Combined With Surgical Tool Patents (Class 623/22.12)
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Patent number: 8444653Abstract: A system for implanting a prosthetic device with an opening into a bone includes a plug that is removably received within the opening of the prosthetic device. The system also includes a bone removal tool that advances into the bone from outside the bone and that removes a portion of the bone while advancing into the bone to reveal the plug. The bone removal tool includes a plug engaging portion that engages with the plug. The bone removal tool at least partially removes the plug from the opening of the prosthetic device while engaged with the plug. Moreover, the system includes an alignment system that detects whether the bone removal tool and the plug are substantially axially aligned.Type: GrantFiled: August 30, 2010Date of Patent: May 21, 2013Assignee: Biomet Manufacturing Corp.Inventors: Jeffrey H. Nycz, Brian D. Salyer, Jon C. Serbousek
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Patent number: 8428693Abstract: A method for selecting modular neck components for hip implants based on independent variables associated with physical characteristics of the implant, including leg length, offset, and anteversion. During surgery, the surgeon may be confronted with a need to change a preoperatively-chosen modular neck. For example, the surgeon may desire a change in at least one of the variables, e.g., leg length, offset, and/or anteversion. The present method allows the surgeon to quickly and easily select a different modular neck based on an evaluation of one of the variables without requiring reevaluation of the other variables. The method may include preoperative planning in which a template including a grid coordinate system is used.Type: GrantFiled: April 12, 2010Date of Patent: April 23, 2013Assignee: Zimmer, Inc.Inventor: Steven L. Meulink
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Patent number: 8419743Abstract: An assembly tool comprises in an assembled configuration a proximal implant fastener, a distal implant fastener, and a compression member. The assembly tool is operable to hold in the assembled configuration a proximal implant partially engageable with a distal implant during implantation and axial impaction. Axial impaction is exerted through the compression member of the assembly tool. The assembly tool is also operable to securely lock the tapers of proximal and distal implants after impaction by rotating the compression member.Type: GrantFiled: March 5, 2010Date of Patent: April 16, 2013Assignee: Biomet Manufacturing Corp.Inventors: Aaron P. Smith, Tyler D. Witt, Andrew Freiberg
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Patent number: 8419799Abstract: An assembly tool (1) for assembly of a first component (2) of a prosthesis (4) to a second component (6) of the prosthesis (4) for use in joint arthroplasty is provided. The tool (1) includes a first member (8) operably associated with the first component (2). The first member (8) defines a first member longitudinal axis (10) of the first member (8). The tool also includes a second member (12) operably associated with the second component (6). The second member (12) defines a second member longitudinal axis (14) of the second member (12). The second member (12) is adapted to provide relative motion of the second member (12) with respect to the first member (8) when the second member (12) is rotated relative to the first member (8) about the second member longitudinal axis (14).Type: GrantFiled: October 23, 2007Date of Patent: April 16, 2013Assignee: DePuy Products, Inc.Inventors: Kimberly Ann Dwyer, David Wayne Daniels, Brad Alan Parker
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Patent number: 8400312Abstract: An operation assisting system. When an operator manipulates an operation instrument to perform an operation for a joint surgery including a hip replacement, the operation assisting system provides the operator with information on the orientation of a bone such as a pelvis and an appropriate direction of the operation instrument relative to the bone to assist the operator so as to complete the operation in an easy and accurate manner, which ensures a high degree of operation accuracy and reduces the cost of the system.Type: GrantFiled: October 9, 2007Date of Patent: March 19, 2013Assignee: Saga UniversityInventors: Takao Hotokebuchi, Kenbu Teramoto, Masamori Shigematsu
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Patent number: 8394106Abstract: 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: GrantFiled: March 29, 2012Date of Patent: March 12, 2013Assignee: Zimmer, Inc.Inventors: Ryan T. Ward, Mark A. Wise
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Patent number: 8361077Abstract: An insertion instrument comprising an elongate shaft, a suction head provided at the front end thereof for connection to a joint socket, a suction device with a piston guided in the shaft, a suction line opening out at the suction head, and an actuating element which is guided along a guiding track on the shaft. The guiding track can be helically shaped and have a locking arrangement, preferably in the form of a recess, for the actuating element in a suction position. Due to the helical shape of the guiding track, the actuating element executes a rotational and longitudinal movement during its displacement. The longitudinal movement produces a negative pressure in the suction line ensuring maintenance of the pressure, while the rotating movement causes rotation of the actuating element such that it reaches its locking position at the end of the guiding track, providing simplified handling of the instrument.Type: GrantFiled: June 26, 2007Date of Patent: January 29, 2013Inventor: Arnold Keller
