Head Structure Patents (Class 606/305)
  • Publication number: 20130296950
    Abstract: A spinal stabilization system may be formed in a patient. In some embodiments, a minimally invasive procedure may be used to form a spinal stabilization system in a patient Bone fastener assemblies may be coupled to vertebrae Each bone fastener assembly may include a bone fastener and a collar. The collar may be rotated and/or angulated relative to the bone fastener. Detachable members may be coupled to the collar to allow for formation of the spinal stabilization system through a small skin incision. The detachable members may allow for alignment of the collars to facilitate insertion of an elongated member in the collars. An elongated member may be positioned in the collars and a closure member may be used to secure the elongated member to the collars.
    Type: Application
    Filed: July 17, 2013
    Publication date: November 7, 2013
    Inventors: Michael E. Landry, Larry T. Khoo, Erik J. Wagner, Charles R. Forton, Robert J. Jones
  • Publication number: 20130296948
    Abstract: A capless multiaxial screw fixation assembly, including a screw having a threaded portion and a screw head portion positioned at one end thereof and a retainer having a first end, a second end opposite the first end, and a bore for receiving the screw threaded portion so that the screw head portion is seated therein. At least one of the screw and the retainer is configured such that the retainer is able to pivot about the screw head portion in a non-symmetrical manner.
    Type: Application
    Filed: July 5, 2013
    Publication date: November 7, 2013
    Applicant: X-SPINE SYSTEMS, INC.
    Inventor: David Louis Kirschman
  • Publication number: 20130296946
    Abstract: A polyaxial bone screw assembly includes a threaded shank body having an upper capture structure, a head, a retaining ring and a nut. The external capture structure surface includes a threaded portion and a smooth portion; the smooth portion for slidably mating with the retaining ring and the threaded portion for rotatable attachment to the nut within a cavity of the head. The nut fixes the retaining ring to the shank and also provides a tool engagement formation for driving the shank body into bone.
    Type: Application
    Filed: May 13, 2013
    Publication date: November 7, 2013
    Inventor: Roger P. Jackson
  • Publication number: 20130296949
    Abstract: A bone anchor assembly includes a bone anchor having a distal bone engaging portion and a receiving member having a recess for receiving a spinal fixation element. The proximal end of the receiving member may have a groove formed on an exterior surface thereof to facilitate connection of an instrument to the receiving member.
    Type: Application
    Filed: July 9, 2013
    Publication date: November 7, 2013
    Inventors: Christopher Sicvol, Erasmo Lopez, Ramon Ruberte
  • Patent number: 8574272
    Abstract: A semi-constrained screw and a cervical plate assembly that engages to a cervical area of the human vertebrae system are disclosed. The semi-constrained screw and cervical plate assembly includes a cervical plate and one or more semi-constrained bone screws. Each semi-constrained bone screw includes an elongated shank, which is mechanically and releasably coupled to a head portion. The head portion includes one or more threaded segments which define one or more slits therebetween. As the semi-constrained bone screw is driven through the screw opening in the cervical plate and into the bone, the head portion allows poly-axial movement of the shank relative to the head portion.
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: November 5, 2013
    Assignee: K2M, Inc.
    Inventors: Todd Wallenstein, Larry McClintock, Scott Jones
  • Patent number: 8574274
    Abstract: A pedicle screw fixation system and method for use of the same are disclosed. In one embodiment, a tulip is provided for holding a head of a pedicle screw substantially along a longitudinal axis. The tulip includes opposing first and second U-shaped receiving slots aligned along a transverse axis. A rod is received by the opposing first and second U-shaped receiving slots. A coupling collar includes a plurality of resilient fingers circumferentially disposed therearound such that a snap fit engagement with the head of the pedicle screw formed. The coupling collar includes a first deformable face operable for contact with the rod. A set screw is adapted for driving engagement through the tulip along the longitudinal axis such that a second deformable face is positioned for contact with the rod. The first and second deformable faces conform to the shape of the rod in response to forceful engagement therewith.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: November 5, 2013
    Assignee: Eminent Spine LLC
    Inventors: Steve Courtney, David Freehill
  • Patent number: 8574266
    Abstract: A percutaneous facet fixation system minimally invasive, reproducible, efficient, and effective. Capable of immediate stabilization of a facet joint complex, the instrumentation and methods may be used with C-arm and/or endoscopic visualization.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: November 5, 2013
    Assignee: US Spine, Inc.
