Head Structure Patents (Class 606/305)
  • Publication number: 20130138158
    Abstract: Polyaxial bone anchor assemblies include a shank having an upper portion and a retainer for holding the shank upper portion in a receiver. The shank upper portion retainer interface is one of conical, cylindrical or curvate and may further include a radial ridge or undercut. The assemblies may include compression inserts.
    Type: Application
    Filed: January 22, 2013
    Publication date: May 30, 2013
    Inventor: Roger P. Jackson
  • Publication number: 20130138161
    Abstract: A polyaxial bone screw assembly includes a threaded shank body having an integral upper portion receivable in a receiver and retained within the receiver by a retaining structure in the form of an open ring. The receiver has a U-shaped channel for receiving a spinal fixation rod. The shank upper portion is designed to directly frictionally engage the spinal fixation rod when a closure structure operably urges the rod toward the upper portion, fixing the bone screw shank body in a selected angular orientation with respect to the receiver.
    Type: Application
    Filed: January 23, 2013
    Publication date: May 30, 2013
    Inventor: Roger P. Jackson
  • Publication number: 20130138157
    Abstract: Polyaxial bone anchor assemblies include a shank having an upper portion and a retainer for holding the shank upper portion in a receiver. The shank upper portion retainer interface is one of conical, cylindrical or curvate and may further include a radial ridge or undercut. The assemblies may include compression inserts.
    Type: Application
    Filed: January 22, 2013
    Publication date: May 30, 2013
    Inventor: Roger P. Jackson
  • Publication number: 20130138159
    Abstract: Polyaxial bone anchor assemblies include a shank having an upper portion and a retainer for holding the shank upper portion in a receiver. The shank upper portion retainer interface is one of conical, cylindrical or curvate and may further include a radial ridge or undercut. The assemblies may include compression inserts.
    Type: Application
    Filed: January 22, 2013
    Publication date: May 30, 2013
    Inventor: Roger P. Jackson
  • Patent number: 8449578
    Abstract: The present teachings provide one or more surgical implements for repairing damaged tissue, such as in the case of a spinal fixation procedure. A multiplanar bone anchor system for a fixation procedure is provided. The system can include a bone fastener. The bone fastener can include a head and a second end adapted to engage an anatomy. The bone fastener can extend along a longitudinal axis. The system can also include a coupling arrangement coupled to the head of the bone fastener so that the bone fastener is rotatable about the longitudinal axis to define a first plane of motion. The system can further include a saddle, which can be coupled to the coupling arrangement. The saddle can be movable relative to at least one of the bone fastener and the coupling arrangement to define a second plane of motion.
    Type: Grant
    Filed: November 9, 2009
    Date of Patent: May 28, 2013
    Assignee: EBI, LLC
    Inventors: Matthew L. Keiser, Laurie G. Sanders, Christopher Shaffrey
  • Publication number: 20130131734
    Abstract: A pedicle screw assembly having an axial load element engaging the structure joining the screw and the rod retainer. The axial load element generally holds the rod retainer in place with respect to the screw, while allowing manual movement when desired. In one embodiment, the pedicle screw assembly includes a ball-and-socket joint joining the screw head to the rod retainer. The assembly may include a saddle configured to secure a ball at the head of the screw within a socket in the rod retainer. The saddle may provide resilient compression in the axial direction. For example, the saddle may include a pair of axially-offset slots that extend partially across the saddle from opposite sides to define a bridge section. The resiliency of the saddle may be controlled by varying the characteristics of the slots and consequently the bridge section.
    Type: Application
    Filed: November 23, 2011
    Publication date: May 23, 2013
    Applicant: VEROS MCM, LLC
    Inventors: Aaron M. Longtain, Jeremy L. Longtain
  • Patent number: 8444682
    Abstract: A mechanism to connect the supporting portions of orthopaedic implants such as in the head, spine, upper limb and lower limb and thereby prevent loosening and fretting at the implant interface of an orthopaedic implant construct has been developed based on shape memory effect and super-elasticity of shape memory materials such as nickel-titanium (nitinol or NiTi) shape-memory-alloy, without the use of typical threaded fastening technique. Advantages are conferred by making the entire device, not just connecting pieces, out of shape memory alloy and having shape memory effect and super-elasticity. Heating the memory head of the device will compress the connection portion without the use of an auxiliary device (e.g. coupling member) so that the connection portion can be completely clamped down by the memory head.