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Patent number: 8361162Abstract: This invention relates to an orthopaedic joint prosthesis implant kit (2). The implant kit comprises a stem component (4) of an orthopaedic joint prosthesis which is intended for articulation with a mating component of the joint. The stem component has a distal end (6) and a proximal end (8), and a neck part (10) at the proximal end, and is configured for fixation in a bone cavity-using bone cement material with the distal end within the cavity and the proximal end at the opening of the cavity, and with the neck part protruding from the cavity towards the mating component of the joint. The implant kit further comprises a positioning kit (18), at least one spacer (20, 22, 24) for location between the wall of the cavity and the stem component at its proximal end, and a delivery device (26).Type: GrantFiled: August 22, 2006Date of Patent: January 29, 2013Assignee: DePuy International LimitedInventors: Daniel Berry, Andrew Donn, Brian Griffiths, Fiona Haig, Graham Isaac, Thomas Schmalzried
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Patent number: 8337426Abstract: A surgical instrument for implanting a prosthetic member. The instrument includes an orientation sensor that detects an initial orientation of the prosthetic member and an implanting orientation of the prosthetic member. The instrument further includes a memory module and an input device that receives a user input to transfer the initial orientation detected by the orientation sensor into the memory module for storage. Furthermore, the instrument includes an orientation feedback device that selectively provides an orientation feedback signal to a user. Moreover, the instrument includes a controller that causes the orientation feedback device to provide the orientation feedback signal when the implanting orientation detected by the orientation sensor is substantially equal to the initial orientation stored in the memory module.Type: GrantFiled: June 18, 2009Date of Patent: December 25, 2012Assignee: Biomet Manufacturing Corp.Inventor: Jeffrey H. Nycz
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Patent number: 8308809Abstract: An implant assembly having an articulating surface and an axial cavity arranged to receive an end of a bone, the axial cavity being generally circular in cross section in a plane normal to the axis of the implant, and including a spacing element detachable from the implant. At least a portion of the interior surface of the cavity is roughened and is arranged to abrade bone when the end of the bone is received in the cavity. The spacing element is arranged to prevent the implant from fully seating on the end of the bone such that the implant and the end of the bone are in a predetermined spaced apart arrangement.Type: GrantFiled: December 1, 2008Date of Patent: November 13, 2012Assignee: Depuy International LimitedInventors: Nick Bishop, Gary Moore, Michael Morlock
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Publication number: 20120245702Abstract: A prosthetic assembly A prosthetic assembly (10) comprising: a body portion (12); first and second flanges (14, 16) provided on a rim (18) of the body portion; the first and second flanges being provided with first and second openings (20, 22) respectively; and a bridging member (24) connectable to the first and second flanges such that the member spans between the first and second flanges, the member being provided with a third opening (26); wherein the first, second and third openings are suitable for receiving first, second and third bone attachment members (28, 30, 32) respectively.Type: ApplicationFiled: July 28, 2010Publication date: September 27, 2012Applicant: BIOMET UK LIMITEDInventors: Christos Pappas, Heikki Vilhelm Pitkanen, Robert John Andrew Bigsby, Esa Tapio Anttila, Anthony Ward
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Publication number: 20120226361Abstract: 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: ApplicationFiled: May 14, 2012Publication date: September 6, 2012Applicant: IHIP SURGICAL, LLCInventor: Anatol Podolsky
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Patent number: 8236004Abstract: An acetabular inserter (10) aids a surgeon in controlling the installation of an acetabular cup prosthesis (11) having a central, female aperture (13). The inserter includes an inserter head (20), a housing (12) and a locking mechanism. The housing (12) is attached to the inserter head, the housing enclosing a drive train (14) having, at a far end (134), a prosthesis engaging thread (124), and at the opposite end (42?), a handle (20) which facilitates turning of the drive train by the operator. The locking mechanism is associated with the housing which selectively locks the drive train, and thus the prosthesis, in position. The opposite end (42?) of the drive train has a latch device which enables quick removal from the housing for cleaning and sterilization.Type: GrantFiled: January 11, 2010Date of Patent: August 7, 2012Assignee: Greatbatch Medical S.A.Inventor: Burgi Jonas
