Cement Bone Plug Or Bone Canal Positioning Means Patents (Class 623/23.48)
  • Patent number: 9597119
    Abstract: A bone anchor assembly comprising a shank, receiver, pressure insert, sleeve and closure. The sleeve having a body constructed of deformable material and including a transfer of non deformable material molded into the body of the sleeve to transfer force around the body. The receiver having interior guides and the insert having guide followers that cooperate to align the insert in the receiver and prevent rotation of the insert in the receiver.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: March 21, 2017
    Inventor: Roger P. Jackson
  • Patent number: 9039781
    Abstract: The present invention comprises devices, systems, and methods for elongating bone using an extension implant having a first end and a second end. The first end of the extension implant is inserted into an opening in the live bone and the second end of the extension implant is combined with an enlarged implant. A plurality of channels extend through the components to serve as conduits for delivering fluids and physiological signals which induce bone formation. Some embodiments include a subcutaneous cage assembly for helping to support the implant as the bone heals around it.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: May 26, 2015
    Assignee: Osteoceramics, Inc.
    Inventor: Thomas D. McGee
  • Publication number: 20150025650
    Abstract: A device for bridging a first amputated bone and a second amputated bone is described. The device comprises a first stem configured to be inserted into a cavity of the first amputated bone and a second stem configured to be inserted into a cavity of the second amputated bone. A first head is coupled to the first stem. The first head has a diameter greater than the diameter of the first stem. The first head has a flat surface configured to interface with a severed surface of the first amputated bone. A second head is coupled to the second stem. The second head has a diameter greater than the diameter of the second stem. The second head has a flat surface configured to interface with a severed surface of the second amputated bone. The device further comprises a bridging plate coupled to the first head and the second head.
    Type: Application
    Filed: June 11, 2014
    Publication date: January 22, 2015
    Inventor: Robert Nutter
  • Publication number: 20150018964
    Abstract: A bone void plug according to an exemplary aspect of the present disclosure includes, among other things, a plug body that extends along a longitudinal axis between a proximal face and a distal opening and a recessed opening that extends from the distal opening toward the proximal face, the recessed opening configured to receive a bone void filler.
    Type: Application
    Filed: June 25, 2014
    Publication date: January 15, 2015
    Inventors: Robert BENEDICT, Brandon ROLLER
  • Patent number: 8882851
    Abstract: Embodiments of the invention include an implantable force distribution boot with hydraulic features that mimic the natural hydraulics of a joint. Further embodiments include an exterior prosthetic leg device having intermittent and/or variable electromagnetic features that can engage with magnetic blades on the implantable force distribution boot. In use, the exterior prosthetic leg can be maintained on a residual limb by magnetic force between the implanted blades and the exterior electromagnets. Also disclosed are surgical techniques for preparing a residual limb to better receive and adapt to a prosthetic device. The techniques include an improved surgical method for harvesting a vascularized glabrous skin free flap.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: November 11, 2014
    Inventor: Larry Nelson Smith
  • Publication number: 20140288662
    Abstract: The present invention comprises devices, systems, and methods for elongating bone using an extension implant having a first end and a second end. The first end of the extension implant is inserted into an opening in the live bone and the second end of the extension implant is combined with an enlarged implant. A plurality of channels extend through the components to serve as conduits for delivering fluids and physiological signals which induce bone formation. Some embodiments include a subcutaneous cage assembly for helping to support the implant as the bone heals around it.
    Type: Application
    Filed: March 12, 2014
    Publication date: September 25, 2014
    Applicant: Osteoceramics, Inc.
    Inventor: Thomas D. McGee
  • Patent number: 8801800
    Abstract: Implantable devices for the surgical treatment of bone, and particularly to a bone defect at a joint region, and even more particularly at the subchondral bone level of the joint region, are disclosed. The implantable devices may be formed of a bone material, and configured to serve the dual functions of providing mechanical strength and structural integrity to the area to be treated, while also facilitating the dispersal of a flowable material in the same area. Associated delivery tools are also provided.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: August 12, 2014
    Assignee: Zimmer Knee Creations, Inc.