    Type: Grant
    Filed: September 11, 2007
    Date of Patent: May 21, 2013
    Assignee: The University of Hong Kong
    Inventors: Kelvin Wai Kwok Yeung, William Weijia Lu, Keith Dip Kei Luk, Kenneth Man Chee Cheung
  • Patent number: 8444681
    Abstract: A polyaxial bone screw assembly includes a threaded shank body having an integral upper portion receivable in an integral 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 compression insert with tool receiving arm extensions, a down-loadable friction fit split retaining ring and an up-loadable shank upper portion cooperate to provide for pop- or snap-on assembly of the shank with the receiver either prior to or after implantation of the shank into a vertebra. The shank and receiver once assembled cannot be disassembled.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: May 21, 2013
    Inventors: Roger P. Jackson, James L. Surber
  • Publication number: 20130123861
    Abstract: A polyaxial bone anchoring device includes a bone anchoring element having a shank and a head, a head receiving part having a first end, an open second end, and a hollow interior portion for receiving the head therein, a locking ring configured to be mounted around the head receiving part and having a rod receiving portion, a cap configured to be connected to the head receiving part, the cap having a central axis and two opposite legs extending in a direction of the central axis, and a locking element configured to extend from the cap to lock relative positions of the bone anchoring element and an inserted rod relative to the head receiving part, wherein the cap is rotatable relative to the head receiving part between a first position in which the cap is movable and a second position in which the legs engage the head receiving part.
    Type: Application
    Filed: November 9, 2012
    Publication date: May 16, 2013
    Applicant: Biedermann Technologies GmbH & Co. KG
    Inventor: Biedermann Technologies GmbH & Co. KG
  • Publication number: 20130123923
    Abstract: An implant includes a body sized and shaped for insertion into a facet joint, the implant including a first bone fixation element receiving opening extending through a portion thereof along a first axis oriented so that, when the implant is received within a facet joint in a desired configuration, a bone fixation element inserted into the first bone fixation element receiving opening will extend into a first one of the vertebra forming the facet joint.
    Type: Application
    Filed: May 7, 2012
    Publication date: May 16, 2013
    Inventors: Paul PAVLOV, Tom Overes, Robert Frigg, Philippe Lindenmann
  • Publication number: 20130123860
    Abstract: A polyaxial bone anchoring device includes a bone anchoring element having a shank and a head, a head receiving part having a first end, an open second end, and a hollow interior portion in communication with the open second end for receiving the head therein, the head receiving part being flexible for clamping the head, a locking ring configured to be mounted around the head receiving part and having a rod receiving portion, a cap configured to be connected to the head receiving part, and a locking element configured to extend from the cap to engage an inserted rod, wherein the head is pivotable in and the cap and the locking ring are rotatable relative to the head receiving part, and wherein when the locking element is tightened, an inserted rod and an angular position of the bone anchoring element are locked relative to the head receiving part.
    Type: Application
    Filed: November 9, 2012
    Publication date: May 16, 2013
    Applicant: BIEDERMANN TECHNOLOGIES GMBH & CO. KG
    Inventor: Biedermann Technologies GmbH & Co. KG
  • Publication number: 20130123858
    Abstract: A multiaxial pedicle screw for vertebral osteosynthesis, including: a pedicle screw comprising a spherical head having a recess for the rotation of said pedicle screw; a socket that is hinged onto the spherical head of the pedicle screw and is provided with two diametrically opposed side grooves for receiving a connection rod; a tightening means for maintaining the position of the connection rod that is engaged into said socket; and a locking means that is positioned between said spherical head of the pedicle screw and the socket. The locking means is formed of a ring, at least the base or distal portion of which consists of a cold-compactible material having a resilient deformation capacity. Said locking means enables the locking of the socket in a desirable direction relative to the spherical head of the pedicle screw according to the position of the pedicle screw after the anchoring thereof.
    Type: Application
    Filed: February 16, 2011
    Publication date: May 16, 2013
    Applicant: SMARTSPINE
    Inventor: David Attia
  • Publication number: 20130123859
    Abstract: An orthopedic fixation system, including a tissue anchor including a first instrument engagement feature and a second instrument engagement feature; a first tool engageable with the first instrument engagement feature, and a second tool engageable with the second instrument engagement feature, where the first and second tools are engageable simultaneously with the tissue anchor.
