WO2007076265A1 - Vertebral rod assemblies and methods - Google Patents

Vertebral rod assemblies and methods Download PDF

Info

Publication number
WO2007076265A1
WO2007076265A1 PCT/US2006/061998 US2006061998W WO2007076265A1 WO 2007076265 A1 WO2007076265 A1 WO 2007076265A1 US 2006061998 W US2006061998 W US 2006061998W WO 2007076265 A1 WO2007076265 A1 WO 2007076265A1
Authority
WO
WIPO (PCT)
Prior art keywords
base
extension
fastener
assembly
vertebral
Prior art date
Application number
PCT/US2006/061998
Other languages
French (fr)
Inventor
William B. Null
Troy D. Drewy
Original Assignee
Warsaw Orthopedic, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Warsaw Orthopedic, Inc. filed Critical Warsaw Orthopedic, Inc.
Priority to AU2006330689A priority Critical patent/AU2006330689B2/en
Priority to EP06840231.2A priority patent/EP1973483B1/en
Priority to JP2008547686A priority patent/JP2009520577A/en
Priority to KR1020087017713A priority patent/KR101341032B1/en
Publication of WO2007076265A1 publication Critical patent/WO2007076265A1/en

Links

Classifications

    • 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
    • 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
    • A61B17/7002Longitudinal elements, e.g. rods
    • A61B17/7011Longitudinal element being non-straight, e.g. curved, angled or branched
    • 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
    • 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
    • A61B17/7002Longitudinal elements, e.g. rods
    • A61B17/7004Longitudinal elements, e.g. rods with a cross-section which varies along its length
    • A61B17/7005Parts of the longitudinal elements, e.g. their ends, being specially adapted to fit in the screw or hook heads
    • 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
    • A61B17/7056Hooks with specially-designed bone-contacting part
    • 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
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00Joints and connections
    • Y10T403/32Articulated members
    • Y10T403/32254Lockable at fixed position

