Including Acetabular Cup And Femoral Head Patents (Class 623/22.15)
  • Patent number: 10245150
    Abstract: In one embodiment a method of implanting a prosthetic includes implanting a first member including a concave articulation surface portion defined by a first radius of curvature in a first bone, implanting in a second bone a second member including a first convex articulation surface portion defined by a second radius of curvature and a second convex articulation surface defined by a third radius of curvature, wherein the second convex articulation surface is defined by the lemon portion of a spindle torus and each of the second radius of curvature and the third radius of curvature has a length that is different from the length of the first radius of curvature by less than 0.05 millimeters and wherein the origin of the second radius of curvature is not coincident with the origin of the third radius of curvature, and bringing the first member into slidable contact with the second member.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: April 2, 2019
    Assignee: DePuy Synthes Products, Inc.
    Inventors: Edmund W. Frazee, Craig N. Ernsberger
  • Patent number: 10166108
    Abstract: A bufferable femoral implant includes a metallic main body, and an elastomer member integrally formed or connected to a lower portion of the metallic main body, whereby when an external force acts upon the femoral implant as implanted in a patient's femur, the elastomer member as packed within the medullary cavity in the femur will bufferably dampen such an external force for safely protecting the patient's femur, the femoral implant and the related hip bones.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: January 1, 2019
    Assignee: Paonan Biotech Co., Ltd.
    Inventor: Chung-Chun Yeh
  • Patent number: 10111754
    Abstract: A trial liner system for use in hip arthroplasty. The liner system includes a first trial liner having a generally convex outer surface and a generally concave inner surface, the generally concave inner surface having a first locking mechanism. The liner also includes a second trial liner having a generally convex outer surface and a generally concave inner surface The generally convex outer surface includes a second locking mechanism adapted to lock with the first locking mechanism of the first trial liner when the second trial liner is inserted into the first trial liner.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: October 30, 2018
    Assignee: DEPUY IRELAND UNLIMITED COMPANY
    Inventor: Chad Sirvane McAlexander
  • Patent number: 10034758
    Abstract: A two piece humeral component for use in joint arthroplasty which is adapted to be implanted into a joint and engaged by a socket component of the joint. The joint component includes a body having a first articulating surface and a second medial surface opposite the first articulating surface. The first articulating surface is adapted to be engaged by the socket and the second medial surface is adapted to be secured to mounting portion. The mounting portion has a first surface and a second medial surface. The first surface is adapted to be fixably engaged to the second mounting portion of the humeral component. The second medial surface is adapted to be secured to the humerus. A peg which has a first end adapted to engage a cavity found in the humerus is disposed on the mounting portion's second medial surface.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: July 31, 2018
    Assignee: Biomet Manufacturing, LLC
    Inventors: Nathan A. Winslow, Russell F. Warren, Donald H. Lee, Kevin T. Stone, Nicholas M. Cordaro
  • Patent number: 9962262
    Abstract: A orthopedic implant comprises an acetabular cup and a wireless communication device. The wireless communication device is coupled to a rim surface of the acetabular cup. In one embodiment, a recess is defined in the rim surface and the wireless communication device is positioned therein. In another embodiment, the wireless communication device is positioned in an annular ring formed of a biocompatible material. The annular ring is coupled to the rim surface of the acetabular cup. The wireless communication device may be, for example, a radio frequency identification (RFID) tag or device.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: May 8, 2018
    Assignee: DePuy Synthes Products, Inc.