    Type: Application
    Filed: November 1, 2012
    Publication date: May 16, 2013
    Inventors: Jeffrey GROSS, Ryan SINGH, J. Scott HAY
  • Patent number: 8439958
    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: Grant
    Filed: October 11, 2011
    Date of Patent: May 14, 2013
    Inventor: Roger P. Jackson
  • Publication number: 20130110176
    Abstract: An implant assembly and a method of assembling the same are provided, the implant assembly including a receiver extending along a central longitudinal axis between a proximal end and an opposite distal end, the receiver including a distal portion defining a receptacle opening at the distal end and a pair of arms extending from the distal portion along the central longitudinal axis on opposite sides of a passage with the passage opening at opposite sides of the receiver, a bone anchor including a distal bone engaging portion and a head at a proximal end of the distal bone engaging portion, the head being positioned in the receptacle with the bone engaging portion in a selected orientation relative to the central longitudinal axis of the receiver and a connector member configured to form a rigid interface between the receiver and the head of the bone anchor thereby providing torque transfer throughout the implant assembly.
    Type: Application
    Filed: November 2, 2011
    Publication date: May 2, 2013
    Applicant: WARSAW ORTHOPEDIC, INC.
    Inventors: William Alan Rezach, Harold S. Taylor, Andrew Taylor
  • Publication number: 20130110177
    Abstract: The fastening system consists of the polyaxial ball and socket joint used in conjunction with a bone screw having threads on one end for use in anchoring to the spine and a spherical connector on the other end operating as a pivot point about which a connecting assembly moves in a polyaxial fashion. A substantially U-shaped connecting assembly has a lower receptacle that operates as a socket for housing a retainer ring within a retaining ring groove.
    Type: Application
    Filed: February 15, 2012
    Publication date: May 2, 2013
    Inventors: Robert L. Doubler, John E. Hammill, SR.
  • Publication number: 20130110178
    Abstract: A polyaxial bone anchoring device includes a bone anchoring element having a shank and a head, a receiving part having a first end and a second end, a central axis, a first bore, a second bore, and a first support surface between the first bore and the second bore that is substantially perpendicular to the central axis, and an insert piece having a seat for pivotably holding the head, a bounding edge, and a second support surface configured to engage the first support surface to support the insert piece when mounted to the receiving part, the second support surface formed by a projection at an end of the insert piece opposite the bounding edge, wherein the insert piece projects out of the second bore and is rotatable, and is configured to permit the bone anchoring element to pivot at a larger angle at a first location of the bounding edge.
    Type: Application
    Filed: October 29, 2012
    Publication date: May 2, 2013
    Applicant: BIEDERMANN TECHNOLOGIES GMBH & CO. KG
    Inventor: Biedermann Technologies GmbH & Co. KG
  • Publication number: 20130110179
    Abstract: Provided is a spinal fixation system including a taper lock screw including an inner housing and an outer housing that are translatable relative to one another to transition the taper lock screw between a locked position and an unlocked position. A locking device releasably connects to and operationally interacts with a flange of the taper lock screw. An unlocking device releasably connects to and operationally interacts with inner housing unlocking tool receptors of the taper lock screw to unlock the taper lock screw.
    Type: Application
    Filed: December 12, 2012
    Publication date: May 2, 2013
    Applicant: K2M, INC.
    Inventor: K2M, Inc.
  • Patent number: 8430917
    Abstract: A bone anchor assembly is provided, which may be used in cervical, thoracic, lumbar or sacral areas of the spine or other orthopedic locations. The anchor assembly includes a bone anchor, a receiver mounted to the bone anchor, a saddle within the receiver, and an engaging member. The receiver extends along a central longitudinal axis proximally away from the bone anchor. A rod or other elongated connecting element is received in a passage of the receiver in contact with the saddle, and the engaging member engages the connecting element against the saddle, which engages the saddle against the proximal head of the bone anchor in the receiver. The orientation of the saddle in the receiver is adjustable to correspond to the orientation of the connecting element relative to the central longitudinal axis of the receiver.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: April 30, 2013
    Assignee: Warsaw Orthopedic, Inc.