    Inventors: Charanpreet S. Bagga, Shaun B. Hanson
  • Patent number: 8753406
    Abstract: A delivery device for an osteochondral graft comprising a tube, a plunger and a graft retention assembly is disclosed. The tube has a bore having an inside diameter and extends from a proximal end to a distal end. The inside diameter of the bore is sufficient to accept an osteochondral graft of a desired diameter. The tube has a set of apertures located adjacent the distal end of the tube. The plunger is slidably disposed within the bore of the tube. The graft retention assembly comprises a collar and a set of tabs. The graft retention assembly is attached to the tube such that the tabs are disposed within the apertures of the tube. The tabs are biased towards each other but are capable of being displaced away from each other to receive or release the osteochondral graft.
    Type: Grant
    Filed: April 2, 2013
    Date of Patent: June 17, 2014
    Assignee: Zimmer Inc.
    Inventors: Antony J. Lozier, Daniel P. Murphy
  • Patent number: 8734520
    Abstract: An implant for filling and/or distracting a body region, particularly a non-soft tissue cavity, has a plurality of segments wherein at least two of the segments are flexibly connected. The segments have a crush-strength sufficient to create and/or maintain the distraction of two or more non-soft tissue body surfaces, and to maintain the stability of the body region. The implant may be inserted into a cavity by an applicator having a cannula with a distal opening, and a rotary driver for applying force to move the implant within the cannula.
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: May 27, 2014
    Assignee: Spinal Ventures, LLC
    Inventor: Paul Zwirkoski
  • Publication number: 20140100665
    Abstract: A non-resorbable wound dressing can include a plug made from polytetrafluoroethylene (PTFE). The plug can have a three-dimensional shape. The plug can be substantially cylindrical. The PTFE can have a high density and be expanded. The PTFE can be non-porous or have a porosity of less than about 0.4 microns. The PTFE can also be unsintered and unexpanded. A method of regenerating alveolar bone includes placing a PTFE plug in a cavity formed in an alveolar bone. Placing the plug in the cavity can include contacting at least a portion of a peripheral surface of the plug with the gingival tissue surrounding the cavity. The method can also include inserting a bone graft material in the cavity before placing the plug in the cavity.
    Type: Application
    Filed: October 10, 2012
    Publication date: April 10, 2014
    Applicant: PRESIDIUM BIOMEDICAL LLC
    Inventor: Austin GRAY
  • Patent number: 8690953
    Abstract: The invention relates to an operation system comprising at least one implant and means for the fastening of the implant to a bone, wherein the fastening means include at least one solid spacer, which can be formed of hardened bone cement and is arranged between the implant and the bone in the implanted state, and hardenable liquid bone cement which can be introduced into hollow spaces or intermediate spaces present between the spacer and the implant and/or between the spacer and the bone and wherein the spacer, on the one hand, and the liquid bone cement, on the other hand, are provided with contrast agents chosen in dependence on an imaging observation process or inspection process, in particular an X-ray process, to be used in or after the operation such that the spacer and the liquid cement can be distinguished from the surroundings and from one another on the observation or inspection of their position, in particular in an X-ray.
    Type: Grant
    Filed: August 14, 2006
    Date of Patent: April 8, 2014
    Assignee: Zimmer, GmbH
    Inventor: Sonja Ribic
  • Patent number: 8632603
    Abstract: 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: Grant
    Filed: September 21, 2010
    Date of Patent: January 21, 2014
    Assignee: Tornier, Inc.
    Inventors: Brian C. Hodorek, Robert Courtney, Jr., Ryan Schlotterback
  • Patent number: 8617053
    Abstract: A system for performing a minimally invasive surgical procedure includes a cannula, a surgical instrument for use through the cannula, and a remote positioning system to adjust the relative position between the surgical instrument and the cannula. By allowing a physician to perform the minimally invasive surgical procedure at a distance from the patient, the remote positioning system minimizes the radiation exposure of the physician while still providing accurate control over the procedure.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: December 31, 2013
    Assignee: Warsaw Othropedic, Inc.
