EP2877110A1 - Systèmes, procédés et appareils pour une fixation de colonne vertébrale - Google Patents

Systèmes, procédés et appareils pour une fixation de colonne vertébrale

Info

Publication number
EP2877110A1
EP2877110A1 EP13829800.5A EP13829800A EP2877110A1 EP 2877110 A1 EP2877110 A1 EP 2877110A1 EP 13829800 A EP13829800 A EP 13829800A EP 2877110 A1 EP2877110 A1 EP 2877110A1
Authority
EP
European Patent Office
Prior art keywords
shaft portion
elongated shaft
minimally invasive
self
pedicle screw
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP13829800.5A
Other languages
German (de)
English (en)
Inventor
Chris Karas, M.D.
Ryan Leard
Sebastian Lodahl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP2877110A1 publication Critical patent/EP2877110A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical 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
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical 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
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7035—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical 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
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7049—Connectors, not bearing on the vertebrae, for linking longitudinal elements together
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical 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
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7062—Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs ; Tools for such devices
    • A61B17/7067—Devices bearing against one or more spinous processes and also attached to another part of the spine; Tools therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical 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
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7062—Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs ; Tools for such devices
    • A61B17/7068—Devices comprising separate rigid parts, assembled in situ, to bear on each side of spinous processes; Tools therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical 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
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/844—Fasteners therefor or fasteners being internal fixation devices with expandable anchors or anchors having movable parts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical 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
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B17/864—Pins or screws or threaded wires; nuts therefor hollow, e.g. with socket or cannulated