    Inventor: William Alan Rezach
  • Publication number: 20130103099
    Abstract: The present invention generally provides a polyaxial fixation device having a shank with a spherical head formed on a proximal end thereof, and a receiver member having an axial passage formed therein that is adapted to polyaxially seat the spherical head of the shank. The polyaxial bone screw further includes an engagement member that is adapted to provide sufficient friction between the spherical head and the receiver member to enable the shank to be maintained in a desired angular orientation before locking the spherical head within the receiver member.
    Type: Application
    Filed: October 22, 2012
    Publication date: April 25, 2013
    Applicant: DEPUY SPINE, INC.
    Inventor: DEPUY SPINE, INC.
  • Publication number: 20130103096
    Abstract: A bone fastener includes a receiver defining a longitudinal axis and extending between a proximal end and a distal end, the proximal end including a first wall and a second wall that define an implant cavity, each wall having a proximal face. At least one of the first wall and the second wall include an extension extending proximally from the proximal face along the longitudinal axis, the extension having a distal end integral with the proximal face and a proximal end including a first locking part configured for fixation with a second locking part of an instrument. A bone penetrating member has a proximal end and a distal end, the proximal end of the bone penetrating member being connected with the distal end of the receiver.
    Type: Application
    Filed: October 24, 2011
    Publication date: April 25, 2013
    Applicant: Warsaw Orthopedic, Inc.
    Inventor: Keith E. Miller
  • Publication number: 20130103098
    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 compression insert and a friction fit split retainer are located in the receiver providing pop- or snap-on assembly of the shank with the receiver either prior to or after implantation of the shank into a vertebra. Laterally located, spaced crimping apertures in the receiver press receiver walls into engagement with the insert to prohibit rotation of the insert with respect to the receiver.
    Type: Application
    Filed: November 20, 2012
    Publication date: April 25, 2013
    Inventors: Roger P. Jackson, James L. Surber
  • Publication number: 20130103097
    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: Application
    Filed: October 24, 2011
    Publication date: April 25, 2013
    Applicant: WARSAW ORTHOPEDIC, INC
    Inventors: Jason May, Joshua Simpson
  • Publication number: 20130096622
    Abstract: A polyaxial bone anchoring device includes an anchoring element having a shaft and a head, a receiving part having a first end and a second end, a bore extending from the first end towards the second end, a seat for receiving the head, and at least one threaded through hole transverse to the bore, a pressure element to exert pressure onto the head, such that the head is pivotable and can be locked at an angle relative to the receiving part, the pressure element having at least one hole configured to at least partially align with the through hole, and at least one set screw threadable into the through hole to engage the pressure element at the hole such that a force is exerted by the pressure element onto the head that maintains the head at an adjustable angular position relative to the receiving part by friction.
    Type: Application
    Filed: August 17, 2012
    Publication date: April 18, 2013
    Inventors: Timo Biedermann, Lutz Biedermann
  • Publication number: 20130096616
    Abstract: An anti-splay member is configured for engagement with a bone fastener and includes a body defining a longitudinal axis and a threaded cavity extending along the longitudinal axis. The cavity is configured for engagement with a screw. Opposing retainer members extend transversely from the body and are configured to engage a proximal end of the bone fastener to prevent radial expansion of the proximal end. At least one locking member extends from the body and is configured for engagement with the proximal end of the bone fastener. Methods of use are disclosed.
    Type: Application
    Filed: October 14, 2011
    Publication date: April 18, 2013
    Applicant: Warsaw Orthopedic, Inc.
    Inventor: Charles A. Dickinson
  • Publication number: 20130096620
    Abstract: A polyaxial bone anchoring device includes an anchoring element having a shank and a head, a receiving part having a first end and a second end, a central axis, and an accommodation space for accommodating the head, the accommodation space having an opening at the second end, a sleeve-like insert piece configured to be arranged around a portion of the head and to be arranged in and to pivot in the accommodation space, and a pressure member including a portion configured to exert pressure onto the head, wherein the anchoring element and insert piece are pivotable with respect to the receiving part such that respective angles formed by a central axis of the insert piece with the central axis of the receiving part and a central axis of the anchoring element are adjustable, and can be locked by exerting pressure with the pressure member onto the head.
    Type: Application
    Filed: August 15, 2012
    Publication date: April 18, 2013
    Inventors: Lutz Biedermann, Martin Meer
  • Publication number: 20130096635
    Abstract: A collar for extenders and an extender assembly including a collar is disclosed. The collar is configured to receive extenders and maintain the extenders in a parallel orientation so as to prevent splaying and premature beak-off of the extenders from the spine. Methods of use are disclosed.