    Inventors: Brian W. Donovan, Bryan A. Click
  • Patent number: 8613942
    Abstract: A medical system (10) is provided having a pulling device (20) and an active substance chain (50). The active substance chain (50) has at least two storage units (51) arranged like a chain, and at least one of the storage units (51) is loaded with a medicinal active substance. The pulling device (20) has a grip element (30) and a coupling element (40), and the coupling element (40) has at least one recess (41, 41?). In a free position (100) the active substance chain (50) is arranged separated from the pulling device (20), while in an inserted position (110) at least one of the storage units (51) is arranged form-fitting in a recess (41, 41?). The active substance chain (50) can be moved reversibly from the free position (100) into the inserted position (110).
    Type: Grant
    Filed: June 15, 2010
    Date of Patent: December 24, 2013
    Assignee: Heraeus Medical GmbH
    Inventors: Sebastian Vogt, Hubert Buechner, Hans Boesebeck
  • Publication number: 20130253660
    Abstract: 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: Application
    Filed: May 20, 2013
    Publication date: September 26, 2013
    Applicant: Biomet Manufacturing Corporation
    Inventors: Jeffrey H. NYCZ, Brian D. Salyer, Jon C. Serbousek
  • Patent number: 8524798
    Abstract: Compositions for use in treating and repairing orthopedic defects are provided. The compositions are especially useful for performing percutaneous vertebroplasty, percutaneous kyphoplasty and other procedures. When cured, the compositions are relatively solid but compressible, and prior to curing are viscous liquids with a low enough viscosity to fill voids in cavities such as voids within fractured vertebrae. Optionally, the properties of a composition according to the invention can be adjusted taking into account the hardness and density of the orthopedic structure to be repaired. Also disclosed are devices and methods for using the compositions, and a kit containing components for forming and utilizing the composition.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: September 3, 2013
    Inventors: Linda M. Trebing, Ralph W. Carmichael
  • Patent number: 8500820
    Abstract: A bone cement collector includes a body having a structure that is permeable to bone cement and has opening for trapping bone cement. The body is releasably attached to an orthopaedic implant component at a location on the implant at which bone cement is likely to escape during positioning of the orthopaedic implant.
    Type: Grant
    Filed: April 7, 2009
    Date of Patent: August 6, 2013
    Assignee: Depuy International Limited
    Inventor: Birkbeck Alec
  • Patent number: 8435305
    Abstract: A delivery device for an osteochondral graft comprising a tube, a plunger and a graft retention assembly is disclosed. The tube has a bore having an inside diameter and extends from a proximal end to a distal end. The inside diameter of the bore is sufficient to accept an osteochondral graft of a desired diameter. The tube has a set of apertures located adjacent the distal end of the tube. The plunger is slidably disposed within the bore of the tube. The graft retention assembly comprises a collar and a set of tabs. The graft retention assembly is attached to the tube such that the tabs are disposed within the apertures of the tube. The tabs are biased towards each other but are capable of being displaced away from each other to receive or release the osteochondral graft.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: May 7, 2013
    Assignee: Zimmer, Inc.
    Inventors: Antony J. Lozier, Daniel P. Murphy
  • Patent number: 8338498
    Abstract: A bone defect filler for implantation in a bone defect of a patient includes a particulate polymer distributed within a polymeric binder. The particulate polymer includes a plurality of particles, which may have substantially the same material composition as the polymeric binder. The particles of the particulate polymer may be formed in a variety of shapes and/or sizes to provide the bone defect filler with improved pore interconnectivity, material expansion and contamination characteristics, while maintaining sufficient mechanical strength and handling characteristics for bone repair applications. The bone defect filler also provides the flexibility to be molded or shaped in situ to fill the bone defect.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: December 25, 2012
    Assignee: Doctors Research Group, Inc.
