US20020032443A1 - Multi-angle bone screw assembly using shape-memory technology - Google Patents

Multi-angle bone screw assembly using shape-memory technology Download PDF

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US20020032443A1
US20020032443A1 US09944662 US94466201A US2002032443A1 US 20020032443 A1 US20020032443 A1 US 20020032443A1 US 09944662 US09944662 US 09944662 US 94466201 A US94466201 A US 94466201A US 2002032443 A1 US2002032443 A1 US 2002032443A1
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assembly according
spinal fixation
fixation assembly
receiver member
recess
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US6454773B1 (en )
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Michael Sherman
Troy Drewry
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Sherman Michael C.
Troy Drewry
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7001Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7035Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
    • A61B17/7037Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other wherein pivoting is blocked when the rod is clamped
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7001Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7032Screws or hooks with U-shaped head or back through which longitudinal rods pass
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7001Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7035Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
    • A61B17/7038Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other to a different extent in different directions, e.g. within one plane only
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00831Material properties
    • A61B2017/00867Material properties shape memory effect
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S411/00Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/909Fastener or fastener element composed of thermo-responsive memory material
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S606/00Surgery
    • Y10S606/907Composed of particular material or coated
    • Y10S606/911Memory material

Abstract

In one embodiment, a spinal fixation assembly includes an elongated member, such as a spinal rod, configured for placement adjacent the spine and a bone engaging fastener, such as a bone screw having a lower portion configured for engaging a vertebra and a head that is at least partially spherical. The assembly further includes a receiver member defining a bore therethrough from a top end to a bottom end, a recess for receiving the head of the bone screwing fastener therein, and a lower opening at said bottom end of the receiver member through which the bone screw extends. The recess is configured to at permit pivoting of the bone screw within the receiver member until the head is fixed within the recess. The receiver member also includes a channel communicating with the bore and having an upper opening at the top end of the receiver member for insertion of the spinal rod into the channel. In one embodiment, two compression members are provided, each being formed of a temperature responsive material and having a first configuration at a first temperature and a different second configuration at a different second temperature in which the compression member contracts about a portion of the receiver member to thereby compress the receiver member about both the head of the bone screw within the recess and the spinal rod within the channel.