    Type: Application
    Filed: October 17, 2011
    Publication date: April 18, 2013
    Applicant: Warsaw Orthopedic, Inc.
    Inventors: DANIEL PAXTON WALL, Richard Quinn Brown, Kevin T. Foley, Joseph D. Shine, Gregory C. Marik
  • Publication number: 20130096621
    Abstract: A polyaxial bone anchoring system includes a receiving part having an accommodation space, a first anchoring element having a first head, a sleeve-like insert piece configured to be arranged around a portion of the first head and to be arranged in the accommodation space, a second anchoring element having a second head, and a pressure member configured to exert pressure onto the first head or the second head, wherein when one of the first anchoring element or the second anchoring element is connected to the receiving part, the connected anchoring element is pivotable relative to the receiving part and can be locked at an angle relative to the receiving part by exerting pressure with the pressure member onto the respective head of the connected anchoring element, and wherein the first bone anchoring element and the second bone anchoring element are configured to be interchangeably connectable to the receiving part.
    Type: Application
    Filed: August 15, 2012
    Publication date: April 18, 2013
    Inventors: Lutz Biedermann, Martin Meer, Wilfried Matthis
  • Publication number: 20130096634
    Abstract: Screws for anchoring in cancellous or other low-quality bone are described. One type of screw addresses the problem of extravasation of bone cement when filling an area of low-quality bone. The screw includes an expandable container for retaining bone cement and anchoring the screw in low-quality bone. The screw also includes an anchoring device for holding the screw in place in the bone while it is supplied with bone cement or other appropriate filler. The screw further includes a head for connecting to a rod or other apparatus. A second type of screw uses an expandable container to deform two or more fins to compress cancellous bone and/or anchor in cancellous bone.
    Type: Application
    Filed: October 12, 2011
    Publication date: April 18, 2013
    Inventor: Sean Suh
  • Publication number: 20130096624
    Abstract: A spinal alignment system is disclosed that includes a rod and a plurality of uniplanar screw assemblies that include a screw, a cap, and a housing. The screw and cap are configured such that the relative angular displacement between the screw and the cap is limited to a first limit angle in a first plane and to a second limit angle in a second plane that is perpendicular to the first plane, the second limit angle being larger than the first limit angle. The housing is coupled to the cap and configured to maintain the cap in proximity with the head of the screw. The housing has two elongated elements forming a U-shaped saddle. The alignment system also includes a plurality of locking cap assemblies that capture the rod within the U-shaped saddle and are tightened to fixedly couple the rod to the respective uniplanar screw assemblies.
    Type: Application
    Filed: April 5, 2011
    Publication date: April 18, 2013
    Applicant: SeaSpine, Inc.
    Inventors: Michael Di Lauro, Nicholas M. Cordaro, Raymund Woo, Devin Mathios
  • Patent number: 8419778
    Abstract: The present teachings provide one or more surgical implements for repairing damaged tissue, such as in the case of a spinal fixation procedure. A uniplanar bone anchor system for a fixation procedure is provided. The system can include a bone fastener including a head with a bearing surface and a shaft adapted to engage an anatomy. The system can also include a saddle, which can include a first bore formed about a longitudinal axis that receives the bone fastener and a coupling bore defined transverse to the longitudinal axis. The system can also include a coupling system, which can have a second bearing surface. The coupling system can be received through the coupling bore such that the second bearing surface of the coupling system can contact the bearing surface to permit the bone fastener to move in only one plane.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: April 16, 2013
    Assignee: EBI, LLC
    Inventor: David Barry
  • Publication number: 20130090697
    Abstract: Embodiments are generally directed to an apparatus for reducing a rod into an orthopedic fixation device. An embodiment provides a rod-reducing apparatus. The rod-reducing apparatus may comprise a housing comprising a threaded through bore. The rod-reducing apparatus further may comprise a reduction shaft comprising a shaft portion and a through bore in the shaft portion, wherein the shaft portion may be configured to be received within the threaded through bore of the housing. The locking cap driver may comprise a locking cap driver comprising a shaft portion that may be configured to be received within the through bore of the reduction shaft, wherein a distal end of the shaft portion may be configured for attachment to a locking cap assembly.