    Inventor: Mark H. Falahee
  • Publication number: 20130289632
    Abstract: A polyaxial bone screw includes a head member and a shank member. The shank has a capture end and an opposite threaded end for threaded insertion into a vertebra. The head has a U-shaped cradle for receiving a spinal fixation rod and a central bore for receiving the capture end of the shank. An expandible retainer ring with a radial split is snapped onto the capture end of the shank to retain it within the head. The retainer ring has a spherical outer surface which forms a ball joint with a spherical socket cavity within the head to enable the head to be angled relative to the shank. A threaded closure plug is tightened within the cradle to clamp the rod into engagement with a knurled dome on the capture end of the shank to secure the rod relative to the vertebra.
    Type: Application
    Filed: June 21, 2013
    Publication date: October 31, 2013
    Inventor: Roger P. Jackson
  • Publication number: 20130274816
    Abstract: A method is provided and may include rotating a biocompatible, non-metallic threaded fastener at a rotational speed greater than 15,000 revolutions per minute and driving said fastener into a bone at said rotational speed.
    Type: Application
    Filed: June 12, 2013
    Publication date: October 17, 2013
    Inventors: Saddy R. Garcia, Ryan N. Luby
  • Publication number: 20130274817
    Abstract: A polyaxial bone screw assembly includes a receiver, a shank, an articulation structure for retaining the shank in the receiver and a compression insert for engagement with a longitudinal connecting member such as a rod. The articulation structure includes substantially spherical convex and concave surfaces that slidably engage both shank and receiver surfaces to provide compound articulation between the receiver and the shank. The receiver includes inwardly directed spring tabs engaging the insert and prohibiting rotation of the insert within the receiver.
    Type: Application
    Filed: February 26, 2008
    Publication date: October 17, 2013
    Inventor: Roger P. Jackson
  • Publication number: 20130274815
    Abstract: A polyaxial bone screw assembly includes a receiver, a shank, an articulation structure for retaining the shank in the receiver and a compression insert for engagement with a longitudinal connecting member such as a rod. The articulation structure includes substantially spherical convex and concave surfaces that slidably engage both shank and receiver surfaces to provide compound articulation between the receiver and the shank. The receiver includes inwardly directed spring tabs engaging the insert and prohibiting rotation of the insert within the receiver.
    Type: Application
    Filed: July 31, 2012
    Publication date: October 17, 2013
    Inventor: Roger P. Jackson
  • Patent number: 8556941
    Abstract: A method of treating a spinal column shape deformation includes fixing at least two fixation screw assemblies to respective vertebrae, sliding a rod between the arm extensions on each of the fixation screw assemblies, swinging the channels of the screw assemblies relative to the fixation screws so that the channels become less inclined to the axes of the fixation screws, and so that the rod is located generally posteriorly of the spinal column, locking the channel against swinging relative to the screw, rotating the rod about its axis relative to at least one of the channels, and locking the rod against movement relative to the channel.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: October 15, 2013
    Assignee: DePuy Synthes Products, LLC
    Inventor: John Hutchinson
  • Patent number: 8556938
    Abstract: A polyaxial bone screw assembly includes a threaded shank body having an integral upper portion receivable in a receiver, the receiver having an upper channel for receiving a longitudinal connecting member and a lower cavity cooperating with a lower opening. The upper portion expands a retaining member in the receiver cavity to capture the shank upper portion in the receiver. In some embodiment either the retaining member or an insert provide for a friction fit of the shank upper portion in the receiver resulting in non-floppy placement of the shank with respect to the receiver. Some retainers and inserts have a lock-and-release feature. Final locking of the polyaxial mechanism is provided by frictional engagement between the shank upper portion and the retaining member. A pre-assembled receiver, retaining member and optional insert may be popped-on or snapped-on to the shank upper portion prior to or after implantation of the shank into a vertebra.