Definitions

  • the present application relates generally to spinal implant assemblies, and more particularly to a vertebral rod system having first and second ecm&ectable and adjustable members.
  • the spine Is divided into four regions comprising the cervical, thoracic, lumbar, and sacrococcygeal regions.
  • the cervical region includes the top seven vertebrae identified as C1-C7.
  • the thoracic region includes the next twelve vertebrae identified as T1-T12.
  • the lumbar region includes five vertebrae L I-L5.
  • the sacrococcygeal region includes nine fused vertebrae that form the sacrum and the coccyx:.
  • the vertebrae of the spine are aligned in a curved configuration that includes a cervical curve, thoracic curve, and lumbosacral curve.
  • Vertebra! rods may be implanted to support and position the vertebrae in. one or more of these regions.
  • the rods extend along a section of the spine and are connected to the vertebrae with one or more fasteners.
  • the rods may have a curved configuration to conform to the curvature of the spine. Often times two or more rods are connected together and work in combination to support and position the vertebrae.
  • the rods may have the same or different shapes and sixes depending upon their position along the spine.
  • the vertebral rod assembly comprises first and second members that may rotate with respect to each other about s first axis.
  • Each of the first and second members includes a base and a vertebral support rod extending from the base.
  • the base on the first member includes- an extension member that extends into an opening formed in the base of the second member.
  • a fastener extends through a sklewa ⁇ ! of the base of the second member and into the opening to lock the first and second members, and to prevent the rotation of the first member and second member.
  • Figure 1 is a perspective view of a vertebral rod assembly according to one embodiment.
  • Figure 2 is a perspective view of a first member of a vertebral rod assembly according to one embodiment
  • Figure 3 h a perspective view of a second member of a vertebral rod assembly according to one er ⁇ bodi ⁇ ient.
  • Figure 4 Is a cross sectional view of one embodiment of a vertebral rod assembly.
  • Figure 5 Is a perspective view of a vertebral rod assembly according to one embodiment.
  • Figure 6 $s a perspective view a first member of a vertebral rod assembly according to one embodiment.
  • Figure 7 is a perspective view a second member of a vertebral rod assembly 1.5 according to one embodiment.
  • Figure S is a perspective view of a ring member according to one embodiment.
  • Figure 9 is a cross sectional view of one embodiment of a vertebral rod assembly.
  • Figure 10 is a cross sectional view of one embodiment of a vertebral rod assembly.
  • the present application is directed to vertebral rod assemblies, with one embodiment generally illustrated as element i0 in Figure 1, having first and second members 12, 14.
  • Members ⁇ 2 f 14 are selectively positionabie at a variety of angies to conform to the curvature of the patient's spine.
  • Each member 12, 14 includes a rod and a
  • a locking device locks the position of the members .12, 14 at the desired orientation to prevent further movement.
  • Figure 2 illustrates the first member ] 2 having a rod 16 and a base 18.
  • the rod .16 is attached to the base 1.8 arid, extends outward therefrom.
  • rod 16 and base ⁇ 8 are integrally formed together.
  • Base IS includes a first
  • splines 22a spaced thereabout forming a series of a3ten.iat.ifig ridges and valleys.
  • Splines 22a cover at least a portion of the first surface 20.
  • the splines 22a are spaced about the periphery, and extend radially Inward from an outer edge of the first surface 20 towards a central point as can be seen in Figure 2.
  • the splines 22a extend outwards from about the central point of tlie first surface 20 towards the periphery.
  • An extensions 24 extends outward from the first surface 20 and includes a shaft 26 5 having an angled surface 30 that, flares outward to form an enlarged head 28.
  • Surface 30 slopes outward away from the first surface 20 and terminates at a flat outer surface of the head 28.
  • a rim 32 may be positioned at the peripheral edges of the angled surface 30 and the head 28.
  • Figure 3 Illustrates the second member 14 having a rod 34 and a base 36.
  • rod 34 is attached to or integrally formed with the base 36 and extends outward therefrom.
  • Base 36 includes a first surface 38 having a plurality of splines 22b formed as alternating ridges and valleys. Splines 22h are formed to correspond to the size and spacing of splines 22a on the .first member 12.
  • An opening 40 extends from the first surface 3S into the interior of the base 36 and Is sized to receive the 1.5 extension 24.
  • One or .more openings 42 are formed in a sidewail of the base 36 and extend into the interior of the base 36.
  • a pair of openings 42 are positioned in the base 36 and spaced apart by about 180° (i.e., the openings 42 are on opposite sides of the base 36). Multiple openings 42 allow for easier access during the locking and unlocking procedures as will be discussed below. In one embodiment, the one or more 0 openings 42 may be threaded.
  • a fastener 44 extends through the opening 42 formed in the base 36.
  • fastener 44 is a screw having threads that engage the threads formed on the opening 42.
  • Fastener 44 inserts into the opening 42, and has a contact surface 46 that contacts against the surface 30 of the extension 24. The surfaces
  • 25 3 ⁇ > 46 have corresponding shapes to increase the area of contact between the iastenet 44 and extension 24 when the first and second members 12, 14 are coupled in a locked configuration.
  • the contact surface 46 at the end of the fastener 44 is angled and corresponds to the angle of surface 30. In other embodiments,, however, surfaces 30, 46 may not have corresponding shapes. In still other embodiments, fastener
  • Figure 4 illustrates the assembly 10 in a locked configuration. Placing the first and second members 12, 14 in this locked configuration prevents the first and second members 12, 14 from rotating relative to each other about an axis of rotation Rj. To rotate the first and second members 12, 14 about axis Rf, the assembly IO may be placed in an unlocked 5 configuration as described below in more detail.
  • the extension 24 of base 18 inserts into the opening 40 formed in the base 36.
  • splines 22a and 22b engage and interlock with each oilier. Once engaged, the interlocking splines 22a, 22b prevent the relative rotation of the first and second members 12, 14.
  • Fastener 44 inserts into opening 10 42 and is rotated about an. axis R* until fastener 44 engages second member .14. M a particular embodiment, fastener 44 inserts into opening 42 and is rotated about axis R? until the contact surface 46 engages the angled surface 30 of extension 24.
  • the axis of rotation R2 is substantially perpendicular to the axis of rotation Ri. In other embodiments, the axis of rotation Ra is substantially non-parallel to die axis of rotation Rj.
  • 0 fastener 44 is rotated about axis R2 such that contact surface 46 moves away from surface
  • first and/or second members 12, 14 may be rotated relative to each other by rotating first and/or second bases 16, 34 about axis R t .