    Type: Application
    Filed: October 11, 2011
    Publication date: April 11, 2013
    Inventor: Milan George
  • Patent number: 8414625
    Abstract: A retraction device comprises at least one retracting blade and a pedicle screw. The retracting blade has a distal end having at least one projection with a passage for engaging a retention pin. The pedicle screw has a threaded body and a movable head. The movable head has at least one recess with a channel that can be aligned with the passage of the projection.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: April 9, 2013
    Assignee: K2M, Inc.
    Inventor: Josef Gorek
  • Patent number: 8414627
    Abstract: A resorbable screw fastener and a method of firing with an applicator capable of applying a surgical fastener to tissue in order to form tissue connection to secure objects to tissue, the fastener including a body portion having a helical thread, a head portion disposed at the proximal end of the body portion. The resorbable screw fastener is 100% resorbed in vivo during a period of time ranging from about 14 days to about one year after implantation.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: April 9, 2013
    Assignee: Covidien LP
    Inventors: Ralph Robert Corradi, David N. Fowler, Christopher J. Criscuolo, Earl Zergiebel, Michael Bettuchi, Frank J. Viola
  • Patent number: 8409260
    Abstract: A bone screw having a screw member possessing a threaded section and a head and a receiving part at the head end for receiving a rod to be connected to the bone screw is provided. The receiving part has on open first bore and a substantially U-shaped cross-section having two free legs provided with a thread. Furthermore, the receiving part has a second bore on the end opposite to the first bore whose diameter is greater than that of the threaded section and smaller than that of the head. On the bottom of the first bore a seat for the head is provided. In order that the screw member can be pivoted to at least one side by an enlarged angle, the edge bounding the free end of the second bore viewed relative to the axis of the first bore is of asymmetric construction.
    Type: Grant
    Filed: January 22, 2004
    Date of Patent: April 2, 2013
    Assignee: Biedermann Technologies GmbH & Co. KG
    Inventors: Lutz Biedermann, Jurgen Harms
  • Publication number: 20130079830
    Abstract: Disclosed are spinal fusion assemblies for use in skeletal systems. The assembly includes a coupling element that can be coupled to a fixation element, such as, for example, a screw with a head that removably mates with the coupling element. The coupling element and fixation element are configured to be coupled to an elongate stabilizer, such as a rod, that is positioned between a top and a bottom saddle. A compression member, such as a compression nut, is configured to mate with the coupling element and provides a compressive force to the top and bottom saddles to secure the elongate stabilizer therebetween. The top and bottom saddles are movably positioned within the coupling element such that they can gradually reposition and self-align into a secure engagement with the stabilizer as the compression member provides the compressive force.
    Type: Application
    Filed: September 20, 2012
    Publication date: March 28, 2013
    Inventors: Laszlo Garamszegi, John Carlisle Brown, Souhail Toubia
  • Publication number: 20130079832
    Abstract: A fracture fixation device is described for fixing a bone having a near cortex and a far cortex, comprising a shaft portion configured to span a distance between the near cortex and the far cortex of the bone; a head portion adjoining the shaft portion and providing for engagement of the device with a bone plate, wherein the head portion is integral with the shaft portion; and a threaded front section for engagement of the device with the far cortex of the bone, wherein the device permits motion of the shaft portion relative to the near cortex.
    Type: Application
    Filed: November 26, 2012
    Publication date: March 28, 2013
    Applicant: Apex Biomedical Company LLC
    Inventor: Apex Biomedical Company LLC
  • Publication number: 20130079831
    Abstract: A crimping tool for producing a polyaxial bone anchoring device (1, 1?) is provided. The crimping tool includes at least one tip holder having a crimping tip and an inclined passage and an actuating member having at least an inclined leg, wherein the inclination of the inclined passage corresponds to the inclination of the inclined leg.
    Type: Application
    Filed: September 27, 2012
    Publication date: March 28, 2013
    Applicant: BIEDERMANN TECHNOLOGIES GMBH & CO. KG
    Inventor: Biedermann Technologies GmbH & Co. KG
  • Patent number: 8403971
    Abstract: A polyaxial screw assembly includes a pedicle screw, a coupling, an insert, and a housing. The pedicle screw includes a shank having a helical thread formed thereon and a head at one end. The coupling is positioned on top the pedicle screw and releasably engages portions of the head. The coupling and pedicle screw are positioned within a distal portion of the housing. The pedicle screw is slid through an opening in the insert and the insert is thread into the distal portion of the housing to retain the coupling and the pedicle screw within the housing. The pedicle screw is rotatable and pivotable relative to the housing. Compressing the coupling within the housing locks the pedicle screw in a desired orientation.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: March 26, 2013
    Assignee: K2M, Inc.