    Type: Grant
    Filed: October 5, 2010
    Date of Patent: October 15, 2013
    Inventors: Roger P. Jackson, James L. Surber
  • Patent number: 8556904
    Abstract: One nonlimiting embodiment is directed to an anchor extender releasably engaged with an anchor configured for engagement with one or more bones or bony portions. The anchor extender generally includes a first member and a second member positioned about and movable relative to the first member. The anchor extender is positionable adjacent the anchor and movement of the second member relative to the first member toward the anchor as the anchor extender is engaged with the anchor results in lateral displacement of the anchor extender relative to the anchor while the first member engages with a first side of the anchor and the second member engages with an opposite second side of the anchor. However, in other embodiments, different forms and applications are envisioned.
    Type: Grant
    Filed: May 5, 2011
    Date of Patent: October 15, 2013
    Assignee: Warsaw orthopedic, Inc.
    Inventors: Alan Rezach, Jason Michael May
  • Patent number: 8551146
    Abstract: A fastener assembly for a spinal fixation system that is particularly useful in treatment of pediatric and small-statured patients includes a fastener, an attachment member, and a locking member. The fastener has a lower portion for contacting a bone and an upper portion integral with the lower portion. The upper portion has two open channels. Each channel is configured and dimensioned to receive a portion of a longitudinal or connecting member along its circumference. The attachment member is positionable on the fastener and at least partially covers the channel that receives the longitudinal or connecting member. The locking member is operatively associated with the upper portion of the fastener and secures the attachment member and the longitudinal or connecting member to the fastener.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: October 8, 2013
    Assignee: DePuy Synthes Products, LLC
    Inventors: Kris G. Kumar, Balaji S. Ramamurti, Barclay R. Davis, Thomas J. Runco
  • Patent number: 8545541
    Abstract: An improved system and method for positioning screws and rods to immobilize bones is provided. Specifically, the system and method is optimal for performing transforaminal lumbar interbody fusion (TLIF) and other interbody fusions in the spine. The system involves pedicle screws detachably connected to wires that guide rods down to the screws. The wires are strong, narrow, flexible, adjustable in tension, and easily disconnected from the screws after rod placement via a process such as cutting, radiating, burning, dissolving, etc.. The use of wires to place the rods avoids the conventional bulky tower apparatuses of the prior art while at the same time enhancing the accuracy of placement. One of the preferred methods involves relying upon the natural lordotic curvature of the spine and the narrow diameter of the wires to insert many elements through a single minimally invasive incision.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: October 1, 2013
    Inventor: Sherwin Hua
  • Publication number: 20130253595
    Abstract: A procedure for implanting a bone anchor which has thread characteristics on the distal shaft adjacent the tip suitable for engaging bone cement and different thread characteristics on the proximal shaft adjacent the head suitable to engage and secure the anchor to natural cancellous and cortical bone. The thread on the distal shaft is designed to engage and secure the anchor to bone cement embedded within the bone without fracture of the bone cement. In particular embodiments, the distal shaft bears two threads which merge to form a single proximal thread on the proximal shaft, the distal threads having half the pitch of the proximal thread.
    Type: Application
    Filed: March 29, 2012
    Publication date: September 26, 2013
    Applicant: SPARTEK MEDICAL, INC.
    Inventors: James F. Zucherman, Ken Y. Hsu, Charles J. Winslow, Steven T. Mitchell
  • Publication number: 20130253594
    Abstract: A bone anchor which has thread characteristics on the distal shaft adjacent the tip suitable for engaging bone cement and different thread characteristics on the proximal shaft adjacent the head suitable to engage and secure the anchor to natural cancellous and cortical bone. The thread on the distal shaft is designed to engage and secure the anchor to bone cement embedded within the bone without fracture of the bone cement. In particular embodiments, the distal shaft bears two threads which merge to form a single proximal thread on the proximal shaft, the distal threads having half the pitch of the proximal thread.
    Type: Application
    Filed: March 29, 2012
    Publication date: September 26, 2013
    Applicant: SPARTEK MEDICAL, INC.