    Inventors: Richard J. Deslauriers, Eric Kolb, John Boxberger
  • Patent number: 7972384
    Abstract: The present invention extends to a stemmed amputation implant. In some embodiments, a dual stemmed implant includes a base plate and two intramedullary rods extending from the proximal side of the base plate. The two intramedullary rods are configured for insertion into corresponding intramedullary bone canals reamed into remaining portions of amputated bones, such as, for example, a tibia and fibula or an ulna and radius. The position of the intramedullary rods relative to one another is configured to maintain appropriate separation between amputated bones when the first intramedullary rod and the second intramedullary rod are inserted into the amputated bones. In some embodiments, a hollow tube replaces one or more of the intramedullary rods. A hollow tube can be configured to cover the exterior of a bone, such as, for example, the fibula, when the bone is not stable enough for intramedullary fixation.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: July 5, 2011
    Inventor: Douglas Eric Parsell
  • Publication number: 20110112653
    Abstract: A bone cement collector includes a body having a structure that is permeable to bone cement and has opening for trapping bone cement. The body is releasably attached to an orthopaedic implant component at a location on the implant at which bone cement is likely to escape during positioning of the orthopaedic implant.
    Type: Application
    Filed: April 7, 2009
    Publication date: May 12, 2011
    Applicant: DEPUY INTERNATIONAL LTD
    Inventor: Birkbeck Alec
  • Patent number: 7828805
    Abstract: 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: Grant
    Filed: February 2, 2006
    Date of Patent: November 9, 2010
    Assignee: Zimmer Technology, Inc.
    Inventors: Stephen H. Hoag, James L. Crumley, Scott J Steffensmeier, Erin M. Johnson, Kevin S. Cook, Archie W. Newsome, Bobby Chan
  • Patent number: 7776099
    Abstract: A bone implant having a core section to which a prosthesis is eventually secured, and rib-like projections or anchoring prongs enhancing the hold of the implant in the bone. The invention is particularly, but not exclusively, intended as a dental implant. The socket for the implant is drilled in a bone using a suitable template which is subsequently inserted in an original pre-drilled bore and which serves as a guide for subsequent drilling of bores for the anchoring prongs or rib-like projections. Several different types of the templates are disclosed together with a number of compatible implants. A specific tool is also disclosed which reduces the damage to the bone by reducing the volume of the initial portion of the socket adapted to receive the associated template.
    Type: Grant
    Filed: January 6, 2004
    Date of Patent: August 17, 2010
    Inventor: Michael Lococo
  • Patent number: 7749279
    Abstract: A bone cement plug for fitting into the intramedullary canal within a bone to restrict flow of bone cement during surgery comprises a sleeve (2) whose wall is circumferentially continuous and has an outer surface (10) for contacting the wall (32) of the canal. The sleeve (2) is formed from a deformable material so that it can be expanded transversely to contact the surface (32) of the canal. The plug includes an expander which can be drawn through the cavity (12) in a direction generally along the axis of the sleeve (2), to cause the sleeve (2) to expand transversely to contact the surface (32) of the canal. The inner surfaces of the wall converge towards the end (16) of the sleeve (2) towards which the expander is drawn to cause the sleeve (2) to expand to contact the surface (32) of the canal.
    Type: Grant
    Filed: December 5, 2003
    Date of Patent: July 6, 2010
    Assignee: Depuy International Ltd.
    Inventors: Richard Twomey, Neil Watkins, Rick Kowalski, John Ewans
  • Publication number: 20100125240
    Abstract: Described herein is a novel drug delivery assembly having particular applicability to the field of orthopedic and surgical medicine. The devices and assemblies described herein enable the efficient application and retention of potentially expensive therapeutic materials to very specific locations, particularly those associated with voids in bone and tissue. One particularly unique aspect of the present invention involves the introduction of constructs which promote the retention of therapeutic material in the target area of application for beneficial use, for example by forming a proximal barrier that prevents leakage of the therapeutic material out of the target area. Additionally, the present invention provides unique devices and methods for surgical introduction of such constructs.