Description

    BACKGROUND OF THE INVENTION
  • The present invention concerns a bone screw assembly, and particularly an assembly useful for engagement in the vertebrae of the spine. The invention contemplates an assembly that is capable of supporting a bone engaging fastener at multiple angular orientations with respect to an elongated member extending along the spine. [0001]
  • Several techniques and systems have been developed for correcting and stabilizing the spine and for facilitating fusion at various levels of the spine. In one type of system, a bendable rod is disposed longitudinally along the length of the spine or vertebral column. The rod is preferably bent to correspond to the normal curvature of the spine in the particular region being instrumented. For example, the rod can be bent to form a normal kyphotic curvature for the thoracic region of the spine, or a lordotic curvature for the lumbar region. In accordance with such a system, the rod is engaged to various vertebrae along the length of the spinal column by way of a number of fixation elements. A variety of fixation elements can be provided which are configured to engage specific portions of the vertebra. For instance, one such fixation element is a hook that is configured to engage the laminae of the vertebra. Another very prevalent fixation element is a spinal screw which can be threaded into various aspects of the vertebral bone. [0002]
  • In one typical procedure utilizing a bendable rod, the rod is situated on opposite sides of the spine or spinous processes. A plurality of bone screws are threaded into a portion of several vertebral bodies, very frequently into the pedicles of these vertebrae. The rods are affixed to these plurality of bone screws to apply corrective and stabilizing forces to the spine. [0003]
  • One example of a rod-type spinal fixation system is the TSRH® Spinal System sold by Danek Medical, Inc. The TSRH® System includes elongated rods and a variety of hooks, screws and bolts all configured to create a segmental construct throughout the spine. In one aspect of the TSRH® System, the spinal rod is connected to the various vertebral fixation elements by way of an eyebolt. In this configuration, the fixation elements are engaged to the spinal rod laterally adjacent to the rod. In another aspect of the TSRH® System, a variable angle screw is engaged to the spinal rod by way of an eyebolt. The variable angle screw allows pivoting of the bone screw in a single plane that is parallel to the plane of the spinal rod. Details of this variable angle screw can be found in U.S. Pat. No. 5,261,909 to Sutterlin et al., owned by the Assignee of the present invention. One goal achieved by the TSRH® System is that the surgeon can apply vertebral fixation elements, such as a spinal hook or a bone screw, to the spine in appropriate anatomic positions. The TSRH® System also allows the surgeon to easily engage a bent spinal rod to each of the fixation elements for final tightening. [0004]
  • Another rod-type fixation system is the Cotrel-Dubosset/CD Spinal System sold by Sofamor Danek Group, Inc. Like the TSRH® System, the CD® System provides a variety of fixation elements for engagement between an elongated rod and the spine. In one aspect of the CD® System, the fixation elements themselves include a body that defines a slot within which the spinal rod is received. The slot includes a threaded bore into which a threaded plug is engaged to clamp the rod within the body of the fixation element. The CD® System includes hooks and bone screws with this “open-back” configuration. Details of this technology can be found in U.S. Pat. No. 5,005,562 to Dr. Cotrel. One benefit of this feature of the CD® System is that the fixation element is positioned directly beneath the elongated rod. This helps reduce the overall bulkiness of the implant construct and minimizes the trauma to surrounding tissue. [0005]
  • On the other hand, these fixation elements of the CD® System are capable only of pivoting about the spinal rod to achieve variable angular positions relative to the rod. While this limited range of relative angular positioning is acceptable for many spinal pathologies, many other cases require more creative orientation of a bone screw, for instance, relative to a spinal rod. Certain aspects of this problem are addressed by the variable angle screw of the TSRH® System, as discussed in the '909 Patent. However, there is a need for a bone screw that is capable of angular orientation in multiple planes relative to the spinal rod. Preferably, the bone screw is capable of various three-dimensional orientations with respect to the spinal rod. Screws of this type have been referred to as poly-axial or multi-axial bone screws. [0006]
  • Others have approached the solution to this problem with various poly-axial screw designs. For example, in U.S. Pat. No. 5,466,237 to Byrd et al., a bone screw is described which includes a spherical projection on the top of the bone screw. An externally threaded receiver member supports the bone screw and a spinal rod on top of the spherical projection. An outer nut is tightened onto the receiver member to press the spinal rod against the spherical projection to accommodate various angular orientations of the bone screw relative to the rod. While this particular approach utilizes a minimum of components, the security of the fixation of the bone screw to the rod is lacking. In other words, the engagement or fixation between the small spherical projection on the bone screw and the spinal rod is readily disrupted when the instrnmentation is subjected to the high loads of the spine, particularly in the lumbar region. [0007]
  • The same inventors implemented a somewhat different approach in U.S. Pat. No. 5,474,555. In this patent, an anchor receives a smei-spherical head of a bone screw within a recess. The anchor includes a rod channel transverse to the screw recess. The anchor is externally threaded to receive an internally threaded nut. In one embodiment, the nut is threaded directly down onto the spinal rod to clamp the rod within the channel. In another embodiment, a cap is provided between the rod and nut. In both embodiments, neither the rod nor the external not impart any clamping force onto the head of the bone screw. [0008]
  • In another approach shown in U.S. Pat. No. 4,946,458 to Harms et al., a spherical headed bone screw is supported within separate halves of a receiver member. The bottom of the halves are held together by a retaining ring. The top of the receiver halves are compressed about the bone screw by nuts threaded onto a threaded spinal rod. In another approach taken by Harms et al., in U.S. Pat. No. 5,207,678, a receiver member is flexibly connected about a partially spherical head of a bone screw. Conical nuts on opposite sides of the receiver member are threaded onto a threaded rod passing through the receiver. As the conical nuts are threaded toward each other, the receiver member flexibly compresses around the head of the bone screw to clamp the bone screw in its variable angular position. One detriment of the systems in the two Harms et al patents is that the spinal rod must be threaded in order to accept the compression nuts. It is known that threaded rods can tend to weaken the rods in the face of severe spinal loads. Moreover, the design of the bone screws in the '458 and '678 Patents require a multiplicity of parts and are fairly complicated to achieve complete fixation of the bone screw. [0009]
  • Two patents to Errico et al., U.S Pat. Nos. 5,549,608 and 5,554,157, depict two alternative approaches to multi-angle bone screw apparatus. The '608 Patent describes a complicated array of components that includes a tapered lower portion defining a spherical recess to receive the head of a bone screw. The lower portion is slotted so that the lower portion can be compressed about the bone screw head by operation of a ring pushed down the tapered lower portion. A hollow cylindrical rod securing sleeve fits over an upper portion of the coupling element that is operable to clamp the rod within the coupling element as the sleeve is pushed down onto the ring. The coupling element includes a threaded post onto which a nut is threaded that is operable to push the sleeve down onto the rod and onto the ring to compress the lower portion against the bone screw head. Like the Harms devices described above, the approach in the '608 Patent involves a multiplicity of parts and excessive “fiddle factor” for use in a spinal surgery. [0010]
  • The second alternative in the Errico '157 Patent is similar to the approach taken in the Puno '555 Patent, except that the rod contacts the spherical head of the bone screw in the '157 Patent. An external nut is threaded directly down onto the spinal rod which then bears directly on the bone screw head to clamp the head within a spherical recess. While this design offers much greater simplicity than the Errico '608 Patent it suffers from the point contact between the rod and the spherical head of the bone screw. It is uncertain whether this clamping mechanism is sufficient to maintain the relative position between bone screw and spinal rod under severe spinal loads. [0011]
  • In recent years, a special material known as “shape-memory alloy” has found its way into the field of medical devices. These materials are alloys of known metals, such as copper and zinc, nickel and titanium, silver and cadmium, and others, that are known to exhibit a “shape-memory” in which a particular component formed of a shape-memory alloy (SMA) will change shape upon changes in temperature. [0012]
  • The shape-memory characteristics of SMAs occur when the alloy changes from a martensitic crystal phase to an austenitic crystal phase. In the martensitic stage, the SMA is relatively weak and pliable. As the temperature of the SMA component is increased above a transformation temperature range, the SMA transforms to its austenitic phase in which the material is relatively strong with super-elastic properties. Generally, the strength and super-elastic characteristics of an SMA tend to increase toward the high temperature end of the transformation temperature range and decrease toward the low temperature end. [0013]
  • In use, an object made of an SMA is formed into a particular shape at a temperature that is either above or below the transformation temperature range. The object will then change shape as its temperature increases or decreases through that transformation temperature range. In the field of medical devices, a device is formed into its in situ shape at the high temperature, or the temperature above the transformation temperature range. The device is then cooled to be provided to the surgeon for implantation. One known application of SMA technology in the medical field is a vena cava filter that assumes a smaller shape at its low temperature, and then expands to its larger shape within a blood vessel when heated to body temperature. [0014]
  • While there are many alloys that exhibit shape memory characteristics, one of the more common SMAs in the medical field is an alloy of nickel and titanium. One such well known alloy is Nitinol®, which has proven highly effective for devices placed within the human body because its transformation temperature range falls between room temperature and normal human body temperature. Shape-memory technology has also found its way into the field of orthodontics, as described in U.S. Pat. No. 5,551,871 to Besselink et al. This patent describes face bow head gear used for aligning teeth of a patient in which an SMA wire is used to align and hold the teeth of a patient. The '871 Patent also discloses devices for use in treating scoliosis including a transverse connector and bone engaging fasteners that clamp to an elongated rod by way of shape-memory characteristics. While the '871 Patent shows one use of SMA technology for spinal hooks and screws, the hooks and screws are only capable of pivoting about the axis of the rod. In this regard, the devices shown in the '871 Patent are similar to the components of the CD® System discussed above. [0015]
  • There is a need remaining in the industry for a multi-axial or poly-axial bone screw that can be readily and securely engaged to an elongated spinal rod. Preferably, the spinal rod can be of any configuration—i.e., smooth, roughened, knurled or even threaded. [0016]
  • This need also encompasses the goal of minimizing the profile and bulk of any of the components used to engage the bone screw to the spinal rod in a variety of angular orientations. Moreover, it is desirable to reduce the number of components of the system that must be manipulated by the surgeon during a surgical procedure. [0017]
  • DESCRIPTION OF THE FIGURES
  • FIG. 1 is a side elevational view of a multi-axial screw assembly according to one embodiment of the present invention. [0018]
  • FIG. 2 is a side cross-sectional view of the screw assembly depicted in FIG. 1. [0019]
  • FIG. 3 is a side elevational view of the screw assembly shown in FIG. 1, with a spinal rod engaged within the assembly. [0020]
  • FIG. 4 is a side elevational view of the assembly as shown in FIG. 3, with the assembly rotated 90° go to show the rod extending through the multi-axial screw assembly. [0021]
  • FIG. 5 is a side elevational view of a bone screw adapted for use with the multi-axial screw assembly shown in FIG. 1. [0022]
  • FIG. 6 is a top perspective view of a receiver member used with the multi-axial screw assembly shown in FIG. 1. [0023]
  • FIG. 7 is a side elevational view of the receiver member shown in FIG. 6. [0024]
  • FIG. 8 is an end elevational view of the receiver member shown in FIG. 6. [0025]
  • FIG. 9 is a top elevational view of a locking ring used with the multi-axial screw assembly shown in FIG. 1. [0026]
  • FIG. 10 is a top perspective view of the receiver member depicted in FIG. 10. [0027]
  • FIG. 11 is a cross sectional view of a receiver member according to an additional embodiment of the present invention. [0028]
  • FIG. 12 is a side elevational view of the receiver member shown in FIG. 11, with a spinal rod and SMA ring depicted in phantom lines engaged to the receiver member. [0029]
  • FIG. 13 is an end elevational view of the receiver member shown in FIG. 10. [0030]
  • SUMMARY OF THE INVENTION
  • The deficiencies of prior bone screws are addressed by several aspects of the present invention. In one embodiment of the invention, a spinal fixation assembly is provided which includes a bone engaging fastener, such as a bone screw, and an elongated member, such as a spinal rod. The fixation assembly includes a multi-axial screw assembly that permits fixation of the bone screw to the spinal rod at any of a plurality of angles in three-dimensional space relative to the rod. In other words, the bone screw can pivot relative to the rod about a cone directly beneath the spinal rod. In one aspect of the invention, the bone screw includes a head that is at least partially spherical. The head is preferably truncated to form a flat upper surface within which a tool engaging recess is defined. [0031]
  • The multi-axial screw assembly further includes a receiver member defining a bore therethrough from its top end to its bottom end. The bore further includes a recess for receiving the head of the bone screw, with a lower opening at the bottom end of the receiver member through which a lower portion of the bone screw extends to engage the spine. The receiver member also includes a channel transverse to the bore and communicating with the bore to receive the spinal rod. Both the bone screw and the spinal rod can be inserted into the receiver member through an upper opening. [0032]
  • In a further aspect of the invention, a locking ring is provided at the bottom of the receiver member. The locking ring is configured to closely fit around the perimeter of the receiver member and particularly overlapping the recess within which the head of the bone screw resides. In accordance with the invention, the locking ring is formed of a shape-memory alloy (SMA) configured so that the locking ring has a first diameter that is larger than a second diameter, and in which the locking ring transforms from the first diameter to the second diameter when heated to the body temperature of the patient. In other words, the locking ring contracts with increasing temperature so that the ring presses the receiver member against the head of the bone screw, thereby clamping the bone screw within the multi-axial screw assembly. [0033]
  • In a further feature of the invention, the receiver member includes thin slots on opposite sides of the receiver to facilitate compression of the receiver member about the head of the bone screw. In another aspect, opposite slots are provided in the receiver member that are offset by 90° from the other slots. These slots extend into the channel within which the spinal rod is received. A second SMA locking ring is disposed over the top of the receiver member to apply a clamping force from the top of the receiver member. In this manner, the spinal rod can be engaged by the receiver member as the upper SMA locking ring transforms to its austenitic shape. [0034]
  • In another embodiment, the receiver member is modified to permit entry of the bone screw head from the bottom of the receiver member. In this embodiment, the receiver member is provided with a plurality of slots emanating from the bottom of the member. The recess within the member is enlarged adjacent the bottom of the receiver member to accept the bone screw head by expansion of the receiver member at the slots. The slots terminate adjacent the rod channel so that transformation of the lower SMA ring will provide some clamping force to the spinal rod. In addition, the upper portion of the receiver member will provide further clamping force upon temperature transformation of the upper SMA ring. [0035]
  • The present invention provides an assembly that permits fixation of a bone engaging fastener to an elongated member at a plurality of three-dimensional angular orientations relative to the elongated member. The preferred embodiments of the inventive multi-axial screw assembly provides the advantage of a solid fixation between a spinal rod and a bone screw, regardless of the angle between the two components. [0036]
  • A further benefit of the present invention resides in the minimum number of components necessary to effect this solid fixation. Yet another benefit is achieved by the use of shape-memory technology to eliminate the need for extra mechanical fasteners and engagement instruments that are prevalent with prior devices. [0037]
  • It is one object of the invention to provide an assembly that allows for solid fixation of a fastener at a wide range of three-dimensional angles relative to an elongated component. Another object is to provide such an assembly that has minimum prominence and minimum bulk, and that readily supports the bone engaging fastener directly beneath the elongated member. Other objects and benefits of the inventions will become apparently upon consideration of the following written description and accompanying figures illustrating one embodiment of the invention. [0038]
  • DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • For the purposes of promoting an understanding of the principles of the invention, reference will now be made to the embodiments illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended, such alterations and further modifications in the illustrated device, and such further applications of the principles of the invention as illustrated therein being contemplated as would normally occur to one skilled in the art to which the invention relates. [0039]
  • In one aspect of the invention, a spinal fixation assembly includes an elongated member, such as the spinal rod, and a multi-axial screw assembly, such as the assembly [0040] 10 shown in FIGS. 1 and 2. The spinal fixation assembly can use a multi-axial screw assembly 10 at one or more locations along the length of the spine. The spinal fixation assembly can be used in a variety of applications within the spine to address a wide range of spinal pathologies. For example, a fixation assembly can be limited to the lumbar region for fixation following a diskectomy. Alternatively, a spinal fixation assembly can extend substantially along the entire length of the spine, such as along the thoracic and lumbar regions, to correct a deformity, such as scoliosis.
  • In other applications, a spinal fixation assembly implementing the present invention can provide for fixation and stabilization of the cervical spine, such as might occur following a fracture or dislocation. It is of course understood by a person of skill in this art that the components of the spinal fixation system will vary depending upon the region of the spine, and the treatment to be administered. In certain applications, a number of hooks will engage aspects of several vertebrae. In another fixation assembly, bone screws can be threaded into portions of the vertebrae, as all operating as an anchor for an elongated member, such as a spinal rod. [0041]
  • In accordance with the present invention, engagement between the elongated member and one or more vertebrae may require orientation of a fixation member at a wide range of three dimensional angles relative to the elongated member. In some circumstances, it is difficult to situate the elongated member, such as a spinal rod, in an optimum location relative to the vertebrae. In this instance, engagement of a fixation member to the spine may require that the fixation member assume various angles relative to the spinal rod, and certainly angles that may not be achieved by prior devices and systems. [0042]
  • Referring now to FIGS. 1 and 2, a multi-axial screw assembly [0043] 10 according to one embodiment of the invention is illustrated. The assembly 10 includes a bone screw 11 that is mounted within a receiver member 12. In the preferred embodiment, a pair of shape-memory alloy (SMA) locking rings are provided to clamp the receiver member 12 about at least the bone screw 11. A use of the screw assembly 10 as part of a spinal fixation system is depicted in FIGS. 3 and 4. In this particular spinal fixation system or assembly, the elongated member is a spinal rod R that extends through the receiver member 12. As shown specifically in FIG. 3, the bone screw 11 is capable of assuming a range of angles up to an angle A relative to the spinal rod. It is understood that the bone screw can sweep through a cone defined at the angle A, although the angle is only depicted in the plane of the paper in the figure.
  • Details of the bone screw [0044] 11 are shown in FIG. 5. In particular, the bone screw 11 includes a threaded shank 15 that carries threads configured to engage the bone of a vertebra. In one specific embodiment, the threads can be cancellous threads that are configured to engage the vertebral body. The bone screw 11 also includes a head 16 that is preferably at least partially spherically shaped. In one specific embodiment, the head 16 includes a flat surface 16 a within which is defined a tool receiving recess 17. The tool receiving recess 17 can be configured to accept any type of known driving tool. In the specific embodiment, the tool receiving recess 17 is a hex recess to receive the hex end of a driving tool. The tool receiving recess 17 allows for insertion of the bone screw 11 into the vertebra.
  • The head [0045] 16 of bone screw 11 is preferably substantially spherically shaped to include a spherical surface 18. The spherical surface 18 provides for bearing contact with the receiver member 12 so that the bone screw can be arranged at a variety of angular orientations relative to the receiver member, with and without the spinal rod R extending therethrough. In a further aspect of the bone screw 11, an annular relief 19 is provided between the spherical head 16 and the threaded shank 15. Referring back to FIGS. 1 and 2, it can be seen that that annular relief 19 allows the bone screw 11 to have a wider range of movement within the receiver member 12 and helps avoid contact between the shank of the bone screw and the bottom of the receiver member.
  • Details of the receiver member [0046] 12 can be discerned from FIGS. 6-8. In one specific embodiment, the receiver member 12 defines a spherical recess 26 adjacent the bottom end of the member. The recess is preferably at least partially spherical, as shown more clearly in FIG. 2. In the specific embodiment, the spherical recess 26 has a diameter that is substantially equal to the diameter of the spherical surface 18 of the head of the bone screw 11. In addition, in the specific embodiment, the spherical recess 26 contacts only a portion of the spherical surface 18 of the bone screw 11. In the illustrated embodiment, this contact amounts to about one-third of the spherical surface 18.
  • Returning to FIGS. [0047] 6-8, it can be seen that the receiver member 12 includes a flared opening 27 at the bottom of the member. Again looking back to FIG. 2, this flared opening 27 can be seen as providing for an enhanced range of movement of the bone screw 11 as the spherical head 16 pivots within the spherical recess 26. In accordance with the preferred embodiment, the flared opening 27 communicates with the spherical recess 26 at a diameter that is less than the largest diameter of the spherical head 16 of the bone screw 11. In this manner, the bone screw 11 will not pass through the bottom of receiver member 12.
  • In one embodiment, the receiver member further defines a central bore [0048] 25 extending from the top of the member to the recess 26. In this specific embodiment, the central bore 25 has a diameter that is approximately equal to the diameter of the spherical recess 26, or more particularly the diameter of the head 16 of the bone screw 11. The bone screw can be inserted into the receiver member 12 through an upper opening 28. The screw 11 passes through the bore 25 so that the head 16 of the bone screw can be pressed into the spherical recess 26 at the base of bore 25. As also shown in FIG. 2, the bore 25 can also allow access for a driving tool to engage the tool receiving recess 17 of the bone screw 11. In this manner, the bone screw can be threaded into a vertebra with the screw provisionally retained within the receiver member 12.
  • Looking again at FIGS. [0049] 6-8, it can be seen that the receiver member 12 has the general configuration of a cylinder having truncated side walls. In the preferred embodiment, the receiver member 12 includes opposite curved side walls 30 separated by opposing flat side walls 32. The flat side walls 32 define a rod channel 33 that extends transversely across bore 25 in the receiver member 12. An angled guide wall 35 can be formed on top of each of the curved side walls 30 to guide a spinal rod R (FIG. 3) through the upper opening 28 and into the rod channel 33. In accordance with a specific embodiment, the rod channel 33 is substantially circular and has a diameter that is substantially equal to the outer diameter of the spinal rod R to be disposed within the channel. The flat side walls 32 also define a linear channel 35 communicating between the rod channel 33 and the upper opening 28. Preferably, the linear channel 35 defines a width that is slightly smaller than the diameter of the rod channel 33 and than the largest diameter of the spinal rod R to be disposed within the rod channel 33. In this manner, the spinal rod can be at least provisionally held within the rod channel 33 prior to tightening of the locking rings 13 about the receiver member 12. In a specific embodiment, the width of the linear channel 35 is less than the diameter of the bore 25.
  • The preferred embodiment contemplates a receiver member [0050] 12 that is split at a pair of opposite upper slots 36 and a pair of opposite lower slots 37. In one embodiment, the upper slots 36 are defined from the base of the rod channel 33. The upper slots 36 permit slight contraction of the upper portion of the receiver member 12 about a spinal rod R disposed within the rod channel 33. Moreover, the upper slots 36 also permit slight expansion of the receiver member and particular the bore 25 during insertion of the bone screw 11 and linear channel 35 during insertion of the rod R from the upper opening 28.
  • In the present embodiment, the lower slots [0051] 37 are disposed at the bottom of the receiver member 12 and intersect the flared opening 27 and the spherical recess 26, in accordance with the preferred embodiment. The lower slots 37 allow contraction of the lower portion of the receiver member 12 about the head 16 of the bone screw 11. As shown in FIGS. 6-8, the upper slots 36 are offset by 90° relative to the lower slots 37. More particularly, the upper slots 36 are defined in the flat side walls 32, while the lower slots 37 are defined in the curved side walls 30.
  • In the preferred embodiment, the receiver member [0052] 12 defines features for supporting the pair of SMA locking rings 13. In one specific embodiment, an upper engagement groove 39 is defined within the curved side walls 30 at the top of the receiver member 12. A lower engagement groove 40 is also defined in the curved side walls 30 at the bottom of the receiver member 12. Preferably, the upper and lower grooves 39, 40 are configured to closely receive a corresponding locking ring 13 thereabout. An upper lip 41 is provided at the upper end of the engagement groove 39 to retain a locking ring 13 at the top of receiver member 12. Likewise, a lower lip 42 helps retain a locking ring 13 at the bottom of the receiver member 12.
  • In the specific embodiment of the invention, the lower engagement groove [0053] 40 is situated within the same plane as the spherical recess 26. In this manner, when the locking ring 13 at the bottom of the receiver member 12 contracts, the greatest amount of force will be applied directly from the receiver member 12 through the recess 26 to the spherical head 16 of the bone screw 11. Again in the specific embodiment, the upper engagement groove 39 is situated as close to the top of the receiver member 12 as possible so that upon contraction of the upper locking ring 13, the receiver member 12 wraps slightly around the spinal rod R to clamp the rod within the rod channel 33.
  • In one feature of the present invention, each of the locking rings [0054] 13 has a substantially similar configuration. As shown in FIG. 9, the locking rings 13 are substantially rectangular with curved end walls to substantially conform to the truncated cylindrical configuration of the receiver member 12. In other words, each of the locking rings 13 includes opposite curved walls 45 separated by opposite flat walls 46. Preferably, the locking rings 13 define an opening 47 between the walls 45, 46 that conforms to the upper engagement groove 39 and lower engagement groove 40. Also preferably, the ring 13 has an effective diameter between the curved walls 45 that is substantially equal to the diameter of the engagement grooves 39, 40 when the SMA locking ring 13 is in its martensitic or room temperature state.
  • When the locking ring [0055] 13, and particularly the screw assembly 10, is placed within the patient, the body temperature of the patient will increase the temperature of the locking rings 13. As the temperature increases past the transformation temperature range, the locking rings 13 move from their martensitic to their austenitic phases. In the austenitic phase at the higher temperature, the locking rings 13 deform to a smaller size, as reflected by the curved walls 45′ and flat walls 46′. The locking 13 in the upper groove 39 can be formed so that only the flat walls 46 shorten, while locking ring for the lower groove 40 can be formed so that only the curved walls 45 shorten. In this manner, the curved walls 45 of the upper locking ring can press the curved side walls 30 of the receiver member 12 toward each other and about the spinal rod R as the flat walls shorten. Likewise, the shortening of the curved walls 46 of the lower locking ring can cause the side walls 46 of the ring to press the side walls 32 of the receiver member 12 together about the screw head.
  • In accordance with the present invention, the multi-axial screw assembly [0056] 10 is initially provided with the spherical head 16 of the bone screw 11 disposed within the spherical recess 26 of the receiver member 12. In addition, a locking ring 13 is situated within the lower engagement groove 40 to loosely retain the bone screw within the receiver member. This initially assembled arrangement can be introduced to the surgical site and the bone screw 11 threaded into the vertebra according to the protocol for the particular spinal procedure. As indicated above, a driving tool can pass through the bore 25 of the receiver member 12, with the bore being substantially aligned with the tool receiving recess 17 in the head of the bone screw. Preferably, the bone screw 11 is driven into the vertebra to a recommended depth for adequate fixation, but preferably not so deep that the bottom of the receiver member 12 will contact or press against the vertebral bone. In order for the multi-axial capability of the assembly 10 to be realized, the receiver member 12 must be free to pivot in three dimensions about the head 16 of the bone screw 11.
  • Once the bone screw has been adequately fixed within the vertebra, the spinal rod R can be introduced into the rod channel [0057] 33, as shown in FIG. 3. It should be noted that the receiver member 12 is configured so that the spinal rod R does not contact the bone screw 11, regardless of the relative angle between the rod, receiver member 12 and bone screw head 16. Instead, the rod R is supported in the rod channel 33 by the flat side walls 32. With the rod properly positioned, the second locking ring 13 can be disposed on the receiver member 12, and particularly in the upper engagement groove 39.
  • It is understood that the locking rings [0058] 13 are at least initially at or below room temperature. Once the first locking ring 13 is situated within the patient upon insertion of the bone screw 11, the temperature of the locking ring 13 and the lower engagement groove 40 will increase. Once that temperature increases beyond the transformation temperature range of the SMA, the locking ring 13 will contract to the shape shown in FIG. 9 as indicated by curved walls 45′ and flat walls 46′. At this point, the spherical head 16 of the bone screw 11 will be firmly clamped within the spherical recess 26 of the receiver member 12.
  • Substantially concurrently, the locking ring [0059] 13 in the upper engagement groove 39 will also contract as its temperature increases above the transformation temperature range. At that point, then, the receiver member 12 will be contracted about the spinal rod R to firmly clamp the spinal rod within the rod channel 33. Once both SMA locking rings 13 have moved to their austenitic phase, the multi-axial screw assembly 10 is firmly clamped and the bone screw 11 is solidly fixed to the spinal rod R. It can be seen that the present invention provides a screw assembly 10 that offers a low profile and minimum prominence. In particular, the bone screw is attached to the spinal rod directly beneath the rod, or in line between the rod and the vertebra. The overall bulk or prominence of the present invention is minimized by the use of the SMA locking rings 13, which is in contrast to the prior devices which require some form of external cap or nut threaded onto the top of a receiver member.
  • The present invention provides a screw assembly that can be tightened from the top, meaning that the bone screw [0060] 11 can be threaded onto the vertebra from the top. In addition, the spinal rod is loaded from the top, which can greatly simplify a spinal surgical procedure. In accordance with one feature of the invention, the rod does not need to be preloaded into the receiver member 12. Moreover, the multi-axial capability allows a bone screw to be connected with a spinal rod with minimal contouring of the rod being necessary.
  • In one specific embodiment of the invention, the bone screw [0061] 11 is configured for engagement in the lumbar spine and has an overall length of about 2.126 inches. The spherical head 16 and particularly the spherical surface 18 of the bone screw has an outer diameter of about 0.315 inches, while the annular relief 19 has a diameter of about 0.236 inches.
  • Further in accordance with a specific embodiment, the receiver member [0062] 12 has an overall height of about 0.609 inches. The receiver member defines a bore 25 having a diameter of about 0.295 inches, which is slightly smaller than the outer diameter of the spherical head 16 of the bone screw 11. On the other band, the spherical recess 26 has a diameter of approximately 0.315 inches to correspond to the outer diameter of the head of the bone screw 11. The flared opening 27 of the receiver member 12 increases to an opening diameter of 0.400 inches, in the specific embodiment. Also in the specific embodiment, the receiver member 12 has a width between the flat side walls 32 of 0.354 inches. This corresponds to the room temperature distance between the flat walls 46 of the locking rings 13. Similarly, the receiver member 12 has a maximum dimension between the curved side walls 30 of 0.462 inches at the upper and lower engagement grooves 39, 40. This dimension is substantially the same as the maximum distance between the curved walls 45 of the locking rings 13 in their room temperature configuration.
  • In the preferred embodiment, the upper slots [0063] 36 and lower slots 37 have a width of about 0.020 inches, which means that the receiver member 12 can contract over that distance at the respective slots. Thus, in order for the receiver member 12 to contract at the slots 36, 37 extent, the flat walls 46 of the locking rings 13 must shrink by about 0.020 inches. This change in length amounts to about a 4% reduction in the overall length of each of the flat walls 46. This percentage reduction is typical for many medical grade-SMAs; however, other SMAs could be used having different transformation capabilities. In the specific embodiment, the locking rings 13 are formed of Nitinol®.
  • In an alternative embodiment of the invention, a modified receiver member [0064] 52 is provided as shown in FIGS. 10-13. In this embodiment, the receiver member 52 includes a bore 55 extending through a small portion of the center of the receiver member. The bore opens into a spherical recess 56 that is configured so that the recess has a maximum diameter that is larger than the maximum diameter of the bore 55. In one specific embodiment, the recess has a diameter of about 0.320 in. to accomodate a similarly sized bone screw head, while the bore 55 has a diameter of about 0.250 in.
  • The recess [0065] 56 is only partially spherical, meaning that it does not extend entirely around the spherical head of a bone screw disposed within the recess. The recess 56 opens to the bottom of the receiver member at a flared opening 57. In the present embodiment, the recess contacts about half of the surface area of the bone screw, with the greater amount of contact at the upper hemisphere of the recess. In one specific embodiment, the recess 56 intersects the bore 55 at the bore's diameter of 0.250 in. At the lower end of the recess, the recess 56 intersects the flared opening 57 at a diameter that is greater than the diameter of the bore, namely about 0.305 in.
  • An upper opening [0066] 58 is provided at the top end of the receiver member, in one specific embodiment, preferably to permit insertion of the spinal rod. In this alternative embodiment, the bone screw, which can be the bone screw 11 described above, is loaded into the receiver member 52 from the bottom of the member. Thus, the upper opening 58 need not be provided for insertion of the bone screw, as in the embodiment of FIGS. 1-9. Likewise, the bore 55 may be eliminated unless it is needed for access by a screw insertion tool.
  • In accordance with this alternative embodiment, the receiver member [0067] 52 includes curved side walls 60 and flat side walls 62 similar to the receiver member 12. Likewise, the member 52 includes a rod channel 63 defined in the side walls that intersects a portion of the bore 55. The rod channel 63 opens to a linear channel 65 that incorporates angled guide walls 64 at the top end of the receiver member. In this embodiment, the linear channel 65 has a width that is substantially equal to the diameter of the bore 55 and rod channel 63.
  • As in the previous embodiment, the receiver member [0068] 52 is adapted to receive SMA locking rings at the top and bottom of the member. Thus, the receiver member 52 includes upper and lower engagement grooves 69, 70 defined by upper and lower lips 71, 72. An SMA locking ring 13 fits into each of the grooves 69, 70 and operates in the thermally responsive manner described above to contract about the receiver member.
  • In a further modification from the prior embodiment, the receiver member [0069] 52 includes short slots 66 defined in the flat side walls 62, and long slots extending from the bottom of the receiver in the curved side walls 60. In accordance with the present embodiment, the one short slot is provided in each flat side wall 62 that emanates from the bottom of the receiver member and that terminates generally in the middle of the spherical recess 56. On the other hand, the three long slots are provided in the curved side walls 60. The long slots extend from the bottom of the receiver member and terminate adjacent the level of the bottom of the rod channel 63.
  • The receiver member [0070] 52 of the embodiment in FIGS. 10-13 permits bottom loading of the bone screw by brief expansion of the spherical recess 56 and flared opening 57 at the slots 66 and 67. The lower SMA locking ring 13 can be added once the bone screw head is situated within the recess 56 by slightly compressing the receiver member at the slots 66, 67. Contraction of the lower SMA locking ring 13 due to temperature change again operates to compress the receiver member at the lower engagement groove 70 by closing the slots. In one specific embodiment, only the short slots 66 in the flat side walls 62 will close to clamp the bone screw head within the spherical recess 56. In another embodiment, the long slots 67 will also collapse upon a size reduction of the SMA locking ring.
  • Fixation of a spinal rod within the receiver member of this embodiment can be accomplished in many ways. First, referring to FIG. 12, it can be seen that an SMA locking ring [0071] 13′ disposed in the upper engagement groove 69 will directly abut the rod R′ disposed within the rod channel 63. In this respect, the upper groove 69 and locking ring 13′ is situated closer to the rod channel 63, and consequently the spinal rod R′, than with the previous embodiment. Fixation of the rod R′ within the rod channel 63 can also be effected by compression of the upper portion of the receiver member, and particularly the upper portion of the curved side walls 60, by SMA contraction of the upper locking ring 13′. Finally, additional compression of the receiver member 52 can be accomplished by contraction of the SMA locking ring in the lower engagement groove which contract the slots 66 and 67.
  • While the invention has been illustrated and described in detail in the drawings and foregoing description, the same is to be considered as illustrative and not restrictive in character, it being understood that only the preferred embodiments have been shown and described and that all changes and modifications that come within the spirit of the invention are desired to be protected. [0072]
  • For example, while the preferred embodiment contemplates a bone screw, such as screw [0073] 11, other bone engaging fasteners are contemplated. The multi-axial capabilities can be equally applicable to a vertebral hook, for example. Further, the components of the multi-axial screw assembly 10 can be sized according to the portion of the spine within which the assembly is to be used. In the illustrated embodiment, the components are dimensioned for use in the lumbar spine. It is understood that smaller components would be required in the thoracic and cervical spine, while the multi-axial movement capabilities can be equally well suited throughout the entire length of the spine. Further, while the invention is described for engagement to an elongated cylindrical rod, other elongated members are contemplated.