  • Multiple openings 42 within the sidevval! of the base 36 provide additional options for locking the device. Positioning the members 12, 14 along the spine at the proper angle may result in one of the openings 42 being blocked. In this event, the fastener 44 may be inserted into a second opening 42 that is accessible. Additionally, more than one fastener 44 may be used for engagement with a different fastener 44 inserted within each of the openings 42.
  • Figures 5-1.0 illustrate another embodiment of assembly 10.
  • assembly 10 comprises the first and second members 12, 14, and ati end cap 50 coupled to assembly 1.0 using a mechanical, fastener 52.
  • first and second members 12, 14 are selectively positional ⁇ e at a variety of angles to conform the first and second rods 16, 34 generally to the curvature of the patient's spine.
  • FIGs 6-7 illustrate the first and second members 12. 14 in more detail.
  • surface 20 comprises splines 22a formed as a plurality of alternating ridges and valleys that extend radially inward from a sidewall 56.
  • Splines 22a are spaced inward from the sidewall 56 forming a generally flat edge surface 54a that extends around the periphery of base .1 S.
  • Shaft 26 comprises a substantially cylindrical member that connects to and extends outward from surface 20, A threaded opening 5 S at one end of shaft 26 extends iato the shaft.26.
  • the threaded opening 58 is formed io receive the mechanical fastener 52 that secures the end cap 50 to assembly 10.
  • Shaft 26 also includes a tab 60 extending from its exterior sidewall .
  • Tab 60 includes a ramped surface 64 that terminates at surface 62 that extends substantially perpendicular from the shaft 26.
  • a stop 66 extends outward beyond the surface 62 and has oae or more opposing contact surfaces 68.
  • tab 60 comprises part of the locking device that locks the position of the first and second members 12 ⁇ 14 at the desired orientation and may limit the angle through which the first and second members 12, 14 may rotate.
  • second member 14 includes a surface 70 having splines 22b comprising a plurality of ridges and valleys that extend radially inward towards the center of base 36.
  • the size and spacing of splines 22b corresponds generally to splines 22a.
  • a generally flat edge surface 54b extends between splines 22b and the peripheral edge of base 36.
  • Opening 74 with a notch 76 are formed in the surface 70, and opea into a receiving section 75. Opening 74 and notch 76 are sized to receive the shaft 26 aad the tab 60, respectively, when the first member 12 mates with the second member 14.
  • One or more openings 78 are formed in a sidewall of the base 36 and extend into the receiving section 75. The openings 78 may be disposed at any desired position on the sidewall of base 36. As described hi more detail below, the fastener 44 extends through the opening 78 to lock the first and second members 12, 14.
  • Figure 8 illustrates a ring 80 that fits within the receiving section 75 and extends around the shaft 26.
  • Ring 80 is a. substantially cylindrical member that includes an outer sidewall S2 and an inner sidewall 84 thai form a cavity 86.
  • a notch SS is formed on the inner sidewall 84 to receive the tab 60 extending from the shaft 26,
  • An angled surface 90 slopes upward from a peripheral edge of the inner sidewaO S4 and is angled to correspond to the angle of the ramped surface 64. Angled surface 90 also extends around the inner circumference of the ring 80 from the notch SS to a stop surface 92.
  • a threaded opening 94 extends through the ring into the cavity 86 and is sized to receive fastener 44.
  • a stop surface 92 is formed at one end of the angled surface 90, Stop surface 92 contacts the stop 66 on the tab 60 to control the extent of relative rotati on of the first and second members i2 ? 14.
  • the ramped surface 64 may slide along angled surface 90 until the contact surface 68 of the stop 66 engages the stop surface 92.
  • the stop surface 92 may be .formed on the ring 80 at any position such that the first and second members 12., 14 may only rotate a predetermined distance in one direction to limit the rotation.
  • Figure 9 illustrates a cross sectional view of the assembly 10.
  • placing the first and second members 12. 14 in this locked configuration prevents the first and second members 12, 14 from rotating relative to each other about the axis of rotation R ⁇
  • ting 80 is positioned within, the receiving section 75 with opening 94 in the ring aligning with the opening 78 in the base 36.
  • An outer diameter of the ring 80 is smaller than an inner diameter of the receiving section 75 such that the flag 80 can move along axis Ri within the receiving section 75.
  • the shaft 26 inserts Into tlie opening 74 with, the tab 60 aligni rig with the notch 76 in the opening and the notch SS in the ring 80.
  • Fastener 44 is Initi ally inserted into openings 78, 94. Prior to tightening the fastener 44, first and second members 12, 14 are rotated to position the rods 16, 34, Once oriented, fastener 44 is tightened causing the ring SO to move along axis Rj within the receiving section 75 towards the fastener 44. This movement, in turn, causes the angled surface 90 on the ring 80 to contact and apply a locking force to the ramped surface 64 on the tab 60. Adjusting the fastener 44 within the openings 78, 94 adjusts the degree of the locking force and thus prevents further .rotation of the first and second members 12, 14.
  • End cap 50 may be connected to assembly 10 using screw 52. End cap 50 is sized to extend across the receiving section 75, End cap 50 may further include a gasket to sealmgly engage the sidewalJ of the base 36 and seal the receiving section 75.
  • Figure 10 illustrates another embodiment with a shaft 26 that terminates at a head 28. Both the shaft 26 and head 28 have a substantially constant width that form a 'T ! .
  • Fastener 44 includes a contact surface 47 that engages the shaft 26 to lock the device 10. Contact surface 47 substantially matches the shaft 26 to increase the contact area.
  • Fastener 44 may further be positioned for an. edge to contact the head 28 to farther lock the device 10, in one embodiment, the locking force is provided between trie contact surface 47 and the shaft. 26, In another embodiment, the locking force is provided between the edge of the fastener 44 and head 28.
  • bases 18 and 36 may have other shapes and sizes, .Further, lhe shapes and sizes of the bases 18, 36 may be the same or may be different Likewise, the various openings may have different shapes and sizes to receive one or .more various sizes and/or types of fasteners.
  • Rods 16 and 34 may have variety of lengths and diameters.
  • the lengths and/or diameters of one or both of the rods 16, 34 may be the same or different
  • one or both of the rods 16, 34 may be integrally formed with the sidewalls of their respective bases 16, 36, or formed separately aad attached to the sidewalls of their respective bases 18, 36.
  • splines 22a, 22b may extend continuously around their respective bases 16» 34 or alternatively, may be formed in sections that are spaced apart along the surfaces of the first and second bases 18, 36.
  • axes of rotation Rl and R2 are substantially perpendicular. Examples include the embodiment illustrated in Figures 4, 9, and 10, In ofher embodiments, however, the axes are aligned at a variety of angular orientations. Further, axis R2 may be aligned to be substantially parallel with one or both rods 16, 34. In other embodiments, axis R2 may be positioned in a non-parallel manner.
  • a seal may be placed on one or both bases 1.8. 36 to sealingly engage the bases together in the locked configuration..