    Inventors: Michael Barrus, Scott Jones
  • Publication number: 20130072991
    Abstract: Implementations of the present disclosure provide a snap fit rod and fastener system including one or more fasteners for securing one or more rods to secure a spine or other anatomical structure. The fasteners include a fixation shaft, a clamp and a connector. The fixation shaft (for example a pedicle screw) is configured to frictionally engage a bone (vertebra) or other workpiece. The clamp has a pressure responsive portion that defines an opening configured to receive a rod. The connector is configured to connect the clamp to the fixation shaft and exert pressure on the clamp to modify the opening and secure the rod. A bias mechanism, such as a washer spring may be included to urge against the pressure responsive portion and which can be overcome by pressure on the rod for the “snap fit” effect. For additional adjustability, the clamp may be pivotally mounted on the fixation shaft.
    Type: Application
    Filed: September 19, 2011
    Publication date: March 21, 2013
    Applicant: SYNTHES USA, LLC
    Inventor: David Rathbun
  • Publication number: 20130072984
    Abstract: Systems, methods, and apparatuses for bone fixation are presented. In one aspect, presented herein is a screw for bone fixation, an insertion tool, and a method for stabilization across a bone joint of the spine. The bone screw has an elongate shank defining an internal longitudinal passage. The screw has an external threaded surface and a tapered distal end. The insertion tool engages the head of the screw and is used to drive the screw into the desired bone joint.
    Type: Application
    Filed: January 25, 2012
    Publication date: March 21, 2013
    Inventor: James C. Robinson
  • Publication number: 20130072992
    Abstract: A polyaxial bone screw assembly includes a threaded shank body having an integral upper portion receivable in an integral 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 compression insert, a down-loadable friction fit split retaining ring having inner and outer tangs and an up-loadable shank upper portion cooperate to provide for pop- or snap-on assembly of the shank with the receiver either prior to or after implantation of the shank into a vertebra. The shank and receiver once assembled cannot be disassembled.
    Type: Application
    Filed: September 7, 2012
    Publication date: March 21, 2013
    Inventors: Roger P. Jackson, James L. Surber
  • Patent number: 8398688
    Abstract: In order to improve a bone screw with a shaft defining a longitudinal axis and with a head which can be brought into engagement with a bone screw receiving means of a bone plate for the releasable connection of the bone screw to the bone plate, wherein a securing element for securing a connection between the bone screw and the bone plate is provided, wherein the bone screw can be brought from a position of engagement, in which the bone screw is held on the bone plate, into a release position, in which the bone screw can be released from the bone plate, wherein the securing element can be brought from a non-securing position, in which the bone screw can be brought into the release position, into a securing position for securing the connection between the bone screw and the bone plate, in which the bone screw takes up the position of engagement, such that a bone plate can be fixed to bone parts more easily and more securely it is suggested that the securing element be supported on the bone screw so as to be mov
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: March 19, 2013
    Assignee: Aesculap AG
    Inventors: Andrea Peukert, Jens Beger, Alexander Haas
  • Publication number: 20130066380
    Abstract: A two step locking screw assembly includes a receiving member for receiving a fixation member and an anchor having an enlarged portion and a shank. The enlarged portion of the anchor may be seated in the receiving member. An insert may also extend inside the receiving member. An outer fastener may be positioned in the receiving member. The outer fastener may include a central opening and a pair of ramped flanges. An inner fastener may be disposed inside the central opening of the outer fastener.
    Type: Application
    Filed: August 15, 2012
    Publication date: March 14, 2013
    Applicant: Aesculap Implant Systems, LLC
    Inventors: Tyler Haskins, Mohit Prajapati
  • Publication number: 20130066428
    Abstract: A fixation device for bones includes a member which has at least one bore for receiving a bone screw, wherein the at least one bore comprises a first internal thread portion. The bone screw has a first shaft section provided with a first external thread portion arranged to cooperate with the internal thread portion of the at least one bore, and a head section having a diameter larger than that of the shaft section to provide a catch arranged to engage with a stop formed in the bore. The bone screw further has a second shaft section which includes a clearance groove extending between the catch of the head section and the external thread of the first shaft section. The clearance groove allows disengagement of the two thread portions, such that the bone screw is prevented from being unscrewed off the bore when it is loosened within the adjacent bone.