Claims (85)

    What is claimed:
  1. 1. A spinal fixation assembly, comprising:
    an elongated member configured for placement adjacent the spine;
    a bone engaging fastener, said fastener having a lower portion configured for engaging a vertebra and a head, said head being at least partially spherical in configuration;
    a receiver member having a top end and an opposite bottom end, said member defining a recess for receiving said head of said bone engaging fastener therein, said recess having a lower opening at said bottom end of said receiver member through which said lower portion of said fastener extends, said member also including a channel having an upper opening at said top end of said receiver member, said channel being configured to receive said elongated member therein; and
    a compression member disposed around a portion of said receiver member, said compression member being formed of a temperature responsive material and having a first configuration at a first temperature and a different second configuration at a different second temperature in which said compression member contracts about said portion of said receiver member to thereby compress said receiver member about said head of said bone engaging fastener within said recess.
  2. 2. The spinal fixation assembly according to claim 1, wherein said head of said bone engaging fastener includes a truncated upper surface, and defines a tool receiving recess through said upper surface.
  3. 3. The spinal fixation assembly according to claim 1, wherein:
    said recess is disposed within said receiver member adjacent said bottom end thereof; and
    said receiver member defines a outer annular lower groove adjacent said bottom end, said groove configured to receive said compression member when said compression member is in said first configuration.
  4. 4. The spinal fixation assembly according to claim 3, wherein:
    said receiver member includes an outer annular upper groove adjacent said top end thereof; and
    said assembly includes a second compression member configured to be received within said upper groove.
  5. 5. The spinal fixation assembly according to claim 4, wherein said second compression member is formed of a temperature responsive material having a first configuration to be received within said upper groove at substantially said first temperature and a different second configuration at substantially said different second temperature in which said second compression member contracts about said receiver member.
  6. 6. The spinal fixation assembly according to claim 1, wherein:
    said recess is disposed within said receiver member adjacent said bottom end thereof; and
    said receiver member defines an outer annular upper groove adjacent said top end, said groove configured to receive said compression member when said compression member is in said first configuration.
  7. 7. The spinal fixation assembly according to claim 1, wherein:
    said recess is disposed adjacent said bottom end of said receiver member; and
    said channel is disposed adjacent said top end of said receiver member and is disposed apart from said recess so that said head of said bone engaging fastener does not intersect said channel when said head is disposed within said recess.
  8. 8. The spinal fixation assembly according to claim 7, wherein:
    said assembly further including a second compression member formed of a temperature responsive material having a first configuration at substantially said first temperature and a different second configuration at substantially said different second temperature in which said second compression member contracts about said receiver member; and
    said receiver member defines an outer annular upper groove adjacent said top end thereof, said upper groove configured to receive said second compression member therein when said second compression member is in said first configuration, whereby said second compression member contracts about said receiver member in said different second configuration to compress said receiver member about said elongated member disposed within said channel.
  9. 9. The spinal fixation assembly according to claim 1, wherein said receiver member includes opposite first side side walls defining said channel and opposite second side walls intermediate said first side walls.
  10. 10. The spinal fixation assembly according to claim 9, wherein said receiver member includes a first slot defined in each of said opposite second side walls, each said first slot extending from said bottom end toward said top end of said receiver member.
  11. 11. The spinal fixation assembly according to claim 10, wherein each said first slot intersects said recess.
  12. 12. The spinal fixation assembly according to claim 11, wherein said first slot terminates at said recess.
  13. 13. The spinal fixation assembly according to claim 10, wherein said receiver member includes a second slot defined in each of said opposite first side walls, each said second slot extending from said channel toward said bottom end of said receiver member.
  14. 14. The spinal fixation assembly according to claim 12, wherein each said second slot intersects said recess.
  15. 15. The spinal fixation assembly according to claim 14, wherein said second slot terminates at said recess.
  16. 16. The spinal fixation assembly according to claim 12, wherein each said first slot intersects said recess.
  17. 17. The spinal fixation assembly according to claim 16, wherein said first slot terminates at said recess.
  18. 18. The spinal fixation assembly according to claim 10, wherein said receiver member includes a second slot defined in each of said opposite first side walls, each said second slot extending from said bottom end toward said top end of said receiver member.
  19. 19. The spinal fixation assembly according to claim 18, wherein each said second slot intersects said recess.
  20. 20. The spinal fixation assembly according to claim 19, wherein said second slot terminates between said recess and said top end of said receiver member.
  21. 21. The spinal fixation assembly according to claim 20, wherein said second slot terminates adjacent said channel.
  22. 22. The spinal fixation assembly according to claim 9, wherein said receiver member includes a second slot defined in each of said opposite first side walls, each said second slot extending from said channel toward said bottom end of said receiver member.
  23. 23. The spinal fixation assembly according to claim 21, wherein each said second slot intersects said recess.
  24. 24. The spinal fixation assembly according to claim 9, wherein said receiver member includes a second slot defined in each of said opposite first side wails, each said second slot extending from said bottom end toward said top end of said receiver member.
  25. 25. The spinal fixation assembly according to claim 24, wherein each said second slot intersects said recess.
  26. 26. The spinal fixation assembly according to claim 25, wherein said second slot terminates between said recess and said top end of said receiver member.
  27. 27. The spinal fixation assembly according to claim 26, wherein said second slot terminates adjacent said channel.
  28. 28. The spinal fixation assembly according to claim 9, wherein said opposite first side walls are substantially flat and said opposite second walls are curved.
  29. 29. The spinal fixation assembly according to claim 1, wherein:
    said elongated member is a rod having a rod diameter; and
    said channel has a channel diameter substantially equal to said rod diameter.
  30. 30. The spinal fixation assembly according to claim 29, wherein said upper opening of said channel has a width that is less than said rod diameter.
  31. 31. The spinal fixation assembly according to claim 29, wherein said upper opening of said channel has a width that is approximately equal to said rod diameter.
  32. 32. The spinal fixation assembly according to claim 1, wherein said receiver member further defines a flared opening from said recess to said bottom end of said member.
  33. 33. The spinal fixation assembly according to claim 1, wherein said receiver member further defines a bore extending from said top end of said receiver and communicating with said recess, said bore intersecting said channel and having a bore diameter.
  34. 34. The spinal fixation assembly according to claim 33, wherein:
    said elongated member is a rod having a rod diameter; and
    said channel has a channel diameter substantially equal to said rod diameter.
  35. 35. The spinal fixation assembly according to claim 34, wherein said bore of said receiver member said bore diameter is greater than said channel diameter.
  36. 36. The spinal fixation assembly according to claim 34, wherein said bore of said receiver member said bore diameter is approximately equal to said channel diameter.
  37. 37. The spinal fixation assembly according to claim 33;wherein said receiver member further defines a flared opening from said recess to said bottom end of said member.
  38. 38. The spinal fixation assembly according to claim 37, wherein said flared opening intersects said recess at a lower diameter greater than said bore diameter.
  39. 39. The spinal fixation assembly according to claim 37, wherein said flared opening intersects said recess at a lower diameter substantially equal to said bore diameter.
  40. 40. The spinal fixation assembly according to claim 1, wherein a portion of said upper opening of said channel is angled outwardly from said channel.
  41. 41. The spinal fixation assembly according to claim 1, wherein:
    said receiver member defines a groove; and
    said compression member is a ring sized to fit within said groove.
  42. 42. The spinal fixation assembly according to claim 41, wherein:
    a portion of said groove is flat and a remaining portion of said groove is curved; and
    said ring includes flat and curved portions substantially corresponding to said flat and curved portions of said lower groove.
  43. 43. The spinal fixation assembly according to claim 42, wherein said ring is a closed ring that entirely encircles said receiver member at said groove.
  44. 44. An assembly for engaging a bone engaging fastener having a head to an elongated member, said assembly comprising:
    a receiver member having a top end and an opposite bottom end, said member defining a recess for receiving the head of the bone engaging fastener therein, said recess having a lower opening at said bottom end of said receiver member through which a lower portion of the fastener extends, said member also including a channel having an upper opening at said top end of said receiver member, said channel being configured to receive the elongated member therein; and
    a compression member disposed around a portion of said receiver member, said compression member being formed of a temperature responsive material and having a first configuration at a first temperature and a different second configuration at a different second temperature in which said compression member contracts about said portion of said receiver member to thereby compress said receiver member about the head of the bone engaging fastener within said recess.
  45. 45. The spinal fixation assembly according to claim 44, wherein:
    said recess is disposed within said receiver member adjacent said bottom end thereof; and
    said receiver member defines a outer annular lower groove adjacent said bottom end, said groove configured to receive said compression member when said compression member is in said fist configuration.
  46. 46. The spinal fixation assembly according to claim 42, wherein:
    said receiver member includes an outer annular upper groove adjacent said top end thereof; and
    said assembly includes a second compression member configured to be received within said upper groove.
  47. 47. The spinal fixation assembly according to claim 46, wherein said second compression member is formed of a temperature responsive material having a first configuration to be received within said upper groove at substantially said first temperature and a different second configuration at substantially said different second temperature in which said second compression member contracts about said receiver member.
  48. 48. The spinal fixation assembly according to claim 44, wherein:
    said recess is disposed within said receiver member adjacent said bottom end thereof; and
    said receiver member defines an outer annular upper groove adjacent said top end, said groove configured to receive said compression member when said compression member is in said first configuration.
  49. 49. The spinal fixation assembly according to claim 44, wherein:
    said recess is disposed adjacent said bottom end of said receiver member; and
    said channel is disposed adjacent said top end of said receiver member and is disposed apart from said recess so that the head of the bone engaging fastener does not intersect said channel when the head is disposed within said recess.
  50. 50. The spinal fixation assembly according to claim 49, wherein:
    said assembly further including a second compression member formed of a temperature responsive material having a first configuration at substantially said first temperature and a different second configuration at substantially said different second temperature in which said second compression member contracts about said receiver member; and
    said receiver member defines an outer annular upper groove adjacent said top end thereof, said upper groove configured to receive said second compression member therein when said second compression member is in said first configuration, whereby said second compression member contracts about said receiver member in said different second configuration to compress said receiver member about the elongated member disposed within said channel.
  51. 51. The spinal fixation assembly according to claim 44, wherein said receiver member includes opposite first side side walls defining said channel and opposite second side walls intermediate said first side walls.
  52. 52. The spinal fixation assembly according to claim 51, wherein said receiver member includes a first slot defined in each of said opposite second side walls, each said first slot extending from said bottom end toward said top end of said receiver member.
  53. 53. The spinal fixation assembly according to claim 52, wherein each said first slot intersects said recess.
  54. 54. The spinal fixation assembly according to claim 53, wherein said first slot terminates at said recess.
  55. 55. The spinal fixation assembly according to claim 54, wherein said receiver member includes a second slot defined in each of said opposite first side walls, each said second slot extending from said channel toward said bottom end of said receiver member.
  56. 56. The spinal fixation assembly according to claim 55, wherein each said second slot intersects said recess.
  57. 57. The spinal fixation assembly according to claim 56, wherein said second slot terminates at said recess.
  58. 58. The spinal fixation assembly according to claim 56, wherein each said first slot intersects said recess.
  59. 59. The spinal fixation assembly according to claim 58, wherein said first slot terminates at said recess.
  60. 60. The spinal fixation assembly according to claim 52, wherein said receiver member includes a second slot defined in each of said opposite first side walls, each said second slot extending from said bottom end toward said top end of said receiver member.
  61. 61. The spinal fixation assembly according to claim 60, wherein each said second slot intersects said recess.
  62. 62. The spinal fixation assembly according to claim 61, wherein said second slot terminates between said recess and said top end of said receiver member.
  63. 63. The spinal fixation assembly according to claim 62, wherein said second slot terminates adjacent said channel.
  64. 64. The spinal fixation assembly according to claim 51, wherein said receiver member includes a second slot defined in each of said opposite first side walls, each said second slot extending from said channel toward said bottom end of said receiver member.
  65. 65. The spinal fixation assembly according to claim 63, wherein each said second slot intersects said recess.
  66. 66. The spinal fixation assembly according to claim 9, wherein said receiver member includes a second slot defined in each of said opposite first side walls, each said second slot extending from said bottom end toward said top end of said receiver member.
  67. 67. The spinal fixation assembly according to claim 66, wherein each said second slot intersects said recess.
  68. 68. The spinal fixation assembly according to claim 67, wherein said second slot terminates between said recess and said top end of said receiver member.
  69. 69. The spinal fixation assembly according to claim 68, wherein id second slot terminates adjacent said channel.
  70. 70. The spinal fixation assembly according to claim 51, wherein said opposite first side walls are substantially flat and said opposite second walls are curved.
  71. 71. The spinal fixation assembly according to claim 44, in which the elongated member is a rod having a rod diameter, wherein said channel has a channel diameter substantially equal to said rod diameter.
  72. 72. The spinal fixation assembly according to claim 71, wherein said upper opening of said channel has a width that is less than the rod diameter.
  73. 73. The spinal fixation assembly according to claim 71, wherein said upper opening of said channel has a width that is approximately equal to said rod diameter.
  74. 74. The spinal fixation assembly according to claim 44, wherein said receiver member further defines a flared opening from said recess to said bottom end of said member.
  75. 75. The spinal fixation assembly according to claim 44, wherein said receiver member further defines a bore extending from said top end of said receiver and communicating with said recess, said bore intersecting said channel and having a bore diameter.
  76. 76. The spinal fixation assembly according to claim 75, in which the elongated member is a rod having a rod diameter, wherein said channel has a channel diameter substantially equal to the rod diameter.
  77. 77. The spinal fixation assembly according to claim 76, wherein said bore of said receiver member said bore diameter is greater than said channel diameter.
  78. 78. The spinal fixation assembly according to claim 76, wherein said bore of said receiver member said bore diameter is approximately equal to said channel diameter.
  79. 79. The spinal fixation assembly according to claim 75, wherein said receiver member further defines a flared opening from said recess to said bottom end of said member.
  80. 80. The spinal fixation assembly according to claim 79, wherein said flared opening intersects said recess at a lower diameter greater than said bore diameter.
  81. 81. The spinal fixation assembly according to claim 79, wherein said flared opening intersects said recess at a lower diameter substantially equal to said bore diameter.
  82. 82. The spinal fixation assembly according to claim 44, wherein a portion of said upper opening of said channel is angled outwardly from said channel.
  83. 83. The spinal fixation assembly according to claim 44, wherein:
    said receiver member defines a groove; and
    said compression member is a ring sized to fit within said groove.
  84. 84. The spinal fixation assembly according to claim 83, wherein:
    a portion of said groove is flat and a remaining portion of said groove is curved; and
    said ring includes flat and curved portions substantially corresponding to said flat and curved portions of said lower grove.
  85. 85. The spinal fixation assembly according to claim 84, wherein said ring is a closed ring that entire encircles said receiver member at said groove.
US09944662 1996-11-07 2001-08-31 Multi-angle bone screw assembly using shape-memory technology Expired - Lifetime US6454773B1 (en)

