprises the artificial hip joint surface comprising at least one of; an artificial caput femur or an artificial caput femur surface comprising, a convex form towards the center of the hip joint, and an artificial acetabulum or an artificial acetabulum surface comprising, a concave form towards the center of the hip joint.
    Type: Grant
    Filed: July 12, 2010
    Date of Patent: November 10, 2015
    Inventor: Peter Forsell
  • Patent number: 9089430
    Abstract: A prosthetic assembly comprising: a body portion; first and second flanges provided on a rim of the body portion; the first and second flanges being provided with first and second openings respectively; and a bridging member connectable to the first and second flanges such that the member spans between the first and second flanges, the member being provided with a third opening; wherein the first, second and third openings are suitable for receiving first, second and third bone attachment members respectively.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: July 28, 2015
    Assignee: Biomet UK Limited
    Inventors: Christos Pappas, Heikki Vilhelm Pitkanen, Robert John Andrew Bigsby, Esa Taplo Anttila, Anthony Ward
  • Publication number: 20150005892
    Abstract: An acetabular cup system includes an acetabular cup having a wall with an inner surface and an outer surface. The acetabular cup includes a fixation opening through the wall, the fixation opening including a first wall portion adjacent to the inner surface and a second wall portion adjacent to the outer surface. The acetabular cup system also includes a fixation fastener including a head and a shaft with a bone-anchoring portion. The fastener can be inserted though the fixation opening. The head includes a first head portion engageable with the first wall portion and a second head portion engageable with the second wall portion.
    Type: Application
    Filed: September 18, 2014
    Publication date: January 1, 2015
    Inventor: Jason D. MERIDEW
  • Patent number: 8900321
    Abstract: An anchor for securing an implant within bone. In one embodiment, the anchor is used to aid in securing an acetabular cup within an acetabulum. The anchor may be implanted within an ischial defect of the pelvis, and is attached to an outer surface of the acetabular cup shell. The anchor is made at least in part of, and may be made entirely of, a porous metal material to facilitate the ingrowth of surrounding bone into the anchor for osseointegrating the anchor into the surrounding bone. The anchor may be secured to the acetabular shell by a screw fastener or by cement, for example. The anchor may be secured to the acetabular shell before the anchor and the acetabular shell are together implanted into the acetabulum, or the anchor may be implanted into the ischial defect, followed by seating the acetabular shell in the acetabulum and then securing the acetabular shell to the anchor.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: December 2, 2014
    Assignee: Zimmer, Inc.
    Inventors: Joshua B. Weiss, Todd Sekundiak, Mobarakh Mohammed, John Chernosky, Natalia Fridshtand
  • Publication number: 20140336778
    Abstract: Interlocking acetabular fixation screws having a threaded shaft for threading into cancellous bone and a tapered threaded head for threading into tapered threaded screw holes in a reverse hip acetabular cup. The reverse hip acetabular cup has a central stem and the threaded screw holes are drilled at an angle that allows drilling of the bone of the acetabular cavity, placement of the screws and tightening of the screws without touching the central stem and without interference from the central stem.
    Type: Application
    Filed: July 20, 2012
    Publication date: November 13, 2014
    Applicant: Hip Innovation Tchnology, LLC
    Inventor: Zafer Termanini
  • Patent number: 8864838
    Abstract: A buttress plate for retaining an acetabular cup implanted in an acetabulum is provided. The buttress plate includes a base having a first end and a second end. The first end extends along a plane and includes at least one passage for receiving a fastener to secure the base to the acetabulum. The second end includes a lip extending transverse to the plane for securing the acetabular cup within the acetabulum.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: October 21, 2014
    Assignee: The Cleveland Clinic Foundation
    Inventor: Wael K. Barsoum
  • Publication number: 20140277558
    Abstract: Improved methods, devices, systems and models for facilitating supplemental fixation of implant components to surrounding anatomical features, including supplemental fixation of acetabular components to the acetabulum.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Inventor: William B. Kurtz
  • Publication number: 20140180432
    Abstract: Systems, devices, and methods are provided for orthopedic implants. The implants may include a base member, such as an acetabular shell or an augment, that is configured to couple with an augment, flange cup, mounting member, or any other suitable orthopedic attachment. Any of the implantable components may be include one or more porous surfaces. The porous surface may be textured by protrusions that connect to and extend from the surface. The sizes and concentration of the protrusions may be varied for specific applications to accommodate different implants and patient anatomies. A porous implant may also include one or more internal or external solid portions that strengthen the implant.