    Inventor: Edward J. Caylor, III
  • Patent number: 9872771
    Abstract: The invention reduces wear in total joint articulations by modifications of the shape of either component of the kinematic pair, so as to result in an annular surface contact between the two components. Fluid trapped between the two components within the inner contour of the annular contact area is pressurized under load due to elastic deformation of the components and exuded out through inter-articular gap over the surface of contact, aiding in lubrication and reducing the wear. Reduced to practice for a total hip joint with UHMWPE-metal pair, the wear rate tested in a hip joint simulator up to five million cycles was reduced by factor seven to fifteen compared to conventionally shaped components.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: January 23, 2018
    Assignee: Scyon Orthopaedics AG
    Inventor: Slobodan Tepic
  • Patent number: 9561111
    Abstract: Captured element shoulder joint implant may be configured with a captured humeral ball; in a reverse shoulder configuration; to have a barrel- or disc-like humeral head to recessed glenoid articulation; and so forth. Multi-point fixation glenoid component may be provided. A humeral implant may have a universal joint connection, which can be mounted to or in a humeral bone and provide for a center of movement generally within a volume defined by an upper head of a normal humerus.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: February 7, 2017
    Inventor: Floyd G. Goodman
  • Patent number: 9398959
    Abstract: A variable angle locking system having a humeral component with an underside at least partially defined by a cavity. A humeral stem is couplable to the humeral component and the system has a first washer defining a first through-hole and including a threaded portion. The system has an adaptor defining a second through-hole and having a shelf portion and an elongated second washer, the shelf portion being adapted to be received by the cavity of the humeral component. A spring washer is positioned between the first washer and the elongated second washer and defining a third through-hole. A screw is configured to lock the humeral component to the humeral stem at more than one angle relative to a common axis defined by the first, second and third through-holes. The screw includes a head portion having helical threads and an elongated shaft portion extending from the head portion.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: July 26, 2016
    Assignee: Biomet Manufacturing, LLC
    Inventors: Bryce A. Isch, Nicholas J. Katrana, Nathan A. Winslow
  • Patent number: 9370427
    Abstract: A femoral stem for canines or humans is made bone-compliant by use of a thick sintered titanium body in a proximal bone contacting region and a polymeric or ceramic body in a distal bone contacting region of the femoral stem. An elastic modulus is thereby engineered to match that of bone tissue. The porous sintered titanium body is created by sintering spheres of titanium. It is bonded to a central solid biocompatible metallic body by diffusion bonding. The distal region has a biocompatible polymeric body or biocompatible cement body. When compression molded the distal region develops an elastic modulus matching that of bone tissue. The proximal region has a porosity designed to encourage bone ingrowth.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: June 21, 2016
    Inventor: Christopher G. Sidebotham
  • Patent number: 9308093
    Abstract: A hip implant having two distinct bodies, a neck body and a bone fixation body. The neck body is formed from a solid metal and has an interface for connecting to a femoral ball. The bone fixation body has an elongated shape and is formed as a porous structure that is inserted into an intramedullary canal of a patient.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: April 12, 2016
    Inventor: Philip Scott Lyren
  • Patent number: 9283017
    Abstract: A shroud for protecting exterior portions of a prosthetic implant from adhesive and a method for utilizing the same. The shroud includes a hub, a rim, and at least one bridge connecting the hub and the rim. The rim of the shroud may be sized to cover substantially the same area as a guard of the implant. The method of utilizing the shroud involves securing the shroud to the prosthetic implant. A quantity of adhesive is provided, and the prosthetic implant is secured thereto. The shroud is removed from the implant, and then the guard is secured to the implant.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: March 15, 2016
    Assignee: Zimmer, Inc.