Abstract

A vertebral rod assembly comprises first and second members (12, 14) that may rotate about a first axis (Rl). Each of the first and second members includes a base (18, 36) and a vertebral support rod (16, 34) extending from the base. An extension (24, 26) extends from the base (18) on the first member (12) into an opening (40, 74) formed in the base (36) of the second section (14). A fastener (44) extends through the base of the second member to lock the first and second members, and to prevent the rotation of the first member and second member.

Description

VERTEBRAE ROD ASSEMBLIES AND METHODS
BACKGROUND
The present application relates generally to spinal implant assemblies, and more particularly to a vertebral rod system having first and second ecm&ectable and adjustable members.
The spine Is divided into four regions comprising the cervical, thoracic, lumbar, and sacrococcygeal regions. The cervical region includes the top seven vertebrae identified as C1-C7. The thoracic region includes the next twelve vertebrae identified as T1-T12. The lumbar region includes five vertebrae L I-L5. The sacrococcygeal region includes nine fused vertebrae that form the sacrum and the coccyx:. The vertebrae of the spine are aligned in a curved configuration that includes a cervical curve, thoracic curve, and lumbosacral curve.
Vertebra! rods may be implanted to support and position the vertebrae in. one or more of these regions. The rods extend along a section of the spine and are connected to the vertebrae with one or more fasteners. The rods may have a curved configuration to conform to the curvature of the spine. Often times two or more rods are connected together and work in combination to support and position the vertebrae. The rods may have the same or different shapes and sixes depending upon their position along the spine.
Summary
The present application relates to a vertebral rod assembly. In one embodiment, the vertebral rod assembly comprises first and second members that may rotate with respect to each other about s first axis. Each of the first and second members includes a base and a vertebral support rod extending from the base. The base on the first member includes- an extension member that extends into an opening formed in the base of the second member. A fastener extends through a sklewaϊ! of the base of the second member and into the opening to lock the first and second members, and to prevent the rotation of the first member and second member. Brief Description of the Drawings
Figure 1 is a perspective view of a vertebral rod assembly according to one embodiment.
5 Figure 2 is a perspective view of a first member of a vertebral rod assembly according to one embodiment
Figure 3 h a perspective view of a second member of a vertebral rod assembly according to one erøbodiβient.
Figure 4 Is a cross sectional view of one embodiment of a vertebral rod assembly. 10 Figure 5 Is a perspective view of a vertebral rod assembly according to one embodiment.
Figure 6 $s a perspective view a first member of a vertebral rod assembly according to one embodiment.
Figure 7 is a perspective view a second member of a vertebral rod assembly 1.5 according to one embodiment.
Figure S is a perspective view of a ring member according to one embodiment.
Figure 9 is a cross sectional view of one embodiment of a vertebral rod assembly.
Figure 10 is a cross sectional view of one embodiment of a vertebral rod assembly.
0 Detailed Description
The present application is directed to vertebral rod assemblies, with one embodiment generally illustrated as element i0 in Figure 1, having first and second members 12, 14. Members ϊ2f 14 are selectively positionabie at a variety of angies to conform to the curvature of the patient's spine. Each member 12, 14 includes a rod and a
25 base. A locking device locks the position of the members .12, 14 at the desired orientation to prevent further movement..
Figure 2 illustrates the first member ] 2 having a rod 16 and a base 18. In one embodiment the rod .16 is attached to the base 1.8 arid, extends outward therefrom. .Tn one embodiment, rod 16 and base Ϊ8 are integrally formed together. Base IS includes a first
30 surface 20 having a plurality of splines 22a spaced thereabout forming a series of a3ten.iat.ifig ridges and valleys. Splines 22a cover at least a portion of the first surface 20. In one embodiment, the splines 22a are spaced about the periphery, and extend radially Inward from an outer edge of the first surface 20 towards a central point as can be seen in Figure 2. In another embodiment, the splines 22a extend outwards from about the central point of tlie first surface 20 towards the periphery.
An extensions 24 extends outward from the first surface 20 and includes a shaft 26 5 having an angled surface 30 that, flares outward to form an enlarged head 28. Surface 30 slopes outward away from the first surface 20 and terminates at a flat outer surface of the head 28. A rim 32 may be positioned at the peripheral edges of the angled surface 30 and the head 28.
Figure 3 Illustrates the second member 14 having a rod 34 and a base 36. As with 10 the first, member 12, rod 34 is attached to or integrally formed with the base 36 and extends outward therefrom. Base 36 includes a first surface 38 having a plurality of splines 22b formed as alternating ridges and valleys. Splines 22h are formed to correspond to the size and spacing of splines 22a on the .first member 12. An opening 40 extends from the first surface 3S into the interior of the base 36 and Is sized to receive the 1.5 extension 24. One or .more openings 42 are formed in a sidewail of the base 36 and extend into the interior of the base 36. In one embodiment, a pair of openings 42 are positioned in the base 36 and spaced apart by about 180° (i.e., the openings 42 are on opposite sides of the base 36). Multiple openings 42 allow for easier access during the locking and unlocking procedures as will be discussed below. In one embodiment, the one or more 0 openings 42 may be threaded.
A fastener 44 extends through the opening 42 formed in the base 36. In the embodiment illustrated in Figure 4, fastener 44 is a screw having threads that engage the threads formed on the opening 42. Fastener 44 inserts into the opening 42, and has a contact surface 46 that contacts against the surface 30 of the extension 24. The surfaces
25 3ø> 46 have corresponding shapes to increase the area of contact between the iastenet 44 and extension 24 when the first and second members 12, 14 are coupled in a locked configuration. As illustrated in Figure 4, the contact surface 46 at the end of the fastener 44 is angled and corresponds to the angle of surface 30. In other embodiments,, however, surfaces 30, 46 may not have corresponding shapes. In still other embodiments, fastener
30 contact surface 46 and/or the inserted end of the fastener 44 are shaped to engage the shaft
26. Figure 4 illustrates the assembly 10 in a locked configuration. Placing the first and second members 12, 14 in this locked configuration prevents the first and second members 12, 14 from rotating relative to each other about an axis of rotation Rj. To rotate the first and second members 12, 14 about axis Rf, the assembly IO may be placed in an unlocked 5 configuration as described below in more detail.
As seen in Figure 4, the extension 24 of base 18 inserts into the opening 40 formed in the base 36. When extension 24 is fully inserted, splines 22a and 22b engage and interlock with each oilier. Once engaged, the interlocking splines 22a, 22b prevent the relative rotation of the first and second members 12, 14. Fastener 44 inserts into opening 10 42 and is rotated about an. axis R* until fastener 44 engages second member .14. M a particular embodiment, fastener 44 inserts into opening 42 and is rotated about axis R? until the contact surface 46 engages the angled surface 30 of extension 24. Continuing to rotate fastener 44 about axis Rs causes the contact surface 46 to apply a force to the angled surface 30 that locks the second base 36 to the first base 1 S, This prevents the separation 1.5 and rotation of the first and second members 12, 14. This force also maintains the splines
22a, 22b in the interlocking relationship. In the embodiment of Figure 4, the axis of rotation R2 is substantially perpendicular to the axis of rotation Ri. In other embodiments, the axis of rotation Ra is substantially non-parallel to die axis of rotation Rj.
To place the assembly 10 in the unlocked configuration, in one embodiment 0 fastener 44 is rotated about axis R2 such that contact surface 46 moves away from surface
30. This movement releases the locking force that contact surface 46 applies to the angled surface 30. This movement also allows for disengaging the interlocked splines 22a, 22b. Once the splines 22s, 22b are disengaged, the first and/or second members 12, 14 may be rotated relative to each other by rotating first and/or second bases 16, 34 about axis Rt. it
25 is not necessary to separate the contact surface 46 from the angled surface 30 completely, nor is it necessary to remove fastener 44 from base 36 altogether. Rather, it is. enough to rotate fastener 44 a sufficient amount to reduce the force applied by the contact surface 46 to the angled surface 30 and. to disengage the splines such that, the first and second members .12, 1.4 may rotate relative to one another.