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US08744403 US5728098A (en) 1996-11-07 1996-11-07 Multi-angle bone screw assembly using shape-memory technology
US09042911 US5954725A (en) 1996-11-07 1998-03-17 Multi-angle bone screw assembly using shape memory technology
US09313842 US6132434A (en) 1996-11-07 1999-05-17 Multi-angle bone screw assembly using shape-memory technology
US09595047 US6287311B1 (en) 1996-11-07 2000-06-12 Multi-angle bone screw assembly using shape-memory technology
US09944662 US6454773B1 (en) 1996-11-07 2001-08-31 Multi-angle bone screw assembly using shape-memory technology

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US09944662 US6454773B1 (en) 1996-11-07 2001-08-31 Multi-angle bone screw assembly using shape-memory technology

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US6454773B1 US6454773B1 (en) 2002-09-24

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US09313842 Expired - Fee Related US6132434A (en) 1996-11-07 1999-05-17 Multi-angle bone screw assembly using shape-memory technology
US09595047 Expired - Lifetime US6287311B1 (en) 1996-11-07 2000-06-12 Multi-angle bone screw assembly using shape-memory technology
US09944662 Expired - Lifetime US6454773B1 (en) 1996-11-07 2001-08-31 Multi-angle bone screw assembly using shape-memory technology

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US09313842 Expired - Fee Related US6132434A (en) 1996-11-07 1999-05-17 Multi-angle bone screw assembly using shape-memory technology
US09595047 Expired - Lifetime US6287311B1 (en) 1996-11-07 2000-06-12 Multi-angle bone screw assembly using shape-memory technology

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Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050131408A1 (en) * 2003-12-16 2005-06-16 Sicvol Christopher W. Percutaneous access devices and bone anchor assemblies
US20050228380A1 (en) * 2004-04-09 2005-10-13 Depuy Spine Inc. Instruments and methods for minimally invasive spine surgery
US20050277919A1 (en) * 2004-05-28 2005-12-15 Depuy Spine, Inc. Anchoring systems and methods for correcting spinal deformities
US20060264252A1 (en) * 2005-05-23 2006-11-23 White Gehrig H System and method for providing a host console for use with an electronic card game
US20070119164A1 (en) * 2005-10-28 2007-05-31 Searete Llc, A Limited Liability Corporation Of The State Of Delaware Self assembling/quick assembly structure using shape memory alloy materials
US20070167949A1 (en) * 2004-10-20 2007-07-19 Moti Altarac Screw systems and methods for use in stabilization of bone structures
US20070233080A1 (en) * 2006-03-20 2007-10-04 Sean Joo Na Poly-axial bone screw mating seat
US20070270832A1 (en) * 2006-05-01 2007-11-22 Sdgi Holdings, Inc. Locking device and method, for use in a bone stabilization system, employing a set screw member and deformable saddle member
US20070270831A1 (en) * 2006-05-01 2007-11-22 Sdgi Holdings, Inc. Bone anchor system utilizing a molded coupling member for coupling a bone anchor to a stabilization member and method therefor
US20070288002A1 (en) * 2006-05-30 2007-12-13 Carls Thomas A Locking device and method employing a posted member to control positioning of a stabilization member of a bone stabilization system
WO2008043254A1 (en) 2006-09-13 2008-04-17 The University Of Hong Kong Shape memory locking device for orthopedic implants
US20080215053A1 (en) * 2006-10-13 2008-09-04 Stryker Trauma Sa Prevention of re-use of a medical device
US20080234678A1 (en) * 2007-03-20 2008-09-25 Robert Gutierrez Rod reducer
US20090036934A1 (en) * 2007-07-31 2009-02-05 Lutz Biedermann Bone anchoring device
US20090082775A1 (en) * 2006-10-25 2009-03-26 Moti Altarac Spondylolisthesis reduction system and method
US20090105756A1 (en) * 2007-10-23 2009-04-23 Marc Richelsoph Spinal implant
WO2007053530A3 (en) * 2005-10-28 2009-05-07 Searete Llc Self assembling/quick assembly structure using shape memory alloy materials
US20090125047A1 (en) * 2005-07-22 2009-05-14 Joey Camia Reglos Tissue splitter
US20090125032A1 (en) * 2007-11-14 2009-05-14 Gutierrez Robert C Rod removal instrument
US20090143828A1 (en) * 2007-10-04 2009-06-04 Shawn Stad Methods and Devices For Minimally Invasive Spinal Connection Element Delivery
US20100114170A1 (en) * 2008-11-05 2010-05-06 K2M, Inc. Multi-planar taper lock screw with increased rod friction
US20100160976A1 (en) * 2008-12-23 2010-06-24 Lutz Biedermann Receiving part for receiving a rod for coupling the rod to a bone anchoring element and a bone anchoring device with such a receiving part
US20100168800A1 (en) * 2008-12-30 2010-07-01 Lutz Biedermann Receiving part for receiving a rod for coupling the rod to a bone anchoring element and a bone anchoring device with such a receiving part
US20100168801A1 (en) * 2008-12-29 2010-07-01 Lutz Biedermann Receiving part for receiving a rod for coupling the rod to a bone anchoring element and bone anchoring device with such a receiving part
US20100198271A1 (en) * 2009-02-02 2010-08-05 Vincent Leone Screw Sheath for Minimally Invasive Spinal Surgery and Method Relating Thereto
US7918857B2 (en) 2006-09-26 2011-04-05 Depuy Spine, Inc. Minimally invasive bone anchor extensions
US20110166610A1 (en) * 2009-08-07 2011-07-07 Moti Altarac Systems and methods for stabilization of bone structures, including thorocolumbar stabilization systems and methods
EP2462886A1 (en) * 2010-12-10 2012-06-13 Biedermann Technologies GmbH & Co. KG Receiving part for receiving a rod for coupling the rod to a bone anchoring element and a bone anchoring device
US8226690B2 (en) 2005-07-22 2012-07-24 The Board Of Trustees Of The Leland Stanford Junior University Systems and methods for stabilization of bone structures
US8617216B2 (en) 2010-04-05 2013-12-31 David L. Brumfield Fully-adjustable bone fixation device
US9421041B2 (en) 2008-09-09 2016-08-23 Marc E. Richelsoph Polyaxial screw assembly
US9526531B2 (en) 2013-10-07 2016-12-27 Intelligent Implant Systems, Llc Polyaxial plate rod system and surgical procedure
US9572599B1 (en) * 2009-11-11 2017-02-21 Nuvasive, Inc. Systems and methods for correcting spinal deformities
US9707096B2 (en) 2013-03-14 2017-07-18 K2M, Inc. Spinal fixation device