    Inventors: Ryan T Ward, Mark A Wise
  • Patent number: 9173983
    Abstract: A method of forming a surface structure of a component of a medical devices includes forming a fatigue-resistant portion, which entails forming a first layer comprising a transition metal selected from the group consisting of Ta, Nb, Mo, V, Mn, Fe, Cr, Co, Ni, Cu, and Si on at least a portion of a surface of the component, where the surface comprises a nickel-titanium alloy, and alloying the transition metal of the first layer with the nickel-titanium alloy of the surface. The method further includes forming a rough outer surface of the fatigue-resistant portion where the rough outer surface is adapted for adhesion of a material thereto.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: November 3, 2015
    Assignee: Cook Medical Technologies LLC
    Inventors: Steven J Charlebois, William Kurt Dierking, David E. Orr
  • Patent number: 9119724
    Abstract: A reverse hip prosthesis comprising an acetabular cup for implanting in a previously implanted acetabular cup. The acetabular cup is secured to the previously implanted acetabular cup using an o-ring. The acetabular cup has a stem extending from the center of a concave portion thereof and an acetabular ball is attached to the stem, preferably by means of a Morse taper. A femoral implant is provided with a femoral cup attached to the proximal end thereof. The femoral cup has a stem which can be constructed in a modular fashion with several stem lengths in order to accommodate the various sizing requirements of different patients. After implantation of the acetabular cup and ball and the femoral cup, the members are assembled together so that the femoral cup can articulate on the acetabular ball.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: September 1, 2015
    Assignee: Hip Innovation Technology LLC
    Inventor: Zafer Termanini
  • Patent number: 9023112
    Abstract: A prosthetic hip joint comprising: (a) a femoral component including a femoral head; and, (b) an acetabular component including an acetabular cup and an acetabular cup insert, the acetabular cup insert sized to receive the femoral head, where the femoral head is sized to have a spherical center that matches a spherical center of a patient's native femoral head, where the acetabular cup is sized to have a cavity with a spherical center that matches a spherical center of a cavity of a patient's native acetabulum and, where the femoral head center of the femoral component is concentric with the center of the cavity of the acetabular cup.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: May 5, 2015
    Assignee: Depuy (Ireland)
    Inventor: Richard D. Komistek
  • Patent number: 8992627
    Abstract: A reverse hip prosthesis comprising an acetabular cup for implanting in an acetabular socket. The acetabular cup is secured to the acetabular socket. The acetabular cup has a stem extending from the center of a concave portion thereof and an acetabular ball is attached to the stem. A femoral implant has a femoral cup attached to the proximal end thereof. The femoral cup has a stem which can be made with several stem lengths in order to accommodate the various sizing requirements of patients. After implantation of the acetabular cup and ball and the femoral cup, the members are assembled together so that the femoral cup can articulate on the acetabular ball. The prosthesis of the invention has a wide range of motion and substantially improved tribology.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: March 31, 2015
    Assignee: Hip Innovation Technology LLC
    Inventor: Zafer Termanini
  • Patent number: 8979938
    Abstract: An artificial joint associated with an implant having a pair of three dimensional and structurally extending bones, each defining a contoured and opposing end face and collectively defining a joint location. A plasticized layer is applied to an end face of each bone and coacts in substantially frictional reducing fashion with an opposing end face of a further selected bone. The plasticized layer further includes at least a plurality of projecting contact locations, between which are defined a network of valleys for receiving, supporting, and distributing a lubricant across a surface area associated with the layer.
    Type: Grant
    Filed: November 7, 2008
    Date of Patent: March 17, 2015
    Assignee: Linares Medical Devices, LLC
    Inventor: Miguel A. Linares
  • Patent number: 8945233
    Abstract: The present invention relates to a method of treating a hip joint of a human patient by providing at least one hip joint surface, said hip joint comprising a caput femur and an acetabulum, said method comprising the steps of: cutting the skin of said human patient, dissecting an area of the pelvic bone on the opposite side from said acetabulum, creating a hole in said dissected area, said hole passing through said pelvic bone and into said hip joint of said human patient, and providing at least one hip joint surface to said hip joint, through said hole in said pelvic bone of said human patient.
    Type: Grant
    Filed: July 12, 2010
    Date of Patent: February 3, 2015
    Inventor: Peter Forsell
  • Publication number: 20150005887
    Abstract: A joint prosthesis including a first component having a cleaned silicon carbide layer, and an annealed graphs layer disposed on the cleaned silicon carbide layer, the annealed graphene layer being a contact layer interfacing a second component of the joint prosthesis, wherein at least one of the first component and the second component is moveable with respect to the other component
    Type: Application
    Filed: June 30, 2013
    Publication date: January 1, 2015
    Inventors: CHRISTOS D. DIMITRAKOPOULOS, JAMES J. WYNNE
  • Patent number: 8920510
    Abstract: A medical device for implantation in a hip joint of a patient is provided. The medical device comprises a first and second piece and a releasing member adapted to, in a first state hold the first piece attached to the second piece, and in a second state release the first piece from the second piece. The releasing member is adapted to change from the first state to the second state when a pre-determined strain is placed on the releasing member.