30 Multiple openings 42 within the sidevval! of the base 36 provide additional options for locking the device. Positioning the members 12, 14 along the spine at the proper angle may result in one of the openings 42 being blocked. In this event, the fastener 44 may be inserted into a second opening 42 that is accessible. Additionally, more than one fastener 44 may be used for engagement with a different fastener 44 inserted within each of the openings 42.
Figures 5-1.0 illustrate another embodiment of assembly 10. As seen, in Figure 5, assembly 10 comprises the first and second members 12, 14, and ati end cap 50 coupled to assembly 1.0 using a mechanical, fastener 52. As in the previous embodiment, the first and second members 12, 14 are selectively positional^ e at a variety of angles to conform the first and second rods 16, 34 generally to the curvature of the patient's spine.
Figures 6-7 illustrate the first and second members 12. 14 in more detail. As seen in Figure 6, surface 20 comprises splines 22a formed as a plurality of alternating ridges and valleys that extend radially inward from a sidewall 56. Splines 22a are spaced inward from the sidewall 56 forming a generally flat edge surface 54a that extends around the periphery of base .1 S. Shaft 26 comprises a substantially cylindrical member that connects to and extends outward from surface 20, A threaded opening 5 S at one end of shaft 26 extends iato the shaft.26. The threaded opening 58 is formed io receive the mechanical fastener 52 that secures the end cap 50 to assembly 10.
Shaft 26 also includes a tab 60 extending from its exterior sidewall . Tab 60 includes a ramped surface 64 that terminates at surface 62 that extends substantially perpendicular from the shaft 26. A stop 66 extends outward beyond the surface 62 and has oae or more opposing contact surfaces 68. As described below in more detail, tab 60 comprises part of the locking device that locks the position of the first and second members 12^ 14 at the desired orientation and may limit the angle through which the first and second members 12, 14 may rotate.
As best seen in Figure 7, second member 14 includes a surface 70 having splines 22b comprising a plurality of ridges and valleys that extend radially inward towards the center of base 36. The size and spacing of splines 22b corresponds generally to splines 22a. A generally flat edge surface 54b extends between splines 22b and the peripheral edge of base 36. When the first member 12 is mated to the second member 14. the splines 22b extend into the base 18 to engage with the splines 22a. Additionally, the .flat edge surface 54b contacts corresponding flat edge surface 54a on base 18.
An opening 74 with a notch 76 are formed in the surface 70, and opea into a receiving section 75. Opening 74 and notch 76 are sized to receive the shaft 26 aad the tab 60, respectively, when the first member 12 mates with the second member 14. One or more openings 78 are formed in a sidewall of the base 36 and extend into the receiving section 75. The openings 78 may be disposed at any desired position on the sidewall of base 36. As described hi more detail below, the fastener 44 extends through the opening 78 to lock the first and second members 12, 14.
Figure 8 illustrates a ring 80 that fits within the receiving section 75 and extends around the shaft 26. Ring 80 is a. substantially cylindrical member that includes an outer sidewall S2 and an inner sidewall 84 thai form a cavity 86. A notch SS is formed on the inner sidewall 84 to receive the tab 60 extending from the shaft 26, An angled surface 90 slopes upward from a peripheral edge of the inner sidewaO S4 and is angled to correspond to the angle of the ramped surface 64. Angled surface 90 also extends around the inner circumference of the ring 80 from the notch SS to a stop surface 92. A threaded opening 94 extends through the ring into the cavity 86 and is sized to receive fastener 44. In one embodiment, a stop surface 92 is formed at one end of the angled surface 90, Stop surface 92 contacts the stop 66 on the tab 60 to control the extent of relative rotati on of the first and second members i2? 14. During rotation, the ramped surface 64 may slide along angled surface 90 until the contact surface 68 of the stop 66 engages the stop surface 92. In one embodiment as illustrated in Figure SN members 12, 14 rotate through an angle of approximately ISO *. However, those skilled, in the art will readily appreciate that the stop surface 92 may be .formed on the ring 80 at any position such that the first and second members 12., 14 may only rotate a predetermined distance in one direction to limit the rotation.
Figure 9 illustrates a cross sectional view of the assembly 10. As in the previous embodiment, placing the first and second members 12. 14 in this locked configuration prevents the first and second members 12, 14 from rotating relative to each other about the axis of rotation R^ During assembly, ting 80 is positioned within, the receiving section 75 with opening 94 in the ring aligning with the opening 78 in the base 36. An outer diameter of the ring 80 is smaller than an inner diameter of the receiving section 75 such that the flag 80 can move along axis Ri within the receiving section 75. Further, the shaft 26 inserts Into tlie opening 74 with, the tab 60 aligni rig with the notch 76 in the opening and the notch SS in the ring 80. Fastener 44 is Initi ally inserted into openings 78, 94. Prior to tightening the fastener 44, first and second members 12, 14 are rotated to position the rods 16, 34, Once oriented, fastener 44 is tightened causing the ring SO to move along axis Rj within the receiving section 75 towards the fastener 44. This movement, in turn, causes the angled surface 90 on the ring 80 to contact and apply a locking force to the ramped surface 64 on the tab 60. Adjusting the fastener 44 within the openings 78, 94 adjusts the degree of the locking force and thus prevents further .rotation of the first and second members 12, 14.
Wlien. the first and second members .! 2, 14 are positioned together, the splines 22b formed cm base 36 engage and interlock with the splines 22a formed on base 16, This engagement further prevents rotation of the first and second members 12, 1.4. In additi on, fiat edge surfaces 54a and 54b contact each other to form a substantially smooth seam extending around the circumference of the first and second bases 18, 36. End cap 50 may be connected to assembly 10 using screw 52. End cap 50 is sized to extend across the receiving section 75, End cap 50 may further include a gasket to sealmgly engage the sidewalJ of the base 36 and seal the receiving section 75.
Figure 10 illustrates another embodiment with a shaft 26 that terminates at a head 28. Both the shaft 26 and head 28 have a substantially constant width that form a 'T!. Fastener 44 includes a contact surface 47 that engages the shaft 26 to lock the device 10. Contact surface 47 substantially matches the shaft 26 to increase the contact area. Fastener 44 may further be positioned for an. edge to contact the head 28 to farther lock the device 10, in one embodiment, the locking force is provided between trie contact surface 47 and the shaft. 26, In another embodiment, the locking force is provided between the edge of the fastener 44 and head 28.
The various figures have illustrated bases 18 and 36 as having a circular shape. However, bases ΪS and/or 36 may have other shapes and sizes, .Further, lhe shapes and sizes of the bases 18, 36 may be the same or may be different Likewise, the various openings may have different shapes and sizes to receive one or .more various sizes and/or types of fasteners.
Rods 16 and 34 may have variety of lengths and diameters. The lengths and/or diameters of one or both of the rods 16, 34 may be the same or different Moreover, one or both of the rods 16, 34 may be integrally formed with the sidewalls of their respective bases 16, 36, or formed separately aad attached to the sidewalls of their respective bases 18, 36. Further, splines 22a, 22b may extend continuously around their respective bases 16» 34 or alternatively, may be formed in sections that are spaced apart along the surfaces of the first and second bases 18, 36.
Jxi. oae embodiment, axes of rotation Rl and R2 are substantially perpendicular. Examples include the embodiment illustrated in Figures 4, 9, and 10, In ofher embodiments, however, the axes are aligned at a variety of angular orientations. Further, axis R2 may be aligned to be substantially parallel with one or both rods 16, 34. In other embodiments, axis R2 may be positioned in a non-parallel manner. The present invention may be carried out in other ways than those specifically set forth herein without departing from essential characteristics of the invention. A seal may be placed on one or both bases 1.8. 36 to sealingly engage the bases together in the locked configuration.. The present, embodiments are to be considered in all respects as illustrative and not restrictive, and all changes coming within the meaning ami equivalency range of the appended claims are intended to be embraced therein.