    Type: Application
    Filed: March 30, 2009
    Publication date: May 20, 2010
    Inventors: Richard H. SPEDDEN, Lew C. Schon, Laura J. Pingel
  • Patent number: 7682400
    Abstract: An implant for filling and/or distracting a body region, particularly a non-soft tissue cavity, has a plurality of segments wherein at least two of the segments are flexibly connected. The segments have a crush-strength sufficient to create and/or maintain the distraction of two or more non-soft tissue body surfaces, and to maintain the stability of the body region. The implant may be inserted into a cavity by an applicator having a cannula with a distal opening, and a rotary driver for applying force to move the implant within the cannula.
    Type: Grant
    Filed: December 9, 2005
    Date of Patent: March 23, 2010
    Assignee: Spinal Ventures, LLC
    Inventor: Paul Zwirkoski
  • Publication number: 20090312841
    Abstract: A plug for filling a bone void, such as a void left behind after implant removal, and a method for using the same. The plug is strong and durable enough to increase the strength of the void and the bone surrounding the void upon insertion. The plug's porous, open-cell construction may increase the strength of the void and the bone surrounding the void by permitting bone growth into the plug. The plug may be provided with a channel configured to receive a bone growth promoting material, a medication, or another material.
    Type: Application
    Filed: June 13, 2008
    Publication date: December 17, 2009
    Applicant: ZIMMER, INC.
    Inventor: Michael J. LaLonde
  • Publication number: 20090198342
    Abstract: The present invention extends to a stemmed amputation implant. In some embodiments, a dual stemmed implant includes a base plate and two intramedullary rods extending from the proximal side of the base plate. The two intramedullary rods are configured for insertion into corresponding intramedullary bone canals reamed into remaining portions of amputated bones, such as, for example, a tibia and fibula or an ulna and radius. The position of the intramedullary rods relative to one another is configured to maintain appropriate separation between amputated bones when the first intramedullary rod and the second intramedullary rod are inserted into the amputated bones. In some embodiments, a hollow tube replaces one or more of the intramedullary rods. A hollow tube can be configured to cover the exterior of a bone, such as, for example, the fibula, when the bone is not stable enough for intramedullary fixation.
    Type: Application
    Filed: September 25, 2008
    Publication date: August 6, 2009
    Inventor: Douglas Eric Parsell
  • Patent number: 7530982
    Abstract: A graft formation and delivery instrument comprising an outer barrel, a piston, and an inner pin. The outer barrel has a center aperture. The piston is seated within the center aperture, has a through bore, and is operable to move within the center aperture. The inner pin is seated within the through bore of the piston and operable to move within the through bore. The outer barrel receives multiple graft components that are contacted by at least one of the piston and the inner pin to assemble a composite graft from the graft components. The instrument is operable to direct the composite graft to a desired implant area and deposit the composite graft at the implant area.
    Type: Grant
    Filed: October 7, 2004
    Date of Patent: May 12, 2009
    Assignee: Biomet Manufacturing Corp.
    Inventor: David Goshert
  • Publication number: 20090069900
    Abstract: A method for forming a composite implant in a bone cavity is disclosed, which includes i) forming a first bone filler in a bone cavity; and ii) inserting a second bone filler into an unfilled space in the bone cavity, wherein the first bone filler has a higher compressive strength and slower bioresorption rate in comparison with the second bone filler.
    Type: Application
    Filed: September 5, 2008
    Publication date: March 12, 2009
    Applicant: Bezaleel, LLC.
    Inventors: Jiin-Huey Chern Lin, Chien-Ping Ju, Pong-Jeu Lu
  • Publication number: 20090048603
    Abstract: A hip stem centralizer datum guide (40, 100, 200, 300) and method are provided for positioning a proximal portion of a hip stem component (44) 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 (70, 72, 74, 76, 120, 220, 302) 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: Application
    Filed: February 1, 2007
    Publication date: February 19, 2009
    Applicant: ZIMMER TECHNOLOGY, INC.
