Humeral Bone Patents (Class 623/19.14)
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Patent number: 8632603Abstract: A system for securing a prosthesis in a bone includes a reference anchor for insertion into a cavity of a bone to define a reference point during prosthesis implantation, the reference anchor including a body having a mating feature and a gripping projection for engaging an inner surface of the bone cavity. The system also includes a stem having a terminal end adapted to mate with the engagement feature of the reference anchor such that the stem is disposed at a desired position relative to the reference point.Type: GrantFiled: September 21, 2010Date of Patent: January 21, 2014Assignee: Tornier, Inc.Inventors: Brian C. Hodorek, Robert Courtney, Jr., Ryan Schlotterback
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Patent number: 8632598Abstract: A shoulder implant assembly constructed in accordance to one example of the present disclosure includes a frame member, a cup, and a glenosphere. The frame member can have a central hub and a first arm extending therefrom. The frame member can be configured to selectively and alternatively couple with first shoulder implant components in a traditional shoulder configuration and with second shoulder implant components in a reverse shoulder configuration. The cup can have a concave surface that is configured to articulate with a humeral head component. The cup can be selectively coupled to the frame member in the traditional shoulder configuration. The glenosphere can have an outer articulating surface that is configured to articulate with a second cup. The glenosphere can be selectively coupled to the frame member in the reverse shoulder configuration.Type: GrantFiled: March 14, 2013Date of Patent: January 21, 2014Assignee: Biomet Manufacturing, LLCInventors: John McDaniel, Benjamin Hellman
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Patent number: 8617249Abstract: A proximal humeral prosthesis includes a humeral head having a distal end and a proximal end adapted to be coupled to a glenoid cavity of a scapula; a humeral stem core having an outer surface, a distal end, and a proximal end adapted to be coupled to the distal end of the humeral head; a humeral stem graft having an inner surface adapted to be coupled to at least a portion of the outer surface of the humeral stem core, a distal end, a proximal end, and an outer surface including at least one tendon attachment site; and an intramedullary stem having a proximal end adapted to be coupled to the distal end of the humeral stem core and a distal end adapted to be coupled to at least one bone of a skeleton. The prosthesis can be rendered modular and can further include a spacer segment. Resorption of bone from the humeral stem graft can be inhibited by compression of the humeral stem graft.Type: GrantFiled: October 3, 2005Date of Patent: December 31, 2013Assignee: Zimmer, Inc.Inventor: Ali Scott Emami
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Publication number: 20130345817Abstract: A kit for use in performing joint arthroplasty, the kit including a prosthesis to be fitted to a long bone and a cutting guide. The cutting guide including a housing having an attachment mechanism adapted to couple the housing to the bone during arthroplasty and a wall defining a continuous path and a blade for cutting the bone, the blade fitting within and sliding along the continuous path such that the blade cuts the bone in a shape matching the second body articulating surface.Type: ApplicationFiled: August 29, 2013Publication date: December 26, 2013Inventors: JACK F. LONG, Clinton E. KEHRES, DAVID M. WARLOP
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Publication number: 20130325132Abstract: A trial instrument assembly for use in a surgical procedure to replace an orthopaedic joint includes a trial implant having a stem portion for fitting within a prepared cavity in the patient's bone. The stem portion defines a stem axis. A neck portion is connected to the stem portion to protrude from the cavity when the stem portion is within the cavity. The assembly includes a plane guide that extends from the neck portion in a plane that is selected from (i) a plane perpendicular to the stem axis, and (ii) a plane parallel to the stem axis, for use in determining the location of the trial implant relative to an anatomical feature in a direction measured along the stem axis or perpendicular to the stem axis, respectively.Type: ApplicationFiled: May 30, 2012Publication date: December 5, 2013Applicant: DEPUY (IRELAND)Inventors: CAROLE REIGNIER, LAURENT ZANCHIN