Definitions

  • spinal fixation is generally the anchoring of two or more vertebrae to each other employing instrumentation. This procedure may be performed open or employing a minimally invasive technique. Fixation is usually performed at a single vertebral level, although fusion at two levels may be performed. Fixation also often involves the use of supplemental hardware such as plates, screws, and cages.
  • crosslink members between vertical fixation rods increases the stability of spinal fixation constructs in the cervical, thoracic, and lumbar spine.
  • implantation of such crosslinks traditionally requires removal of potentially healthy tissue between pedicle screws and/or vertical fixation rods. What is needed is a minimally invasive crosslink member and a method of installing the same that does not require the removal of intervening healthy tissue from the surgical site.
  • Spinous process fixation is a desirable technique for spinal fusion in a number of instances, including those where a pedicle does not exist to accept a pedicle screw, those where operative time and radiation exposure need to be minimized, and those where fixation needs to be achieved adjacent to a previous pedicle screw and rod construct.
  • adjacent level fixation has previously required removal of preexisting pedicle constructs in order to install new pedicle screws and rods, resulting in unnecessarily complex surgeries and additional tissue trauma.
  • previous spinous process fixation was not capable of tying into preexisting pedicle constructs. What is needed is an apparatus configured to work with preexisting pedicle constructs and tie spinous process constructs thereto and to each other.
  • the pedicle portion of a vertebra is commonly used as an anchor point for pedicle screws when utilizing pedicle constructs for spinal fixation.
  • a pedicle may not be capable of acting as an anchor point, which previously required more complicated fixation constructs.
  • a pedicle that has previously been weakened by a pedicle screw may not have the strength to act as an anchor during installation of a later construct.
  • various diseases such as tumors or osteoporosis may causes weakening or deterioration of the pedicle. What is needed is a prosthetic pedicle capable of installation in the place of a previously-existing pedicle and having the requisite strength to act as an anchor point in a pedicle construct.
  • a minimally invasive crosslink apparatus comprising: an elongated shaft portion; a self-drilling tip portion; and a posterolateral delivery device; wherein the elongated shaft portion is configured to connect to at least one of a vertical fixation rod and a pedicle screw head.
  • a system for spinal fusion comprising: a minimally invasive crosslink apparatus comprising an elongated shaft portion and a self-drilling tip portion; at least one of a vertical fixation rod and a pedicle screw set screw; and wherein the elongated shaft portion is connected to at least one of the vertical fixation rod and the pedicle screw set screw.
  • a method for installing a minimally invasive crosslink apparatus for spinal fusion comprising: providing a pedicle screw construct comprising at least one pedicle screw set screw and at least one vertical fixation rod; providing a minimally invasive crosslink apparatus comprising an elongated shaft portion and a self-drilling tip portion; connecting at least one acceptor component to one or more of the at least one pedicle screw set screw and the at least one vertical fixation rod; connecting the minimally invasive crosslink apparatus to a driver device; activating the driver device to cause at least one of a torque and a lateral force upon the self-drilling tip portion; advancing the minimally invasive crosslink apparatus along its longitudinal axis: (1) medially from a first side of the spinal column in plane substantially parallel to a frontal plane, (2) across the midsagittal plane, and (3) laterally to a second side of the spinal column in a plane substantially parallel to the frontal plane; and connecting the elongated shaft portion to
  • a spinous process clamp apparatus comprising: a pair of plates, wherein a medial surface of each plate of the pair of plates is configured to contact at least one spinous process; a plate locking mechanism configured to apply a compressive force upon each of the pair of plates; and a rod acceptor.
  • a system for stabilization of a spinous process comprising: a spinous process clamp apparatus comprising: a pair of plates, a plate locking mechanism configured to apply a compressive force upon each of the pair of plates, and a rod acceptor; and at least one of a vertical rod, a horizontal rod, and a multiaxial rod; wherein the rod acceptor is connected to at least one of the vertical rod, the horizontal rod, and the multiaxial rod.
  • a system for stabilization of a spinous process comprising: a spinous process clamp apparatus comprising: a pair of plates configured to contact at least one spinous process, a plate locking mechanism configured to apply a compressive force upon each of the pair of plates, and a rod acceptor; and a pedicle screw construct comprising at least one of a vertical fixation rod, a horizontal fixation rod, and a pedicle screw; wherein the rod acceptor is selectively connected to at least one of the vertical fixation rod, the horizontal fixation rod, and the pedicle screw.
  • a pedicle prosthesis apparatus comprising: a pedicle portion configured to extend from a vertebral body; a shaft portion configured to extend into the vertebral body; and wherein the pedicle portion is substantially smooth about its exterior.
  • a system for replacement of a pedicle of a vertebral body comprising: a pedicle prosthesis apparatus comprising a pedicle portion, a shaft portion, and a substantially smooth exterior; and at least one pedicle screw.
  • Figure 1 illustrates an example arrangement of a minimally invasive crosslink apparatus.
  • Figure 2 illustrates an example arrangement of a system for spinal fusion.
  • Figure 3 illustrates an example arrangement of a spinous process clamp apparatus.
  • Figure 4 illustrates an example arrangement of a system for stabilization of a spinous process.
  • Figure 5 illustrates an example arrangement of a pedicle prosthesis apparatus.
  • Figure 6 illustrates an example arrangement of a system for replacement of a pedicle of a vertebral body.
  • FIG. 1 illustrates an example arrangement of a minimally invasive crosslink apparatus 100.