Families Citing this family (337)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69125519D1 (en) * 1990-02-05 1997-05-15 Scitex Corp Ltd Device and method for processing data, such as color images
US5728098A (en) 1996-11-07 1998-03-17 Sdgi Holdings, Inc. Multi-angle bone screw assembly using shape-memory technology
US20080215058A1 (en) * 1997-01-02 2008-09-04 Zucherman James F Spine distraction implant and method
EP0954247B1 (en) * 1997-01-22 2005-11-23 Synthes Ag Device for connecting a longitudinal bar to a pedicle screw
US6248105B1 (en) 1997-05-17 2001-06-19 Synthes (U.S.A.) Device for connecting a longitudinal support with a pedicle screw
US6010503A (en) * 1998-04-03 2000-01-04 Spinal Innovations, Llc Locking mechanism
US6258089B1 (en) * 1998-05-19 2001-07-10 Alphatec Manufacturing, Inc. Anterior cervical plate and fixation system
US6565565B1 (en) 1998-06-17 2003-05-20 Howmedica Osteonics Corp. Device for securing spinal rods
FR2780269B1 (en) * 1998-06-26 2003-10-17 Euros Sa spinal implant
US6187000B1 (en) 1998-08-20 2001-02-13 Endius Incorporated Cannula for receiving surgical instruments
DE69930391T2 (en) 1998-09-11 2006-12-07 Synthes Ag Chur, Chur The angle-adjustable fixation system for the spine
US5984924A (en) * 1998-10-07 1999-11-16 Isola Implants, Inc. Bone alignment system having variable orientation bone anchors
US5910142A (en) * 1998-10-19 1999-06-08 Bones Consulting, Llc Polyaxial pedicle screw having a rod clamping split ferrule coupling element
US6296642B1 (en) 1998-11-09 2001-10-02 Sdgi Holdings, Inc. Reverse angle thread for preventing splaying in medical devices
EP1253854A4 (en) * 1999-03-07 2010-01-06 Discure Ltd Method and apparatus for computerized surgery
US6210413B1 (en) * 1999-04-23 2001-04-03 Sdgi Holdings, Inc. Connecting apparatus using shape-memory technology
US6254602B1 (en) * 1999-05-28 2001-07-03 Sdgi Holdings, Inc. Advanced coupling device using shape-memory technology
US6273888B1 (en) 1999-05-28 2001-08-14 Sdgi Holdings, Inc. Device and method for selectively preventing the locking of a shape-memory alloy coupling system
US6280442B1 (en) * 1999-09-01 2001-08-28 Sdgi Holdings, Inc. Multi-axial bone screw assembly
US6322563B1 (en) * 1999-09-17 2001-11-27 Genzyme Corporation Small tissue and membrane fixation apparatus and methods for use thereof
US6293949B1 (en) * 2000-03-01 2001-09-25 Sdgi Holdings, Inc. Superelastic spinal stabilization system and method
US7985247B2 (en) * 2000-08-01 2011-07-26 Zimmer Spine, Inc. Methods and apparatuses for treating the spine through an access device
US7056321B2 (en) 2000-08-01 2006-06-06 Endius, Incorporated Method of securing vertebrae
US7837716B2 (en) * 2000-08-23 2010-11-23 Jackson Roger P Threadform for medical implant closure
CN1247162C (en) 2000-08-24 2006-03-29 库尔斯恩蒂斯股份公司 Device for connecting a bone fixation element to a longitudinal rod
US6485491B1 (en) 2000-09-15 2002-11-26 Sdgi Holdings, Inc. Posterior fixation system
DE10055888C1 (en) * 2000-11-10 2002-04-25 Biedermann Motech Gmbh Bone screw, has connector rod receiving part with unsymmetrically arranged end bores
US6368321B1 (en) * 2000-12-04 2002-04-09 Roger P. Jackson Lockable swivel head bone screw
US8377100B2 (en) * 2000-12-08 2013-02-19 Roger P. Jackson Closure for open-headed medical implant
US6565564B2 (en) * 2000-12-14 2003-05-20 Synthes U.S.A. Multi-pin clamp and rod attachment
US6488681B2 (en) 2001-01-05 2002-12-03 Stryker Spine S.A. Pedicle screw assembly
US6969610B2 (en) * 2001-01-12 2005-11-29 University Of Rochester Methods of modifying cell structure and remodeling tissue
US6802844B2 (en) * 2001-03-26 2004-10-12 Nuvasive, Inc Spinal alignment apparatus and methods
US6770075B2 (en) 2001-05-17 2004-08-03 Robert S. Howland Spinal fixation apparatus with enhanced axial support and methods for use
US20040243128A1 (en) * 2001-05-17 2004-12-02 Howland Robert S. Selective axis posterior lumbar spinal plating fixation apparatus and methods for use
US20060064092A1 (en) * 2001-05-17 2006-03-23 Howland Robert S Selective axis serrated rod low profile spinal fixation system
US7314467B2 (en) * 2002-04-24 2008-01-01 Medical Device Advisory Development Group, Llc. Multi selective axis spinal fixation system
US7186256B2 (en) 2001-06-04 2007-03-06 Warsaw Orthopedic, Inc. Dynamic, modular, single-lock anterior cervical plate system having assembleable and movable segments
US7118573B2 (en) 2001-06-04 2006-10-10 Sdgi Holdings, Inc. Dynamic anterior cervical plate system having moveable segments, instrumentation, and method for installation thereof
US7097645B2 (en) 2001-06-04 2006-08-29 Sdgi Holdings, Inc. Dynamic single-lock anterior cervical plate system having non-detachably fastened and moveable segments
WO2002098277A3 (en) 2001-06-04 2003-12-04 Gary K Michelson Anterior cervical plate system having vertebral body engaging anchors, connecting plate, and method for installation thereof
US7044952B2 (en) 2001-06-06 2006-05-16 Sdgi Holdings, Inc. Dynamic multilock anterior cervical plate system having non-detachably fastened and moveable segments
US7041105B2 (en) 2001-06-06 2006-05-09 Sdgi Holdings, Inc. Dynamic, modular, multilock anterior cervical plate system having detachably fastened assembleable and moveable segments
US6520963B1 (en) 2001-08-13 2003-02-18 Mckinley Lawrence M. Vertebral alignment and fixation assembly
US6974460B2 (en) 2001-09-14 2005-12-13 Stryker Spine Biased angulation bone fixation assembly
US6899714B2 (en) * 2001-10-03 2005-05-31 Vaughan Medical Technologies, Inc. Vertebral stabilization assembly and method
US7066937B2 (en) * 2002-02-13 2006-06-27 Endius Incorporated Apparatus for connecting a longitudinal member to a bone portion
US7879075B2 (en) * 2002-02-13 2011-02-01 Zimmer Spine, Inc. Methods for connecting a longitudinal member to a bone portion
US6837889B2 (en) 2002-03-01 2005-01-04 Endius Incorporated Apparatus for connecting a longitudinal member to a bone portion
US7530992B2 (en) * 2002-03-27 2009-05-12 Biedermann Motech Gmbh Bone anchoring device for stabilising bone segments and seat part of a bone anchoring device
DE10213855A1 (en) * 2002-03-27 2003-10-16 Biedermann Motech Gmbh Bone anchoring device for stabilizing bone segments and receiving part of a bone anchoring device
US6740086B2 (en) 2002-04-18 2004-05-25 Spinal Innovations, Llc Screw and rod fixation assembly and device
US7842073B2 (en) * 2002-04-18 2010-11-30 Aesculap Ii, Inc. Screw and rod fixation assembly and device
US20030204268A1 (en) * 2002-04-25 2003-10-30 Medicinelodge, Inc. Binary attachment mechanism and method for a modular prosthesis
US6875239B2 (en) * 2002-04-25 2005-04-05 Medicinelodge, Inc. Modular prosthesis for replacing bone and method
US7182786B2 (en) 2002-04-25 2007-02-27 Zimmer Technology, Inc. Modular bone implant, tool, and method
US6902583B2 (en) 2002-04-25 2005-06-07 Medicinelodge, Inc. Tripartite attachment mechanism and method for a modular prosthesis
FR2842093B1 (en) * 2002-07-12 2005-04-15 Scient X Bone anchor with spherical joint
US8926672B2 (en) 2004-11-10 2015-01-06 Roger P. Jackson Splay control closure for open bone anchor
US8257402B2 (en) * 2002-09-06 2012-09-04 Jackson Roger P Closure for rod receiving orthopedic implant having left handed thread removal
US20060009773A1 (en) * 2002-09-06 2006-01-12 Jackson Roger P Helical interlocking mating guide and advancement structure
US6726689B2 (en) * 2002-09-06 2004-04-27 Roger P. Jackson Helical interlocking mating guide and advancement structure
US8282673B2 (en) * 2002-09-06 2012-10-09 Jackson Roger P Anti-splay medical implant closure with multi-surface removal aperture
US8876868B2 (en) * 2002-09-06 2014-11-04 Roger P. Jackson Helical guide and advancement flange with radially loaded lip
KR100495876B1 (en) * 2002-11-25 2005-06-16 유앤아이 주식회사 bone fixation appratus and assembling method and tool
US6887276B2 (en) * 2002-12-13 2005-05-03 Medicine Lodge, Inc Modular implant for joint reconstruction and method of use
US6866683B2 (en) 2002-12-13 2005-03-15 Medicine Lodge, Inc. Modular implant for joint reconstruction and method of use
US7141051B2 (en) 2003-02-05 2006-11-28 Pioneer Laboratories, Inc. Low profile spinal fixation system
US20060200128A1 (en) * 2003-04-04 2006-09-07 Richard Mueller Bone anchor
US6964666B2 (en) * 2003-04-09 2005-11-15 Jackson Roger P Polyaxial bone screw locking mechanism
US8540753B2 (en) * 2003-04-09 2013-09-24 Roger P. Jackson Polyaxial bone screw with uploaded threaded shank and method of assembly and use
DE10319781B3 (en) * 2003-04-30 2004-08-26 Biedermann Motech Gmbh Bone anchor, to attach a component to the bone, has a head to hold the component and a shaft with screw thread sections and thread-free sections along the shaft length
US7377923B2 (en) 2003-05-22 2008-05-27 Alphatec Spine, Inc. Variable angle spinal screw assembly
US6986771B2 (en) * 2003-05-23 2006-01-17 Globus Medical, Inc. Spine stabilization system
US8377102B2 (en) 2003-06-18 2013-02-19 Roger P. Jackson Polyaxial bone anchor with spline capture connection and lower pressure insert
US8257398B2 (en) 2003-06-18 2012-09-04 Jackson Roger P Polyaxial bone screw with cam capture
US8366753B2 (en) * 2003-06-18 2013-02-05 Jackson Roger P Polyaxial bone screw assembly with fixed retaining structure
JP4357486B2 (en) * 2003-06-18 2009-11-04 ロジャー・ピー・ジャクソン Polyaxial bone screw having a splined catching connecting portion
US7967850B2 (en) 2003-06-18 2011-06-28 Jackson Roger P Polyaxial bone anchor with helical capture connection, insert and dual locking assembly
US8926670B2 (en) 2003-06-18 2015-01-06 Roger P. Jackson Polyaxial bone screw assembly
US6716214B1 (en) 2003-06-18 2004-04-06 Roger P. Jackson Polyaxial bone screw with spline capture connection
US8814911B2 (en) 2003-06-18 2014-08-26 Roger P. Jackson Polyaxial bone screw with cam connection and lock and release insert
US8398682B2 (en) 2003-06-18 2013-03-19 Roger P. Jackson Polyaxial bone screw assembly
US7309340B2 (en) 2003-06-20 2007-12-18 Medicinelodge, Inc. Method and apparatus for bone plating
US7087057B2 (en) * 2003-06-27 2006-08-08 Depuy Acromed, Inc. Polyaxial bone screw
US6945974B2 (en) * 2003-07-07 2005-09-20 Aesculap Inc. Spinal stabilization implant and method of application
US6945975B2 (en) * 2003-07-07 2005-09-20 Aesculap, Inc. Bone fixation assembly and method of securement
US7794476B2 (en) * 2003-08-08 2010-09-14 Warsaw Orthopedic, Inc. Implants formed of shape memory polymeric material for spinal fixation
US6981973B2 (en) * 2003-08-11 2006-01-03 Mckinley Laurence M Low profile vertebral alignment and fixation assembly
US7322981B2 (en) * 2003-08-28 2008-01-29 Jackson Roger P Polyaxial bone screw with split retainer ring
US8137386B2 (en) 2003-08-28 2012-03-20 Jackson Roger P Polyaxial bone screw apparatus
FR2859376B1 (en) * 2003-09-04 2006-05-19 Spine Next Sa spinal implant
JP2007506453A (en) * 2003-09-08 2007-03-22 ジンテーズ ゲゼルシャフト ミト ベシュレンクテル ハフツング Stringer
US7905907B2 (en) * 2003-10-21 2011-03-15 Theken Spine, Llc Internal structure stabilization system for spanning three or more structures
US7967826B2 (en) 2003-10-21 2011-06-28 Theken Spine, Llc Connector transfer tool for internal structure stabilization systems
US20050090823A1 (en) * 2003-10-28 2005-04-28 Bartimus Christopher S. Posterior fixation system
US7090674B2 (en) * 2003-11-03 2006-08-15 Spinal, Llc Bone fixation system with low profile fastener
US20050108754A1 (en) * 2003-11-19 2005-05-19 Serenade Systems Personalized content application
US8419770B2 (en) * 2003-12-10 2013-04-16 Gmedelaware 2 Llc Spinal facet implants with mating articulating bearing surface and methods of use
US7527638B2 (en) 2003-12-16 2009-05-05 Depuy Spine, Inc. Methods and devices for minimally invasive spinal fixation element placement
US20060161260A1 (en) * 2003-12-23 2006-07-20 Gareth Thomas Total wrist prosthesis
US20050143737A1 (en) * 2003-12-31 2005-06-30 John Pafford Dynamic spinal stabilization system
US7833251B1 (en) 2004-01-06 2010-11-16 Nuvasive, Inc. System and method for performing spinal fixation
US7556651B2 (en) * 2004-01-09 2009-07-07 Warsaw Orthopedic, Inc. Posterior spinal device and method
US7771479B2 (en) 2004-01-09 2010-08-10 Warsaw Orthopedic, Inc. Dual articulating spinal device and method
US20050171608A1 (en) * 2004-01-09 2005-08-04 Sdgi Holdings, Inc. Centrally articulating spinal device and method
US8900277B2 (en) 2004-02-26 2014-12-02 Pioneer Surgical Technology, Inc. Bone plate system
US7311712B2 (en) * 2004-02-26 2007-12-25 Aesculap Implant Systems, Inc. Polyaxial locking screw plate assembly
US7740649B2 (en) 2004-02-26 2010-06-22 Pioneer Surgical Technology, Inc. Bone plate system and methods
US7160300B2 (en) 2004-02-27 2007-01-09 Jackson Roger P Orthopedic implant rod reduction tool set and method
US7862587B2 (en) 2004-02-27 2011-01-04 Jackson Roger P Dynamic stabilization assemblies, tool set and method
CA2701522C (en) 2004-02-27 2012-05-15 Roger P. Jackson Orthopedic implant rod reduction tool set and method
US8292926B2 (en) 2005-09-30 2012-10-23 Jackson Roger P Dynamic stabilization connecting member with elastic core and outer sleeve
US7766915B2 (en) 2004-02-27 2010-08-03 Jackson Roger P Dynamic fixation assemblies with inner core and outer coil-like member
US8105368B2 (en) 2005-09-30 2012-01-31 Jackson Roger P Dynamic stabilization connecting member with slitted core and outer sleeve
US9050148B2 (en) 2004-02-27 2015-06-09 Roger P. Jackson Spinal fixation tool attachment structure
US8353932B2 (en) 2005-09-30 2013-01-15 Jackson Roger P Polyaxial bone anchor assembly with one-piece closure, pressure insert and plastic elongate member
US8308782B2 (en) 2004-11-23 2012-11-13 Jackson Roger P Bone anchors with longitudinal connecting member engaging inserts and closures for fixation and optional angulation
DE102004010380A1 (en) 2004-03-03 2005-09-22 Biedermann Motech Gmbh Anchoring element and the stabilization device for dynamic stabilization of vertebrae or bones with such anchoring element
US7344537B1 (en) * 2004-03-05 2008-03-18 Theken Spine, Llc Bone fixation rod system
US7214227B2 (en) * 2004-03-22 2007-05-08 Innovative Spinal Technologies Closure member for a medical implant device
US7678139B2 (en) * 2004-04-20 2010-03-16 Allez Spine, Llc Pedicle screw assembly
US8353941B2 (en) * 2004-06-02 2013-01-15 Synthes Usa, Llc Sleeve
US7857834B2 (en) * 2004-06-14 2010-12-28 Zimmer Spine, Inc. Spinal implant fixation assembly
US7731736B2 (en) * 2004-06-14 2010-06-08 Zimmer Spine, Inc. Fastening system for spinal stabilization system
US7727266B2 (en) 2004-06-17 2010-06-01 Warsaw Orthopedic, Inc. Method and apparatus for retaining screws in a plate
US7264621B2 (en) * 2004-06-17 2007-09-04 Sdgi Holdings, Inc. Multi-axial bone attachment assembly
US7766945B2 (en) * 2004-08-10 2010-08-03 Lanx, Inc. Screw and rod fixation system
DE202004020396U1 (en) 2004-08-12 2005-07-07 Columbus Trading-Partners Pos und Brendel GbR (vertretungsberechtigte Gesellschafter Karin Brendel, 95503 Hummeltal und Bohumila Pos, 95445 Bayreuth) Child seat for motor vehicles
WO2006016371A3 (en) * 2004-08-13 2006-05-04 Mazor Surgical Tech Ltd Minimally invasive spinal fusion
US7959653B2 (en) 2004-09-03 2011-06-14 Lanx, Inc. Spinal rod cross connector
US7651502B2 (en) 2004-09-24 2010-01-26 Jackson Roger P Spinal fixation tool set and method for rod reduction and fastener insertion
US8366747B2 (en) * 2004-10-20 2013-02-05 Zimmer Spine, Inc. Apparatus for connecting a longitudinal member to a bone portion
KR20070084138A (en) 2004-10-25 2007-08-24 알파스파인, 아이엔씨. Pedicle screw systems and methods of assembling/installing the same
WO2006047707A3 (en) * 2004-10-25 2006-06-22 Alphaspine Inc Pedicle screw systems and methods of assembling/installing the same
US7604655B2 (en) * 2004-10-25 2009-10-20 X-Spine Systems, Inc. Bone fixation system and method for using the same
US20060161152A1 (en) * 2004-10-25 2006-07-20 Alphaspine, Inc. Bone fixation systems and methods of assembling and/or installing the same
US7513905B2 (en) 2004-11-03 2009-04-07 Jackson Roger P Polyaxial bone screw
US7572279B2 (en) * 2004-11-10 2009-08-11 Jackson Roger P Polyaxial bone screw with discontinuous helically wound capture connection
WO2006052796A3 (en) 2004-11-10 2006-08-17 Roger P Jackson Helical guide and advancement flange with break-off extensions
US7833250B2 (en) 2004-11-10 2010-11-16 Jackson Roger P Polyaxial bone screw with helically wound capture connection
US7875065B2 (en) * 2004-11-23 2011-01-25 Jackson Roger P Polyaxial bone screw with multi-part shank retainer and pressure insert
US7621918B2 (en) 2004-11-23 2009-11-24 Jackson Roger P Spinal fixation tool set and method
US8152810B2 (en) 2004-11-23 2012-04-10 Jackson Roger P Spinal fixation tool set and method
US7625396B2 (en) * 2004-11-23 2009-12-01 Jackson Roger P Polyaxial bone screw with multi-part shank retainer
US7204838B2 (en) * 2004-12-20 2007-04-17 Jackson Roger P Medical implant fastener with nested set screw and method
US10076361B2 (en) 2005-02-22 2018-09-18 Roger P. Jackson Polyaxial bone screw with spherical capture, compression and alignment and retention structures
US7789896B2 (en) 2005-02-22 2010-09-07 Jackson Roger P Polyaxial bone screw assembly
US7338491B2 (en) * 2005-03-22 2008-03-04 Spinefrontier Inc Spinal fixation locking mechanism
US20080228186A1 (en) * 2005-04-01 2008-09-18 The Regents Of The University Of Colorado Graft Fixation Device
US7780706B2 (en) 2005-04-27 2010-08-24 Trinity Orthopedics, Llc Mono-planar pedicle screw method, system and kit
US7811310B2 (en) * 2005-05-04 2010-10-12 Spinefrontier, Inc Multistage spinal fixation locking mechanism
US7476239B2 (en) * 2005-05-10 2009-01-13 Jackson Roger P Polyaxial bone screw with compound articulation
US7776067B2 (en) 2005-05-27 2010-08-17 Jackson Roger P Polyaxial bone screw with shank articulation pressure insert and method
US20070043364A1 (en) * 2005-06-17 2007-02-22 Cawley Trace R Spinal correction system with multi-stage locking mechanism
US7766946B2 (en) * 2005-07-27 2010-08-03 Frank Emile Bailly Device for securing spinal rods
US7717943B2 (en) 2005-07-29 2010-05-18 X-Spine Systems, Inc. Capless multiaxial screw and spinal fixation assembly and method
US7761849B2 (en) * 2005-08-25 2010-07-20 Microsoft Corporation Automated analysis and recovery of localization data
US20070088436A1 (en) 2005-09-29 2007-04-19 Matthew Parsons Methods and devices for stenting or tamping a fractured vertebral body
US8012177B2 (en) 2007-02-12 2011-09-06 Jackson Roger P Dynamic stabilization assembly with frusto-conical connection
US20080147122A1 (en) * 2006-10-12 2008-06-19 Jackson Roger P Dynamic stabilization connecting member with molded inner segment and surrounding external elastomer
US7686835B2 (en) * 2005-10-04 2010-03-30 X-Spine Systems, Inc. Pedicle screw system with provisional locking aspects
US7927359B2 (en) * 2005-10-06 2011-04-19 Paradigm Spine, Llc Polyaxial screw
US8002806B2 (en) * 2005-10-20 2011-08-23 Warsaw Orthopedic, Inc. Bottom loading multi-axial screw assembly
US8100946B2 (en) * 2005-11-21 2012-01-24 Synthes Usa, Llc Polyaxial bone anchors with increased angulation
US7704271B2 (en) 2005-12-19 2010-04-27 Abdou M Samy Devices and methods for inter-vertebral orthopedic device placement
US9980753B2 (en) 2009-06-15 2018-05-29 Roger P Jackson pivotal anchor with snap-in-place insert having rotation blocking extensions
US9168069B2 (en) 2009-06-15 2015-10-27 Roger P. Jackson Polyaxial bone anchor with pop-on shank and winged insert with lower skirt for engaging a friction fit retainer
US8998959B2 (en) 2009-06-15 2015-04-07 Roger P Jackson Polyaxial bone anchors with pop-on shank, fully constrained friction fit retainer and lock and release insert
US9216041B2 (en) 2009-06-15 2015-12-22 Roger P. Jackson Spinal connecting members with tensioned cords and rigid sleeves for engaging compression inserts