    Type: Application
    Filed: February 27, 2014
    Publication date: June 26, 2014
    Applicant: Smith & Nephew, Inc.
    Inventors: Justin Steve Conway, Ryan L. Landon, Jeffrey Joel Shea
  • Publication number: 20140058525
    Abstract: An acetabular cup system includes an acetabular cup having a wall with an inner surface and an outer surface. The acetabular cup includes a fixation opening through the wall, the fixation opening including a first wall portion adjacent to the inner surface and a second wall portion adjacent to the outer surface. The acetabular cup system also includes a fixation fastener including a head and a shaft with a bone-anchoring portion. The fastener can be inserted though the fixation opening. The head includes a first head portion engageable with the first wall portion and a second head portion engageable with the second wall portion.
    Type: Application
    Filed: October 14, 2013
    Publication date: February 27, 2014
    Applicant: Biomet Manufacturing, LLC
    Inventor: Jason D. MERIDEW
  • Patent number: 8574306
    Abstract: A method for placing a prosthetic acetabular cup within an acetabulum comprises implanting an acetabular cup with an eccentric socket. The acetabular cup may be substantially hemispherical with a cup rim and a portion of the cup rim removed defining a relief. The cup may accommodate a concentric liner in an eccentric position. Screw apertures may be present on the periphery of the cup and the screw trajectories may converge toward the dome of the cup. The cup is attached to a tool which is offset relative to the cup because of the substantially eccentric socket. The relief, when the cup is secured to the acetabulum, is positioned substantially anterior and the socket is positioned more posterior to provide a more natural center of rotation of a femoral head within the socket. The first relief reduces impingement of the acetabular cup on soft tissue.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: November 5, 2013
    Inventors: Michael D. Ries, Karen E. Mohr
  • Patent number: 8556985
    Abstract: An acetabular cup system includes an acetabular cup having a wall with an inner surface and an outer surface. The acetabular cup includes a fixation opening through the wall, the fixation opening including a first wall portion adjacent to the inner surface and a second wall portion adjacent to the outer surface. The acetabular cup system also includes a fixation fastener including a head and a shaft with a bone-anchoring portion. The fastener can be inserted though the fixation opening. The head includes a first head portion engageable with the first wall portion and a second head portion engageable with the second wall portion.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: October 15, 2013
    Assignee: Biomet Manufacturing, LLC
    Inventor: Jason D. Meridew
  • Patent number: 8506643
    Abstract: An acetabular prosthesis system configured to be coupled to a surgically-prepared acetabulum includes an acetabular shell, an augment component, and a fastener configured to couple the acetabular shell and the augment component together.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: August 13, 2013
    Assignee: DePuy Synthes Products, LLC
    Inventors: Ryan C. Keefer, Jeffrey A. Rybolt, Hengda D. Liu, Matthew D. Smith, Gerhard J. A. Drescher
  • Publication number: 20130204388
    Abstract: An acetabular implant including an acetabular cup having a wall with a first elongated slot defining a passage through the wall, and an insert slidably received in the first elongated slot and movable relative to the slot in a first direction. The insert can include a second elongated slot that extends in a second direction different than the first direction. The second elongated slot can be configured to slidably receive a bone fastener and guide the bone fastener through the passage of the acetabular cup at a selected angle.