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Patent number: 8202324Abstract: A case for modular neck components for hip implants. The case may include indicators based on independent variables associated with physical characteristics of the implant, including leg length, offset, and anteversion. During surgery, the surgeon may be confronted with a need to change a preoperatively-chosen modular neck. For example, the surgeon may desire a change in at least one of the variables, e.g., leg length, offset, and/or anteversion. The case allows the surgeon to quickly and easily select a different modular neck based on an evaluation of one of the variables without requiring reevaluation of the other variables. A method described herein may include preoperative planning in which a template including a grid coordinate system is used, which advantageously provides an intuitive system for the surgeon both preoperatively and during surgery.Type: GrantFiled: March 14, 2011Date of Patent: June 19, 2012Assignee: Zimmer, Inc.Inventors: Steven L. Meulink, Ryan D. Schlotterback, Barish Banerjee, Steven J. Vankoski
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Patent number: 8172851Abstract: 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: GrantFiled: April 21, 2008Date of Patent: May 8, 2012Assignee: Zimmer, Inc.Inventors: Ryan T. Ward, Mark A. Wise
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Patent number: 8167823Abstract: A surgical apparatus includes an orientation sensor that detects an actual orientation of a surgical tool. The apparatus also includes an orientation feedback device that selectively provides an orientation feedback signal. Moreover, the apparatus includes a controller that causes the orientation feedback device to provide the orientation feedback signal when the actual orientation of the surgical tool detected by the orientation sensor is substantially equal to a predetermined target orientation of the surgical tool.Type: GrantFiled: March 24, 2009Date of Patent: May 1, 2012Assignee: Biomet Manufacturing Corp.Inventors: Jeffrey H. Nycz, Christopher J. Nycz
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Patent number: 8152855Abstract: Tools and methods for implanting hip resurfacing femoral prostheses along a path defined by the axis of a shaped femoral head surface are described. The prostheses are stemless partial ball components having an outer surface shaped to conform to an acetabular socket and may be a two part design having a mating sleeve component with an internal bore adapted to receive the shaped femoral head. The tools and methods are capable of accurately implanting both one and two piece ball components and sleeves without requiring the prosthesis to have a central stem or the preparation of a stem cavity in the femoral head and neck.Type: GrantFiled: September 17, 2010Date of Patent: April 10, 2012Assignee: Howmedica Osteonics Corp.Inventors: Peter Tulkis, Robert E. Ledger, Patrick Raugel
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Patent number: 8070822Abstract: A method for controlling the mutual angle between the parts of an artificial hip joint during an operation for insertion of the artificial hip joint, is described. The stem of the femoral hip prosthesis is fastened permanently or removable in the usual manner in the proximal end of the femur. A tool for controlling of the mutual angle between the stem of the prosthesis and the cup of the prosthesis is fastened to the stem. The femur of the patient is then oriented in a predefined position and the cup is then brought into its intended position by means of the femur of the patient and the mentioned tool. A tool for controlling the mutual angle between the parts of the artificial hip joint is also described.Type: GrantFiled: September 13, 2000Date of Patent: December 6, 2011Assignee: OM Surgical (UK) LimitedInventor: Bjørn Franc Iversen
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Patent number: 8066778Abstract: An acetabular cup assembly can include a cup portion and a bearing. The cup portion can include a porous metal outer layer having a first thickness and a solid titanium inner layer having a second thickness. A mating feature can be formed between the cup portion and the bearing. The bearing can be adapted to be selectively secured to the titanium inner layer. In one example, the bearing is formed of cobalt.Type: GrantFiled: February 22, 2007Date of Patent: November 29, 2011Assignee: Biomet Manufacturing Corp.Inventors: Jason D Meridew, Troy W Hershberger
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Patent number: 8048165Abstract: A method for removing a bearing that is coupled to a prosthetic implant by a ring includes advancing a distal end of a removal tool in a first direction and into a slit formed in the ring. The ring can be caused to expand radially from engagement with the bearing. The distal end of the removal tool can be advanced in a second direction such that the removal tool engages the bearing. The distal end of the removal tool can be further advanced in the second direction such that the removal tool urges the bearing away from the prosthetic implant.Type: GrantFiled: April 1, 2011Date of Patent: November 1, 2011Assignee: Biomet Manufacturing Corp.Inventors: Bryce A. Isch, Jason D. Meridew, Troy W. Hershberger