    Type: Application
    Filed: September 13, 2012
    Publication date: March 14, 2013
    Inventors: Lutz Biedermann, Wilfried Matthis, Othmar Schwarzenbach, Martin Pabst
  • Patent number: 8394132
    Abstract: A cannulated compression screw is used as an orthopedic implant and has a threaded distal end with an insertion tip that includes at least one and preferably two, three or four flutes to allow the screw to be self-tapping. Optionally, the screw also includes one or more reverse cutting flutes proximal to the insertion tip. The distal threads are cancellous threads having a generally constant minor diameter and a generally constant major diameter and a generally constant thread pitch. An intermediate portion of the screw is non-threaded and the proximal end includes a compression wedge or taper that has at least one, and preferably two to five flutes that terminate before the top of the screw. The proximal end further includes a radiused bevel to the terminal surface that includes a hexagonal torque driving recess. The diameter of the non-threaded shaft section is constant distal from the compression wedge to the distal tip where it defines the minor diameter of the threaded portion.
    Type: Grant
    Filed: September 16, 2008
    Date of Patent: March 12, 2013
    Assignee: Orthohelix Surgical Designs, Inc.
    Inventors: Derek S. Lewis, Deepa Mani, David B. Kay, Amanda Martin
  • Patent number: 8394133
    Abstract: A dynamic fixation medical implant includes a longitudinal connecting member assembly having an elongate coil-like outer member and an inner cylindrical core attached to the outer member at only one end thereof. Some assemblies include a second longitudinal connecting member in the form of a rod that is fixed to the inner core and extends outwardly from the assembly. Certain assemblies include a threaded core or threaded inserts that cooperate with a helical slit of the coil-like outer member. Two or more cooperating bone screw assemblies attach to the connecting member assembly. The bone screw assemblies may include upper and lower compression members for affixing to and cradling the coil-like outer member only, allowing relative movement between the outer member and the inner cylindrical core. Press fit or snap-on features attach one end of the coil-like outer member to one end of the inner cylindrical core.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: March 12, 2013
    Inventor: Roger P. Jackson
  • Publication number: 20130060291
    Abstract: Spinal plates with additional features to improve the stability of the interface between the plate and the underlying bone. A bone plate may include one or more sharp ridges along the periphery of its underside. When attached to bone, the ridge digs into the bone and increases stability. A bone plate may alternatively or additionally include one or more holes for optional spikes, which may be inserted once the plate is attached to the bone. By separating the spikes and including them as an optional component, the plate may enhance stability while reducing or eliminating the chance of the spike injuring the patient. Furthermore, bone screws may incorporate alternating notches and ridges into the head of the screw. The notches and ridges may interface with a set screw, thereby preventing rotation and loosening of the screw.
    Type: Application
    Filed: September 6, 2011
    Publication date: March 7, 2013
    Inventor: Samuel Petersheim
  • Publication number: 20130060292
    Abstract: Polyaxial bone anchors include a retainer for holding a shank within a receiver, the retainer being in at least two discrete pieces and cooperating with a variety of inserts, some of which independently lock the polyaxial mechanism. Polyaxial and mono-axial bone anchor assemblies include pivot and/or pressure inserts or pads that cooperate with longitudinal connecting members to provide a desired degree of continued control of angulation of the longitudinal connecting member in the sagittal plane or to hold the connecting member in place. Pressure pads for deformable rods may also be made from a deformable plastic material.
    Type: Application
    Filed: October 22, 2012
    Publication date: March 7, 2013
    Inventor: Roger P. Jackson
  • Publication number: 20130060293
    Abstract: A polyaxial bone screw assembly includes a threaded shank body having an integral upper portion receivable in an integral 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 compression insert having a sub-structure, a down-loadable friction fit split retaining ring having inner and outer tangs and an up-loadable shank upper portion cooperate to provide for pop- or snap-on assembly of the shank with the receiver either prior to or after implantation of the shank into a vertebra. The shank and receiver once assembled cannot be disassembled.
    Type: Application
    Filed: October 26, 2012
    Publication date: March 7, 2013
    Inventors: Roger P. Jackson, James L. Surber