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Publication number: 20130325134Abstract: Trials for a reverse shoulder system are described. The trials generally include an insert housed within a humeral cup. The insert has a proximal end and a distal end, the proximal end having a concave recess therein adapted to receive a glenosphere prosthesis. The distal end of the insert includes a shaft, the shaft is substantially housed within the confines of the humeral cup. A distal end of the humeral cup is inserted in a humeral stem.Type: ApplicationFiled: February 14, 2013Publication date: December 5, 2013Applicant: HOWMEDICA OSTEONICS CORP.Inventors: David Viscardi, Koustubh Rao, Shawn Michael Kroll, Roy Splieth, James David Lorek
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Publication number: 20130325131Abstract: Disclosed herein are components of a reverse shoulder prosthesis. In an embodiment, a reverse shoulder prosthesis includes a humeral adapter tray configured to sit near a resected surface of a humerus, the humeral adapter tray comprising: a cavity; a central bore; and a distal face including a boss, the boss: (i) configured as an extension of the distal face, (ii) posteriorly offset from the central bore by at least 10 mm, and (iii) configured to engage a humeral stem; and a humeral liner comprising: a distal rim configured to sit within the cavity of the humeral adapter tray; and a concave articulating surface configured to mate with a convex articulating surface of a glenosphere. In an embodiment, the boss, in addition to being posteriorly offset, is superiorly offset from the central bore by at least 8 mm. In an embodiment, the reverse shoulder a humeral stem which engages the boss.Type: ApplicationFiled: May 30, 2013Publication date: December 5, 2013Applicant: Exactech, Inc.Inventors: Christopher Roche, Matthew Hamilton, Phong Diep
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Publication number: 20130325133Abstract: Trials for a reverse shoulder system are described. The trials generally include an insert housed within a humeral cup. The insert has a proximal end and a distal end, the proximal end having a concave recess therein adapted to receive a glenosphere prosthesis. The distal end of the insert includes a shaft, the shaft is substantially housed within the confines of the humeral cup. A distal end of the humeral cup is inserted in a humeral stem.Type: ApplicationFiled: November 28, 2012Publication date: December 5, 2013Applicant: HOWMEDICA OSTEONICS CORP.Inventors: David Viscardi, Koustubh Rao
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Patent number: 8591592Abstract: A humeral prosthesis includes a stem component and a partial humeral head component. The partial humeral head component has a configuration that is similar to the curvature of the humeral head to allow the head to reconstruct the anatomy of the damaged humerus. The stem component is threaded and cannulated and engages the partial humeral head component. The stem component is configured to be inserted within the humeral diaphyseal channel.Type: GrantFiled: May 1, 2008Date of Patent: November 26, 2013Assignee: Arthrex, Inc.Inventor: Peter J. Dreyfuss
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Patent number: 8579984Abstract: A shoulder joint repair prosthesis (12, 14) comprises a support structure which comprises anchorage points (24) which are in the installed configuration positioned adjacent positions of the anatomical tendinous insertion points of the tendons related to the joint. A securing clamp (30) arrangement connects to the anchorage points with direct rigid connection devices (32), the securing clamp arrangement having a surface area larger than the direct connection devices, the securing clamp arrangement being arranged to clamp the tendons between the securing clamp arrangement and the underlying surface area and providing a fixed gap between clamp and underlying connecting areas to trap any attached bony fragments.Type: GrantFiled: May 28, 2010Date of Patent: November 12, 2013Inventor: Keith Borowsky
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Publication number: 20130261754Abstract: A stemless humeral component for replacing the humeral head of a patient's humerus includes a support flange having a number of cantilevered legs extending distally away from a bottom surface thereof. Instruments and methods for surgically installing the stemless humeral component are also disclosed.Type: ApplicationFiled: March 14, 2013Publication date: October 3, 2013Inventors: Sarah Anthony, Didier Poncet, David M. Warlop, Laurent Zanchin, Chad Lawrence, Scott A. Lubensky, Jack F. Long, Joseph P. Iannotti, Kirk L. Jensen, Anders Ekelund
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Publication number: 20130261755Abstract: A stemless humeral component for replacing the humeral head of a patient's humerus includes a support flange having a number of cantilevered legs extending distally away from a bottom surface thereof. Instruments and methods for surgically installing the stemless humeral component are also disclosed.Type: ApplicationFiled: March 14, 2013Publication date: October 3, 2013Inventors: Sarah Anthony, Scott A. Lubensky, Didier Poncet, Chad Lawrence, David M. Warlop
