Intermediate Bearing Cup Movable Relative To Acetabular Outer Cup Patents (Class 623/22.18)
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Patent number: 11045323Abstract: An orthopaedic joint prosthesis assembly includes a head part of an orthopaedic joint prosthesis component and an alignment guide. The head part has a spherical hearing surface for articulation with a corresponding joint surface, and an assembly surface having a first bore formed in it for receiving a spigot on another part of the orthopaedic joint prosthesis. The bore has a first axis that extends perpendicular to the assembly surface. The alignment guide has an axial portion defining a second axis and an arm extending from the axial portion. The arm includes a distal portion which is configured to engage the assembly surface, with the axial portion being arranged to engage the bearing surface of the head part when the head part is mounted within the guide such that an impaction force applied along the second axis is directed along the first axis.Type: GrantFiled: August 10, 2016Date of Patent: June 29, 2021Assignee: DePuy Ireland Unlimited CompanyInventors: Gary Moore, Alec Birkbeck, Christopher Hunt, Richard Patnelli, David Horne, Henry Prout
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Patent number: 10945849Abstract: An outer shell (1) for a joint socket implant, in particular for an acetabular implant, which comprises a convex outer face (3) and a concave inner face (4) for receiving an inner shell. The concave inner face (4) has at least partially a toothing system (7), in particular a circular circumferential region (6) thereof. Via the toothing system (7), an inhibition of the rotatability of the two shells, relative to one another, can be achieved upon insertion of the inner shell into the outer shell (1).Type: GrantFiled: November 22, 2016Date of Patent: March 16, 2021Assignee: JOSSI HOLDING AGInventors: Pascal Bürgi, Christian Gugler, Daniel Nadler
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Publication number: 20150039091Abstract: 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: ApplicationFiled: October 13, 2014Publication date: February 5, 2015Inventors: Justin D. Grostefon, Matthew T. Block
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Publication number: 20150025647Abstract: A total hip implant system comprising: a prosthetic femoral component having a head with a part-spherical bearing surface; and a dual mobility acetabular cup system comprising a first bearing component made of ultra high molecular weight polyethylene mounted on the head, the first bearing component having a part-spherical inner bearing surface rotatably engaging the part-spherical bearing surface of the head, and having a part-spherical outer bearing surface, a second bearing component made of polyetheretherketone (PEEK) having an inner part-spherical bearing surface rotatably engaging the part-spherical outer bearing surface of the first bearing surface.Type: ApplicationFiled: July 16, 2013Publication date: January 22, 2015Inventor: Zongtao Zhang
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Publication number: 20140309748Abstract: A method for performing an orthopaedic surgical procedure on an acetabulum of a patient includes the steps of securing an acetabular shell component to an acetabulum of a patient and securing a first insert to an acetabular shell component configured to be implanted within an acetabulum of a patient. The method further includes the steps of securing a second insert to the first insert such that the outer surface of the second insert contacts the inner surface of the first insert and securing a femoral head configured to be secured to a femoral stem to the second insert such that the outer surface of the femoral head contacts the inner surface of the second insert.Type: ApplicationFiled: June 25, 2014Publication date: October 16, 2014Inventors: Dustin R. Whitaker, Todd D. Render, Matthew R. Dressler
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Patent number: 8858645Abstract: 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: GrantFiled: June 21, 2012Date of Patent: October 14, 2014Assignee: DePuy Synthes Products, LLCInventors: Justin D. Grostefon, Matthew T. Block
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Publication number: 20140236303Abstract: 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: ApplicationFiled: April 29, 2014Publication date: August 21, 2014Inventor: Brian Ted MAURER
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Patent number: 8808390Abstract: A prosthetic component assembly, such as an acetabular cup, includes a shell, a bearing positioner and a bearing. The shell and bearing positioner are configured to facilitate orienting the bearing positioner in multiple orientations relative to the shell and for securing the bearing positioner in a selected orientation of the multiple orientations relative to the shell. The bearing is configured to be received in the bearing positioner at multiple rotational orientations for optimal joint biomechanics. The bearing positioner is selected from among a plurality of lateralized positioners to accommodate the joint anatomy.Type: GrantFiled: September 27, 2007Date of Patent: August 19, 2014Assignee: DePuy Synthes Products, LLCInventors: Paul Peter Lewis, James Alan Caywood
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Patent number: 8771366Abstract: 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: GrantFiled: March 30, 2012Date of Patent: July 8, 2014Assignee: DePuy Synthes Products, LLCInventors: Dustin R. Whitaker, Todd D. Render, Matthew R. Dressler