    Type: Grant
    Filed: July 12, 2010
    Date of Patent: December 30, 2014
    Inventor: Peter Forsell
  • Publication number: 20140350690
    Abstract: Methods and apparatus of the present invention provide for orthopaedic replacement of the hip while substantially preserving muscles and soft tissues around the hip joint resulting in reduced healing time and decreased risk of dislocation following the procedure. In an exemplary embodiment, an intramedullary rod 1502 is inserted longitudinally into the femur. A prosthetic femoral neck 3102 is then inserted from a point along the side of the patient's body and into the side of the femur and through a pre-existing lateral bore in the intramedullary rod 1502 and through the remainder of the femur to join the prosthetic femoral head 1102. The methods and apparatus include structures and techniques for fixing the prosthetic femoral neck 3102 in relation to the intramedullary rod 1502.
    Type: Application
    Filed: August 5, 2014
    Publication date: November 27, 2014
    Inventor: Anatol Podolsky
  • Patent number: 8894716
    Abstract: A method of orienting a femoral head member of an implant relative to an acetabular member positioned in the acetabulum including implanting a femoral stem of an implant within an intramedullary canal of a femur, inserting an acetabular member in the acetabulum, positioning a femoral head member of the implant at least partially in the acetabular member with the femoral head member including a curved articulating surface and a plurality of indicia on the curved articulating surface, and orienting the femoral head member relative to the acetabular member and generally aligning one of the indicia on the curved articulating surface with an alignment feature of the acetabular member to signify an orientation of the femoral head member relative to the acetabular member.
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: November 25, 2014
    Assignee: Smith & Nephew, Inc.
    Inventors: Stephen McMahon, Charles Wayne Allen, David C. Kelman
  • Patent number: 8882849
    Abstract: An acetabular cup includes an articular insert (1) having a substantially semi-spherical articular cavity (1c), and a spherical head (2) engaged in the articular cavity (1c). A retaining device (10a) opposes the axial release (4) of the spherical head (2) from the articular cavity (1c) of the articular insert (1). For example, the retaining device can take the form of a back-tapered segment (10a) of the articular insert (1). The spherical head (2) is factory mounted in the articular insert (1), by temporarily heating the articular insert (1) and performing sterilization after assembly. In this way, the spherical head (2) retention capacity in the articular insert (1) is increased substantially in order to reduce the risk of luxation.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: November 11, 2014
    Assignee: Inventorio SA
    Inventor: Thomas Gradel
  • Patent number: 8871131
    Abstract: Provided are processes comprising crosslinking polyethylene or using crosslinked polyethylene. Furthermore, the processes may include compacting and/or sintering the polyethylene. The polyethylene can comprise virgin ultrahigh molecular weight polyethylene having a weight average molecular weight of at least 1,000,000 g/mol, to provide a compacted composition comprising virgin ultrahigh molecular weight polyethylene.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: October 28, 2014
    Assignee: Smith and Nephew Orthopaedics AG
    Inventors: Hans Schmotzer, Yvo Dirix, Paul Smith, Theo Tervoort, Lorenz Brunner
  • Publication number: 20140316532
    Abstract: A prosthesis (2) comprising: a first component (4) formed from a fibre reinforced polymer material and having a bearing surface; and a second component (6), the second component being adapted to articulate with the bearing surface of the first component (4), wherein a surface treatment is applied to at least a portion of the bearing surface of the second component (6) to form a wear-resistant surface.
    Type: Application
    Filed: November 13, 2012
    Publication date: October 23, 2014
    Applicant: BIOMET UK HEALTHCARE LIMITED
    Inventors: Robert John Andrew Bigsby, Mohammed Imran Khan
  • Patent number: 8858645
    Abstract: An acetabular hip implant includes an acetabular shell component having a first feature and a first insert having a second feature that cooperates with the first feature of the acetabular shell component and further includes a third feature. The implant further includes a second insert having a fourth feature that cooperates with the third feature of the first insert and further includes a fifth feature. A femoral head component includes a sixth feature that cooperates with the fifth feature. Interaction between the first and second features, between the third and fourth features, and between the fifth and sixth features mechanically constrains the acetabular hip implant to prevent dislocation of the femoral head during rotation.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: October 14, 2014
    Assignee: DePuy Synthes Products, LLC
    Inventors: Justin D. Grostefon, Matthew T. Block
  • Patent number: 8852287
    Abstract: In a femoral head cap implant having a cup-shaped cap component and a pin fixed to its concave inner surface, a pick-up coil is arranged in the latter, each respective terminal of the same being connected to a tissue electrode. One tissue electrode comprises a cap component, the other an electrode provided insulated on the pin or on at least one part of the pin which is electrically insulated from the cap component. By inducing a low-frequency alternating current in the pick-up coil by means of an external coil, this low-frequency alternating current flows from the two tissue electrodes through the femoral head bone provided with the implant, thereby promoting the maintenance of its vitality.