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Publication number: 20130245776Abstract: A prosthesis (20) for use in performing joint arthroplasty is provided. The prosthesis (20) is to be fitted to a long bone (3). The prosthesis includes a first body (22) having a first body articulating surface (24) defining a generally circular outer periphery (26) of the first body articulating surface (24). The first body (22) has a support surface (28) opposed to the articulating surface (24). The support surface (28) is adapted to receive the head of the long bone (3). The prosthesis (20) also includes a second body (30) operably associated with the first body (22). The second body (30) has a second body articulating surface (32) extending from a portion of the circular outer periphery (26) of the first body articulating surface (24). A tool kit for preparing a humerus to receive a prosthesis is also disclosed.Type: ApplicationFiled: May 1, 2013Publication date: September 19, 2013Applicant: DePuy Synthes Products,LLCInventors: Jack F. Long, Michael E. Coon
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Patent number: 8529629Abstract: Various embodiments of the present invention are directed to a shoulder prosthesis. These embodiments may relate to a shoulder prosthesis including, for example, a humeral stem for fracture indication. Of note, certain embodiments of the present invention provide a humeral prosthesis with improved integration of the tuberosities around the humeral stem. Various methods relating to uses and applications of the prosthesis are also disclosed.Type: GrantFiled: June 29, 2009Date of Patent: September 10, 2013Assignee: Exactech, Inc.Inventors: Laurent Angibaud, Pierre-Henri Flurin
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Patent number: 8512410Abstract: A humerus implant for a reverse shoulder prosthesis has a cup shaped body and a thread at the outside of the body. The thread has a plurality of fins with cut-outs between the fins. At least one fin has an inclined leading surface which helps in incising into the bone by rotating the body in an inward direction. Furthermore, at least one fin has a forward oriented undercut trailing surface blocking rotation in the outward direction.Type: GrantFiled: January 10, 2012Date of Patent: August 20, 2013Assignee: Arthex, Inc.Inventors: Nick J. T. Metcalfe, Gerlinde Michel
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Patent number: 8506638Abstract: A prosthesis is provided and may include a central body having a longitudinal axis and a plurality of arms extending from the central body in a direction substantially perpendicular to the longitudinal axis. The plurality of arms may each include a first planar surface, a second planar surface, and a third planar surface that are each formed at an obtuse angle relative to one another to define an outer shape of the prosthesis.Type: GrantFiled: July 13, 2011Date of Patent: August 13, 2013Assignee: Biomets Manufacturing, LLCInventors: Thomas M. Vanasse, Nathan A. Winslow
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Publication number: 20130197652Abstract: A collar (2) arranged to couple to a prosthetic component for implantation at the end of a long bone, the prosthetic component having a distal portion arranged to couple to the bone and a proximal neck portion arranged to couple to an articulation component. The collar (2) comprises a plate including a neck hole (4) to receive a neck portion, such that the collar can rotate about the neck portion. The collar (2) further comprises a plurality of attachment portions (12) for coupling the plate to bone fragments or soft tissues. The collar (2) is lockable to the neck portion to prevent further rotation. A prosthesis comprising a combination of a collar (2), a prosthetic component and an articulation component, and a surgical method of using the collar (2) are also disclosed.Type: ApplicationFiled: March 29, 2011Publication date: August 1, 2013Applicant: DEPUY (IRELAND)Inventors: Anders Ekelund, Sylvain Gauthier, Laurent Lafosse, Jack Long, Robin Maisonneuve, Didier Poncet
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Publication number: 20130190882Abstract: A humeral head prosthetic device including a chassis and a head attached or attachable to the chassis. In the preferred embodiment, the chassis includes a tapered and multifaceted anchor element attached to and projecting distally from a base element, the configuration of the tapered and multifaceted anchor element adapted to counter rotation of the chassis once it is impacted into the humeral head. The preferred embodiment of humeral head prosthetic device also includes one or more blind holes each of the blind holes or slots being defined in part by a penetrable wall, each of the blind holes including a wall that may be readily penetrated in order permit insertion of a tool to aid in removal of the prosthesis where such removal is required.Type: ApplicationFiled: January 20, 2013Publication date: July 25, 2013Applicant: SHOULDER OPTIONS, INC.Inventor: Shoulder Options, Inc.