  • Apparatus 100 may include an elongated shaft portion 110, a self-drilling tip portion 120, and a posterolateral delivery device 130.
  • Elongated shaft portion 110 may be configured to connect to at least one of a vertical fixation rod 140 and a spinal fixative device 150.
  • Apparatus 100 may comprise a horizontal crosslink apparatus. Such horizontal crosslink apparatus may be configured to connect at least two vertical fixation rods 140 to one another to improve the stability and/or torsional rigidity of a spinal fixation construct.
  • elongated shaft portion 110 connects to vertical fixation rod 140 via at least one acceptor component 160.
  • apparatus 100 extends between and connects to two vertical fixation rods 140 via acceptor components 160.
  • elongated shaft portion 110 is configured to extend from a first acceptor component 160 attached to a first vertical fixation rod 140, through an anatomic structure, and to a second acceptor component 160 attached to a second vertical fixation rod 140.
  • elongated shaft portion 110 is configured to extend from a first spinal fixative device 150, through an anatomic structure, and to a second spinal fixative device 150.
  • elongated shaft portion 110 is configured to connect to any combination of at least one of a vertical fixation rod 140, acceptor components 160, pedicle screws, pedicle screw heads, or other fixation devices.
  • elongated shaft portion 110 is secured to any of the acceptor component 160, vertical fixation rod 140 and spinal fixative device 150 by a fastener, for example, a screw or a nut.
  • elongated shaft portion 110 is secured by any of a series of fasteners or attachment mechanisms, including for example, a clamp, a cable, a strap, a barbed connector, or an adhesive.
  • Elongated shaft 110 may comprise any material, including a metal, a polymer, or a composite.
  • Spinal fixative device 150 may include a pedicle screw and/or pedicle screw head.
  • the pedicle screw head comprises at least one pedicle screw set screw configured to engage at least one of vertical fixation rod 140 and elongated shaft portion 110.
  • at least one acceptor component 160 comprises a fastener configured to attach elongated shaft portion 110, directly or operatively, to at least one of vertical fixation rod 140 and pedicle screw head.
  • self-drilling tip portion 120 comprises a fluted end.
  • self-drilling tip portion 120 comprises a cutting end, such that rotation of self-drilling tip portion 120 causes self-drilling tip portion 120 to bore a hole in a material.
  • self-drilling tip portion 120 is configured to create a passage for elongated shaft portion 110 through at least one of a hard tissue and a soft tissue.
  • self-drilling tip portion 120 is configured to create a passage for elongated shaft portion 110 through at least one of bone, muscle, fascia, and fat.
  • Self-drilling tip portion 120 may be capable of selectively drilling a passage either partially though a material or entirely through a material.
  • self-drilling tip portion 120 may comprise a sharpened and/or pointed end configured to be driven or pressed through a material substantially without rotational force and utilizing a substantially lateral force.
  • posterolateral delivery device 130 comprises a driver engagement portion 170 configured to connect posterolateral delivery device 130 to a driver device (not shown).
  • Driver engagement portion 170 may comprise for example a screw head or a bolt head upon which a driver device may be engaged.
  • the driver device is configured to cause a torque upon self-drilling tip portion 120 about a longitudinal axis of elongated shaft portion 120.
  • the driver device is configured to cause a lateral force upon self-drilling tip portion 120 along a longitudinal axis of elongated shaft portion 120.
  • the torque and/or lateral force applied upon self-drilling tip portion 120 may cause self-drilling tip portion 120 to create a passage for elongated shaft portion 110 through at least one of a hard tissue or a soft tissue, including for example bone, muscle, fascia, and fat.
  • posterolateral delivery device 130 is selectively removable from elongated shaft portion 110.
  • posterolateral delivery device 130 may be separated from elongated shaft portion 110 at posterolateral delivery device connection joint 180.
  • Joint 180 may include for example a threaded joint, a scored joint configured to break under a stress, or a point at which posterolateral delivery device 130 may be cut and removed from elongated shaft portion 110.
  • joint 180 includes a male and female portion.
  • joint 180 includes a clamp configured to join posterolateral delivery device 130 to elongated shaft portion 110.
  • posterolateral delivery device 130 may be configured to selectively reattach to elongated shaft portion 110.
  • Figure 2 illustrates an example arrangement of a system for spinal fusion.
  • the system includes a minimally invasive crosslink apparatus 200 having an elongated shaft portion 210 and a self-drilling tip portion 220.
  • the system may include a vertical fixation rod 240.
  • the system may also include a pedicle screw set screw 250.
  • Elongated shaft portion 210 may be connected to at least one of vertical fixation rod 240 and pedicle screw set screw 250.
  • the system may also include at least one acceptor component 260.
  • Minimally invasive crosslink apparatus 100 and 200 may be a horizontal crosslink configured to increase the stability of constructs in the cervical, thoracic, and lumbar spine.
  • Prior systems required a non-minimally invasive implantation of a crosslink, requiring removal of hard and soft tissue situated between a set of pedicle screw heads or vertical fixation rods within a pedicle screw construct. Removal of this tissue was necessary to gain access to the construct for installation of the crosslink. After this tissue was removed, a crosslink could be installed from the posterior or anterior side of the spine.
  • minimally invasive systems have been developed to allow for minimally invasive placement of thoracic and lumbar pedicle screw and rod constructs.
  • tissue situated between a set of pedicle screw heads or vertical fixation rods is not removed, as the minimally invasive approach seeks to cause the least amount of disturbance possible to healthy tissues.
  • a crosslink cannot be installed from the posterior or anterior side of the spine.