Claims

Claim is
What Is claimed Is: 1 . A vertebral rod assembly comprising: a .first member having a first base and a first vertebral rod extending outward from the first base; an extension extending outward from the first base, the extension having a first end connected to the first, base and a second end spaced away from the first, base; a second member having a second base and a second vertebra! rod extending outward from the second base, the second member having a receiving section formed in the second base and sized to receive the second end of the extension.; and a fastener extending through the second base and into the receiving section, the fastener having a contact surface that contacts the extension at a. point spaced away from the first end to lock the second base to the .first base and prevent the first member from rotating relative to the second member.
2. The assembly of claim 1 wherein the extension comprises a flared section having a width that is larger than the first end, the contact, surface contacting the flared section.
3. The assembly of claim 2 wherein the contact surface of the fastener is angled to substantially match the flared section of the extension to increase a contact area between the fastener and the extension,
4. The assembly of claim 1 wherein the fastener extends through an opening in the second base and into the receiving section aiong an axis that is substantially perpendicular to a second axis formed by the extension.
5. The assembly of clai.ni 1 further comprising first and second openings formed in the second base each sized to receive the fastener, the first and second openings being spaced apart.
6. The assembly of claim 5 wherein the fastener Is positioned within the first opening and a second fastener is positioned within the second opening, each of the first and second fasteners sized to contact the extension,
7. The assembly of claim 1 wherein the first rod and the extension are substantially perpendicular.
8. The assembly of claim 1 wherein, the first base and the second base sesimgiy engage to seal the extension within the receiving section.
9. The assembly of claim 8 further comprising splines on the first and second bases that emgage together when the first and second bases are connected together.
10. The assembly of claim I wherein the extension and the first base are constructed from a unitary member.
11. The assembly of claim 1 wherein the fastener contacts the second end of the extension.
12. A vertebral rod assembly comprising: a first member having a first base and a first vertebral rod extending in a first direction from the first base; an extension extending outward from the first base in a second direction; a second member having a second base and a second vertebral rod extending from the second base; a recei ving section formed within the second base that, is sized to receive the extension extending from the first base; a ring disposed within the receiving section and sized to extend around the extension; and a fastener extending through the second base and the ring to lock the second base to the first base to prevent rotation of the first and second members.
13. The assembly of ciaϊm Ϊ2 further comprising an end cap mounted to the extension &x\d sized to extend over the receiving section.
Ϊ4. The assembly of claim 12 wherein the exteαsion comprises a tab having a first contact surface that extends outward from a side of the extension, and wherein the ring comprises a second contact surface that engages the first contact to lock the first and second bases.
15. The assembly of claim 14 wherein the first and second contact surfaces have substantially the same angle to slidingly engage each other when the first member rotates relative to the second member.
.
16. The assembly of claim 1.4 wherein the fastener engages a threaded opening in the ring to cause the second contact surface to apply a force to the first contact surface to lock the second base to the first hase;
17. The assembly of claim 14 further comprising a stop surface positioned along an inner surface of the ring that contacts the tab tocontrol an extent αf rotation between the first and second members.
18. The assembly of claim 12 further comprising a first, opening formed in the second base and a second opening formed in the ring, wherein the first and second openings align to receive the fastener.
19. A vertebral rod assembly comprising: a first member having a first base and a. first vertebral rod extending outward therefrom; a second member having a second base and a second vertebra! rod extending outward therefrom; an extension extending outward .from the first, base and into the second base; and a fastener to lock the second base to the first base to prevent rotation of the first member relative to the second member, the fastener being spaced away from the first and second vertebral rods and extending from the second base and into contact with the extension.
20. The assembly of claim Ϊ9 wherein the first vertebral rod is integrally formed with the first base, and the second vertebral rod is formed integrally with the second base.
21. The assembly of claim 19 further comprising a plurality of interlocking features formed on each of the first and second bases that engage together when the fastener locks the second base to the first base.
22. The assembly of claim 19 further comprising an interior section formed by a wall of the second base, and wherein the extension extends into the interior section,
23. The assembly of claim 22 wherein the fastener extends through the wail of the second base and into the interior section along a second axis that is substantially perpendicular to the first and second vertebral rods.
24. The assembly of claim 19 further comprising a ring disposed around the extension with the fastener extending into the ring.
25. A vertebral rod assembly comprising: a first member having a first base and a first vertebral rod; an extension extending outward from the first base; a second, member having a second base and a second vertebral rod, the second base having a receiving section sized to receive the extension; a ring disposed within the receiving section and sized to extend around the extension; and a fastener extending into the second base and the ring at a point spaced from the first and second vertebral rods, the fastener applying a force to the ring io lock the second base to the first base.
26. The assembly of claim 25 wherein the ring comprises a contact surface along an inner peripheral edge that contacts the extension to lock the ring to the first member.
27. The device of claim 26 wherein the contact surface and the extension each have complementary angled surfaces that contact together to increase a contact area.
28. The assembly of claim 25 further comprising an end cap mounted to the extension and sized to extend over the receiving section.
29. A method of using a vertebral support assembly, the method comprising: iiiserting an extension extending outwardly from a first surface of a first base into a receiving section of a second base, each of the first and second bases having a vertebral rod extending therefrom; rotating the first base relative to the second base about a first axis to position the vertebral rods; and locking the second base to the first base by extending a fastener through the second base and into the receiving section, the fastener being spaced away from the fi rst and second vertebral rods and along a second axis that is substantially perpendicular to the first axis.
30. The method of claim 29 further comprising inserting the fastener through the second base and contacting a first contact surface on the extension with a second contact surface on the fastener.
31 . The method of claim 29 further comprising inserting the fastener through the second base and a ring that surrounds the extension member and applying a force from the dag to the extension.
32. The method of claim 31 further comprising threadirsgly engaging the fastener in a. sidewalϊ of the second base, and tiueadingly engaging the fastener in a sidewall of the ring to cause a first contact surface on the ring to apply a locking force to the second contact surface on. the extension,
33. The method of claim 29 further comprising coupling the first and second vertebral rods to first and second vertebral bodies.
34. The method of cfalm 29 further comprising determining a locked position of the first and second vertebral rods to generally match a curvature of a portion of a spine.
PCT/US2006/061998 2005-12-20 2006-12-13 Vertebral rod assemblies and methods WO2007076265A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU2006330689A AU2006330689B2 (en) 2005-12-20 2006-12-13 Vertebral rod assemblies and methods
EP06840231.2A EP1973483B1 (en) 2005-12-20 2006-12-13 Vertebral rod assemblies
JP2008547686A JP2009520577A (en) 2005-12-20 2006-12-13 Spinal rod assembly and method
KR1020087017713A KR101341032B1 (en) 2005-12-20 2006-12-13 Vertebral rod assemblies and methods

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/313,000 US7517359B2 (en) 2005-12-20 2005-12-20 Vertebral rod assemblies and methods
US11/313,000 2005-12-20

Publications (1)

Publication Number Publication Date
WO2007076265A1 true WO2007076265A1 (en) 2007-07-05

Family

ID=37814357

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/061998 WO2007076265A1 (en) 2005-12-20 2006-12-13 Vertebral rod assemblies and methods

Country Status (6)

Country Link
US (2) US7517359B2 (en)
EP (1) EP1973483B1 (en)
JP (1) JP2009520577A (en)
KR (1) KR101341032B1 (en)
AU (1) AU2006330689B2 (en)
WO (1) WO2007076265A1 (en)