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Patent number: 7998147Abstract: A modular hip body/stem inserter comprises a stem inserter and a holder. A proximal body portion of an implant is loaded, or mounted, onto the holder. A distal stem portion of the implant is affixed onto the stem inserter. The modular hip body/stem inserter maintains the proximal body portion and distal stem portion a short distance apart. The stem inserter can be adjusted to control the version of the distal stem, while the holder can be independently adjusted to control the version of the proximal body. Once the version is adjusted to determine a final seating position, the stem inserter portion is removed and the holder is then used to impact the proximal body and distal stem together, thereby locking the implant components together through a taper locking mechanism.Type: GrantFiled: June 30, 2009Date of Patent: August 16, 2011Assignee: Howmedica Osteonics Corp.Inventors: Michael Santarella, Richard H. Pilsbury, Martin M. Coyne, III
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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: 7879042Abstract: An instrument for use in removal of a prosthetic implant for use performing arthroplasty is provided. The instrument includes a body and a first member. The first member is operably associated with the body. The first member has a contact portion for engagement with the implant at a first position. The instrument also includes a second member operably associated with the body. The second member is moveable with respect to the first member and the second member has a contact portion for engagement with the implant at a second position, spaced from the first position.Type: GrantFiled: March 5, 2004Date of Patent: February 1, 2011Assignee: Depuy Products, Inc.Inventors: Jack F. Long, Robert VonZabern
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Patent number: 7828805Abstract: A hip stem centralizer datum guide and method are provided for positioning a proximal portion of a hip stem component within bone cement in an intramedullary canal of a femur. The datum guide is positionable in a predetermined position relative to the intramedullary canal and is able to create a datum that records the predetermined hip stem component position relative to the intramedullary canal. The datum is able to be referenced to position the hip stem component in the predetermined hip stem component position in the bone cement in the intramedullary canal.Type: GrantFiled: February 2, 2006Date of Patent: November 9, 2010Assignee: Zimmer Technology, Inc.Inventors: Stephen H. Hoag, James L. Crumley, Scott J Steffensmeier, Erin M. Johnson, Kevin S. Cook, Archie W. Newsome, Bobby Chan
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Patent number: 7799029Abstract: An instrument for compacting bone material is provided. The instrument includes a first component defining a longitudinal axis of the first component and a second component. The second component is moveably associated with the first component. The second component is moveable at least partially in a radial direction outwardly from the longitudinal axis of the first component.Type: GrantFiled: September 26, 2003Date of Patent: September 21, 2010Assignee: DePuy Orthopaedics, Inc.Inventor: Michael C. Jones
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Patent number: 7780673Abstract: A method and apparatus for performing a minimally invasive total hip arthroplasty including an acetabular cup inserter is provided. The cup inserter is utilized for securing a prosthetic acetabular component thereto for implantation into a hip joint. The acetabular cup inserter includes a frame having an offset frame leg to allow for placement of an acetabular cup in the correct anteversion and abduction without interference from soft tissue.Type: GrantFiled: April 13, 2005Date of Patent: August 24, 2010Assignee: Zimmer Technology, Inc.Inventors: Dean M. J. Acker, Robert D Krebs
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Publication number: 20100185296Abstract: A case for modular neck components for hip implants. The case may include indicators based on independent variables associated with physical characteristics of the implant, including leg length, offset, and anteversion. During surgery, the surgeon may be confronted with a need to change a preoperatively-chosen modular neck. For example, the surgeon may desire a change in at least one of the variables, e.g., leg length, offset, and/or anteversion. The case allows the surgeon to quickly and easily select a different modular neck based on an evaluation of one of the variables without requiring reevaluation of the other variables. A method described herein may include preoperative planning in which a template including a grid coordinate system is used, which advantageously provides an intuitive system for the surgeon both preoperatively and during surgery.Type: ApplicationFiled: March 12, 2010Publication date: July 22, 2010Applicant: ZIMMER, INC.Inventors: Steven L. Meulink, Ryan D. Schlotterback, Barish Banerjee, Stephen J. Vankoski