  • minimally invasive crosslink apparatus 100 and 200 may be installed medially from a side of the spinal column and substantially parallel to its frontal plane, across the midsagittal plane, and laterally to an opposite side of the spinal column.
  • the potentially healthy tissue situated between a set of pedicle screw heads or vertical fixation rods need not be removed.
  • method for installing minimally invasive crosslink apparatus 200 for spinal fusion comprising: providing a pedicle screw construct comprising at least one pedicle screw set screw 250 and at least one vertical fixation rod 240.
  • the method additionally includes providing minimally invasive crosslink apparatus 200 comprising elongated shaft portion 210 and self-drilling tip portion 220.
  • the method further comprises connecting at least one acceptor component 260 to one or more of at least one pedicle screw set screw 250 and at least one vertical fixation rod 240.
  • the method additionally includes connecting minimally invasive crosslink apparatus 200 to a driver device (not shown) and activating the driver device to cause a torque upon self-drilling tip portion 220.
  • the method also comprises advancing minimally invasive crosslink apparatus 200 along its longitudinal axis: (1) medially from a first side of the spinal column in plane substantially parallel to a frontal plane, (2) across the midsagittal plane, and (3) laterally to a second side of the spinal column in a plane substantially parallel to the frontal plane.
  • the method may include connecting elongated shaft portion 210 to at least one acceptor component 260.
  • the method may additionally include a posterolateral delivery device (not shown) connected to minimally invasive crosslink apparatus 200 and connected to the driver device.
  • the method also includes removing the posterolateral delivery device from minimally invasive crosslink apparatus 200 following the advancing of minimally invasive crosslink apparatus 200 along its longitudinal axis.
  • the advancing minimally invasive crosslink apparatus 200 along its longitudinal axis further comprises causing self-drilling tip portion 220 to create a passage for elongated shaft portion 210 through at least one of a hard tissue and a soft tissue.
  • the advancing minimally invasive crosslink apparatus 500 along its longitudinal axis further comprises causing self-drilling tip portion 220 to pass through at least one acceptor component 260.
  • self-drilling tip portion 220 includes a sharpened and/or pointed tip and the activating the driver device is configured to cause a lateral force upon self-drilling tip portion 220, instead of or in addition to causing a torque upon self-drilling tip portion 220.
  • FIG. 3 illustrates an example arrangement of a spinous process clamp apparatus 300.
  • Apparatus 300 comprises a pair of plates 310, wherein the medial surface of each plate is configured to contact at least one spinous process.
  • Apparatus 300 may additionally comprise a plate locking mechanism 320 configured to apply compressive force upon each of the pair of plates 310.
  • At least one of pair of plates 310 may comprise bone spikes 340.
  • Apparatus 300 may additionally comprise a rod acceptor 350.
  • Plates 310 may be of any size or configuration to allow a connection to at least one spinous process (not shown).
  • plates 310 may comprise a dog bone shape having larger terminal ends with a narrower central portion.
  • plates 310 comprise a single spinous process clamp, having only a single end portion configured for attachment to a construct.
  • plates 310 comprise a dual spinous process clamp, having two end portions configured for attachment to a construct.
  • at least one of plates 310 comprises a medial surface comprising bone spikes 340.
  • Plates 310 may comprise any of a variety of materials, including for example a metal, a polymer, or a composite.
  • plate locking mechanism 320 comprises a selectively engageable locking mechanism.
  • plate locking mechanism 320 comprises a barbed mechanism that can be inserted through an aperture in the pair of plates 310 wherein the barbs engage the pair of plates 310 and apply compressive forces upon each of pair of plates 310.
  • plate locking mechanism 320 comprises any fastener device capable of applying a compressive force upon each of pair of plates 310, including a screw, a nut, a cable, a strap, a clamp, a barbed connector, and an adhesive.
  • apparatus 300 comprises rod acceptor 350, wherein rod acceptor 350 is configured to attach to at least one of a vertical rod, a horizontal rod, and a multiaxial rod.
  • the horizontal rod is a horizontal crosslink.
  • rod acceptor 350 is configured to operatively connect to at least one of a pedicle screw, a pedicle screw set screw, and a spinal fixative device.
  • Rod acceptor 350 may additionally comprise at least one rod acceptor locking screw configured to engage at least one of a vertical rod, a horizontal rod, and a multiaxial rod and at least substantially prevent relative movement between rod acceptor 350 and the vertical rod, horizontal rod, and/or multiaxial rod.
  • a multiaxial rod comprises any rod that is not substantially vertical or substantially horizontal [0040]
  • rod acceptor 350 is a vertical rod acceptor configured to connect plates 310 to at least one vertical fixation rod.
  • rod acceptor 350 is a horizontal rod acceptor configured to connect plates 310 to at least one horizontal rod.
  • rod acceptor 350 is a polyaxial rod acceptor configured to connect plates 310 to at least one of a vertical rod, a horizontal rod, and a multiaxial rod.
  • rod acceptor 350 is a horizontal rod acceptor configured to connect plates 310 to at least one of a pedicle screw, a pedicle screw set screw, and a spinal fixative device.
  • the pedicle screw may comprise a multiaxial pedicle screwhead configured to connect to at least one of a vertical rod, a horizontal rod, and a multiaxial rod.
  • rod acceptor 350 is configured to operatively connect plates 310 to any of a variety of preexisting fixation constructs.
  • Figure 4 illustrates an example arrangement of a system for stabilization of a spinous process.
  • the system comprises a spinous process clamp apparatus 400 comprising a pair of plates 410, a plate locking mechanism 420 configured to apply a compressive force upon each of the pair of plates 410. At least one of pair of plates 410 may comprise bone spikes 440.
  • the system may also include a rod acceptor 450 and 460.
  • the system further comprises a preexisting pedicle screw construct 475, comprising at least one of a pedicle screw 480, a vertical rod 485, a horizontal rod 490, and a multiaxial rod (not shown).