    Type: Application
    Filed: January 30, 2013
    Publication date: August 8, 2013
    Applicant: BIOMET MANUFACTURING CORPORATION
    Inventor: Biomet Manufacturing Corporation
  • Patent number: 8486151
    Abstract: The invention relates to a cotyloid component of a hip prosthesis, said cotyloid component being hollow and in the form of a cup whose outer part has a thread allowing it to be fixed in the iliac bone, said thread being a discontinuous self-cutting double thread (20, 21), and said cotyloid component having a flattened upper pole (1), a coating that promotes osseointegration on its outer face (10), and a concave, substantially hemispherical and polished inner surface (11), characterized in that: (a) the pitch of the threads (20, 21) decreases from the upper pole (1) towards the equatorial periphery (3) of the cotyloid component, (b) the thicknesses of the threads (20, 21) increase from the upper pole (1) of the cotyloid component towards its periphery (3), (c) the crest of the threads (20, 21) is sharp towards the pole (1) of the cotyloid component and rounded or substantially trapezoidal towards the equatorial periphery (3) of the cotyloid component.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: July 16, 2013
    Inventors: Boris Theillez, Nicolas Chanzy, Frederic Farizon, Philippe Adam, Remi Philippot, Eric Favre, Rodophe Limozin, Gilles Provost, Serge Doycinovich, Jean-Philippe Camilleri
  • Publication number: 20130066437
    Abstract: Revision hip implants and prosthesis systems include femoral heads, cups, screws, bridges, and segmental prostheses for revision surgeries.
    Type: Application
    Filed: May 18, 2011
    Publication date: March 14, 2013
    Applicant: Smith & Nephew, Inc.
    Inventor: Steven H. Weeden
  • Publication number: 20130046389
    Abstract: An acetabular implant has (a) a body including a substantially convex exterior surface configured to be received within and engage an acetabulum and a substantially concave interior surface sized and shaped to receive a head portion of a femur; (b) a rim extending about a periphery of the body and including a plurality of first holes, each of the first holes being configured to lockingly receive a bone fixation element therethrough in an angularly stable configuration; and (c) a flange extending radially from the rim and including a plurality of second holes. Each of the second holes is configured to receive a bone fixation element therethrough in an angularly stable configuration.
    Type: Application
    Filed: February 16, 2012
    Publication date: February 21, 2013
    Inventors: Johann FIERLBECK, Alfred Niederberger, Herbert Resch
  • Publication number: 20120283840
    Abstract: A partial rim implant for an acetabulum in a pelvic bone comprises a ridge, a bearing surface, and a fixation surface. The ridge is oriented to replace a labrum. The bearing surface is configured to align with the articulating surface of the acetabulum. The bearing surface extends from the ridge toward the apex of the acetabulum. The fixation surface is configured to fix the implant to a prepared bone surface of the pelvic bone.
    Type: Application
    Filed: February 25, 2010
    Publication date: November 8, 2012
    Inventors: Phillip Frederick, Kevin Belew, Lauren Jasper, James Gatewood, Luke Gibson, John Masonis, Michael Cooper, David C. Kelman
  • Publication number: 20120265319
    Abstract: A total hip arthroplasty includes a femoral prosthesis and an acetabular prosthesis. The femoral prosthesis has a ball on a neck portion of a femoral component including a noncircular femoral body a portion coated with a porous bone ingrowth coating for noncemented fixation within a resected patient femur. The femoral body is tapered, to include a combination of a medial-lateral taper, an anterior-posterior taper, and a lateral-to-medial taper for secure seated fixation into the medullary canal of a resected femur. The acetabular prosthesis includes a hemispherical metal cup having a porous bone ingrowth surface for secure fixation within a prepared patient acetabular socket. A bearing insert is initially seated within the acetabular cup in a “trial” position without locking to determine cup placement and freedom of leg movement, and thereafter reseated in a “lock” position. A femoral broach and a bone punch tool are also provided.
    Type: Application
    Filed: April 9, 2012
    Publication date: October 18, 2012
    Applicant: TOTAL JOINT ORTHOPEDICS
    Inventors: Robert G. Prybyla, Benjamin Casey
  • Patent number: 8277514
    Abstract: A component, e.g. a prosthetic ball and socket joint like an acetabular cup of a prosthetic joint, having a male or female location feature in a surface thereof for mutual interfit with a fixing member of a fixing assembly for securing the fixing member to the surface of the component and optionally for securing the component to a second component by means of a fixing screw.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: October 2, 2012
    Assignee: T. J. Smith & Nephew Limited
    Inventors: Roger William Frank Ashton, Derek James Wallace McMinn
  • Patent number: 8197550
    Abstract: An orthopedic prosthesis for implantation into a bone of a patient includes a porous metal shell adapted to be affixed within the bone. The porous metal shell includes an outer surface adapted to receive bone ingrowth and an inner surface adapted to engage a liner. The porous metal shell is porous from the outer surface to the inner surface. A non-porous member may be affixed to the porous metal shell. The non-porous member may include a piercing member extending from the outer surface, the piercing member adapted to penetrate the bone in an implanted position. The non-porous member may include spikes or fins. In one example, the piercing member may define a reduced material cross section at an interface with the outer surface of the porous metal shell. The piercing member may be adapted to be broken at the reduced material cross section and removed from the porous metal shell.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: June 12, 2012
    Assignee: Biomet Manufacturing Corp.