    Inventors: James F. Zucherman, Ken Y. Hsu, Charles J. Winslow, Steven T. Mitchell
  • Patent number: 8540756
    Abstract: According to one embodiment, a fastener includes a shank defined about a central axis and a head coupled to the shank. The head includes a continuous receptacle circumscribing the central axis. The continuous receptacle includes a radially inner surface that is angled radially inwardly toward the central axis in a head-to-shank direction.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: September 24, 2013
    Assignee: Ortho Vation Medical LLC
    Inventors: Russell G. Olsen, Steven S. Ramboz
  • Publication number: 20130245702
    Abstract: A spinal implant system includes a first member comprising walls that include a first end surface defining a first locking cavity, a second end surface and an outer surface extending therebetween. A second member includes a first arm having an inner surface that defines a first cavity and a second arm having an inner surface that defines a second cavity. The inner surface of the first arm includes a first projection disposable in the first cavity and the inner surface of the second arm includes a second projection disposable in the second cavity. A third member includes a first extension having an inner surface that defines a first cavity and a second extension having an inner surface that defines a second cavity. The third member is configured for axial translation relative to the second member between a first orientation and a second orientation. Methods of use are disclosed.
    Type: Application
    Filed: March 19, 2012
    Publication date: September 19, 2013
    Applicant: WARSAW ORTHOPEDIC, INC.
    Inventor: Larry McBride
  • Patent number: 8535356
    Abstract: A plate system and method comprising a plate and a screw having an integral resilient lock. The screw comprises a head that has a portion that is adapted to be compressible as it is screwed into bone using a tool. After the screw head is received in the plate and the tool is removed therefrom, the screw head decompresses or expands into a locking or receiving area, thereby locking the screw in the plate. The plate is adapted to have at least one or a plurality of detents or lips for cooperating with at least a portion of the screw head to retain the screw in the plate and prevent it from withdrawing therefrom.
    Type: Grant
    Filed: November 4, 2009
    Date of Patent: September 17, 2013
    Assignee: X-spine Systems, Inc.
    Inventor: David Louis Kirschman
  • Publication number: 20130231708
    Abstract: A bone screw and method of inserting a bone screw into a bone is disclosed. In one example, the bone screw includes a tip segment for creating a starter hole in the bone. A pilot segment is located proximally of the tip segment for creating a pilot hole in the bone after creation of the starter hole. A threaded segment is located proximally of the pilot segment for fixedly securing the bone screw in the bone. A head is located proximally of the threaded segment for allowing a surgical rod to be fixedly secured to the bone screw.
    Type: Application
    Filed: April 8, 2013
    Publication date: September 5, 2013
    Applicant: WARSAW ORTHOPEDIC, INC.
    Inventor: Anthony J. Melkent
  • Publication number: 20130231707
    Abstract: A closed-head polyaxial screw for use in spinal instrumentation for spinal fusion, treatment of deformity, or the like. Polyaxial screws may have a two-part design, with the screw fitting into an aperture in the closed head. One or more clamps may secure the bone screw in the aperture. A closed-head polyaxial screw having a one part design is also disclosed. In addition, a one-part monaxial screw is described.
    Type: Application
    Filed: March 1, 2012
    Publication date: September 5, 2013
    Inventors: Brad Juchno, Milan George
  • Patent number: 8523922
    Abstract: A device for attaching an elongated member to a vertebral member and provide for dampened movement of the elongated member. The device may include a receiver that receives an elongated member. The receiver may be movably attached to an anchor that may be attached to a vertebral member. A dampener may be positioned within the receiver. Further, one or more slots may be positioned in the receiver. The dampener and/or slots dampen the translational movement of the receiver and attached elongated member relative to the anchor in first and second directions, and may also buffer forces applied into the spine.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: September 3, 2013
    Assignee: Warsaw Orthopedic
    Inventors: Jason May, Joshua Simpson
  • Publication number: 20130226243
    Abstract: A pedicle screw has a screw shaft and a screw head connected thereto. The screw head has a center longitudinal axis extending in an X-direction. The screw further has a recess for receiving a connecting rod with a circular cross-section, a fixing screw that is used to fix the connecting rod in the screw head, a clamping unit between the fixing screw and a head base and an intermediate element.