  • Rod acceptor 450 may be utilized to connect clamp apparatus 400 to at least one of vertical rod 485, horizontal rod 490, and the multiaxial rod (not shown).
  • Clamp apparatus 400 may be configured to contact at least one spinous process.
  • the system may further comprise a second spinous process clamp apparatus 400 configured to contact one or more spinous processes.
  • Rod acceptor 450 may be operatively connected to second spinous process clamp apparatus.
  • at least one spinous process clamp apparatus 400 is connected to at least one spinous process.
  • Rod acceptor 450 may be a horizontal rod acceptor configured to engage a horizontal rod 490.
  • Horizontal rod 490 may be connected to at least one of an acceptor component 495, a pedicle screw 480, and a pedicle screw set screw (not shown). In this manner, it is possible to attach one or more spinous process clamp apparatuses 400 to a conventional pedicle screw construct, which may be a preexisting construct.
  • FIG. 5 illustrates an example arrangement of a pedicle prosthesis apparatus 500.
  • Prosthesis apparatus 500 comprises a pedicle portion 510 configured to extend from a vertebral body and a shaft portion 520 configured to extend into the vertebral body.
  • Prosthesis apparatus 500 may comprise any of a variety of materials, including a metal, a polymer, or a composite.
  • pedicle portion 510 is smooth about its exterior to avoid potential irritation by prosthesis apparatus 500 on surrounding nerves and tissue. In one embodiment, pedicle portion 510 is at least one of substantially cylindrical and substantially ellipsoidal in shape. Pedicle portion 510 may comprise any of a variety of materials, including a metal, a polymer, and a composite.
  • prosthesis apparatus 500 comprises threads 530 configured to engage the interior of a vertebral body.
  • threads 530 are configured to engage a pre-tapped threaded hole in the vertebral body.
  • threads 530 are configured to cut into and engage a substantially smooth hole in the vertebral body.
  • threads 530 are configured to hold prosthesis apparatus 500 in place within and against the vertebral body.
  • Threads 530 may comprise any of a variety of materials, including a metal, a polymer, and a composite.
  • prosthesis apparatus 500 comprises barbs configured to engage the interior of a vertebral body.
  • the barbs are configured to engage a hole in the vertebral body comprising an element for mating with the barbs.
  • the barbs are configured to cut into and engage a substantially smooth hole in the vertebral body.
  • the barbs are configured to hold prosthesis apparatus 500 in place within and against the vertebral body.
  • the barbs may comprise any of a variety of materials, including a metal, a polymer, and a composite.
  • shaft portion 520 comprises a distal end having at least one aperture 540.
  • At least one aperture 540 may comprise a series of longitudinal slits extending at least substantially through shaft portion 520 and configured to permit the expansion of shaft portion 520 upon manipulation of at least one aperture 540.
  • at least one aperture 540 allows shaft portion 520 to expand and engage the interior of the vertebral body, which expansion may cause a force at least substantially transverse to shaft portion 520. This expanding action of shaft portion 520 may help prevent unscrewing and/or loosening of prosthesis apparatus 500.
  • prosthesis apparatus 500 further comprises a substantially hollow interior portion 550 configured to accept a pedicle screw (not shown).
  • the pedicle screw may be inserted at least partially or entirely through substantially hollow interior portion 550. In another embodiment, the pedicle screw may be inserted into substantially hollow interior portion 550. In one embodiment, upon insertion of a pedicle screw into substantially hollow interior portion 550, the pedicle screw causes manipulation of at least one aperture 540, thereby causing expansion of shaft portion 520. In another embodiment, substantially hollow interior portion 550 comprises threads. The threads may comprise female threads configured to substantially mate with male threads of a pedicle screw.
  • substantially hollow interior portion 550 does not comprise threads, but is configured to engage the threads of a pedicle screw inserted therein.
  • substantially hollow interior portion 550 comprises a surface having a hardness that is low enough to permit engagement of the pedicle screw threads therein.
  • the surface of substantially hollow interior portion 550 may comprise a silicone material capable of accepting the threads of a pedicle screw.
  • substantially hollow interior portion 550 comprises a surface that is soft enough to engage pedicle screw threads therein.
  • substantially hollow interior portion 550 comprises a surface configured to plastically deform upon insertion of pedicle screw threads therein, wherein the plastic deformation engages the surface of substantially hollow interior portion 550 with the pedicle screw threads.
  • the surface of substantially hollow interior portion 550 may comprise a bone graft material capable of accepting the threads of a pedicle screw.
  • Figure 6 illustrates an example arrangement of a system for replacement of a pedicle of a vertebral body.
  • the system comprises a pedicle prosthesis apparatus 600 comprising a pedicle portion 610, a shaft portion 620 and a substantially smooth exterior.
  • Pedicle prosthesis 600 may additionally include threads 630 and at least one aperture 640.
  • the system may additionally comprise at least one pedicle screw set screw 675 and at least one pedicle screw 680.
  • the system may further comprise at least one fixation rod 685.
  • the system further comprises at least one of a fixation rod 685, a crosslink, and a spinous process clamp.
  • the at least one pedicle screw 680 is configured to operatively connect to at least one of the fixation rod 685, the crosslink, and the spinous process clamp.
  • the at least one pedicle screw 680 is configured to operatively connected to at least one of a vertical fixation rod, a horizontal fixation rod, and a multiaxial fixation rod.
  • the at least one pedicle screw 680 is configured to interface with a spinal fixation system.
  • the at least one pedicle screw 680 is configured to operatively connect to at least one of the fixation rod 685, the crosslink, and the spinous process clamp through a pedicle screw set screw 675.