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Publication number: 20130178943Abstract: The invention relates to a device (2) for fixing a cup (3) in a bone (21), said device comprising a tubular body (17) extending along a longitudinal axis (A) between a proximal end (18) for co-operating with the cup (3) or a coupling body (9), and a distal end (19) to be fixed in the bone (21), the tubular body (17) defining an inner peripheral surface (24) and an outer peripheral surface (25) provided with screw means. The screw means extend from the proximal end (18) to an intermediate region (27) of the outer peripheral surface (25) arranged at a distance from the proximal (18) and distal (19) ends, and the inner peripheral surface (24) defines a female assembly portion (28) extending from the proximal end (18) in order to co-operate with a male assembly portion of the cup (3) or the coupling body (9).Type: ApplicationFiled: September 15, 2011Publication date: July 11, 2013Inventor: Marc Duport
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Patent number: 8460390Abstract: A trial implant system includes a stem component and an articulating component forming part of a joint of a patient. A trial mounting assembly mounts the articulating component to the stem component at variable relative angular positions. The trial mounting assembly includes an expandable ball portion and an expansion element configured to expand the ball portion upon rotation of the expansion element. In an expanded state, the ball portion contacts a cavity within the stem at three points of contact to fix the center of rotation of the ball portion at a pre-determined location within the stem. The stem cavity defines an inwardly projecting circumferential lip that bears against ball portion as it expands to ensure the three-point contact.Type: GrantFiled: December 29, 2004Date of Patent: June 11, 2013Assignee: DePuy Products, Inc.Inventors: Matthew Biss, Jack Long, Edmund Frazee
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Patent number: 8454702Abstract: A reverse modular humeral implant for implantation into a humerus that includes a natural humeral shaft and a natural humeral head. The implant includes a humeral stem implantable into the natural humeral shaft, and an adapter couplable to the humeral stem, the adapter including an anchoring projection configured to be coupled to a convex bearing.Type: GrantFiled: January 20, 2011Date of Patent: June 4, 2013Assignee: Biomet Manufacturing Corp.Inventors: Aaron Smits, Kurt Schmidt
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Patent number: 8449617Abstract: A shoulder implant assembly constructed in accordance to one example of the present disclosure includes a frame member, a cup, and a glenosphere. The frame member can have a central hub and a first arm extending therefrom. The frame member can be configured to selectively and alternatively couple with first shoulder implant components in a traditional shoulder configuration and with second shoulder implant components in a reverse shoulder configuration. The cup can have a concave surface that is configured to articulate with a humeral head component. The cup can be selectively coupled to the frame member in the traditional shoulder configuration. The glenosphere can have an outer articulating surface that is configured to articulate with a second cup. The glenosphere can be selectively coupled to the frame member in the reverse shoulder configuration.Type: GrantFiled: November 16, 2011Date of Patent: May 28, 2013Assignee: Biomet Manufacturing Corp.Inventors: John McDaniel, Benjamin Heilman
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Patent number: 8444646Abstract: A prosthesis (20) for use in performing joint arthroplasty is provided. The prosthesis (20) is to be fitted to a long bone (3). The prosthesis includes a first body (22) having a first body articulating surface (24) defining a generally circular outer periphery (26) of the first body articulating surface (24). The first body (22) has a support surface (28) opposed to the articulating surface (24). The support surface (28) is adapted to receive the head of the long bone (3). The prosthesis (20) also includes a second body (30) operably associated with the first body (22). The second body (30) has a second body articulating surface (32) extending from a portion of the circular outer periphery (26) of the first body articulating surface (24). A tool kit for preparing a humerus to receive a prosthesis is also disclosed.Type: GrantFiled: April 9, 2009Date of Patent: May 21, 2013Assignee: DePuy Products, Inc.Inventors: Jack F. Long, Michael E. Coon
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Publication number: 20130123930Abstract: The current invention appropriately places stable implants into both sides of the shoulder joint to relieve pain and restore function in an arthritic shoulder, and does so in a manner that is arthroscopic, that does not violate the muscles about the shoulder or other vital structures, and that allows for immediate active or voluntary movement by the patient after surgery.Type: ApplicationFiled: November 10, 2011Publication date: May 16, 2013Inventor: David Michael Burt
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Patent number: 8419798Abstract: A joint prosthesis includes a head component that is engaged to a bone stem through a mounting element. The mounting element is configured for articulating engagement with the stem to permit angular positioning of the head component in multiple degrees of freedom. The mounting element is fastened to the stem by a press-fit engagement and a separate mechanical fastener.Type: GrantFiled: December 30, 2003Date of Patent: April 16, 2013Assignee: DePuy Products, Inc.Inventors: Jeff Ondrla, Gerald Ross Williams, Jr., Joseph Patrick Iannotti, Paul Gibbons, James Edward Clark