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Publication number: 20130345822Abstract: 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: ApplicationFiled: June 21, 2012Publication date: December 26, 2013Inventors: Justin D. Grostefon, Matthew T. Block
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Patent number: 8608806Abstract: The present invention provides monopolar acetabular liners (32, 54) that can enclose a femoral head (14) to form a hip replacement prosthesis (30, 50), wherein the liner (32, 54) has a rim (34) that creates an orifice, wherein the orifice has a diameter that is smaller than the diameter of the femoral head (14), and wherein the liner (32, 54) encompasses greater than 50 percent of the volume of the head (14), wherein a constraining ring (56) can be used in conjunction with the monopolar constrained acetabular liner (32, 54) to provide additional support for the femoral head (14) to stay with the acetabular liner (32, 54) and avoid dislocation. Assemblies and complete prosthetic replacements are also provided. Liners (32, 54) and constraining rings (56) having no, one or more recesses (36) also are provided.Type: GrantFiled: January 24, 2007Date of Patent: December 17, 2013Assignee: The General Hospital CorporationInventors: William H. Harris, Brian R. Burroughs, Daniel P. Hoeffel
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Publication number: 20130289734Abstract: 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: ApplicationFiled: July 2, 2013Publication date: October 31, 2013Inventor: Zafer Termanini
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Patent number: 7918895Abstract: A system for replacing a portion of a shoulder joint can include a tray having an outer surface and an inner surface. The outer surface can be adapted to engage a humeral stem. A bearing can include an outer bearing surface and an inner articulating surface. The outer bearing surface can be positioned adjacent to the tray. A ring can be selectively disposed between the tray and the bearing. The ring can define an annular body having a slit formed therein. The ring can be movable between a locked position wherein the ring retains the bearing relative to the tray and an unlocked position. A removal tool can define a proximal end and a distal end. The distal end can define a ring engaging surface and a bearing engaging surface. The ring engaging surface can be adapted to engage the ring at the slit such that the ring expands radially from the locked position away from engagement with the bearing to the unlocked position.Type: GrantFiled: September 3, 2009Date of Patent: April 5, 2011Assignee: Biomet Manufacturing Corp.Inventors: Bryce A. Isch, Jason D. Meridew, Troy W. Hershberger
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Patent number: 7833276Abstract: An acetabular prosthesis having an outer member for engaging the acetabulum. The outer member has a part-spherical bearing surface terminating in a distal rim. The rim has a contour such that the portion thereof to be located between the ischium and the pubis extends distally further from an equator of the bearing surface than the contour to be implanted between the pubis and the illium and between the ischium and the illium.Type: GrantFiled: September 9, 2004Date of Patent: November 16, 2010Assignee: Benoist Girard SASInventors: Arnaud Auxepaules, Nicolas Delogé, Patrick Raugel
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Patent number: 7780737Abstract: The invention relates to a system which is used to replace ball bone joints. The inventive system consists of: a bone anchoring shell (1) comprising a smooth articular surface (7) on the inner concave face thereof; a prosthesis (5) comprising a polished ball (4) and a neck (6) which is characterised in that it is smooth and slightly flared, in order to enable a wear-free low friction movement; and a mobile articular cup (3) which slides (i) on the ball (4) and the neck (6) of a prosthesis (5) and (ii) in the smooth cavity (7) of the bone anchoring shell (1) and which is characterised in that the opening (8) in said cup (3) tapers towards the center thereof, with an inside diameter (9) of equal to or less than that of the ball (4), such that the flared part adapts perfectly to the flared neck (6) in all of the respective positions of the mobile parts.Type: GrantFiled: August 9, 2004Date of Patent: August 24, 2010Assignees: Ortho IDInventors: Olivier Bonnard, Philippe Bauchu, Alain Cypres, Arnaud Fiquet, Philippe Girardin, Daniel Noyer, Jean-Pierre Moulin, Christophe Roy
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Patent number: 7749277Abstract: 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 contrained 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: GrantFiled: February 5, 2008Date of Patent: July 6, 2010Assignee: Smith & Nephew, Inc.Inventor: Terry W. McLean
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Publication number: 20100145466Abstract: A prosthetic joint assembly that includes a shell including an inner surface. The assembly also includes a bearing member including an outer surface. The bearing member is received by the shell such that the outer surface of the bearing member is adjacent the inner surface of the shell. Furthermore, the joint assembly includes a compressible member that is rigidly fixed to the inner surface of the shell or the outer surface of the bearing member to only cover a portion thereof. The compressible member is made of a material that is different from the shell or the bearing member.Type: ApplicationFiled: December 8, 2008Publication date: June 10, 2010Applicant: Biomet Manufacturing Corp.Inventor: W. Jason Slone