    Inventors: Stephen H. Hoag, James L. Crumley, Scott J. Steffensmeier, Erin M. Johnson, Kevin S. Cook, Archie W. Newsome, Bobby Chan
  • Publication number: 20090048683
    Abstract: A tissue positioning device comprising a biocompatible member having a size and shape suitable for placement within a space adjacent to a tissue to be positioned and which acts to maintain the tissue in a desired position. The member may be a rigid or flexible spacer having a defined shape, or a bladder capable of receiving and being at least partially expanded by a filler material. The device can made from a variety of materials or a composite of materials as needed, and may include one or more attachment means by which it can be secured to nearby tissues such that it is maintained in a desired spatial location. The filler material can be any of a number of substances, including liquids, gases, a curable liquid such as bone cement or urethane foam, or a spring.
    Type: Application
    Filed: August 13, 2008
    Publication date: February 19, 2009
    Inventors: Stephen Morris, Thomas Weisel, Roger Pisarnwongs
  • Publication number: 20090043394
    Abstract: An interbody fusion device in one embodiment includes a tapered body defining a hollow interior or chamber for receiving bone graft or bone substitute material. The body defines exterior threads which are interrupted over portions of the outer surface of the device. The fusion device includes truncated side walls so that on end view the body takes on a cylindrical form. In another embodiment, the tapered body is solid and formed of a porous biocompatible material having sufficient structural integrity to maintain the intradiscal space and normal curvature. The material is preferably a porous tantalum composite having fully interconnected pores to facilitate complete bone tissue ingrowth into the implant. In further embodiments, the fusion devices are provided with osteogenic material to facilitate bone ingrowth. A cap is also provided to block the opening of hollow fusion devices. The cap includes an occlusion body and an elongated anchor.
    Type: Application
    Filed: October 15, 2008
    Publication date: February 12, 2009
    Inventors: Thomas Zdeblick, William F. McKay, Larry Boyd, Eddie Ray, III, Thomas McGahan
  • Publication number: 20090043344
    Abstract: A method for repairing defects in bones that may be used to remove a surface defect from the articulating surface of a bone. In one embodiment, a passage is formed in the bone and extending to an articulating surface of the bone, resulting in the removal of bone stock from the bone. By aligning the passage to intersect with the defect in the bone, the creation of the passage itself results in the removal of the defect from the articulating surface of the bone. A biocompatible material may then be inserted through the passage to replace the removed bone stock and may be formed to substantially replicate the shape of the articulating surface of the bone.
    Type: Application
    Filed: August 6, 2007
    Publication date: February 12, 2009
    Applicant: ZIMMER, INC.
    Inventor: Ryan D. Schlotterback
  • Publication number: 20090036995
    Abstract: Joint space interpositional prosthetic devices for positioning between surfaces of a joint in a patient are disclosed. The prosthetic device may have exterior surfaces affixed to the joint surfaces and may have internal surfaces which provide bearing surfaces. In an exemplary embodiment, the bearing surfaces are encapsulated within the device. The exterior surfaces of the device may include bone securement features to facilitate attachment of the prosthetic device to the joint surfaces.
    Type: Application
    Filed: July 25, 2008
    Publication date: February 5, 2009
    Applicant: ZIMMER, INC.
    Inventors: Antony J. Lozier, Russell M. Parrott, David B. Rich
  • Publication number: 20080294269
    Abstract: A system and method for joint restoration by extracapsular means includes an actuator operable to apply a force to a portion of a bone to effect a change 5 in the joint space geometry. One embodiment of the system includes an actuator operable to apply a cyclic loading to subchondral bone of a femur, wherein loads of a predetermined magnitude are alternately applied and released. Between periods of cyclic loading, rest periods are provided where no load is applied. Over time, the femoral joint surface is remodeled in accordance with the location, direction, magnitude, and frequency of the loading.
    Type: Application
    Filed: June 14, 2006
    Publication date: November 27, 2008
    Inventor: Barry M. Fell
  • Publication number: 20080188937
    Abstract: The invention relates to an operation system comprising at least one implant and means for the fastening of the implant to a bone, wherein the fastening means include at least one solid spacer, which can be formed of hardened bone cement and is arranged between the implant and the bone in the implanted state, and hardenable liquid bone cement which can be introduced into hollow spaces or intermediate spaces present between the spacer and the implant and/or between the spacer and the bone and wherein the spacer, on the one hand, and the liquid bone cement, on the other hand, are provided with contrast agents chosen in dependence on an imaging observation process or inspection process, in particular an X-ray process, to be used in or after the operation such that the spacer and the liquid cement can be distinguished from the surroundings and from one another on the observation or inspection of their position, in particular in an X-ray.