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Patent number: 8409204Abstract: This method comprises the use of a repair equipment including a humeral rod (2) intended to be placed in the medullary cavity of the humerus, comprising at least one hole (6) for receiving a thread (11) for repositioning the tuberosities (101, 102) and for maintaining the latter with respect to the rest of the bone. Said hole (6) is formed in the metaphyseal portion of the humeral rod (2), in the anteroposterior direction thereof; and the repair equipment further comprises a so-called “guying” subassembly (3), to maintain the tuberosities (101, 102) when they re-installed, two second so-called “traction” subassemblies (4), for pulling of the tuberosities (101, 102) one toward the other, and two so-called third “pressing” subassemblies (5), for tackling the tuberosities (101, 102); each of these sub-assemblies comprises a needle and thread (11) connected to this needle, this thread (11) forming a loop.Type: GrantFiled: September 22, 2011Date of Patent: April 2, 2013Assignee: Compagnie Financiere et Medicale SARLInventors: Jean-Jacques Martin, Tristan Lascar, Laurent Obert
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Patent number: 8388689Abstract: A prosthesis is provided for replacing a portion of a bone making up a joint. The prosthesis is adapted, intraoperatively, to optimize the anatomical alignment of the prosthesis in the joint. In particular, a jig is used to identify the axis of rotation of the joint intraoperatively and to align a portion of the prosthesis with the identified axis. The angle of the head of the prosthesis is adjusted to optimize contact with the appropriate corresponding portions of the joint, at which point the position of the head is fixed to prevent further rotation of the head relative to the remainder of the prosthesis.Type: GrantFiled: August 6, 2010Date of Patent: March 5, 2013Assignee: Skeletal Dynamics, LLCInventors: Jorge L. Orbay, Thomas H. Norman, William Garcia de Quevedo
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Publication number: 20130053971Abstract: A humeral prosthesis includes a stem component and a head component joined by an inclination component. The inclination component is provided with an opening that is designed to accommodate a pair of expandable tabs extending from a side of a plate. The plate is also provided with a taper extending opposite to the pair of expandable tabs. Inclination angle, radial offset, and version are adjustable and are separately and independently set and fixed.Type: ApplicationFiled: October 25, 2012Publication date: February 28, 2013Inventors: Gregory A. Guederian, Zhixu Guan
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Publication number: 20130018475Abstract: A prosthesis is provided and may include a central body having a longitudinal axis and a plurality of arms extending from the central body in a direction substantially perpendicular to the longitudinal axis. The plurality of arms may each include a first planar surface, a second planar surface, and a third planar surface that are each formed at an obtuse angle relative to one another to define an outer shape of the prosthesis.Type: ApplicationFiled: July 13, 2011Publication date: January 17, 2013Applicant: BIOMET MANUFACTURING CORP.Inventors: Thomas M. Vanasse, Nathan A. Winslow
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Publication number: 20130018476Abstract: A prosthesis is provided and may include a central body having a longitudinal axis and an opening that receives an installation tool. The prosthesis may further include a plurality of arms each having a first end proximate to the central body and a second end extending from the central body in a first direction substantially perpendicular to the longitudinal axis. The second end may include a greater width than the first end measured in a second direction substantially perpendicular to the first direction.Type: ApplicationFiled: January 4, 2012Publication date: January 17, 2013Applicant: BIOMET MANUFACTURING CORP.Inventors: Nicholas J. Katrana, Nathan A. Winslow
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Publication number: 20130006369Abstract: An implant system for total shoulder arthroplasties, hemi shoulder arthroplasties, and “reverse” total shoulder arthroplasties including a humeral stem having an enlarged head portion with interfaces adapted to removably receive various modular interchangeable components, such as articulating liners, spacers, and adapter inserts. The humeral stem functions as a universal platform that may be used in either conventional or “reverse” total shoulder arthroplasties, as well as hemi shoulder arthroplasties, and may remain implanted in place during a revision in which the implant system is converted between the foregoing configurations, for example.Type: ApplicationFiled: September 14, 2012Publication date: January 3, 2013Inventors: Roy C. Wiley, Brian C. Hodorek
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Publication number: 20120330428Abstract: Described herein is an expandable shoulder trial for a reverse shoulder system including a rotatably adjustable insert housed within a humeral cup. The insert has proximal and distal ends, the proximal end having a concave recess therein adapted to receive a glenosphere prosthesis. The distal end of the insert includes a shaft, the shaft having a helical groove disposed on at least a portion thereof. A distal end of the humeral cup is inserted in a humeral stem. The humeral cup has a proximal end including a recess therein, the recess defined by a circular wall. A guide pin protrudes from the circular wall and is adapted to engage the helical groove of the insert shaft. The proximal end of the insert may rotate along an axis toward the proximal end of the humeral cup and along the same axis away from the proximal end of the humeral cup.Type: ApplicationFiled: August 20, 2012Publication date: December 27, 2012Applicant: HOWMEDICA OSTEONICS CORP.Inventors: Roy Philip Splieth, James David Lorek, Shawn Michael Kroll