    Inventors: David R. Brown, Jason D. Meridew, Robert M. Ronk, Troy W. Hershberger
  • Publication number: 20120065736
    Abstract: An acetabular cup system includes an acetabular cup having a wall with an inner surface and an outer surface. The acetabular cup includes a fixation opening through the wall, the fixation opening including a first wall portion adjacent to the inner surface and a second wall portion adjacent to the outer surface. The acetabular cup system also includes a fixation fastener including a head and a shaft with a bone-anchoring portion. The fastener can be inserted though the fixation opening. The head includes a first head portion engageable with the first wall portion and a second head portion engageable with the second wall portion.
    Type: Application
    Filed: November 18, 2011
    Publication date: March 15, 2012
    Applicant: Biomet Manufacturing Corp.
    Inventor: Jason D. Meridew
  • Publication number: 20120022663
    Abstract: Systems, devices, and methods are provided for orthopedic implants. The implants may include a base member, such as an acetabular shell or an augment, that is configured to couple with an augment, flange cup, mounting member, or any other suitable orthopedic attachment. An implant may include a base member that has at least two projections with a gap between the projections. The gap between the projections allows the implant to be implanted around another implanted component, such as around a bone screw of an acetabular shell. The implant may include a fixation element, such as a screw or a cement trough, on one or more projections to couple the implant to an implanted acetabular shell. The implant may also include timing marks to facilitate alignment with corresponding marks on another implanted component.
    Type: Application
    Filed: June 8, 2011
    Publication date: January 26, 2012
    Applicant: SMITH & NEPHEW, INC.
    Inventors: Nathaniel Quinn, Jeffrey Joel Shea
  • Patent number: 8021432
    Abstract: An acetabular cup assembly implantable at an acetabular socket can include an acetabular cup defining a partially spherical bone engaging surface and having a uniform thickness. A spacer can include a body portion formed of porous metal and define a radial support surface. The porous metal can be adapted to receive bone ingrowth through interstitial space at pores defined therein. The spacer can further comprise a piercing portion adapted to be advanced into the acetabular socket. The spacer can bridge a gap defined between the acetabular socket and the acetabular cup. Filler can be disposed between the acetabular cup and the acetabular socket in areas adjacent to the spacer such that the spacer and the filler collectively define a continuous support surface adapted to support the acetabular cup at the bone engaging surface.
    Type: Grant
    Filed: October 11, 2006
    Date of Patent: September 20, 2011
    Assignee: Biomet Manufacturing Corp.
    Inventors: Jason D Meridew, Adolph Lombardi, Keith Berend, Troy Hershberger
  • Patent number: 7985260
    Abstract: An acetabular prosthesis system configured to be coupled to a surgically-prepared acetabulum includes an acetabular shell, an augment component, and a fastener configured to couple the acetabular shell and the augment component together.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: July 26, 2011
    Assignee: DePuy Products, Inc.
    Inventors: Ryan C. Keefer, Jeffrey A. Rybolt, Hengda D. Liu, Matthew D. Smith, Gerhard J. A. Drescher
  • Patent number: 7947083
    Abstract: A component, e.g. a prosthetic ball and socket joint like an acetabular cup (11) of a prosthetic joint, having a male or female location feature (15) in a surface thereof for mutual interfit with a fixing member (12) of a fixing assembly for securing the fixing member to the surface of the component and optionally for securing the component to a second component by means of a fixing screw (13).