US8556938B2 (en) 2009-06-15 2013-10-15 Roger P. Jackson Polyaxial bone anchor with non-pivotable retainer and pop-on shank, some with friction fit
US9668771B2 (en) 2009-06-15 2017-06-06 Roger P Jackson Soft stabilization assemblies with off-set connector
US9393047B2 (en) 2009-06-15 2016-07-19 Roger P. Jackson Polyaxial bone anchor with pop-on shank and friction fit retainer with low profile edge lock
US8444681B2 (en) 2009-06-15 2013-05-21 Roger P. Jackson Polyaxial bone anchor with pop-on shank, friction fit retainer and winged insert
US8057519B2 (en) 2006-01-27 2011-11-15 Warsaw Orthopedic, Inc. Multi-axial screw assembly
US7722652B2 (en) 2006-01-27 2010-05-25 Warsaw Orthopedic, Inc. Pivoting joints for spinal implants including designed resistance to motion and methods of use
US7833252B2 (en) * 2006-01-27 2010-11-16 Warsaw Orthopedic, Inc. Pivoting joints for spinal implants including designed resistance to motion and methods of use
US20070191842A1 (en) * 2006-01-30 2007-08-16 Sdgi Holdings, Inc. Spinal fixation devices and methods of use
US7811326B2 (en) * 2006-01-30 2010-10-12 Warsaw Orthopedic Inc. Posterior joint replacement device
US7635389B2 (en) * 2006-01-30 2009-12-22 Warsaw Orthopedic, Inc. Posterior joint replacement device
US7828829B2 (en) * 2006-03-22 2010-11-09 Pioneer Surgical Technology Inc. Low top bone fixation system and method for using the same
WO2007114834A1 (en) 2006-04-05 2007-10-11 Dong Myung Jeon Multi-axial, double locking bone screw assembly
US20070270813A1 (en) * 2006-04-12 2007-11-22 Laszlo Garamszegi Pedicle screw assembly
US20080015576A1 (en) * 2006-04-28 2008-01-17 Whipple Dale E Large diameter bone anchor assembly
US8133262B2 (en) * 2006-04-28 2012-03-13 Depuy Spine, Inc. Large diameter bone anchor assembly
US8361129B2 (en) 2006-04-28 2013-01-29 Depuy Spine, Inc. Large diameter bone anchor assembly
US8172882B2 (en) 2006-06-14 2012-05-08 Spartek Medical, Inc. Implant system and method to treat degenerative disorders of the spine
WO2008008511A3 (en) * 2006-07-14 2008-06-05 Laszlo Garamszegi Pedicle screw assembly with inclined surface seat
US20080027547A1 (en) * 2006-07-27 2008-01-31 Warsaw Orthopedic Inc. Prosthetic device for spinal joint reconstruction
US8162991B2 (en) * 2006-07-27 2012-04-24 K2M, Inc. Multi-planar, taper lock screw
FR2904526B1 (en) * 2006-08-01 2009-03-06 Warsaw Orthopedic Inc Element bone anchoring device for correcting deformations of the spine and correction device comprising the same.
WO2008022268A3 (en) * 2006-08-16 2008-06-12 Pioneer Surgical Tech Inc Spinal rod anchor device and method
US20080045968A1 (en) * 2006-08-18 2008-02-21 Warsaw Orthopedic, Inc. Instruments and Methods for Spinal Surgery
US8167910B2 (en) 2006-10-16 2012-05-01 Innovative Delta Technology Llc Bone screw and associated assembly and methods of use thereof
US7867258B2 (en) * 2006-10-17 2011-01-11 Warsaw Orthopedic, Inc. Multi-axial bone attachment member
US7699876B2 (en) * 2006-11-08 2010-04-20 Ebi, Llc Multi-axial bone fixation apparatus
US7744632B2 (en) 2006-12-20 2010-06-29 Aesculap Implant Systems, Inc. Rod to rod connector
US20080154378A1 (en) * 2006-12-22 2008-06-26 Warsaw Orthopedic, Inc. Bone implant having engineered surfaces
US20080161853A1 (en) * 2006-12-28 2008-07-03 Depuy Spine, Inc. Spine stabilization system with dynamic screw
US8636783B2 (en) * 2006-12-29 2014-01-28 Zimmer Spine, Inc. Spinal stabilization systems and methods
WO2008082836A1 (en) * 2006-12-29 2008-07-10 Abbott Spine Inc. Spinal stabilization systems and methods
JP5263978B2 (en) * 2007-01-12 2013-08-14 ランクス インコーポレイテッド Bone fastener assembly
US9962194B2 (en) 2007-01-15 2018-05-08 Innovative Delta Technology, Llc Polyaxial spinal stabilizer connector and methods of use thereof
US7794478B2 (en) * 2007-01-15 2010-09-14 Innovative Delta Technology, Llc Polyaxial cross connector and methods of use thereof
US8366745B2 (en) 2007-05-01 2013-02-05 Jackson Roger P Dynamic stabilization assembly having pre-compressed spacers with differential displacements
US20080319482A1 (en) * 2007-01-18 2008-12-25 Jackson Roger P Dynamic fixation assemblies with pre-tensioned cord segments
US8475498B2 (en) 2007-01-18 2013-07-02 Roger P. Jackson Dynamic stabilization connecting member with cord connection
US8092500B2 (en) 2007-05-01 2012-01-10 Jackson Roger P Dynamic stabilization connecting member with floating core, compression spacer and over-mold
US7901437B2 (en) 2007-01-26 2011-03-08 Jackson Roger P Dynamic stabilization member with molded connection
US20080200956A1 (en) * 2007-02-19 2008-08-21 Tutela Medicus, Llc Low Profile Orthopedic Fastener Assembly Having Enhanced Flexibility
US8167912B2 (en) 2007-02-27 2012-05-01 The Center for Orthopedic Research and Education, Inc Modular pedicle screw system
US8926669B2 (en) * 2007-02-27 2015-01-06 The Center For Orthopedic Research And Education, Inc. Modular polyaxial pedicle screw system
DE102007011093B3 (en) * 2007-02-28 2008-06-19 Aesculap Ag & Co. Kg Surgical data carrier for implantation system for marking medical implants, particularly surgical plate for fixing of bones or bone fragments, has actuating device, which is actuated by user
DE102007011086B3 (en) * 2007-02-28 2008-06-19 Aesculap Ag & Co. Kg Surgical data carrier for implantation system for marking system for marking medical implants, particularly surgical plate for fixing of bones or bone fragments, has implant, which is held in recess in connecting position
WO2008119006A1 (en) 2007-03-27 2008-10-02 Alpinespine Llc Pedicle screw system configured to receive a straight or a curved rod
US7967849B2 (en) * 2007-04-06 2011-06-28 Warsaw Orthopedic, Inc. Adjustable multi-axial spinal coupling assemblies
US8197517B1 (en) 2007-05-08 2012-06-12 Theken Spine, Llc Frictional polyaxial screw assembly
US7942910B2 (en) 2007-05-16 2011-05-17 Ortho Innovations, Llc Polyaxial bone screw
US7942911B2 (en) 2007-05-16 2011-05-17 Ortho Innovations, Llc Polyaxial bone screw
US8197518B2 (en) * 2007-05-16 2012-06-12 Ortho Innovations, Llc Thread-thru polyaxial pedicle screw system
US7951173B2 (en) * 2007-05-16 2011-05-31 Ortho Innovations, Llc Pedicle screw implant system
EP2160158A4 (en) 2007-05-31 2013-06-26 Roger P Jackson Dynamic stabilization connecting member with pre-tensioned solid core
US8092501B2 (en) 2007-06-05 2012-01-10 Spartek Medical, Inc. Dynamic spinal rod and method for dynamic stabilization of the spine
US8105356B2 (en) * 2007-06-05 2012-01-31 Spartek Medical, Inc. Bone anchor with a curved mounting element for a dynamic stabilization and motion preservation spinal implantation system and method
US7985243B2 (en) 2007-06-05 2011-07-26 Spartek Medical, Inc. Deflection rod system with mount for a dynamic stabilization and motion preservation spinal implantation system and method
US20100030224A1 (en) 2008-02-26 2010-02-04 Spartek Medical, Inc. Surgical tool and method for connecting a dynamic bone anchor and dynamic vertical rod
US8211155B2 (en) 2008-02-26 2012-07-03 Spartek Medical, Inc. Load-sharing bone anchor having a durable compliant member and method for dynamic stabilization of the spine
US7993372B2 (en) 2007-06-05 2011-08-09 Spartek Medical, Inc. Dynamic stabilization and motion preservation spinal implantation system with a shielded deflection rod system and method
US8114134B2 (en) 2007-06-05 2012-02-14 Spartek Medical, Inc. Spinal prosthesis having a three bar linkage for motion preservation and dynamic stabilization of the spine
US8333792B2 (en) 2008-02-26 2012-12-18 Spartek Medical, Inc. Load-sharing bone anchor having a deflectable post and method for dynamic stabilization of the spine
US8048115B2 (en) 2007-06-05 2011-11-01 Spartek Medical, Inc. Surgical tool and method for implantation of a dynamic bone anchor
US8021396B2 (en) 2007-06-05 2011-09-20 Spartek Medical, Inc. Configurable dynamic spinal rod and method for dynamic stabilization of the spine
US8057515B2 (en) 2008-02-26 2011-11-15 Spartek Medical, Inc. Load-sharing anchor having a deflectable post and centering spring and method for dynamic stabilization of the spine
US8097024B2 (en) 2008-02-26 2012-01-17 Spartek Medical, Inc. Load-sharing bone anchor having a deflectable post and method for stabilization of the spine
US8083772B2 (en) * 2007-06-05 2011-12-27 Spartek Medical, Inc. Dynamic spinal rod assembly and method for dynamic stabilization of the spine
US8016861B2 (en) * 2008-02-26 2011-09-13 Spartek Medical, Inc. Versatile polyaxial connector assembly and method for dynamic stabilization of the spine
US8267979B2 (en) 2008-02-26 2012-09-18 Spartek Medical, Inc. Load-sharing bone anchor having a deflectable post and axial spring and method for dynamic stabilization of the spine
US8298267B2 (en) 2007-06-05 2012-10-30 Spartek Medical, Inc. Spine implant with a deflection rod system including a deflection limiting shield associated with a bone screw and method
US8083775B2 (en) 2008-02-26 2011-12-27 Spartek Medical, Inc. Load-sharing bone anchor having a natural center of rotation and method for dynamic stabilization of the spine
US8337536B2 (en) 2008-02-26 2012-12-25 Spartek Medical, Inc. Load-sharing bone anchor having a deflectable post with a compliant ring and method for stabilization of the spine
US8864832B2 (en) * 2007-06-20 2014-10-21 Hh Spinal Llc Posterior total joint replacement
US20090005815A1 (en) * 2007-06-28 2009-01-01 Scott Ely Dynamic stabilization system
US8623019B2 (en) 2007-07-03 2014-01-07 Pioneer Surgical Technology, Inc. Bone plate system
US8361126B2 (en) 2007-07-03 2013-01-29 Pioneer Surgical Technology, Inc. Bone plate system
US8668725B2 (en) * 2007-07-13 2014-03-11 Southern Spine, Llc Bone screw
US9439681B2 (en) * 2007-07-20 2016-09-13 DePuy Synthes Products, Inc. Polyaxial bone fixation element
DE602008004916D1 (en) * 2007-07-20 2011-03-24 Synthes Gmbh Multi-axial bone fixation element
US20100160980A1 (en) * 2007-07-26 2010-06-24 Biotechni America Spine Group, Inc. Spinal fixation assembly
US20090069852A1 (en) * 2007-09-06 2009-03-12 Warsaw Orthopedic, Inc. Multi-Axial Bone Anchor Assembly
EP2335624B1 (en) * 2007-10-11 2012-08-29 Biedermann Technologies GmbH & Co. KG Bone anchoring device
US8911477B2 (en) 2007-10-23 2014-12-16 Roger P. Jackson Dynamic stabilization member with end plate support and cable core extension
US8398683B2 (en) * 2007-10-23 2013-03-19 Pioneer Surgical Technology, Inc. Rod coupling assembly and methods for bone fixation
WO2009055407A1 (en) * 2007-10-23 2009-04-30 K2M, Inc. Posterior pedicle screw having a taper lock
US8821546B2 (en) 2007-11-06 2014-09-02 Stanus Investments, Inc. Vertebral screw arrangement with locking pin
US9232968B2 (en) * 2007-12-19 2016-01-12 DePuy Synthes Products, Inc. Polymeric pedicle rods and methods of manufacturing
WO2009091811A1 (en) 2008-01-14 2009-07-23 Brenzel Michael P Apparatus and methods for fracture repair
US9060813B1 (en) 2008-02-29 2015-06-23 Nuvasive, Inc. Surgical fixation system and related methods
US7909857B2 (en) * 2008-03-26 2011-03-22 Warsaw Orthopedic, Inc. Devices and methods for correcting spinal deformities
US8123785B2 (en) * 2008-05-08 2012-02-28 Aesculap Implant Systems, Llc Minimally invasive spinal stabilization system
US8303628B2 (en) * 2008-05-14 2012-11-06 Dewey Jonathan M Spinal stabilization system
US20100004693A1 (en) * 2008-07-01 2010-01-07 Peter Thomas Miller Cam locking spine stabilization system and method
US8118837B2 (en) * 2008-07-03 2012-02-21 Zimmer Spine, Inc. Tapered-lock spinal rod connectors and methods for use
US8167914B1 (en) 2008-07-16 2012-05-01 Zimmer Spine, Inc. Locking insert for spine stabilization and method of use
US8197512B1 (en) 2008-07-16 2012-06-12 Zimmer Spine, Inc. System and method for spine stabilization using resilient inserts
US8157846B2 (en) * 2008-07-24 2012-04-17 Ingenium S.A. Locking mechanism with two-piece washer
EP2355725B1 (en) 2008-09-05 2017-03-08 Synthes GmbH Bone fixation assembly
ES2387512T3 (en) * 2008-09-05 2012-09-25 Biedermann Technologies Gmbh & Co. Kg Bone stabilization device, particularly for spinal
CA2736616A1 (en) 2008-09-12 2010-03-18 Marcel Mueller Spinal stabilizing and guiding fixation system
US9320546B2 (en) 2008-09-29 2016-04-26 DePuy Synthes Products, Inc. Polyaxial bottom-loading screw and rod assembly
US20100087873A1 (en) * 2008-10-06 2010-04-08 Warsaw Orthopedics, Inc. Surgical Connectors for Attaching an Elongated Member to a Bone
US8506601B2 (en) * 2008-10-14 2013-08-13 Pioneer Surgical Technology, Inc. Low profile dual locking fixation system and offset anchor member
JP2012508038A (en) 2008-11-03 2012-04-05 ジンテス ゲゼルシャフト ミット ベシュレンクテル ハフツング A single plane bone fixation assembly
US8696717B2 (en) * 2008-11-05 2014-04-15 K2M, Inc. Multi-planar, taper lock screw with additional lock
US8075603B2 (en) * 2008-11-14 2011-12-13 Ortho Innovations, Llc Locking polyaxial ball and socket fastener
US7947065B2 (en) * 2008-11-14 2011-05-24 Ortho Innovations, Llc Locking polyaxial ball and socket fastener
EP2191780B1 (en) 2008-11-28 2013-01-16 Biedermann Technologies GmbH & Co. KG Receiving part for receiving a rod for coupling the rod to a bone anchoring element and a bone anchoring device with such a receiving part
WO2011069000A3 (en) 2009-12-02 2011-10-20 Spartek Medical, Inc. Low profile spinal prosthesis incorporating a bone anchor having a deflectable post and a compound spinal rod
US8636778B2 (en) * 2009-02-11 2014-01-28 Pioneer Surgical Technology, Inc. Wide angulation coupling members for bone fixation system
US8641734B2 (en) * 2009-02-13 2014-02-04 DePuy Synthes Products, LLC Dual spring posterior dynamic stabilization device with elongation limiting elastomers
US8998961B1 (en) 2009-02-26 2015-04-07 Lanx, Inc. Spinal rod connector and methods
US8241341B2 (en) * 2009-03-20 2012-08-14 Spinal Usa, Inc. Pedicle screws and methods of using the same
US8900238B2 (en) * 2009-03-27 2014-12-02 Globus Medical, Inc. Devices and methods for inserting a vertebral fixation member
US9750545B2 (en) 2009-03-27 2017-09-05 Globus Medical, Inc. Devices and methods for inserting a vertebral fixation member
EP2419031B1 (en) * 2009-04-15 2016-11-30 Synthes GmbH Revision connector for spinal constructs
CN102458279B (en) 2009-06-17 2014-10-15 斯恩蒂斯有限公司 A connector for correcting spinal structure
US8876869B1 (en) 2009-06-19 2014-11-04 Nuvasive, Inc. Polyaxial bone screw assembly
US9320543B2 (en) * 2009-06-25 2016-04-26 DePuy Synthes Products, Inc. Posterior dynamic stabilization device having a mobile anchor
US9095444B2 (en) * 2009-07-24 2015-08-04 Warsaw Orthopedic, Inc. Implant with an interference fit fastener
US7942909B2 (en) 2009-08-13 2011-05-17 Ortho Innovations, Llc Thread-thru polyaxial pedicle screw system
EP2286748B1 (en) * 2009-08-20 2014-05-28 Biedermann Technologies GmbH & Co. KG Bone anchoring device
US8361123B2 (en) * 2009-10-16 2013-01-29 Depuy Spine, Inc. Bone anchor assemblies and methods of manufacturing and use thereof
US20110106157A1 (en) * 2009-10-30 2011-05-05 Warsaw Orthropedic, Inc. Self-Locking Interference Bone Screw for use with Spinal Implant
US8764806B2 (en) 2009-12-07 2014-07-01 Samy Abdou Devices and methods for minimally invasive spinal stabilization and instrumentation
CN102652003A (en) * 2009-12-11 2012-08-29 斯恩蒂斯有限公司 Bone fixation assembly
US20110178520A1 (en) 2010-01-15 2011-07-21 Kyle Taylor Rotary-rigid orthopaedic rod
US8636655B1 (en) 2010-01-19 2014-01-28 Ronald Childs Tissue retraction system and related methods
CA2823873A1 (en) 2010-01-20 2011-07-28 Conventus Orthopaedics, Inc. Apparatus and methods for bone access and cavity preparation
US20110196430A1 (en) * 2010-02-10 2011-08-11 Walsh David A Spinal fixation assembly with intermediate element
JP2013521880A (en) 2010-03-08 2013-06-13 コンベンタス オーソピディックス, インコーポレイテッド Apparatus and method for securing a bone implant
US9445844B2 (en) * 2010-03-24 2016-09-20 DePuy Synthes Products, Inc. Composite material posterior dynamic stabilization spring rod
US9198696B1 (en) 2010-05-27 2015-12-01 Nuvasive, Inc. Cross-connector and related methods
US20110307018A1 (en) 2010-06-10 2011-12-15 Spartek Medical, Inc. Adaptive spinal rod and methods for stabilization of the spine
US9084634B1 (en) 2010-07-09 2015-07-21 Theken Spine, Llc Uniplanar screw
WO2012030712A1 (en) 2010-08-30 2012-03-08 Zimmer Spine, Inc. Polyaxial pedicle screw
WO2012033532A8 (en) 2010-09-08 2014-03-06 Jackson Roger P Dynamic stabilization members with elastic and inelastic sections
US8562656B2 (en) 2010-10-15 2013-10-22 Warsaw Orrthopedic, Inc. Retaining mechanism
EP2637585A4 (en) 2010-11-10 2017-01-18 Jackson, Roger P. Polyaxial bone anchors with pop-on shank, friction fit fully restrained retainer, insert and tool receiving features
US9044274B2 (en) * 2010-12-01 2015-06-02 Amendia, Inc. Bone screw system
US9198692B1 (en) 2011-02-10 2015-12-01 Nuvasive, Inc. Spinal fixation anchor
US9247964B1 (en) 2011-03-01 2016-02-02 Nuasive, Inc. Spinal Cross-connector
US9387013B1 (en) 2011-03-01 2016-07-12 Nuvasive, Inc. Posterior cervical fixation system
US9427493B2 (en) 2011-03-07 2016-08-30 The Regents Of The University Of Colorado Shape memory polymer intraocular lenses
US9307972B2 (en) 2011-05-10 2016-04-12 Nuvasive, Inc. Method and apparatus for performing spinal fusion surgery
US9060818B2 (en) 2011-09-01 2015-06-23 DePuy Synthes Products, Inc. Bone implants
CN103826560A (en) 2011-09-23 2014-05-28 罗杰.P.杰克逊 Polyaxial bone anchor with pop-on shank and winged insert with friction fit compressive collet
US8911479B2 (en) 2012-01-10 2014-12-16 Roger P. Jackson Multi-start closures for open implants
US8430916B1 (en) 2012-02-07 2013-04-30 Spartek Medical, Inc. Spinal rod connectors, methods of use, and spinal prosthesis incorporating spinal rod connectors
US8828056B2 (en) 2012-04-16 2014-09-09 Aesculap Implant Systems, Llc Rod to rod cross connector
US8771319B2 (en) 2012-04-16 2014-07-08 Aesculap Implant Systems, Llc Rod to rod cross connector
ES2539388T3 (en) 2012-07-18 2015-06-30 Biedermann Technologies Gmbh & Co. Kg Device polyaxial bone anchoring
US8911478B2 (en) 2012-11-21 2014-12-16 Roger P. Jackson Splay control closure for open bone anchor
US10058354B2 (en) 2013-01-28 2018-08-28 Roger P. Jackson Pivotal bone anchor assembly with frictional shank head seating surfaces
US8852239B2 (en) 2013-02-15 2014-10-07 Roger P Jackson Sagittal angle screw with integral shank and receiver
US9453526B2 (en) 2013-04-30 2016-09-27 Degen Medical, Inc. Bottom-loading anchor assembly
US9566092B2 (en) 2013-10-29 2017-02-14 Roger P. Jackson Cervical bone anchor with collet retainer and outer locking sleeve
US9717533B2 (en) 2013-12-12 2017-08-01 Roger P. Jackson Bone anchor closure pivot-splay control flange form guide and advancement structure
US9451993B2 (en) 2014-01-09 2016-09-27 Roger P. Jackson Bi-radial pop-on cervical bone anchor
WO2015164051A1 (en) * 2014-04-21 2015-10-29 X-Spine Systems, Inc. Modular multi-axial screw system
US9597119B2 (en) 2014-06-04 2017-03-21 Roger P. Jackson Polyaxial bone anchor with polymer sleeve
US10064658B2 (en) 2014-06-04 2018-09-04 Roger P. Jackson Polyaxial bone anchor with insert guides
US9895171B2 (en) * 2014-07-29 2018-02-20 Transcendental Spine, Llc Modular polyaxial bone screw
GB201702701D0 (en) 2014-08-13 2017-04-05 Nuvasive Inc Minimally disruptive retractor and associated methods for spinal surgery
JP1516949S (en) * 2014-10-28 2015-02-09
US9763703B2 (en) 2015-05-05 2017-09-19 Degen Medical, Inc. Cross connectors, kits, and methods
EP3278750A1 (en) * 2016-08-04 2018-02-07 Biedermann Technologies GmbH & Co. KG Polyaxial bone anchoring device and system of an instrument and a polyaxial bone anchoring device
EP3287089A1 (en) * 2016-08-24 2018-02-28 Biedermann Technologies GmbH & Co. KG Polyaxial bone anchoring device and system of an instrument and a polyaxial bone anchoring device
US9763700B1 (en) 2016-12-14 2017-09-19 Spine Wave, Inc. Polyaxial bone screw