    Type: Application
    Filed: October 29, 2012
    Publication date: August 29, 2013
    Inventor: Kilian KRAUS
  • Patent number: 8518090
    Abstract: Bone plate system, including methods and apparatus, for attaching a fastener to a bone plate at a selectable angle. In an exemplary method, a bone plate and a fastener may be selected. The bone plate may define an aperture having an internal thread. The fastener may include a proximal region and a distal region. The proximal region may be tapered conically toward the distal region. The fastener may be disposed in the aperture and in bone, such that the serrated thread is cross-threaded with the internal thread to create an interference fit and locked engagement of the proximal region with the aperture.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: August 27, 2013
    Assignee: Acumed LLC
    Inventors: Randall J. Huebner, David W. Van Vleet, Rudolph A. Ventura, Jennifer R. Zuba
  • Publication number: 20130218214
    Abstract: A screw head design, usable for composite material bone screws, in which compression forces applied to the screw head are reduced by one or more of location, size and/or shape of screw head design. In some embodiments, load bearing recesses are located closer to an outer circumference of a screw head than to its central axis.
    Type: Application
    Filed: March 28, 2013
    Publication date: August 22, 2013
    Applicant: Carbofix Orthopedics Ltd.
    Inventor: Carbofix Orthopedics Ltd.
  • Publication number: 20130218212
    Abstract: A polyaxial bone screw assembly includes, a threaded shank body having an integral upper portion receivable in a receiver, the receiver having an upper channel for receiving a longitudinal connecting member and a lower cavity cooperating with a lower opening. A retaining member for capturing the shank in the receiver includes a sloping surface for a frictional, press fit, cammed engagement with the shank. A compression insert having a resilient structure provides non-floppy positioning of the shank with respect to the receiver and also independent locking of the shank with respect to the receiver.
    Type: Application
    Filed: May 12, 2011
    Publication date: August 22, 2013
    Inventor: Roger P. Jackson
  • Publication number: 20130218213
    Abstract: A bone screw including a housing including a threaded opening defined between first and second legs extending from a base portion of the housing, and a threaded closure member configured to be threaded into the threaded opening of the housing between the first and second legs to secure a connecting member in a channel of the housing. The threaded closure member includes a first thread and a second thread intertwined with the first thread, and the threaded opening includes a first discontinuous thread and a second discontinuous thread intertwined with the first discontinuous thread.
    Type: Application
    Filed: February 20, 2013
    Publication date: August 22, 2013
    Applicant: ZIMMER SPINE, INC.
    Inventor: Zimmer Spine, Inc.
  • Publication number: 20130211465
    Abstract: A pedicle screw assembly and method of assembly are disclosed. The pedicle screw assembly includes a bone fastener having a head at a proximal end and a threaded portion extending between the proximal end and a distal end. The assembly also includes a compression member having a conical inner surface and a locking member having an outer surface adapted to mate with the conical inner surface of the compression member. The assembly may also have an elongated member and a set screw that has a threaded portion. The assembly may also have a receiving housing having a central bore extending from a threaded proximal end to a distal end and a U-shaped cavity positioned perpendicular to the central bore and configured to receive the elongated member.
    Type: Application
    Filed: October 5, 2011
    Publication date: August 15, 2013
    Inventor: Daniel S. Savage
  • Patent number: 8506610
    Abstract: A receiving part for receiving a rod for coupling the rod to a bone anchoring element, the receiving part including: a receiving part body including a rod receiving portion with a channel for receiving a rod, and a head receiving portion for accommodating a head of a bone anchoring element, the head receiving portion having an open end and being flexible for inserting and clamping of the head; a locking ring around the head receiving portion to exert a first force onto the head receiving portion to lock the head therein; and a pre-locking ring separate from the locking ring and around the head receiving portion to exert a second force less than the first force onto the head receiving portion to clamp the head in a temporary pre-locking position.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: August 13, 2013
    Assignee: Bierdermann Technologies GmbH & Co. KG
    Inventors: Lutz Biedermann, Wilfried Matthis, Berthold Dannecker
  • Patent number: 8506601
    Abstract: A coupling device for securing an elongate member to the spine is provided. The coupling device comprises a compressible inner member that secures an anchor member therein when the inner member is axially shifted within an outer member. The elongate member is retained within the device by an axially inserted locking member, and may be secured independently of the anchor member. The coupling device and anchor may be configured to provide increased angulation of the anchor with respect to the coupling device. For instance, anchor member may have an offset head portion in order to provide normal pivoting of the coupling device when the anchor is attached to bone at an angle.
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: August 13, 2013
    Assignee: Pioneer Surgical Technology, Inc.