    Type: Grant
    Filed: June 11, 2004
    Date of Patent: May 24, 2011
    Assignee: T. J. Smith & Nephew Limited
    Inventors: Roger William Frank Ashton, Derek James Wallace Mc Minn
  • Patent number: 7942880
    Abstract: In the repair of bone voids and deficiencies, rather than forming a planar, angled surface that could result in a “slip plane,” an implant features a defined geometric pattern such as a stair-step, which mates with a corresponding stair-step pattern formed on the bone. Screws or alternative fasteners extend through one or more of the stair-step patterns, and into the bone, such that local interface around each fastener is substantially transverse to the axis of the fastener, thereby achieving a set of effective, compression bond. As such, shear stresses that might be associated with an angled, planar fixation are converted to compressive forces, leading to a longer life and a reduced need for revision. Although in the preferred embodiment the plurality of surfaces defines a stair-step having right angles, other geometric patterns are applicable, so long as an irregular defect may be made more regular, and/or compressive forces are used to prevent shear stress.
    Type: Grant
    Filed: February 18, 2005
    Date of Patent: May 17, 2011
    Inventor: Morton Bertram, III
  • Patent number: 7918896
    Abstract: A unitary acetabular cup prosthesis for a deficient acetabulum of a hip bone having a cup portion and a pair of adjacent screw retaining members extending from the cup and oriented in a cooperative with one another. A second pair of screw retaining members are preferably provided, with the first and second pair of screw retaining members oriented such that the prosthesis can be used in either a left or a right acetabulum of the patient. The screw retaining members may be formed on a single flange. The screw retaining members are fixedly inclined and offset relative to the rim of the cup. Each screw retaining member has a threaded hole inclined relative to the rim such that an axis of the threaded hole converges toward the axis of the cup portion in one dimension and is oblique to the axis of the cup portion in a second dimension.
    Type: Grant
    Filed: September 15, 2004
    Date of Patent: April 5, 2011
    Assignee: Wright Medical Technology, Inc.
    Inventors: Koen DeSmet, Steven F. Seyer
  • Publication number: 20100256771
    Abstract: An acetabular component (10) for hip surgery has an outer convex surface for location in the acetabulum and an inner concave bearing surface (16) suitable for holding and bearing against a corresponding femoral head component, without need for an interposed liner. The outer convex surface and the inner concave surface define between them an integral wall (14) of the component. Screw holes (18) are provided though the wall, from the inner concave bearing surface to the outer convex surface for screw fixation of the component in the acetabulum.
    Type: Application
    Filed: September 11, 2008
    Publication date: October 7, 2010
    Inventors: Paul Roberts, Peter Grigoris
  • Publication number: 20100228355
    Abstract: A hip implant assembly including a spherical shaped ball and an elongated stem. An annular defining rim separates the ball from the stem and abuts, in a maximum inserting condition, over an exterior reconditioned surface of the femur and upon inserting the stem within an interior passageway formed within the femur. A cup shaped support seats the ball in a universally articulating permitting fashion via a flexible and resilient ligament which extends from the ball and is received within a recess passageway of the cup. The cup also includes a mounting surface with a central projecting portion which is in turn resistively fitted within an undercut defined recess formed in the ilium bone in communication with a base surface of the reconditioned acetabulum socket.
    Type: Application
    Filed: January 5, 2010
    Publication date: September 9, 2010
    Applicant: LINARES MEDICAL DEVICES, LLC
    Inventor: Miguel A. Linares
  • Publication number: 20100125340
    Abstract: A fixation technique is provided whereby a solid metal acetabular cup, such as is used with hip resurfacing implants, or so called “metal on metal” bearings used with traditional total hip replacement, which do use supplemental screw fixation, can achieve immediate fixation to the acetabulum using a acetabular fixation screw, which couples to an acetabular metal cup by way of a precision taper coupling (tapered interference fit) between the fixation screw and the acetabular cup. Under normal loading, the cold weld achieved between the two surfaces is stable, and disassociation between the two metal surfaces can be achieved only with significant force.
    Type: Application
    Filed: November 14, 2008
    Publication date: May 20, 2010
    Inventor: Keith J. Ure
  • Patent number: 7604667
    Abstract: A prosthesis for a deficient acetabulum of a patient having a cup portion and a flange member. The flange member has a base portion that extends upward along a portion of the upper rim. A generally planar screw retaining portion extends from the base portion, and is inclined from the base portion such that at least a lateral portion of a lower surface of the screw retaining portion is positioned below the upper rim while an upper surface of the screw retaining portion is positioned above the upper rim. The screw retaining portion has a first threaded hole, a second threaded hole and a neutral threaded hole, with the neutral hole positioned between the first and the second holes. The holes are inclined at certain orientations to allow for fixation with screws in a deficient acetabulum, and for use in a left or right hip.