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Publication number: 20120310360Abstract: A modular humeral head resurfacing implant including a head, an anchoring stem, and a modular extended articulation flange. The head includes an exterior hemispherical articulating surface defining a terminating rim, an interior concave surface opposite to the exterior articulating surface, and a first coupling mechanism proximate to the terminating rim. The anchoring stem is coupled to the interior concave surface and extends along a stem axis that extends through an axial center of the head. The articulation flange includes a second coupling mechanism configured to cooperate with the first coupling mechanism to fasten the articulation flange to the head and an outer articulating surface that is curved along substantially its entire length and is substantially flush with the exterior hemispherical articulating surface when the articulation flange is fastened to the head.Type: ApplicationFiled: August 20, 2012Publication date: December 6, 2012Applicant: BIOMET MANUFACTURING CORP.Inventors: Russell Parrott, Nathan A. Winslow
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Publication number: 20120296436Abstract: A humeral head resurfacing implant (11) that has a modulus of elasticity close to that of human cortical bone as a result of its design from an integral substrate of isotropic graphite covered completely with a reinforcing layer of dense isotropic pyrolytic carbon. A carefully engineered cruciform stem (15) extends from the axial center of a flat distal circular surface (23) of a spherical cap portion (19) of the implant head located within the confines of a surrounding skirt portion (21).Type: ApplicationFiled: June 14, 2012Publication date: November 22, 2012Applicant: ASCENSION ORTHOPEDICS, INC.Inventors: Jerome J. KLAWITTER, Robert B. MORE, Monti R. GOURLEY, Joseph P. RITZ, Evgeny G. PODNOS
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Publication number: 20120290098Abstract: A humeral head augment device for use in a modular shoulder prosthesis. The humeral head augment device has an external bearing surface with at least one surface portion that includes a radius of curvature. The radius of curvature is configured to constrain translational movement of the implanted shoulder prosthesis when the humeral head augment device is positioned within the shoulder prosthesis. The humeral head augment device also includes a coupling mechanism designed to lock the humeral head augment device to either the stem or the humeral head, thereby ensuring proper operational positioning of the device within the shoulder prosthesis and allowing the implanted shoulder prosthesis to function in a patient suffering from rotator cuff arthropathy. A shoulder prosthesis using a humeral head augment device, a method for assembling a shoulder prosthesis and method for using a humeral head augment device in a shoulder prosthesis are also disclosed.Type: ApplicationFiled: July 26, 2012Publication date: November 15, 2012Applicant: TORNIER, INC.Inventors: Austin W. Mutchler, R. Sean Churchill
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Patent number: 8308806Abstract: A first articulating member for use with a second articulating member to form a prosthesis for use in joint arthroplasty for a joint formed between adjacent first and second bones in which a bone fragment having an exterior surface has separated from the first bone is provided. The first articulating member includes an articulating portion having an articulation surface for articulation with the second articulating member and an attaching portion connected to the articulating portion for attachment to the first bone. The first articulating member also includes a fragment portion connected to at least one of the articulating portion and the insertion portion. The fragment portion includes a surface for contact with the external periphery of the bone fragment.Type: GrantFiled: January 8, 2008Date of Patent: November 13, 2012Assignee: DePuy Products, Inc.Inventors: Stuart R. Grant, Robin Maisonneuve
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Publication number: 20120265315Abstract: The present disclosure relates to a stemless shoulder prosthesis comprising a fixation device for fixing the prosthesis to a resected humerous bone, the fixation device comprising a base portion and anchoring means the base portion having a distal side adapted to contact a resection plane of the bone and a proximal side for carrying a humeral head. The anchoring means are connected to the distal side of the base portion and adapted to fix the prosthesis to the bone. The anchoring means define a central axis perpendicular to the distal side of the base portion and a free central space around the central axis.Type: ApplicationFiled: March 23, 2012Publication date: October 18, 2012Applicant: ZIMMER, GMBHInventors: Levent Kusogullari, Andrew Hopkins
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Patent number: 8277512Abstract: A modular humeral head resurfacing implant including a head, an anchoring stem, and a modular extended articulation flange. The head includes an exterior hemispherical articulating surface defining a terminating rim, an interior concave surface opposite to the exterior articulating surface, and a first coupling mechanism proximate to the terminating rim. The anchoring stem is coupled to the interior concave surface and extends along a stem axis that extends through an axial center of the head. The articulation flange includes a second coupling mechanism configured to cooperate with the first coupling mechanism to fasten the articulation flange to the head and an outer articulating surface that is curved along substantially its entire length and is substantially flush with the exterior hemispherical articulating surface when the articulation flange is fastened to the head.Type: GrantFiled: January 29, 2010Date of Patent: October 2, 2012Assignee: Biomet Manufacturing Corp.Inventors: Russell Parrott, Nathan A. Winslow