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Patent number: 7727282Abstract: A method and apparatus for implanting various portions of a prosthesis into an anatomy. The instruments can include portions that allow for positive and rigid engagement with a selected prosthesis member to allow for positioning it relative to the anatomy. Further, various instruments can include portions that allow it to engage or match with marking portions or alignment portions on a first prosthesis member to align a second prosthesis member with the first one. Further, methods of using the various instruments are taught and providing for a less or minimally invasive procedure.Type: GrantFiled: March 17, 2006Date of Patent: June 1, 2010Assignee: Biomet Manufacturing Corp.Inventors: W Jason Slone, Kimberly S Parcher, Ryan C Lakin, Aaron J Smits, Kurt N Schmidt
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Patent number: 7699853Abstract: The present invention relates to a set of tools and accessories used for properly positioning a stemmed humeral component, and/or a humeral stem provisional, within a canal in the humerus. The set of tools and accessories includes one or more fin clamps that are configured to be temporarily attached to a fin on the humeral component or the provisional; a ruler that is configured to be attached to the arm of the fin clamp, a fixation pin and pin driver configured to be used with the other tools for marking a position on the humerus; and one or more sleeves that are configured to slide over the stem of the humeral stem provisional to maintain it in the desired position.Type: GrantFiled: December 18, 2003Date of Patent: April 20, 2010Assignee: Zimmer, Inc.Inventors: Anitra Durand-Allen, Roy Wiley, Louis Bigliani, Evan Flatow, Ian Kelly, George McCluskey, Anthony Miniaci, Gregory Nicholson, Michael Pearl, Ken Yamaguchi
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Patent number: 7597715Abstract: An orthopedic prosthesis for implantation into a bone of a patient includes a porous metal shell adapted to be affixed within the bone. The porous metal shell includes an outer surface adapted to receive bone ingrowth and an inner surface adapted to engage a liner. The porous metal shell is porous from the outer surface to the inner surface. A non-porous member may be affixed to the porous metal shell. The non-porous member may include a piercing member extending from the outer surface, the piercing member adapted to penetrate the bone in an implanted position. The non-porous member may include spikes or fins. In one example, the piercing member may define a reduced material cross section at an interface with the outer surface of the porous metal shell. The piercing member may be adapted to be broken at the reduced material cross section and removed from the porous metal shell.Type: GrantFiled: February 17, 2006Date of Patent: October 6, 2009Assignee: Biomet Manufacturing Corp.Inventors: David R Brown, Jason D Meridew, Robert M Ronk, Troy W Hershberger
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Patent number: 7585301Abstract: A modular hip body/stem inserter comprises a stem inserter and a holder. A proximal body portion of an implant is loaded, or mounted, onto the holder. A distal stem portion of the implant is affixed onto the stem inserter. The modular hip body/stem inserter maintains the proximal body portion and distal stem portion a short distance apart. The stem inserter can be adjusted to control the version of the distal stem, while the holder can be independently adjusted to control the version of the proximal body. Once the version is adjusted to determine a final seating position, the stem inserter portion is removed and the holder is then used to impact the proximal body and distal stem together, thereby locking the implant components together through a taper locking mechanism.Type: GrantFiled: June 12, 2002Date of Patent: September 8, 2009Assignee: Howmedica Osteonics Corp.Inventors: Michael Santarella, Richard H. Pilsbury, Martin M. Coyne, III
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Patent number: 7582092Abstract: An assembly tool for assembly of a first component of a prosthesis to a second component of the prosthesis for use in joint arthroplasty is provided. The tool includes a first member operably associated with the first component and a second member. The second member is operably associated with the second component. At least one of the first member and the second member are adapted to provide for the assembly of the first component of the prosthesis to the second component of the prosthesis. The second member is operably associated with the first member for relative motion between the first member and the second member for assembly of the first component of the prosthesis to the second component. The tool also includes an angular orientation feature cooperating with at least one of the first member and the second member for at least one of replicating and measuring the relative angular orientation of the first component with respect to the second component.Type: GrantFiled: June 28, 2004Date of Patent: September 1, 2009Assignee: DePuy Products, Inc.Inventors: Michael C. Jones, David W. Daniels