    Type: Grant
    Filed: September 13, 2005
    Date of Patent: October 20, 2009
    Assignee: Wright Medical Technology, Inc.
    Inventors: Koen DeSmet, Steven F. Seyer, Anthony J. Svarczkopf
  • Patent number: 7485148
    Abstract: An acetabular component prosthesis adapted for affixation in a recess in a pelvis, comprising: a cup shell having a generally convex outer surface adapted to be in contact with the bone in use, a generally concave inner surface and a rim; at least one pair of substantially adjacent flanges extending from the outer surface of the cup at a point proximal to the rim of the cup and angled at angle ? downwardly thereto; one flange of the pair being at an equal but opposite angle ? to a plane extending across the apex of each of the flanges to the other of the pair; and at least one aperture in each of the pair of flanges through which in use fixation means may be passed to fix the cup into the recess in the pelvis.
    Type: Grant
    Filed: April 20, 2005
    Date of Patent: February 3, 2009
    Assignee: Finsbury (Development) Limited
    Inventors: Robert Michael Wozencroft, John O'Hara
  • Publication number: 20080262627
    Abstract: A unitary acetabular cup prosthesis (1) for a deficient acetabulum of a hip bone having a cup portion (10) and a pair of adjacent screw retaining members (51, 52) extending from the cup. A second pair of screw retaining members are preferably provided, with the first and second pair of screw retaining members oriented such that the prosthesis can be used in either a left or a right acetabulum of the patient. The screw retaining members may be formed on a single flange. The screw retaining members are fixedly inclined and offset relative to the rim (18) of the cup. Each screw retaining member has a threaded hole (55, 56) inclined relative to the rim such that an axis of the threaded hole converges toward the axis of the cup portion in one dimension and is oblique to the axis of the cup potion in a second dimension. A prosthesis for a deficient acetabulum of a patient having a cup portion and a flange member. The flange member has a base portion that extends upward along a portion of the upper rim.
    Type: Application
    Filed: September 13, 2005
    Publication date: October 23, 2008
    Inventors: Koen DeSmet, Steven F. Seyer, Anthony J. Svarczkopf
  • Publication number: 20080255672
    Abstract: An orthopedic implant is disclosed and can include a first component and a second component that can be installed in the first component. The orthopedic implant can further include a seal that can be installed between the first component and the second component. The seal can substantially prevent debris from the second component from migrating through the first component.
    Type: Application
    Filed: April 10, 2007
    Publication date: October 16, 2008
    Applicant: WARSAW ORTHOPEDIC, INC.
    Inventor: Carlos E. Gil
  • Publication number: 20080172130
    Abstract: A modular prosthetic acetabulum apparatus for use in reconstruction of a hip joint by placement in an acetabulum cavity has a supporting plate with a shape suitable for placement in the acetabulum cavity, an anchor cooperative with the supporting plate for adjustably positioning the supporting plate in the acetabulum cavity, a spacer locked onto the supporting plate and selectively rotatable with respect to the supporting plate, and a cup affixed within the spacer. The supporting plate has an annular internal surface cooperative and complementary to a tapered annular exterior surface of the spacer. The cup has a tapered exterior surface complementary to and cooperative with an annular tapered interior in the spacer.
    Type: Application
    Filed: February 25, 2008
    Publication date: July 17, 2008
    Inventor: Frederique Macara
  • Patent number: 7316715
    Abstract: The invention relates to a device which is used for solidly connecting an acetabular cup shell to bone using at least one screw. According to the invention, the screw passes through a hole housing a ring mounted in the shell of the acetabular cup. The ring is mounted within an aperture of the shell and can be rotated therein about the longitudinal axis of the screw. The ring is a split-ring comprising a non-circular outer profile which co-operates with the non-circular profile of the hole which is disposed in the shell. In this way, when the ring is rotated in the hole and wedged in place therein, it is constricted thereby locking the screw to the shell in the desired position. Alternately the screw can have an enlarged thread adjacent it's head end to expand an internally threaded split-ring.
    Type: Grant
    Filed: February 18, 2005
    Date of Patent: January 8, 2008
    Assignee: Howmedica Osteonics Corp.
    Inventor: Gregory E. Plaskon