    Type: Grant
    Filed: May 10, 2005
    Date of Patent: October 7, 2014
    Assignee: Neue Magnetodyn G.m.b.H
    Inventors: Werner Kraus, Christian Kraus-Von Wesendonk, Heribert Stephan
  • Publication number: 20140296991
    Abstract: A joint implant assembly including a spherical shaped component adapted to securing to an end of a first joint defining bone and a recess shaped component adapted to securing to an end of a second joint defining bone. Each of the components establishes an opposing wear surface, at which microscopic sized particles build up over time resulting from prolonged use of the joint. At least one of the spherical and recess shaped components exhibits a plurality of interior entrapment chambers, each of which including a narrow-most entranceway location communicating with the wear surface. The entrapment chambers further exhibit outwardly widening capture profiles extending within the associated component for securing volumes of the microscopic particles away from a zone defined between the wear surfaces.
    Type: Application
    Filed: May 21, 2014
    Publication date: October 2, 2014
    Applicant: Linares Medical Devices, LLC
    Inventors: MIGUEL A. LINARES, Miguel A. Linares, JR., Ryan T. Greene
  • Patent number: 8840676
    Abstract: A prosthesis trial system includes at least one head member having an outer surface and a cavity configured to mate with an exterior surface of a stem member. The prosthesis trial system further includes at least one shell member having an inner surface configured to mate with the outer surface of the at least one head member.
    Type: Grant
    Filed: May 7, 2010
    Date of Patent: September 23, 2014
    Assignee: Smith & Nephew, Inc.
    Inventors: Kevin W. Belew, James C. Gatewood, Luke A. Gibson
  • Publication number: 20140277557
    Abstract: An orthopaedic prosthesis for use in a hip replacement surgery includes an implantable stem component. The implantable stem component includes a core and a shell extending over the core. The shell includes a polymeric material and is configured to receive a femoral head component. Metal foam may extend over a portion of the shell.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Inventors: John M. Armacost, Ryan C. Keefer, Jeffrey A. McAnelly
  • Patent number: 8828088
    Abstract: A layer applied to a joint defined surface including a general mat shape body exhibiting a plurality of recesses, such that abrading contact with an opposing joint surface creates debris which are entrapped within the recesses during a normal range of motion. The body can further exhibit a first harder plastic substratum and a second softer plastic surface. The recesses further incorporate undercut defined patterns selected from any of circular, linear and arcuate designs.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: September 9, 2014
    Assignee: Linares Medical Devices, LLC
    Inventor: Miguel A. Linares
  • Publication number: 20140228966
    Abstract: Disclosed is a bearing liner engageable within a shell member with an integrated projection portion. The integrated projection portion may deform a selected amount during positioning of the bearing liner within the shell. The shell may include a complementary engaging portion.
    Type: Application
    Filed: February 8, 2013
    Publication date: August 14, 2014
    Applicant: BIOMET MANUFACTURING CORPORATION
    Inventor: Aaron P. SMITH
  • Patent number: 8790412
    Abstract: Methods, systems and devices for preventing prosthetic articulating surfaces from separating from each other. A containment system according to one embodiment seeks to prevent an implant stem head from dislocating from a prosthetic component while providing an increased range of motion over conventional constrained components. In one embodiment, an implant structural member includes a cavity and an opening having a lip, including a web along a portion of the lip. An implant stem head has a cooperating surface that corresponds with the web, so that when the cooperating surface of the implant stem head is aligned with the web, the head may be inserted into the implant structural member. The implant stem head is then rotated and the femoral stem component attached, thereby preventing dislocation of the head.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: July 29, 2014
    Assignee: Smith & Nephew, Inc.