Families Citing this family (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7753958B2 (en) 2003-08-05 2010-07-13 Gordon Charles R Expandable intervertebral implant
US7909869B2 (en) 2003-08-05 2011-03-22 Flexuspine, Inc. Artificial spinal unit assemblies
US7785351B2 (en) 2003-08-05 2010-08-31 Flexuspine, Inc. Artificial functional spinal implant unit system and method for use
US7909852B2 (en) 2004-03-31 2011-03-22 Depuy Spine Sarl Adjustable-angle spinal fixation element
US8025680B2 (en) 2004-10-20 2011-09-27 Exactech, Inc. Systems and methods for posterior dynamic stabilization of the spine
US7935134B2 (en) 2004-10-20 2011-05-03 Exactech, Inc. Systems and methods for stabilization of bone structures
US8162985B2 (en) 2004-10-20 2012-04-24 The Board Of Trustees Of The Leland Stanford Junior University Systems and methods for posterior dynamic stabilization of the spine
US8118869B2 (en) 2006-03-08 2012-02-21 Flexuspine, Inc. Dynamic interbody device
US8597358B2 (en) 2007-01-19 2013-12-03 Flexuspine, Inc. Dynamic interbody devices
US20080281362A1 (en) * 2007-05-09 2008-11-13 Jeremy Lemoine Device and system for cranial support
US8157844B2 (en) 2007-10-22 2012-04-17 Flexuspine, Inc. Dampener system for a posterior stabilization system with a variable length elongated member
US8523912B2 (en) 2007-10-22 2013-09-03 Flexuspine, Inc. Posterior stabilization systems with shared, dual dampener systems
US8182514B2 (en) 2007-10-22 2012-05-22 Flexuspine, Inc. Dampener system for a posterior stabilization system with a fixed length elongated member
US8267965B2 (en) 2007-10-22 2012-09-18 Flexuspine, Inc. Spinal stabilization systems with dynamic interbody devices
US8187330B2 (en) 2007-10-22 2012-05-29 Flexuspine, Inc. Dampener system for a posterior stabilization system with a variable length elongated member
US8162994B2 (en) 2007-10-22 2012-04-24 Flexuspine, Inc. Posterior stabilization system with isolated, dual dampener systems
US9474554B2 (en) * 2007-10-23 2016-10-25 Lee A. Strnad Spinal rod cross connector
US8758439B2 (en) 2007-11-19 2014-06-24 Linares Medical Devices, Llc Spine support implant including inter vertebral insertable fluid ballastable insert and inter-vertebral web retaining harnesses
US20090131984A1 (en) * 2007-11-19 2009-05-21 Linares Miguel A Spine support implant including inter vertebral insertable fluid ballastable insert and inter-vertebral web retaining harnesses
EP2249727A4 (en) * 2008-02-06 2013-01-23 Exactech Inc Dynamic rod
US20110098748A1 (en) * 2009-10-26 2011-04-28 Warsaw Orthopedic, Inc. Adjustable vertebral rod system and methods of use
US8317837B2 (en) * 2010-02-05 2012-11-27 Warsaw Orthopedic, Inc. Connector and method
EP2555696B1 (en) * 2010-04-08 2017-07-26 Globus Medical, Inc. Jointed rod
US9387013B1 (en) * 2011-03-01 2016-07-12 Nuvasive, Inc. Posterior cervical fixation system
US8388687B2 (en) 2011-03-25 2013-03-05 Flexuspine, Inc. Interbody device insertion systems and methods
US9526627B2 (en) 2011-11-17 2016-12-27 Exactech, Inc. Expandable interbody device system and method
US9492288B2 (en) 2013-02-20 2016-11-15 Flexuspine, Inc. Expandable fusion device for positioning between adjacent vertebral bodies
DE202013105202U1 (en) * 2013-11-18 2013-11-26 Fehling Instruments Gmbh & Co. Kg Spreader, especially for cranial surgery
US10398565B2 (en) 2014-04-24 2019-09-03 Choice Spine, Llc Limited profile intervertebral implant with incorporated fastening and locking mechanism
US9517144B2 (en) 2014-04-24 2016-12-13 Exactech, Inc. Limited profile intervertebral implant with incorporated fastening mechanism
US11446063B2 (en) 2016-02-12 2022-09-20 Nuvasive, Inc. Post-operatively adjustable angled rod
WO2017139782A1 (en) 2016-02-12 2017-08-17 Nuvasive, Inc. Post-operatively adjustable angled rod
US10004538B2 (en) * 2016-04-27 2018-06-26 Warsaw Orthopedic, Inc. Surgical instrument and method
US20170325849A1 (en) * 2016-05-13 2017-11-16 Spineology Inc. Multiple diameter spinal rod clamping mechanism
US10321939B2 (en) 2016-05-18 2019-06-18 Medos International Sarl Implant connectors and related methods
US10517647B2 (en) 2016-05-18 2019-12-31 Medos International Sarl Implant connectors and related methods
US10398476B2 (en) 2016-12-13 2019-09-03 Medos International Sàrl Implant adapters and related methods
US10492835B2 (en) 2016-12-19 2019-12-03 Medos International Sàrl Offset rods, offset rod connectors, and related methods
US10238432B2 (en) 2017-02-10 2019-03-26 Medos International Sàrl Tandem rod connectors and related methods
US10966761B2 (en) 2017-03-28 2021-04-06 Medos International Sarl Articulating implant connectors and related methods
US10561454B2 (en) 2017-03-28 2020-02-18 Medos International Sarl Articulating implant connectors and related methods
US11076890B2 (en) 2017-12-01 2021-08-03 Medos International Sàrl Rod-to-rod connectors having robust rod closure mechanisms and related methods
US10966762B2 (en) 2017-12-15 2021-04-06 Medos International Sarl Unilateral implant holders and related methods
US11291481B2 (en) 2019-03-21 2022-04-05 Medos International Sarl Rod reducers and related methods
US11291482B2 (en) 2019-03-21 2022-04-05 Medos International Sarl Rod reducers and related methods
USD1004774S1 (en) 2019-03-21 2023-11-14 Medos International Sarl Kerrison rod reducer
US11065038B2 (en) 2019-08-08 2021-07-20 Medos International Sarl Fracture reduction using implant based solution
US11364055B2 (en) 2020-09-02 2022-06-21 Zavation, Llc Occipital plate and hinged rod assembly