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3740839A (en) * 1971-06-29 1973-06-26 Raychem Corp Cryogenic connection method and means
GB1504704A (en) * 1974-05-14 1978-03-22 Raychem Ltd Heatrecoverable coupling
DE3614101C1 (en) * 1986-04-25 1987-10-22 Juergen Prof Dr Med Harms pedicle screw
US4805602A (en) * 1986-11-03 1989-02-21 Danninger Medical Technology Transpedicular screw and rod system
FR2633177B1 (en) 1988-06-24 1991-03-08 Fabrication Materiel Orthopedi Implant for spinal osteosynthesis device, in particular trauma
DE3823737C2 (en) * 1988-07-13 1990-05-03 Lutz 7730 Villingen-Schwenningen De Biedermann
DE3923996C2 (en) 1989-07-20 1993-08-26 Lutz 7730 Villingen-Schwenningen De Biedermann
US5002542A (en) * 1989-10-30 1991-03-26 Synthes U.S.A. Pedicle screw clamp
US5344422A (en) * 1989-10-30 1994-09-06 Synthes (U.S.A.) Pedicular screw clamp
WO1991016020A1 (en) * 1990-04-26 1991-10-31 Danninger Medical Technology, Inc. Transpedicular screw system and method of use
US5290289A (en) * 1990-05-22 1994-03-01 Sanders Albert E Nitinol spinal instrumentation and method for surgically treating scoliosis
US5176678A (en) * 1991-03-14 1993-01-05 Tsou Paul M Orthopaedic device with angularly adjustable anchor attachments to the vertebrae
US5261909A (en) 1992-02-18 1993-11-16 Danek Medical, Inc. Variable angle screw for spinal implant system
US5352226A (en) * 1993-02-08 1994-10-04 Lin Chih I Side locking system rotatable in all directions for use in spinal surgery
US5551871A (en) * 1993-03-05 1996-09-03 Besselink; Petrus A. Temperature-sensitive medical/dental apparatus
DE4307576C1 (en) * 1993-03-10 1994-04-21 Biedermann Motech Gmbh Bone screw esp. for spinal column correction - has U=shaped holder section for receiving straight or bent rod
FR2705226B1 (en) * 1993-05-17 1995-07-07 Tornier Sa Spinal fixator for holding a spine.
US5304179A (en) * 1993-06-17 1994-04-19 Amei Technologies Inc. System and method for installing a spinal fixation system at variable angles
US5466237A (en) 1993-11-19 1995-11-14 Cross Medical Products, Inc. Variable locking stabilizer anchor seat and screw
FR2725892A1 (en) * 1994-10-21 1996-04-26 Felman Daniel Vertebral implant insertion process using shape memory material
US5549608A (en) * 1995-07-13 1996-08-27 Fastenetix, L.L.C. Advanced polyaxial locking screw and coupling element device for use with rod fixation apparatus
US5578033A (en) * 1995-07-13 1996-11-26 Fastenetix, L.L.C. Advanced polyaxial locking hook and coupling element device for use with side loading rod fixation devices
US5575792A (en) * 1995-07-14 1996-11-19 Fastenetix, L.L.C. Extending hook and polyaxial coupling element device for use with top loading rod fixation devices
US5586984A (en) * 1995-07-13 1996-12-24 Fastenetix, L.L.C. Polyaxial locking screw and coupling element assembly for use with rod fixation apparatus
US5584834A (en) * 1995-07-13 1996-12-17 Fastenetix, L.L.C. Polyaxial locking screw and coupling element assembly for use with side loading rod fixation apparatus
US5554157A (en) * 1995-07-13 1996-09-10 Fastenetix, L.L.C. Rod securing polyaxial locking screw and coupling element assembly
US5683404A (en) * 1996-06-05 1997-11-04 Metagen, Llc Clamp and method for its use
US5728098A (en) 1996-11-07 1998-03-17 Sdgi Holdings, Inc. Multi-angle bone screw assembly using shape-memory technology