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Patent number: 7572294Abstract: A system for replacing a portion of a hip joint can include a cup having an outer surface and an inner surface. A bearing can include an outer bearing surface and an inner articulating surface. The outer bearing surface can be positioned adjacent to the cup. A ring can be selectively disposed between the cup and the bearing. The ring can define an annular body having a slit formed therein. 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 a locked position away from engagement with the bearing to an unlocked position. The bearing engaging surface can be adapted to engage the bearing and urge the bearing away from the cup.Type: GrantFiled: March 7, 2007Date of Patent: August 11, 2009Assignee: Biomet Manufacturing Corp.Inventors: Jason D Meridew, Troy W Hershberger
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Publication number: 20080306486Abstract: A surgical alignment guide for hip replacement or revision surgery includes a support (12) for a prosthetic acetabular cup, the support being connected to one end of a carrier shaft (10). The support (12) has a bore (14) angled relative to the shaft so that a prosthetic acetabular cup secured to the support (12) has the correct orientation. An arm (26) extends from the shaft (10) at a position spaced from the support (12), and an adjustment arrangement (17, 21) is associated with the shaft (10) to enable adjustment of the angular position of the bore (14) with respect to the arm (26). In one form, an outer end of the arm (26) is connected to a gauge (28) which provides an alignment orientation indication of the cup support (12) and a prosthetic acetabular cup attached thereto. The adjustment arrangement may have two radial fingers (17) extending from the shaft (10) and engagable with teeth (24) associated with the arm (26).Type: ApplicationFiled: November 16, 2006Publication date: December 11, 2008Inventor: Robert Lye
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Patent number: 7455693Abstract: Leaflike shaft (1) of a hip-joint prosthesis for anchoring in the femur, according to a towards a distal end (5), with a femur-anchoring section (1a, . . . 1i) having a long axis (A) and with a prosthesis neck (2), wherein the femur-anchoring section (1a, . . . 1i) has a substantially rectangular external contour in a plane perpendicular to the long axis (A), optionally with recesses in the side edges and/or at the corners.Type: GrantFiled: May 12, 2006Date of Patent: November 25, 2008Assignee: Smith & Nephew Orthopaedics, AGInventor: Karl Zweymuller
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Patent number: 7344565Abstract: An acetabular component comprises a thin-walled, partial spherical body having an inner surface defining an articular surface and having angled recesses along an outer surface of the body for releasable engagement with an insertion and extraction tool. An insertion and extraction tool comprises a spring-loaded locking member movable from an extended position to a retracted position in response to relative sliding movement of an outer sleeve and inner shaft of the tool effected via an actuating force at a proximal end of the tool. The tool comprises engagement members insertable in the recesses when the locking member is retracted and, upon release of the actuating force, the locking member automatically returns to the extended position causing fingers of the locking members to enter the recesses and lock the acetabular cup to the tool.Type: GrantFiled: February 4, 2004Date of Patent: March 18, 2008Assignee: Wright Medical Technology, Inc.Inventors: Steven F. Seyer, Ramon Luna
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Publication number: 20080039950Abstract: A trial device and a method for using the device in surgery are disclosed. The device includes a body including a proximal portion and a distal portion. The proximal portion has a post or trunion projecting therefrom. The distal portion extends from the proximal portion and includes a first arm and a second arm, the first and second arms being moveable with respect to one another. The body further includes a cavity formed therein so as to extend through the proximal portion and into the distal portion. The device further includes a driver adapted for sliding engagement within the internal cavity of the body such that movement of the driver, preferably in a distal direction, causes movement of a portion of the first arm away from a portion of the second arm.Type: ApplicationFiled: August 11, 2006Publication date: February 14, 2008Applicant: Howmedica Osteonics Corp.Inventors: Roy Philip Splieth, Shawn Michael Kroll
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Publication number: 20080021567Abstract: A case for modular neck components for hip implants. The case may include indicators based on independent variables associated with physical characteristics of the implant, including leg length, offset, and anteversion. During surgery, the surgeon may be confronted with a need to change a preoperatively-chosen modular neck. For example, the surgeon may desire a change in at least one of the variables, e.g., leg length, offset, and/or anteversion. The case allows the surgeon to quickly and easily select a different modular neck based on an evaluation of one of the variables without requiring reevaluation of the other variables. A method described herein may include preoperative planning in which a template including a grid coordinate system is used, which advantageously provides an intuitive system for the surgeon both preoperatively and during surgery.Type: ApplicationFiled: December 27, 2006Publication date: January 24, 2008Applicant: ZIMMER TECHNOLOGY, INC.Inventors: Steven L. Meulink, Ryan D. Schlotterback, Barish Banerjee, Stephen J. Vankoski