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Patent number: 7455694Abstract: A hip prosthesis has a cup element having a part-spherical inner bearing surface and a spherical center through which the plane of a diametrical equator extends, and a ball shaped head which has a diameter to cooperate with the inner bearing surface to allow movement therein. The cup has a flat cordal lower surface parallel to the plane of an equator of the ball. The inner bearing surface has two or more equally spaced extension portions which extend beyond the diametrical equator towards the mouth of the cup. The surfaces of the two or more portions are relieved to enable the ball shaped head to be inserted into the cup by moving the flat on the ball across the face of one of the bearing surface extension portions and then rotating ball head to a position in which the flat on the ball head faces the mouth of the cup.Type: GrantFiled: October 17, 2006Date of Patent: November 25, 2008Assignee: Benoist Girard SASInventors: Arnaud Aux Epaules, Jean-Pierre Brée, Nicolas Delogé
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Patent number: 7393362Abstract: A hip prosthesis has a shaft which is implantable in the femur, a ball head anchored on the shaft, a socket in which the ball head is movably supported, and a bipolar shell placed between the ball head and the socket, whereby the ball head rotates in the bipolar shell and the bipolar shell rotates in the socket.Type: GrantFiled: January 30, 2004Date of Patent: July 1, 2008Assignees: CeramTec AG, Ceramconcept Worldwide L.L.C.Inventors: Patrick Cruchet, Uwe Bunz, Bernard Masson, Paul Silberer, Martin Dietrich
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Patent number: 7335231Abstract: 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 contrained 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: GrantFiled: January 12, 2004Date of Patent: February 26, 2008Assignee: Smith & Nephew, Inc.Inventor: Terry McLean
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Patent number: 7108720Abstract: A prosthetic implant includes first, second and third components. The first component is configured to be disposed within the acetabulum. The second component is in a load bearing relationship with the first component, and is operable to rotate in a first axis of rotation. The second component is inhibited from movement in a second axis of rotation. The third component is in a load bearing relationship with the second component. The third component is operable to rotate in the second axis of rotation, but is inhibited from movement with the first axis of rotation.Type: GrantFiled: March 31, 2003Date of Patent: September 19, 2006Assignee: DePuy Products, Inc.Inventor: Mark D. Hanes
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Patent number: 6926739Abstract: A prosthesis device (1) for correct replacing of the articular surfaces of the human ankle joint comprises: a first component (2) having a spherical convex articular bearing surface (5); a second component (3) having a bearing surface (6) which has a convex shape in the frontal plane, and concave sulcus in the frontal plane; and a third component (4) located between said first and second components (2, 3) and having two surfaces (7, 8) which are complementary to and engage the upper convex and the lower concave sulcus surfaces (5, 6) to be fully congruent with the components (2, 3). The three components (2, 3, 4) can be designed from the subject-specific geometry of the ligaments (9, 10). The device (1) can move under natural muscular and ligamentous control, closely restoring that of a natural joint and maintaining uniform load distribution.Type: GrantFiled: May 12, 2000Date of Patent: August 9, 2005Assignees: Instituti Orthopedici RizzoliInventors: John J. O'Connor, Alberto Leardini, Sandro Giannini, Fabio Catani
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Publication number: 20040267375Abstract: A hip joint endoprosthesis comprises a shank, a joint ball at the upper end region of the shank, a ball socket, within which the joint ball is mounted to be rotationally movable, and a joint gap present between the joint ball and the joint socket. A liquid-filled or gas-filled rolling-contact bag is provided in the joint gap.Type: ApplicationFiled: June 22, 2004Publication date: December 30, 2004Inventor: Arno Friedrichs
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Publication number: 20040225370Abstract: The invention relates to a hip prosthesis having a shaft (1) which is implantable in the femur, and having a ball head (2) anchored on the shaft (1) by a conical clamp, for example, and having a socket (5) in which the ball head (2) is movably supported.Type: ApplicationFiled: January 30, 2004Publication date: November 11, 2004Inventors: Patrick Cruchet, Uwe Bunz, Bernard Masson, Paul Silberer, Martin Dietrich
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Publication number: 20040143341Abstract: 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 contrained 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: ApplicationFiled: January 12, 2004Publication date: July 22, 2004Inventor: Terry McLean
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Publication number: 20040122524Abstract: An orthopedic implant having diffusion-hardened surfaces employed at inner and outer load-bearing surfaces. Preferably, the orthopedic implant is a bipolar hip prosthetic device and system where a coating of oxidized zirconium is formed at the articulating, load-bearing surface of the acetabular component and at the articulating, load-bearing surface of the femoral head. The acetabular component has a polymeric cup, made from a bio-compatible material, such as UHMWPE.Type: ApplicationFiled: December 18, 2002Publication date: June 24, 2004Applicant: Smith & Nephew, Inc.Inventors: Gordon Hunter, Jeffrey E. Schryver, Steve Miller