    Type: Application
    Filed: August 14, 2006
    Publication date: August 7, 2008
    Applicant: ZIMMER GMBH
    Inventor: Sonja Ribic
  • Publication number: 20080167726
    Abstract: An expandable containment device is provided for use in containing a flowable material. The containment device includes an expandable housing extending along a longitudinal axis and defining an interior region, and including a first housing portion movably engaged with a second housing portion to allow expansion of the housing generally along the longitudinal axis to provide the housing with an axial dimension extending between adjacent bone structures. The containment device further includes an input port in fluid communication with the interior region of the housing and configured to deliver a flowable material into the interior region of the housing.
    Type: Application
    Filed: January 8, 2007
    Publication date: July 10, 2008
    Inventor: Anthony J. Melkent
  • Publication number: 20080119945
    Abstract: A device for cement augmentation of bone implants that includes a hollow cylinder having an inner diameter, an outer diameter and a longitudinal axis. The hollow cylinder includes an inner cavity, a front end configured and adapted for insertion into a bone, a rear end having a bore hole in communication with the inner cavity, and a shell having at least one perforation. The device also includes a bone implant insertable into the hollow cylinder. The hollow cylinder is adapted and configured to receive unhardened bone cement through the bore hole into the inner cavity.
    Type: Application
    Filed: March 24, 2005
    Publication date: May 22, 2008
    Applicant: Synthes (U.S.A.)
    Inventor: Robert Frigg
  • Publication number: 20080015708
    Abstract: A hip stem centralizer and method are provided for positioning a proximal portion of a femoral hip stem component at a desired radial position within an intramedullary canal of a femur. The hip stem centralizer includes a resilient opening that is elastically compressed upon receiving the hip stem to bias the hip stem to a desired position in the intramedullary canal.
    Type: Application
    Filed: July 13, 2006
    Publication date: January 17, 2008
    Inventors: Donald W. Howie, David M. Blakemore, Kevin S. Cook, Stephen H. Hoag, Erin M. Johnson
  • Patent number: 7115163
    Abstract: This invention relates to a cement, which comprises in its main phase of microcrystalline magnesium ammonium phosphate and nanoapatite after hardening and thus at the same time has considerable strength. The material is biologically degradable and is suitable for application in tooth cements, as bone replacement, as bone filler, as bone cement or as bone adhesive.
    Type: Grant
    Filed: April 11, 2005
    Date of Patent: October 3, 2006
    Assignee: Kyphon Inc.
    Inventor: Michael Zimmermann
  • Patent number: 7044978
    Abstract: The present invention provides a positioner for controlling the position of a femoral hip implant within the intramedullary canal of a femur.
    Type: Grant
    Filed: October 27, 2003
    Date of Patent: May 16, 2006
    Assignee: Zimmer Technology, Inc.
    Inventors: Donald W. Howie, David M. Blakemore, Stephen H. Hoag
  • Patent number: 7014661
    Abstract: A transcutaneous prosthesis is disclosed comprising a first component (1) shaped for implantation into a bone (2), a second component (4) intended for location between the bone (2) and the skin, and a third component (5) intended for location exterior to the skin surface, having a low surface energy which deters bacterial adhesion. The second component (4) may carry an adhesion-promoting protein.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: March 21, 2006
    Assignee: University College London
    Inventors: Gordon Blunn, Justin Cobb, Allen Goodship, Paul Unwin
  • Patent number: 6926741
    Abstract: A prosthesis (10) including a stem (12) for implantation at least partially within the medullary canal (14) of a long bone (16). The prosthesis (10) further includes a rod (20) operably associated with the stem (12) and a centralizer (22) having an opening (24) for receiving at least a portion of the rod (20). The centralizer (22) has a surface (26) for guiding the rod (20) into the opening (24).