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Patent number: 7297166Abstract: An assembly tool (1) for assembly of a first component (2) of a prosthesis (4) to a second component (6) of the prosthesis (4) for use in joint arthroplasty is provided. The tool (1) includes a first member (8) operably associated with the first component (2). The first member (8) defines a first member longitudinal axis (10) of the first member (8). The tool also includes a second member (12) operably associated with the second component (6). The second member (12) defines a second member longitudinal axis (14) of the second member (12). The second member (12) is adapted to provide relative motion of the second member (12) with respect to the first member (8) when the second member (12) is rotated relative to the first member (8) about the second member longitudinal axis (14).Type: GrantFiled: June 25, 2003Date of Patent: November 20, 2007Assignee: Depuy Products, Inc.Inventors: Kimberly Ann Dwyer, David Wayne Daniels, Brad Alan Parker
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Patent number: 7291176Abstract: This invention provides apparatus and a method for assembling a modular hip implant where the desired orientation of the neck component is uniquely determined during the trialing phase of the operation, and that same desired orientation is accurately reproduced during the implantation phase of the actual hip implant device.Type: GrantFiled: May 9, 2003Date of Patent: November 6, 2007Assignee: Hayes Medical, Inc.Inventors: Michael A. Serra, Shaun B. Hanson, Alfred S. Despres, Robert German
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Publication number: 20070219640Abstract: A prosthetic ball and socket joint comprising a ceramic on ceramic articulation surface and a resilient bone interface coupling component.Type: ApplicationFiled: March 19, 2007Publication date: September 20, 2007Applicant: Active Implants CorporationInventor: Amiram Steinberg
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Patent number: 7179297Abstract: The present invention is directed to a set of trial prosthesis instrumentation for use in trial fitting of a medical implant such as a femoral hip prosthesis. The two piece set provides a combined bipolar and unipolar trial prosthesis instrumentation and comprises an outer component and a inner component. The outer component comprises an exterior surface characterized by a substantially hemispherical shape to correspondingly mate with a joint socket and an interior surface characterized by a substantially hemispherical shape, and an inner component that comprises an exterior surface that comprises a surface and that is shaped to correspondingly mate with the interior surface of the outer component and an interior surface characterized by a substantially columnar shape that correspondingly mates with a prosthetic stem. Methods of use are also contemplated.Type: GrantFiled: September 17, 2002Date of Patent: February 20, 2007Assignee: Smith & Nephew, Inc.Inventor: Terry W. McLean
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Patent number: 7179259Abstract: An instrument assembly for inserting a lateral fastener into a lateral bore of a stem body implanted into a bone. The instrument assembly includes an outrigger having an alignment tube extending laterally from the stem body, wherein the outrigger can be coupled with the stem body such that the alignment tube extends coaxially with the lateral bore.Type: GrantFiled: June 4, 2004Date of Patent: February 20, 2007Assignee: Biomet Manufacturing Corp.Inventor: Philip M Gibbs
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Patent number: 7022141Abstract: An instrument (200) for at least one of replicating and measuring the angular orientation of a first component (54) of a prosthesis (51) to a second component (52) of the prosthesis (51) for use in joint arthroplasty. The instrument (200) includes a first member (202) for cooperation with the first component (54), a second member (210) for cooperation with the second component (52), and a feature (220). The feature (220) cooperates with the first member (202) and the second member (210) for at least one of replicating and measuring the relative angular orientation of the first component (54) with respect to the second component (52).Type: GrantFiled: December 20, 2002Date of Patent: April 4, 2006Assignee: Depuy Products, Inc.Inventors: Kimberly A. Dwyer, David Daniels, Brad Parker
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Patent number: 6991655Abstract: A system and a method for ensuring correct insertion of the components of a femoral prosthesis, i.e. a prosthesis stem with a ball head and a cup with recess for receipt of the ball head, is described. The system comprises a tool for controlling the mutual angle between the prosthesis stem and the cup in addition to a positioning system for definition of a reference system and for determination and adjustment of the offset and length of the leg.Type: GrantFiled: April 8, 2002Date of Patent: January 31, 2006Assignee: Orthometer A/SInventor: Bjorn Franc Iversen