    Inventors: Matthew P. Gephart, Troy D. Knapp, Phillip J. Berman
  • Patent number: 8506611
    Abstract: A bone anchoring device includes a receiving part for receiving a rod, the receiving part has a first bore coaxial with a longitudinal axis and a second bore, and an anchoring element having a first end for insertion into the bone and a second end positionable within a second bore, the anchoring element being movable relative to the receiving part in limited angular range about the longitudinal axis, the angles lying in a single plane. The bone anchoring device further includes a fixation element cooperating with the receiving part to lock the anchoring element relative to the receiving part. The anchoring element is pivotable relative to the receiving part around one rotational axis transverse to the longitudinal axis.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: August 13, 2013
    Assignee: Biedermann Technologies GmbH & Co. KG
    Inventors: Lutz Biedermann, Wilfried Matthis
  • Patent number: 8506608
    Abstract: An orthopedic screw is used in a fixation device for treating fractures. The device has a body with holes to accept the bone screws. The bone screws have a layer of bioresorbable material on the shaft. Engagement between the bone screws and the body is initially through the bioresorbable material, which engagement rigidly fixes the relative angular orientation between the bone screws and the body when the device is applied to a bone. As the bioresrobable material is resorbed the angular relation between the bone screws and the body is no longer rigidly fixed, thereby effecting a transformation from rigid osteosynthesis to flexible osteosynthesis to allow micromotion between the bone fragments which promotes healing.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: August 13, 2013
    Inventors: Douglas Cerynik, Susan P. Harding
  • Publication number: 20130204309
    Abstract: A biocompatible interference screw for soft tissue or bone-to-bone fixation comprises a screw body extending from a screw head to a distal tip of the screw. The screw body has an outer surface, and comprises polyether-ether-ketone (PEEK) material. Advantageously, the body outer surface has a textured surface finish for substantially improving pull-out strength of the interference screw. The textured surface finish is textured, in preferred embodiments, with a minimum of approximately 16 micro inches of surface roughness. The screw head comprises a tapered square keyhole for receiving a distal end of a driver instrument. The screw comprises a series of threads, which have a relatively smooth profile, in order to prevent graft tissue laceration as the screw is being inserted. The distal tip of the screw body comprises a narrow tip, and a distal end of the screw body is angled inwardly toward the narrow distal tip.
    Type: Application
    Filed: March 14, 2013
    Publication date: August 8, 2013
    Applicant: Cayenne Medical, Inc.
    Inventors: Jordan A. Hoof, Kevin N. Baird, Derek J. Harper
  • Patent number: 8500782
    Abstract: A fixation plate system includes a plate with elongated slots, and first and second anchors for attaching the plate to vertebrae. The first and second anchors have different head configurations that are selected by the surgeon to control how settlement occurs at each fused segment. The head of the first fastener is insertable in any of the slots and resists translation. The head of the second fastener is insertable in any of the slots in free sliding engagement to allow translation of the head in that slot. In one method of use, the surgeon selects a segment where settling needs to be limited, and uses the first fastener to fix the plate near the segment and limit settling at that segment. The first and second fasteners have a built-in spring that assists in securing the fasteners in the plate.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: August 6, 2013
    Assignee: Aesculap Implant Systems, LLC
    Inventors: Matthew Kovach, David W. Wimberley, Scott Leary, Paul Weaver, Andrea Peukert
  • Patent number: 8500784
    Abstract: A bone fixation element comprises a shaft extending longitudinally from a proximal end to a distal end and a head connected to the proximal end of the shaft. The head includes a radially outer abutting structure deformable to lockingly engage an inner wall of an opening through a bone plate. Deformation of the abutting structure permits the head to lock the bone fixation element within the opening at any user-selected angle with respect to a central axis of the opening within a permitted range of angulation.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: August 6, 2013
    Assignee: Depuy Synthes Products, LLC
    Inventors: Urs Hulliger, Robert Frigg
  • Patent number: 8496694
    Abstract: A buttress pin for fixing an implant to a bone, comprises a head at a proximal end, the head comprising a rounded outer profile and including first threading and a shaft extending distally from the head, the shaft including second threading extending over at least a portion of a length thereof, a position of a proximal end of the second threading along the shaft being spaced from a distal end of the first threading by a distance equal to a distance between a proximal end of a hole in an implant to be anchored to a bone via the buttress pin and a surface of the bone when the implant is in a target position on the bone.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: July 30, 2013
    Assignee: Depuy Synthes Products, LLC
    Inventors: Adam Hashmi, Dirk Kerstan
  • Publication number: 20130190825
    Abstract: In one aspect, a bone anchor assembly is provided having a bone anchor with a head, a resilient locking cap extending about a portion of the bone anchor head, and a cap drive member having a depending annular wall. The annular wall and locking cap have engagement surfaces configured to engage and expand the locking cap as the cap drive member is shifted from an unlocked to a locked position. In another form, a bone plate system is provided including a bone plate having an elongated throughbore and a resilient support member received therein. The support member has an opening sized to receive a bone anchor head and an actuator device carried thereon. The bone plate and support member have interfering portions configured to be shifted to a locked orientation to lock the support member and the bone anchor head at an axial position in the throughbore.