    Inventor: Terry McLean
  • Patent number: 8771366
    Abstract: An acetabular hip implant includes an acetabular shell component, a first insert secured to the acetabular shell component, a second insert secured to the first insert, and a femoral head configured to be secured to the second insert. The first insert is permitted to rotate relative to the acetabular shell about a first axis, the second insert is permitted to rotate relative to the first insert about a second axis, and the femoral head is permitted to rotate relative to the second insert about a third axis.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: July 8, 2014
    Assignee: DePuy Synthes Products, LLC
    Inventors: Dustin R. Whitaker, Todd D. Render, Matthew R. Dressler
  • Patent number: 8771362
    Abstract: A variable angle locking system comprising a humeral component having an underside at least partially defined by a cavity; a humeral stem couplable to the humeral component; a first washer defining a first through-hole and including a threaded portion; an adaptor defining a second through-hole and having a shelf portion and an elongated second washer, the shelf portion being adapted to be received by the cavity of the humeral component; a spring washer positioned between the first washer and the elongated second washer and defining a third through-hole; and a screw configured to lock the humeral component to the humeral stem at more than one angle relative to a common axis defined by the first, second and third through-holes, the screw including a head portion having helical threads and an elongated shaft portion extending from the head portion.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: July 8, 2014
    Assignee: Biomet Manufacturing, LLC
    Inventors: Bryce A. Isch, Nicholas J. Katrana, Nathan A Winslow
  • Publication number: 20140188240
    Abstract: This application relates to hip replacement systems and methods. Disclosed include patient-adapted (patient-specific or patient-engineered) hip replacement systems including patient-adapted implants and patient-adapted surgical instrumentation. Related methods of making and using the systems are also disclosed.
    Type: Application
    Filed: March 15, 2013
    Publication date: July 3, 2014
    Applicant: CONFORMIS, INC.
    Inventors: Philipp Lang, John Slamin, Bruce Khalili
  • Patent number: 8747481
    Abstract: Embodiments relate to a joint replacement device, including a fixed socket including an inner surface and an outer surface supporting a ball, an articulating socket including an inner surface and an outer surface the inner surface in contact with the ball and a stem component attached to the outer surface of the articulating socket. The inner surface of the articulating socket articulates with the ball and the outer surface of the articulating socket can articulate with the inner surface of the fixed socket.
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: June 10, 2014
    Inventor: Brian Ted Maurer
  • Patent number: 8728379
    Abstract: The present invention relates to methods for making oxidation resistant medical devices that comprise polymeric materials, for example, ultra-high molecular weight polyethylene (UHMWPE). The invention also provides methods of making antioxidant-doped medical implants, for example, doping of medical devices containing cross-linked UHMWPE with vitamin E by diffusion and materials used therein.
    Type: Grant
    Filed: September 15, 2010
    Date of Patent: May 20, 2014
    Assignees: The General Hospital Corporation, Cambridge Polymer Group, Inc.
    Inventors: Orhun K. Muratoglu, Stephen H. Spiegelberg
  • Patent number: 8715364
    Abstract: A joint prosthesis device comprises a head configured to fit within a cup. The cup includes a concave cup surface defined by at least one radius of curvature RC. The head includes a convex head surface defined by at least one radius of curvature RH. The convex head surface is configured to engage the concave cup surface. The convex head surface provides an articulation zone where the head surface engages the cup surface. RC differs from RH in the articulation zone by a first amount. The convex head surface also provide a peripheral zone outside of the articulation zone. RC differs from RH in the peripheral zone by a second amount that is greater than the first amount. The peripheral zone generally extends over an area subtended by a minimum angle having a vertex at a center of the head.