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Patent number: 6884264Abstract: The present invention provides a system and a method for reducing pores, or air pockets, that form at the interface between the material used to attach or adhere the surface of a component, such as a prosthesis, to a site. A preferred embodiment of the invention includes an actuator that controls a coupler which transmits energy to a prosthesis being inserted into a material to reduce porosity at an interface between the prosthesis and the material. The system of the present invention can include an oscillating hand-held device that vibrates the stem component of an orthopedic prosthesis at a particular frequency and amplitude. The device is typically held by the hand of the surgeon, who guides the vibrating prosthesis into the cement-filled medullary cavity.Type: GrantFiled: March 19, 2002Date of Patent: April 26, 2005Assignee: Cambridge Polymer Group, Inc.Inventors: Stephen H. Spiegelberg, Jeffrey W. Ruberti, Gavin G. C. Braithwaite
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Publication number: 20040267373Abstract: An assembly tool (1) for assembly of a first component (2) of a prosthesis (4) to a second component (6) of the prosthesis (4) for use in joint arthroplasty is provided. The tool (1) includes a first member (8) operably associated with the first component (2). The first member (8) defines a first member longitudinal axis (10) of the first member (8). The tool also includes a second member (12) operably associated with the second component (6). The second member (12) defines a second member longitudinal axis (14) of the second member (12). The second member (12) is adapted to provide relative motion of the second member (12) with respect to the first member (8) when the second member (12) is rotated relative to the first member (8) about the second member longitudinal axis (14).Type: ApplicationFiled: June 25, 2003Publication date: December 30, 2004Inventors: Kimberly Ann Dwyer, David Wayne Daniels, Brad Alan Parker
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Publication number: 20040267372Abstract: A modular trial neck segment is utilized for trialing a hip prosthesis for a total hip arthroplasty. The modular trial neck segment is preferably, but not necessarily, utilized for trialing a hip prosthesis for a total hip arthroplasty. The trial neck segment includes a mount attachable to a stem or broach, and a neck that is translatable on the mount for providing various neck offsets with respect to the mount and/or broach. Neck offset is changed via movement of the neck in a single plane of motion. This facilitates the use of the subject invention in minimally invasive arthroplasty wherein working dimensions are small. The present design replicates the biomechanics of the neck region of the implant. The mount and slidable neck provide a plurality of neck offsets and/or neck lengths for trialing a final prosthesis in a single device.Type: ApplicationFiled: June 30, 2003Publication date: December 30, 2004Inventors: Thomas M. Vanasse, David Robert Tuttle, Marc Gary Weissman
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Publication number: 20040260399Abstract: A femoral neck protection device comprises a main body disposed with a hollow sleeve; and a flange extended outwardly from the peripheral rim at one end of the sleeve, so that when this protection device is in use, the fractured head of the femur is removed through a surgical operation and a neck of a femur is trimmed to be fitly inserted into the shape of the sleeve of the present invention; the flange of the sleeve tightly affixes to the surface of the femur so as to completely protect the trimmed femoral neck protection device. In addition to the central hole of the sleeve, at least one aperture is disposed on the flange thereon that allows the new-grown blood vessels and callous formation of the femur to pass through the apertures and cover the flange and integrally connect the sleeve and the femur.Type: ApplicationFiled: March 19, 2004Publication date: December 23, 2004Inventor: Poon-Ung Chieng
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Publication number: 20040249384Abstract: A compacting broach comprises an elongate body and a distal tip at a forward end of the body. The body plurality of corner edges corresponding to the corner edges of a prosthetic component, cutting teeth along the corner edges and side walls between the cutting teeth of adjacent corner edges. The side walls extend inwardly from the cutting teeth of adjacent corner edges and compact cancellous bone as the cutting teeth penetrate cortical bone during advancement of the broach in the intramedullary canal. The distal tip comprises a plurality of fins radial to a central longitudinal axis of the broach and extending longitudinally, distally from the body. The fins contact the side of the canal at locations about a central axis of the canal to center the broach in the canal prior to the cutting teeth engaging cortical bone as the broach is advanced therein.Type: ApplicationFiled: January 26, 2004Publication date: December 9, 2004Inventors: J. David Blaha, Angelo DeLollis, Irina Timmerman, Henry Faber