    Type: Application
    Filed: December 21, 2012
    Publication date: July 25, 2013
    Applicant: PIONEER SURGICAL TECHNOLOGY, INC.
    Inventor: Pioneer Surgical Technology, Inc.
  • Publication number: 20130184765
    Abstract: A bone repair kit, comprising: (a) a composite material bone plate having at least one hole; and (b) at least one fixation component sized for locking in said hole and having a head, wherein said head has a geometry including at least one protrusion, which geometry does not match a geometry of said hole. This mismatch can support locking at a range of angles, such as 5-15 degrees between the fixation component and an axis of the hole.
    Type: Application
    Filed: January 16, 2013
    Publication date: July 18, 2013
    Applicant: Carbofix Orthopedics Ltd.
    Inventor: Carbofix Orthopedics Ltd.
  • Publication number: 20130184770
    Abstract: A bone screw that is a low-profile, uniplanar bone screw is provided. The bone screw is for adjusting a position of a rod. The bone screw includes a main body, a rocker and a rod-securing element. The main body has a shaft with a threaded part. The rocker is coupled to and moveable relative to the main body. The rocker is configured to at least partially receive the rod. The rod-securing element is configured to secure the rod between the rocker and the rod-securing element and relative to the main body. The rod-securing element includes a fulcrum serving as an axis of rotation about which the rod rotates.
    Type: Application
    Filed: June 9, 2011
    Publication date: July 18, 2013
    Inventor: Glenn R. Buttermann
  • Publication number: 20130172889
    Abstract: An intramedullary fixation assembly for bone fusion includes a first member positioned at a proximal end of the intramedullary fixation assembly, and a second member positioned at a distal end of the intramedullary fixation assembly. The first member is slideably coupled to the second member and provides for an interference fit with the second member. The intramedullary fixation assembly includes an optional cannulated threaded screw member having a plurality of threads on an external surface of the threaded screw member.
    Type: Application
    Filed: December 7, 2012
    Publication date: July 4, 2013
    Applicant: EXTREMITY MEDICAL, LLC
    Inventor: EXTREMITY MEDICAL, LLC
  • Patent number: 8475500
    Abstract: A spinal fixation system includes a rod and anchor devices that include a bone engaging fastener having a head defining a spherical socket. A ball insert is placed within the socket and rotated so that the ball insert is juxtaposed with the socket. The anchor device further includes a yoke defining a yoke channel for receiving the rod and a stem engaged to the ball insert captured within the socket. A sleeve disposed between the yoke channel and the fastener head supports the rod. A set screw is operable to clamp the rod against the sleeve and draw the insert into engagement within the socket. A releasable detent defined between the yoke and the fastener head is configured to releasably retain the yoke in at least one discrete position relative to the fastener. Portions of the releasable detent may also exert a frictional retention force against the fastener head.
    Type: Grant
    Filed: June 14, 2007
    Date of Patent: July 2, 2013
    Assignee: Spine Wave, Inc.
    Inventor: Robert Potash
  • Patent number: 8470009
    Abstract: A bone fastener comprises a proximal portion including an inner surface that defines a cavity. A carrier is disposed in fixed engagement with the inner surface. A pivoting member is disposed with the carrier and relatively moveable therefrom. A distal portion defines a longitudinal axis and is configured to penetrate tissue. The proximal portion is rotatable relative to the distal portion in a first plane of a body and the pivoting member is rotatable relative to the proximal portion in a second plane of the body. Methods of use are disclosed.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: June 25, 2013
    Assignee: Warsaw Orthopedic, Inc.