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Publication number: 20120245698Abstract: A prosthesis may include a stem, an adaptor and a head. The stem may include a longitudinal axis. The adaptor may include a first taper having a first taper axis of symmetry. The head may be rotatably supported by the adaptor and may include a semispherical articulating surface defined by a central axis of symmetry that is angled relative to the first taper axis of symmetry. The head may be coupled to the first taper and may be positionable relative to the stem through relative rotation between the head and the stem about the first taper axis of symmetry to adjust a radial offset of the head relative to the longitudinal axis of the stem. The head may be adapted to be received in a glenoid cavity of a scapula.Type: ApplicationFiled: June 7, 2012Publication date: September 27, 2012Applicant: BIOMET MANUFACTURING CORP.Inventors: Kevin T. Stone, Nicholas Michael Cordaro
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Publication number: 20120232668Abstract: A humeral prosthetic head has a non-spherical articulation surface coupled with an intermediate component connecting the head and the humerus, the intermediate component connected to the epiphysis, metaphysis, or diaphysis, or to one or more additional components connected to the humerus. The intermediate portion provides for axial and angular offset of the head with respect to a connection to the humerus, using a curvilinear tapered engagement.Type: ApplicationFiled: August 27, 2010Publication date: September 13, 2012Inventor: Joseph P. Iannotti
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Patent number: 8236059Abstract: The present teachings are directed to a modular shoulder prosthesis having an adjustable radial offset and/or angular inclination provided by relative rotation of an adapter interdisposed between the stem and the head. In one example, a shoulder prosthesis comprises a stem having a first longitudinal axis. The shoulder prosthesis can also include an adaptor including a first taper. The first taper can have a first taper axis. The shoulder prosthesis can include a head rotatably supported by the adaptor. The head can have a semi-spherical articulating surface. The head can be coupled to the first taper and can be positionable relative to the stem through rotation of the adaptor about the first taper axis for adjusting an offset of the head relative to the longitudinal axis of the stem.Type: GrantFiled: October 25, 2010Date of Patent: August 7, 2012Assignee: Biomet Manufacturing, Inc.Inventors: Kevin T. Stone, Nicholas M. Cordaro
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Patent number: 8231684Abstract: A humeral head augment device for use in a modular shoulder prosthesis. The humeral head augment device has an external bearing surface with at least one surface portion that includes a radius of curvature. The radius of curvature is configured to constrain translational movement of the implanted shoulder prosthesis when the humeral head augment device is positioned within the shoulder prosthesis. The humeral head augment device also includes a coupling mechanism designed to lock the humeral head augment device to either the stem or the humeral head, thereby ensuring proper operational positioning of the device within the shoulder prosthesis and allowing the implanted shoulder prosthesis to function in a patient suffering from rotator cuff arthropathy. A shoulder prosthesis using a humeral head augment device, a method for assembling a shoulder prosthesis and method for using a humeral head augment device in a shoulder prosthesis are also disclosed.Type: GrantFiled: March 20, 2007Date of Patent: July 31, 2012Assignee: Tornier, Inc.Inventors: Austin W. Mutchler, R. Sean Churchill
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Patent number: 8231682Abstract: A trial implant component for use in a surgical procedure for replacement of a joint between a long bone and another bone, comprises a metaphyseal part which can be located so that it extends into a cavity at the resected face of the long bone in contact with the internal wall of the cavity in the metaphyseal region, and a disk which has an essentially flat shape and which can be fitted to the metaphyseal part to provide a gauge as to the appropriate size of a head part which is to be selected according to the location of the axis of the bone relative to the edge of the resected bone.Type: GrantFiled: June 2, 2006Date of Patent: July 31, 2012Assignee: Depuy Ireland LimitedInventors: Laurent Lafosse, Julien Hee
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Publication number: 20120179263Abstract: A humerus implant for a reverse shoulder prosthesis has a cup shaped body and a thread at the outside of the body. The thread has a plurality of fins with cut-outs between the fins. At least one fin has an inclined leading surface which helps in incising into the bone by rotating the body in an inward direction. Furthermore, at least one fin has a forward oriented undercut trailing surface blocking rotation in the outward direction.Type: ApplicationFiled: January 10, 2012Publication date: July 12, 2012Inventors: Nick J.T. Metcalfe, Gerlinde Michel