    Type: Grant
    Filed: January 25, 2002
    Date of Patent: August 9, 2005
    Assignee: Depuy Products, Inc.
    Inventor: Eric Kolb
  • Patent number: 6821300
    Abstract: Apparatus and methods are disposed for maintaining the proper positioning of a prosthetic implant having proximal and distal ends within a prepared bone cavity during cement injection and curing. First stabilization means, implantable within the bone cavity, minimize lateral movement of the distal end of the implant, while second stabilization means, physically separate from the means for minimizing lateral movement of the distal end of the implant, minimize both the lateral movement of the proximal end of the implant and the rotational movement of the implant overall. In the preferred embodiment, the second stabilization means includes an apertured cap removably securable to the end of a bone having the prepared cavity through which the implant is inserted and held in place.
    Type: Grant
    Filed: March 6, 2002
    Date of Patent: November 23, 2004
    Assignee: MedIdea LLC
    Inventor: Michael A. Masini
  • Publication number: 20040176854
    Abstract: A plug for insertion into a bone canal is disclosed. The plug comprises an elongate central body of substantially constant cross section carrying at least four radially extending flanges of substantially equal shape and size. The flanges form solid, disk-like structures, free of cuts and are axially spaced along the central axis of the body, such that they extend in substantially parallel planes. The plug is made of a copolymer of a polyalkylene glycol terephthalate and an aromatic polyester.
    Type: Application
    Filed: March 19, 2004
    Publication date: September 9, 2004
    Applicant: IsoTis N.V.
    Inventors: Saret Cornelis Hesseling, Petrus Tarasius Josephus Spierings
  • Patent number: 6752833
    Abstract: A plug for insertion into a bone canal is disclosed. The plug comprises an elongate central body of substantially constant cross section carrying at least four radially extending flanges of substantially equal shape and size. The flanges form solid, disk-like structures, free of cuts and are axially spaced along the central axis of the body, such that they extend in substantially parallel planes. The plug is made of a copolymer of a polyalkylene glycol terephthalate and an aromatic polyester.
    Type: Grant
    Filed: January 15, 2002
    Date of Patent: June 22, 2004
    Assignee: IsoTis N.V.
    Inventors: Saret Cornelis Hesseling, Petrus Tarasius Josephus Spierings
  • Publication number: 20040107002
    Abstract: The present invention provides a distal tip for the positioning of artificial joint stem that is capable of reliably guiding the insertion of the stem of the cementless artificial joint into a bone canal and positioning the distal end portion of the stem that is inserted into the bone canal at a planned position, thereby to maintain the entire stem in a favorable posture in the bone canal, and prevent osteolysis and loosening of the artificial join even when the distal tip is used.
    Type: Application
    Filed: November 17, 2003
    Publication date: June 3, 2004
    Inventor: Toshinobu Katsuya
  • Publication number: 20040002759
    Abstract: Arthroplasty devices having improved bone in growth to provide a more secure connection within the body. Different embodiments disclosed include devices having threaded intramedullary components, devices configured to receive bone growth promoting substances, devices with resorbable components, and devices configured to reduce shear stress.
    Type: Application
    Filed: June 27, 2003
    Publication date: January 1, 2004
    Inventor: Bret A. Ferree
  • Patent number: 6669734
    Abstract: In the figures, proximal centering apparatuses (4) for collar-less femur shaft prosthesis (1) which can be cemented in and which can be pushed from the medial onto the shaft (3) in the cemented region are shown. The centering apparatus (4) has at least in the medial region a centering wedge (6) which widens towards the proximal and which is connected via webs (7) to a clamping apparatus (8), with the clamping apparatus (8) being arranged in the cement-less region of the prosthesis neck (2) and being removable when the webs (7) are interrupted.
    Type: Grant
    Filed: October 11, 2001
    Date of Patent: December 30, 2003
    Assignee: Sulzer Orthopedics Ltd.
    Inventors: Lorenzo Spotorno, Werner G├╝ttinger