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Neurology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)
  • Prostheses (AREA)

Abstract

L'invention concerne des procédés, des systèmes et des appareils pour une fixation de colonne vertébrale. L'invention concerne un système pour une fusion de colonne vertébrale, le système comprenant : un appareil d'établissement de liaison transversale à effraction minimale comprenant une partie tige allongée et une partie pointe auto-foreuse ; au moins l'une parmi une tige de fixation verticale et une vis d'ensemble de vis de pédicule ; et la partie tige allongée étant reliée à au moins l'une parmi la tige de fixation verticale et la vis d'ensemble de vis de pédicule.
EP13829800.5A 2012-07-26 2013-07-26 Systèmes, procédés et appareils pour une fixation de colonne vertébrale Withdrawn EP2877110A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261676129P 2012-07-26 2012-07-26
PCT/US2013/052271 WO2014028197A1 (fr) 2012-07-26 2013-07-26 Systèmes, procédés et appareils pour une fixation de colonne vertébrale

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EP2877110A1 true EP2877110A1 (fr) 2015-06-03

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WO (1) WO2014028197A1 (fr)

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CN110584762B (zh) * 2018-06-12 2024-04-26 颉强 用于股骨和胫骨的截骨复位装置

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Publication number Priority date Publication date Assignee Title
US5330473A (en) * 1993-03-04 1994-07-19 Advanced Spine Fixation Systems, Inc. Branch connector for spinal fixation systems
US5752955A (en) * 1995-10-30 1998-05-19 Fastenetix, L.L.C. Sliding shaft variable length cross-link device for use with dual rod apparatus
US8419771B2 (en) * 2008-03-17 2013-04-16 Partnership Of David A. Poirier And Robert A. Rovner Implantable spinal fixation crosslink
US20110106161A1 (en) * 2009-10-30 2011-05-05 Warsaw Orthopedic, Inc. Position Retaining Crosslink
BRPI0904658A2 (pt) * 2009-11-04 2010-11-09 M D T Ind E Com De Implantes Ltda parafuso pedicular poliaxial e monoaxial

Non-Patent Citations (1)

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Title
See references of WO2014028197A1 *

Also Published As

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WO2014028197A1 (fr) 2014-02-20

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