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Publication number: 20120179262Abstract: A humeral component of a shoulder prosthesis encloses a stem module which has a shank and an upper shank portion with a stem support surface. A joint adapter is adapted to hold either a liner or a spherical cap. The joint adapter has an adapter support surface which interfaces with the stem support surface. Further, the stem support surface and the adapter support surface have corresponding radial arc shaped sections which allow positioning of the joint adapter against the stem module at different inclination angles. For fastening the joint adapter to the stem module, a bolt or screw is provided.Type: ApplicationFiled: January 10, 2012Publication date: July 12, 2012Inventors: Nick J.T. Metcalfe, Gerlinde Michel, Gregory A. Guederian, Peter Habermayer, Anthony A. Romeo, Stefan Krupp, Steven L. Vandermeulen, Kevin J. Gallen
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Publication number: 20120172992Abstract: An insert (1) designed for insertion into a central cavity (10) within the upper part of the prosthetic stem (13) of a shoulder prosthesis. The insert (1) is provided with at least one transverse hole (6) that is threaded or provided with an inner retaining rib or any other screw-locking means. The insert (1) is designed for locking of transverse tuberosity bone screws (4) in the same way as a cross-dowel-nut. The outer surface of the prosthetic stem (13) is provided with at least one transverse unthreaded hole (7) communicating with the central cavity (10) in order to allow a sliding passage for the bone screw (4).The insert for a prosthetic humeral head implant of an anatomical shoulder prosthesis is interchangeable with an insert for the cup-shaped humeral implant (18) of a reverse shoulder prosthesis. The insert (1) is provided with a fixation site (8) for a targeting arm.Type: ApplicationFiled: October 1, 2010Publication date: July 5, 2012Inventor: Wilko Fockens
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Patent number: 8192497Abstract: A joint prosthesis, as a replacement for a ball and socket type joint, has a head that allows for infinite dialability and/or angular orientation with respect to an implanted stem, particularly during a procedure for implanting the prosthesis. The angular orientation is positionable and fixed or locked in a set position without utilizing external or separate fasteners. An expandable conjoining member associated with the prosthesis stem receives the head and allows for the positioning thereof. The expandable conjoining member is fixed in position through expansion of the expandable conjoining member to produce a friction fit (wedging) of the expandable conjoining member within a receiving socket of the stem. Expansion of the expandable conjoining member is achieved through coupling interaction of a stem of the head with the conjoining member.Type: GrantFiled: November 9, 2009Date of Patent: June 5, 2012Assignee: DePuy Products, Inc.Inventor: Jeffrey Michael Ondrla
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Publication number: 20120130500Abstract: A medical procedure for use in connection with a patient suffering from cuff tear arthropathy is disclosed. The medial procedure includes securing a prosthetic head component having a glenoid-bearing portion and an acromion-bearing portion to a humerus of a patient so that the glenoid-bearing portion is positioned in bearing contact with a glenoid surface of a scapula of the patient. The method further includes abducting the humerus so as to move the acromion-bearing portion of the prosthetic head component into direct contact with an acromion of the patient.Type: ApplicationFiled: January 30, 2012Publication date: May 24, 2012Applicant: DePuy Products, Inc.Inventors: Brian J. Maroney, Ian A. Trail
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Patent number: 8182542Abstract: A prosthesis humeral implant has a stem including a coupling element at a proximal end thereof and a head having a coupling element at a distal portion thereof for coupling to the stem portion coupling element. The head has a bearing surface portion for articulating on a prosthetic glenoid and a base portion. A soft tissue attachment element has an L-shape with a mounting flange portion of the L-shape extending and clamped between the bearing portion and base portion. The soft tissue attachment portion has a portion extending proximally from the mounting flange portion. The soft tissue attachment element mounting portion is captured between the head bearing portion and base portion preferably by clamping or being permanently attached to one of the base or bearing portions during manufacture.Type: GrantFiled: December 22, 2009Date of Patent: May 22, 2012Assignee: Howmedica Osteonics Corp.Inventor: Michael C. Ferko
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Patent number: RE43482Abstract: A bone stabilizing apparatus includes a stem member and an extension member, the stem member having a distal end for insertion within the intramedullary canal of a human humerus and the proximal end connected to the extension member. The extension member has radially directed threaded holes either pre-formed or created after the bone stabilizing apparatus is installed into the humerus. The threaded holes allow fixation of stabilizing screws with suture posts, or a washer structure to grip the surface of the bone and/or surrounding ligaments or muscle. A prosthetic or the natural humeral head can be attached to the extension member. In a preferred embodiment a guide structure directs the drill and stabilizing screws radially through the central axis of the extension member.Type: GrantFiled: April 9, 2008Date of Patent: June 19, 2012Assignee: Nuvana Medical Innovations, LLCInventors: Edward John Mikol, Thomas John Chambers