Cited By (81)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7854751B2 (en) 2003-12-16 2010-12-21 Dupuy Spine, Inc. Percutaneous access devices and bone anchor assemblies
US8617210B2 (en) 2003-12-16 2013-12-31 Depuy Spine, Sarl Percutaneous access devices and bone anchor assemblies
US20110060344A1 (en) * 2003-12-16 2011-03-10 Christopher Sicvol Percutaneous Access Devices And Bone Anchor Assemblies
US20050131408A1 (en) * 2003-12-16 2005-06-16 Sicvol Christopher W. Percutaneous access devices and bone anchor assemblies
US9439699B2 (en) 2003-12-16 2016-09-13 Medos International Sarl Percutaneous access devices and bone anchor assemblies
US8518082B2 (en) 2003-12-16 2013-08-27 Depuy Spine, Sarl Percutaneous access devices and bone anchor assemblies
US20050228380A1 (en) * 2004-04-09 2005-10-13 Depuy Spine Inc. Instruments and methods for minimally invasive spine surgery
US20050277919A1 (en) * 2004-05-28 2005-12-15 Depuy Spine, Inc. Anchoring systems and methods for correcting spinal deformities
US8540754B2 (en) 2004-05-28 2013-09-24 DePuy Synthes Products, LLC Anchoring systems and methods for correcting spinal deformities
US8992578B2 (en) 2004-05-28 2015-03-31 Depuy Synthes Products Llc Anchoring systems and methods for correcting spinal deformities
US7901435B2 (en) * 2004-05-28 2011-03-08 Depuy Spine, Inc. Anchoring systems and methods for correcting spinal deformities
US20110077688A1 (en) * 2004-05-28 2011-03-31 Depuy Spine, Inc. Anchoring systems and methods for correcting spinal deformities
US8267969B2 (en) 2004-10-20 2012-09-18 Exactech, Inc. Screw systems and methods for use in stabilization of bone structures
US20070167949A1 (en) * 2004-10-20 2007-07-19 Moti Altarac Screw systems and methods for use in stabilization of bone structures
US20110144701A1 (en) * 2004-10-20 2011-06-16 Exactech, Inc. Methods for stabilization of bone structures
US8551142B2 (en) 2004-10-20 2013-10-08 Exactech, Inc. Methods for stabilization of bone structures
US20060264252A1 (en) * 2005-05-23 2006-11-23 White Gehrig H System and method for providing a host console for use with an electronic card game
US20090125047A1 (en) * 2005-07-22 2009-05-14 Joey Camia Reglos Tissue splitter
US8523865B2 (en) 2005-07-22 2013-09-03 Exactech, Inc. Tissue splitter
US8226690B2 (en) 2005-07-22 2012-07-24 The Board Of Trustees Of The Leland Stanford Junior University Systems and methods for stabilization of bone structures
US20090071146A1 (en) * 2005-10-28 2009-03-19 Searete Llc Self assembling/quick assembly structure using shape memory alloy materials
US7469538B2 (en) * 2005-10-28 2008-12-30 Searete Llc Self assembling/quick assembly structure using shape memory alloy materials
US20070119164A1 (en) * 2005-10-28 2007-05-31 Searete Llc, A Limited Liability Corporation Of The State Of Delaware Self assembling/quick assembly structure using shape memory alloy materials
US8146357B2 (en) * 2005-10-28 2012-04-03 The Invention Science Fund I Llc Self assembling/quick assembly structure using shape memory alloy materials
WO2007053530A3 (en) * 2005-10-28 2009-05-07 Searete Llc Self assembling/quick assembly structure using shape memory alloy materials
US7867257B2 (en) * 2006-03-20 2011-01-11 Synthes Usa, Llc Poly-axial bone screw mating seat
US20070233080A1 (en) * 2006-03-20 2007-10-04 Sean Joo Na Poly-axial bone screw mating seat
US20070270832A1 (en) * 2006-05-01 2007-11-22 Sdgi Holdings, Inc. Locking device and method, for use in a bone stabilization system, employing a set screw member and deformable saddle member
US20070270831A1 (en) * 2006-05-01 2007-11-22 Sdgi Holdings, Inc. Bone anchor system utilizing a molded coupling member for coupling a bone anchor to a stabilization member and method therefor
US20070288002A1 (en) * 2006-05-30 2007-12-13 Carls Thomas A Locking device and method employing a posted member to control positioning of a stabilization member of a bone stabilization system
US7914559B2 (en) 2006-05-30 2011-03-29 Warsaw Orthopedic, Inc. Locking device and method employing a posted member to control positioning of a stabilization member of a bone stabilization system
EP2077779A1 (en) * 2006-09-13 2009-07-15 The University of Hong Kong Shape memory locking device for orthopedic implants
EP2077779A4 (en) * 2006-09-13 2012-07-25 Univ Hong Kong Shape memory locking device for orthopedic implants
WO2008043254A1 (en) 2006-09-13 2008-04-17 The University Of Hong Kong Shape memory locking device for orthopedic implants
US7918857B2 (en) 2006-09-26 2011-04-05 Depuy Spine, Inc. Minimally invasive bone anchor extensions
US7918858B2 (en) 2006-09-26 2011-04-05 Depuy Spine, Inc. Minimally invasive bone anchor extensions
US8828007B2 (en) 2006-09-26 2014-09-09 DePuy Synthes Products, LLC Minimally invasive bone anchor extensions
US9549762B2 (en) 2006-10-13 2017-01-24 Stryker European Holdings I, Llc Prevention of re-use of a medical device
US8382804B2 (en) * 2006-10-13 2013-02-26 Stryker Trauma Sa Prevention of re-use of a medical device
US20080215053A1 (en) * 2006-10-13 2008-09-04 Stryker Trauma Sa Prevention of re-use of a medical device
US20090082775A1 (en) * 2006-10-25 2009-03-26 Moti Altarac Spondylolisthesis reduction system and method
US20080234678A1 (en) * 2007-03-20 2008-09-25 Robert Gutierrez Rod reducer
US8096996B2 (en) 2007-03-20 2012-01-17 Exactech, Inc. Rod reducer
US20090036934A1 (en) * 2007-07-31 2009-02-05 Lutz Biedermann Bone anchoring device
EP2301457A1 (en) * 2007-07-31 2011-03-30 Biedermann Motech GmbH Bone anchoring device
EP2022423A1 (en) * 2007-07-31 2009-02-11 BIEDERMANN MOTECH GmbH Bone anchoring device
EP2022424A1 (en) * 2007-07-31 2009-02-11 BIEDERMANN MOTECH GmbH Bone anchoring device
US9289246B2 (en) 2007-07-31 2016-03-22 Biedermann Technologies Gmbh & Co. Kg Bone anchoring device
US8940024B2 (en) 2007-07-31 2015-01-27 Biedermann Technologies Gmbh & Co. Kg Bone anchoring device
US8192470B2 (en) 2007-07-31 2012-06-05 Biedermann Technologies Gmbh & Co. Kg Bone anchoring device
US20090143828A1 (en) * 2007-10-04 2009-06-04 Shawn Stad Methods and Devices For Minimally Invasive Spinal Connection Element Delivery
US8414588B2 (en) 2007-10-04 2013-04-09 Depuy Spine, Inc. Methods and devices for minimally invasive spinal connection element delivery
US20090105756A1 (en) * 2007-10-23 2009-04-23 Marc Richelsoph Spinal implant
US20110213419A1 (en) * 2007-10-23 2011-09-01 Blackstone Medical Inc. Spinal Implant
US9456851B2 (en) 2007-10-23 2016-10-04 Intelligent Implant Systems, Llc Spinal implant
US20090125032A1 (en) * 2007-11-14 2009-05-14 Gutierrez Robert C Rod removal instrument
US9421041B2 (en) 2008-09-09 2016-08-23 Marc E. Richelsoph Polyaxial screw assembly
US9433440B2 (en) 2008-09-09 2016-09-06 Intelligent Implant Systems Llc Polyaxial screw assembly
US9603629B2 (en) 2008-09-09 2017-03-28 Intelligent Implant Systems Llc Polyaxial screw assembly
US20100114170A1 (en) * 2008-11-05 2010-05-06 K2M, Inc. Multi-planar taper lock screw with increased rod friction
US8377101B2 (en) * 2008-11-05 2013-02-19 K2M, Inc. Multi-planar taper lock screw with increased rod friction
US8506610B2 (en) 2008-12-23 2013-08-13 Bierdermann Technologies GmbH & Co. KG Receiving part for receiving a rod for coupling the rod to a bone anchoring element and a bone anchoring device with such a receiving part
US20100160976A1 (en) * 2008-12-23 2010-06-24 Lutz Biedermann Receiving part for receiving a rod for coupling the rod to a bone anchoring element and a bone anchoring device with such a receiving part
US20100168801A1 (en) * 2008-12-29 2010-07-01 Lutz Biedermann Receiving part for receiving a rod for coupling the rod to a bone anchoring element and bone anchoring device with such a receiving part
US9005259B2 (en) 2008-12-29 2015-04-14 Biedermann Technologies Gmbh & Co. Kg Receiving part for receiving a rod for coupling the rod to a bone anchoring element and bone anchoring device with such a receiving part
US8636782B2 (en) 2008-12-29 2014-01-28 Biedermann Technologies Gmbh & Co. Kg Receiving part for receiving a rod for coupling the rod to a bone anchoring element and bone anchoring device with such a receiving part
US20100168800A1 (en) * 2008-12-30 2010-07-01 Lutz Biedermann Receiving part for receiving a rod for coupling the rod to a bone anchoring element and a bone anchoring device with such a receiving part
US8506609B2 (en) 2008-12-30 2013-08-13 Biedermann Technologies Gmbh & Co. Kg Receiving part for receiving a rod for coupling the rod to a bone anchoring element and a bone anchoring device with such a receiving part
US9023086B2 (en) 2008-12-30 2015-05-05 Biedermann Technologies Gmbh & Co. Kg Receiving part for receiving a rod for coupling the rod to a bone anchoring element and a bone anchoring device with such a receiving part
US9351766B2 (en) 2008-12-30 2016-05-31 Biederman Technologies GmbH & Co. KG Receiving part for receiving a rod for coupling the rod to a bone anchoring element and a bone anchoring device with such a receiving part
US20100198271A1 (en) * 2009-02-02 2010-08-05 Vincent Leone Screw Sheath for Minimally Invasive Spinal Surgery and Method Relating Thereto
US20110166610A1 (en) * 2009-08-07 2011-07-07 Moti Altarac Systems and methods for stabilization of bone structures, including thorocolumbar stabilization systems and methods
US9572599B1 (en) * 2009-11-11 2017-02-21 Nuvasive, Inc. Systems and methods for correcting spinal deformities
US8617216B2 (en) 2010-04-05 2013-12-31 David L. Brumfield Fully-adjustable bone fixation device
EP2462886A1 (en) * 2010-12-10 2012-06-13 Biedermann Technologies GmbH & Co. KG Receiving part for receiving a rod for coupling the rod to a bone anchoring element and a bone anchoring device
US9066759B2 (en) 2010-12-10 2015-06-30 Biedermann Technologies Gmbh & Co. Kg Receiving part for receiving a rod for coupling the rod to a bone anchoring element and a bone anchoring device
EP2737864A1 (en) * 2010-12-10 2014-06-04 Biedermann Technologies GmbH & Co. KG Receiving part for receiving a rod for coupling the rod to a bone anchoring element and a bone anchoring device
CN102525614A (en) * 2010-12-10 2012-07-04 比德尔曼技术有限责任两合公司 Receiving part for receiving a rod for coupling the rod to a bone anchoring element and a bone anchoring device
US9707096B2 (en) 2013-03-14 2017-07-18 K2M, Inc. Spinal fixation device
US9526531B2 (en) 2013-10-07 2016-12-27 Intelligent Implant Systems, Llc Polyaxial plate rod system and surgical procedure
US9956010B2 (en) 2013-10-07 2018-05-01 Intelligent Implant Systems, Llc Polyaxial plate rod system and surgical procedure

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US5954725A (en) 1999-09-21 grant
US6287311B1 (en) 2001-09-11 grant
EP0951247B1 (en) 2002-10-16 grant
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US6132434A (en) 2000-10-17 grant
US5728098A (en) 1998-03-17 grant
ES2186004T3 (en) 2003-05-01 grant
US6454773B1 (en) 2002-09-24 grant
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WO1998019616A1 (en) 1998-05-14 application
EP0951247A1 (en) 1999-10-27 application
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JP4008038B2 (en) 2007-11-14 grant
DE69716471T2 (en) 2003-06-26 grant

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