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0953316A1 (en) 1998-04-22 1999-11-03 Daniel Fiz Bone fixation device and transverse linking bridge
FR2781359A1 (en) * 1998-07-21 2000-01-28 Pierre Boccara Osteosynthesis frame for spinal surgery has rod with clamps to hold cross bars with anchor screws
US20020138077A1 (en) * 2001-03-26 2002-09-26 Ferree Bret A. Spinal alignment apparatus and methods
US20040015166A1 (en) * 2002-07-22 2004-01-22 Gorek Josef E. System and method for stabilizing the spine by securing spine stabilization rods in crossed disposition
US20050228376A1 (en) * 2004-03-31 2005-10-13 Boomer Mark C Adjustable-angle spinal fixation element

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2702362B3 (en) * 1993-02-24 1995-04-14 Soprane Sa Fixator for osteosynthesis of the lumbosacral spine.
US5643263A (en) 1995-08-14 1997-07-01 Simonson; Peter Melott Spinal implant connection assembly
US5645544A (en) 1995-09-13 1997-07-08 Danek Medical, Inc. Variable angle extension rod
US6171311B1 (en) * 1996-10-18 2001-01-09 Marc Richelsoph Transverse connector
US5947967A (en) 1997-10-22 1999-09-07 Sdgt Holdings, Inc. Variable angle connector
FR2771280B1 (en) * 1997-11-26 2001-01-26 Albert P Alby RESILIENT VERTEBRAL CONNECTION DEVICE
US6183473B1 (en) 1999-04-21 2001-02-06 Richard B Ashman Variable angle connection assembly for a spinal implant system
US6471703B1 (en) 1999-04-21 2002-10-29 Sdgi Holdings, Inc. Variable angle connection assembly for a spinal implant system
US6872209B2 (en) 2000-03-15 2005-03-29 Sdgi Holdings, Inc. Spinal implant connection assembly
US6562038B1 (en) 2000-03-15 2003-05-13 Sdgi Holdings, Inc. Spinal implant connection assembly
US6620164B2 (en) 2000-09-22 2003-09-16 Showa Ika Kohgyo Co., Ltd. Rod for cervical vertebra and connecting system thereof
US6520962B1 (en) * 2000-10-23 2003-02-18 Sdgi Holdings, Inc. Taper-locked adjustable connector
US6685705B1 (en) 2000-10-23 2004-02-03 Sdgi Holdings, Inc. Six-axis and seven-axis adjustable connector
US6579292B2 (en) 2001-06-18 2003-06-17 Sdgi Holdings, Inc. Connection assembly for spinal implant systems
US6648887B2 (en) * 2002-01-23 2003-11-18 Richard B. Ashman Variable angle spinal implant connection assembly
US7722650B2 (en) 2003-11-14 2010-05-25 Ashman Richard B Variable angle spinal implant connection assembly
US7862586B2 (en) * 2003-11-25 2011-01-04 Life Spine, Inc. Spinal stabilization systems
US8236028B2 (en) * 2004-03-31 2012-08-07 Depuy Spine Sarl Spinal rod connector
US7744634B2 (en) * 2004-06-15 2010-06-29 Warsaw Orthopedic, Inc. Spinal rod system
US20060058787A1 (en) 2004-08-24 2006-03-16 Stryker Spine Spinal implant assembly
US8177815B2 (en) * 2007-06-05 2012-05-15 Spartek Medical, Inc. Super-elastic deflection rod for a dynamic stabilization and motion preservation spinal implantation system and method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0953316A1 (en) 1998-04-22 1999-11-03 Daniel Fiz Bone fixation device and transverse linking bridge
FR2781359A1 (en) * 1998-07-21 2000-01-28 Pierre Boccara Osteosynthesis frame for spinal surgery has rod with clamps to hold cross bars with anchor screws
US20020138077A1 (en) * 2001-03-26 2002-09-26 Ferree Bret A. Spinal alignment apparatus and methods
US20040015166A1 (en) * 2002-07-22 2004-01-22 Gorek Josef E. System and method for stabilizing the spine by securing spine stabilization rods in crossed disposition
US20050228376A1 (en) * 2004-03-31 2005-10-13 Boomer Mark C Adjustable-angle spinal fixation element

Also Published As

Publication number Publication date
JP2009520577A (en) 2009-05-28
US20070161988A1 (en) 2007-07-12
EP1973483A1 (en) 2008-10-01
KR101341032B1 (en) 2013-12-12
EP1973483B1 (en) 2019-04-03
AU2006330689A2 (en) 2008-09-25
US7901434B2 (en) 2011-03-08
US20090138049A1 (en) 2009-05-28
KR20080087838A (en) 2008-10-01
AU2006330689B2 (en) 2012-02-09
US7517359B2 (en) 2009-04-14
AU2006330689A1 (en) 2007-07-05

Similar Documents

Publication Publication Date Title
EP1973483A1 (en) Vertebral rod assemblies and methods
AU704390B2 (en) An apparatus for retaining bone portions in a desired spatial relationship
US20070173829A1 (en) Devices and methods for connecting vertebral rods
US8377140B2 (en) Expandable spinal implant device
US8147519B2 (en) Variable angle rod connectors and the methods of use
US5611800A (en) Spinal fixation system
JP3302611B2 (en) Device for holding vertebrae in desired spatial relationship
US9532807B2 (en) Anchoring member with safety ring
US20070213728A1 (en) Methods and devices for retaining bone plate anchors
EP2497435B1 (en) Polyaxial pedicle screw with increased angulation
US5810817A (en) Spinal therapy apparatus
CA2294902C (en) Multi-axial bone screw
EP1723919A2 (en) Device for securing spinal rods
US20040210312A1 (en) Implant for insertion between vertebrae of the spinal column
US20150081026A1 (en) Spinal Spacer
US20110184468A1 (en) Spinous process fusion plate with osteointegration insert
US20070270807A1 (en) Multi-piece circumferential retaining ring
WO2005122927A1 (en) Orthopedic fixation connector
KR20000065181A (en) Single locking cap for use with pedicle screws
WO2010021819A2 (en) Bottom loading connector for attaching a spinal rod to a vertebral member
EP3437576B1 (en) Stabilization device for bones or vertebrae
JP2011500276A (en) Apparatus and method for connecting spinal fixation systems to each other
US11154339B2 (en) Bone stabilization implant with anchor screw locking element
EP3352694B1 (en) Bone fixation devices having a locking feature
US11129650B1 (en) Spinal plate

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 2006330689

Country of ref document: AU

WWE Wipo information: entry into national phase

Ref document number: 2008547686

Country of ref document: JP

ENP Entry into the national phase

Ref document number: 2006330689

Country of ref document: AU

Date of ref document: 20061213

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 2509/KOLNP/2008

Country of ref document: IN

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 1020087017713

Country of ref document: KR

Ref document number: 2006840231

Country of ref document: EP