    Type: Grant
    Filed: February 5, 2007
    Date of Patent: May 6, 2014
    Assignee: DePuy Synthes Products, LLC
    Inventor: Craig N. Ernsberger
  • Patent number: 8702804
    Abstract: The present teachings are directed to a shoulder prosthesis having an adjustable radial offset and/or angular inclination provided by relative rotation of an adapter interdisposed between a stem and a head. In one example, a prosthesis has a stem having a first longitudinal axis. The prosthesis can also include an adaptor including a first taper. The first taper can have a first taper axis. The prosthesis can include a head supported by the adaptor. The head can be selectively oriented and then coupled to the first taper and the combination can be selectively orientated and the coupled to the stem.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: April 22, 2014
    Assignee: Biomet Manufacturing, LLC
    Inventors: Aaron P. Smith, Kevin T. Stone, Nicholas Cordaro
  • Publication number: 20140094926
    Abstract: A femoral prosthesis for use during performance of a hip replacement procedure includes a plurality of femoral stem components in a range of various sizes and a plurality of femoral head component in a range of various sizes. The anterior/posterior stem taper angle of the femoral stem component varies across its range of sizes.
    Type: Application
    Filed: September 28, 2012
    Publication date: April 3, 2014
    Inventor: Daniel N. Huff
  • Publication number: 20140088720
    Abstract: Prosthetic artificial joints are described, including hip, knee and shoulder joints.
    Type: Application
    Filed: October 24, 2012
    Publication date: March 27, 2014
    Applicant: ELWHA LLC
    Inventors: Edward S. Boyden, Gregory J. Della Rocca, Daniel Hawkins, Roderick A. Hyde, Robert Langer, Eric C. Leuthardt, Terence Myckatyn, Parag Jitendra Parikh, Dennis J. Rivet, Joshua S. Shimony, Michael A. Smith, Clarence T. Tegreene
  • Publication number: 20140031948
    Abstract: A prosthesis including a hemiarthroplasty cup including an inner surface shaped and sized to accommodate a reamed or unreamed femoral head outer surface, and an outer surface shaped and sized to accommodate a reamed or unreamed acetabulum outer surface of an acetabulum socket, wherein the hemiarthroplasty cup is configured to maintain allowance of articulation of the femoral head outer surface and the acetabulum socket relative to the hemiarthroplasty cup after implantation.
    Type: Application
    Filed: July 17, 2013
    Publication date: January 30, 2014
    Inventor: Patrick M. Birmingham
  • Publication number: 20140025178
    Abstract: A reverse hip prosthesis comprising an acetabular cup for implanting in an acetabular socket. The acetabular cup is secured to the acetabular socket. The acetabular cup has a stem extending from the center of a concave portion thereof and an acetabular ball is attached to the stem. A femoral implant has a femoral cup attached to the proximal end thereof. The femoral cup has a stem which can be made with several stem lengths in order to accommodate the various sizing requirements of patients. After implantation of the acetabular cup and ball and the femoral cup, the members are assembled together so that the femoral cup can articulate on the acetabular ball. The prosthesis of the invention has a wide range of motion and substantially improved tribology.
    Type: Application
    Filed: August 22, 2013
    Publication date: January 23, 2014
    Applicant: Hip Innovation Technology LLC
    Inventor: Zafer Termanini
  • Publication number: 20140018932
    Abstract: A method of orienting a femoral head member of an implant relative to an acetabular member positioned in the acetabulum including implanting a femoral stem of an implant within an intramedullary canal of a femur, inserting an acetabular member in the acetabulum, positioning a femoral head member of the implant at least partially in the acetabular member with the femoral head member including a curved articulating surface and a plurality of indicia on the curved articulating surface, and orienting the femoral head member relative to the acetabular member and generally aligning one of the indicia on the curved articulating surface with an alignment feature of the acetabular member to signify an orientation of the femoral head member relative to the acetabular member.
    Type: Application
    Filed: July 3, 2013
    Publication date: January 16, 2014
    Inventors: Stephen McMahon, Charles Wayne Allen, David C. Kelman
  • Publication number: 20130325139
    Abstract: An orthopedic instrument comprises a shell configured to be inserted into a cup-shaped site, a liner configured to be received within a cavity of the shell, wherein the liner has an aperture and a mating feature adjacent to the aperture, and a modular screw configured to be received within the aperture of the liner. The modular screw can include a first component that is positionable adjacent to a first side of the mating feature and a second component that is positionable adjacent to a second side of the mating feature. When assembled, the modular screw can be configured to rotate relative to the liner.