    Inventor: William Alan Rezach
  • Publication number: 20130158553
    Abstract: An intramedullary nail includes a body sized and shaped for insertion into a medullary canal of a bone and extending along a longitudinal axis from a proximal end to a distal end and a channel extending through the body along the longitudinal axis in combination with a locking hole extending laterally through the body along a central axis and in communication with the channel, the locking hole defined by a first opening extending through a first portion of a wall of the nail and a second opening extending through a second portion of the wall substantially opposing the first portion, the first opening being elongated in a lateral direction relative to the longitudinal axis of the nail and the second opening including a coupling element configured to lock a portion of a bone fixation element therein.
    Type: Application
    Filed: October 9, 2012
    Publication date: June 20, 2013
    Applicant: SYNTHES USA, LLC
    Inventor: SYNTHES USA, LLC
  • Publication number: 20130158609
    Abstract: A bone fixation device includes a first element extending from a first head to a first shaft along a first longitudinal axis and having a first channel extending therethrough. The first head rests against a portion of bone adjacent to a first hole through which the first shaft is inserted. A second element includes a second shaft extending along a second longitudinal axis to a second head and having a second channel extending therethrough, the second head resting against a portion of bone adjacent to a second hole through which the second shaft is inserted. The second channel is dimensioned to receive the first shaft therein. A tensioning element is insertable through the first and second channels so that tension applied at a second end thereof imparts a compressive force to the a bone into which the first and second elements are inserted.
    Type: Application
    Filed: December 4, 2012
    Publication date: June 20, 2013
    Applicant: SYNTHES USA, LLC
    Inventor: SYNTHES USA, LLC
  • Publication number: 20130144346
    Abstract: A polyaxial bone screw assembly includes a threaded shank body having an integral upper portion receivable in a one-piece receiver, the receiver having an upper channel for receiving a longitudinal connecting member and a lower cavity cooperating with a lower opening. A down-loadable, friction fit compression insert (some with lock and release feature), a down-loadable two-piece, interconnected retaining ring articulatable with respect to the receiver and an up-loadable shank upper portion cooperate to provide for assembly of the shank with the receiver either prior to or after implantation of the shank into a vertebra.
    Type: Application
    Filed: January 22, 2013
    Publication date: June 6, 2013
    Inventors: Roger P. Jackson, James L. Surber
  • Publication number: 20130144345
    Abstract: A bone fixation device comprises an elongated body extending from a head at a proximal end to a shaft at a distal end along a central longitudinal axis. A slotted opening extends distally into the head by a predetermined distance, the opening defining a spring portion on a lateral side thereof, the spring portion being biased toward the central longitudinal axis and configured to be deflectable away from the central longitudinal axis upon application of a radially expansive force thereto.
    Type: Application
    Filed: November 30, 2012
    Publication date: June 6, 2013
    Applicant: SYNTHES USA, LLC
    Inventor: SYNTHES USA, LLC
  • Publication number: 20130144347
    Abstract: A closure for an open headed medical implant, such as a bone screw. The closure having a cylindrical body having an axis of rotation and also having a radially outer surface with a thread or other guide and advancement structure thereon. The body having a plurality of apertures that open onto a top surface of the body and that are parallel to but spaced from the axis of rotation. The closure also has a break-off head centrally attached by a neck to the top surface of the body.
    Type: Application
    Filed: January 23, 2013
    Publication date: June 6, 2013
    Inventor: Roger P. Jackson
  • Patent number: 8454658
    Abstract: A bone anchoring device for a spinal column fixation system includes an anchoring part, a bearing part for mounting at least one connection element thereon and a fixing element. The connection element is adapted for fixing to at least two bone anchoring devices. The anchoring part and the bearing part are mounted on each other, movable relative to each other in an assembly position and fixable relative to each other by the fixing element in an implantation position. The fixing element is of integral construction and has a proximal fixing element section, a distal fixing element section and a predetermined break-off area formed between the proximal and distal fixing element sections. The distal fixing element section has a receptacle for engagement with a tool for transferring the bone anchoring device from the assembly position to the implantation position. The device may be part of an improved spinal column fixation system.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: June 4, 2013
    Assignee: Aesculap AG
    Inventor: Stephan Lindner