    Type: Application
    Filed: May 29, 2012
    Publication date: December 5, 2013
    Applicant: Zimmer, Inc.
    Inventors: Andrew J. Steiner, Walter W. Thomas, Christopher J. Holt
  • Patent number: 8568487
    Abstract: A patient-specific acetabular resection guide includes a dome-shaped surface bounded by a periphery. The dome-shaped surface is a three-dimensional patient-specific surface designed to anatomically match and be received into an acetabulum of the patient, based on a three-dimensional image of a hip joint of the patient reconstructed from a medical scan of the hip joint. The resection guide includes a plurality of guiding formations defined on the resection guide and having patient-specific shapes and orientations for guiding corresponding osteotomies relative to the acetabulum for correcting hip dysplasia.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: October 29, 2013
    Assignee: Biomet Manufacturing, LLC
    Inventors: Tyler D. Witt, Jason D. Meridew, John R. White, Troy W. Hershberger, Robert Metzger
  • Patent number: 8556981
    Abstract: An implant having a porous tissue ingrowth structure and a bearing support structure is disclosed. The implant includes a metal insert having a bone ingrowth structure, an intermediate structure and a bearing support structure. A bearing surface is formed from a polymer material and attached to the bearing support structure. The intermediate structure has a porosity sufficient to inhibit the polymer material from translating through the bearing support structure to the bone ingrowth structure.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: October 15, 2013
    Assignee: Howmedica Osteonics Corp.
    Inventors: Eric Jones, Christopher J. Sutcliffe, Robin Stamp
  • Patent number: 8540779
    Abstract: A reverse hip prosthesis comprising an acetabular cup for implanting in an acetabular socket. The acetabular cup is secured to the acetabular socket of the pelvis using fasteners. The acetabular cup has a stem extending from the center of a concave portion thereof and an acetabular ball is attached to the stem, preferably by means of a Morse taper. A femoral implant is provided with a femoral cup attached to the proximal end thereof. The femoral cup has a stem which can be constructed in a modular fashion with several stem lengths in order to accommodate the various sizing requirements of different patients. After implantation of the acetabular cup and ball and the femoral cup, the members are assembled together so that the femoral cup can articulate on the acetabular ball. The prosthesis of the invention has a wide range of motion and substantially improved tribology.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: September 24, 2013
    Assignee: Hip Innovation Technology LLC
    Inventor: Zafer Termanini
  • Patent number: 8465549
    Abstract: A prosthetic hip implant system includes a prosthetic femoral component having a stem portion, a neck portion coupled to the stem portion and a part-spherical head coupled to the neck portion. An acetabular component is provided which has a housing, the housing having a part-spherical inner surface having an open end with a circumferential rim portion. The rim portion has a circumferential radially inwardly extending flange. A bearing element is mounted within the housing and has a part-spherical first outer surface region engaging the part-spherical inner surface of the housing. The part-spherical first outer surface region extends at a first radius from a center. The bearing element has a second part-spherical outer surface region extending a distance from the center less than the first radius to form a stop surface for contacting the rim.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: June 18, 2013
    Inventor: Rodney Ian Walter Richardson
  • Patent number: 8449621
    Abstract: A ready-for-use polymer cement spacer device for the replacement of a permanent joint prosthesis during a two-stage replacement, includes a shank includes for attachment for placing to the supporting bone and a head in the joint region. The spacer device includes two complementary members incorporating rigid members for assembly between them, the first member being loaded with a first active substance and the second member being loaded with a second active substance. The first and second active substances are preferably antibiotics, selected from gentamycin, trobamycin, vancomycin, erythromycin, fucidin, tetracycline or other suitable antibiotics. The temporary joint implant maintains a suitable space for the time necessary for the operation of replacing a permanent prosthesis to prevent tissues from occupying the space released by removal of the permanent prosthesis and ensures effective treatment of resistant infections by local treatment of the joint area through at least two different active substances.
    Type: Grant
    Filed: March 2, 2007
    Date of Patent: May 28, 2013
    Assignee: Teknimed
    Inventors: Alain Leonard, Claudine Lavergne, Jean-fran├žois Oglaza